optimized and commented code
Signed-off-by: Peter Siegmund <developer@mars3142.org>
This commit is contained in:
@@ -4,8 +4,30 @@
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#include "common/ScrollBar.h"
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#include "u8g2.h"
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// Menu item type constants for better readability
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namespace MenuItemTypes {
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constexpr uint8_t TEXT = 0;
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constexpr uint8_t SELECTION = 1;
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constexpr uint8_t NUMBER = 2;
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constexpr uint8_t TOGGLE = 3;
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}
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// UI layout constants
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namespace UIConstants {
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constexpr int LEFT_MARGIN = 8;
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constexpr int RIGHT_PADDING = 8;
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constexpr int SCROLLBAR_WIDTH = 3;
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constexpr int FRAME_BOX_SIZE = 14;
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constexpr int FRAME_OFFSET = 11;
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constexpr int SELECTION_MARGIN = 10;
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constexpr int CORNER_RADIUS = 3;
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constexpr int LINE_SPACING = 14;
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constexpr int BOTTOM_OFFSET = 10;
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}
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PSMenu::PSMenu(menu_options_t *options) : Widget(options->u8g2), m_options(options)
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{
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// Set up button callback using lambda to forward to member function
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m_options->onButtonClicked = [this](const uint8_t button) {
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onButtonClicked(button);
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};
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@@ -13,195 +35,226 @@ PSMenu::PSMenu(menu_options_t *options) : Widget(options->u8g2), m_options(optio
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PSMenu::~PSMenu()
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{
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m_options->onButtonClicked = nullptr;
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// Clean up callback to prevent dangling pointer
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if (m_options) {
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m_options->onButtonClicked = nullptr;
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}
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}
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void PSMenu::render()
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{
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if (m_selected_item < 0)
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{
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onPressedDown();
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// Initialize selection if not set
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if (m_selected_item >= m_items.size() && !m_items.empty()) {
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m_selected_item = 0;
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}
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// Early return if no items to render
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if (m_items.empty()) {
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return;
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}
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// Clear screen with black background
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u8g2_SetDrawColor(u8g2, 0);
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u8g2_DrawBox(u8g2, 0, 0, u8g2->width, u8g2->height);
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// Set white foreground color for drawing
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u8g2_SetDrawColor(u8g2, 1);
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// Draw UI components
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drawScrollBar();
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drawSelectionBox();
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int x = 8; // sure?
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auto widget = m_items.at(m_selected_item);
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renderWidget(&widget, u8g2_font_helvB08_tr, x, u8g2->height / 2 + 3);
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// Calculate center position for main item
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const int centerY = u8g2->height / 2 + 3;
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// Render the currently selected item (main/center item)
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const auto& selectedItem = m_items[m_selected_item];
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renderWidget(&selectedItem, u8g2_font_helvB08_tr, UIConstants::LEFT_MARGIN, centerY);
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if (m_selected_item > 0)
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{
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auto item = m_items.at(m_selected_item - 1);
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renderWidget(&item, u8g2_font_haxrcorp4089_tr, x, 14);
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// Render previous item (above) if available
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if (m_selected_item > 0) {
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const auto& prevItem = m_items[m_selected_item - 1];
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renderWidget(&prevItem, u8g2_font_haxrcorp4089_tr, UIConstants::LEFT_MARGIN, UIConstants::LINE_SPACING);
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}
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if (m_selected_item < m_items.size() - 1)
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{
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auto item = m_items.at(m_selected_item + 1);
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renderWidget(&item, u8g2_font_haxrcorp4089_tr, x, u8g2->height - 10);
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// Render next item (below) if available
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if (m_selected_item < m_items.size() - 1) {
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const auto& nextItem = m_items[m_selected_item + 1];
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renderWidget(&nextItem, u8g2_font_haxrcorp4089_tr, UIConstants::LEFT_MARGIN, u8g2->height - UIConstants::BOTTOM_OFFSET);
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}
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}
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void PSMenu::renderWidget(const MenuItem *item, const uint8_t *font, const int x, const int y) const
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{
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// Set font and draw main text
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u8g2_SetFont(u8g2, font);
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u8g2_DrawStr(u8g2, x, y, item->getText().c_str());
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switch (item->getType())
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{
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case 1: // Selection
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{
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std::string value = "< ";
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value += item->getValue();
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value += " >";
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const u8g2_uint_t w = u8g2_GetStrWidth(u8g2, value.c_str());
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u8g2_DrawStr(u8g2, u8g2->width - w - 10, y, value.c_str());
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break;
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}
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case 3: // toggle
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{
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u8g2_DrawFrame(u8g2, u8g2->width - 24, y - 11, 14, 14);
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if (strcmp(item->getValue().c_str(), "true") == 0)
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{
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u8g2_DrawLine(u8g2, u8g2->width - 22, y - 9, u8g2->width - 13, y);
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u8g2_DrawLine(u8g2, u8g2->width - 22, y, u8g2->width - 13, y - 9);
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// Render type-specific elements
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switch (item->getType()) {
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case MenuItemTypes::SELECTION: {
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// Format selection value with angle brackets
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const std::string formattedValue = "< " + item->getValue() + " >";
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const u8g2_uint_t textWidth = u8g2_GetStrWidth(u8g2, formattedValue.c_str());
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u8g2_DrawStr(u8g2, u8g2->width - textWidth - UIConstants::SELECTION_MARGIN, y, formattedValue.c_str());
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break;
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}
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break;
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}
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default:
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case MenuItemTypes::TOGGLE: {
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// Draw checkbox frame
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const int frameX = u8g2->width - UIConstants::FRAME_BOX_SIZE - UIConstants::SELECTION_MARGIN;
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const int frameY = y - UIConstants::FRAME_OFFSET;
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u8g2_DrawFrame(u8g2, frameX, frameY, UIConstants::FRAME_BOX_SIZE, UIConstants::FRAME_BOX_SIZE);
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// Draw checkmark (X) if toggle is true
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if (item->getValue() == "true") {
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const int checkX1 = frameX + 2;
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const int checkY1 = frameY + 2;
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const int checkX2 = frameX + UIConstants::FRAME_BOX_SIZE - 3;
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const int checkY2 = frameY + UIConstants::FRAME_BOX_SIZE - 3;
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// Draw X pattern for checked state
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u8g2_DrawLine(u8g2, checkX1, checkY1, checkX2, checkY2);
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u8g2_DrawLine(u8g2, checkX1, checkY2, checkX2, checkY1);
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}
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break;
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}
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case MenuItemTypes::TEXT:
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case MenuItemTypes::NUMBER:
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default:
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// No additional rendering needed for text and number types
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break;
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}
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}
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void PSMenu::onButtonClicked(const uint8_t button)
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{
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switch (button)
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{
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case BUTTON_UP:
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onPressedUp();
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break;
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// Map button input to navigation functions
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switch (button) {
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case BUTTON_UP:
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onPressedUp();
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break;
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case BUTTON_DOWN:
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onPressedDown();
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break;
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case BUTTON_DOWN:
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onPressedDown();
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break;
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case BUTTON_LEFT:
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onPressedLeft();
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break;
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case BUTTON_LEFT:
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onPressedLeft();
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break;
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case BUTTON_RIGHT:
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onPressedRight();
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break;
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case BUTTON_RIGHT:
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onPressedRight();
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break;
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case BUTTON_SELECT:
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onPressedSelect();
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break;
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case BUTTON_SELECT:
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onPressedSelect();
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break;
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case BUTTON_BACK:
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onPressedBack();
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break;
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case BUTTON_BACK:
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onPressedBack();
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break;
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default:
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break;
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default:
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// Ignore unknown button inputs
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break;
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}
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}
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void PSMenu::onPressedDown()
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{
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if (m_selected_item == m_items.size() - 1)
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{
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m_selected_item = 0;
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}
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else
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{
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m_selected_item++;
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}
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if (m_items.empty()) return;
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// Wrap around to first item when at the end
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m_selected_item = (m_selected_item + 1) % m_items.size();
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}
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void PSMenu::onPressedUp()
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{
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if (m_selected_item == 0)
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{
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m_selected_item = m_items.size() - 1;
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}
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else
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{
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m_selected_item--;
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}
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if (m_items.empty()) return;
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// Wrap around to last item when at the beginning
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m_selected_item = (m_selected_item == 0) ? m_items.size() - 1 : m_selected_item - 1;
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}
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void PSMenu::onPressedLeft() const
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{
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const auto item = m_items.at(m_selected_item);
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item.onButtonPressed(item.getId(), ButtonType::LEFT);
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if (m_selected_item < m_items.size()) {
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const auto& item = m_items[m_selected_item];
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item.onButtonPressed(item.getId(), ButtonType::LEFT);
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}
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}
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void PSMenu::onPressedRight() const
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{
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const auto item = m_items.at(m_selected_item);
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item.onButtonPressed(item.getId(), ButtonType::RIGHT);
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if (m_selected_item < m_items.size()) {
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const auto& item = m_items[m_selected_item];
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item.onButtonPressed(item.getId(), ButtonType::RIGHT);
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}
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}
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void PSMenu::onPressedSelect() const
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{
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const auto item = m_items.at(m_selected_item);
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item.onButtonPressed(item.getId(), ButtonType::SELECT);
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if (m_selected_item < m_items.size()) {
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const auto& item = m_items[m_selected_item];
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item.onButtonPressed(item.getId(), ButtonType::SELECT);
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}
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}
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void PSMenu::onPressedBack() const
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{
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if (m_options && m_options->popScreen)
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{
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// Navigate back to previous screen if callback is available
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if (m_options && m_options->popScreen) {
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m_options->popScreen();
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}
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}
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void PSMenu::addText(uint8_t id, const std::string &text, const ButtonCallback &callback)
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{
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m_items.emplace_back(id, 0, text, callback);
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m_items.emplace_back(id, MenuItemTypes::TEXT, text, callback);
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}
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void PSMenu::addSelection(uint8_t id, const std::string &text, std::string &value,
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const std::vector<std::string> &values,
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const ButtonCallback &callback)
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{
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m_items.emplace_back(id, 1, text, value, values, callback);
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m_items.emplace_back(id, MenuItemTypes::SELECTION, text, value, values, callback);
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}
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void PSMenu::addNumber(uint8_t id, const std::string &text, std::string &value, const ButtonCallback &callback)
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{
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m_items.emplace_back(id, 2, text, value, callback);
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m_items.emplace_back(id, MenuItemTypes::NUMBER, text, value, callback);
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}
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void PSMenu::addToggle(uint8_t id, const std::string &text, bool selected, const ButtonCallback &callback)
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{
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m_items.emplace_back(id, 3, text, selected, callback);
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m_items.emplace_back(id, MenuItemTypes::TOGGLE, text, selected, callback);
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}
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void PSMenu::drawScrollBar() const
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{
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ScrollBar scrollBar(m_options, u8g2->width - 3, 3, 1, u8g2->height - 6);
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// Create scrollbar instance
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ScrollBar scrollBar(m_options, u8g2->width - UIConstants::SCROLLBAR_WIDTH, 3, 1, u8g2->height - 6);
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scrollBar.refresh(m_selected_item, m_items.size());
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scrollBar.render();
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}
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void PSMenu::drawSelectionBox() const
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{
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// Calculate dimensions for the selection box
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const auto displayHeight = u8g2->height;
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const auto displayWidth = u8g2->width;
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constexpr auto rightPadding = 8;
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const auto boxHeight = displayHeight / 3;
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const auto y = boxHeight * 2 - 2;
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const auto x = displayWidth - rightPadding;
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const auto x = displayWidth - UIConstants::RIGHT_PADDING;
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u8g2_DrawRFrame(u8g2, 2, boxHeight, displayWidth - rightPadding, boxHeight, 3);
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u8g2_DrawLine(u8g2, 4, y, displayWidth - rightPadding, y);
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// Draw the rounded frame for the selection box
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u8g2_DrawRFrame(u8g2, 2, boxHeight, displayWidth - UIConstants::RIGHT_PADDING, boxHeight, UIConstants::CORNER_RADIUS);
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// Draw horizontal line separator
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u8g2_DrawLine(u8g2, 4, y, displayWidth - UIConstants::RIGHT_PADDING, y);
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// Draw vertical line on the right side
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u8g2_DrawLine(u8g2, x, y - boxHeight + 3, x, y - 1);
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}
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@@ -9,19 +9,17 @@ ScrollBar::ScrollBar(const menu_options_t *options, const size_t x, const size_t
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void ScrollBar::render()
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{
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if (1 == m_max)
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// Early return if scrollbar is not needed (only one item)
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if (m_max <= 1) {
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return;
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// draw dotted line
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for (size_t y = m_y; y < m_y + m_height; y++)
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{
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if (y % 2 == 0)
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{
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u8g2_DrawPixel(u8g2, m_x, y);
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}
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}
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// draw thumb
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// Draw dotted track line for visual reference
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for (size_t y = m_y; y < m_y + m_height; y += 2) {
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u8g2_DrawPixel(u8g2, m_x, y);
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}
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// Draw scroll thumb to indicate current position
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u8g2_DrawBox(u8g2, u8g2->width - 4, m_thumbY, 3, m_thumbHeight);
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}
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