From 4e07c80645d02aa5560841d64351ecbefa67d0c1 Mon Sep 17 00:00:00 2001
From: Stefan Csomor <csomor@advancedconcepts.ch>
Date: Wed, 19 Dec 2012 15:30:40 +0000
Subject: [PATCH] HIThemeBrushCreateCGColor seems to have become very
 CPU-expensive, cache the results for better performance

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73208 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/osx/utils_osx.cpp | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/osx/utils_osx.cpp b/src/osx/utils_osx.cpp
index 7eb431ad86..da98e5371a 100644
--- a/src/osx/utils_osx.cpp
+++ b/src/osx/utils_osx.cpp
@@ -246,9 +246,26 @@ CGColorSpaceRef wxMacGetGenericRGBColorSpace()
 
 CGColorRef wxMacCreateCGColorFromHITheme( ThemeBrush brush )
 {
-    CGColorRef color ;
-    HIThemeBrushCreateCGColor( brush, &color );
-    return color;
+    const int maxcachedbrush = 58+5; // negative indices are for metabrushes, cache down to -5)
+    int brushindex = brush+5;
+    if ( brushindex < 0 || brush > brushindex )
+    {
+        CGColorRef color ;
+        HIThemeBrushCreateCGColor( brush, &color );
+        return color;
+    }
+    else
+    {
+        static bool inited = false;
+        static CGColorRef themecolors[maxcachedbrush+1];
+        if ( !inited )
+        {
+            for ( int i = 0 ; i <= maxcachedbrush ; ++i )
+                HIThemeBrushCreateCGColor( i-5, &themecolors[i] );
+            inited = true;
+        }
+        return CGColorRetain(themecolors[brushindex ]);
+    }
 }
 
 //---------------------------------------------------------------------------
-- 
2.45.2