// dear imgui, v1.92.0 WIP // (drawing and font code) /* Index of this file: // [SECTION] STB libraries implementation // [SECTION] Style functions // [SECTION] ImDrawList // [SECTION] ImTriangulator, ImDrawList concave polygon fill // [SECTION] ImDrawListSplitter // [SECTION] ImDrawData // [SECTION] Helpers ShadeVertsXXX functions // [SECTION] ImFontConfig // [SECTION] ImFontAtlas, ImFontAtlasBuilder // [SECTION] ImFontAtlas: backend for stb_truetype // [SECTION] ImFontAtlas: glyph ranges helpers // [SECTION] ImFontGlyphRangesBuilder // [SECTION] ImFont // [SECTION] ImGui Internal Render Helpers // [SECTION] Decompression code // [SECTION] Default font data (ProggyClean.ttf) */ #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) #define _CRT_SECURE_NO_WARNINGS #endif #ifndef IMGUI_DEFINE_MATH_OPERATORS #define IMGUI_DEFINE_MATH_OPERATORS #endif #include "imgui.h" #ifndef IMGUI_DISABLE #include "imgui_internal.h" #ifdef IMGUI_ENABLE_FREETYPE #include "misc/freetype/imgui_freetype.h" #endif #include // intptr_t #include // vsnprintf, sscanf, printf // Visual Studio warnings #ifdef _MSC_VER #pragma warning(disable : 4127) // condition expression is constant #pragma warning(disable : 4505) // unreferenced local function has been removed (stb stuff) #pragma warning( \ disable : 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen #pragma warning(disable : 26451) // [Static Analyzer] Arithmetic overflow : Using operator 'xxx' on a 4 byte value and // then casting the result to a 8 byte value. Cast the value to the wider type before // calling operator 'xxx' to avoid overflow(io.2). #pragma warning(disable : 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' // (Enum.3). [MSVC Static Analyzer) #endif // Clang/GCC warnings with -Weverything #if defined(__clang__) #if __has_warning("-Wunknown-warning-option") #pragma clang diagnostic ignored \ "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are // known by all Clang versions and they tend to be rename-happy.. so ignoring warnings // triggers new warnings on some configuration. Great! #endif #pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx' #pragma clang diagnostic ignored \ "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse. #pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing // and comparing against same constants ok. #pragma clang diagnostic ignored "-Wglobal-constructors" // warning: declaration requires a global destructor // // similar to above, not sure what the exact difference is. #pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some // standard header variations use #define NULL 0 #pragma clang diagnostic ignored "-Wcomma" // warning: possible misuse of comma operator here #pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier #pragma clang diagnostic ignored \ "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // // using printf() is a misery with this as C++ va_arg ellipsis changes float to double. #pragma clang diagnostic ignored \ "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision #pragma clang diagnostic ignored "-Wreserved-identifier" // warning: identifier '_Xxx' is reserved because it starts // with '_' followed by a capital letter #pragma clang diagnostic ignored "-Wunsafe-buffer-usage" // warning: 'xxx' is an unsafe pointer used for buffer access #pragma clang diagnostic ignored "-Wnontrivial-memaccess" // warning: first argument in call to 'memset' is a pointer to // non-trivially copyable type #pragma clang diagnostic ignored "-Wcast-qual" // warning: cast from 'const xxxx *' to 'xxx *' drops const qualifier #pragma clang diagnostic ignored "-Wswitch-default" // warning: 'switch' missing 'default' label #elif defined(__GNUC__) #pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind #pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used #pragma GCC diagnostic ignored "-Wfloat-equal" // warning: comparing floating-point with '==' or '!=' is unsafe #pragma GCC diagnostic ignored \ "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function #pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value #pragma GCC diagnostic ignored \ "-Wstack-protector" // warning: stack protector not protecting local variables: variable length buffer #pragma GCC diagnostic ignored "-Wstrict-overflow" // warning: assuming signed overflow does not occur when simplifying // division / ..when changing X +- C1 cmp C2 to X cmp C2 -+ C1 #pragma GCC diagnostic ignored \ "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no // trivial copy-assignment; use assignment or value-initialization instead #pragma GCC diagnostic ignored \ "-Wcast-qual" // warning: cast from type 'const xxxx *' to type 'xxxx *' casts away qualifiers #endif //------------------------------------------------------------------------- // [SECTION] STB libraries implementation (for stb_truetype and stb_rect_pack) //------------------------------------------------------------------------- // Compile time options: // #define IMGUI_STB_NAMESPACE ImStb // #define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h" // #define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h" // #define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION // #define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION #ifdef IMGUI_STB_NAMESPACE namespace IMGUI_STB_NAMESPACE { #endif #ifdef _MSC_VER #pragma warning(push) #pragma warning(disable : 4456) // declaration of 'xx' hides previous local declaration #pragma warning(disable : 6011) // (stb_rectpack) Dereferencing NULL pointer 'cur->next'. #pragma warning(disable : 6385) // (stb_truetype) Reading invalid data from 'buffer': the readable size is // '_Old_3`kernel_width' bytes, but '3' bytes may be read. #pragma warning( \ disable \ : 28182) // (stb_rectpack) Dereferencing NULL pointer. 'cur' contains the same NULL value as 'cur->next' did. #endif #if defined(__clang__) #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used #pragma clang diagnostic ignored "-Wmissing-prototypes" #pragma clang diagnostic ignored "-Wimplicit-fallthrough" #endif #if defined(__GNUC__) #pragma GCC diagnostic push #pragma GCC diagnostic ignored \ "-Wtype-limits" // warning: comparison is always true due to limited range of data type [-Wtype-limits] #pragma GCC diagnostic ignored "-Wimplicit-fallthrough" // warning: this statement may fall through #endif #ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit // (e.g. unity builds) #ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in another // compilation unit #define STBRP_STATIC #define STBRP_ASSERT(x) \ do \ { \ IM_ASSERT(x); \ } while (0) #define STBRP_SORT ImQsort #define STB_RECT_PACK_IMPLEMENTATION #endif #ifdef IMGUI_STB_RECT_PACK_FILENAME #include IMGUI_STB_RECT_PACK_FILENAME #else #include "imstb_rectpack.h" #endif #endif #ifdef IMGUI_ENABLE_STB_TRUETYPE #ifndef STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit // (e.g. unity builds) #ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in another // compilation unit #define STBTT_malloc(x, u) ((void)(u), IM_ALLOC(x)) #define STBTT_free(x, u) ((void)(u), IM_FREE(x)) #define STBTT_assert(x) \ do \ { \ IM_ASSERT(x); \ } while (0) #define STBTT_fmod(x, y) ImFmod(x, y) #define STBTT_sqrt(x) ImSqrt(x) #define STBTT_pow(x, y) ImPow(x, y) #define STBTT_fabs(x) ImFabs(x) #define STBTT_ifloor(x) ((int)ImFloor(x)) #define STBTT_iceil(x) ((int)ImCeil(x)) #define STBTT_strlen(x) ImStrlen(x) #define STBTT_STATIC #define STB_TRUETYPE_IMPLEMENTATION #else #define STBTT_DEF extern #endif #ifdef IMGUI_STB_TRUETYPE_FILENAME #include IMGUI_STB_TRUETYPE_FILENAME #else #include "imstb_truetype.h" #endif #endif #endif // IMGUI_ENABLE_STB_TRUETYPE #if defined(__GNUC__) #pragma GCC diagnostic pop #endif #if defined(__clang__) #pragma clang diagnostic pop #endif #if defined(_MSC_VER) #pragma warning(pop) #endif #ifdef IMGUI_STB_NAMESPACE } // namespace ImStb using namespace IMGUI_STB_NAMESPACE; #endif //----------------------------------------------------------------------------- // [SECTION] Style functions //----------------------------------------------------------------------------- void ImGui::StyleColorsDark(ImGuiStyle *dst) { ImGuiStyle *style = dst ? dst : &ImGui::GetStyle(); ImVec4 *colors = style->Colors; colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f); colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f); colors[ImGuiCol_WindowBg] = ImVec4(0.06f, 0.06f, 0.06f, 0.94f); colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_PopupBg] = ImVec4(0.08f, 0.08f, 0.08f, 0.94f); colors[ImGuiCol_Border] = ImVec4(0.43f, 0.43f, 0.50f, 0.50f); colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_FrameBg] = ImVec4(0.16f, 0.29f, 0.48f, 0.54f); colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f); colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f); colors[ImGuiCol_TitleBg] = ImVec4(0.04f, 0.04f, 0.04f, 1.00f); colors[ImGuiCol_TitleBgActive] = ImVec4(0.16f, 0.29f, 0.48f, 1.00f); colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.00f, 0.00f, 0.51f); colors[ImGuiCol_MenuBarBg] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f); colors[ImGuiCol_ScrollbarBg] = ImVec4(0.02f, 0.02f, 0.02f, 0.53f); colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.31f, 0.31f, 0.31f, 1.00f); colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.41f, 0.41f, 0.41f, 1.00f); colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.51f, 0.51f, 0.51f, 1.00f); colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f); colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f); colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f); colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f); colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f); colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_Separator] = colors[ImGuiCol_Border]; colors[ImGuiCol_SeparatorHovered] = ImVec4(0.10f, 0.40f, 0.75f, 0.78f); colors[ImGuiCol_SeparatorActive] = ImVec4(0.10f, 0.40f, 0.75f, 1.00f); colors[ImGuiCol_ResizeGrip] = ImVec4(0.26f, 0.59f, 0.98f, 0.20f); colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f); colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f); colors[ImGuiCol_InputTextCursor] = colors[ImGuiCol_Text]; colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered]; colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f); colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f); colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f); colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f); colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.50f, 0.50f, 0.50f, 0.00f); colors[ImGuiCol_PlotLines] = ImVec4(0.61f, 0.61f, 0.61f, 1.00f); colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f); colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f); colors[ImGuiCol_TableHeaderBg] = ImVec4(0.19f, 0.19f, 0.20f, 1.00f); colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.35f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableBorderLight] = ImVec4(0.23f, 0.23f, 0.25f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.06f); colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f); colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border]; colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f); colors[ImGuiCol_NavCursor] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f); colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f); colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.35f); } void ImGui::StyleColorsClassic(ImGuiStyle *dst) { ImGuiStyle *style = dst ? dst : &ImGui::GetStyle(); ImVec4 *colors = style->Colors; colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f); colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f); colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.85f); colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_PopupBg] = ImVec4(0.11f, 0.11f, 0.14f, 0.92f); colors[ImGuiCol_Border] = ImVec4(0.50f, 0.50f, 0.50f, 0.50f); colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_FrameBg] = ImVec4(0.43f, 0.43f, 0.43f, 0.39f); colors[ImGuiCol_FrameBgHovered] = ImVec4(0.47f, 0.47f, 0.69f, 0.40f); colors[ImGuiCol_FrameBgActive] = ImVec4(0.42f, 0.41f, 0.64f, 0.69f); colors[ImGuiCol_TitleBg] = ImVec4(0.27f, 0.27f, 0.54f, 0.83f); colors[ImGuiCol_TitleBgActive] = ImVec4(0.32f, 0.32f, 0.63f, 0.87f); colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f); colors[ImGuiCol_MenuBarBg] = ImVec4(0.40f, 0.40f, 0.55f, 0.80f); colors[ImGuiCol_ScrollbarBg] = ImVec4(0.20f, 0.25f, 0.30f, 0.60f); colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f); colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f); colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f); colors[ImGuiCol_CheckMark] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f); colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f); colors[ImGuiCol_SliderGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f); colors[ImGuiCol_Button] = ImVec4(0.35f, 0.40f, 0.61f, 0.62f); colors[ImGuiCol_ButtonHovered] = ImVec4(0.40f, 0.48f, 0.71f, 0.79f); colors[ImGuiCol_ButtonActive] = ImVec4(0.46f, 0.54f, 0.80f, 1.00f); colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f); colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f); colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.53f, 0.87f, 0.80f); colors[ImGuiCol_Separator] = ImVec4(0.50f, 0.50f, 0.50f, 0.60f); colors[ImGuiCol_SeparatorHovered] = ImVec4(0.60f, 0.60f, 0.70f, 1.00f); colors[ImGuiCol_SeparatorActive] = ImVec4(0.70f, 0.70f, 0.90f, 1.00f); colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.10f); colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.78f, 0.82f, 1.00f, 0.60f); colors[ImGuiCol_ResizeGripActive] = ImVec4(0.78f, 0.82f, 1.00f, 0.90f); colors[ImGuiCol_InputTextCursor] = colors[ImGuiCol_Text]; colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered]; colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f); colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f); colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f); colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f); colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.53f, 0.53f, 0.87f, 0.00f); colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f); colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f); colors[ImGuiCol_TableHeaderBg] = ImVec4(0.27f, 0.27f, 0.38f, 1.00f); colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.45f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableBorderLight] = ImVec4(0.26f, 0.26f, 0.28f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.07f); colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f); colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border]; colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f); colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered]; colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f); colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f); colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f); } // Those light colors are better suited with a thicker font than the default one + FrameBorder void ImGui::StyleColorsLight(ImGuiStyle *dst) { ImGuiStyle *style = dst ? dst : &ImGui::GetStyle(); ImVec4 *colors = style->Colors; colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f); colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f); colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 1.00f); colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.98f); colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.30f); colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f); colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f); colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f); colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f); colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f); colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f); colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f); colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f); colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 0.80f); colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.49f, 0.49f, 0.49f, 0.80f); colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f); colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_SliderGrab] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f); colors[ImGuiCol_SliderGrabActive] = ImVec4(0.46f, 0.54f, 0.80f, 0.60f); colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f); colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f); colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f); colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f); colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f); colors[ImGuiCol_Separator] = ImVec4(0.39f, 0.39f, 0.39f, 0.62f); colors[ImGuiCol_SeparatorHovered] = ImVec4(0.14f, 0.44f, 0.80f, 0.78f); colors[ImGuiCol_SeparatorActive] = ImVec4(0.14f, 0.44f, 0.80f, 1.00f); colors[ImGuiCol_ResizeGrip] = ImVec4(0.35f, 0.35f, 0.35f, 0.17f); colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f); colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f); colors[ImGuiCol_InputTextCursor] = colors[ImGuiCol_Text]; colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered]; colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.90f); colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f); colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f); colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f); colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.26f, 0.59f, 1.00f, 0.00f); colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f); colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f); colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.45f, 0.00f, 1.00f); colors[ImGuiCol_TableHeaderBg] = ImVec4(0.78f, 0.87f, 0.98f, 1.00f); colors[ImGuiCol_TableBorderStrong] = ImVec4(0.57f, 0.57f, 0.64f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableBorderLight] = ImVec4(0.68f, 0.68f, 0.74f, 1.00f); // Prefer using Alpha=1.0 here colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); colors[ImGuiCol_TableRowBgAlt] = ImVec4(0.30f, 0.30f, 0.30f, 0.09f); colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive]; colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f); colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border]; colors[ImGuiCol_DragDropTarget] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f); colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered]; colors[ImGuiCol_NavWindowingHighlight] = ImVec4(0.70f, 0.70f, 0.70f, 0.70f); colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.20f); colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f); } //----------------------------------------------------------------------------- // [SECTION] ImDrawList //----------------------------------------------------------------------------- ImDrawListSharedData::ImDrawListSharedData() { memset(this, 0, sizeof(*this)); InitialFringeScale = 1.0f; for (int i = 0; i < IM_ARRAYSIZE(ArcFastVtx); i++) { const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(ArcFastVtx); ArcFastVtx[i] = ImVec2(ImCos(a), ImSin(a)); } ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError); } ImDrawListSharedData::~ImDrawListSharedData() { IM_ASSERT(DrawLists.Size == 0); } void ImDrawListSharedData::SetCircleTessellationMaxError(float max_error) { if (CircleSegmentMaxError == max_error) return; IM_ASSERT(max_error > 0.0f); CircleSegmentMaxError = max_error; for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++) { const float radius = (float)i; CircleSegmentCounts[i] = (ImU8)((i > 0) ? IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError) : IM_DRAWLIST_ARCFAST_SAMPLE_MAX); } ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError); } ImDrawList::ImDrawList(ImDrawListSharedData *shared_data) { memset(this, 0, sizeof(*this)); _SetDrawListSharedData(shared_data); } ImDrawList::~ImDrawList() { _ClearFreeMemory(); _SetDrawListSharedData(NULL); } void ImDrawList::_SetDrawListSharedData(ImDrawListSharedData *data) { if (_Data != NULL) _Data->DrawLists.find_erase_unsorted(this); _Data = data; if (_Data != NULL) _Data->DrawLists.push_back(this); } // Initialize before use in a new frame. We always have a command ready in the buffer. // In the majority of cases, you would want to call PushClipRect() and PushTexture() after this. void ImDrawList::_ResetForNewFrame() { // Verify that the ImDrawCmd fields we want to memcmp() are contiguous in memory. IM_STATIC_ASSERT(offsetof(ImDrawCmd, ClipRect) == 0); IM_STATIC_ASSERT(offsetof(ImDrawCmd, TexRef) == sizeof(ImVec4)); IM_STATIC_ASSERT(offsetof(ImDrawCmd, VtxOffset) == sizeof(ImVec4) + sizeof(ImTextureRef)); if (_Splitter._Count > 1) _Splitter.Merge(this); CmdBuffer.resize(0); IdxBuffer.resize(0); VtxBuffer.resize(0); Flags = _Data->InitialFlags; memset(&_CmdHeader, 0, sizeof(_CmdHeader)); _VtxCurrentIdx = 0; _VtxWritePtr = NULL; _IdxWritePtr = NULL; _ClipRectStack.resize(0); _TextureStack.resize(0); _CallbacksDataBuf.resize(0); _Path.resize(0); _Splitter.Clear(); CmdBuffer.push_back(ImDrawCmd()); _FringeScale = _Data->InitialFringeScale; } void ImDrawList::_ClearFreeMemory() { CmdBuffer.clear(); IdxBuffer.clear(); VtxBuffer.clear(); Flags = ImDrawListFlags_None; _VtxCurrentIdx = 0; _VtxWritePtr = NULL; _IdxWritePtr = NULL; _ClipRectStack.clear(); _TextureStack.clear(); _CallbacksDataBuf.clear(); _Path.clear(); _Splitter.ClearFreeMemory(); } ImDrawList *ImDrawList::CloneOutput() const { ImDrawList *dst = IM_NEW(ImDrawList(_Data)); dst->CmdBuffer = CmdBuffer; dst->IdxBuffer = IdxBuffer; dst->VtxBuffer = VtxBuffer; dst->Flags = Flags; return dst; } void ImDrawList::AddDrawCmd() { ImDrawCmd draw_cmd; draw_cmd.ClipRect = _CmdHeader.ClipRect; // Same as calling ImDrawCmd_HeaderCopy() draw_cmd.TexRef = _CmdHeader.TexRef; draw_cmd.VtxOffset = _CmdHeader.VtxOffset; draw_cmd.IdxOffset = IdxBuffer.Size; IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w); CmdBuffer.push_back(draw_cmd); } // Pop trailing draw command (used before merging or presenting to user) // Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > // 0 && CmdBuffer.back().UserCallback == NULL void ImDrawList::_PopUnusedDrawCmd() { while (CmdBuffer.Size > 0) { ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; if (curr_cmd->ElemCount != 0 || curr_cmd->UserCallback != NULL) return; // break; CmdBuffer.pop_back(); } } void ImDrawList::AddCallback(ImDrawCallback callback, void *userdata, size_t userdata_size) { IM_ASSERT_PARANOID(CmdBuffer.Size > 0); ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; IM_ASSERT(curr_cmd->UserCallback == NULL); if (curr_cmd->ElemCount != 0) { AddDrawCmd(); curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; } curr_cmd->UserCallback = callback; if (userdata_size == 0) { // Store user data directly in command (no indirection) curr_cmd->UserCallbackData = userdata; curr_cmd->UserCallbackDataSize = 0; curr_cmd->UserCallbackDataOffset = -1; } else { // Copy and store user data in a buffer IM_ASSERT(userdata != NULL); IM_ASSERT(userdata_size < (1u << 31)); curr_cmd->UserCallbackData = NULL; // Will be resolved during Render() curr_cmd->UserCallbackDataSize = (int)userdata_size; curr_cmd->UserCallbackDataOffset = _CallbacksDataBuf.Size; _CallbacksDataBuf.resize(_CallbacksDataBuf.Size + (int)userdata_size); memcpy(_CallbacksDataBuf.Data + (size_t)curr_cmd->UserCallbackDataOffset, userdata, userdata_size); } AddDrawCmd(); // Force a new command after us (see comment below) } // Compare ClipRect, TexRef and VtxOffset with a single memcmp() #define ImDrawCmd_HeaderSize (offsetof(ImDrawCmd, VtxOffset) + sizeof(unsigned int)) #define ImDrawCmd_HeaderCompare(CMD_LHS, CMD_RHS) \ (memcmp(CMD_LHS, CMD_RHS, ImDrawCmd_HeaderSize)) // Compare ClipRect, TexRef, VtxOffset #define ImDrawCmd_HeaderCopy(CMD_DST, CMD_SRC) \ (memcpy(CMD_DST, CMD_SRC, ImDrawCmd_HeaderSize)) // Copy ClipRect, TexRef, VtxOffset #define ImDrawCmd_AreSequentialIdxOffset(CMD_0, CMD_1) (CMD_0->IdxOffset + CMD_0->ElemCount == CMD_1->IdxOffset) // Try to merge two last draw commands void ImDrawList::_TryMergeDrawCmds() { IM_ASSERT_PARANOID(CmdBuffer.Size > 0); ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; ImDrawCmd *prev_cmd = curr_cmd - 1; if (ImDrawCmd_HeaderCompare(curr_cmd, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && curr_cmd->UserCallback == NULL && prev_cmd->UserCallback == NULL) { prev_cmd->ElemCount += curr_cmd->ElemCount; CmdBuffer.pop_back(); } } // Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to // perform any check so we always have a command ready in the stack. The cost of figuring out if a new command has to be // added or if we can merge is paid in those Update** functions only. void ImDrawList::_OnChangedClipRect() { // If current command is used with different settings we need to add a new command IM_ASSERT_PARANOID(CmdBuffer.Size > 0); ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; if (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &_CmdHeader.ClipRect, sizeof(ImVec4)) != 0) { AddDrawCmd(); return; } IM_ASSERT(curr_cmd->UserCallback == NULL); // Try to merge with previous command if it matches, else use current command ImDrawCmd *prev_cmd = curr_cmd - 1; if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL) { CmdBuffer.pop_back(); return; } curr_cmd->ClipRect = _CmdHeader.ClipRect; } void ImDrawList::_OnChangedTexture() { // If current command is used with different settings we need to add a new command IM_ASSERT_PARANOID(CmdBuffer.Size > 0); ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; if (curr_cmd->ElemCount != 0 && curr_cmd->TexRef != _CmdHeader.TexRef) { AddDrawCmd(); return; } // Unlike other _OnChangedXXX functions this may be called by ImFontAtlasUpdateDrawListsTextures() in more locations // so we need to handle this case. if (curr_cmd->UserCallback != NULL) return; // Try to merge with previous command if it matches, else use current command ImDrawCmd *prev_cmd = curr_cmd - 1; if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL) { CmdBuffer.pop_back(); return; } curr_cmd->TexRef = _CmdHeader.TexRef; } void ImDrawList::_OnChangedVtxOffset() { // We don't need to compare curr_cmd->VtxOffset != _CmdHeader.VtxOffset because we know it'll be different at the // time we call this. _VtxCurrentIdx = 0; IM_ASSERT_PARANOID(CmdBuffer.Size > 0); ImDrawCmd *curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; // IM_ASSERT(curr_cmd->VtxOffset != _CmdHeader.VtxOffset); // See #3349 if (curr_cmd->ElemCount != 0) { AddDrawCmd(); return; } IM_ASSERT(curr_cmd->UserCallback == NULL); curr_cmd->VtxOffset = _CmdHeader.VtxOffset; } int ImDrawList::_CalcCircleAutoSegmentCount(float radius) const { // Automatic segment count const int radius_idx = (int)(radius + 0.999999f); // ceil to never reduce accuracy if (radius_idx >= 0 && radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts)) return _Data->CircleSegmentCounts[radius_idx]; // Use cached value else return IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError); } // Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. // Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling) void ImDrawList::PushClipRect(const ImVec2 &cr_min, const ImVec2 &cr_max, bool intersect_with_current_clip_rect) { ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y); if (intersect_with_current_clip_rect) { ImVec4 current = _CmdHeader.ClipRect; if (cr.x < current.x) cr.x = current.x; if (cr.y < current.y) cr.y = current.y; if (cr.z > current.z) cr.z = current.z; if (cr.w > current.w) cr.w = current.w; } cr.z = ImMax(cr.x, cr.z); cr.w = ImMax(cr.y, cr.w); _ClipRectStack.push_back(cr); _CmdHeader.ClipRect = cr; _OnChangedClipRect(); } void ImDrawList::PushClipRectFullScreen() { PushClipRect(ImVec2(_Data->ClipRectFullscreen.x, _Data->ClipRectFullscreen.y), ImVec2(_Data->ClipRectFullscreen.z, _Data->ClipRectFullscreen.w)); } void ImDrawList::PopClipRect() { _ClipRectStack.pop_back(); _CmdHeader.ClipRect = (_ClipRectStack.Size == 0) ? _Data->ClipRectFullscreen : _ClipRectStack.Data[_ClipRectStack.Size - 1]; _OnChangedClipRect(); } void ImDrawList::PushTexture(ImTextureRef tex_ref) { _TextureStack.push_back(tex_ref); _CmdHeader.TexRef = tex_ref; if (tex_ref._TexData != NULL) IM_ASSERT(tex_ref._TexData->WantDestroyNextFrame == false); _OnChangedTexture(); } void ImDrawList::PopTexture() { _TextureStack.pop_back(); _CmdHeader.TexRef = (_TextureStack.Size == 0) ? ImTextureRef() : _TextureStack.Data[_TextureStack.Size - 1]; _OnChangedTexture(); } // This is used by ImGui::PushFont()/PopFont(). It works because we never use _TextureIdStack[] elsewhere than in // PushTexture()/PopTexture(). void ImDrawList::_SetTexture(ImTextureRef tex_ref) { if (_CmdHeader.TexRef == tex_ref) return; _CmdHeader.TexRef = tex_ref; _OnChangedTexture(); } // Reserve space for a number of vertices and indices. // You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or // submit the intermediate results. PrimUnreserve() can be used to release unused allocations. void ImDrawList::PrimReserve(int idx_count, int vtx_count) { // Large mesh support (when enabled) IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0); if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset)) { // FIXME: In theory we should be testing that vtx_count <64k here. // In practice, RenderText() relies on reserving ahead for a worst case scenario so it is currently useful for // us to not make that check until we rework the text functions to handle clipping and large horizontal lines // better. _CmdHeader.VtxOffset = VtxBuffer.Size; _OnChangedVtxOffset(); } ImDrawCmd *draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; draw_cmd->ElemCount += idx_count; int vtx_buffer_old_size = VtxBuffer.Size; VtxBuffer.resize(vtx_buffer_old_size + vtx_count); _VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size; int idx_buffer_old_size = IdxBuffer.Size; IdxBuffer.resize(idx_buffer_old_size + idx_count); _IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size; } // Release the number of reserved vertices/indices from the end of the last reservation made with PrimReserve(). void ImDrawList::PrimUnreserve(int idx_count, int vtx_count) { IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0); ImDrawCmd *draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1]; draw_cmd->ElemCount -= idx_count; VtxBuffer.shrink(VtxBuffer.Size - vtx_count); IdxBuffer.shrink(IdxBuffer.Size - idx_count); } // Fully unrolled with inline call to keep our debug builds decently fast. void ImDrawList::PrimRect(const ImVec2 &a, const ImVec2 &c, ImU32 col) { ImVec2 b(c.x, a.y), d(a.x, c.y), uv(_Data->TexUvWhitePixel); ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx; _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx + 2); _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx + 3); _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col; _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col; _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col; _VtxWritePtr += 4; _VtxCurrentIdx += 4; _IdxWritePtr += 6; } void ImDrawList::PrimRectUV(const ImVec2 &a, const ImVec2 &c, const ImVec2 &uv_a, const ImVec2 &uv_c, ImU32 col) { ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y); ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx; _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx + 2); _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx + 3); _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col; _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col; _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col; _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col; _VtxWritePtr += 4; _VtxCurrentIdx += 4; _IdxWritePtr += 6; } void ImDrawList::PrimQuadUV(const ImVec2 &a, const ImVec2 &b, const ImVec2 &c, const ImVec2 &d, const ImVec2 &uv_a, const ImVec2 &uv_b, const ImVec2 &uv_c, const ImVec2 &uv_d, ImU32 col) { ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx; _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx + 2); _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx + 3); _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col; _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col; _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col; _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col; _VtxWritePtr += 4; _VtxCurrentIdx += 4; _IdxWritePtr += 6; } // On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superfluous function calls to // optimize debug/non-inlined builds. // - Those macros expects l-values and need to be used as their own statement. // - Those macros are intentionally not surrounded by the 'do {} while (0)' idiom because even that translates to // runtime with debug compilers. #define IM_NORMALIZE2F_OVER_ZERO(VX, VY) \ { \ float d2 = VX * VX + VY * VY; \ if (d2 > 0.0f) \ { \ float inv_len = ImRsqrt(d2); \ VX *= inv_len; \ VY *= inv_len; \ } \ } \ (void)0 #define IM_FIXNORMAL2F_MAX_INVLEN2 100.0f // 500.0f (see #4053, #3366) #define IM_FIXNORMAL2F(VX, VY) \ { \ float d2 = VX * VX + VY * VY; \ if (d2 > 0.000001f) \ { \ float inv_len2 = 1.0f / d2; \ if (inv_len2 > IM_FIXNORMAL2F_MAX_INVLEN2) \ inv_len2 = IM_FIXNORMAL2F_MAX_INVLEN2; \ VX *= inv_len2; \ VY *= inv_len2; \ } \ } \ (void)0 // TODO: Thickness anti-aliased lines cap are missing their AA fringe. // We avoid using the ImVec2 math operators here to reduce cost to a minimum for debug/non-inlined builds. void ImDrawList::AddPolyline(const ImVec2 *points, const int points_count, ImU32 col, ImDrawFlags flags, float thickness) { if (points_count < 2 || (col & IM_COL32_A_MASK) == 0) return; const bool closed = (flags & ImDrawFlags_Closed) != 0; const ImVec2 opaque_uv = _Data->TexUvWhitePixel; const int count = closed ? points_count : points_count - 1; // The number of line segments we need to draw const bool thick_line = (thickness > _FringeScale); if (Flags & ImDrawListFlags_AntiAliasedLines) { // Anti-aliased stroke const float AA_SIZE = _FringeScale; const ImU32 col_trans = col & ~IM_COL32_A_MASK; // Thicknesses <1.0 should behave like thickness 1.0 thickness = ImMax(thickness, 1.0f); const int integer_thickness = (int)thickness; const float fractional_thickness = thickness - integer_thickness; // Do we want to draw this line using a texture? // - For now, only draw integer-width lines using textures to avoid issues with the way scaling occurs, could be // improved. // - If AA_SIZE is not 1.0f we cannot use the texture path. const bool use_texture = (Flags & ImDrawListFlags_AntiAliasedLinesUseTex) && (integer_thickness < IM_DRAWLIST_TEX_LINES_WIDTH_MAX) && (fractional_thickness <= 0.00001f) && (AA_SIZE == 1.0f); // We should never hit this, because NewFrame() doesn't set ImDrawListFlags_AntiAliasedLinesUseTex unless // ImFontAtlasFlags_NoBakedLines is off IM_ASSERT_PARANOID(!use_texture || !(_Data->Font->ContainerAtlas->Flags & ImFontAtlasFlags_NoBakedLines)); const int idx_count = use_texture ? (count * 6) : (thick_line ? count * 18 : count * 12); const int vtx_count = use_texture ? (points_count * 2) : (thick_line ? points_count * 4 : points_count * 3); PrimReserve(idx_count, vtx_count); // Temporary buffer // The first items are normals at each line point, then after that there are either 2 or 4 temp // points for each line point _Data->TempBuffer.reserve_discard(points_count * ((use_texture || !thick_line) ? 3 : 5)); ImVec2 *temp_normals = _Data->TempBuffer.Data; ImVec2 *temp_points = temp_normals + points_count; // Calculate normals (tangents) for each line segment for (int i1 = 0; i1 < count; i1++) { const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1; float dx = points[i2].x - points[i1].x; float dy = points[i2].y - points[i1].y; IM_NORMALIZE2F_OVER_ZERO(dx, dy); temp_normals[i1].x = dy; temp_normals[i1].y = -dx; } if (!closed) temp_normals[points_count - 1] = temp_normals[points_count - 2]; // If we are drawing a one-pixel-wide line without a texture, or a textured line of any width, we only need 2 or // 3 vertices per point if (use_texture || !thick_line) { // [PATH 1] Texture-based lines (thick or non-thick) // [PATH 2] Non texture-based lines (non-thick) // The width of the geometry we need to draw - this is essentially pixels for the line itself, // plus "one pixel" for AA. // - In the texture-based path, we don't use AA_SIZE here because the +1 is tied to the generated texture // (see ImFontAtlasBuildRenderLinesTexData() function), and so alternate values won't work without changes // to that code. // - In the non texture-based paths, we would allow AA_SIZE to potentially be != 1.0f with a patch (e.g. // fringe_scale patch to // allow scaling geometry while preserving one-screen-pixel AA fringe). const float half_draw_size = use_texture ? ((thickness * 0.5f) + 1) : AA_SIZE; // If line is not closed, the first and last points need to be generated differently as there are no normals // to blend if (!closed) { temp_points[0] = points[0] + temp_normals[0] * half_draw_size; temp_points[1] = points[0] - temp_normals[0] * half_draw_size; temp_points[(points_count - 1) * 2 + 0] = points[points_count - 1] + temp_normals[points_count - 1] * half_draw_size; temp_points[(points_count - 1) * 2 + 1] = points[points_count - 1] - temp_normals[points_count - 1] * half_draw_size; } // Generate the indices to form a number of triangles for each line segment, and the vertices for the line // edges This takes points n and n+1 and writes into n+1, with the first point in a closed line being // generated from the final one (as n+1 wraps) // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer. unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment { const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1; // i2 is the second point of the line segment const unsigned int idx2 = ((i1 + 1) == points_count) ? _VtxCurrentIdx : (idx1 + (use_texture ? 2 : 3)); // Vertex index for end of segment // Average normals float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f; float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f; IM_FIXNORMAL2F(dm_x, dm_y); dm_x *= half_draw_size; // dm_x, dm_y are offset to the outer edge of the AA area dm_y *= half_draw_size; // Add temporary vertices for the outer edges ImVec2 *out_vtx = &temp_points[i2 * 2]; out_vtx[0].x = points[i2].x + dm_x; out_vtx[0].y = points[i2].y + dm_y; out_vtx[1].x = points[i2].x - dm_x; out_vtx[1].y = points[i2].y - dm_y; if (use_texture) { // Add indices for two triangles _IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 1); // Right tri _IdxWritePtr[3] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[4] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Left tri _IdxWritePtr += 6; } else { // Add indexes for four triangles _IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2); // Right tri 1 _IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Right tri 2 _IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0); // Left tri 1 _IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1); // Left tri 2 _IdxWritePtr += 12; } idx1 = idx2; } // Add vertices for each point on the line if (use_texture) { // If we're using textures we only need to emit the left/right edge vertices ImVec4 tex_uvs = _Data->TexUvLines[integer_thickness]; /*if (fractional_thickness != 0.0f) // Currently always zero when use_texture==false! { const ImVec4 tex_uvs_1 = _Data->TexUvLines[integer_thickness + 1]; tex_uvs.x = tex_uvs.x + (tex_uvs_1.x - tex_uvs.x) * fractional_thickness; // inlined ImLerp() tex_uvs.y = tex_uvs.y + (tex_uvs_1.y - tex_uvs.y) * fractional_thickness; tex_uvs.z = tex_uvs.z + (tex_uvs_1.z - tex_uvs.z) * fractional_thickness; tex_uvs.w = tex_uvs.w + (tex_uvs_1.w - tex_uvs.w) * fractional_thickness; }*/ ImVec2 tex_uv0(tex_uvs.x, tex_uvs.y); ImVec2 tex_uv1(tex_uvs.z, tex_uvs.w); for (int i = 0; i < points_count; i++) { _VtxWritePtr[0].pos = temp_points[i * 2 + 0]; _VtxWritePtr[0].uv = tex_uv0; _VtxWritePtr[0].col = col; // Left-side outer edge _VtxWritePtr[1].pos = temp_points[i * 2 + 1]; _VtxWritePtr[1].uv = tex_uv1; _VtxWritePtr[1].col = col; // Right-side outer edge _VtxWritePtr += 2; } } else { // If we're not using a texture, we need the center vertex as well for (int i = 0; i < points_count; i++) { _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col; // Center of line _VtxWritePtr[1].pos = temp_points[i * 2 + 0]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col_trans; // Left-side outer edge _VtxWritePtr[2].pos = temp_points[i * 2 + 1]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col_trans; // Right-side outer edge _VtxWritePtr += 3; } } } else { // [PATH 2] Non texture-based lines (thick): we need to draw the solid line core and thus require four // vertices per point const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f; // If line is not closed, the first and last points need to be generated differently as there are no normals // to blend if (!closed) { const int points_last = points_count - 1; temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE); temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness); temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness); temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE); temp_points[points_last * 4 + 0] = points[points_last] + temp_normals[points_last] * (half_inner_thickness + AA_SIZE); temp_points[points_last * 4 + 1] = points[points_last] + temp_normals[points_last] * (half_inner_thickness); temp_points[points_last * 4 + 2] = points[points_last] - temp_normals[points_last] * (half_inner_thickness); temp_points[points_last * 4 + 3] = points[points_last] - temp_normals[points_last] * (half_inner_thickness + AA_SIZE); } // Generate the indices to form a number of triangles for each line segment, and the vertices for the line // edges This takes points n and n+1 and writes into n+1, with the first point in a closed line being // generated from the final one (as n+1 wraps) // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer. unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment { const int i2 = (i1 + 1) == points_count ? 0 : (i1 + 1); // i2 is the second point of the line segment const unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : (idx1 + 4); // Vertex index for end of segment // Average normals float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f; float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f; IM_FIXNORMAL2F(dm_x, dm_y); float dm_out_x = dm_x * (half_inner_thickness + AA_SIZE); float dm_out_y = dm_y * (half_inner_thickness + AA_SIZE); float dm_in_x = dm_x * half_inner_thickness; float dm_in_y = dm_y * half_inner_thickness; // Add temporary vertices ImVec2 *out_vtx = &temp_points[i2 * 4]; out_vtx[0].x = points[i2].x + dm_out_x; out_vtx[0].y = points[i2].y + dm_out_y; out_vtx[1].x = points[i2].x + dm_in_x; out_vtx[1].y = points[i2].y + dm_in_y; out_vtx[2].x = points[i2].x - dm_in_x; out_vtx[2].y = points[i2].y - dm_in_y; out_vtx[3].x = points[i2].x - dm_out_x; out_vtx[3].y = points[i2].y - dm_out_y; // Add indexes _IdxWritePtr[0] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[12] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[13] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[14] = (ImDrawIdx)(idx1 + 3); _IdxWritePtr[15] = (ImDrawIdx)(idx1 + 3); _IdxWritePtr[16] = (ImDrawIdx)(idx2 + 3); _IdxWritePtr[17] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr += 18; idx1 = idx2; } // Add vertices for (int i = 0; i < points_count; i++) { _VtxWritePtr[0].pos = temp_points[i * 4 + 0]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col_trans; _VtxWritePtr[1].pos = temp_points[i * 4 + 1]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col; _VtxWritePtr[2].pos = temp_points[i * 4 + 2]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col; _VtxWritePtr[3].pos = temp_points[i * 4 + 3]; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col_trans; _VtxWritePtr += 4; } } _VtxCurrentIdx += (ImDrawIdx)vtx_count; } else { // [PATH 4] Non texture-based, Non anti-aliased lines const int idx_count = count * 6; const int vtx_count = count * 4; // FIXME-OPT: Not sharing edges PrimReserve(idx_count, vtx_count); for (int i1 = 0; i1 < count; i1++) { const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1; const ImVec2 &p1 = points[i1]; const ImVec2 &p2 = points[i2]; float dx = p2.x - p1.x; float dy = p2.y - p1.y; IM_NORMALIZE2F_OVER_ZERO(dx, dy); dx *= (thickness * 0.5f); dy *= (thickness * 0.5f); _VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col; _VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col; _VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col; _VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col; _VtxWritePtr += 4; _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + 2); _IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx + 2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx + 3); _IdxWritePtr += 6; _VtxCurrentIdx += 4; } } } // - We intentionally avoid using ImVec2 and its math operators here to reduce cost to a minimum for debug/non-inlined // builds. // - Filled shapes must always use clockwise winding order. The anti-aliasing fringe depends on it. Counter-clockwise // shapes will have "inward" anti-aliasing. void ImDrawList::AddConvexPolyFilled(const ImVec2 *points, const int points_count, ImU32 col) { if (points_count < 3 || (col & IM_COL32_A_MASK) == 0) return; const ImVec2 uv = _Data->TexUvWhitePixel; if (Flags & ImDrawListFlags_AntiAliasedFill) { // Anti-aliased Fill const float AA_SIZE = _FringeScale; const ImU32 col_trans = col & ~IM_COL32_A_MASK; const int idx_count = (points_count - 2) * 3 + points_count * 6; const int vtx_count = (points_count * 2); PrimReserve(idx_count, vtx_count); // Add indexes for fill unsigned int vtx_inner_idx = _VtxCurrentIdx; unsigned int vtx_outer_idx = _VtxCurrentIdx + 1; for (int i = 2; i < points_count; i++) { _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + ((i - 1) << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (i << 1)); _IdxWritePtr += 3; } // Compute normals _Data->TempBuffer.reserve_discard(points_count); ImVec2 *temp_normals = _Data->TempBuffer.Data; for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++) { const ImVec2 &p0 = points[i0]; const ImVec2 &p1 = points[i1]; float dx = p1.x - p0.x; float dy = p1.y - p0.y; IM_NORMALIZE2F_OVER_ZERO(dx, dy); temp_normals[i0].x = dy; temp_normals[i0].y = -dx; } for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++) { // Average normals const ImVec2 &n0 = temp_normals[i0]; const ImVec2 &n1 = temp_normals[i1]; float dm_x = (n0.x + n1.x) * 0.5f; float dm_y = (n0.y + n1.y) * 0.5f; IM_FIXNORMAL2F(dm_x, dm_y); dm_x *= AA_SIZE * 0.5f; dm_y *= AA_SIZE * 0.5f; // Add vertices _VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner _VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer _VtxWritePtr += 2; // Add indexes for fringes _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr += 6; } _VtxCurrentIdx += (ImDrawIdx)vtx_count; } else { // Non Anti-aliased Fill const int idx_count = (points_count - 2) * 3; const int vtx_count = points_count; PrimReserve(idx_count, vtx_count); for (int i = 0; i < vtx_count; i++) { _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; _VtxWritePtr++; } for (int i = 2; i < points_count; i++) { _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + i - 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + i); _IdxWritePtr += 3; } _VtxCurrentIdx += (ImDrawIdx)vtx_count; } } void ImDrawList::_PathArcToFastEx(const ImVec2 ¢er, float radius, int a_min_sample, int a_max_sample, int a_step) { if (radius < 0.5f) { _Path.push_back(center); return; } // Calculate arc auto segment step size if (a_step <= 0) a_step = IM_DRAWLIST_ARCFAST_SAMPLE_MAX / _CalcCircleAutoSegmentCount(radius); // Make sure we never do steps larger than one quarter of the circle a_step = ImClamp(a_step, 1, IM_DRAWLIST_ARCFAST_TABLE_SIZE / 4); const int sample_range = ImAbs(a_max_sample - a_min_sample); const int a_next_step = a_step; int samples = sample_range + 1; bool extra_max_sample = false; if (a_step > 1) { samples = sample_range / a_step + 1; const int overstep = sample_range % a_step; if (overstep > 0) { extra_max_sample = true; samples++; // When we have overstep to avoid awkwardly looking one long line and one tiny one at the end, // distribute first step range evenly between them by reducing first step size. if (sample_range > 0) a_step -= (a_step - overstep) / 2; } } _Path.resize(_Path.Size + samples); ImVec2 *out_ptr = _Path.Data + (_Path.Size - samples); int sample_index = a_min_sample; if (sample_index < 0 || sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX) { sample_index = sample_index % IM_DRAWLIST_ARCFAST_SAMPLE_MAX; if (sample_index < 0) sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX; } if (a_max_sample >= a_min_sample) { for (int a = a_min_sample; a <= a_max_sample; a += a_step, sample_index += a_step, a_step = a_next_step) { // a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over // range twice or more if (sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX) sample_index -= IM_DRAWLIST_ARCFAST_SAMPLE_MAX; const ImVec2 s = _Data->ArcFastVtx[sample_index]; out_ptr->x = center.x + s.x * radius; out_ptr->y = center.y + s.y * radius; out_ptr++; } } else { for (int a = a_min_sample; a >= a_max_sample; a -= a_step, sample_index -= a_step, a_step = a_next_step) { // a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over // range twice or more if (sample_index < 0) sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX; const ImVec2 s = _Data->ArcFastVtx[sample_index]; out_ptr->x = center.x + s.x * radius; out_ptr->y = center.y + s.y * radius; out_ptr++; } } if (extra_max_sample) { int normalized_max_sample = a_max_sample % IM_DRAWLIST_ARCFAST_SAMPLE_MAX; if (normalized_max_sample < 0) normalized_max_sample += IM_DRAWLIST_ARCFAST_SAMPLE_MAX; const ImVec2 s = _Data->ArcFastVtx[normalized_max_sample]; out_ptr->x = center.x + s.x * radius; out_ptr->y = center.y + s.y * radius; out_ptr++; } IM_ASSERT_PARANOID(_Path.Data + _Path.Size == out_ptr); } void ImDrawList::_PathArcToN(const ImVec2 ¢er, float radius, float a_min, float a_max, int num_segments) { if (radius < 0.5f) { _Path.push_back(center); return; } // Note that we are adding a point at both a_min and a_max. // If you are trying to draw a full closed circle you don't want the overlapping points! _Path.reserve(_Path.Size + (num_segments + 1)); for (int i = 0; i <= num_segments; i++) { const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min); _Path.push_back(ImVec2(center.x + ImCos(a) * radius, center.y + ImSin(a) * radius)); } } // 0: East, 3: South, 6: West, 9: North, 12: East void ImDrawList::PathArcToFast(const ImVec2 ¢er, float radius, int a_min_of_12, int a_max_of_12) { if (radius < 0.5f) { _Path.push_back(center); return; } _PathArcToFastEx(center, radius, a_min_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, a_max_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, 0); } void ImDrawList::PathArcTo(const ImVec2 ¢er, float radius, float a_min, float a_max, int num_segments) { if (radius < 0.5f) { _Path.push_back(center); return; } if (num_segments > 0) { _PathArcToN(center, radius, a_min, a_max, num_segments); return; } // Automatic segment count if (radius <= _Data->ArcFastRadiusCutoff) { const bool a_is_reverse = a_max < a_min; // We are going to use precomputed values for mid samples. // Determine first and last sample in lookup table that belong to the arc. const float a_min_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_min / (IM_PI * 2.0f); const float a_max_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_max / (IM_PI * 2.0f); const int a_min_sample = a_is_reverse ? (int)ImFloor(a_min_sample_f) : (int)ImCeil(a_min_sample_f); const int a_max_sample = a_is_reverse ? (int)ImCeil(a_max_sample_f) : (int)ImFloor(a_max_sample_f); const int a_mid_samples = a_is_reverse ? ImMax(a_min_sample - a_max_sample, 0) : ImMax(a_max_sample - a_min_sample, 0); const float a_min_segment_angle = a_min_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX; const float a_max_segment_angle = a_max_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX; const bool a_emit_start = ImAbs(a_min_segment_angle - a_min) >= 1e-5f; const bool a_emit_end = ImAbs(a_max - a_max_segment_angle) >= 1e-5f; _Path.reserve(_Path.Size + (a_mid_samples + 1 + (a_emit_start ? 1 : 0) + (a_emit_end ? 1 : 0))); if (a_emit_start) _Path.push_back(ImVec2(center.x + ImCos(a_min) * radius, center.y + ImSin(a_min) * radius)); if (a_mid_samples > 0) _PathArcToFastEx(center, radius, a_min_sample, a_max_sample, 0); if (a_emit_end) _Path.push_back(ImVec2(center.x + ImCos(a_max) * radius, center.y + ImSin(a_max) * radius)); } else { const float arc_length = ImAbs(a_max - a_min); const int circle_segment_count = _CalcCircleAutoSegmentCount(radius); const int arc_segment_count = ImMax((int)ImCeil(circle_segment_count * arc_length / (IM_PI * 2.0f)), (int)(2.0f * IM_PI / arc_length)); _PathArcToN(center, radius, a_min, a_max, arc_segment_count); } } void ImDrawList::PathEllipticalArcTo(const ImVec2 ¢er, const ImVec2 &radius, float rot, float a_min, float a_max, int num_segments) { if (num_segments <= 0) num_segments = _CalcCircleAutoSegmentCount( ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here. _Path.reserve(_Path.Size + (num_segments + 1)); const float cos_rot = ImCos(rot); const float sin_rot = ImSin(rot); for (int i = 0; i <= num_segments; i++) { const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min); ImVec2 point(ImCos(a) * radius.x, ImSin(a) * radius.y); const ImVec2 rel((point.x * cos_rot) - (point.y * sin_rot), (point.x * sin_rot) + (point.y * cos_rot)); point.x = rel.x + center.x; point.y = rel.y + center.y; _Path.push_back(point); } } ImVec2 ImBezierCubicCalc(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, float t) { float u = 1.0f - t; float w1 = u * u * u; float w2 = 3 * u * u * t; float w3 = 3 * u * t * t; float w4 = t * t * t; return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x, w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y); } ImVec2 ImBezierQuadraticCalc(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, float t) { float u = 1.0f - t; float w1 = u * u; float w2 = 2 * u * t; float w3 = t * t; return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x, w1 * p1.y + w2 * p2.y + w3 * p3.y); } // Closely mimics ImBezierCubicClosestPointCasteljau() in imgui.cpp static void PathBezierCubicCurveToCasteljau(ImVector *path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level) { float dx = x4 - x1; float dy = y4 - y1; float d2 = (x2 - x4) * dy - (y2 - y4) * dx; float d3 = (x3 - x4) * dy - (y3 - y4) * dx; d2 = (d2 >= 0) ? d2 : -d2; d3 = (d3 >= 0) ? d3 : -d3; if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy)) { path->push_back(ImVec2(x4, y4)); } else if (level < 10) { float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f; float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f; float x34 = (x3 + x4) * 0.5f, y34 = (y3 + y4) * 0.5f; float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f; float x234 = (x23 + x34) * 0.5f, y234 = (y23 + y34) * 0.5f; float x1234 = (x123 + x234) * 0.5f, y1234 = (y123 + y234) * 0.5f; PathBezierCubicCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1); PathBezierCubicCurveToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1); } } static void PathBezierQuadraticCurveToCasteljau(ImVector *path, float x1, float y1, float x2, float y2, float x3, float y3, float tess_tol, int level) { float dx = x3 - x1, dy = y3 - y1; float det = (x2 - x3) * dy - (y2 - y3) * dx; if (det * det * 4.0f < tess_tol * (dx * dx + dy * dy)) { path->push_back(ImVec2(x3, y3)); } else if (level < 10) { float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f; float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f; float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f; PathBezierQuadraticCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, tess_tol, level + 1); PathBezierQuadraticCurveToCasteljau(path, x123, y123, x23, y23, x3, y3, tess_tol, level + 1); } } void ImDrawList::PathBezierCubicCurveTo(const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, int num_segments) { ImVec2 p1 = _Path.back(); if (num_segments == 0) { IM_ASSERT(_Data->CurveTessellationTol > 0.0f); PathBezierCubicCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated } else { float t_step = 1.0f / (float)num_segments; for (int i_step = 1; i_step <= num_segments; i_step++) _Path.push_back(ImBezierCubicCalc(p1, p2, p3, p4, t_step * i_step)); } } void ImDrawList::PathBezierQuadraticCurveTo(const ImVec2 &p2, const ImVec2 &p3, int num_segments) { ImVec2 p1 = _Path.back(); if (num_segments == 0) { IM_ASSERT(_Data->CurveTessellationTol > 0.0f); PathBezierQuadraticCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, _Data->CurveTessellationTol, 0); // Auto-tessellated } else { float t_step = 1.0f / (float)num_segments; for (int i_step = 1; i_step <= num_segments; i_step++) _Path.push_back(ImBezierQuadraticCalc(p1, p2, p3, t_step * i_step)); } } static inline ImDrawFlags FixRectCornerFlags(ImDrawFlags flags) { /* IM_STATIC_ASSERT(ImDrawFlags_RoundCornersTopLeft == (1 << 4)); #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS // Obsoleted in 1.82 (from February 2021). This code was stripped/simplified and mostly commented in 1.90 (from September 2023) // - Legacy Support for hard coded ~0 (used to be a suggested equivalent to ImDrawCornerFlags_All) if (flags == ~0) { return ImDrawFlags_RoundCornersAll; } // - Legacy Support for hard coded 0x01 to 0x0F (matching 15 out of 16 old flags combinations). Read details in older version of this code. if (flags >= 0x01 && flags <= 0x0F) { return (flags << 4); } // We cannot support hard coded 0x00 with 'float rounding > 0.0f' --> replace with ImDrawFlags_RoundCornersNone or use 'float rounding = 0.0f' #endif */ // If this assert triggers, please update your code replacing hardcoded values with new ImDrawFlags_RoundCorners* // values. Note that ImDrawFlags_Closed (== 0x01) is an invalid flag for AddRect(), AddRectFilled(), PathRect() etc. // anyway. See details in 1.82 Changelog as well as 2021/03/12 and 2023/09/08 entries in "API BREAKING CHANGES" // section. IM_ASSERT((flags & 0x0F) == 0 && "Misuse of legacy hardcoded ImDrawCornerFlags values!"); if ((flags & ImDrawFlags_RoundCornersMask_) == 0) flags |= ImDrawFlags_RoundCornersAll; return flags; } void ImDrawList::PathRect(const ImVec2 &a, const ImVec2 &b, float rounding, ImDrawFlags flags) { if (rounding >= 0.5f) { flags = FixRectCornerFlags(flags); rounding = ImMin(rounding, ImFabs(b.x - a.x) * (((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f) - 1.0f); rounding = ImMin(rounding, ImFabs(b.y - a.y) * (((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f) - 1.0f); } if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone) { PathLineTo(a); PathLineTo(ImVec2(b.x, a.y)); PathLineTo(b); PathLineTo(ImVec2(a.x, b.y)); } else { const float rounding_tl = (flags & ImDrawFlags_RoundCornersTopLeft) ? rounding : 0.0f; const float rounding_tr = (flags & ImDrawFlags_RoundCornersTopRight) ? rounding : 0.0f; const float rounding_br = (flags & ImDrawFlags_RoundCornersBottomRight) ? rounding : 0.0f; const float rounding_bl = (flags & ImDrawFlags_RoundCornersBottomLeft) ? rounding : 0.0f; PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9); PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12); PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3); PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6); } } void ImDrawList::AddLine(const ImVec2 &p1, const ImVec2 &p2, ImU32 col, float thickness) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1 + ImVec2(0.5f, 0.5f)); PathLineTo(p2 + ImVec2(0.5f, 0.5f)); PathStroke(col, 0, thickness); } // p_min = upper-left, p_max = lower-right // Note we don't render 1 pixels sized rectangles properly. void ImDrawList::AddRect(const ImVec2 &p_min, const ImVec2 &p_max, ImU32 col, float rounding, ImDrawFlags flags, float thickness) { if ((col & IM_COL32_A_MASK) == 0) return; if (Flags & ImDrawListFlags_AntiAliasedLines) PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.50f, 0.50f), rounding, flags); else PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.49f, 0.49f), rounding, flags); // Better looking lower-right corner and rounded non-AA shapes. PathStroke(col, ImDrawFlags_Closed, thickness); } void ImDrawList::AddRectFilled(const ImVec2 &p_min, const ImVec2 &p_max, ImU32 col, float rounding, ImDrawFlags flags) { if ((col & IM_COL32_A_MASK) == 0) return; if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone) { PrimReserve(6, 4); PrimRect(p_min, p_max, col); } else { PathRect(p_min, p_max, rounding, flags); PathFillConvex(col); } } // p_min = upper-left, p_max = lower-right void ImDrawList::AddRectFilledMultiColor(const ImVec2 &p_min, const ImVec2 &p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left) { if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0) return; const ImVec2 uv = _Data->TexUvWhitePixel; PrimReserve(6, 4); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 3)); PrimWriteVtx(p_min, uv, col_upr_left); PrimWriteVtx(ImVec2(p_max.x, p_min.y), uv, col_upr_right); PrimWriteVtx(p_max, uv, col_bot_right); PrimWriteVtx(ImVec2(p_min.x, p_max.y), uv, col_bot_left); } void ImDrawList::AddQuad(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, ImU32 col, float thickness) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathLineTo(p2); PathLineTo(p3); PathLineTo(p4); PathStroke(col, ImDrawFlags_Closed, thickness); } void ImDrawList::AddQuadFilled(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, ImU32 col) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathLineTo(p2); PathLineTo(p3); PathLineTo(p4); PathFillConvex(col); } void ImDrawList::AddTriangle(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, ImU32 col, float thickness) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathLineTo(p2); PathLineTo(p3); PathStroke(col, ImDrawFlags_Closed, thickness); } void ImDrawList::AddTriangleFilled(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, ImU32 col) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathLineTo(p2); PathLineTo(p3); PathFillConvex(col); } void ImDrawList::AddCircle(const ImVec2 ¢er, float radius, ImU32 col, int num_segments, float thickness) { if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f) return; if (num_segments <= 0) { // Use arc with automatic segment count _PathArcToFastEx(center, radius - 0.5f, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0); _Path.Size--; } else { // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes) num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX); // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments; PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1); } PathStroke(col, ImDrawFlags_Closed, thickness); } void ImDrawList::AddCircleFilled(const ImVec2 ¢er, float radius, ImU32 col, int num_segments) { if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f) return; if (num_segments <= 0) { // Use arc with automatic segment count _PathArcToFastEx(center, radius, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0); _Path.Size--; } else { // Explicit segment count (still clamp to avoid drawing insanely tessellated shapes) num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX); // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments; PathArcTo(center, radius, 0.0f, a_max, num_segments - 1); } PathFillConvex(col); } // Guaranteed to honor 'num_segments' void ImDrawList::AddNgon(const ImVec2 ¢er, float radius, ImU32 col, int num_segments, float thickness) { if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2) return; // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments; PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1); PathStroke(col, ImDrawFlags_Closed, thickness); } // Guaranteed to honor 'num_segments' void ImDrawList::AddNgonFilled(const ImVec2 ¢er, float radius, ImU32 col, int num_segments) { if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2) return; // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments; PathArcTo(center, radius, 0.0f, a_max, num_segments - 1); PathFillConvex(col); } // Ellipse void ImDrawList::AddEllipse(const ImVec2 ¢er, const ImVec2 &radius, ImU32 col, float rot, int num_segments, float thickness) { if ((col & IM_COL32_A_MASK) == 0) return; if (num_segments <= 0) num_segments = _CalcCircleAutoSegmentCount( ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here. // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments; PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1); PathStroke(col, true, thickness); } void ImDrawList::AddEllipseFilled(const ImVec2 ¢er, const ImVec2 &radius, ImU32 col, float rot, int num_segments) { if ((col & IM_COL32_A_MASK) == 0) return; if (num_segments <= 0) num_segments = _CalcCircleAutoSegmentCount( ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here. // Because we are filling a closed shape we remove 1 from the count of segments/points const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments; PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1); PathFillConvex(col); } // Cubic Bezier takes 4 controls points void ImDrawList::AddBezierCubic(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, ImU32 col, float thickness, int num_segments) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathBezierCubicCurveTo(p2, p3, p4, num_segments); PathStroke(col, 0, thickness); } // Quadratic Bezier takes 3 controls points void ImDrawList::AddBezierQuadratic(const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, ImU32 col, float thickness, int num_segments) { if ((col & IM_COL32_A_MASK) == 0) return; PathLineTo(p1); PathBezierQuadraticCurveTo(p2, p3, num_segments); PathStroke(col, 0, thickness); } void ImDrawList::AddText(ImFont *font, float font_size, const ImVec2 &pos, ImU32 col, const char *text_begin, const char *text_end, float wrap_width, const ImVec4 *cpu_fine_clip_rect) { if ((col & IM_COL32_A_MASK) == 0) return; // Accept null ranges if (text_begin == text_end || text_begin[0] == 0) return; // No need to strlen() here: font->RenderText() will do it and may early out. // Pull default font/size from the shared ImDrawListSharedData instance if (font == NULL) font = _Data->Font; if (font_size == 0.0f) font_size = _Data->FontSize; ImVec4 clip_rect = _CmdHeader.ClipRect; if (cpu_fine_clip_rect) { clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x); clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y); clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z); clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w); } font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL); } void ImDrawList::AddText(const ImVec2 &pos, ImU32 col, const char *text_begin, const char *text_end) { AddText(_Data->Font, _Data->FontSize, pos, col, text_begin, text_end); } void ImDrawList::AddImage(ImTextureRef tex_ref, const ImVec2 &p_min, const ImVec2 &p_max, const ImVec2 &uv_min, const ImVec2 &uv_max, ImU32 col) { if ((col & IM_COL32_A_MASK) == 0) return; const bool push_texture_id = tex_ref != _CmdHeader.TexRef; if (push_texture_id) PushTexture(tex_ref); PrimReserve(6, 4); PrimRectUV(p_min, p_max, uv_min, uv_max, col); if (push_texture_id) PopTexture(); } void ImDrawList::AddImageQuad(ImTextureRef tex_ref, const ImVec2 &p1, const ImVec2 &p2, const ImVec2 &p3, const ImVec2 &p4, const ImVec2 &uv1, const ImVec2 &uv2, const ImVec2 &uv3, const ImVec2 &uv4, ImU32 col) { if ((col & IM_COL32_A_MASK) == 0) return; const bool push_texture_id = tex_ref != _CmdHeader.TexRef; if (push_texture_id) PushTexture(tex_ref); PrimReserve(6, 4); PrimQuadUV(p1, p2, p3, p4, uv1, uv2, uv3, uv4, col); if (push_texture_id) PopTexture(); } void ImDrawList::AddImageRounded(ImTextureRef tex_ref, const ImVec2 &p_min, const ImVec2 &p_max, const ImVec2 &uv_min, const ImVec2 &uv_max, ImU32 col, float rounding, ImDrawFlags flags) { if ((col & IM_COL32_A_MASK) == 0) return; flags = FixRectCornerFlags(flags); if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone) { AddImage(tex_ref, p_min, p_max, uv_min, uv_max, col); return; } const bool push_texture_id = tex_ref != _CmdHeader.TexRef; if (push_texture_id) PushTexture(tex_ref); int vert_start_idx = VtxBuffer.Size; PathRect(p_min, p_max, rounding, flags); PathFillConvex(col); int vert_end_idx = VtxBuffer.Size; ImGui::ShadeVertsLinearUV(this, vert_start_idx, vert_end_idx, p_min, p_max, uv_min, uv_max, true); if (push_texture_id) PopTexture(); } //----------------------------------------------------------------------------- // [SECTION] ImTriangulator, ImDrawList concave polygon fill //----------------------------------------------------------------------------- // Triangulate concave polygons. Based on "Triangulation by Ear Clipping" paper, O(N^2) complexity. // Reference: https://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf // Provided as a convenience for user but not used by main library. //----------------------------------------------------------------------------- // - ImTriangulator [Internal] // - AddConcavePolyFilled() //----------------------------------------------------------------------------- enum ImTriangulatorNodeType { ImTriangulatorNodeType_Convex, ImTriangulatorNodeType_Ear, ImTriangulatorNodeType_Reflex }; struct ImTriangulatorNode { ImTriangulatorNodeType Type; int Index; ImVec2 Pos; ImTriangulatorNode *Next; ImTriangulatorNode *Prev; void Unlink() { Next->Prev = Prev; Prev->Next = Next; } }; struct ImTriangulatorNodeSpan { ImTriangulatorNode **Data = NULL; int Size = 0; void push_back(ImTriangulatorNode *node) { Data[Size++] = node; } void find_erase_unsorted(int idx) { for (int i = Size - 1; i >= 0; i--) if (Data[i]->Index == idx) { Data[i] = Data[Size - 1]; Size--; return; } } }; struct ImTriangulator { static int EstimateTriangleCount(int points_count) { return (points_count < 3) ? 0 : points_count - 2; } static int EstimateScratchBufferSize(int points_count) { return sizeof(ImTriangulatorNode) * points_count + sizeof(ImTriangulatorNode *) * points_count * 2; } void Init(const ImVec2 *points, int points_count, void *scratch_buffer); void GetNextTriangle(unsigned int out_triangle[3]); // Return relative indexes for next triangle // Internal functions void BuildNodes(const ImVec2 *points, int points_count); void BuildReflexes(); void BuildEars(); void FlipNodeList(); bool IsEar(int i0, int i1, int i2, const ImVec2 &v0, const ImVec2 &v1, const ImVec2 &v2) const; void ReclassifyNode(ImTriangulatorNode *node); // Internal members int _TrianglesLeft = 0; ImTriangulatorNode *_Nodes = NULL; ImTriangulatorNodeSpan _Ears; ImTriangulatorNodeSpan _Reflexes; }; // Distribute storage for nodes, ears and reflexes. // FIXME-OPT: if everything is convex, we could report it to caller and let it switch to an convex renderer // (this would require first building reflexes to bail to convex if empty, without even building nodes) void ImTriangulator::Init(const ImVec2 *points, int points_count, void *scratch_buffer) { IM_ASSERT(scratch_buffer != NULL && points_count >= 3); _TrianglesLeft = EstimateTriangleCount(points_count); _Nodes = (ImTriangulatorNode *)scratch_buffer; // points_count x Node _Ears.Data = (ImTriangulatorNode **)(_Nodes + points_count); // points_count x Node* _Reflexes.Data = (ImTriangulatorNode **)(_Nodes + points_count) + points_count; // points_count x Node* BuildNodes(points, points_count); BuildReflexes(); BuildEars(); } void ImTriangulator::BuildNodes(const ImVec2 *points, int points_count) { for (int i = 0; i < points_count; i++) { _Nodes[i].Type = ImTriangulatorNodeType_Convex; _Nodes[i].Index = i; _Nodes[i].Pos = points[i]; _Nodes[i].Next = _Nodes + i + 1; _Nodes[i].Prev = _Nodes + i - 1; } _Nodes[0].Prev = _Nodes + points_count - 1; _Nodes[points_count - 1].Next = _Nodes; } void ImTriangulator::BuildReflexes() { ImTriangulatorNode *n1 = _Nodes; for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next) { if (ImTriangleIsClockwise(n1->Prev->Pos, n1->Pos, n1->Next->Pos)) continue; n1->Type = ImTriangulatorNodeType_Reflex; _Reflexes.push_back(n1); } } void ImTriangulator::BuildEars() { ImTriangulatorNode *n1 = _Nodes; for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next) { if (n1->Type != ImTriangulatorNodeType_Convex) continue; if (!IsEar(n1->Prev->Index, n1->Index, n1->Next->Index, n1->Prev->Pos, n1->Pos, n1->Next->Pos)) continue; n1->Type = ImTriangulatorNodeType_Ear; _Ears.push_back(n1); } } void ImTriangulator::GetNextTriangle(unsigned int out_triangle[3]) { if (_Ears.Size == 0) { FlipNodeList(); ImTriangulatorNode *node = _Nodes; for (int i = _TrianglesLeft; i >= 0; i--, node = node->Next) node->Type = ImTriangulatorNodeType_Convex; _Reflexes.Size = 0; BuildReflexes(); BuildEars(); // If we still don't have ears, it means geometry is degenerated. if (_Ears.Size == 0) { // Return first triangle available, mimicking the behavior of convex fill. IM_ASSERT(_TrianglesLeft > 0); // Geometry is degenerated _Ears.Data[0] = _Nodes; _Ears.Size = 1; } } ImTriangulatorNode *ear = _Ears.Data[--_Ears.Size]; out_triangle[0] = ear->Prev->Index; out_triangle[1] = ear->Index; out_triangle[2] = ear->Next->Index; ear->Unlink(); if (ear == _Nodes) _Nodes = ear->Next; ReclassifyNode(ear->Prev); ReclassifyNode(ear->Next); _TrianglesLeft--; } void ImTriangulator::FlipNodeList() { ImTriangulatorNode *prev = _Nodes; ImTriangulatorNode *temp = _Nodes; ImTriangulatorNode *current = _Nodes->Next; prev->Next = prev; prev->Prev = prev; while (current != _Nodes) { temp = current->Next; current->Next = prev; prev->Prev = current; _Nodes->Next = current; current->Prev = _Nodes; prev = current; current = temp; } _Nodes = prev; } // A triangle is an ear is no other vertex is inside it. We can test reflexes vertices only (see reference algorithm) bool ImTriangulator::IsEar(int i0, int i1, int i2, const ImVec2 &v0, const ImVec2 &v1, const ImVec2 &v2) const { ImTriangulatorNode **p_end = _Reflexes.Data + _Reflexes.Size; for (ImTriangulatorNode **p = _Reflexes.Data; p < p_end; p++) { ImTriangulatorNode *reflex = *p; if (reflex->Index != i0 && reflex->Index != i1 && reflex->Index != i2) if (ImTriangleContainsPoint(v0, v1, v2, reflex->Pos)) return false; } return true; } void ImTriangulator::ReclassifyNode(ImTriangulatorNode *n1) { // Classify node ImTriangulatorNodeType type; const ImTriangulatorNode *n0 = n1->Prev; const ImTriangulatorNode *n2 = n1->Next; if (!ImTriangleIsClockwise(n0->Pos, n1->Pos, n2->Pos)) type = ImTriangulatorNodeType_Reflex; else if (IsEar(n0->Index, n1->Index, n2->Index, n0->Pos, n1->Pos, n2->Pos)) type = ImTriangulatorNodeType_Ear; else type = ImTriangulatorNodeType_Convex; // Update lists when a type changes if (type == n1->Type) return; if (n1->Type == ImTriangulatorNodeType_Reflex) _Reflexes.find_erase_unsorted(n1->Index); else if (n1->Type == ImTriangulatorNodeType_Ear) _Ears.find_erase_unsorted(n1->Index); if (type == ImTriangulatorNodeType_Reflex) _Reflexes.push_back(n1); else if (type == ImTriangulatorNodeType_Ear) _Ears.push_back(n1); n1->Type = type; } // Use ear-clipping algorithm to triangulate a simple polygon (no self-interaction, no holes). // (Reminder: we don't perform any coarse clipping/culling in ImDrawList layer! // It is up to caller to ensure not making costly calls that will be outside of visible area. // As concave fill is noticeably more expensive than other primitives, be mindful of this... // Caller can build AABB of points, and avoid filling if 'draw_list->_CmdHeader.ClipRect.Overlays(points_bb) == false') void ImDrawList::AddConcavePolyFilled(const ImVec2 *points, const int points_count, ImU32 col) { if (points_count < 3 || (col & IM_COL32_A_MASK) == 0) return; const ImVec2 uv = _Data->TexUvWhitePixel; ImTriangulator triangulator; unsigned int triangle[3]; if (Flags & ImDrawListFlags_AntiAliasedFill) { // Anti-aliased Fill const float AA_SIZE = _FringeScale; const ImU32 col_trans = col & ~IM_COL32_A_MASK; const int idx_count = (points_count - 2) * 3 + points_count * 6; const int vtx_count = (points_count * 2); PrimReserve(idx_count, vtx_count); // Add indexes for fill unsigned int vtx_inner_idx = _VtxCurrentIdx; unsigned int vtx_outer_idx = _VtxCurrentIdx + 1; _Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2)); triangulator.Init(points, points_count, _Data->TempBuffer.Data); while (triangulator._TrianglesLeft > 0) { triangulator.GetNextTriangle(triangle); _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (triangle[0] << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (triangle[1] << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (triangle[2] << 1)); _IdxWritePtr += 3; } // Compute normals _Data->TempBuffer.reserve_discard(points_count); ImVec2 *temp_normals = _Data->TempBuffer.Data; for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++) { const ImVec2 &p0 = points[i0]; const ImVec2 &p1 = points[i1]; float dx = p1.x - p0.x; float dy = p1.y - p0.y; IM_NORMALIZE2F_OVER_ZERO(dx, dy); temp_normals[i0].x = dy; temp_normals[i0].y = -dx; } for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++) { // Average normals const ImVec2 &n0 = temp_normals[i0]; const ImVec2 &n1 = temp_normals[i1]; float dm_x = (n0.x + n1.x) * 0.5f; float dm_y = (n0.y + n1.y) * 0.5f; IM_FIXNORMAL2F(dm_x, dm_y); dm_x *= AA_SIZE * 0.5f; dm_y *= AA_SIZE * 0.5f; // Add vertices _VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner _VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer _VtxWritePtr += 2; // Add indexes for fringes _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr += 6; } _VtxCurrentIdx += (ImDrawIdx)vtx_count; } else { // Non Anti-aliased Fill const int idx_count = (points_count - 2) * 3; const int vtx_count = points_count; PrimReserve(idx_count, vtx_count); for (int i = 0; i < vtx_count; i++) { _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; _VtxWritePtr++; } _Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2)); triangulator.Init(points, points_count, _Data->TempBuffer.Data); while (triangulator._TrianglesLeft > 0) { triangulator.GetNextTriangle(triangle); _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx + triangle[0]); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + triangle[1]); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + triangle[2]); _IdxWritePtr += 3; } _VtxCurrentIdx += (ImDrawIdx)vtx_count; } } //----------------------------------------------------------------------------- // [SECTION] ImDrawListSplitter //----------------------------------------------------------------------------- // FIXME: This may be a little confusing, trying to be a little too low-level/optimal instead of just doing vector // swap.. //----------------------------------------------------------------------------- void ImDrawListSplitter::ClearFreeMemory() { for (int i = 0; i < _Channels.Size; i++) { if (i == _Current) memset(&_Channels[i], 0, sizeof(_Channels[i])); // Current channel is a copy of CmdBuffer/IdxBuffer, don't destruct again _Channels[i]._CmdBuffer.clear(); _Channels[i]._IdxBuffer.clear(); } _Current = 0; _Count = 1; _Channels.clear(); } void ImDrawListSplitter::Split(ImDrawList *draw_list, int channels_count) { IM_UNUSED(draw_list); IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter."); int old_channels_count = _Channels.Size; if (old_channels_count < channels_count) { _Channels.reserve(channels_count); // Avoid over reserving since this is likely to stay stable _Channels.resize(channels_count); } _Count = channels_count; // Channels[] (24/32 bytes each) hold storage that we'll swap with draw_list->_CmdBuffer/_IdxBuffer // The content of Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we // don't strictly need to. When we switch to the next channel, we'll copy draw_list->_CmdBuffer/_IdxBuffer into // Channels[0] and then Channels[1] into draw_list->CmdBuffer/_IdxBuffer memset(&_Channels[0], 0, sizeof(ImDrawChannel)); for (int i = 1; i < channels_count; i++) { if (i >= old_channels_count) { IM_PLACEMENT_NEW(&_Channels[i]) ImDrawChannel(); } else { _Channels[i]._CmdBuffer.resize(0); _Channels[i]._IdxBuffer.resize(0); } } } void ImDrawListSplitter::Merge(ImDrawList *draw_list) { // Note that we never use or rely on _Channels.Size because it is merely a buffer that we never shrink back to 0 to // keep all sub-buffers ready for use. if (_Count <= 1) return; SetCurrentChannel(draw_list, 0); draw_list->_PopUnusedDrawCmd(); // Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command. int new_cmd_buffer_count = 0; int new_idx_buffer_count = 0; ImDrawCmd *last_cmd = (_Count > 0 && draw_list->CmdBuffer.Size > 0) ? &draw_list->CmdBuffer.back() : NULL; int idx_offset = last_cmd ? last_cmd->IdxOffset + last_cmd->ElemCount : 0; for (int i = 1; i < _Count; i++) { ImDrawChannel &ch = _Channels[i]; if (ch._CmdBuffer.Size > 0 && ch._CmdBuffer.back().ElemCount == 0 && ch._CmdBuffer.back().UserCallback == NULL) // Equivalent of PopUnusedDrawCmd() ch._CmdBuffer.pop_back(); if (ch._CmdBuffer.Size > 0 && last_cmd != NULL) { // Do not include ImDrawCmd_AreSequentialIdxOffset() in the compare as we rebuild IdxOffset values // ourselves. Manipulating IdxOffset (e.g. by reordering draw commands like done by // RenderDimmedBackgroundBehindWindow()) is not supported within a splitter. ImDrawCmd *next_cmd = &ch._CmdBuffer[0]; if (ImDrawCmd_HeaderCompare(last_cmd, next_cmd) == 0 && last_cmd->UserCallback == NULL && next_cmd->UserCallback == NULL) { // Merge previous channel last draw command with current channel first draw command if matching. last_cmd->ElemCount += next_cmd->ElemCount; idx_offset += next_cmd->ElemCount; ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges. } } if (ch._CmdBuffer.Size > 0) last_cmd = &ch._CmdBuffer.back(); new_cmd_buffer_count += ch._CmdBuffer.Size; new_idx_buffer_count += ch._IdxBuffer.Size; for (int cmd_n = 0; cmd_n < ch._CmdBuffer.Size; cmd_n++) { ch._CmdBuffer.Data[cmd_n].IdxOffset = idx_offset; idx_offset += ch._CmdBuffer.Data[cmd_n].ElemCount; } } draw_list->CmdBuffer.resize(draw_list->CmdBuffer.Size + new_cmd_buffer_count); draw_list->IdxBuffer.resize(draw_list->IdxBuffer.Size + new_idx_buffer_count); // Write commands and indices in order (they are fairly small structures, we don't copy vertices only indices) ImDrawCmd *cmd_write = draw_list->CmdBuffer.Data + draw_list->CmdBuffer.Size - new_cmd_buffer_count; ImDrawIdx *idx_write = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size - new_idx_buffer_count; for (int i = 1; i < _Count; i++) { ImDrawChannel &ch = _Channels[i]; if (int sz = ch._CmdBuffer.Size) { memcpy(cmd_write, ch._CmdBuffer.Data, sz * sizeof(ImDrawCmd)); cmd_write += sz; } if (int sz = ch._IdxBuffer.Size) { memcpy(idx_write, ch._IdxBuffer.Data, sz * sizeof(ImDrawIdx)); idx_write += sz; } } draw_list->_IdxWritePtr = idx_write; // Ensure there's always a non-callback draw command trailing the command-buffer if (draw_list->CmdBuffer.Size == 0 || draw_list->CmdBuffer.back().UserCallback != NULL) draw_list->AddDrawCmd(); // If current command is used with different settings we need to add a new command ImDrawCmd *curr_cmd = &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1]; if (curr_cmd->ElemCount == 0) ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TexRef, VtxOffset else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0) draw_list->AddDrawCmd(); _Count = 1; } void ImDrawListSplitter::SetCurrentChannel(ImDrawList *draw_list, int idx) { IM_ASSERT(idx >= 0 && idx < _Count); if (_Current == idx) return; // Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap() memcpy(&_Channels.Data[_Current]._CmdBuffer, &draw_list->CmdBuffer, sizeof(draw_list->CmdBuffer)); memcpy(&_Channels.Data[_Current]._IdxBuffer, &draw_list->IdxBuffer, sizeof(draw_list->IdxBuffer)); _Current = idx; memcpy(&draw_list->CmdBuffer, &_Channels.Data[idx]._CmdBuffer, sizeof(draw_list->CmdBuffer)); memcpy(&draw_list->IdxBuffer, &_Channels.Data[idx]._IdxBuffer, sizeof(draw_list->IdxBuffer)); draw_list->_IdxWritePtr = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size; // If current command is used with different settings we need to add a new command ImDrawCmd *curr_cmd = (draw_list->CmdBuffer.Size == 0) ? NULL : &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1]; if (curr_cmd == NULL) draw_list->AddDrawCmd(); else if (curr_cmd->ElemCount == 0) ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TexRef, VtxOffset else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0) draw_list->AddDrawCmd(); } //----------------------------------------------------------------------------- // [SECTION] ImDrawData //----------------------------------------------------------------------------- void ImDrawData::Clear() { Valid = false; CmdListsCount = TotalIdxCount = TotalVtxCount = 0; CmdLists.resize(0); // The ImDrawList are NOT owned by ImDrawData but e.g. by ImGuiContext, so we don't clear them. DisplayPos = DisplaySize = FramebufferScale = ImVec2(0.0f, 0.0f); OwnerViewport = NULL; Textures = NULL; } // Important: 'out_list' is generally going to be draw_data->CmdLists, but may be another temporary list // as long at it is expected that the result will be later merged into draw_data->CmdLists[]. void ImGui::AddDrawListToDrawDataEx(ImDrawData *draw_data, ImVector *out_list, ImDrawList *draw_list) { if (draw_list->CmdBuffer.Size == 0) return; if (draw_list->CmdBuffer.Size == 1 && draw_list->CmdBuffer[0].ElemCount == 0 && draw_list->CmdBuffer[0].UserCallback == NULL) return; // Draw list sanity check. Detect mismatch between PrimReserve() calls and incrementing _VtxCurrentIdx, _VtxWritePtr // etc. May trigger for you if you are using PrimXXX functions incorrectly. IM_ASSERT(draw_list->VtxBuffer.Size == 0 || draw_list->_VtxWritePtr == draw_list->VtxBuffer.Data + draw_list->VtxBuffer.Size); IM_ASSERT(draw_list->IdxBuffer.Size == 0 || draw_list->_IdxWritePtr == draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size); if (!(draw_list->Flags & ImDrawListFlags_AllowVtxOffset)) IM_ASSERT((int)draw_list->_VtxCurrentIdx == draw_list->VtxBuffer.Size); // Check that draw_list doesn't use more vertices than indexable (default ImDrawIdx = unsigned short = 2 bytes = 64K // vertices per ImDrawList = per window) If this assert triggers because you are drawing lots of stuff manually: // - First, make sure you are coarse clipping yourself and not trying to draw many things outside visible bounds. // Be mindful that the lower-level ImDrawList API doesn't filter vertices. Use the Metrics/Debugger window to // inspect draw list contents. // - If you want large meshes with more than 64K vertices, you can either: // (A) Handle the ImDrawCmd::VtxOffset value in your renderer backend, and set 'io.BackendFlags |= // ImGuiBackendFlags_RendererHasVtxOffset'. // Most example backends already support this from 1.71. Pre-1.71 backends won't. // Some graphics API such as GL ES 1/2 don't have a way to offset the starting vertex so it is not supported // for them. // (B) Or handle 32-bit indices in your renderer backend, and uncomment '#define ImDrawIdx unsigned int' line in // imconfig.h. // Most example backends already support this. For example, the OpenGL example code detect index size at // compile-time: // glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : // GL_UNSIGNED_INT, idx_buffer_offset); // Your own engine or render API may use different parameters or function calls to specify index sizes. // 2 and 4 bytes indices are generally supported by most graphics API. // - If for some reason neither of those solutions works for you, a workaround is to call BeginChild()/EndChild() // before reaching // the 64K limit to split your draw commands in multiple draw lists. if (sizeof(ImDrawIdx) == 2) IM_ASSERT(draw_list->_VtxCurrentIdx < (1 << 16) && "Too many vertices in ImDrawList using 16-bit indices. Read comment above"); // Resolve callback data pointers if (draw_list->_CallbacksDataBuf.Size > 0) for (ImDrawCmd &cmd : draw_list->CmdBuffer) if (cmd.UserCallback != NULL && cmd.UserCallbackDataOffset != -1 && cmd.UserCallbackDataSize > 0) cmd.UserCallbackData = draw_list->_CallbacksDataBuf.Data + cmd.UserCallbackDataOffset; // Add to output list + records state in ImDrawData out_list->push_back(draw_list); draw_data->CmdListsCount++; draw_data->TotalVtxCount += draw_list->VtxBuffer.Size; draw_data->TotalIdxCount += draw_list->IdxBuffer.Size; } void ImDrawData::AddDrawList(ImDrawList *draw_list) { IM_ASSERT(CmdLists.Size == CmdListsCount); draw_list->_PopUnusedDrawCmd(); ImGui::AddDrawListToDrawDataEx(this, &CmdLists, draw_list); } // For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: // this is slow and most likely a waste of resources. Always prefer indexed rendering! void ImDrawData::DeIndexAllBuffers() { ImVector new_vtx_buffer; TotalVtxCount = TotalIdxCount = 0; for (int i = 0; i < CmdListsCount; i++) { ImDrawList *cmd_list = CmdLists[i]; if (cmd_list->IdxBuffer.empty()) continue; new_vtx_buffer.resize(cmd_list->IdxBuffer.Size); for (int j = 0; j < cmd_list->IdxBuffer.Size; j++) new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]]; cmd_list->VtxBuffer.swap(new_vtx_buffer); cmd_list->IdxBuffer.resize(0); TotalVtxCount += cmd_list->VtxBuffer.Size; } } // Helper to scale the ClipRect field of each ImDrawCmd. // Use if your final output buffer is at a different scale than draw_data->DisplaySize, // or if there is a difference between your window resolution and framebuffer resolution. void ImDrawData::ScaleClipRects(const ImVec2 &fb_scale) { for (ImDrawList *draw_list : CmdLists) for (ImDrawCmd &cmd : draw_list->CmdBuffer) cmd.ClipRect = ImVec4(cmd.ClipRect.x * fb_scale.x, cmd.ClipRect.y * fb_scale.y, cmd.ClipRect.z * fb_scale.x, cmd.ClipRect.w * fb_scale.y); } //----------------------------------------------------------------------------- // [SECTION] Helpers ShadeVertsXXX functions //----------------------------------------------------------------------------- // Generic linear color gradient, write to RGB fields, leave A untouched. void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawList *draw_list, int vert_start_idx, int vert_end_idx, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1) { ImVec2 gradient_extent = gradient_p1 - gradient_p0; float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent); ImDrawVert *vert_start = draw_list->VtxBuffer.Data + vert_start_idx; ImDrawVert *vert_end = draw_list->VtxBuffer.Data + vert_end_idx; const int col0_r = (int)(col0 >> IM_COL32_R_SHIFT) & 0xFF; const int col0_g = (int)(col0 >> IM_COL32_G_SHIFT) & 0xFF; const int col0_b = (int)(col0 >> IM_COL32_B_SHIFT) & 0xFF; const int col_delta_r = ((int)(col1 >> IM_COL32_R_SHIFT) & 0xFF) - col0_r; const int col_delta_g = ((int)(col1 >> IM_COL32_G_SHIFT) & 0xFF) - col0_g; const int col_delta_b = ((int)(col1 >> IM_COL32_B_SHIFT) & 0xFF) - col0_b; for (ImDrawVert *vert = vert_start; vert < vert_end; vert++) { float d = ImDot(vert->pos - gradient_p0, gradient_extent); float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f); int r = (int)(col0_r + col_delta_r * t); int g = (int)(col0_g + col_delta_g * t); int b = (int)(col0_b + col_delta_b * t); vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK); } } // Distribute UV over (a, b) rectangle void ImGui::ShadeVertsLinearUV(ImDrawList *draw_list, int vert_start_idx, int vert_end_idx, const ImVec2 &a, const ImVec2 &b, const ImVec2 &uv_a, const ImVec2 &uv_b, bool clamp) { const ImVec2 size = b - a; const ImVec2 uv_size = uv_b - uv_a; const ImVec2 scale = ImVec2(size.x != 0.0f ? (uv_size.x / size.x) : 0.0f, size.y != 0.0f ? (uv_size.y / size.y) : 0.0f); ImDrawVert *vert_start = draw_list->VtxBuffer.Data + vert_start_idx; ImDrawVert *vert_end = draw_list->VtxBuffer.Data + vert_end_idx; if (clamp) { const ImVec2 min = ImMin(uv_a, uv_b); const ImVec2 max = ImMax(uv_a, uv_b); for (ImDrawVert *vertex = vert_start; vertex < vert_end; ++vertex) vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max); } else { for (ImDrawVert *vertex = vert_start; vertex < vert_end; ++vertex) vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale); } } void ImGui::ShadeVertsTransformPos(ImDrawList *draw_list, int vert_start_idx, int vert_end_idx, const ImVec2 &pivot_in, float cos_a, float sin_a, const ImVec2 &pivot_out) { ImDrawVert *vert_start = draw_list->VtxBuffer.Data + vert_start_idx; ImDrawVert *vert_end = draw_list->VtxBuffer.Data + vert_end_idx; for (ImDrawVert *vertex = vert_start; vertex < vert_end; ++vertex) vertex->pos = ImRotate(vertex->pos - pivot_in, cos_a, sin_a) + pivot_out; } //----------------------------------------------------------------------------- // [SECTION] ImFontConfig //----------------------------------------------------------------------------- // FIXME-NEWATLAS: Oversample specification could be more dynamic. For now, favoring automatic selection. ImFontConfig::ImFontConfig() { memset(this, 0, sizeof(*this)); FontDataOwnedByAtlas = true; OversampleH = 0; // Auto == 1 or 2 depending on size OversampleV = 0; // Auto == 1 GlyphMaxAdvanceX = FLT_MAX; RasterizerMultiply = 1.0f; RasterizerDensity = 1.0f; EllipsisChar = 0; } //----------------------------------------------------------------------------- // [SECTION] ImTextureData //----------------------------------------------------------------------------- // - ImTextureData::Create() // - ImTextureData::DestroyPixels() //----------------------------------------------------------------------------- int ImTextureDataGetFormatBytesPerPixel(ImTextureFormat format) { switch (format) { case ImTextureFormat_Alpha8: return 1; case ImTextureFormat_RGBA32: return 4; } IM_ASSERT(0); return 0; } const char *ImTextureDataGetStatusName(ImTextureStatus status) { switch (status) { case ImTextureStatus_OK: return "OK"; case ImTextureStatus_Destroyed: return "Destroyed"; case ImTextureStatus_WantCreate: return "WantCreate"; case ImTextureStatus_WantUpdates: return "WantUpdates"; case ImTextureStatus_WantDestroy: return "WantDestroy"; } return "N/A"; } const char *ImTextureDataGetFormatName(ImTextureFormat format) { switch (format) { case ImTextureFormat_Alpha8: return "Alpha8"; case ImTextureFormat_RGBA32: return "RGBA32"; } return "N/A"; } void ImTextureData::Create(ImTextureFormat format, int w, int h) { DestroyPixels(); Format = format; Width = w; Height = h; BytesPerPixel = ImTextureDataGetFormatBytesPerPixel(format); UseColors = false; Pixels = (unsigned char *)IM_ALLOC(Width * Height * BytesPerPixel); IM_ASSERT(Pixels != NULL); memset(Pixels, 0, Width * Height * BytesPerPixel); UsedRect.x = UsedRect.y = UsedRect.w = UsedRect.h = 0; UpdateRect.x = UpdateRect.y = (unsigned short)~0; UpdateRect.w = UpdateRect.h = 0; } void ImTextureData::DestroyPixels() { if (Pixels) IM_FREE(Pixels); Pixels = NULL; UseColors = false; } //----------------------------------------------------------------------------- // [SECTION] ImFontAtlas, ImFontAtlasBuilder //----------------------------------------------------------------------------- // - Default texture data encoded in ASCII // - ImFontAtlas() // - ImFontAtlas::Clear() // - ImFontAtlas::CompactCache() // - ImFontAtlas::ClearInputData() // - ImFontAtlas::ClearTexData() // - ImFontAtlas::ClearFonts() //----------------------------------------------------------------------------- // - ImFontAtlasUpdateNewFrame() // - ImFontAtlasTextureBlockConvert() // - ImFontAtlasTextureBlockPostProcess() // - ImFontAtlasTextureBlockPostProcessMultiply() // - ImFontAtlasTextureBlockFill() // - ImFontAtlasTextureBlockCopy() // - ImFontAtlasTextureBlockQueueUpload() //----------------------------------------------------------------------------- // - ImFontAtlas::GetTexDataAsAlpha8() [legacy] // - ImFontAtlas::GetTexDataAsRGBA32() [legacy] // - ImFontAtlas::Build() [legacy] //----------------------------------------------------------------------------- // - ImFontAtlas::AddFont() // - ImFontAtlas::AddFontDefault() // - ImFontAtlas::AddFontFromFileTTF() // - ImFontAtlas::AddFontFromMemoryTTF() // - ImFontAtlas::AddFontFromMemoryCompressedTTF() // - ImFontAtlas::AddFontFromMemoryCompressedBase85TTF() // - ImFontAtlas::RemoveFont() // - ImFontAtlasBuildNotifySetFont() //----------------------------------------------------------------------------- // - ImFontAtlas::AddCustomRect() // - ImFontAtlas::RemoveCustomRect() // - ImFontAtlas::GetCustomRect() // - ImFontAtlas::AddCustomRectFontGlyph() [legacy] // - ImFontAtlas::AddCustomRectFontGlyphForSize() [legacy] // - ImFontAtlasGetMouseCursorTexData() //----------------------------------------------------------------------------- // - ImFontAtlasBuildMain() // - ImFontAtlasBuildSetupFontLoader() // - ImFontAtlasBuildPreloadAllGlyphRanges() // - ImFontAtlasBuildUpdatePointers() // - ImFontAtlasBuildRenderBitmapFromString() // - ImFontAtlasBuildUpdateBasicTexData() // - ImFontAtlasBuildUpdateLinesTexData() // - ImFontAtlasBuildAddFont() // - ImFontAtlasBuildSetupFontBakedEllipsis() // - ImFontAtlasBuildSetupFontBakedBlanks() // - ImFontAtlasBuildSetupFontBakedFallback() // - ImFontAtlasBuildSetupFontSpecialGlyphs() // - ImFontAtlasBuildDiscardBakes() // - ImFontAtlasBuildDiscardFontBakedGlyph() // - ImFontAtlasBuildDiscardFontBaked() // - ImFontAtlasBuildDiscardFontBakes() //----------------------------------------------------------------------------- // - ImFontAtlasAddDrawListSharedData() // - ImFontAtlasRemoveDrawListSharedData() // - ImFontAtlasUpdateDrawListsTextures() // - ImFontAtlasUpdateDrawListsSharedData() //----------------------------------------------------------------------------- // - ImFontAtlasBuildSetTexture() // - ImFontAtlasBuildAddTexture() // - ImFontAtlasBuildMakeSpace() // - ImFontAtlasBuildRepackTexture() // - ImFontAtlasBuildGrowTexture() // - ImFontAtlasBuildRepackOrGrowTexture() // - ImFontAtlasBuildGetTextureSizeEstimate() // - ImFontAtlasBuildCompactTexture() // - ImFontAtlasBuildInit() // - ImFontAtlasBuildDestroy() //----------------------------------------------------------------------------- // - ImFontAtlasPackInit() // - ImFontAtlasPackAllocRectEntry() // - ImFontAtlasPackReuseRectEntry() // - ImFontAtlasPackDiscardRect() // - ImFontAtlasPackAddRect() // - ImFontAtlasPackGetRect() //----------------------------------------------------------------------------- // - ImFontBaked_BuildGrowIndex() // - ImFontBaked_BuildLoadGlyph() // - ImFontAtlasDebugLogTextureRequests() //----------------------------------------------------------------------------- // - ImFontAtlasGetFontLoaderForStbTruetype() //----------------------------------------------------------------------------- // A work of art lies ahead! (. = white layer, X = black layer, others are blank) // The 2x2 white texels on the top left are the ones we'll use everywhere in Dear ImGui to render filled shapes. // (This is used when io.MouseDrawCursor = true) const int FONT_ATLAS_DEFAULT_TEX_DATA_W = 122; // Actual texture will be 2 times that + 1 spacing. const int FONT_ATLAS_DEFAULT_TEX_DATA_H = 27; static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] = { "..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX- XX - " "XX XX " "..- -X.....X- X.X - X.X -X.....X - X.....X- X..X " "-X..X X..X" "--- -XXX.XXX- X...X - X...X -X....X - X....X- X..X " "-X...X X...X" "X - X.X - X.....X - X.....X -X...X - X...X- X..X - " "X...X X...X " "XX - X.X -X.......X- X.......X -X..X.X - X.X..X- X..X - " " X...X...X " "X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X- X..XXX - " " X.....X " "X..X - X.X - X.X - X.X -XX X.X - X.X XX- X..X..XXX - " " X...X " "X...X - X.X - X.X - XX X.X XX - X.X - X.X - X..X..X..XX - " " X.X " "X....X - X.X - X.X - X.X X.X X.X - X.X - X.X - X..X..X..X.X - " " X...X " "X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X -XXX X..X..X..X..X- " " X.....X " "X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X -X..XX........X..X- " " X...X...X " "X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X -X...X...........X- " "X...X X...X " "X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X - " "X..............X-X...X X...X" "X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X - " "X.............X-X..X X..X" "X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X - X.............X- " "XX XX " "X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X - " "X............X--------------" "X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX - X...........X - " " " "X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------- X..........X - " " " "X.X X..X - -X.......X- X.......X - XX XX - - X..........X - " " " "XX X..X - - X.....X - X.....X - X.X X.X - - X........X - " " " " X..X - - X...X - X...X - X..X X..X - - X........X - " " " " XX - - X.X - X.X - X...XXXXXXXXXXXXX...X - - XXXXXXXXXX - " " " "------------- - X - X -X.....................X- ------------------- " " " " ----------------------------------- X...XXXXXXXXXXXXX...X - " " " " - X..X X..X - " " " " - X.X X.X - " " " " - XX XX - " " "}; static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_COUNT][3] = { // Pos ........ Size ......... Offset ...... {ImVec2(0, 3), ImVec2(12, 19), ImVec2(0, 0)}, // ImGuiMouseCursor_Arrow {ImVec2(13, 0), ImVec2(7, 16), ImVec2(1, 8)}, // ImGuiMouseCursor_TextInput {ImVec2(31, 0), ImVec2(23, 23), ImVec2(11, 11)}, // ImGuiMouseCursor_ResizeAll {ImVec2(21, 0), ImVec2(9, 23), ImVec2(4, 11)}, // ImGuiMouseCursor_ResizeNS {ImVec2(55, 18), ImVec2(23, 9), ImVec2(11, 4)}, // ImGuiMouseCursor_ResizeEW {ImVec2(73, 0), ImVec2(17, 17), ImVec2(8, 8)}, // ImGuiMouseCursor_ResizeNESW {ImVec2(55, 0), ImVec2(17, 17), ImVec2(8, 8)}, // ImGuiMouseCursor_ResizeNWSE {ImVec2(91, 0), ImVec2(17, 22), ImVec2(5, 0)}, // ImGuiMouseCursor_Hand {ImVec2(0, 3), ImVec2(12, 19), ImVec2(0, 0)}, // ImGuiMouseCursor_Wait // Arrow + custom code in ImGui::RenderMouseCursor() {ImVec2(0, 3), ImVec2(12, 19), ImVec2(0, 0)}, // ImGuiMouseCursor_Progress // Arrow + custom code in ImGui::RenderMouseCursor() {ImVec2(109, 0), ImVec2(13, 15), ImVec2(6, 7)}, // ImGuiMouseCursor_NotAllowed }; #define IM_FONTGLYPH_INDEX_UNUSED ((ImU16) - 1) // 0xFFFF #define IM_FONTGLYPH_INDEX_NOT_FOUND ((ImU16) - 2) // 0xFFFE ImFontAtlas::ImFontAtlas() { memset(this, 0, sizeof(*this)); TexDesiredFormat = ImTextureFormat_RGBA32; TexGlyphPadding = 1; TexMinWidth = 512; TexMinHeight = 128; TexMaxWidth = 8192; TexMaxHeight = 8192; RendererHasTextures = false; // Assumed false by default, as apps can call e.g Atlas::Build() after backend init and // before ImGui can update. TexNextUniqueID = 1; FontNextUniqueID = 1; Builder = NULL; } ImFontAtlas::~ImFontAtlas() { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); RendererHasTextures = false; // Full Clear() is supported, but ClearTexData() only isn't. ClearFonts(); ClearTexData(); TexList.clear_delete(); TexData = NULL; } void ImFontAtlas::Clear() { bool backup_renderer_has_textures = RendererHasTextures; RendererHasTextures = false; // Full Clear() is supported, but ClearTexData() only isn't. ClearFonts(); ClearTexData(); RendererHasTextures = backup_renderer_has_textures; } void ImFontAtlas::CompactCache() { ImFontAtlasTextureCompact(this); } void ImFontAtlas::ClearInputData() { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); for (ImFont *font : Fonts) ImFontAtlasFontDestroyOutput(this, font); for (ImFontConfig &font_cfg : Sources) ImFontAtlasFontDestroySourceData(this, &font_cfg); for (ImFont *font : Fonts) { // When clearing this we lose access to the font name and other information used to build the font. font->Sources.clear(); font->Flags |= ImFontFlags_NoLoadGlyphs; } Sources.clear(); } // Clear CPU-side copy of the texture data. void ImFontAtlas::ClearTexData() { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); IM_ASSERT(RendererHasTextures == false && "Not supported for dynamic atlases, but you may call Clear()."); for (ImTextureData *tex : TexList) tex->DestroyPixels(); // Locked = true; // Hoped to be able to lock this down but some reload patterns may not be happy with it. } void ImFontAtlas::ClearFonts() { // FIXME-NEWATLAS: Illegal to remove currently bound font. IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); ImFontAtlasBuildDestroy(this); ClearInputData(); Fonts.clear_delete(); TexIsBuilt = false; for (ImDrawListSharedData *shared_data : DrawListSharedDatas) { shared_data->Font = NULL; shared_data->FontScale = shared_data->FontSize = 0.0f; } } static void ImFontAtlasBuildUpdateRendererHasTexturesFromContext(ImFontAtlas *atlas) { // [LEGACY] Copy back the ImGuiBackendFlags_RendererHasTextures flag from ImGui context. // - This is the 1% exceptional case where that dependency if useful, to bypass an issue where otherwise at the // time of an early call to Build(), it would be impossible for us to tell if the backend supports texture update. // - Without this hack, we would have quite a pitfall as many legacy codebases have an early call to Build(). // Whereas conversely, the portion of people using ImDrawList without ImGui is expected to be pathologically rare. for (ImDrawListSharedData *shared_data : atlas->DrawListSharedDatas) if (ImGuiContext *imgui_ctx = shared_data->Context) { atlas->RendererHasTextures = (imgui_ctx->IO.BackendFlags & ImGuiBackendFlags_RendererHasTextures) != 0; break; } } // Called by NewFrame() for atlases owned by a context. // If you manually manage font atlases, you'll need to call this yourself. // - 'frame_count' needs to be provided because we can gc/prioritize baked fonts based on their age. // - 'frame_count' may not match those of all imgui contexts using this atlas, as contexts may be updated as different // frequencies. But generally you can use ImGui::GetFrameCount() on one of your context. void ImFontAtlasUpdateNewFrame(ImFontAtlas *atlas, int frame_count, bool renderer_has_textures) { IM_ASSERT(atlas->Builder == NULL || atlas->Builder->FrameCount < frame_count); // Protection against being called twice. atlas->RendererHasTextures = renderer_has_textures; // Check that font atlas was built or backend support texture reload in which case we can build now if (atlas->RendererHasTextures) { atlas->TexIsBuilt = true; if (atlas->Builder == NULL) // This will only happen if fonts were not already loaded. ImFontAtlasBuildMain(atlas); } else // Legacy backend { IM_ASSERT_USER_ERROR( atlas->TexIsBuilt, "Backend does not support ImGuiBackendFlags_RendererHasTextures, and font atlas is not built! Update " "backend OR make sure you called ImGui_ImplXXXX_NewFrame() function for renderer backend, which should " "call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8()."); } if (atlas->TexIsBuilt && atlas->Builder->PreloadedAllGlyphsRanges) IM_ASSERT_USER_ERROR(atlas->RendererHasTextures == false, "Called ImFontAtlas::Build() before ImGuiBackendFlags_RendererHasTextures got set! With " "new backends: you don't need to call Build()."); // Clear BakedCurrent cache, this is important because it ensure the uncached path gets taken once. // We also rely on ImFontBaked* pointers never crossing frames. ImFontAtlasBuilder *builder = atlas->Builder; builder->FrameCount = frame_count; for (ImFont *font : atlas->Fonts) font->LastBaked = NULL; // Garbage collect BakedPool if (builder->BakedDiscardedCount > 0) { int dst_n = 0, src_n = 0; for (; src_n < builder->BakedPool.Size; src_n++) { ImFontBaked *p_src = &builder->BakedPool[src_n]; if (p_src->WantDestroy) continue; ImFontBaked *p_dst = &builder->BakedPool[dst_n++]; if (p_dst == p_src) continue; memcpy(p_dst, p_src, sizeof(ImFontBaked)); builder->BakedMap.SetVoidPtr(p_dst->BakedId, p_dst); } IM_ASSERT(dst_n + builder->BakedDiscardedCount == src_n); builder->BakedPool.Size -= builder->BakedDiscardedCount; builder->BakedDiscardedCount = 0; } // Update texture status for (int tex_n = 0; tex_n < atlas->TexList.Size; tex_n++) { ImTextureData *tex = atlas->TexList[tex_n]; bool remove_from_list = false; if (tex->Status == ImTextureStatus_OK) { tex->Updates.resize(0); tex->UpdateRect.x = tex->UpdateRect.y = (unsigned short)~0; tex->UpdateRect.w = tex->UpdateRect.h = 0; } if (tex->Status == ImTextureStatus_WantCreate && atlas->RendererHasTextures) IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == NULL && "Backend set texture's TexID/BackendUserData but did not update Status to OK."); if (tex->Status == ImTextureStatus_Destroyed) { IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == NULL && "Backend set texture Status to Destroyed but did not clear TexID/BackendUserData!"); if (tex->WantDestroyNextFrame) remove_from_list = true; // Destroy was scheduled by us else tex->Status = ImTextureStatus_WantCreate; // Destroy was done was backend (e.g. freed resources mid-run) } else if (tex->WantDestroyNextFrame && tex->Status != ImTextureStatus_WantDestroy) { // Request destroy. Keep bool as it allows us to keep track of things. // We don't destroy pixels right away, as backend may have an in-flight copy from RAM. IM_ASSERT(tex->Status == ImTextureStatus_OK || tex->Status == ImTextureStatus_WantCreate || tex->Status == ImTextureStatus_WantUpdates); tex->Status = ImTextureStatus_WantDestroy; } // The backend may need defer destroying by a few frames, to handle texture used by previous in-flight // rendering. We allow the texture staying in _WantDestroy state and increment a counter which the backend can // use to take its decision. if (tex->Status == ImTextureStatus_WantDestroy) tex->UnusedFrames++; // If a texture has never reached the backend, they don't need to know about it. if (tex->Status == ImTextureStatus_WantDestroy && tex->TexID == ImTextureID_Invalid && tex->BackendUserData == NULL) remove_from_list = true; // Destroy and remove if (remove_from_list) { tex->DestroyPixels(); IM_DELETE(tex); atlas->TexList.erase(atlas->TexList.begin() + tex_n); tex_n--; } } } void ImFontAtlasTextureBlockConvert(const unsigned char *src_pixels, ImTextureFormat src_fmt, int src_pitch, unsigned char *dst_pixels, ImTextureFormat dst_fmt, int dst_pitch, int w, int h) { IM_ASSERT(src_pixels != NULL && dst_pixels != NULL); if (src_fmt == dst_fmt) { int line_sz = w * ImTextureDataGetFormatBytesPerPixel(src_fmt); for (int ny = h; ny > 0; ny--, src_pixels += src_pitch, dst_pixels += dst_pitch) memcpy(dst_pixels, src_pixels, line_sz); } else if (src_fmt == ImTextureFormat_Alpha8 && dst_fmt == ImTextureFormat_RGBA32) { for (int ny = h; ny > 0; ny--, src_pixels += src_pitch, dst_pixels += dst_pitch) { const ImU8 *src_p = (const ImU8 *)src_pixels; ImU32 *dst_p = (ImU32 *)(void *)dst_pixels; for (int nx = w; nx > 0; nx--) *dst_p++ = IM_COL32(255, 255, 255, (unsigned int)(*src_p++)); } } else if (src_fmt == ImTextureFormat_RGBA32 && dst_fmt == ImTextureFormat_Alpha8) { for (int ny = h; ny > 0; ny--, src_pixels += src_pitch, dst_pixels += dst_pitch) { const ImU32 *src_p = (const ImU32 *)(void *)src_pixels; ImU8 *dst_p = (ImU8 *)dst_pixels; for (int nx = w; nx > 0; nx--) *dst_p++ = ((*src_p++) >> IM_COL32_A_SHIFT) & 0xFF; } } else { IM_ASSERT(0); } } // Source buffer may be written to (used for in-place mods). // Post-process hooks may eventually be added here. void ImFontAtlasTextureBlockPostProcess(ImFontAtlasPostProcessData *data) { // Multiply operator (legacy) if (data->FontSrc->RasterizerMultiply != 1.0f) ImFontAtlasTextureBlockPostProcessMultiply(data, data->FontSrc->RasterizerMultiply); } void ImFontAtlasTextureBlockPostProcessMultiply(ImFontAtlasPostProcessData *data, float multiply_factor) { unsigned char *pixels = data->Pixels; int pitch = data->Pitch; if (data->Format == ImTextureFormat_Alpha8) { for (int ny = data->Height; ny > 0; ny--, pixels += pitch) { ImU8 *p = (ImU8 *)pixels; for (int nx = data->Width; nx > 0; nx--, p++) { unsigned int v = ImMin((unsigned int)(*p * multiply_factor), (unsigned int)255); *p = (unsigned char)v; } } } else if (data->Format == ImTextureFormat_RGBA32) //-V547 { for (int ny = data->Height; ny > 0; ny--, pixels += pitch) { ImU32 *p = (ImU32 *)(void *)pixels; for (int nx = data->Width; nx > 0; nx--, p++) { unsigned int a = ImMin((unsigned int)(((*p >> IM_COL32_A_SHIFT) & 0xFF) * multiply_factor), (unsigned int)255); *p = IM_COL32((*p >> IM_COL32_R_SHIFT) & 0xFF, (*p >> IM_COL32_G_SHIFT) & 0xFF, (*p >> IM_COL32_B_SHIFT) & 0xFF, a); } } } else { IM_ASSERT(0); } } // Fill with single color. We don't use this directly but it is convenient for anyone working on uploading custom rects. void ImFontAtlasTextureBlockFill(ImTextureData *dst_tex, int dst_x, int dst_y, int w, int h, ImU32 col) { if (dst_tex->Format == ImTextureFormat_Alpha8) { ImU8 col_a = (col >> IM_COL32_A_SHIFT) & 0xFF; for (int y = 0; y < h; y++) memset((ImU8 *)dst_tex->GetPixelsAt(dst_x, dst_y + y), col_a, w); } else { for (int y = 0; y < h; y++) { ImU32 *p = (ImU32 *)(void *)dst_tex->GetPixelsAt(dst_x, dst_y + y); for (int x = w; x > 0; x--, p++) *p = col; } } } // Copy block from one texture to another void ImFontAtlasTextureBlockCopy(ImTextureData *src_tex, int src_x, int src_y, ImTextureData *dst_tex, int dst_x, int dst_y, int w, int h) { IM_ASSERT(src_tex->Pixels != NULL && dst_tex->Pixels != NULL); IM_ASSERT(src_tex->Format == dst_tex->Format); IM_ASSERT(src_x >= 0 && src_x + w <= src_tex->Width); IM_ASSERT(src_y >= 0 && src_y + h <= src_tex->Height); IM_ASSERT(dst_x >= 0 && dst_x + w <= dst_tex->Width); IM_ASSERT(dst_y >= 0 && dst_y + h <= dst_tex->Height); for (int y = 0; y < h; y++) memcpy(dst_tex->GetPixelsAt(dst_x, dst_y + y), src_tex->GetPixelsAt(src_x, src_y + y), w * dst_tex->BytesPerPixel); } // Queue texture block update for renderer backend void ImFontAtlasTextureBlockQueueUpload(ImFontAtlas *atlas, ImTextureData *tex, int x, int y, int w, int h) { IM_ASSERT(tex->Status != ImTextureStatus_WantDestroy && tex->Status != ImTextureStatus_Destroyed); IM_ASSERT(x >= 0 && x <= 0xFFFF && y >= 0 && y <= 0xFFFF && w >= 0 && x + w <= 0x10000 && h >= 0 && y + h <= 0x10000); IM_UNUSED(atlas); ImTextureRect req = {(unsigned short)x, (unsigned short)y, (unsigned short)w, (unsigned short)h}; int new_x1 = ImMax(tex->UpdateRect.w == 0 ? 0 : tex->UpdateRect.x + tex->UpdateRect.w, req.x + req.w); int new_y1 = ImMax(tex->UpdateRect.h == 0 ? 0 : tex->UpdateRect.y + tex->UpdateRect.h, req.y + req.h); tex->UpdateRect.x = ImMin(tex->UpdateRect.x, req.x); tex->UpdateRect.y = ImMin(tex->UpdateRect.y, req.y); tex->UpdateRect.w = (unsigned short)(new_x1 - tex->UpdateRect.x); tex->UpdateRect.h = (unsigned short)(new_y1 - tex->UpdateRect.y); tex->UsedRect.x = ImMin(tex->UsedRect.x, req.x); tex->UsedRect.y = ImMin(tex->UsedRect.y, req.y); tex->UsedRect.w = (unsigned short)(ImMax(tex->UsedRect.x + tex->UsedRect.w, req.x + req.w) - tex->UsedRect.x); tex->UsedRect.h = (unsigned short)(ImMax(tex->UsedRect.y + tex->UsedRect.h, req.y + req.h) - tex->UsedRect.y); atlas->TexIsBuilt = false; // No need to queue if status is _WantCreate if (tex->Status == ImTextureStatus_OK || tex->Status == ImTextureStatus_WantUpdates) { tex->Status = ImTextureStatus_WantUpdates; tex->Updates.push_back(req); } } #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS static void GetTexDataAsFormat(ImFontAtlas *atlas, ImTextureFormat format, unsigned char **out_pixels, int *out_width, int *out_height, int *out_bytes_per_pixel) { ImTextureData *tex = atlas->TexData; if (!atlas->TexIsBuilt || tex == NULL || tex->Pixels == NULL || atlas->TexDesiredFormat != format) { atlas->TexDesiredFormat = format; atlas->Build(); tex = atlas->TexData; } if (out_pixels) { *out_pixels = (unsigned char *)tex->Pixels; }; if (out_width) { *out_width = tex->Width; }; if (out_height) { *out_height = tex->Height; }; if (out_bytes_per_pixel) { *out_bytes_per_pixel = tex->BytesPerPixel; } } void ImFontAtlas::GetTexDataAsAlpha8(unsigned char **out_pixels, int *out_width, int *out_height, int *out_bytes_per_pixel) { GetTexDataAsFormat(this, ImTextureFormat_Alpha8, out_pixels, out_width, out_height, out_bytes_per_pixel); } void ImFontAtlas::GetTexDataAsRGBA32(unsigned char **out_pixels, int *out_width, int *out_height, int *out_bytes_per_pixel) { GetTexDataAsFormat(this, ImTextureFormat_RGBA32, out_pixels, out_width, out_height, out_bytes_per_pixel); } bool ImFontAtlas::Build() { ImFontAtlasBuildMain(this); return true; } #endif // #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS ImFont *ImFontAtlas::AddFont(const ImFontConfig *font_cfg_in) { // Sanity Checks IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); IM_ASSERT((font_cfg_in->FontData != NULL && font_cfg_in->FontDataSize > 0) || (font_cfg_in->FontLoader != NULL)); // IM_ASSERT(font_cfg_in->SizePixels > 0.0f && "Is ImFontConfig struct correctly initialized?"); IM_ASSERT(font_cfg_in->RasterizerDensity > 0.0f && "Is ImFontConfig struct correctly initialized?"); if (font_cfg_in->GlyphOffset.x != 0.0f || font_cfg_in->GlyphOffset.y != 0.0f || font_cfg_in->GlyphMinAdvanceX != 0.0f || font_cfg_in->GlyphMaxAdvanceX != FLT_MAX) IM_ASSERT(font_cfg_in->SizePixels != 0.0f && "Specifying glyph offset/advances requires a reference size to base it on."); // Lazily create builder on the first call to AddFont if (Builder == NULL) ImFontAtlasBuildInit(this); // Create new font ImFont *font; if (!font_cfg_in->MergeMode) { font = IM_NEW(ImFont)(); font->FontId = FontNextUniqueID++; font->Flags = font_cfg_in->Flags; font->LegacySize = font_cfg_in->SizePixels; font->CurrentRasterizerDensity = font_cfg_in->RasterizerDensity; Fonts.push_back(font); } else { IM_ASSERT(Fonts.Size > 0 && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already // been added before. You can use // ImGui::GetIO().Fonts->AddFontDefault() to add the // default imgui font. font = Fonts.back(); } // Add to list Sources.push_back(*font_cfg_in); ImFontConfig *font_cfg = &Sources.back(); if (font_cfg->DstFont == NULL) font_cfg->DstFont = font; font->Sources.push_back(font_cfg); ImFontAtlasBuildUpdatePointers( this); // Pointers to Sources are otherwise dangling after we called Sources.push_back(). if (font_cfg->FontDataOwnedByAtlas == false) { font_cfg->FontDataOwnedByAtlas = true; font_cfg->FontData = ImMemdup(font_cfg->FontData, (size_t)font_cfg->FontDataSize); } // Sanity check // We don't round cfg.SizePixels yet as relative size of merged fonts are used afterwards. if (font_cfg->GlyphExcludeRanges != NULL) { int size = 0; for (const ImWchar *p = font_cfg->GlyphExcludeRanges; p[0] != 0; p++, size++) { } IM_ASSERT((size & 1) == 0 && "GlyphExcludeRanges[] size must be multiple of two!"); IM_ASSERT((size <= 64) && "GlyphExcludeRanges[] size must be small!"); font_cfg->GlyphExcludeRanges = (ImWchar *)ImMemdup(font_cfg->GlyphExcludeRanges, sizeof(font_cfg->GlyphExcludeRanges[0]) * (size + 1)); } if (font_cfg->FontLoader != NULL) { IM_ASSERT(font_cfg->FontLoader->FontBakedLoadGlyph != NULL); IM_ASSERT(font_cfg->FontLoader->LoaderInit == NULL && font_cfg->FontLoader->LoaderShutdown == NULL); // FIXME-NEWATLAS: Unsupported yet. } IM_ASSERT(font_cfg->FontLoaderData == NULL); if (!ImFontAtlasFontSourceInit(this, font_cfg)) { // Rollback (this is a fragile/rarely exercised code-path. TestSuite's "misc_atlas_add_invalid_font" aim to test // this) ImFontAtlasFontDestroySourceData(this, font_cfg); Sources.pop_back(); font->Sources.pop_back(); if (!font_cfg->MergeMode) { IM_DELETE(font); Fonts.pop_back(); } return NULL; } ImFontAtlasFontSourceAddToFont(this, font, font_cfg); return font; } // Default font TTF is compressed with stb_compress then base85 encoded (see misc/fonts/binary_to_compressed_c.cpp for // encoder) static unsigned int stb_decompress_length(const unsigned char *input); static unsigned int stb_decompress(unsigned char *output, const unsigned char *input, unsigned int length); static unsigned int Decode85Byte(char c) { return c >= '\\' ? c - 36 : c - 35; } static void Decode85(const unsigned char *src, unsigned char *dst) { while (*src) { unsigned int tmp = Decode85Byte(src[0]) + 85 * (Decode85Byte(src[1]) + 85 * (Decode85Byte(src[2]) + 85 * (Decode85Byte(src[3]) + 85 * Decode85Byte(src[4])))); dst[0] = ((tmp >> 0) & 0xFF); dst[1] = ((tmp >> 8) & 0xFF); dst[2] = ((tmp >> 16) & 0xFF); dst[3] = ((tmp >> 24) & 0xFF); // We can't assume little-endianness. src += 5; dst += 4; } } #ifndef IMGUI_DISABLE_DEFAULT_FONT static const char *GetDefaultCompressedFontDataTTF(int *out_size); #endif // Load embedded ProggyClean.ttf at size 13, disable oversampling ImFont *ImFontAtlas::AddFontDefault(const ImFontConfig *font_cfg_template) { #ifndef IMGUI_DISABLE_DEFAULT_FONT ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig(); if (!font_cfg_template) { font_cfg.OversampleH = font_cfg.OversampleV = 1; font_cfg.PixelSnapH = true; } if (font_cfg.SizePixels <= 0.0f) font_cfg.SizePixels = 13.0f * 1.0f; if (font_cfg.Name[0] == '\0') ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "ProggyClean.ttf"); font_cfg.EllipsisChar = (ImWchar)0x0085; font_cfg.GlyphOffset.y = 1.0f * IM_TRUNC(font_cfg.SizePixels / 13.0f); // Add +1 offset per 13 units int ttf_compressed_size = 0; const char *ttf_compressed = GetDefaultCompressedFontDataTTF(&ttf_compressed_size); const ImWchar *glyph_ranges = font_cfg.GlyphRanges != NULL ? font_cfg.GlyphRanges : GetGlyphRangesDefault(); ImFont *font = AddFontFromMemoryCompressedTTF(ttf_compressed, ttf_compressed_size, font_cfg.SizePixels, &font_cfg, glyph_ranges); return font; #else IM_ASSERT(0 && "AddFontDefault() disabled in this build."); IM_UNUSED(font_cfg_template); return NULL; #endif // #ifndef IMGUI_DISABLE_DEFAULT_FONT } ImFont *ImFontAtlas::AddFontFromFileTTF(const char *filename, float size_pixels, const ImFontConfig *font_cfg_template, const ImWchar *glyph_ranges) { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); size_t data_size = 0; void *data = ImFileLoadToMemory(filename, "rb", &data_size, 0); if (!data) { if (font_cfg_template == NULL || (font_cfg_template->Flags & ImFontFlags_NoLoadError) == 0) { IMGUI_DEBUG_LOG("While loading '%s'\n", filename); IM_ASSERT_USER_ERROR(0, "Could not load font file!"); } return NULL; } ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig(); if (font_cfg.Name[0] == '\0') { // Store a short copy of filename into into the font name for convenience const char *p; for (p = filename + ImStrlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--) { } ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s", p); } return AddFontFromMemoryTTF(data, (int)data_size, size_pixels, &font_cfg, glyph_ranges); } // NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned // TTF buffer will be deleted after Build(). ImFont *ImFontAtlas::AddFontFromMemoryTTF(void *font_data, int font_data_size, float size_pixels, const ImFontConfig *font_cfg_template, const ImWchar *glyph_ranges) { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig(); IM_ASSERT(font_cfg.FontData == NULL); IM_ASSERT(font_data_size > 100 && "Incorrect value for font_data_size!"); // Heuristic to prevent accidentally passing a wrong value to // font_data_size. font_cfg.FontData = font_data; font_cfg.FontDataSize = font_data_size; font_cfg.SizePixels = size_pixels > 0.0f ? size_pixels : font_cfg.SizePixels; if (glyph_ranges) font_cfg.GlyphRanges = glyph_ranges; return AddFont(&font_cfg); } ImFont *ImFontAtlas::AddFontFromMemoryCompressedTTF(const void *compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig *font_cfg_template, const ImWchar *glyph_ranges) { const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char *)compressed_ttf_data); unsigned char *buf_decompressed_data = (unsigned char *)IM_ALLOC(buf_decompressed_size); stb_decompress(buf_decompressed_data, (const unsigned char *)compressed_ttf_data, (unsigned int)compressed_ttf_size); ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig(); IM_ASSERT(font_cfg.FontData == NULL); font_cfg.FontDataOwnedByAtlas = true; return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges); } ImFont *ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char *compressed_ttf_data_base85, float size_pixels, const ImFontConfig *font_cfg, const ImWchar *glyph_ranges) { int compressed_ttf_size = (((int)ImStrlen(compressed_ttf_data_base85) + 4) / 5) * 4; void *compressed_ttf = IM_ALLOC((size_t)compressed_ttf_size); Decode85((const unsigned char *)compressed_ttf_data_base85, (unsigned char *)compressed_ttf); ImFont *font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges); IM_FREE(compressed_ttf); return font; } // On font removal we need to remove references (otherwise we could queue removal?) // We allow old_font == new_font which forces updating all values (e.g. sizes) static void ImFontAtlasBuildNotifySetFont(ImFontAtlas *atlas, ImFont *old_font, ImFont *new_font) { for (ImDrawListSharedData *shared_data : atlas->DrawListSharedDatas) { if (shared_data->Font == old_font) shared_data->Font = new_font; if (ImGuiContext *ctx = shared_data->Context) { if (ctx->IO.FontDefault == old_font) ctx->IO.FontDefault = new_font; if (ctx->Font == old_font) { ImGuiContext *curr_ctx = ImGui::GetCurrentContext(); bool need_bind_ctx = ctx != curr_ctx; if (need_bind_ctx) ImGui::SetCurrentContext(ctx); ImGui::SetCurrentFont(new_font, ctx->FontSizeBase, ctx->FontSize); if (need_bind_ctx) ImGui::SetCurrentContext(curr_ctx); } for (ImFontStackData &font_stack_data : ctx->FontStack) if (font_stack_data.Font == old_font) font_stack_data.Font = new_font; } } } void ImFontAtlas::RemoveFont(ImFont *font) { IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas!"); font->ClearOutputData(); ImFontAtlasFontDestroyOutput(this, font); for (ImFontConfig *src : font->Sources) ImFontAtlasFontDestroySourceData(this, src); for (int src_n = 0; src_n < Sources.Size; src_n++) if (Sources[src_n].DstFont == font) Sources.erase(&Sources[src_n--]); bool removed = Fonts.find_erase(font); IM_ASSERT(removed); IM_UNUSED(removed); ImFontAtlasBuildUpdatePointers(this); font->ContainerAtlas = NULL; IM_DELETE(font); // Notify external systems ImFont *new_current_font = Fonts.empty() ? NULL : Fonts[0]; ImFontAtlasBuildNotifySetFont(this, font, new_current_font); } // At it is common to do an AddCustomRect() followed by a GetCustomRect(), we provide an optional 'ImFontAtlasRect* // out_r = NULL' argument to retrieve the info straight away. ImFontAtlasRectId ImFontAtlas::AddCustomRect(int width, int height, ImFontAtlasRect *out_r) { IM_ASSERT(width > 0 && width <= 0xFFFF); IM_ASSERT(height > 0 && height <= 0xFFFF); if (Builder == NULL) ImFontAtlasBuildInit(this); ImFontAtlasRectId r_id = ImFontAtlasPackAddRect(this, width, height); if (r_id == ImFontAtlasRectId_Invalid) return ImFontAtlasRectId_Invalid; if (out_r != NULL) GetCustomRect(r_id, out_r); if (RendererHasTextures) { ImTextureRect *r = ImFontAtlasPackGetRect(this, r_id); ImFontAtlasTextureBlockQueueUpload(this, TexData, r->x, r->y, r->w, r->h); } return r_id; } void ImFontAtlas::RemoveCustomRect(ImFontAtlasRectId id) { if (ImFontAtlasPackGetRectSafe(this, id) == NULL) return; ImFontAtlasPackDiscardRect(this, id); } #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS // This API does not make sense anymore with scalable fonts. // - Prefer adding a font source (ImFontConfig) using a custom/procedural loader. // - You may use ImFontFlags_LockBakedSizes to limit an existing font to known baked sizes: // ImFont* myfont = io.Fonts->AddFontFromFileTTF(....); // myfont->GetFontBaked(16.0f); // myfont->Flags |= ImFontFlags_LockBakedSizes; ImFontAtlasRectId ImFontAtlas::AddCustomRectFontGlyph(ImFont *font, ImWchar codepoint, int width, int height, float advance_x, const ImVec2 &offset) { float font_size = font->LegacySize; return AddCustomRectFontGlyphForSize(font, font_size, codepoint, width, height, advance_x, offset); } // FIXME: we automatically set glyph.Colored=true by default. // If you need to alter this, you can write 'font->Glyphs.back()->Colored' after calling AddCustomRectFontGlyph(). ImFontAtlasRectId ImFontAtlas::AddCustomRectFontGlyphForSize(ImFont *font, float font_size, ImWchar codepoint, int width, int height, float advance_x, const ImVec2 &offset) { #ifdef IMGUI_USE_WCHAR32 IM_ASSERT(codepoint <= IM_UNICODE_CODEPOINT_MAX); #endif IM_ASSERT(font != NULL); IM_ASSERT(width > 0 && width <= 0xFFFF); IM_ASSERT(height > 0 && height <= 0xFFFF); ImFontBaked *baked = font->GetFontBaked(font_size); ImFontAtlasRectId r_id = ImFontAtlasPackAddRect(this, width, height); if (r_id == ImFontAtlasRectId_Invalid) return ImFontAtlasRectId_Invalid; ImTextureRect *r = ImFontAtlasPackGetRect(this, r_id); if (RendererHasTextures) ImFontAtlasTextureBlockQueueUpload(this, TexData, r->x, r->y, r->w, r->h); if (baked->IsGlyphLoaded(codepoint)) ImFontAtlasBakedDiscardFontGlyph(this, font, baked, baked->FindGlyph(codepoint)); ImFontGlyph glyph; glyph.Codepoint = codepoint; glyph.AdvanceX = advance_x; glyph.X0 = offset.x; glyph.Y0 = offset.y; glyph.X1 = offset.x + r->w; glyph.Y1 = offset.y + r->h; glyph.Visible = true; glyph.Colored = true; // FIXME: Arbitrary glyph.PackId = r_id; ImFontAtlasBakedAddFontGlyph(this, baked, font->Sources[0], &glyph); return r_id; } #endif // #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS bool ImFontAtlas::GetCustomRect(ImFontAtlasRectId id, ImFontAtlasRect *out_r) const { ImTextureRect *r = ImFontAtlasPackGetRectSafe((ImFontAtlas *)this, id); if (r == NULL) return false; IM_ASSERT(TexData->Width > 0 && TexData->Height > 0); // Font atlas needs to be built before we can calculate UV coordinates if (out_r == NULL) return true; out_r->x = r->x; out_r->y = r->y; out_r->w = r->w; out_r->h = r->h; out_r->uv0 = ImVec2((float)(r->x), (float)(r->y)) * TexUvScale; out_r->uv1 = ImVec2((float)(r->x + r->w), (float)(r->y + r->h)) * TexUvScale; return true; } bool ImFontAtlasGetMouseCursorTexData(ImFontAtlas *atlas, ImGuiMouseCursor cursor_type, ImVec2 *out_offset, ImVec2 *out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2]) { if (cursor_type <= ImGuiMouseCursor_None || cursor_type >= ImGuiMouseCursor_COUNT) return false; if (atlas->Flags & ImFontAtlasFlags_NoMouseCursors) return false; ImTextureRect *r = ImFontAtlasPackGetRect(atlas, atlas->Builder->PackIdMouseCursors); ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][0] + ImVec2((float)r->x, (float)r->y); ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][1]; *out_size = size; *out_offset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][2]; out_uv_border[0] = (pos)*atlas->TexUvScale; out_uv_border[1] = (pos + size) * atlas->TexUvScale; pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W + 1; out_uv_fill[0] = (pos)*atlas->TexUvScale; out_uv_fill[1] = (pos + size) * atlas->TexUvScale; return true; } // When atlas->RendererHasTextures = true, this is only called if no font were loaded. void ImFontAtlasBuildMain(ImFontAtlas *atlas) { IM_ASSERT(!atlas->Locked && "Cannot modify a locked ImFontAtlas!"); if (atlas->TexData && atlas->TexData->Format != atlas->TexDesiredFormat) { ImVec2i new_tex_size = ImFontAtlasTextureGetSizeEstimate(atlas); ImFontAtlasBuildDestroy(atlas); ImFontAtlasTextureAdd(atlas, new_tex_size.x, new_tex_size.y); } if (atlas->Builder == NULL) ImFontAtlasBuildInit(atlas); // Default font is none are specified if (atlas->Sources.Size == 0) atlas->AddFontDefault(); // [LEGACY] For backends not supporting RendererHasTextures: preload all glyphs ImFontAtlasBuildUpdateRendererHasTexturesFromContext(atlas); if (atlas->RendererHasTextures == false) // ~ImGuiBackendFlags_RendererHasTextures ImFontAtlasBuildLegacyPreloadAllGlyphRanges(atlas); atlas->TexIsBuilt = true; } void ImFontAtlasBuildGetOversampleFactors(ImFontConfig *src, ImFontBaked *baked, int *out_oversample_h, int *out_oversample_v) { // Automatically disable horizontal oversampling over size 36 const float raster_size = baked->Size * baked->RasterizerDensity * src->RasterizerDensity; *out_oversample_h = (src->OversampleH != 0) ? src->OversampleH : (raster_size > 36.0f || src->PixelSnapH) ? 1 : 2; *out_oversample_v = (src->OversampleV != 0) ? src->OversampleV : 1; } // Setup main font loader for the atlas // Every font source (ImFontConfig) will use this unless ImFontConfig::FontLoader specify a custom loader. void ImFontAtlasBuildSetupFontLoader(ImFontAtlas *atlas, const ImFontLoader *font_loader) { if (atlas->FontLoader == font_loader) return; IM_ASSERT(!atlas->Locked && "Cannot modify a locked ImFontAtlas!"); for (ImFont *font : atlas->Fonts) ImFontAtlasFontDestroyOutput(atlas, font); if (atlas->Builder && atlas->FontLoader && atlas->FontLoader->LoaderShutdown) atlas->FontLoader->LoaderShutdown(atlas); atlas->FontLoader = font_loader; atlas->FontLoaderName = font_loader ? font_loader->Name : "NULL"; IM_ASSERT(atlas->FontLoaderData == NULL); if (atlas->Builder && atlas->FontLoader && atlas->FontLoader->LoaderInit) atlas->FontLoader->LoaderInit(atlas); for (ImFont *font : atlas->Fonts) ImFontAtlasFontInitOutput(atlas, font); } // Preload all glyph ranges for legacy backends. // This may lead to multiple texture creation which might be a little slower than before. void ImFontAtlasBuildLegacyPreloadAllGlyphRanges(ImFontAtlas *atlas) { atlas->Builder->PreloadedAllGlyphsRanges = true; for (ImFont *font : atlas->Fonts) { ImFontBaked *baked = font->GetFontBaked(font->LegacySize); if (font->FallbackChar != 0) baked->FindGlyph(font->FallbackChar); if (font->EllipsisChar != 0) baked->FindGlyph(font->EllipsisChar); for (ImFontConfig *src : font->Sources) { const ImWchar *ranges = src->GlyphRanges ? src->GlyphRanges : atlas->GetGlyphRangesDefault(); for (; ranges[0]; ranges += 2) for (unsigned int c = ranges[0]; c <= ranges[1] && c <= IM_UNICODE_CODEPOINT_MAX; c++) //-V560 baked->FindGlyph((ImWchar)c); } } } // FIXME: May make ImFont::Sources a ImSpan<> and move ownership to ImFontAtlas void ImFontAtlasBuildUpdatePointers(ImFontAtlas *atlas) { for (ImFont *font : atlas->Fonts) font->Sources.resize(0); for (ImFontConfig &src : atlas->Sources) src.DstFont->Sources.push_back(&src); } // Render a white-colored bitmap encoded in a string void ImFontAtlasBuildRenderBitmapFromString(ImFontAtlas *atlas, int x, int y, int w, int h, const char *in_str, char in_marker_char) { ImTextureData *tex = atlas->TexData; IM_ASSERT(x >= 0 && x + w <= tex->Width); IM_ASSERT(y >= 0 && y + h <= tex->Height); switch (tex->Format) { case ImTextureFormat_Alpha8: { ImU8 *out_p = tex->GetPixelsAt(x, y); for (int off_y = 0; off_y < h; off_y++, out_p += tex->Width, in_str += w) for (int off_x = 0; off_x < w; off_x++) out_p[off_x] = (in_str[off_x] == in_marker_char) ? 0xFF : 0x00; break; } case ImTextureFormat_RGBA32: { ImU32 *out_p = (ImU32 *)(void *)tex->GetPixelsAt(x, y); for (int off_y = 0; off_y < h; off_y++, out_p += tex->Width, in_str += w) for (int off_x = 0; off_x < w; off_x++) out_p[off_x] = (in_str[off_x] == in_marker_char) ? IM_COL32_WHITE : IM_COL32_BLACK_TRANS; break; } } } static void ImFontAtlasBuildUpdateBasicTexData(ImFontAtlas *atlas) { // Pack and store identifier so we can refresh UV coordinates on texture resize. // FIXME-NEWATLAS: User/custom rects where user code wants to store UV coordinates will need to do the same thing. ImFontAtlasBuilder *builder = atlas->Builder; ImVec2i pack_size = (atlas->Flags & ImFontAtlasFlags_NoMouseCursors) ? ImVec2i(2, 2) : ImVec2i(FONT_ATLAS_DEFAULT_TEX_DATA_W * 2 + 1, FONT_ATLAS_DEFAULT_TEX_DATA_H); ImFontAtlasRect r; bool add_and_draw = (atlas->GetCustomRect(builder->PackIdMouseCursors, &r) == false); if (add_and_draw) { builder->PackIdMouseCursors = atlas->AddCustomRect(pack_size.x, pack_size.y, &r); IM_ASSERT(builder->PackIdMouseCursors != ImFontAtlasRectId_Invalid); // Draw to texture if (atlas->Flags & ImFontAtlasFlags_NoMouseCursors) { // 2x2 white pixels ImFontAtlasBuildRenderBitmapFromString(atlas, r.x, r.y, 2, 2, "XX" "XX", 'X'); } else { // 2x2 white pixels + mouse cursors const int x_for_white = r.x; const int x_for_black = r.x + FONT_ATLAS_DEFAULT_TEX_DATA_W + 1; ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_white, r.y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.'); ImFontAtlasBuildRenderBitmapFromString(atlas, x_for_black, r.y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X'); } } // Refresh UV coordinates atlas->TexUvWhitePixel = ImVec2((r.x + 0.5f) * atlas->TexUvScale.x, (r.y + 0.5f) * atlas->TexUvScale.y); } static void ImFontAtlasBuildUpdateLinesTexData(ImFontAtlas *atlas) { if (atlas->Flags & ImFontAtlasFlags_NoBakedLines) return; // Pack and store identifier so we can refresh UV coordinates on texture resize. ImTextureData *tex = atlas->TexData; ImFontAtlasBuilder *builder = atlas->Builder; ImFontAtlasRect r; bool add_and_draw = atlas->GetCustomRect(builder->PackIdLinesTexData, &r) == false; if (add_and_draw) { ImVec2i pack_size = ImVec2i(IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 2, IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1); builder->PackIdLinesTexData = atlas->AddCustomRect(pack_size.x, pack_size.y, &r); IM_ASSERT(builder->PackIdLinesTexData != ImFontAtlasRectId_Invalid); } // Register texture region for thick lines // The +2 here is to give space for the end caps, whilst height +1 is to accommodate the fact we have a zero-width // row This generates a triangular shape in the texture, with the various line widths stacked on top of each other // to allow interpolation between them for (int n = 0; n < IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1; n++) // +1 because of the zero-width row { // Each line consists of at least two empty pixels at the ends, with a line of solid pixels in the middle const int y = n; const int line_width = n; const int pad_left = (r.w - line_width) / 2; const int pad_right = r.w - (pad_left + line_width); IM_ASSERT(pad_left + line_width + pad_right == r.w && y < r.h); // Make sure we're inside the texture bounds before we start writing pixels // Write each slice if (add_and_draw && tex->Format == ImTextureFormat_Alpha8) { ImU8 *write_ptr = (ImU8 *)tex->GetPixelsAt(r.x, r.y + y); for (int i = 0; i < pad_left; i++) *(write_ptr + i) = 0x00; for (int i = 0; i < line_width; i++) *(write_ptr + pad_left + i) = 0xFF; for (int i = 0; i < pad_right; i++) *(write_ptr + pad_left + line_width + i) = 0x00; } else if (add_and_draw && tex->Format == ImTextureFormat_RGBA32) { ImU32 *write_ptr = (ImU32 *)(void *)tex->GetPixelsAt(r.x, r.y + y); for (int i = 0; i < pad_left; i++) *(write_ptr + i) = IM_COL32(255, 255, 255, 0); for (int i = 0; i < line_width; i++) *(write_ptr + pad_left + i) = IM_COL32_WHITE; for (int i = 0; i < pad_right; i++) *(write_ptr + pad_left + line_width + i) = IM_COL32(255, 255, 255, 0); } // Refresh UV coordinates ImVec2 uv0 = ImVec2((float)(r.x + pad_left - 1), (float)(r.y + y)) * atlas->TexUvScale; ImVec2 uv1 = ImVec2((float)(r.x + pad_left + line_width + 1), (float)(r.y + y + 1)) * atlas->TexUvScale; float half_v = (uv0.y + uv1.y) * 0.5f; // Calculate a constant V in the middle of the row to avoid sampling artifacts atlas->TexUvLines[n] = ImVec4(uv0.x, half_v, uv1.x, half_v); } } //----------------------------------------------------------------------------------------------------------------------------- // Was tempted to lazily init FontSrc but wouldn't save much + makes it more complicated to detect invalid data at // AddFont() bool ImFontAtlasFontInitOutput(ImFontAtlas *atlas, ImFont *font) { bool ret = true; for (ImFontConfig *src : font->Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader && loader->FontSrcInit != NULL && !loader->FontSrcInit(atlas, src)) ret = false; } IM_ASSERT( ret); // Unclear how to react to this meaningfully. Assume that result will be same as initial AddFont() call. return ret; } // Keep source/input FontData void ImFontAtlasFontDestroyOutput(ImFontAtlas *atlas, ImFont *font) { font->ClearOutputData(); for (ImFontConfig *src : font->Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader && loader->FontSrcDestroy != NULL) loader->FontSrcDestroy(atlas, src); } } //----------------------------------------------------------------------------------------------------------------------------- bool ImFontAtlasFontSourceInit(ImFontAtlas *atlas, ImFontConfig *src) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader->FontSrcInit != NULL && !loader->FontSrcInit(atlas, src)) return false; return true; } void ImFontAtlasFontSourceAddToFont(ImFontAtlas *atlas, ImFont *font, ImFontConfig *src) { if (src->MergeMode == false) { font->ClearOutputData(); // font->FontSize = src->SizePixels; font->ContainerAtlas = atlas; IM_ASSERT(font->Sources[0] == src); } atlas->TexIsBuilt = false; // For legacy backends ImFontAtlasBuildSetupFontSpecialGlyphs(atlas, font, src); } void ImFontAtlasFontDestroySourceData(ImFontAtlas *atlas, ImFontConfig *src) { IM_UNUSED(atlas); if (src->FontDataOwnedByAtlas) IM_FREE(src->FontData); src->FontData = NULL; if (src->GlyphExcludeRanges) IM_FREE((void *)src->GlyphExcludeRanges); src->GlyphExcludeRanges = NULL; } // Create a compact, baked "..." if it doesn't exist, by using the ".". // This may seem overly complicated right now but the point is to exercise and improve a technique which should be // increasingly used. // FIXME-NEWATLAS: This borrows too much from FontLoader's FontLoadGlyph() handlers and suggest that we should add // further helpers. static ImFontGlyph *ImFontAtlasBuildSetupFontBakedEllipsis(ImFontAtlas *atlas, ImFontBaked *baked) { ImFont *font = baked->ContainerFont; IM_ASSERT(font->EllipsisChar != 0); const ImFontGlyph *dot_glyph = baked->FindGlyphNoFallback((ImWchar)'.'); if (dot_glyph == NULL) dot_glyph = baked->FindGlyphNoFallback((ImWchar)0xFF0E); if (dot_glyph == NULL) return NULL; ImFontAtlasRectId dot_r_id = dot_glyph->PackId; // Deep copy to avoid invalidation of glyphs and rect pointers ImTextureRect *dot_r = ImFontAtlasPackGetRect(atlas, dot_r_id); const int dot_spacing = 1; const float dot_step = (dot_glyph->X1 - dot_glyph->X0) + dot_spacing; ImFontAtlasRectId pack_id = ImFontAtlasPackAddRect(atlas, (dot_r->w * 3 + dot_spacing * 2), dot_r->h); ImTextureRect *r = ImFontAtlasPackGetRect(atlas, pack_id); ImFontGlyph glyph_in = {}; ImFontGlyph *glyph = &glyph_in; glyph->Codepoint = font->EllipsisChar; glyph->AdvanceX = ImMax(dot_glyph->AdvanceX, dot_glyph->X0 + dot_step * 3.0f - dot_spacing); // FIXME: Slightly odd for normally mono-space fonts // but since this is used for trailing contents. glyph->X0 = dot_glyph->X0; glyph->Y0 = dot_glyph->Y0; glyph->X1 = dot_glyph->X0 + dot_step * 3 - dot_spacing; glyph->Y1 = dot_glyph->Y1; glyph->Visible = true; glyph->PackId = pack_id; glyph = ImFontAtlasBakedAddFontGlyph(atlas, baked, NULL, glyph); dot_glyph = NULL; // Invalidated // Copy to texture, post-process and queue update for backend // FIXME-NEWATLAS-V2: Dot glyph is already post-processed as this point, so this would damage it. dot_r = ImFontAtlasPackGetRect(atlas, dot_r_id); ImTextureData *tex = atlas->TexData; for (int n = 0; n < 3; n++) ImFontAtlasTextureBlockCopy(tex, dot_r->x, dot_r->y, tex, r->x + (dot_r->w + dot_spacing) * n, r->y, dot_r->w, dot_r->h); ImFontAtlasTextureBlockQueueUpload(atlas, tex, r->x, r->y, r->w, r->h); return glyph; } // Load fallback in order to obtain its index // (this is called from in hot-path so we avoid extraneous parameters to minimize impact on code size) static void ImFontAtlasBuildSetupFontBakedFallback(ImFontBaked *baked) { IM_ASSERT(baked->FallbackGlyphIndex == -1); IM_ASSERT(baked->FallbackAdvanceX == 0.0f); ImFont *font = baked->ContainerFont; ImFontGlyph *fallback_glyph = NULL; if (font->FallbackChar != 0) fallback_glyph = baked->FindGlyphNoFallback(font->FallbackChar); if (fallback_glyph == NULL) { ImFontGlyph *space_glyph = baked->FindGlyphNoFallback((ImWchar)' '); ImFontGlyph glyph; glyph.Codepoint = 0; glyph.AdvanceX = space_glyph ? space_glyph->AdvanceX : IM_ROUND(baked->Size * 0.40f); fallback_glyph = ImFontAtlasBakedAddFontGlyph(font->ContainerAtlas, baked, NULL, &glyph); } baked->FallbackGlyphIndex = baked->Glyphs.index_from_ptr( fallback_glyph); // Storing index avoid need to update pointer on growth and simplify inner loop code baked->FallbackAdvanceX = fallback_glyph->AdvanceX; } static void ImFontAtlasBuildSetupFontBakedBlanks(ImFontAtlas *atlas, ImFontBaked *baked) { // Mark space as always hidden (not strictly correct/necessary. but some e.g. icons fonts don't have a space. it // tends to look neater in previews) ImFontGlyph *space_glyph = baked->FindGlyphNoFallback((ImWchar)' '); if (space_glyph != NULL) space_glyph->Visible = false; // Setup Tab character. // FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string // starts at "column 0" ?) if (baked->FindGlyphNoFallback('\t') == NULL && space_glyph != NULL) { ImFontGlyph tab_glyph; tab_glyph.Codepoint = '\t'; tab_glyph.AdvanceX = space_glyph->AdvanceX * IM_TABSIZE; ImFontAtlasBakedAddFontGlyph(atlas, baked, NULL, &tab_glyph); } } // Load/identify special glyphs // (note that this is called again for fonts with MergeMode) void ImFontAtlasBuildSetupFontSpecialGlyphs(ImFontAtlas *atlas, ImFont *font, ImFontConfig *src) { IM_UNUSED(atlas); IM_ASSERT(font->Sources.contains(src)); // Find Fallback character. Actual glyph loaded in GetFontBaked(). const ImWchar fallback_chars[] = {font->FallbackChar, (ImWchar)IM_UNICODE_CODEPOINT_INVALID, (ImWchar)'?', (ImWchar)' '}; if (font->FallbackChar == 0) for (ImWchar candidate_char : fallback_chars) if (candidate_char != 0 && font->IsGlyphInFont(candidate_char)) { font->FallbackChar = (ImWchar)candidate_char; break; } // Setup Ellipsis character. It is required for rendering elided text. We prefer using U+2026 (horizontal ellipsis). // However some old fonts may contain ellipsis at U+0085. Here we auto-detect most suitable ellipsis character. // FIXME: Note that 0x2026 is rarely included in our font ranges. Because of this we are more likely to use three // individual dots. const ImWchar ellipsis_chars[] = {src->EllipsisChar, (ImWchar)0x2026, (ImWchar)0x0085}; if (font->EllipsisChar == 0) for (ImWchar candidate_char : ellipsis_chars) if (candidate_char != 0 && font->IsGlyphInFont(candidate_char)) { font->EllipsisChar = candidate_char; break; } if (font->EllipsisChar == 0) { font->EllipsisChar = 0x0085; font->EllipsisAutoBake = true; } } void ImFontAtlasBakedDiscardFontGlyph(ImFontAtlas *atlas, ImFont *font, ImFontBaked *baked, ImFontGlyph *glyph) { if (glyph->PackId != ImFontAtlasRectId_Invalid) { ImFontAtlasPackDiscardRect(atlas, glyph->PackId); glyph->PackId = ImFontAtlasRectId_Invalid; } ImWchar c = (ImWchar)glyph->Codepoint; IM_ASSERT(font->FallbackChar != c && font->EllipsisChar != c); // Unsupported for simplicity IM_ASSERT(glyph >= baked->Glyphs.Data && glyph < baked->Glyphs.Data + baked->Glyphs.Size); IM_UNUSED(font); baked->IndexLookup[c] = IM_FONTGLYPH_INDEX_UNUSED; baked->IndexAdvanceX[c] = baked->FallbackAdvanceX; } ImFontBaked *ImFontAtlasBakedAdd(ImFontAtlas *atlas, ImFont *font, float font_size, float font_rasterizer_density, ImGuiID baked_id) { IMGUI_DEBUG_LOG_FONT("[font] Created baked %.2fpx\n", font_size); ImFontBaked *baked = atlas->Builder->BakedPool.push_back(ImFontBaked()); baked->Size = font_size; baked->RasterizerDensity = font_rasterizer_density; baked->BakedId = baked_id; baked->ContainerFont = font; baked->LastUsedFrame = atlas->Builder->FrameCount; // Initialize backend data size_t loader_data_size = 0; for (ImFontConfig *src : font->Sources) // Cannot easily be cached as we allow changing backend { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; loader_data_size += loader->FontBakedSrcLoaderDataSize; } baked->FontLoaderDatas = (loader_data_size > 0) ? IM_ALLOC(loader_data_size) : NULL; char *loader_data_p = (char *)baked->FontLoaderDatas; for (ImFontConfig *src : font->Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader->FontBakedInit) loader->FontBakedInit(atlas, src, baked, loader_data_p); loader_data_p += loader->FontBakedSrcLoaderDataSize; } ImFontAtlasBuildSetupFontBakedBlanks(atlas, baked); return baked; } // FIXME-OPT: This is not a fast query. Adding a BakedCount field in Font might allow to take a shortcut for the most // common case. ImFontBaked *ImFontAtlasBakedGetClosestMatch(ImFontAtlas *atlas, ImFont *font, float font_size, float font_rasterizer_density) { ImFontAtlasBuilder *builder = atlas->Builder; for (int step_n = 0; step_n < 2; step_n++) { ImFontBaked *closest_larger_match = NULL; ImFontBaked *closest_smaller_match = NULL; for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++) { ImFontBaked *baked = &builder->BakedPool[baked_n]; if (baked->ContainerFont != font || baked->WantDestroy) continue; if (step_n == 0 && baked->RasterizerDensity != font_rasterizer_density) // First try with same density continue; if (baked->Size > font_size && (closest_larger_match == NULL || baked->Size < closest_larger_match->Size)) closest_larger_match = baked; if (baked->Size < font_size && (closest_smaller_match == NULL || baked->Size > closest_smaller_match->Size)) closest_smaller_match = baked; } if (closest_larger_match) if (closest_smaller_match == NULL || (closest_larger_match->Size >= font_size * 2.0f && closest_smaller_match->Size > font_size * 0.5f)) return closest_larger_match; if (closest_smaller_match) return closest_smaller_match; } return NULL; } void ImFontAtlasBakedDiscard(ImFontAtlas *atlas, ImFont *font, ImFontBaked *baked) { ImFontAtlasBuilder *builder = atlas->Builder; IMGUI_DEBUG_LOG_FONT("[font] Discard baked %.2f for \"%s\"\n", baked->Size, font->GetDebugName()); for (ImFontGlyph &glyph : baked->Glyphs) if (glyph.PackId != ImFontAtlasRectId_Invalid) ImFontAtlasPackDiscardRect(atlas, glyph.PackId); char *loader_data_p = (char *)baked->FontLoaderDatas; for (ImFontConfig *src : font->Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader->FontBakedDestroy) loader->FontBakedDestroy(atlas, src, baked, loader_data_p); loader_data_p += loader->FontBakedSrcLoaderDataSize; } if (baked->FontLoaderDatas) { IM_FREE(baked->FontLoaderDatas); baked->FontLoaderDatas = NULL; } builder->BakedMap.SetVoidPtr(baked->BakedId, NULL); builder->BakedDiscardedCount++; baked->ClearOutputData(); baked->WantDestroy = true; font->LastBaked = NULL; } // use unused_frames==0 to discard everything. void ImFontAtlasFontDiscardBakes(ImFontAtlas *atlas, ImFont *font, int unused_frames) { if (ImFontAtlasBuilder *builder = atlas->Builder) // This can be called from font destructor for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++) { ImFontBaked *baked = &builder->BakedPool[baked_n]; if (baked->LastUsedFrame + unused_frames > atlas->Builder->FrameCount) continue; if (baked->ContainerFont != font || baked->WantDestroy) continue; ImFontAtlasBakedDiscard(atlas, font, baked); } } // use unused_frames==0 to discard everything. void ImFontAtlasBuildDiscardBakes(ImFontAtlas *atlas, int unused_frames) { ImFontAtlasBuilder *builder = atlas->Builder; for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++) { ImFontBaked *baked = &builder->BakedPool[baked_n]; if (baked->LastUsedFrame + unused_frames > atlas->Builder->FrameCount) continue; if (baked->WantDestroy || (baked->ContainerFont->Flags & ImFontFlags_LockBakedSizes)) continue; ImFontAtlasBakedDiscard(atlas, baked->ContainerFont, baked); } } // Those functions are designed to facilitate changing the underlying structures for ImFontAtlas to store an array of // ImDrawListSharedData* void ImFontAtlasAddDrawListSharedData(ImFontAtlas *atlas, ImDrawListSharedData *data) { IM_ASSERT(!atlas->DrawListSharedDatas.contains(data)); atlas->DrawListSharedDatas.push_back(data); } void ImFontAtlasRemoveDrawListSharedData(ImFontAtlas *atlas, ImDrawListSharedData *data) { IM_ASSERT(atlas->DrawListSharedDatas.contains(data)); atlas->DrawListSharedDatas.find_erase(data); } // Update texture identifier in all active draw lists void ImFontAtlasUpdateDrawListsTextures(ImFontAtlas *atlas, ImTextureRef old_tex, ImTextureRef new_tex) { for (ImDrawListSharedData *shared_data : atlas->DrawListSharedDatas) for (ImDrawList *draw_list : shared_data->DrawLists) { // Replace in command-buffer // (there is not need to replace in ImDrawListSplitter: current channel is in ImDrawList's CmdBuffer[], // other channels will be on SetCurrentChannel() which already needs to compare CmdHeader anyhow) if (draw_list->CmdBuffer.Size > 0 && draw_list->_CmdHeader.TexRef == old_tex) draw_list->_SetTexture(new_tex); // Replace in stack for (ImTextureRef &stacked_tex : draw_list->_TextureStack) if (stacked_tex == old_tex) stacked_tex = new_tex; } } // Update texture coordinates in all draw list shared context // FIXME-NEWATLAS FIXME-OPT: Doesn't seem necessary to update for all, only one bound to current context? void ImFontAtlasUpdateDrawListsSharedData(ImFontAtlas *atlas) { for (ImDrawListSharedData *shared_data : atlas->DrawListSharedDatas) { shared_data->TexUvWhitePixel = atlas->TexUvWhitePixel; shared_data->TexUvLines = atlas->TexUvLines; } } // Set current texture. This is mostly called from AddTexture() + to handle a failed resize. static void ImFontAtlasBuildSetTexture(ImFontAtlas *atlas, ImTextureData *tex) { ImTextureRef old_tex_ref = atlas->TexRef; atlas->TexData = tex; atlas->TexUvScale = ImVec2(1.0f / tex->Width, 1.0f / tex->Height); atlas->TexRef._TexData = tex; // atlas->TexRef._TexID = tex->TexID; // <-- We intentionally don't do that. It would be misleading and betray // promise that both fields aren't set. ImFontAtlasUpdateDrawListsTextures(atlas, old_tex_ref, atlas->TexRef); } // Create a new texture, discard previous one ImTextureData *ImFontAtlasTextureAdd(ImFontAtlas *atlas, int w, int h) { ImTextureData *old_tex = atlas->TexData; ImTextureData *new_tex; // FIXME: Cannot reuse texture because old UV may have been used already (unless we remap UV). /*if (old_tex != NULL && old_tex->Status == ImTextureStatus_WantCreate) { // Reuse texture not yet used by backend. IM_ASSERT(old_tex->TexID == ImTextureID_Invalid && old_tex->BackendUserData == NULL); old_tex->DestroyPixels(); old_tex->Updates.clear(); new_tex = old_tex; old_tex = NULL; } else*/ { // Add new new_tex = IM_NEW(ImTextureData)(); new_tex->UniqueID = atlas->TexNextUniqueID++; atlas->TexList.push_back(new_tex); } if (old_tex != NULL) { // Queue old as to destroy next frame old_tex->WantDestroyNextFrame = true; IM_ASSERT(old_tex->Status == ImTextureStatus_OK || old_tex->Status == ImTextureStatus_WantCreate || old_tex->Status == ImTextureStatus_WantUpdates); } new_tex->Create(atlas->TexDesiredFormat, w, h); new_tex->Status = ImTextureStatus_WantCreate; atlas->TexIsBuilt = false; ImFontAtlasBuildSetTexture(atlas, new_tex); return new_tex; } #if 0 #define STB_IMAGE_WRITE_IMPLEMENTATION #include "../stb/stb_image_write.h" static void ImFontAtlasDebugWriteTexToDisk(ImTextureData* tex, const char* description) { ImGuiContext& g = *GImGui; char buf[128]; ImFormatString(buf, IM_ARRAYSIZE(buf), "[%05d] Texture #%03d - %s.png", g.FrameCount, tex->UniqueID, description); stbi_write_png(buf, tex->Width, tex->Height, tex->BytesPerPixel, tex->Pixels, tex->GetPitch()); // tex->BytesPerPixel is technically not component, but ok for the formats we support. } #endif void ImFontAtlasTextureRepack(ImFontAtlas *atlas, int w, int h) { ImFontAtlasBuilder *builder = atlas->Builder; builder->LockDisableResize = true; ImTextureData *old_tex = atlas->TexData; ImTextureData *new_tex = ImFontAtlasTextureAdd(atlas, w, h); new_tex->UseColors = old_tex->UseColors; IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: resize+repack %dx%d => Texture #%03d: %dx%d\n", old_tex->UniqueID, old_tex->Width, old_tex->Height, new_tex->UniqueID, new_tex->Width, new_tex->Height); // for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++) // IMGUI_DEBUG_LOG_FONT("[font] - Baked %.2fpx, %d glyphs, want_destroy=%d\n", // builder->BakedPool[baked_n].FontSize, builder->BakedPool[baked_n].Glyphs.Size, // builder->BakedPool[baked_n].WantDestroy); // IMGUI_DEBUG_LOG_FONT("[font] - Old packed rects: %d, area %d px\n", builder->RectsPackedCount, // builder->RectsPackedSurface); ImFontAtlasDebugWriteTexToDisk(old_tex, "Before Pack"); // Repack, lose discarded rectangle, copy pixels // FIXME-NEWATLAS: This is unstable because packing order is based on RectsIndex // FIXME-NEWATLAS-V2: Repacking in batch would be beneficial to packing heuristic, and fix stability. // FIXME-NEWATLAS-TESTS: Test calling RepackTexture with size too small to fits existing rects. ImFontAtlasPackInit(atlas); ImVector old_rects; ImVector old_index = builder->RectsIndex; old_rects.swap(builder->Rects); for (ImFontAtlasRectEntry &index_entry : builder->RectsIndex) { if (index_entry.IsUsed == false) continue; ImTextureRect &old_r = old_rects[index_entry.TargetIndex]; if (old_r.w == 0 && old_r.h == 0) continue; ImFontAtlasRectId new_r_id = ImFontAtlasPackAddRect(atlas, old_r.w, old_r.h, &index_entry); if (new_r_id == ImFontAtlasRectId_Invalid) { // Undo, grow texture and try repacking again. // FIXME-NEWATLAS-TESTS: This is a very rarely exercised path! It needs to be automatically tested properly. IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: resize failed. Will grow.\n", new_tex->UniqueID); new_tex->WantDestroyNextFrame = true; builder->Rects.swap(old_rects); builder->RectsIndex = old_index; ImFontAtlasBuildSetTexture(atlas, old_tex); ImFontAtlasTextureGrow(atlas, w, h); // Recurse return; } IM_ASSERT(ImFontAtlasRectId_GetIndex(new_r_id) == builder->RectsIndex.index_from_ptr(&index_entry)); ImTextureRect *new_r = ImFontAtlasPackGetRect(atlas, new_r_id); ImFontAtlasTextureBlockCopy(old_tex, old_r.x, old_r.y, new_tex, new_r->x, new_r->y, new_r->w, new_r->h); } IM_ASSERT(old_rects.Size == builder->Rects.Size + builder->RectsDiscardedCount); builder->RectsDiscardedCount = 0; builder->RectsDiscardedSurface = 0; // Patch glyphs UV for (int baked_n = 0; baked_n < builder->BakedPool.Size; baked_n++) for (ImFontGlyph &glyph : builder->BakedPool[baked_n].Glyphs) if (glyph.PackId != ImFontAtlasRectId_Invalid) { ImTextureRect *r = ImFontAtlasPackGetRect(atlas, glyph.PackId); glyph.U0 = (r->x) * atlas->TexUvScale.x; glyph.V0 = (r->y) * atlas->TexUvScale.y; glyph.U1 = (r->x + r->w) * atlas->TexUvScale.x; glyph.V1 = (r->y + r->h) * atlas->TexUvScale.y; } // Update other cached UV ImFontAtlasBuildUpdateLinesTexData(atlas); ImFontAtlasBuildUpdateBasicTexData(atlas); builder->LockDisableResize = false; ImFontAtlasUpdateDrawListsSharedData(atlas); // ImFontAtlasDebugWriteTexToDisk(new_tex, "After Pack"); } void ImFontAtlasTextureGrow(ImFontAtlas *atlas, int old_tex_w, int old_tex_h) { // ImFontAtlasDebugWriteTexToDisk(atlas->TexData, "Before Grow"); ImFontAtlasBuilder *builder = atlas->Builder; if (old_tex_w == -1) old_tex_w = atlas->TexData->Width; if (old_tex_h == -1) old_tex_h = atlas->TexData->Height; // FIXME-NEWATLAS-V2: What to do when reaching limits exposed by backend? // FIXME-NEWATLAS-V2: Does ImFontAtlasFlags_NoPowerOfTwoHeight makes sense now? Allow 'lock' and 'compact' // operations? IM_ASSERT(ImIsPowerOfTwo(old_tex_w) && ImIsPowerOfTwo(old_tex_h)); IM_ASSERT(ImIsPowerOfTwo(atlas->TexMinWidth) && ImIsPowerOfTwo(atlas->TexMaxWidth) && ImIsPowerOfTwo(atlas->TexMinHeight) && ImIsPowerOfTwo(atlas->TexMaxHeight)); // Grow texture so it follows roughly a square. // - Grow height before width, as width imply more packing nodes. // - Caller should be taking account of RectsDiscardedSurface and may not need to grow. int new_tex_w = (old_tex_h <= old_tex_w) ? old_tex_w : old_tex_w * 2; int new_tex_h = (old_tex_h <= old_tex_w) ? old_tex_h * 2 : old_tex_h; // Handle minimum size first (for pathologically large packed rects) const int pack_padding = atlas->TexGlyphPadding; new_tex_w = ImMax(new_tex_w, ImUpperPowerOfTwo(builder->MaxRectSize.x + pack_padding)); new_tex_h = ImMax(new_tex_h, ImUpperPowerOfTwo(builder->MaxRectSize.y + pack_padding)); new_tex_w = ImClamp(new_tex_w, atlas->TexMinWidth, atlas->TexMaxWidth); new_tex_h = ImClamp(new_tex_h, atlas->TexMinHeight, atlas->TexMaxHeight); if (new_tex_w == old_tex_w && new_tex_h == old_tex_h) return; ImFontAtlasTextureRepack(atlas, new_tex_w, new_tex_h); } void ImFontAtlasTextureMakeSpace(ImFontAtlas *atlas) { // Can some baked contents be ditched? // IMGUI_DEBUG_LOG_FONT("[font] ImFontAtlasBuildMakeSpace()\n"); ImFontAtlasBuilder *builder = atlas->Builder; ImFontAtlasBuildDiscardBakes(atlas, 2); // Currently using a heuristic for repack without growing. if (builder->RectsDiscardedSurface < builder->RectsPackedSurface * 0.20f) ImFontAtlasTextureGrow(atlas); else ImFontAtlasTextureRepack(atlas, atlas->TexData->Width, atlas->TexData->Height); } ImVec2i ImFontAtlasTextureGetSizeEstimate(ImFontAtlas *atlas) { int min_w = ImUpperPowerOfTwo(atlas->TexMinWidth); int min_h = ImUpperPowerOfTwo(atlas->TexMinHeight); if (atlas->Builder == NULL || atlas->TexData == NULL || atlas->TexData->Status == ImTextureStatus_WantDestroy) return ImVec2i(min_w, min_h); ImFontAtlasBuilder *builder = atlas->Builder; min_w = ImMax(ImUpperPowerOfTwo(builder->MaxRectSize.x), min_w); min_h = ImMax(ImUpperPowerOfTwo(builder->MaxRectSize.y), min_h); const int surface_approx = builder->RectsPackedSurface - builder->RectsDiscardedSurface; // Expected surface after repack const int surface_sqrt = (int)sqrtf((float)surface_approx); int new_tex_w; int new_tex_h; if (min_w >= min_h) { new_tex_w = ImMax(min_w, ImUpperPowerOfTwo(surface_sqrt)); new_tex_h = ImMax(min_h, (int)((surface_approx + new_tex_w - 1) / new_tex_w)); if ((atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) == 0) new_tex_h = ImUpperPowerOfTwo(new_tex_h); } else { new_tex_h = ImMax(min_h, ImUpperPowerOfTwo(surface_sqrt)); if ((atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) == 0) new_tex_h = ImUpperPowerOfTwo(new_tex_h); new_tex_w = ImMax(min_w, (int)((surface_approx + new_tex_h - 1) / new_tex_h)); } IM_ASSERT(ImIsPowerOfTwo(new_tex_w) && ImIsPowerOfTwo(new_tex_h)); return ImVec2i(new_tex_w, new_tex_h); } // Clear all output. Invalidates all AddCustomRect() return values! void ImFontAtlasBuildClear(ImFontAtlas *atlas) { ImVec2i new_tex_size = ImFontAtlasTextureGetSizeEstimate(atlas); ImFontAtlasBuildDestroy(atlas); ImFontAtlasTextureAdd(atlas, new_tex_size.x, new_tex_size.y); ImFontAtlasBuildInit(atlas); for (ImFontConfig &src : atlas->Sources) ImFontAtlasFontSourceInit(atlas, &src); for (ImFont *font : atlas->Fonts) for (ImFontConfig *src : font->Sources) ImFontAtlasFontSourceAddToFont(atlas, font, src); } // You should not need to call this manually! // If you think you do, let us know and we can advise about policies auto-compact. void ImFontAtlasTextureCompact(ImFontAtlas *atlas) { ImFontAtlasBuilder *builder = atlas->Builder; ImFontAtlasBuildDiscardBakes(atlas, 1); ImTextureData *old_tex = atlas->TexData; ImVec2i old_tex_size = ImVec2i(old_tex->Width, old_tex->Height); ImVec2i new_tex_size = ImFontAtlasTextureGetSizeEstimate(atlas); if (builder->RectsDiscardedCount == 0 && new_tex_size.x == old_tex_size.x && new_tex_size.y == old_tex_size.y) return; ImFontAtlasTextureRepack(atlas, new_tex_size.x, new_tex_size.y); } // Start packing over current empty texture void ImFontAtlasBuildInit(ImFontAtlas *atlas) { // Select Backend // - Note that we do not reassign to atlas->FontLoader, since it is likely to point to static data which // may mess with some hot-reloading schemes. If you need to assign to this (for dynamic selection) AND are // using a hot-reloading scheme that messes up static data, store your own instance of FontLoader somewhere // and point to it instead of pointing directly to return value of the GetFontLoaderXXX functions. if (atlas->FontLoader == NULL) { #ifdef IMGUI_ENABLE_FREETYPE ImFontAtlasBuildSetupFontLoader(atlas, ImGuiFreeType::GetFontLoader()); #elif defined(IMGUI_ENABLE_STB_TRUETYPE) ImFontAtlasBuildSetupFontLoader(atlas, ImFontAtlasGetFontLoaderForStbTruetype()); #else IM_ASSERT(0); // Invalid Build function #endif } // Create initial texture size if (atlas->TexData == NULL || atlas->TexData->Pixels == NULL) ImFontAtlasTextureAdd(atlas, ImUpperPowerOfTwo(atlas->TexMinWidth), ImUpperPowerOfTwo(atlas->TexMinHeight)); atlas->Builder = IM_NEW(ImFontAtlasBuilder)(); if (atlas->FontLoader->LoaderInit) atlas->FontLoader->LoaderInit(atlas); ImFontAtlasBuildUpdateRendererHasTexturesFromContext(atlas); ImFontAtlasPackInit(atlas); // Add required texture data ImFontAtlasBuildUpdateLinesTexData(atlas); ImFontAtlasBuildUpdateBasicTexData(atlas); // Register fonts ImFontAtlasBuildUpdatePointers(atlas); // Update UV coordinates etc. stored in bound ImDrawListSharedData instance ImFontAtlasUpdateDrawListsSharedData(atlas); // atlas->TexIsBuilt = true; } // Destroy builder and all cached glyphs. Do not destroy actual fonts. void ImFontAtlasBuildDestroy(ImFontAtlas *atlas) { for (ImFont *font : atlas->Fonts) ImFontAtlasFontDestroyOutput(atlas, font); if (atlas->Builder && atlas->FontLoader && atlas->FontLoader->LoaderShutdown) { atlas->FontLoader->LoaderShutdown(atlas); IM_ASSERT(atlas->FontLoaderData == NULL); } IM_DELETE(atlas->Builder); atlas->Builder = NULL; } void ImFontAtlasPackInit(ImFontAtlas *atlas) { ImTextureData *tex = atlas->TexData; ImFontAtlasBuilder *builder = atlas->Builder; // In theory we could decide to reduce the number of nodes, e.g. halve them, and waste a little texture space, but // it doesn't seem worth it. const int pack_node_count = tex->Width / 2; builder->PackNodes.resize(pack_node_count); IM_STATIC_ASSERT(sizeof(stbrp_context) <= sizeof(stbrp_context_opaque)); stbrp_init_target((stbrp_context *)(void *)&builder->PackContext, tex->Width, tex->Height, builder->PackNodes.Data, builder->PackNodes.Size); builder->RectsPackedSurface = builder->RectsPackedCount = 0; builder->MaxRectSize = ImVec2i(0, 0); builder->MaxRectBounds = ImVec2i(0, 0); } // This is essentially a free-list pattern, it may be nice to wrap it into a dedicated type. static ImFontAtlasRectId ImFontAtlasPackAllocRectEntry(ImFontAtlas *atlas, int rect_idx) { ImFontAtlasBuilder *builder = (ImFontAtlasBuilder *)atlas->Builder; int index_idx; ImFontAtlasRectEntry *index_entry; if (builder->RectsIndexFreeListStart < 0) { builder->RectsIndex.resize(builder->RectsIndex.Size + 1); index_idx = builder->RectsIndex.Size - 1; index_entry = &builder->RectsIndex[index_idx]; memset(index_entry, 0, sizeof(*index_entry)); } else { index_idx = builder->RectsIndexFreeListStart; index_entry = &builder->RectsIndex[index_idx]; IM_ASSERT(index_entry->IsUsed == false && index_entry->Generation > 0); // Generation is incremented during DiscardRect builder->RectsIndexFreeListStart = index_entry->TargetIndex; } index_entry->TargetIndex = rect_idx; index_entry->IsUsed = 1; return ImFontAtlasRectId_Make(index_idx, index_entry->Generation); } // Overwrite existing entry static ImFontAtlasRectId ImFontAtlasPackReuseRectEntry(ImFontAtlas *atlas, ImFontAtlasRectEntry *index_entry) { IM_ASSERT(index_entry->IsUsed); index_entry->TargetIndex = atlas->Builder->Rects.Size - 1; int index_idx = atlas->Builder->RectsIndex.index_from_ptr(index_entry); return ImFontAtlasRectId_Make(index_idx, index_entry->Generation); } // This is expected to be called in batches and followed by a repack void ImFontAtlasPackDiscardRect(ImFontAtlas *atlas, ImFontAtlasRectId id) { IM_ASSERT(id != ImFontAtlasRectId_Invalid); ImTextureRect *rect = ImFontAtlasPackGetRect(atlas, id); if (rect == NULL) return; ImFontAtlasBuilder *builder = atlas->Builder; int index_idx = ImFontAtlasRectId_GetIndex(id); ImFontAtlasRectEntry *index_entry = &builder->RectsIndex[index_idx]; IM_ASSERT(index_entry->IsUsed && index_entry->TargetIndex >= 0); index_entry->IsUsed = false; index_entry->TargetIndex = builder->RectsIndexFreeListStart; index_entry->Generation++; const int pack_padding = atlas->TexGlyphPadding; builder->RectsIndexFreeListStart = index_idx; builder->RectsDiscardedCount++; builder->RectsDiscardedSurface += (rect->w + pack_padding) * (rect->h + pack_padding); rect->w = rect->h = 0; // Clear rectangle so it won't be packed again } // Important: Calling this may recreate a new texture and therefore change atlas->TexData // FIXME-NEWFONTS: Expose other glyph padding settings for custom alteration (e.g. drop shadows). See #7962 ImFontAtlasRectId ImFontAtlasPackAddRect(ImFontAtlas *atlas, int w, int h, ImFontAtlasRectEntry *overwrite_entry) { IM_ASSERT(w > 0 && w <= 0xFFFF); IM_ASSERT(h > 0 && h <= 0xFFFF); ImFontAtlasBuilder *builder = (ImFontAtlasBuilder *)atlas->Builder; const int pack_padding = atlas->TexGlyphPadding; builder->MaxRectSize.x = ImMax(builder->MaxRectSize.x, w); builder->MaxRectSize.y = ImMax(builder->MaxRectSize.y, h); // Pack ImTextureRect r = {0, 0, (unsigned short)w, (unsigned short)h}; for (int attempts_remaining = 3; attempts_remaining >= 0; attempts_remaining--) { // Try packing stbrp_rect pack_r = {}; pack_r.w = w + pack_padding; pack_r.h = h + pack_padding; stbrp_pack_rects((stbrp_context *)(void *)&builder->PackContext, &pack_r, 1); r.x = (unsigned short)pack_r.x; r.y = (unsigned short)pack_r.y; if (pack_r.was_packed) break; // If we ran out of attempts, return fallback if (attempts_remaining == 0 || builder->LockDisableResize) { IMGUI_DEBUG_LOG_FONT("[font] Failed packing %dx%d rectangle. Returning fallback.\n", w, h); return ImFontAtlasRectId_Invalid; } // Resize or repack atlas! (this should be a rare event) ImFontAtlasTextureMakeSpace(atlas); } builder->MaxRectBounds.x = ImMax(builder->MaxRectBounds.x, r.x + r.w + pack_padding); builder->MaxRectBounds.y = ImMax(builder->MaxRectBounds.y, r.y + r.h + pack_padding); builder->RectsPackedCount++; builder->RectsPackedSurface += (w + pack_padding) * (h + pack_padding); builder->Rects.push_back(r); if (overwrite_entry != NULL) return ImFontAtlasPackReuseRectEntry( atlas, overwrite_entry); // Write into an existing entry instead of adding one (used during repack) else return ImFontAtlasPackAllocRectEntry(atlas, builder->Rects.Size - 1); } // Generally for non-user facing functions: assert on invalid ID. ImTextureRect *ImFontAtlasPackGetRect(ImFontAtlas *atlas, ImFontAtlasRectId id) { IM_ASSERT(id != ImFontAtlasRectId_Invalid); int index_idx = ImFontAtlasRectId_GetIndex(id); ImFontAtlasBuilder *builder = (ImFontAtlasBuilder *)atlas->Builder; ImFontAtlasRectEntry *index_entry = &builder->RectsIndex[index_idx]; IM_ASSERT(index_entry->Generation == ImFontAtlasRectId_GetGeneration(id)); IM_ASSERT(index_entry->IsUsed); return &builder->Rects[index_entry->TargetIndex]; } // For user-facing functions: return NULL on invalid ID. // Important: return pointer is valid until next call to AddRect(), e.g. FindGlyph(), CalcTextSize() can all potentially // invalidate previous pointers. ImTextureRect *ImFontAtlasPackGetRectSafe(ImFontAtlas *atlas, ImFontAtlasRectId id) { if (id == ImFontAtlasRectId_Invalid) return NULL; int index_idx = ImFontAtlasRectId_GetIndex(id); if (atlas->Builder == NULL) ImFontAtlasBuildInit(atlas); ImFontAtlasBuilder *builder = (ImFontAtlasBuilder *)atlas->Builder; if (index_idx >= builder->RectsIndex.Size) return NULL; ImFontAtlasRectEntry *index_entry = &builder->RectsIndex[index_idx]; if (index_entry->Generation != ImFontAtlasRectId_GetGeneration(id) || !index_entry->IsUsed) return NULL; return &builder->Rects[index_entry->TargetIndex]; } // Important! This assume by ImFontConfig::GlyphExcludeRanges[] is a SMALL ARRAY (e.g. <10 entries) // Use "Input Glyphs Overlap Detection Tool" to display a list of glyphs provided by multiple sources in order to set // this array up. static bool ImFontAtlasBuildAcceptCodepointForSource(ImFontConfig *src, ImWchar codepoint) { if (const ImWchar *exclude_list = src->GlyphExcludeRanges) for (; exclude_list[0] != 0; exclude_list += 2) if (codepoint >= exclude_list[0] && codepoint <= exclude_list[1]) return false; return true; } static void ImFontBaked_BuildGrowIndex(ImFontBaked *baked, int new_size) { IM_ASSERT(baked->IndexAdvanceX.Size == baked->IndexLookup.Size); if (new_size <= baked->IndexLookup.Size) return; baked->IndexAdvanceX.resize(new_size, -1.0f); baked->IndexLookup.resize(new_size, IM_FONTGLYPH_INDEX_UNUSED); } static void ImFontAtlas_FontHookRemapCodepoint(ImFontAtlas *atlas, ImFont *font, ImWchar *c) { IM_UNUSED(atlas); if (font->RemapPairs.Data.Size != 0) *c = (ImWchar)font->RemapPairs.GetInt((ImGuiID)*c, (int)*c); } static ImFontGlyph *ImFontBaked_BuildLoadGlyph(ImFontBaked *baked, ImWchar codepoint) { ImFont *font = baked->ContainerFont; ImFontAtlas *atlas = font->ContainerAtlas; if (atlas->Locked || (font->Flags & ImFontFlags_NoLoadGlyphs)) { // Lazily load fallback glyph if (baked->FallbackGlyphIndex == -1 && baked->LockLoadingFallback == 0) ImFontAtlasBuildSetupFontBakedFallback(baked); return NULL; } // User remapping hooks ImWchar src_codepoint = codepoint; ImFontAtlas_FontHookRemapCodepoint(atlas, font, &codepoint); // char utf8_buf[5]; // IMGUI_DEBUG_LOG("[font] BuildLoadGlyph U+%04X (%s)\n", (unsigned int)codepoint, ImTextCharToUtf8(utf8_buf, // (unsigned int)codepoint)); // Special hook // FIXME-NEWATLAS: it would be nicer if this used a more standardized way of hooking if (codepoint == font->EllipsisChar && font->EllipsisAutoBake) if (ImFontGlyph *glyph = ImFontAtlasBuildSetupFontBakedEllipsis(atlas, baked)) return glyph; // Call backend char *loader_user_data_p = (char *)baked->FontLoaderDatas; int src_n = 0; for (ImFontConfig *src : font->Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (!src->GlyphExcludeRanges || ImFontAtlasBuildAcceptCodepointForSource(src, codepoint)) { ImFontGlyph glyph_buf; if (loader->FontBakedLoadGlyph(atlas, src, baked, loader_user_data_p, codepoint, &glyph_buf)) { // FIXME: Add hooks for e.g. #7962 glyph_buf.Codepoint = src_codepoint; glyph_buf.SourceIdx = src_n; return ImFontAtlasBakedAddFontGlyph(atlas, baked, src, &glyph_buf); } } loader_user_data_p += loader->FontBakedSrcLoaderDataSize; src_n++; } // Lazily load fallback glyph if (baked->LockLoadingFallback) return NULL; if (baked->FallbackGlyphIndex == -1) ImFontAtlasBuildSetupFontBakedFallback(baked); // Mark index as not found, so we don't attempt the search twice ImFontBaked_BuildGrowIndex(baked, codepoint + 1); baked->IndexAdvanceX[codepoint] = baked->FallbackAdvanceX; baked->IndexLookup[codepoint] = IM_FONTGLYPH_INDEX_NOT_FOUND; return NULL; } // The point of this indirection is to not be inlined in debug mode in order to not bloat inner loop.b IM_MSVC_RUNTIME_CHECKS_OFF static float BuildLoadGlyphGetAdvanceOrFallback(ImFontBaked *baked, unsigned int codepoint) { ImFontGlyph *glyph = ImFontBaked_BuildLoadGlyph(baked, (ImWchar)codepoint); return glyph ? glyph->AdvanceX : baked->FallbackAdvanceX; } IM_MSVC_RUNTIME_CHECKS_RESTORE #ifndef IMGUI_DISABLE_DEBUG_TOOLS void ImFontAtlasDebugLogTextureRequests(ImFontAtlas *atlas) { // [DEBUG] Log texture update requests ImGuiContext &g = *GImGui; IM_UNUSED(g); for (ImTextureData *tex : atlas->TexList) { if ((g.IO.BackendFlags & ImGuiBackendFlags_RendererHasTextures) == 0) IM_ASSERT(tex->Updates.Size == 0); if (tex->Status == ImTextureStatus_WantCreate) IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: create %dx%d\n", tex->UniqueID, tex->Width, tex->Height); else if (tex->Status == ImTextureStatus_WantDestroy) IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: destroy %dx%d, texid=0x%" IM_PRIX64 ", backend_data=%p\n", tex->UniqueID, tex->Width, tex->Height, tex->TexID, tex->BackendUserData); else if (tex->Status == ImTextureStatus_WantUpdates) { IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: update %d regions, texid=0x%" IM_PRIX64 ", backend_data=0x%" IM_PRIX64 "\n", tex->UniqueID, tex->Updates.Size, tex->TexID, (ImU64)(intptr_t)tex->BackendUserData); for (const ImTextureRect &r : tex->Updates) { IM_UNUSED(r); IM_ASSERT(r.x >= 0 && r.y >= 0); IM_ASSERT(r.x + r.w <= tex->Width && r.y + r.h <= tex->Height); // In theory should subtract PackPadding but it's currently part of // atlas and mid-frame change would wreck assert. // IMGUI_DEBUG_LOG_FONT("[font] Texture #%03d: update (% 4d..%-4d)->(% 4d..%-4d), texid=0x%" IM_PRIX64 // ", backend_data=0x%" IM_PRIX64 "\n", tex->UniqueID, r.x, r.y, r.x + r.w, r.y + r.h, tex->TexID, // (ImU64)(intptr_t)tex->BackendUserData); } } } } #endif //------------------------------------------------------------------------- // [SECTION] ImFontAtlas: backend for stb_truetype //------------------------------------------------------------------------- // (imstb_truetype.h in included near the top of this file, when IMGUI_ENABLE_STB_TRUETYPE is set) //------------------------------------------------------------------------- #ifdef IMGUI_ENABLE_STB_TRUETYPE // One for each ConfigData struct ImGui_ImplStbTrueType_FontSrcData { stbtt_fontinfo FontInfo; float ScaleFactor; }; static bool ImGui_ImplStbTrueType_FontSrcInit(ImFontAtlas *atlas, ImFontConfig *src) { IM_UNUSED(atlas); ImGui_ImplStbTrueType_FontSrcData *bd_font_data = IM_NEW(ImGui_ImplStbTrueType_FontSrcData); IM_ASSERT(src->FontLoaderData == NULL); // Initialize helper structure for font loading and verify that the TTF/OTF data is correct const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char *)src->FontData, src->FontNo); if (font_offset < 0) { IM_DELETE(bd_font_data); IM_ASSERT_USER_ERROR(0, "stbtt_GetFontOffsetForIndex(): FontData is incorrect, or FontNo cannot be found."); return false; } if (!stbtt_InitFont(&bd_font_data->FontInfo, (unsigned char *)src->FontData, font_offset)) { IM_DELETE(bd_font_data); IM_ASSERT_USER_ERROR( 0, "stbtt_InitFont(): failed to parse FontData. It is correct and complete? Check FontDataSize."); return false; } src->FontLoaderData = bd_font_data; if (src->MergeMode && src->SizePixels == 0.0f) src->SizePixels = src->DstFont->Sources[0]->SizePixels; if (src->SizePixels >= 0.0f) bd_font_data->ScaleFactor = stbtt_ScaleForPixelHeight(&bd_font_data->FontInfo, 1.0f); else bd_font_data->ScaleFactor = stbtt_ScaleForMappingEmToPixels(&bd_font_data->FontInfo, 1.0f); if (src->MergeMode && src->SizePixels != 0.0f) bd_font_data->ScaleFactor *= src->SizePixels / src->DstFont->Sources[0]->SizePixels; // FIXME-NEWATLAS: Should tidy up that a bit return true; } static void ImGui_ImplStbTrueType_FontSrcDestroy(ImFontAtlas *atlas, ImFontConfig *src) { IM_UNUSED(atlas); ImGui_ImplStbTrueType_FontSrcData *bd_font_data = (ImGui_ImplStbTrueType_FontSrcData *)src->FontLoaderData; IM_DELETE(bd_font_data); src->FontLoaderData = NULL; } static bool ImGui_ImplStbTrueType_FontSrcContainsGlyph(ImFontAtlas *atlas, ImFontConfig *src, ImWchar codepoint) { IM_UNUSED(atlas); ImGui_ImplStbTrueType_FontSrcData *bd_font_data = (ImGui_ImplStbTrueType_FontSrcData *)src->FontLoaderData; IM_ASSERT(bd_font_data != NULL); int glyph_index = stbtt_FindGlyphIndex(&bd_font_data->FontInfo, (int)codepoint); return glyph_index != 0; } static bool ImGui_ImplStbTrueType_FontBakedInit(ImFontAtlas *atlas, ImFontConfig *src, ImFontBaked *baked, void *) { IM_UNUSED(atlas); ImGui_ImplStbTrueType_FontSrcData *bd_font_data = (ImGui_ImplStbTrueType_FontSrcData *)src->FontLoaderData; if (src->MergeMode == false) { // FIXME-NEWFONTS: reevaluate how to use sizing metrics // FIXME-NEWFONTS: make use of line gap value float scale_for_layout = bd_font_data->ScaleFactor * baked->Size; int unscaled_ascent, unscaled_descent, unscaled_line_gap; stbtt_GetFontVMetrics(&bd_font_data->FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap); baked->Ascent = ImCeil(unscaled_ascent * scale_for_layout); baked->Descent = ImFloor(unscaled_descent * scale_for_layout); } return true; } static bool ImGui_ImplStbTrueType_FontBakedLoadGlyph(ImFontAtlas *atlas, ImFontConfig *src, ImFontBaked *baked, void *, ImWchar codepoint, ImFontGlyph *out_glyph) { // Search for first font which has the glyph ImGui_ImplStbTrueType_FontSrcData *bd_font_data = (ImGui_ImplStbTrueType_FontSrcData *)src->FontLoaderData; IM_ASSERT(bd_font_data); int glyph_index = stbtt_FindGlyphIndex(&bd_font_data->FontInfo, (int)codepoint); if (glyph_index == 0) return false; // Fonts unit to pixels int oversample_h, oversample_v; ImFontAtlasBuildGetOversampleFactors(src, baked, &oversample_h, &oversample_v); const float scale_for_layout = bd_font_data->ScaleFactor * baked->Size; const float rasterizer_density = src->RasterizerDensity * baked->RasterizerDensity; const float scale_for_raster_x = bd_font_data->ScaleFactor * baked->Size * rasterizer_density * oversample_h; const float scale_for_raster_y = bd_font_data->ScaleFactor * baked->Size * rasterizer_density * oversample_v; // Obtain size and advance int x0, y0, x1, y1; int advance, lsb; stbtt_GetGlyphBitmapBoxSubpixel(&bd_font_data->FontInfo, glyph_index, scale_for_raster_x, scale_for_raster_y, 0, 0, &x0, &y0, &x1, &y1); stbtt_GetGlyphHMetrics(&bd_font_data->FontInfo, glyph_index, &advance, &lsb); const bool is_visible = (x0 != x1 && y0 != y1); // Prepare glyph out_glyph->Codepoint = codepoint; out_glyph->AdvanceX = advance * scale_for_layout; // Pack and retrieve position inside texture atlas // (generally based on stbtt_PackFontRangesRenderIntoRects) if (is_visible) { const int w = (x1 - x0 + oversample_h - 1); const int h = (y1 - y0 + oversample_v - 1); ImFontAtlasRectId pack_id = ImFontAtlasPackAddRect(atlas, w, h); if (pack_id == ImFontAtlasRectId_Invalid) { // Pathological out of memory case (TexMaxWidth/TexMaxHeight set too small?) IM_ASSERT(pack_id != ImFontAtlasRectId_Invalid && "Out of texture memory."); return false; } ImTextureRect *r = ImFontAtlasPackGetRect(atlas, pack_id); // Render stbtt_GetGlyphBitmapBox(&bd_font_data->FontInfo, glyph_index, scale_for_raster_x, scale_for_raster_y, &x0, &y0, &x1, &y1); ImFontAtlasBuilder *builder = atlas->Builder; builder->TempBuffer.resize(w * h * 1); unsigned char *bitmap_pixels = builder->TempBuffer.Data; memset(bitmap_pixels, 0, w * h * 1); stbtt_MakeGlyphBitmapSubpixel(&bd_font_data->FontInfo, bitmap_pixels, r->w - oversample_h + 1, r->h - oversample_v + 1, w, scale_for_raster_x, scale_for_raster_y, 0, 0, glyph_index); // Oversampling // (those functions conveniently assert if pixels are not cleared, which is another safety layer) if (oversample_h > 1) stbtt__h_prefilter(bitmap_pixels, r->w, r->h, r->w, oversample_h); if (oversample_v > 1) stbtt__v_prefilter(bitmap_pixels, r->w, r->h, r->w, oversample_v); const float ref_size = baked->ContainerFont->Sources[0]->SizePixels; const float offsets_scale = (ref_size != 0.0f) ? (baked->Size / ref_size) : 1.0f; float font_off_x = (src->GlyphOffset.x * offsets_scale); float font_off_y = (src->GlyphOffset.y * offsets_scale); if (src->PixelSnapH) // Snap scaled offset. This is to mitigate backward compatibility issues for GlyphOffset, // but a better design would be welcome. font_off_x = IM_ROUND(font_off_x); if (src->PixelSnapV) font_off_y = IM_ROUND(font_off_y); font_off_x += stbtt__oversample_shift(oversample_h); font_off_y += stbtt__oversample_shift(oversample_v) + IM_ROUND(baked->Ascent); float recip_h = 1.0f / (oversample_h * rasterizer_density); float recip_v = 1.0f / (oversample_v * rasterizer_density); // Register glyph // r->x r->y are coordinates inside texture (in pixels) // glyph.X0, glyph.Y0 are drawing coordinates from base text position, and accounting for oversampling. out_glyph->X0 = x0 * recip_h + font_off_x; out_glyph->Y0 = y0 * recip_v + font_off_y; out_glyph->X1 = (x0 + (int)r->w) * recip_h + font_off_x; out_glyph->Y1 = (y0 + (int)r->h) * recip_v + font_off_y; out_glyph->Visible = true; out_glyph->PackId = pack_id; ImFontAtlasBakedSetFontGlyphBitmap(atlas, baked, src, out_glyph, r, bitmap_pixels, ImTextureFormat_Alpha8, w); } return true; } const ImFontLoader *ImFontAtlasGetFontLoaderForStbTruetype() { static ImFontLoader loader; loader.Name = "stb_truetype"; loader.FontSrcInit = ImGui_ImplStbTrueType_FontSrcInit; loader.FontSrcDestroy = ImGui_ImplStbTrueType_FontSrcDestroy; loader.FontSrcContainsGlyph = ImGui_ImplStbTrueType_FontSrcContainsGlyph; loader.FontBakedInit = ImGui_ImplStbTrueType_FontBakedInit; loader.FontBakedDestroy = NULL; loader.FontBakedLoadGlyph = ImGui_ImplStbTrueType_FontBakedLoadGlyph; return &loader; } #endif // IMGUI_ENABLE_STB_TRUETYPE //------------------------------------------------------------------------- // [SECTION] ImFontAtlas: glyph ranges helpers //------------------------------------------------------------------------- // - GetGlyphRangesDefault() // Obsolete functions since 1.92: // - GetGlyphRangesGreek() // - GetGlyphRangesKorean() // - GetGlyphRangesChineseFull() // - GetGlyphRangesChineseSimplifiedCommon() // - GetGlyphRangesJapanese() // - GetGlyphRangesCyrillic() // - GetGlyphRangesThai() // - GetGlyphRangesVietnamese() //----------------------------------------------------------------------------- // Retrieve list of range (2 int per range, values are inclusive) const ImWchar *ImFontAtlas::GetGlyphRangesDefault() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0, }; return &ranges[0]; } #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS const ImWchar *ImFontAtlas::GetGlyphRangesGreek() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x0370, 0x03FF, // Greek and Coptic 0, }; return &ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesKorean() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x3131, 0x3163, // Korean alphabets 0xAC00, 0xD7A3, // Korean characters 0xFFFD, 0xFFFD, // Invalid 0, }; return &ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesChineseFull() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x2000, 0x206F, // General Punctuation 0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana 0x31F0, 0x31FF, // Katakana Phonetic Extensions 0xFF00, 0xFFEF, // Half-width characters 0xFFFD, 0xFFFD, // Invalid 0x4e00, 0x9FAF, // CJK Ideograms 0, }; return &ranges[0]; } static void UnpackAccumulativeOffsetsIntoRanges(int base_codepoint, const short *accumulative_offsets, int accumulative_offsets_count, ImWchar *out_ranges) { for (int n = 0; n < accumulative_offsets_count; n++, out_ranges += 2) { out_ranges[0] = out_ranges[1] = (ImWchar)(base_codepoint + accumulative_offsets[n]); base_codepoint += accumulative_offsets[n]; } out_ranges[0] = 0; } const ImWchar *ImFontAtlas::GetGlyphRangesChineseSimplifiedCommon() { // Store 2500 regularly used characters for Simplified Chinese. // Sourced from // https://zh.wiktionary.org/wiki/%E9%99%84%E5%BD%95:%E7%8E%B0%E4%BB%A3%E6%B1%89%E8%AF%AD%E5%B8%B8%E7%94%A8%E5%AD%97%E8%A1%A8 // This table covers 97.97% of all characters used during the month in July, 1987. // You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or // adding new characters. (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding // is designed to helps us compact the source code size.) static const short accumulative_offsets_from_0x4E00[] = { 0, 1, 2, 4, 1, 1, 1, 1, 2, 1, 3, 2, 1, 2, 2, 1, 1, 1, 1, 1, 5, 2, 1, 2, 3, 3, 3, 2, 2, 4, 1, 1, 1, 2, 1, 5, 2, 3, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 4, 1, 1, 1, 1, 5, 10, 1, 2, 19, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 5, 1, 6, 3, 2, 1, 2, 2, 1, 1, 1, 4, 8, 5, 1, 1, 4, 1, 1, 3, 1, 2, 1, 5, 1, 2, 1, 1, 1, 10, 1, 1, 5, 2, 4, 6, 1, 4, 2, 2, 2, 12, 2, 1, 1, 6, 1, 1, 1, 4, 1, 1, 4, 6, 5, 1, 4, 2, 2, 4, 10, 7, 1, 1, 4, 2, 4, 2, 1, 4, 3, 6, 10, 12, 5, 7, 2, 14, 2, 9, 1, 1, 6, 7, 10, 4, 7, 13, 1, 5, 4, 8, 4, 1, 1, 2, 28, 5, 6, 1, 1, 5, 2, 5, 20, 2, 2, 9, 8, 11, 2, 9, 17, 1, 8, 6, 8, 27, 4, 6, 9, 20, 11, 27, 6, 68, 2, 2, 1, 1, 1, 2, 1, 2, 2, 7, 6, 11, 3, 3, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1, 3, 1, 1, 8, 3, 4, 1, 5, 7, 2, 1, 4, 4, 8, 4, 2, 1, 2, 1, 1, 4, 5, 6, 3, 6, 2, 12, 3, 1, 3, 9, 2, 4, 3, 4, 1, 5, 3, 3, 1, 3, 7, 1, 5, 1, 1, 1, 1, 2, 3, 4, 5, 2, 3, 2, 6, 1, 1, 2, 1, 7, 1, 7, 3, 4, 5, 15, 2, 2, 1, 5, 3, 22, 19, 2, 1, 1, 1, 1, 2, 5, 1, 1, 1, 6, 1, 1, 12, 8, 2, 9, 18, 22, 4, 1, 1, 5, 1, 16, 1, 2, 7, 10, 15, 1, 1, 6, 2, 4, 1, 2, 4, 1, 6, 1, 1, 3, 2, 4, 1, 6, 4, 5, 1, 2, 1, 1, 2, 1, 10, 3, 1, 3, 2, 1, 9, 3, 2, 5, 7, 2, 19, 4, 3, 6, 1, 1, 1, 1, 1, 4, 3, 2, 1, 1, 1, 2, 5, 3, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 3, 1, 1, 1, 3, 7, 1, 4, 1, 1, 2, 1, 1, 2, 1, 2, 4, 4, 3, 8, 1, 1, 1, 2, 1, 3, 5, 1, 3, 1, 3, 4, 6, 2, 2, 14, 4, 6, 6, 11, 9, 1, 15, 3, 1, 28, 5, 2, 5, 5, 3, 1, 3, 4, 5, 4, 6, 14, 3, 2, 3, 5, 21, 2, 7, 20, 10, 1, 2, 19, 2, 4, 28, 28, 2, 3, 2, 1, 14, 4, 1, 26, 28, 42, 12, 40, 3, 52, 79, 5, 14, 17, 3, 2, 2, 11, 3, 4, 6, 3, 1, 8, 2, 23, 4, 5, 8, 10, 4, 2, 7, 3, 5, 1, 1, 6, 3, 1, 2, 2, 2, 5, 28, 1, 1, 7, 7, 20, 5, 3, 29, 3, 17, 26, 1, 8, 4, 27, 3, 6, 11, 23, 5, 3, 4, 6, 13, 24, 16, 6, 5, 10, 25, 35, 7, 3, 2, 3, 3, 14, 3, 6, 2, 6, 1, 4, 2, 3, 8, 2, 1, 1, 3, 3, 3, 4, 1, 1, 13, 2, 2, 4, 5, 2, 1, 14, 14, 1, 2, 2, 1, 4, 5, 2, 3, 1, 14, 3, 12, 3, 17, 2, 16, 5, 1, 2, 1, 8, 9, 3, 19, 4, 2, 2, 4, 17, 25, 21, 20, 28, 75, 1, 10, 29, 103, 4, 1, 2, 1, 1, 4, 2, 4, 1, 2, 3, 24, 2, 2, 2, 1, 1, 2, 1, 3, 8, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 6, 1, 5, 3, 1, 1, 1, 3, 4, 1, 1, 5, 2, 1, 5, 6, 13, 9, 16, 1, 1, 1, 1, 3, 2, 3, 2, 4, 5, 2, 5, 2, 2, 3, 7, 13, 7, 2, 2, 1, 1, 1, 1, 2, 3, 3, 2, 1, 6, 4, 9, 2, 1, 14, 2, 14, 2, 1, 18, 3, 4, 14, 4, 11, 41, 15, 23, 15, 23, 176, 1, 3, 4, 1, 1, 1, 1, 5, 3, 1, 2, 3, 7, 3, 1, 1, 2, 1, 2, 4, 4, 6, 2, 4, 1, 9, 7, 1, 10, 5, 8, 16, 29, 1, 1, 2, 2, 3, 1, 3, 5, 2, 4, 5, 4, 1, 1, 2, 2, 3, 3, 7, 1, 6, 10, 1, 17, 1, 44, 4, 6, 2, 1, 1, 6, 5, 4, 2, 10, 1, 6, 9, 2, 8, 1, 24, 1, 2, 13, 7, 8, 8, 2, 1, 4, 1, 3, 1, 3, 3, 5, 2, 5, 10, 9, 4, 9, 12, 2, 1, 6, 1, 10, 1, 1, 7, 7, 4, 10, 8, 3, 1, 13, 4, 3, 1, 6, 1, 3, 5, 2, 1, 2, 17, 16, 5, 2, 16, 6, 1, 4, 2, 1, 3, 3, 6, 8, 5, 11, 11, 1, 3, 3, 2, 4, 6, 10, 9, 5, 7, 4, 7, 4, 7, 1, 1, 4, 2, 1, 3, 6, 8, 7, 1, 6, 11, 5, 5, 3, 24, 9, 4, 2, 7, 13, 5, 1, 8, 82, 16, 61, 1, 1, 1, 4, 2, 2, 16, 10, 3, 8, 1, 1, 6, 4, 2, 1, 3, 1, 1, 1, 4, 3, 8, 4, 2, 2, 1, 1, 1, 1, 1, 6, 3, 5, 1, 1, 4, 6, 9, 2, 1, 1, 1, 2, 1, 7, 2, 1, 6, 1, 5, 4, 4, 3, 1, 8, 1, 3, 3, 1, 3, 2, 2, 2, 2, 3, 1, 6, 1, 2, 1, 2, 1, 3, 7, 1, 8, 2, 1, 2, 1, 5, 2, 5, 3, 5, 10, 1, 2, 1, 1, 3, 2, 5, 11, 3, 9, 3, 5, 1, 1, 5, 9, 1, 2, 1, 5, 7, 9, 9, 8, 1, 3, 3, 3, 6, 8, 2, 3, 2, 1, 1, 32, 6, 1, 2, 15, 9, 3, 7, 13, 1, 3, 10, 13, 2, 14, 1, 13, 10, 2, 1, 3, 10, 4, 15, 2, 15, 15, 10, 1, 3, 9, 6, 9, 32, 25, 26, 47, 7, 3, 2, 3, 1, 6, 3, 4, 3, 2, 8, 5, 4, 1, 9, 4, 2, 2, 19, 10, 6, 2, 3, 8, 1, 2, 2, 4, 2, 1, 9, 4, 4, 4, 6, 4, 8, 9, 2, 3, 1, 1, 1, 1, 3, 5, 5, 1, 3, 8, 4, 6, 2, 1, 4, 12, 1, 5, 3, 7, 13, 2, 5, 8, 1, 6, 1, 2, 5, 14, 6, 1, 5, 2, 4, 8, 15, 5, 1, 23, 6, 62, 2, 10, 1, 1, 8, 1, 2, 2, 10, 4, 2, 2, 9, 2, 1, 1, 3, 2, 3, 1, 5, 3, 3, 2, 1, 3, 8, 1, 1, 1, 11, 3, 1, 1, 4, 3, 7, 1, 14, 1, 2, 3, 12, 5, 2, 5, 1, 6, 7, 5, 7, 14, 11, 1, 3, 1, 8, 9, 12, 2, 1, 11, 8, 4, 4, 2, 6, 10, 9, 13, 1, 1, 3, 1, 5, 1, 3, 2, 4, 4, 1, 18, 2, 3, 14, 11, 4, 29, 4, 2, 7, 1, 3, 13, 9, 2, 2, 5, 3, 5, 20, 7, 16, 8, 5, 72, 34, 6, 4, 22, 12, 12, 28, 45, 36, 9, 7, 39, 9, 191, 1, 1, 1, 4, 11, 8, 4, 9, 2, 3, 22, 1, 1, 1, 1, 4, 17, 1, 7, 7, 1, 11, 31, 10, 2, 4, 8, 2, 3, 2, 1, 4, 2, 16, 4, 32, 2, 3, 19, 13, 4, 9, 1, 5, 2, 14, 8, 1, 1, 3, 6, 19, 6, 5, 1, 16, 6, 2, 10, 8, 5, 1, 2, 3, 1, 5, 5, 1, 11, 6, 6, 1, 3, 3, 2, 6, 3, 8, 1, 1, 4, 10, 7, 5, 7, 7, 5, 8, 9, 2, 1, 3, 4, 1, 1, 3, 1, 3, 3, 2, 6, 16, 1, 4, 6, 3, 1, 10, 6, 1, 3, 15, 2, 9, 2, 10, 25, 13, 9, 16, 6, 2, 2, 10, 11, 4, 3, 9, 1, 2, 6, 6, 5, 4, 30, 40, 1, 10, 7, 12, 14, 33, 6, 3, 6, 7, 3, 1, 3, 1, 11, 14, 4, 9, 5, 12, 11, 49, 18, 51, 31, 140, 31, 2, 2, 1, 5, 1, 8, 1, 10, 1, 4, 4, 3, 24, 1, 10, 1, 3, 6, 6, 16, 3, 4, 5, 2, 1, 4, 2, 57, 10, 6, 22, 2, 22, 3, 7, 22, 6, 10, 11, 36, 18, 16, 33, 36, 2, 5, 5, 1, 1, 1, 4, 10, 1, 4, 13, 2, 7, 5, 2, 9, 3, 4, 1, 7, 43, 3, 7, 3, 9, 14, 7, 9, 1, 11, 1, 1, 3, 7, 4, 18, 13, 1, 14, 1, 3, 6, 10, 73, 2, 2, 30, 6, 1, 11, 18, 19, 13, 22, 3, 46, 42, 37, 89, 7, 3, 16, 34, 2, 2, 3, 9, 1, 7, 1, 1, 1, 2, 2, 4, 10, 7, 3, 10, 3, 9, 5, 28, 9, 2, 6, 13, 7, 3, 1, 3, 10, 2, 7, 2, 11, 3, 6, 21, 54, 85, 2, 1, 4, 2, 2, 1, 39, 3, 21, 2, 2, 5, 1, 1, 1, 4, 1, 1, 3, 4, 15, 1, 3, 2, 4, 4, 2, 3, 8, 2, 20, 1, 8, 7, 13, 4, 1, 26, 6, 2, 9, 34, 4, 21, 52, 10, 4, 4, 1, 5, 12, 2, 11, 1, 7, 2, 30, 12, 44, 2, 30, 1, 1, 3, 6, 16, 9, 17, 39, 82, 2, 2, 24, 7, 1, 7, 3, 16, 9, 14, 44, 2, 1, 2, 1, 2, 3, 5, 2, 4, 1, 6, 7, 5, 3, 2, 6, 1, 11, 5, 11, 2, 1, 18, 19, 8, 1, 3, 24, 29, 2, 1, 3, 5, 2, 2, 1, 13, 6, 5, 1, 46, 11, 3, 5, 1, 1, 5, 8, 2, 10, 6, 12, 6, 3, 7, 11, 2, 4, 16, 13, 2, 5, 1, 1, 2, 2, 5, 2, 28, 5, 2, 23, 10, 8, 4, 4, 22, 39, 95, 38, 8, 14, 9, 5, 1, 13, 5, 4, 3, 13, 12, 11, 1, 9, 1, 27, 37, 2, 5, 4, 4, 63, 211, 95, 2, 2, 2, 1, 3, 5, 2, 1, 1, 2, 2, 1, 1, 1, 3, 2, 4, 1, 2, 1, 1, 5, 2, 2, 1, 1, 2, 3, 1, 3, 1, 1, 1, 3, 1, 4, 2, 1, 3, 6, 1, 1, 3, 7, 15, 5, 3, 2, 5, 3, 9, 11, 4, 2, 22, 1, 6, 3, 8, 7, 1, 4, 28, 4, 16, 3, 3, 25, 4, 4, 27, 27, 1, 4, 1, 2, 2, 7, 1, 3, 5, 2, 28, 8, 2, 14, 1, 8, 6, 16, 25, 3, 3, 3, 14, 3, 3, 1, 1, 2, 1, 4, 6, 3, 8, 4, 1, 1, 1, 2, 3, 6, 10, 6, 2, 3, 18, 3, 2, 5, 5, 4, 3, 1, 5, 2, 5, 4, 23, 7, 6, 12, 6, 4, 17, 11, 9, 5, 1, 1, 10, 5, 12, 1, 1, 11, 26, 33, 7, 3, 6, 1, 17, 7, 1, 5, 12, 1, 11, 2, 4, 1, 8, 14, 17, 23, 1, 2, 1, 7, 8, 16, 11, 9, 6, 5, 2, 6, 4, 16, 2, 8, 14, 1, 11, 8, 9, 1, 1, 1, 9, 25, 4, 11, 19, 7, 2, 15, 2, 12, 8, 52, 7, 5, 19, 2, 16, 4, 36, 8, 1, 16, 8, 24, 26, 4, 6, 2, 9, 5, 4, 36, 3, 28, 12, 25, 15, 37, 27, 17, 12, 59, 38, 5, 32, 127, 1, 2, 9, 17, 14, 4, 1, 2, 1, 1, 8, 11, 50, 4, 14, 2, 19, 16, 4, 17, 5, 4, 5, 26, 12, 45, 2, 23, 45, 104, 30, 12, 8, 3, 10, 2, 2, 3, 3, 1, 4, 20, 7, 2, 9, 6, 15, 2, 20, 1, 3, 16, 4, 11, 15, 6, 134, 2, 5, 59, 1, 2, 2, 2, 1, 9, 17, 3, 26, 137, 10, 211, 59, 1, 2, 4, 1, 4, 1, 1, 1, 2, 6, 2, 3, 1, 1, 2, 3, 2, 3, 1, 3, 4, 4, 2, 3, 3, 1, 4, 3, 1, 7, 2, 2, 3, 1, 2, 1, 3, 3, 3, 2, 2, 3, 2, 1, 3, 14, 6, 1, 3, 2, 9, 6, 15, 27, 9, 34, 145, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 3, 1, 2, 1, 1, 1, 2, 3, 5, 8, 3, 5, 2, 4, 1, 3, 2, 2, 2, 12, 4, 1, 1, 1, 10, 4, 5, 1, 20, 4, 16, 1, 15, 9, 5, 12, 2, 9, 2, 5, 4, 2, 26, 19, 7, 1, 26, 4, 30, 12, 15, 42, 1, 6, 8, 172, 1, 1, 4, 2, 1, 1, 11, 2, 2, 4, 2, 1, 2, 1, 10, 8, 1, 2, 1, 4, 5, 1, 2, 5, 1, 8, 4, 1, 3, 4, 2, 1, 6, 2, 1, 3, 4, 1, 2, 1, 1, 1, 1, 12, 5, 7, 2, 4, 3, 1, 1, 1, 3, 3, 6, 1, 2, 2, 3, 3, 3, 2, 1, 2, 12, 14, 11, 6, 6, 4, 12, 2, 8, 1, 7, 10, 1, 35, 7, 4, 13, 15, 4, 3, 23, 21, 28, 52, 5, 26, 5, 6, 1, 7, 10, 2, 7, 53, 3, 2, 1, 1, 1, 2, 163, 532, 1, 10, 11, 1, 3, 3, 4, 8, 2, 8, 6, 2, 2, 23, 22, 4, 2, 2, 4, 2, 1, 3, 1, 3, 3, 5, 9, 8, 2, 1, 2, 8, 1, 10, 2, 12, 21, 20, 15, 105, 2, 3, 1, 1, 3, 2, 3, 1, 1, 2, 5, 1, 4, 15, 11, 19, 1, 1, 1, 1, 5, 4, 5, 1, 1, 2, 5, 3, 5, 12, 1, 2, 5, 1, 11, 1, 1, 15, 9, 1, 4, 5, 3, 26, 8, 2, 1, 3, 1, 1, 15, 19, 2, 12, 1, 2, 5, 2, 7, 2, 19, 2, 20, 6, 26, 7, 5, 2, 2, 7, 34, 21, 13, 70, 2, 128, 1, 1, 2, 1, 1, 2, 1, 1, 3, 2, 2, 2, 15, 1, 4, 1, 3, 4, 42, 10, 6, 1, 49, 85, 8, 1, 2, 1, 1, 4, 4, 2, 3, 6, 1, 5, 7, 4, 3, 211, 4, 1, 2, 1, 2, 5, 1, 2, 4, 2, 2, 6, 5, 6, 10, 3, 4, 48, 100, 6, 2, 16, 296, 5, 27, 387, 2, 2, 3, 7, 16, 8, 5, 38, 15, 39, 21, 9, 10, 3, 7, 59, 13, 27, 21, 47, 5, 21, 6}; static ImWchar base_ranges[] = // not zero-terminated { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x2000, 0x206F, // General Punctuation 0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana 0x31F0, 0x31FF, // Katakana Phonetic Extensions 0xFF00, 0xFFEF, // Half-width characters 0xFFFD, 0xFFFD // Invalid }; static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00) * 2 + 1] = { 0}; if (!full_ranges[0]) { memcpy(full_ranges, base_ranges, sizeof(base_ranges)); UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges)); } return &full_ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesJapanese() { // 2999 ideograms code points for Japanese // - 2136 Joyo (meaning "for regular use" or "for common use") Kanji code points // - 863 Jinmeiyo (meaning "for personal name") Kanji code points // - Sourced from official information provided by the government agencies of Japan: // - List of Joyo Kanji by the Agency for Cultural Affairs // - https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/kanji/ // - List of Jinmeiyo Kanji by the Ministry of Justice // - http://www.moj.go.jp/MINJI/minji86.html // - Available under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0). // - https://creativecommons.org/licenses/by/4.0/legalcode // - You can generate this code by the script at: // - https://github.com/vaiorabbit/everyday_use_kanji // - References: // - List of Joyo Kanji // - (Wikipedia) https://en.wikipedia.org/wiki/List_of_j%C5%8Dy%C5%8D_kanji // - List of Jinmeiyo Kanji // - (Wikipedia) https://en.wikipedia.org/wiki/Jinmeiy%C5%8D_kanji // - Missing 1 Joyo Kanji: U+20B9F (Kun'yomi: Shikaru, On'yomi: Shitsu,shichi), see // https://github.com/ocornut/imgui/pull/3627 for details. You can use ImFontGlyphRangesBuilder to create your own // ranges derived from this, by merging existing ranges or adding new characters. (Stored as accumulative offsets // from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.) static const short accumulative_offsets_from_0x4E00[] = { 0, 1, 2, 4, 1, 1, 1, 1, 2, 1, 3, 3, 2, 2, 1, 5, 3, 5, 7, 5, 6, 1, 2, 1, 7, 2, 6, 3, 1, 8, 1, 1, 4, 1, 1, 18, 2, 11, 2, 6, 2, 1, 2, 1, 5, 1, 2, 1, 3, 1, 2, 1, 2, 3, 3, 1, 1, 2, 3, 1, 1, 1, 12, 7, 9, 1, 4, 5, 1, 1, 2, 1, 10, 1, 1, 9, 2, 2, 4, 5, 6, 9, 3, 1, 1, 1, 1, 9, 3, 18, 5, 2, 2, 2, 2, 1, 6, 3, 7, 1, 1, 1, 1, 2, 2, 4, 2, 1, 23, 2, 10, 4, 3, 5, 2, 4, 10, 2, 4, 13, 1, 6, 1, 9, 3, 1, 1, 6, 6, 7, 6, 3, 1, 2, 11, 3, 2, 2, 3, 2, 15, 2, 2, 5, 4, 3, 6, 4, 1, 2, 5, 2, 12, 16, 6, 13, 9, 13, 2, 1, 1, 7, 16, 4, 7, 1, 19, 1, 5, 1, 2, 2, 7, 7, 8, 2, 6, 5, 4, 9, 18, 7, 4, 5, 9, 13, 11, 8, 15, 2, 1, 1, 1, 2, 1, 2, 2, 1, 2, 2, 8, 2, 9, 3, 3, 1, 1, 4, 4, 1, 1, 1, 4, 9, 1, 4, 3, 5, 5, 2, 7, 5, 3, 4, 8, 2, 1, 13, 2, 3, 3, 1, 14, 1, 1, 4, 5, 1, 3, 6, 1, 5, 2, 1, 1, 3, 3, 3, 3, 1, 1, 2, 7, 6, 6, 7, 1, 4, 7, 6, 1, 1, 1, 1, 1, 12, 3, 3, 9, 5, 2, 6, 1, 5, 6, 1, 2, 3, 18, 2, 4, 14, 4, 1, 3, 6, 1, 1, 6, 3, 5, 5, 3, 2, 2, 2, 2, 12, 3, 1, 4, 2, 3, 2, 3, 11, 1, 7, 4, 1, 2, 1, 3, 17, 1, 9, 1, 24, 1, 1, 4, 2, 2, 4, 1, 2, 7, 1, 1, 1, 3, 1, 2, 2, 4, 15, 1, 1, 2, 1, 1, 2, 1, 5, 2, 5, 20, 2, 5, 9, 1, 10, 8, 7, 6, 1, 1, 1, 1, 1, 1, 6, 2, 1, 2, 8, 1, 1, 1, 1, 5, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 12, 4, 1, 3, 1, 1, 1, 1, 1, 10, 3, 1, 7, 5, 13, 1, 2, 3, 4, 6, 1, 1, 30, 2, 9, 9, 1, 15, 38, 11, 3, 1, 8, 24, 7, 1, 9, 8, 10, 2, 1, 9, 31, 2, 13, 6, 2, 9, 4, 49, 5, 2, 15, 2, 1, 10, 2, 1, 1, 1, 2, 2, 6, 15, 30, 35, 3, 14, 18, 8, 1, 16, 10, 28, 12, 19, 45, 38, 1, 3, 2, 3, 13, 2, 1, 7, 3, 6, 5, 3, 4, 3, 1, 5, 7, 8, 1, 5, 3, 18, 5, 3, 6, 1, 21, 4, 24, 9, 24, 40, 3, 14, 3, 21, 3, 2, 1, 2, 4, 2, 3, 1, 15, 15, 6, 5, 1, 1, 3, 1, 5, 6, 1, 9, 7, 3, 3, 2, 1, 4, 3, 8, 21, 5, 16, 4, 5, 2, 10, 11, 11, 3, 6, 3, 2, 9, 3, 6, 13, 1, 2, 1, 1, 1, 1, 11, 12, 6, 6, 1, 4, 2, 6, 5, 2, 1, 1, 3, 3, 6, 13, 3, 1, 1, 5, 1, 2, 3, 3, 14, 2, 1, 2, 2, 2, 5, 1, 9, 5, 1, 1, 6, 12, 3, 12, 3, 4, 13, 2, 14, 2, 8, 1, 17, 5, 1, 16, 4, 2, 2, 21, 8, 9, 6, 23, 20, 12, 25, 19, 9, 38, 8, 3, 21, 40, 25, 33, 13, 4, 3, 1, 4, 1, 2, 4, 1, 2, 5, 26, 2, 1, 1, 2, 1, 3, 6, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 9, 2, 3, 1, 1, 1, 3, 6, 3, 2, 1, 1, 6, 6, 1, 8, 2, 2, 2, 1, 4, 1, 2, 3, 2, 7, 3, 2, 4, 1, 2, 1, 2, 2, 1, 1, 1, 1, 1, 3, 1, 2, 5, 4, 10, 9, 4, 9, 1, 1, 1, 1, 1, 1, 5, 3, 2, 1, 6, 4, 9, 6, 1, 10, 2, 31, 17, 8, 3, 7, 5, 40, 1, 7, 7, 1, 6, 5, 2, 10, 7, 8, 4, 15, 39, 25, 6, 28, 47, 18, 10, 7, 1, 3, 1, 1, 2, 1, 1, 1, 3, 3, 3, 1, 1, 1, 3, 4, 2, 1, 4, 1, 3, 6, 10, 7, 8, 6, 2, 2, 1, 3, 3, 2, 5, 8, 7, 9, 12, 2, 15, 1, 1, 4, 1, 2, 1, 1, 1, 3, 2, 1, 3, 3, 5, 6, 2, 3, 2, 10, 1, 4, 2, 8, 1, 1, 1, 11, 6, 1, 21, 4, 16, 3, 1, 3, 1, 4, 2, 3, 6, 5, 1, 3, 1, 1, 3, 3, 4, 6, 1, 1, 10, 4, 2, 7, 10, 4, 7, 4, 2, 9, 4, 3, 1, 1, 1, 4, 1, 8, 3, 4, 1, 3, 1, 6, 1, 4, 2, 1, 4, 7, 2, 1, 8, 1, 4, 5, 1, 1, 2, 2, 4, 6, 2, 7, 1, 10, 1, 1, 3, 4, 11, 10, 8, 21, 4, 6, 1, 3, 5, 2, 1, 2, 28, 5, 5, 2, 3, 13, 1, 2, 3, 1, 4, 2, 1, 5, 20, 3, 8, 11, 1, 3, 3, 3, 1, 8, 10, 9, 2, 10, 9, 2, 3, 1, 1, 2, 4, 1, 8, 3, 6, 1, 7, 8, 6, 11, 1, 4, 29, 8, 4, 3, 1, 2, 7, 13, 1, 4, 1, 6, 2, 6, 12, 12, 2, 20, 3, 2, 3, 6, 4, 8, 9, 2, 7, 34, 5, 1, 18, 6, 1, 1, 4, 4, 5, 7, 9, 1, 2, 2, 4, 3, 4, 1, 7, 2, 2, 2, 6, 2, 3, 25, 5, 3, 6, 1, 4, 6, 7, 4, 2, 1, 4, 2, 13, 6, 4, 4, 3, 1, 5, 3, 4, 4, 3, 2, 1, 1, 4, 1, 2, 1, 1, 3, 1, 11, 1, 6, 3, 1, 7, 3, 6, 2, 8, 8, 6, 9, 3, 4, 11, 3, 2, 10, 12, 2, 5, 11, 1, 6, 4, 5, 3, 1, 8, 5, 4, 6, 6, 3, 5, 1, 1, 3, 2, 1, 2, 2, 6, 17, 12, 1, 10, 1, 6, 12, 1, 6, 6, 19, 9, 6, 16, 1, 13, 4, 4, 15, 7, 17, 6, 11, 9, 15, 12, 6, 7, 2, 1, 2, 2, 15, 9, 3, 21, 4, 6, 49, 18, 7, 3, 2, 3, 1, 6, 8, 2, 2, 6, 2, 9, 1, 3, 6, 4, 4, 1, 2, 16, 2, 5, 2, 1, 6, 2, 3, 5, 3, 1, 2, 5, 1, 2, 1, 9, 3, 1, 8, 6, 4, 8, 11, 3, 1, 1, 1, 1, 3, 1, 13, 8, 4, 1, 3, 2, 2, 1, 4, 1, 11, 1, 5, 2, 1, 5, 2, 5, 8, 6, 1, 1, 7, 4, 3, 8, 3, 2, 7, 2, 1, 5, 1, 5, 2, 4, 7, 6, 2, 8, 5, 1, 11, 4, 5, 3, 6, 18, 1, 2, 13, 3, 3, 1, 21, 1, 1, 4, 1, 4, 1, 1, 1, 8, 1, 2, 2, 7, 1, 2, 4, 2, 2, 9, 2, 1, 1, 1, 4, 3, 6, 3, 12, 5, 1, 1, 1, 5, 6, 3, 2, 4, 8, 2, 2, 4, 2, 7, 1, 8, 9, 5, 2, 3, 2, 1, 3, 2, 13, 7, 14, 6, 5, 1, 1, 2, 1, 4, 2, 23, 2, 1, 1, 6, 3, 1, 4, 1, 15, 3, 1, 7, 3, 9, 14, 1, 3, 1, 4, 1, 1, 5, 8, 1, 3, 8, 3, 8, 15, 11, 4, 14, 4, 4, 2, 5, 5, 1, 7, 1, 6, 14, 7, 7, 8, 5, 15, 4, 8, 6, 5, 6, 2, 1, 13, 1, 20, 15, 11, 9, 2, 5, 6, 2, 11, 2, 6, 2, 5, 1, 5, 8, 4, 13, 19, 25, 4, 1, 1, 11, 1, 34, 2, 5, 9, 14, 6, 2, 2, 6, 1, 1, 14, 1, 3, 14, 13, 1, 6, 12, 21, 14, 14, 6, 32, 17, 8, 32, 9, 28, 1, 2, 4, 11, 8, 3, 1, 14, 2, 5, 15, 1, 1, 1, 1, 3, 6, 4, 1, 3, 4, 11, 3, 1, 1, 11, 30, 1, 5, 1, 4, 1, 5, 8, 1, 1, 3, 2, 4, 3, 17, 35, 2, 6, 12, 17, 3, 1, 6, 2, 1, 1, 12, 2, 7, 3, 3, 2, 1, 16, 2, 8, 3, 6, 5, 4, 7, 3, 3, 8, 1, 9, 8, 5, 1, 2, 1, 3, 2, 8, 1, 2, 9, 12, 1, 1, 2, 3, 8, 3, 24, 12, 4, 3, 7, 5, 8, 3, 3, 3, 3, 3, 3, 1, 23, 10, 3, 1, 2, 2, 6, 3, 1, 16, 1, 16, 22, 3, 10, 4, 11, 6, 9, 7, 7, 3, 6, 2, 2, 2, 4, 10, 2, 1, 1, 2, 8, 7, 1, 6, 4, 1, 3, 3, 3, 5, 10, 12, 12, 2, 3, 12, 8, 15, 1, 1, 16, 6, 6, 1, 5, 9, 11, 4, 11, 4, 2, 6, 12, 1, 17, 5, 13, 1, 4, 9, 5, 1, 11, 2, 1, 8, 1, 5, 7, 28, 8, 3, 5, 10, 2, 17, 3, 38, 22, 1, 2, 18, 12, 10, 4, 38, 18, 1, 4, 44, 19, 4, 1, 8, 4, 1, 12, 1, 4, 31, 12, 1, 14, 7, 75, 7, 5, 10, 6, 6, 13, 3, 2, 11, 11, 3, 2, 5, 28, 15, 6, 18, 18, 5, 6, 4, 3, 16, 1, 7, 18, 7, 36, 3, 5, 3, 1, 7, 1, 9, 1, 10, 7, 2, 4, 2, 6, 2, 9, 7, 4, 3, 32, 12, 3, 7, 10, 2, 23, 16, 3, 1, 12, 3, 31, 4, 11, 1, 3, 8, 9, 5, 1, 30, 15, 6, 12, 3, 2, 2, 11, 19, 9, 14, 2, 6, 2, 3, 19, 13, 17, 5, 3, 3, 25, 3, 14, 1, 1, 1, 36, 1, 3, 2, 19, 3, 13, 36, 9, 13, 31, 6, 4, 16, 34, 2, 5, 4, 2, 3, 3, 5, 1, 1, 1, 4, 3, 1, 17, 3, 2, 3, 5, 3, 1, 3, 2, 3, 5, 6, 3, 12, 11, 1, 3, 1, 2, 26, 7, 12, 7, 2, 14, 3, 3, 7, 7, 11, 25, 25, 28, 16, 4, 36, 1, 2, 1, 6, 2, 1, 9, 3, 27, 17, 4, 3, 4, 13, 4, 1, 3, 2, 2, 1, 10, 4, 2, 4, 6, 3, 8, 2, 1, 18, 1, 1, 24, 2, 2, 4, 33, 2, 3, 63, 7, 1, 6, 40, 7, 3, 4, 4, 2, 4, 15, 18, 1, 16, 1, 1, 11, 2, 41, 14, 1, 3, 18, 13, 3, 2, 4, 16, 2, 17, 7, 15, 24, 7, 18, 13, 44, 2, 2, 3, 6, 1, 1, 7, 5, 1, 7, 1, 4, 3, 3, 5, 10, 8, 2, 3, 1, 8, 1, 1, 27, 4, 2, 1, 12, 1, 2, 1, 10, 6, 1, 6, 7, 5, 2, 3, 7, 11, 5, 11, 3, 6, 6, 2, 3, 15, 4, 9, 1, 1, 2, 1, 2, 11, 2, 8, 12, 8, 5, 4, 2, 3, 1, 5, 2, 2, 1, 14, 1, 12, 11, 4, 1, 11, 17, 17, 4, 3, 2, 5, 5, 7, 3, 1, 5, 9, 9, 8, 2, 5, 6, 6, 13, 13, 2, 1, 2, 6, 1, 2, 2, 49, 4, 9, 1, 2, 10, 16, 7, 8, 4, 3, 2, 23, 4, 58, 3, 29, 1, 14, 19, 19, 11, 11, 2, 7, 5, 1, 3, 4, 6, 2, 18, 5, 12, 12, 17, 17, 3, 3, 2, 4, 1, 6, 2, 3, 4, 3, 1, 1, 1, 1, 5, 1, 1, 9, 1, 3, 1, 3, 6, 1, 8, 1, 1, 2, 6, 4, 14, 3, 1, 4, 11, 4, 1, 3, 32, 1, 2, 4, 13, 4, 1, 2, 4, 2, 1, 3, 1, 11, 1, 4, 2, 1, 4, 4, 6, 3, 5, 1, 6, 5, 7, 6, 3, 23, 3, 5, 3, 5, 3, 3, 13, 3, 9, 10, 1, 12, 10, 2, 3, 18, 13, 7, 160, 52, 4, 2, 2, 3, 2, 14, 5, 4, 12, 4, 6, 4, 1, 20, 4, 11, 6, 2, 12, 27, 1, 4, 1, 2, 2, 7, 4, 5, 2, 28, 3, 7, 25, 8, 3, 19, 3, 6, 10, 2, 2, 1, 10, 2, 5, 4, 1, 3, 4, 1, 5, 3, 2, 6, 9, 3, 6, 2, 16, 3, 3, 16, 4, 5, 5, 3, 2, 1, 2, 16, 15, 8, 2, 6, 21, 2, 4, 1, 22, 5, 8, 1, 1, 21, 11, 2, 1, 11, 11, 19, 13, 12, 4, 2, 3, 2, 3, 6, 1, 8, 11, 1, 4, 2, 9, 5, 2, 1, 11, 2, 9, 1, 1, 2, 14, 31, 9, 3, 4, 21, 14, 4, 8, 1, 7, 2, 2, 2, 5, 1, 4, 20, 3, 3, 4, 10, 1, 11, 9, 8, 2, 1, 4, 5, 14, 12, 14, 2, 17, 9, 6, 31, 4, 14, 1, 20, 13, 26, 5, 2, 7, 3, 6, 13, 2, 4, 2, 19, 6, 2, 2, 18, 9, 3, 5, 12, 12, 14, 4, 6, 2, 3, 6, 9, 5, 22, 4, 5, 25, 6, 4, 8, 5, 2, 6, 27, 2, 35, 2, 16, 3, 7, 8, 8, 6, 6, 5, 9, 17, 2, 20, 6, 19, 2, 13, 3, 1, 1, 1, 4, 17, 12, 2, 14, 7, 1, 4, 18, 12, 38, 33, 2, 10, 1, 1, 2, 13, 14, 17, 11, 50, 6, 33, 20, 26, 74, 16, 23, 45, 50, 13, 38, 33, 6, 6, 7, 4, 4, 2, 1, 3, 2, 5, 8, 7, 8, 9, 3, 11, 21, 9, 13, 1, 3, 10, 6, 7, 1, 2, 2, 18, 5, 5, 1, 9, 9, 2, 68, 9, 19, 13, 2, 5, 1, 4, 4, 7, 4, 13, 3, 9, 10, 21, 17, 3, 26, 2, 1, 5, 2, 4, 5, 4, 1, 7, 4, 7, 3, 4, 2, 1, 6, 1, 1, 20, 4, 1, 9, 2, 2, 1, 3, 3, 2, 3, 2, 1, 1, 1, 20, 2, 3, 1, 6, 2, 3, 6, 2, 4, 8, 1, 3, 2, 10, 3, 5, 3, 4, 4, 3, 4, 16, 1, 6, 1, 10, 2, 4, 2, 1, 1, 2, 10, 11, 2, 2, 3, 1, 24, 31, 4, 10, 10, 2, 5, 12, 16, 164, 15, 4, 16, 7, 9, 15, 19, 17, 1, 2, 1, 1, 5, 1, 1, 1, 1, 1, 3, 1, 4, 3, 1, 3, 1, 3, 1, 2, 1, 1, 3, 3, 7, 2, 8, 1, 2, 2, 2, 1, 3, 4, 3, 7, 8, 12, 92, 2, 10, 3, 1, 3, 14, 5, 25, 16, 42, 4, 7, 7, 4, 2, 21, 5, 27, 26, 27, 21, 25, 30, 31, 2, 1, 5, 13, 3, 22, 5, 6, 6, 11, 9, 12, 1, 5, 9, 7, 5, 5, 22, 60, 3, 5, 13, 1, 1, 8, 1, 1, 3, 3, 2, 1, 9, 3, 3, 18, 4, 1, 2, 3, 7, 6, 3, 1, 2, 3, 9, 1, 3, 1, 3, 2, 1, 3, 1, 1, 1, 2, 1, 11, 3, 1, 6, 9, 1, 3, 2, 3, 1, 2, 1, 5, 1, 1, 4, 3, 4, 1, 2, 2, 4, 4, 1, 7, 2, 1, 2, 2, 3, 5, 13, 18, 3, 4, 14, 9, 9, 4, 16, 3, 7, 5, 8, 2, 6, 48, 28, 3, 1, 1, 4, 2, 14, 8, 2, 9, 2, 1, 15, 2, 4, 3, 2, 10, 16, 12, 8, 7, 1, 1, 3, 1, 1, 1, 2, 7, 4, 1, 6, 4, 38, 39, 16, 23, 7, 15, 15, 3, 2, 12, 7, 21, 37, 27, 6, 5, 4, 8, 2, 10, 8, 8, 6, 5, 1, 2, 1, 3, 24, 1, 16, 17, 9, 23, 10, 17, 6, 1, 51, 55, 44, 13, 294, 9, 3, 6, 2, 4, 2, 2, 15, 1, 1, 1, 13, 21, 17, 68, 14, 8, 9, 4, 1, 4, 9, 3, 11, 7, 1, 1, 1, 5, 6, 3, 2, 1, 1, 1, 2, 3, 8, 1, 2, 2, 4, 1, 5, 5, 2, 1, 4, 3, 7, 13, 4, 1, 4, 1, 3, 1, 1, 1, 5, 5, 10, 1, 6, 1, 5, 2, 1, 5, 2, 4, 1, 4, 5, 7, 3, 18, 2, 9, 11, 32, 4, 3, 3, 2, 4, 7, 11, 16, 9, 11, 8, 13, 38, 32, 8, 4, 2, 1, 1, 2, 1, 2, 4, 4, 1, 1, 1, 4, 1, 21, 3, 11, 1, 16, 1, 1, 6, 1, 3, 2, 4, 9, 8, 57, 7, 44, 1, 3, 3, 13, 3, 10, 1, 1, 7, 5, 2, 7, 21, 47, 63, 3, 15, 4, 7, 1, 16, 1, 1, 2, 8, 2, 3, 42, 15, 4, 1, 29, 7, 22, 10, 3, 78, 16, 12, 20, 18, 4, 67, 11, 5, 1, 3, 15, 6, 21, 31, 32, 27, 18, 13, 71, 35, 5, 142, 4, 10, 1, 2, 50, 19, 33, 16, 35, 37, 16, 19, 27, 7, 1, 133, 19, 1, 4, 8, 7, 20, 1, 4, 4, 1, 10, 3, 1, 6, 1, 2, 51, 5, 40, 15, 24, 43, 22928, 11, 1, 13, 154, 70, 3, 1, 1, 7, 4, 10, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 2, 1, 1, 1, 1, 2, 1, 1, }; static ImWchar base_ranges[] = // not zero-terminated { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana 0x31F0, 0x31FF, // Katakana Phonetic Extensions 0xFF00, 0xFFEF, // Half-width characters 0xFFFD, 0xFFFD // Invalid }; static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00) * 2 + 1] = { 0}; if (!full_ranges[0]) { memcpy(full_ranges, base_ranges, sizeof(base_ranges)); UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges)); } return &full_ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesCyrillic() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin + Latin Supplement 0x0400, 0x052F, // Cyrillic + Cyrillic Supplement 0x2DE0, 0x2DFF, // Cyrillic Extended-A 0xA640, 0xA69F, // Cyrillic Extended-B 0, }; return &ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesThai() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin 0x2010, 0x205E, // Punctuations 0x0E00, 0x0E7F, // Thai 0, }; return &ranges[0]; } const ImWchar *ImFontAtlas::GetGlyphRangesVietnamese() { static const ImWchar ranges[] = { 0x0020, 0x00FF, // Basic Latin 0x0102, 0x0103, 0x0110, 0x0111, 0x0128, 0x0129, 0x0168, 0x0169, 0x01A0, 0x01A1, 0x01AF, 0x01B0, 0x1EA0, 0x1EF9, 0, }; return &ranges[0]; } #endif // #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS //----------------------------------------------------------------------------- // [SECTION] ImFontGlyphRangesBuilder //----------------------------------------------------------------------------- void ImFontGlyphRangesBuilder::AddText(const char *text, const char *text_end) { while (text_end ? (text < text_end) : *text) { unsigned int c = 0; int c_len = ImTextCharFromUtf8(&c, text, text_end); text += c_len; if (c_len == 0) break; AddChar((ImWchar)c); } } void ImFontGlyphRangesBuilder::AddRanges(const ImWchar *ranges) { for (; ranges[0]; ranges += 2) for (unsigned int c = ranges[0]; c <= ranges[1] && c <= IM_UNICODE_CODEPOINT_MAX; c++) //-V560 AddChar((ImWchar)c); } void ImFontGlyphRangesBuilder::BuildRanges(ImVector *out_ranges) { const int max_codepoint = IM_UNICODE_CODEPOINT_MAX; for (int n = 0; n <= max_codepoint; n++) if (GetBit(n)) { out_ranges->push_back((ImWchar)n); while (n < max_codepoint && GetBit(n + 1)) n++; out_ranges->push_back((ImWchar)n); } out_ranges->push_back(0); } //----------------------------------------------------------------------------- // [SECTION] ImFont //----------------------------------------------------------------------------- ImFontBaked::ImFontBaked() { memset(this, 0, sizeof(*this)); FallbackGlyphIndex = -1; } void ImFontBaked::ClearOutputData() { FallbackAdvanceX = 0.0f; Glyphs.clear(); IndexAdvanceX.clear(); IndexLookup.clear(); FallbackGlyphIndex = -1; Ascent = Descent = 0.0f; MetricsTotalSurface = 0; } ImFont::ImFont() { memset(this, 0, sizeof(*this)); #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS Scale = 1.0f; #endif } ImFont::~ImFont() { ClearOutputData(); } void ImFont::ClearOutputData() { if (ImFontAtlas *atlas = ContainerAtlas) ImFontAtlasFontDiscardBakes(atlas, this, 0); FallbackChar = EllipsisChar = 0; memset(Used8kPagesMap, 0, sizeof(Used8kPagesMap)); LastBaked = NULL; } // API is designed this way to avoid exposing the 8K page size // e.g. use with IsGlyphRangeUnused(0, 255) bool ImFont::IsGlyphRangeUnused(unsigned int c_begin, unsigned int c_last) { unsigned int page_begin = (c_begin / 8192); unsigned int page_last = (c_last / 8192); for (unsigned int page_n = page_begin; page_n <= page_last; page_n++) if ((page_n >> 3) < sizeof(Used8kPagesMap)) if (Used8kPagesMap[page_n >> 3] & (1 << (page_n & 7))) return false; return true; } // x0/y0/x1/y1 are offset from the character upper-left layout position, in pixels. Therefore x0/y0 are often fairly // close to zero. Not to be mistaken with texture coordinates, which are held by u0/v0/u1/v1 in normalized format // (0.0..1.0 on each texture axis). // - 'src' is not necessarily == 'this->Sources' because multiple source fonts+configs can be used to build one target // font. ImFontGlyph *ImFontAtlasBakedAddFontGlyph(ImFontAtlas *atlas, ImFontBaked *baked, ImFontConfig *src, const ImFontGlyph *in_glyph) { int glyph_idx = baked->Glyphs.Size; baked->Glyphs.push_back(*in_glyph); ImFontGlyph *glyph = &baked->Glyphs[glyph_idx]; IM_ASSERT(baked->Glyphs.Size < 0xFFFE); // IndexLookup[] hold 16-bit values and -1/-2 are reserved. // Set UV from packed rectangle if (glyph->PackId != ImFontAtlasRectId_Invalid) { ImTextureRect *r = ImFontAtlasPackGetRect(atlas, glyph->PackId); IM_ASSERT(glyph->U0 == 0.0f && glyph->V0 == 0.0f && glyph->U1 == 0.0f && glyph->V1 == 0.0f); glyph->U0 = (r->x) * atlas->TexUvScale.x; glyph->V0 = (r->y) * atlas->TexUvScale.y; glyph->U1 = (r->x + r->w) * atlas->TexUvScale.x; glyph->V1 = (r->y + r->h) * atlas->TexUvScale.y; baked->MetricsTotalSurface += r->w * r->h; } if (src != NULL) { // Clamp & recenter if needed const float ref_size = baked->ContainerFont->Sources[0]->SizePixels; const float offsets_scale = (ref_size != 0.0f) ? (baked->Size / ref_size) : 1.0f; float advance_x = ImClamp(glyph->AdvanceX, src->GlyphMinAdvanceX * offsets_scale, src->GlyphMaxAdvanceX * offsets_scale); if (advance_x != glyph->AdvanceX) { float char_off_x = src->PixelSnapH ? ImTrunc((advance_x - glyph->AdvanceX) * 0.5f) : (advance_x - glyph->AdvanceX) * 0.5f; glyph->X0 += char_off_x; glyph->X1 += char_off_x; } // Snap to pixel if (src->PixelSnapH) advance_x = IM_ROUND(advance_x); // Bake spacing glyph->AdvanceX = advance_x + src->GlyphExtraAdvanceX; } if (glyph->Colored) atlas->TexPixelsUseColors = atlas->TexData->UseColors = true; // Update lookup tables const int codepoint = glyph->Codepoint; ImFontBaked_BuildGrowIndex(baked, codepoint + 1); baked->IndexAdvanceX[codepoint] = glyph->AdvanceX; baked->IndexLookup[codepoint] = (ImU16)glyph_idx; const int page_n = codepoint / 8192; baked->ContainerFont->Used8kPagesMap[page_n >> 3] |= 1 << (page_n & 7); return glyph; } // Copy to texture, post-process and queue update for backend void ImFontAtlasBakedSetFontGlyphBitmap(ImFontAtlas *atlas, ImFontBaked *baked, ImFontConfig *src, ImFontGlyph *glyph, ImTextureRect *r, const unsigned char *src_pixels, ImTextureFormat src_fmt, int src_pitch) { ImTextureData *tex = atlas->TexData; IM_ASSERT(r->x + r->w <= tex->Width && r->y + r->h <= tex->Height); ImFontAtlasTextureBlockConvert(src_pixels, src_fmt, src_pitch, tex->GetPixelsAt(r->x, r->y), tex->Format, tex->GetPitch(), r->w, r->h); ImFontAtlasPostProcessData pp_data = { atlas, baked->ContainerFont, src, baked, glyph, tex->GetPixelsAt(r->x, r->y), tex->Format, tex->GetPitch(), r->w, r->h}; ImFontAtlasTextureBlockPostProcess(&pp_data); ImFontAtlasTextureBlockQueueUpload(atlas, tex, r->x, r->y, r->w, r->h); } void ImFont::AddRemapChar(ImWchar from_codepoint, ImWchar to_codepoint) { RemapPairs.SetInt((ImGuiID)from_codepoint, (int)to_codepoint); } // Find glyph, load if necessary, return fallback if missing ImFontGlyph *ImFontBaked::FindGlyph(ImWchar c) { if (c < (size_t)IndexLookup.Size) IM_LIKELY { const int i = (int)IndexLookup.Data[c]; if (i == IM_FONTGLYPH_INDEX_NOT_FOUND) return &Glyphs.Data[FallbackGlyphIndex]; if (i != IM_FONTGLYPH_INDEX_UNUSED) return &Glyphs.Data[i]; } ImFontGlyph *glyph = ImFontBaked_BuildLoadGlyph(this, c); return glyph ? glyph : &Glyphs.Data[FallbackGlyphIndex]; } // Attempt to load but when missing, return NULL instead of FallbackGlyph ImFontGlyph *ImFontBaked::FindGlyphNoFallback(ImWchar c) { if (c < (size_t)IndexLookup.Size) IM_LIKELY { const int i = (int)IndexLookup.Data[c]; if (i == IM_FONTGLYPH_INDEX_NOT_FOUND) return NULL; if (i != IM_FONTGLYPH_INDEX_UNUSED) return &Glyphs.Data[i]; } LockLoadingFallback = true; // This is actually a rare call, not done in hot-loop, so we prioritize not adding extra // cruft to ImFontBaked_BuildLoadGlyph() call sites. ImFontGlyph *glyph = ImFontBaked_BuildLoadGlyph(this, c); LockLoadingFallback = false; return glyph; } bool ImFontBaked::IsGlyphLoaded(ImWchar c) { if (c < (size_t)IndexLookup.Size) IM_LIKELY { const int i = (int)IndexLookup.Data[c]; if (i == IM_FONTGLYPH_INDEX_NOT_FOUND) return false; if (i != IM_FONTGLYPH_INDEX_UNUSED) return true; } return false; } // This is not fast query bool ImFont::IsGlyphInFont(ImWchar c) { ImFontAtlas *atlas = ContainerAtlas; ImFontAtlas_FontHookRemapCodepoint(atlas, this, &c); for (ImFontConfig *src : Sources) { const ImFontLoader *loader = src->FontLoader ? src->FontLoader : atlas->FontLoader; if (loader->FontSrcContainsGlyph != NULL && loader->FontSrcContainsGlyph(atlas, src, c)) return true; } return false; } // This is manually inlined in CalcTextSizeA() and CalcWordWrapPosition(), with a non-inline call to // BuildLoadGlyphGetAdvanceOrFallback(). IM_MSVC_RUNTIME_CHECKS_OFF float ImFontBaked::GetCharAdvance(ImWchar c) { if ((int)c < IndexAdvanceX.Size) { // Missing glyphs fitting inside index will have stored FallbackAdvanceX already. const float x = IndexAdvanceX.Data[c]; if (x >= 0.0f) return x; } // Same as BuildLoadGlyphGetAdvanceOrFallback(): const ImFontGlyph *glyph = ImFontBaked_BuildLoadGlyph(this, c); return glyph ? glyph->AdvanceX : FallbackAdvanceX; } IM_MSVC_RUNTIME_CHECKS_RESTORE ImGuiID ImFontAtlasBakedGetId(ImGuiID font_id, float baked_size, float rasterizer_density) { struct { ImGuiID FontId; float BakedSize; float RasterizerDensity; } hashed_data; hashed_data.FontId = font_id; hashed_data.BakedSize = baked_size; hashed_data.RasterizerDensity = rasterizer_density; return ImHashData(&hashed_data, sizeof(hashed_data)); } // ImFontBaked pointers are valid for the entire frame but shall never be kept between frames. ImFontBaked *ImFont::GetFontBaked(float size, float density) { ImFontBaked *baked = LastBaked; // Round font size // - ImGui::PushFontSize() will already round, but other paths calling GetFontBaked() directly also needs it (e.g. // ImFontAtlasBuildPreloadAllGlyphRanges) size = ImGui::GetRoundedFontSize(size); if (density < 0.0f) density = CurrentRasterizerDensity; if (baked && baked->Size == size && baked->RasterizerDensity == density) return baked; ImFontAtlas *atlas = ContainerAtlas; ImFontAtlasBuilder *builder = atlas->Builder; baked = ImFontAtlasBakedGetOrAdd(atlas, this, size, density); if (baked == NULL) return NULL; baked->LastUsedFrame = builder->FrameCount; LastBaked = baked; return baked; } ImFontBaked *ImFontAtlasBakedGetOrAdd(ImFontAtlas *atlas, ImFont *font, float font_size, float font_rasterizer_density) { // FIXME-NEWATLAS: Design for picking a nearest size based on some criteria? // FIXME-NEWATLAS: Altering font density won't work right away. IM_ASSERT(font_size > 0.0f && font_rasterizer_density > 0.0f); ImGuiID baked_id = ImFontAtlasBakedGetId(font->FontId, font_size, font_rasterizer_density); ImFontAtlasBuilder *builder = atlas->Builder; ImFontBaked **p_baked_in_map = (ImFontBaked **)builder->BakedMap.GetVoidPtrRef(baked_id); ImFontBaked *baked = *p_baked_in_map; if (baked != NULL) { IM_ASSERT(baked->Size == font_size && baked->ContainerFont == font && baked->BakedId == baked_id); return baked; } // If atlas is locked, find closest match // FIXME-OPT: This is not an optimal query. if ((font->Flags & ImFontFlags_LockBakedSizes) || atlas->Locked) { baked = ImFontAtlasBakedGetClosestMatch(atlas, font, font_size, font_rasterizer_density); if (baked != NULL) return baked; if (atlas->Locked) { IM_ASSERT( !atlas->Locked && "Cannot use dynamic font size with a locked ImFontAtlas!"); // Locked because rendering backend does not // support // ImGuiBackendFlags_RendererHasTextures! return NULL; } } // Create new baked = ImFontAtlasBakedAdd(atlas, font, font_size, font_rasterizer_density, baked_id); *p_baked_in_map = baked; // To avoid 'builder->BakedMap.SetVoidPtr(baked_id, baked);' while we can. return baked; } // Trim trailing space and find beginning of next line static inline const char *CalcWordWrapNextLineStartA(const char *text, const char *text_end) { while (text < text_end && ImCharIsBlankA(*text)) text++; if (*text == '\n') text++; return text; } // Simple word-wrapping for English, not full-featured. Please submit failing cases! // This will return the next location to wrap from. If no wrapping if necessary, this will fast-forward to e.g. // text_end. // FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible // support for punctuations, support for Unicode punctuations, etc.) const char *ImFont::CalcWordWrapPosition(float size, const char *text, const char *text_end, float wrap_width) { // For references, possible wrap point marked with ^ // "aaa bbb, ccc,ddd. eee fff. ggg!" // ^ ^ ^ ^ ^__ ^ ^ // List of hardcoded separators: .,;!?'" // Skip extra blanks after a line returns (that includes not counting them in width computation) // e.g. "Hello world" --> "Hello" "World" // Cut words that cannot possibly fit within one line. // e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish" ImFontBaked *baked = GetFontBaked(size); const float scale = size / baked->Size; float line_width = 0.0f; float word_width = 0.0f; float blank_width = 0.0f; wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters const char *word_end = text; const char *prev_word_end = NULL; bool inside_word = true; const char *s = text; IM_ASSERT(text_end != NULL); while (s < text_end) { unsigned int c = (unsigned int)*s; const char *next_s; if (c < 0x80) next_s = s + 1; else next_s = s + ImTextCharFromUtf8(&c, s, text_end); if (c < 32) { if (c == '\n') { line_width = word_width = blank_width = 0.0f; inside_word = true; s = next_s; continue; } if (c == '\r') { s = next_s; continue; } } // Optimized inline version of 'float char_width = GetCharAdvance((ImWchar)c);' float char_width = (c < (unsigned int)baked->IndexAdvanceX.Size) ? baked->IndexAdvanceX.Data[c] : -1.0f; if (char_width < 0.0f) char_width = BuildLoadGlyphGetAdvanceOrFallback(baked, c); if (ImCharIsBlankW(c)) { if (inside_word) { line_width += blank_width; blank_width = 0.0f; word_end = s; } blank_width += char_width; inside_word = false; } else { word_width += char_width; if (inside_word) { word_end = next_s; } else { prev_word_end = word_end; line_width += word_width + blank_width; word_width = blank_width = 0.0f; } // Allow wrapping after punctuation. inside_word = (c != '.' && c != ',' && c != ';' && c != '!' && c != '?' && c != '\"' && c != 0x3001 && c != 0x3002); } // We ignore blank width at the end of the line (they can be skipped) if (line_width + word_width > wrap_width) { // Words that cannot possibly fit within an entire line will be cut anywhere. if (word_width < wrap_width) s = prev_word_end ? prev_word_end : word_end; break; } s = next_s; } // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity. // +1 may not be a character start point in UTF-8 but it's ok because caller loops use (text >= word_wrap_eol). if (s == text && text < text_end) return s + ImTextCountUtf8BytesFromChar(s, text_end); return s; } ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char *text_begin, const char *text_end, const char **remaining) { if (!text_end) text_end = text_begin + ImStrlen(text_begin); // FIXME-OPT: Need to avoid this. const float line_height = size; ImFontBaked *baked = GetFontBaked(size); const float scale = size / baked->Size; ImVec2 text_size = ImVec2(0, 0); float line_width = 0.0f; const bool word_wrap_enabled = (wrap_width > 0.0f); const char *word_wrap_eol = NULL; const char *s = text_begin; while (s < text_end) { if (word_wrap_enabled) { // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not // intrusive for what's essentially an uncommon feature. if (!word_wrap_eol) word_wrap_eol = CalcWordWrapPosition(size, s, text_end, wrap_width - line_width); if (s >= word_wrap_eol) { if (text_size.x < line_width) text_size.x = line_width; text_size.y += line_height; line_width = 0.0f; word_wrap_eol = NULL; s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks continue; } } // Decode and advance source const char *prev_s = s; unsigned int c = (unsigned int)*s; if (c < 0x80) s += 1; else s += ImTextCharFromUtf8(&c, s, text_end); if (c < 32) { if (c == '\n') { text_size.x = ImMax(text_size.x, line_width); text_size.y += line_height; line_width = 0.0f; continue; } if (c == '\r') continue; } // Optimized inline version of 'float char_width = GetCharAdvance((ImWchar)c);' float char_width = (c < (unsigned int)baked->IndexAdvanceX.Size) ? baked->IndexAdvanceX.Data[c] : -1.0f; if (char_width < 0.0f) char_width = BuildLoadGlyphGetAdvanceOrFallback(baked, c); char_width *= scale; if (line_width + char_width >= max_width) { s = prev_s; break; } line_width += char_width; } if (text_size.x < line_width) text_size.x = line_width; if (line_width > 0 || text_size.y == 0.0f) text_size.y += line_height; if (remaining) *remaining = s; return text_size; } // Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound. void ImFont::RenderChar(ImDrawList *draw_list, float size, const ImVec2 &pos, ImU32 col, ImWchar c, const ImVec4 *cpu_fine_clip) { ImFontBaked *baked = GetFontBaked(size); const ImFontGlyph *glyph = baked->FindGlyph(c); if (!glyph || !glyph->Visible) return; if (glyph->Colored) col |= ~IM_COL32_A_MASK; float scale = (size >= 0.0f) ? (size / baked->Size) : 1.0f; float x = IM_TRUNC(pos.x); float y = IM_TRUNC(pos.y); float x1 = x + glyph->X0 * scale; float x2 = x + glyph->X1 * scale; if (cpu_fine_clip && (x1 > cpu_fine_clip->z || x2 < cpu_fine_clip->x)) return; float y1 = y + glyph->Y0 * scale; float y2 = y + glyph->Y1 * scale; float u1 = glyph->U0; float v1 = glyph->V0; float u2 = glyph->U1; float v2 = glyph->V1; // Always CPU fine clip. Code extracted from RenderText(). // CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis // aligned quads. if (cpu_fine_clip != NULL) { if (x1 < cpu_fine_clip->x) { u1 = u1 + (1.0f - (x2 - cpu_fine_clip->x) / (x2 - x1)) * (u2 - u1); x1 = cpu_fine_clip->x; } if (y1 < cpu_fine_clip->y) { v1 = v1 + (1.0f - (y2 - cpu_fine_clip->y) / (y2 - y1)) * (v2 - v1); y1 = cpu_fine_clip->y; } if (x2 > cpu_fine_clip->z) { u2 = u1 + ((cpu_fine_clip->z - x1) / (x2 - x1)) * (u2 - u1); x2 = cpu_fine_clip->z; } if (y2 > cpu_fine_clip->w) { v2 = v1 + ((cpu_fine_clip->w - y1) / (y2 - y1)) * (v2 - v1); y2 = cpu_fine_clip->w; } if (y1 >= y2) return; } draw_list->PrimReserve(6, 4); draw_list->PrimRectUV(ImVec2(x1, y1), ImVec2(x2, y2), ImVec2(u1, v1), ImVec2(u2, v2), col); } // Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound. void ImFont::RenderText(ImDrawList *draw_list, float size, const ImVec2 &pos, ImU32 col, const ImVec4 &clip_rect, const char *text_begin, const char *text_end, float wrap_width, bool cpu_fine_clip) { // Align to be pixel perfect begin: float x = IM_TRUNC(pos.x); float y = IM_TRUNC(pos.y); if (y > clip_rect.w) return; if (!text_end) text_end = text_begin + ImStrlen(text_begin); // ImGui:: functions generally already provides a valid text_end, // so this is merely to handle direct calls. const float line_height = size; ImFontBaked *baked = GetFontBaked(size); const float scale = size / baked->Size; const float origin_x = x; const bool word_wrap_enabled = (wrap_width > 0.0f); // Fast-forward to first visible line const char *s = text_begin; if (y + line_height < clip_rect.y) while (y + line_height < clip_rect.y && s < text_end) { const char *line_end = (const char *)ImMemchr(s, '\n', text_end - s); if (word_wrap_enabled) { // FIXME-OPT: This is not optimal as do first do a search for \n before calling CalcWordWrapPosition(). // If the specs for CalcWordWrapPosition() were reworked to optionally return on \n we could combine // both. However it is still better than nothing performing the fast-forward! s = CalcWordWrapPosition(size, s, line_end ? line_end : text_end, wrap_width); s = CalcWordWrapNextLineStartA(s, text_end); } else { s = line_end ? line_end + 1 : text_end; } y += line_height; } // For large text, scan for the last visible line in order to avoid over-reserving in the call to PrimReserve() // Note that very large horizontal line will still be affected by the issue (e.g. a one megabyte string buffer // without a newline will likely crash atm) if (text_end - s > 10000 && !word_wrap_enabled) { const char *s_end = s; float y_end = y; while (y_end < clip_rect.w && s_end < text_end) { s_end = (const char *)ImMemchr(s_end, '\n', text_end - s_end); s_end = s_end ? s_end + 1 : text_end; y_end += line_height; } text_end = s_end; } if (s == text_end) return; // Reserve vertices for remaining worse case (over-reserving is useful and easily amortized) const int cmd_count = draw_list->CmdBuffer.Size; const int vtx_count_max = (int)(text_end - s) * 4; const int idx_count_max = (int)(text_end - s) * 6; const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max; draw_list->PrimReserve(idx_count_max, vtx_count_max); ImDrawVert *vtx_write = draw_list->_VtxWritePtr; ImDrawIdx *idx_write = draw_list->_IdxWritePtr; unsigned int vtx_index = draw_list->_VtxCurrentIdx; const ImU32 col_untinted = col | ~IM_COL32_A_MASK; const char *word_wrap_eol = NULL; while (s < text_end) { if (word_wrap_enabled) { // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not // intrusive for what's essentially an uncommon feature. if (!word_wrap_eol) word_wrap_eol = CalcWordWrapPosition(size, s, text_end, wrap_width - (x - origin_x)); if (s >= word_wrap_eol) { x = origin_x; y += line_height; if (y > clip_rect.w) break; // break out of main loop word_wrap_eol = NULL; s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks continue; } } // Decode and advance source unsigned int c = (unsigned int)*s; if (c < 0x80) s += 1; else s += ImTextCharFromUtf8(&c, s, text_end); if (c < 32) { if (c == '\n') { x = origin_x; y += line_height; if (y > clip_rect.w) break; // break out of main loop continue; } if (c == '\r') continue; } const ImFontGlyph *glyph = baked->FindGlyph((ImWchar)c); // if (glyph == NULL) // continue; float char_width = glyph->AdvanceX * scale; if (glyph->Visible) { // We don't do a second finer clipping test on the Y axis as we've already skipped anything before // clip_rect.y and exit once we pass clip_rect.w float x1 = x + glyph->X0 * scale; float x2 = x + glyph->X1 * scale; float y1 = y + glyph->Y0 * scale; float y2 = y + glyph->Y1 * scale; if (x1 <= clip_rect.z && x2 >= clip_rect.x) { // Render a character float u1 = glyph->U0; float v1 = glyph->V0; float u2 = glyph->U1; float v2 = glyph->V1; // CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for // axis aligned quads. if (cpu_fine_clip) { if (x1 < clip_rect.x) { u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1); x1 = clip_rect.x; } if (y1 < clip_rect.y) { v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1); y1 = clip_rect.y; } if (x2 > clip_rect.z) { u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1); x2 = clip_rect.z; } if (y2 > clip_rect.w) { v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1); y2 = clip_rect.w; } if (y1 >= y2) { x += char_width; continue; } } // Support for untinted glyphs ImU32 glyph_col = glyph->Colored ? col_untinted : col; // We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. // Inlined here: { vtx_write[0].pos.x = x1; vtx_write[0].pos.y = y1; vtx_write[0].col = glyph_col; vtx_write[0].uv.x = u1; vtx_write[0].uv.y = v1; vtx_write[1].pos.x = x2; vtx_write[1].pos.y = y1; vtx_write[1].col = glyph_col; vtx_write[1].uv.x = u2; vtx_write[1].uv.y = v1; vtx_write[2].pos.x = x2; vtx_write[2].pos.y = y2; vtx_write[2].col = glyph_col; vtx_write[2].uv.x = u2; vtx_write[2].uv.y = v2; vtx_write[3].pos.x = x1; vtx_write[3].pos.y = y2; vtx_write[3].col = glyph_col; vtx_write[3].uv.x = u1; vtx_write[3].uv.y = v2; idx_write[0] = (ImDrawIdx)(vtx_index); idx_write[1] = (ImDrawIdx)(vtx_index + 1); idx_write[2] = (ImDrawIdx)(vtx_index + 2); idx_write[3] = (ImDrawIdx)(vtx_index); idx_write[4] = (ImDrawIdx)(vtx_index + 2); idx_write[5] = (ImDrawIdx)(vtx_index + 3); vtx_write += 4; vtx_index += 4; idx_write += 6; } } } x += char_width; } // Edge case: calling RenderText() with unloaded glyphs triggering texture change. It doesn't happen via ImGui:: // calls because CalcTextSize() is always used. if (cmd_count != draw_list->CmdBuffer.Size) { IM_ASSERT(draw_list->CmdBuffer[draw_list->CmdBuffer.Size - 1].ElemCount == 0); draw_list->CmdBuffer.pop_back(); draw_list->PrimUnreserve(idx_count_max, vtx_count_max); draw_list->AddDrawCmd(); goto begin; // RenderText(draw_list, size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip); // // FIXME-OPT: Would a 'goto begin' be better for code-gen? return; } // Give back unused vertices (clipped ones, blanks) ~ this is essentially a PrimUnreserve() action. draw_list->VtxBuffer.Size = (int)(vtx_write - draw_list->VtxBuffer.Data); // Same as calling shrink() draw_list->IdxBuffer.Size = (int)(idx_write - draw_list->IdxBuffer.Data); draw_list->CmdBuffer[draw_list->CmdBuffer.Size - 1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size); draw_list->_VtxWritePtr = vtx_write; draw_list->_IdxWritePtr = idx_write; draw_list->_VtxCurrentIdx = vtx_index; } //----------------------------------------------------------------------------- // [SECTION] ImGui Internal Render Helpers //----------------------------------------------------------------------------- // Vaguely redesigned to stop accessing ImGui global state: // - RenderArrow() // - RenderBullet() // - RenderCheckMark() // - RenderArrowPointingAt() // - RenderRectFilledRangeH() // - RenderRectFilledWithHole() //----------------------------------------------------------------------------- // Function in need of a redesign (legacy mess) // - RenderColorRectWithAlphaCheckerboard() //----------------------------------------------------------------------------- // Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To // e.g. denote expanded/collapsed state void ImGui::RenderArrow(ImDrawList *draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale) { const float h = draw_list->_Data->FontSize * 1.00f; float r = h * 0.40f * scale; ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale); ImVec2 a, b, c; switch (dir) { case ImGuiDir_Up: case ImGuiDir_Down: if (dir == ImGuiDir_Up) r = -r; a = ImVec2(+0.000f, +0.750f) * r; b = ImVec2(-0.866f, -0.750f) * r; c = ImVec2(+0.866f, -0.750f) * r; break; case ImGuiDir_Left: case ImGuiDir_Right: if (dir == ImGuiDir_Left) r = -r; a = ImVec2(+0.750f, +0.000f) * r; b = ImVec2(-0.750f, +0.866f) * r; c = ImVec2(-0.750f, -0.866f) * r; break; case ImGuiDir_None: case ImGuiDir_COUNT: IM_ASSERT(0); break; } draw_list->AddTriangleFilled(center + a, center + b, center + c, col); } void ImGui::RenderBullet(ImDrawList *draw_list, ImVec2 pos, ImU32 col) { // FIXME-OPT: This should be baked in font. draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8); } void ImGui::RenderCheckMark(ImDrawList *draw_list, ImVec2 pos, ImU32 col, float sz) { float thickness = ImMax(sz / 5.0f, 1.0f); sz -= thickness * 0.5f; pos += ImVec2(thickness * 0.25f, thickness * 0.25f); float third = sz / 3.0f; float bx = pos.x + third; float by = pos.y + sz - third * 0.5f; draw_list->PathLineTo(ImVec2(bx - third, by - third)); draw_list->PathLineTo(ImVec2(bx, by)); draw_list->PathLineTo(ImVec2(bx + third * 2.0f, by - third * 2.0f)); draw_list->PathStroke(col, 0, thickness); } // Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on // each side. void ImGui::RenderArrowPointingAt(ImDrawList *draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col) { switch (direction) { case ImGuiDir_Left: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), pos, col); return; case ImGuiDir_Right: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), pos, col); return; case ImGuiDir_Up: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), pos, col); return; case ImGuiDir_Down: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), pos, col); return; case ImGuiDir_None: case ImGuiDir_COUNT: break; // Fix warnings } } static inline float ImAcos01(float x) { if (x <= 0.0f) return IM_PI * 0.5f; if (x >= 1.0f) return 0.0f; return ImAcos(x); // return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, // may be enough for what we do. } // FIXME: Cleanup and move code to ImDrawList. void ImGui::RenderRectFilledRangeH(ImDrawList *draw_list, const ImRect &rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding) { if (x_end_norm == x_start_norm) return; if (x_start_norm > x_end_norm) ImSwap(x_start_norm, x_end_norm); ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y); ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y); if (rounding == 0.0f) { draw_list->AddRectFilled(p0, p1, col, 0.0f); return; } rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding); const float inv_rounding = 1.0f / rounding; const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding); const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding); const float half_pi = IM_PI * 0.5f; // We will == compare to this because we know this is the exact value ImAcos01 can return. const float x0 = ImMax(p0.x, rect.Min.x + rounding); if (arc0_b == arc0_e) { draw_list->PathLineTo(ImVec2(x0, p1.y)); draw_list->PathLineTo(ImVec2(x0, p0.y)); } else if (arc0_b == 0.0f && arc0_e == half_pi) { draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR } else { draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b); // BL draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e); // TR } if (p1.x > rect.Min.x + rounding) { const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding); const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding); const float x1 = ImMin(p1.x, rect.Max.x - rounding); if (arc1_b == arc1_e) { draw_list->PathLineTo(ImVec2(x1, p0.y)); draw_list->PathLineTo(ImVec2(x1, p1.y)); } else if (arc1_b == 0.0f && arc1_e == half_pi) { draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3); // BR } else { draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b); // TR draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e); // BR } } draw_list->PathFillConvex(col); } void ImGui::RenderRectFilledWithHole(ImDrawList *draw_list, const ImRect &outer, const ImRect &inner, ImU32 col, float rounding) { const bool fill_L = (inner.Min.x > outer.Min.x); const bool fill_R = (inner.Max.x < outer.Max.x); const bool fill_U = (inner.Min.y > outer.Min.y); const bool fill_D = (inner.Max.y < outer.Max.y); if (fill_L) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Min.y), ImVec2(inner.Min.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomLeft)); if (fill_R) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Min.y), ImVec2(outer.Max.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopRight) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomRight)); if (fill_U) draw_list->AddRectFilled(ImVec2(inner.Min.x, outer.Min.y), ImVec2(inner.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersTopRight)); if (fill_D) draw_list->AddRectFilled(ImVec2(inner.Min.x, inner.Max.y), ImVec2(inner.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersBottomLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersBottomRight)); if (fill_L && fill_U) draw_list->AddRectFilled(ImVec2(outer.Min.x, outer.Min.y), ImVec2(inner.Min.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopLeft); if (fill_R && fill_U) draw_list->AddRectFilled(ImVec2(inner.Max.x, outer.Min.y), ImVec2(outer.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopRight); if (fill_L && fill_D) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Max.y), ImVec2(inner.Min.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomLeft); if (fill_R && fill_D) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Max.y), ImVec2(outer.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomRight); } // Helper for ColorPicker4() // NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple // cells. Caller currently responsible for avoiding that. Spent a non reasonable amount of time trying to getting this // right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and // offsets, and eventually gave up... probably more reasonable to disable rounding altogether. // FIXME: uses ImGui::GetColorU32 void ImGui::RenderColorRectWithAlphaCheckerboard(ImDrawList *draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, ImDrawFlags flags) { if ((flags & ImDrawFlags_RoundCornersMask_) == 0) flags = ImDrawFlags_RoundCornersDefault_; if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF) { ImU32 col_bg1 = GetColorU32(ImAlphaBlendColors(IM_COL32(204, 204, 204, 255), col)); ImU32 col_bg2 = GetColorU32(ImAlphaBlendColors(IM_COL32(128, 128, 128, 255), col)); draw_list->AddRectFilled(p_min, p_max, col_bg1, rounding, flags); int yi = 0; for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++) { float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y); if (y2 <= y1) continue; for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f) { float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x); if (x2 <= x1) continue; ImDrawFlags cell_flags = ImDrawFlags_RoundCornersNone; if (y1 <= p_min.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersTopLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersTopRight; } if (y2 >= p_max.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersBottomLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersBottomRight; } // Combine flags cell_flags = (flags == ImDrawFlags_RoundCornersNone || cell_flags == ImDrawFlags_RoundCornersNone) ? ImDrawFlags_RoundCornersNone : (cell_flags & flags); draw_list->AddRectFilled(ImVec2(x1, y1), ImVec2(x2, y2), col_bg2, rounding, cell_flags); } } } else { draw_list->AddRectFilled(p_min, p_max, col, rounding, flags); } } //----------------------------------------------------------------------------- // [SECTION] Decompression code //----------------------------------------------------------------------------- // Compressed with stb_compress() then converted to a C array and encoded as base85. // Use the program in misc/fonts/binary_to_compressed_c.cpp to create the array from a TTF file. // The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size. // Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h //----------------------------------------------------------------------------- static unsigned int stb_decompress_length(const unsigned char *input) { return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11]; } static unsigned char *stb__barrier_out_e, *stb__barrier_out_b; static const unsigned char *stb__barrier_in_b; static unsigned char *stb__dout; static void stb__match(const unsigned char *data, unsigned int length) { // INVERSE of memmove... write each byte before copying the next... IM_ASSERT(stb__dout + length <= stb__barrier_out_e); if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; } if (data < stb__barrier_out_b) { stb__dout = stb__barrier_out_e + 1; return; } while (length--) *stb__dout++ = *data++; } static void stb__lit(const unsigned char *data, unsigned int length) { IM_ASSERT(stb__dout + length <= stb__barrier_out_e); if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; } if (data < stb__barrier_in_b) { stb__dout = stb__barrier_out_e + 1; return; } memcpy(stb__dout, data, length); stb__dout += length; } #define stb__in2(x) ((i[x] << 8) + i[(x) + 1]) #define stb__in3(x) ((i[x] << 16) + stb__in2((x) + 1)) #define stb__in4(x) ((i[x] << 24) + stb__in3((x) + 1)) static const unsigned char *stb_decompress_token(const unsigned char *i) { if (*i >= 0x20) { // use fewer if's for cases that expand small if (*i >= 0x80) stb__match(stb__dout - i[1] - 1, i[0] - 0x80 + 1), i += 2; else if (*i >= 0x40) stb__match(stb__dout - (stb__in2(0) - 0x4000 + 1), i[2] + 1), i += 3; else /* *i >= 0x20 */ stb__lit(i + 1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1); } else { // more ifs for cases that expand large, since overhead is amortized if (*i >= 0x18) stb__match(stb__dout - (stb__in3(0) - 0x180000 + 1), i[3] + 1), i += 4; else if (*i >= 0x10) stb__match(stb__dout - (stb__in3(0) - 0x100000 + 1), stb__in2(3) + 1), i += 5; else if (*i >= 0x08) stb__lit(i + 2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1); else if (*i == 0x07) stb__lit(i + 3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1); else if (*i == 0x06) stb__match(stb__dout - (stb__in3(1) + 1), i[4] + 1), i += 5; else if (*i == 0x04) stb__match(stb__dout - (stb__in3(1) + 1), stb__in2(4) + 1), i += 6; } return i; } static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen) { const unsigned long ADLER_MOD = 65521; unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; unsigned long blocklen = buflen % 5552; unsigned long i; while (buflen) { for (i = 0; i + 7 < blocklen; i += 8) { s1 += buffer[0], s2 += s1; s1 += buffer[1], s2 += s1; s1 += buffer[2], s2 += s1; s1 += buffer[3], s2 += s1; s1 += buffer[4], s2 += s1; s1 += buffer[5], s2 += s1; s1 += buffer[6], s2 += s1; s1 += buffer[7], s2 += s1; buffer += 8; } for (; i < blocklen; ++i) s1 += *buffer++, s2 += s1; s1 %= ADLER_MOD, s2 %= ADLER_MOD; buflen -= blocklen; blocklen = 5552; } return (unsigned int)(s2 << 16) + (unsigned int)s1; } static unsigned int stb_decompress(unsigned char *output, const unsigned char *i, unsigned int /*length*/) { if (stb__in4(0) != 0x57bC0000) return 0; if (stb__in4(4) != 0) return 0; // error! stream is > 4GB const unsigned int olen = stb_decompress_length(i); stb__barrier_in_b = i; stb__barrier_out_e = output + olen; stb__barrier_out_b = output; i += 16; stb__dout = output; for (;;) { const unsigned char *old_i = i; i = stb_decompress_token(i); if (i == old_i) { if (*i == 0x05 && i[1] == 0xfa) { IM_ASSERT(stb__dout == output + olen); if (stb__dout != output + olen) return 0; if (stb_adler32(1, output, olen) != (unsigned int)stb__in4(2)) return 0; return olen; } else { IM_ASSERT(0); /* NOTREACHED */ return 0; } } IM_ASSERT(stb__dout <= output + olen); if (stb__dout > output + olen) return 0; } } //----------------------------------------------------------------------------- // [SECTION] Default font data (ProggyClean.ttf) //----------------------------------------------------------------------------- // ProggyClean.ttf // Copyright (c) 2004, 2005 Tristan Grimmer // MIT license (see License.txt in http://www.proggyfonts.net/index.php?menu=download) // Download and more information at http://www.proggyfonts.net or http://upperboundsinteractive.com/fonts.php //----------------------------------------------------------------------------- #ifndef IMGUI_DISABLE_DEFAULT_FONT // File: 'ProggyClean.ttf' (41208 bytes) // Exported using binary_to_compressed_c.exe -u8 "ProggyClean.ttf" proggy_clean_ttf static const unsigned int proggy_clean_ttf_compressed_size = 9583; static const unsigned char proggy_clean_ttf_compressed_data[9583] = { 87, 188, 0, 0, 0, 0, 0, 0, 0, 0, 160, 248, 0, 4, 0, 0, 55, 0, 1, 0, 0, 0, 12, 0, 128, 0, 3, 0, 64, 79, 83, 47, 50, 136, 235, 116, 144, 0, 0, 1, 72, 130, 21, 44, 78, 99, 109, 97, 112, 2, 18, 35, 117, 0, 0, 3, 160, 130, 19, 36, 82, 99, 118, 116, 32, 130, 23, 130, 2, 33, 4, 252, 130, 4, 56, 2, 103, 108, 121, 102, 18, 175, 137, 86, 0, 0, 7, 4, 0, 0, 146, 128, 104, 101, 97, 100, 215, 145, 102, 211, 130, 27, 32, 204, 130, 3, 33, 54, 104, 130, 16, 39, 8, 66, 1, 195, 0, 0, 1, 4, 130, 15, 59, 36, 104, 109, 116, 120, 138, 0, 126, 128, 0, 0, 1, 152, 0, 0, 2, 6, 108, 111, 99, 97, 140, 115, 176, 216, 0, 0, 5, 130, 30, 41, 2, 4, 109, 97, 120, 112, 1, 174, 0, 218, 130, 31, 32, 40, 130, 16, 44, 32, 110, 97, 109, 101, 37, 89, 187, 150, 0, 0, 153, 132, 130, 19, 44, 158, 112, 111, 115, 116, 166, 172, 131, 239, 0, 0, 155, 36, 130, 51, 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239, 32, 49, 141, 239, 32, 49, 141, 239, 32, 49, 141, 239, 32, 49, 141, 239, 45, 49, 102, 6, 100, 101, 108, 101, 116, 101, 4, 69, 117, 114, 111, 140, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 141, 236, 32, 56, 65, 220, 13, 32, 57, 65, 220, 13, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 32, 57, 141, 239, 35, 57, 102, 0, 0, 5, 250, 72, 249, 98, 247, }; static const char *GetDefaultCompressedFontDataTTF(int *out_size) { *out_size = proggy_clean_ttf_compressed_size; return (const char *)proggy_clean_ttf_compressed_data; } #endif // #ifndef IMGUI_DISABLE_DEFAULT_FONT #endif // #ifndef IMGUI_DISABLE