Nav: Fixed nav highlight clipping (affected non non-menu items within menubar) (#323)

imgui.cpp

@@ -2084,12 +2084,14 @@ void ImGui::RenderNavHighlight(const ImRect& bb, ImGuiID id)
         return;
     ImGuiWindow* window = ImGui::GetCurrentWindow();
 
-    ImRect clip_rect(window->InnerRect.Min - ImVec2(4,4), window->InnerRect.Max + ImVec2(4,4));
-    if (!window->ClipRect.Contains(clip_rect))
-        window->DrawList->PushClipRect(clip_rect.Min, clip_rect.Max);
-    window->DrawList->AddRect(bb.Min - ImVec2(3,3), bb.Max + ImVec2(3,3), GetColorU32(ImGuiCol_NavHighlight), g.Style.FrameRounding, 0x0F, 2.0f);
+    const float THICKNESS = 2.0f;
+    const float DISTANCE = 3.0f + THICKNESS * 0.5f;
+    ImRect display_rect(bb.Min - ImVec2(DISTANCE,DISTANCE), bb.Max + ImVec2(DISTANCE,DISTANCE));
+    if (!window->ClipRect.Contains(display_rect))
+        window->DrawList->PushClipRect(display_rect.Min, display_rect.Max);
+    window->DrawList->AddRect(display_rect.Min + ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), display_rect.Max - ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), GetColorU32(ImGuiCol_NavHighlight), g.Style.FrameRounding, 0x0F, THICKNESS);
     //window->DrawList->AddRect(g.NavRefRectScreen.Min, g.NavRefRectScreen.Max, IM_COL32(255,0,0,255));
-    if (!window->ClipRect.Contains(clip_rect))
+    if (!window->ClipRect.Contains(display_rect))
         window->DrawList->PopClipRect();
 }