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latest ImGui

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Signed-off-by: Peter Siegmund <developer@mars3142.org>
This commit is contained in:
Peter Siegmund
2025-06-15 22:28:39 +02:00
parent 11c459bad8
commit 6cf56ba468
13 changed files with 4930 additions and 1840 deletions
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81
components/imgui/include/imstb_textedit.h
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@@ -141,6 +141,7 @@
// with previous char)
// STB_TEXTEDIT_KEYTOTEXT(k) maps a keyboard input to an insertable character
// (return type is int, -1 means not valid to insert)
// (not supported if you want to use UTF-8, see below)
// STB_TEXTEDIT_GETCHAR(obj,i) returns the i'th character of obj, 0-based
// STB_TEXTEDIT_NEWLINE the character returned by _GETCHAR() we recognize
// as manually wordwrapping for end-of-line positioning
@@ -178,6 +179,13 @@
// STB_TEXTEDIT_K_TEXTSTART2 secondary keyboard input to move cursor to start of text
// STB_TEXTEDIT_K_TEXTEND2 secondary keyboard input to move cursor to end of text
//
// To support UTF-8:
//
// STB_TEXTEDIT_GETPREVCHARINDEX returns index of previous character
// STB_TEXTEDIT_GETNEXTCHARINDEX returns index of next character
// Do NOT define STB_TEXTEDIT_KEYTOTEXT.
// Instead, call stb_textedit_text() directly for text contents.
//
// Keyboard input must be encoded as a single integer value; e.g. a character code
// and some bitflags that represent shift states. to simplify the interface, SHIFT must
// be a bitflag, so we can test the shifted state of cursor movements to allow selection,
@@ -250,8 +258,10 @@
// if the STB_TEXTEDIT_KEYTOTEXT function is defined, selected keys are
// transformed into text and stb_textedit_text() is automatically called.
//
// text: [DEAR IMGUI] added 2024-09
// call this to text inputs sent to the textfield.
// text: (added 2025)
// call this to directly send text input the textfield, which is required
// for UTF-8 support, because stb_textedit_key() + STB_TEXTEDIT_KEYTOTEXT()
// cannot infer text length.
//
//
// When rendering, you can read the cursor position and selection state from
@@ -400,6 +410,16 @@ typedef struct
#define IMSTB_TEXTEDIT_memmove memmove
#endif
// [DEAR IMGUI]
// Functions must be implemented for UTF8 support
// Code in this file that uses those functions is modified for [DEAR IMGUI] and deviates from the original stb_textedit.
// There is not necessarily a '[DEAR IMGUI]' at the usage sites.
#ifndef IMSTB_TEXTEDIT_GETPREVCHARINDEX
#define IMSTB_TEXTEDIT_GETPREVCHARINDEX(OBJ, IDX) ((IDX) - 1)
#endif
#ifndef IMSTB_TEXTEDIT_GETNEXTCHARINDEX
#define IMSTB_TEXTEDIT_GETNEXTCHARINDEX(OBJ, IDX) ((IDX) + 1)
#endif
/////////////////////////////////////////////////////////////////////////////
//
@@ -648,17 +668,6 @@ static void stb_textedit_move_to_last(IMSTB_TEXTEDIT_STRING *str, STB_TexteditSt
}
}
// [DEAR IMGUI]
// Functions must be implemented for UTF8 support
// Code in this file that uses those functions is modified for [DEAR IMGUI] and deviates from the original stb_textedit.
// There is not necessarily a '[DEAR IMGUI]' at the usage sites.
#ifndef IMSTB_TEXTEDIT_GETPREVCHARINDEX
#define IMSTB_TEXTEDIT_GETPREVCHARINDEX(obj, idx) (idx - 1)
#endif
#ifndef IMSTB_TEXTEDIT_GETNEXTCHARINDEX
#define IMSTB_TEXTEDIT_GETNEXTCHARINDEX(obj, idx) (idx + 1)
#endif
#ifdef STB_TEXTEDIT_IS_SPACE
static int is_word_boundary( IMSTB_TEXTEDIT_STRING *str, int idx )
{
@@ -668,9 +677,9 @@ static int is_word_boundary( IMSTB_TEXTEDIT_STRING *str, int idx )
#ifndef STB_TEXTEDIT_MOVEWORDLEFT
static int stb_textedit_move_to_word_previous( IMSTB_TEXTEDIT_STRING *str, int c )
{
--c; // always move at least one character
while( c >= 0 && !is_word_boundary( str, c ) )
--c;
c = IMSTB_TEXTEDIT_GETPREVCHARINDEX( str, c ); // always move at least one character
while (c >= 0 && !is_word_boundary(str, c))
c = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, c);
if( c < 0 )
c = 0;
@@ -684,9 +693,9 @@ static int stb_textedit_move_to_word_previous( IMSTB_TEXTEDIT_STRING *str, int c
static int stb_textedit_move_to_word_next( IMSTB_TEXTEDIT_STRING *str, int c )
{
const int len = STB_TEXTEDIT_STRINGLEN(str);
++c; // always move at least one character
c = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, c); // always move at least one character
while( c < len && !is_word_boundary( str, c ) )
++c;
c = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, c);
if( c > len )
c = len;
@@ -739,6 +748,7 @@ static int stb_textedit_paste_internal(IMSTB_TEXTEDIT_STRING *str, STB_TexteditS
#define STB_TEXTEDIT_KEYTYPE int
#endif
// API key: process text input
// [DEAR IMGUI] Added stb_textedit_text(), extracted out and called by stb_textedit_key() for backward compatibility.
static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* state, const IMSTB_TEXTEDIT_CHARTYPE* text, int text_len)
{
@@ -753,8 +763,7 @@ static void stb_textedit_text(IMSTB_TEXTEDIT_STRING* str, STB_TexteditState* sta
state->cursor += text_len;
state->has_preferred_x = 0;
}
}
else {
} else {
stb_textedit_delete_selection(str, state); // implicitly clamps
if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, text_len)) {
stb_text_makeundo_insert(state, state->cursor, text_len);
@@ -771,6 +780,7 @@ retry:
switch (key) {
default: {
#ifdef STB_TEXTEDIT_KEYTOTEXT
// This is not suitable for UTF-8 support.
int c = STB_TEXTEDIT_KEYTOTEXT(key);
if (c > 0) {
IMSTB_TEXTEDIT_CHARTYPE ch = (IMSTB_TEXTEDIT_CHARTYPE)c;
@@ -918,8 +928,9 @@ retry:
state->cursor = start;
STB_TEXTEDIT_LAYOUTROW(&row, str, state->cursor);
x = row.x0;
for (i=0; i < row.num_chars; ++i) {
for (i=0; i < row.num_chars; ) {
float dx = STB_TEXTEDIT_GETWIDTH(str, start, i);
int next = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
#ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
break;
@@ -927,7 +938,8 @@ retry:
x += dx;
if (x > goal_x)
break;
state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
i += next - state->cursor;
state->cursor = next;
}
stb_textedit_clamp(str, state);
@@ -980,8 +992,9 @@ retry:
state->cursor = find.prev_first;
STB_TEXTEDIT_LAYOUTROW(&row, str, state->cursor);
x = row.x0;
for (i=0; i < row.num_chars; ++i) {
for (i=0; i < row.num_chars; ) {
float dx = STB_TEXTEDIT_GETWIDTH(str, find.prev_first, i);
int next = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
#ifdef IMSTB_TEXTEDIT_GETWIDTH_NEWLINE
if (dx == IMSTB_TEXTEDIT_GETWIDTH_NEWLINE)
break;
@@ -989,7 +1002,8 @@ retry:
x += dx;
if (x > goal_x)
break;
state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
i += next - state->cursor;
state->cursor = next;
}
stb_textedit_clamp(str, state);
@@ -1002,8 +1016,13 @@ retry:
// go to previous line
// (we need to scan previous line the hard way. maybe we could expose this as a new API function?)
prev_scan = find.prev_first > 0 ? find.prev_first - 1 : 0;
while (prev_scan > 0 && STB_TEXTEDIT_GETCHAR(str, prev_scan - 1) != STB_TEXTEDIT_NEWLINE)
--prev_scan;
while (prev_scan > 0)
{
int prev = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, prev_scan);
if (STB_TEXTEDIT_GETCHAR(str, prev) == STB_TEXTEDIT_NEWLINE)
break;
prev_scan = prev;
}
find.first_char = find.prev_first;
find.prev_first = prev_scan;
}
@@ -1082,7 +1101,7 @@ retry:
if (state->single_line)
state->cursor = 0;
else while (state->cursor > 0 && STB_TEXTEDIT_GETCHAR(str, state->cursor-1) != STB_TEXTEDIT_NEWLINE)
--state->cursor;
state->cursor = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
state->has_preferred_x = 0;
break;
@@ -1094,9 +1113,9 @@ retry:
stb_textedit_clamp(str, state);
stb_textedit_move_to_first(state);
if (state->single_line)
state->cursor = n;
state->cursor = n;
else while (state->cursor < n && STB_TEXTEDIT_GETCHAR(str, state->cursor) != STB_TEXTEDIT_NEWLINE)
++state->cursor;
state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
state->has_preferred_x = 0;
break;
}
@@ -1110,7 +1129,7 @@ retry:
if (state->single_line)
state->cursor = 0;
else while (state->cursor > 0 && STB_TEXTEDIT_GETCHAR(str, state->cursor-1) != STB_TEXTEDIT_NEWLINE)
--state->cursor;
state->cursor = IMSTB_TEXTEDIT_GETPREVCHARINDEX(str, state->cursor);
state->select_end = state->cursor;
state->has_preferred_x = 0;
break;
@@ -1125,7 +1144,7 @@ retry:
if (state->single_line)
state->cursor = n;
else while (state->cursor < n && STB_TEXTEDIT_GETCHAR(str, state->cursor) != STB_TEXTEDIT_NEWLINE)
++state->cursor;
state->cursor = IMSTB_TEXTEDIT_GETNEXTCHARINDEX(str, state->cursor);
state->select_end = state->cursor;
state->has_preferred_x = 0;
break;