blob: 7a1eef68aea068bd139a8abae3d940ec594a1142 [file] [log] [blame]
/*
* Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "platform/mac/ColorMac.h"
#import <wtf/RetainPtr.h>
#import <wtf/StdLibExtras.h>
namespace blink {
// NSColor calls don't throw, so no need to block Cocoa exceptions in this file
NSColor *nsColor(const Color& color)
{
RGBA32 c = color.rgb();
switch (c) {
case 0: {
// Need this to avoid returning nil because cachedRGBAValues will default to 0.
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, clearColor, ([NSColor colorWithDeviceRed:0 green:0 blue:0 alpha:0]));
return clearColor.get();
}
case Color::black: {
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, blackColor, ([NSColor colorWithDeviceRed:0 green:0 blue:0 alpha:1]));
return blackColor.get();
}
case Color::white: {
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, whiteColor, ([NSColor colorWithDeviceRed:1 green:1 blue:1 alpha:1]));
return whiteColor.get();
}
default: {
const int cacheSize = 32;
static unsigned cachedRGBAValues[cacheSize];
static RetainPtr<NSColor>* cachedColors = new RetainPtr<NSColor>[cacheSize];
for (int i = 0; i != cacheSize; ++i) {
if (cachedRGBAValues[i] == c)
return cachedColors[i].get();
}
NSColor *result = [NSColor colorWithDeviceRed:static_cast<CGFloat>(color.red()) / 255
green:static_cast<CGFloat>(color.green()) / 255
blue:static_cast<CGFloat>(color.blue()) / 255
alpha:static_cast<CGFloat>(color.alpha()) / 255];
static int cursor;
cachedRGBAValues[cursor] = c;
cachedColors[cursor] = result;
if (++cursor == cacheSize)
cursor = 0;
return result;
}
}
}
} // namespace blink