Add SNESColorButton and ConvertSNESColorToImVec4

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