ImDrawList: small debug-mode optimization when calling AddRect() without rounding + Selectable: small debug-mode optimization.

# Conflicts:
#	imgui_widgets.cpp

imgui.cpp

@@ -9577,9 +9577,6 @@ ImVec2 ImGui::GetCursorScreenPos()
     return window->DC.CursorPos;
 }
 
-// 2022/08/05: Setting cursor position also extend boundaries (via modifying CursorMaxPos) used to compute window size, group size etc.
-// I believe this was is a judicious choice but it's probably being relied upon (it has been the case since 1.31 and 1.50)
-// It would be sane if we requested user to use SetCursorPos() + Dummy(ImVec2(0,0)) to extend CursorMaxPos...
 void ImGui::SetCursorScreenPos(const ImVec2& pos)
 {
     ImGuiWindow* window = GetCurrentWindow();

imgui_draw.cpp

@@ -1348,11 +1348,13 @@ static inline ImDrawFlags FixRectCornerFlags(ImDrawFlags flags)
 }
 
 void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDrawFlags flags)
+{
+    if (rounding >= 0.5f)
     {
         flags = FixRectCornerFlags(flags);
         rounding = ImMin(rounding, ImFabs(b.x - a.x) * (((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f) - 1.0f);
         rounding = ImMin(rounding, ImFabs(b.y - a.y) * (((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f) - 1.0f);
-
+    }
     if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
     {
         PathLineTo(a);

imgui_widgets.cpp

@@ -6566,6 +6566,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
         const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
         RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
     }
+    if (g.NavId == id)
         RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
 
     if (span_all_columns && window->DC.CurrentColumns)