2 * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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27 #import "platform/mac/ColorMac.h"
29 #import <wtf/RetainPtr.h>
30 #import <wtf/StdLibExtras.h>
34 // NSColor calls don't throw, so no need to block Cocoa exceptions in this file
36 NSColor *nsColor(const Color& color)
38 RGBA32 c = color.rgb();
41 // Need this to avoid returning nil because cachedRGBAValues will default to 0.
42 DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, clearColor, ([NSColor colorWithDeviceRed:0 green:0 blue:0 alpha:0]));
43 return clearColor.get();
46 DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, blackColor, ([NSColor colorWithDeviceRed:0 green:0 blue:0 alpha:1]));
47 return blackColor.get();
50 DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, whiteColor, ([NSColor colorWithDeviceRed:1 green:1 blue:1 alpha:1]));
51 return whiteColor.get();
54 const int cacheSize = 32;
55 static unsigned cachedRGBAValues[cacheSize];
56 static RetainPtr<NSColor>* cachedColors = new RetainPtr<NSColor>[cacheSize];
58 for (int i = 0; i != cacheSize; ++i) {
59 if (cachedRGBAValues[i] == c)
60 return cachedColors[i].get();
63 NSColor *result = [NSColor colorWithDeviceRed:static_cast<CGFloat>(color.red()) / 255
64 green:static_cast<CGFloat>(color.green()) / 255
65 blue:static_cast<CGFloat>(color.blue()) / 255
66 alpha:static_cast<CGFloat>(color.alpha()) / 255];
69 cachedRGBAValues[cursor] = c;
70 cachedColors[cursor] = result;
71 if (++cursor == cacheSize)