ShowFontAtlas, Demo: optionally use style text color for tint. (#6129)

imgui.cpp

@@ -13168,10 +13168,13 @@ void ImGui::ShowFontAtlas(ImFontAtlas* atlas)
         DebugNodeFont(font);
         PopID();
     }
-    if (TreeNode("Atlas texture", "Atlas texture (%dx%d pixels)", atlas->TexWidth, atlas->TexHeight))
+    if (TreeNode("Font Atlas", "Font Atlas (%dx%d pixels)", atlas->TexWidth, atlas->TexHeight))
     {
-        ImVec4 tint_col = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
-        ImVec4 border_col = ImVec4(1.0f, 1.0f, 1.0f, 0.5f);
+        ImGuiContext& g = *GImGui;
+        ImGuiMetricsConfig* cfg = &g.DebugMetricsConfig;
+        Checkbox("Tint with Text Color", &cfg->ShowAtlasTintedWithTextColor); // Using text color ensure visibility of core atlas data, but will alter custom colored icons
+        ImVec4 tint_col = cfg->ShowAtlasTintedWithTextColor ? GetStyleColorVec4(ImGuiCol_Text) : ImVec4(1.0f, 1.0f, 1.0f, 1.0f);
+        ImVec4 border_col = GetStyleColorVec4(ImGuiCol_Border);
         Image(atlas->TexID, ImVec2((float)atlas->TexWidth, (float)atlas->TexHeight), ImVec2(0.0f, 0.0f), ImVec2(1.0f, 1.0f), tint_col, border_col);
         TreePop();
     }

imgui_demo.cpp

@@ -1024,12 +1024,14 @@ static void ShowDemoWindowWidgets()
         float my_tex_w = (float)io.Fonts->TexWidth;
         float my_tex_h = (float)io.Fonts->TexHeight;
         {
+            static bool use_text_color_for_tint = false;
+            ImGui::Checkbox("Use Text Color for Tint", &use_text_color_for_tint);
             ImGui::Text("%.0fx%.0f", my_tex_w, my_tex_h);
             ImVec2 pos = ImGui::GetCursorScreenPos();
             ImVec2 uv_min = ImVec2(0.0f, 0.0f);                 // Top-left
             ImVec2 uv_max = ImVec2(1.0f, 1.0f);                 // Lower-right
-            ImVec4 tint_col = ImVec4(1.0f, 1.0f, 1.0f, 1.0f);   // No tint
-            ImVec4 border_col = ImVec4(1.0f, 1.0f, 1.0f, 0.5f); // 50% opaque white
+            ImVec4 tint_col = use_text_color_for_tint ? ImGui::GetStyleColorVec4(ImGuiCol_Text) : ImVec4(1.0f, 1.0f, 1.0f, 1.0f);   // No tint
+            ImVec4 border_col = ImGui::GetStyleColorVec4(ImGuiCol_Border);
             ImGui::Image(my_tex_id, ImVec2(my_tex_w, my_tex_h), uv_min, uv_max, tint_col, border_col);
             if (ImGui::IsItemHovered())
             {

imgui_internal.h

@@ -1671,23 +1671,16 @@ enum ImGuiDebugLogFlags_
 
 struct ImGuiMetricsConfig
 {
-    bool        ShowDebugLog;
-    bool        ShowStackTool;
-    bool        ShowWindowsRects;
-    bool        ShowWindowsBeginOrder;
-    bool        ShowTablesRects;
-    bool        ShowDrawCmdMesh;
-    bool        ShowDrawCmdBoundingBoxes;
-    int         ShowWindowsRectsType;
-    int         ShowTablesRectsType;
-
-    ImGuiMetricsConfig()
-    {
-        ShowDebugLog = ShowStackTool = ShowWindowsRects = ShowWindowsBeginOrder = ShowTablesRects = false;
-        ShowDrawCmdMesh = true;
-        ShowDrawCmdBoundingBoxes = true;
-        ShowWindowsRectsType = ShowTablesRectsType = -1;
-    }
+    bool        ShowDebugLog = false;
+    bool        ShowStackTool = false;
+    bool        ShowWindowsRects = false;
+    bool        ShowWindowsBeginOrder = false;
+    bool        ShowTablesRects = false;
+    bool        ShowDrawCmdMesh = true;
+    bool        ShowDrawCmdBoundingBoxes = true;
+    bool        ShowAtlasTintedWithTextColor = false;
+    int         ShowWindowsRectsType = -1;
+    int         ShowTablesRectsType = -1;
 };
 
 struct ImGuiStackLevelInfo