Add SNESColorButton and ConvertSNESColorToImVec4

src/app/gui/color.cc

@@ -10,9 +10,30 @@
 
 namespace yaze {
 namespace app {
-
 namespace gui {
 
+ImVec4 ConvertSNESColorToImVec4(const SNESColor& color) {
+  return ImVec4(static_cast<float>(color.GetRGB().x) / 255.0f,
+                static_cast<float>(color.GetRGB().y) / 255.0f,
+                static_cast<float>(color.GetRGB().z) / 255.0f,
+                1.0f  // Assuming alpha is always fully opaque for SNES colors,
+                      // adjust if necessary
+  );
+}
+
+IMGUI_API bool SNESColorButton(absl::string_view id, SNESColor& color,
+                               ImGuiColorEditFlags flags,
+                               const ImVec2& size_arg) {
+  // Convert the SNES color values to ImGui color values (normalized to 0-1
+  // range)
+  ImVec4 displayColor = ConvertSNESColorToImVec4(color);
+
+  // Call the original ImGui::ColorButton with the converted color
+  bool pressed = ImGui::ColorButton(id.data(), displayColor, flags, size_arg);
+
+  return pressed;
+}
+
 void DisplayPalette(app::gfx::SNESPalette& palette, bool loaded) {
   static ImVec4 color = ImVec4(0, 0, 0, 255.f);
   ImGuiColorEditFlags misc_flags = ImGuiColorEditFlags_AlphaPreview |

src/app/gui/color.h

@@ -11,9 +11,19 @@
 
 namespace yaze {
 namespace app {
-
 namespace gui {
 
+using gfx::SNESColor;
+
+// A utility function to convert an SNESColor object to an ImVec4 with
+// normalized color values
+ImVec4 ConvertSNESColorToImVec4(const SNESColor& color);
+
+// The wrapper function for ImGui::ColorButton that takes a SNESColor reference
+IMGUI_API bool SNESColorButton(absl::string_view id, SNESColor& color,
+                               ImGuiColorEditFlags flags = 0,
+                               const ImVec2& size_arg = ImVec2(0, 0));
+
 void DisplayPalette(app::gfx::SNESPalette& palette, bool loaded);
 
 }  // namespace gui