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/*
* 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 "ColorMac.h"
#import <wtf/RetainPtr.h>
#import <wtf/StdLibExtras.h>
namespace WebCore {
// NSColor calls don't throw, so no need to block Cocoa exceptions in this file
static bool useOldAquaFocusRingColor;
RGBA32 oldAquaFocusRingColor()
{
return 0xFF7DADD9;
}
void setUsesTestModeFocusRingColor(bool newValue)
{
useOldAquaFocusRingColor = newValue;
}
bool usesTestModeFocusRingColor()
{
return useOldAquaFocusRingColor;
}
static RGBA32 makeRGBAFromNSColor(NSColor *c)
{
CGFloat redComponent;
CGFloat greenComponent;
CGFloat blueComponent;
CGFloat alpha;
[c getRed:&redComponent green:&greenComponent blue:&blueComponent alpha:&alpha];
return makeRGBA(255 * redComponent, 255 * greenComponent, 255 * blueComponent, 255 * alpha);
}
Color colorFromNSColor(NSColor *c)
{
return Color(makeRGBAFromNSColor(c));
}
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;
}
}
}
static CGColorRef CGColorFromNSColor(NSColor *color)
{
// This needs to always use device colorspace so it can de-calibrate the color for
// CGColor to possibly recalibrate it.
CGFloat components[4];
NSColor *deviceColor = [color colorUsingColorSpaceName:NSDeviceRGBColorSpace];
[deviceColor getRed:&components[0] green:&components[1] blue:&components[2] alpha:&components[3]];
static CGColorSpaceRef deviceRGBColorSpace = CGColorSpaceCreateDeviceRGB();
CGColorRef cgColor = CGColorCreate(deviceRGBColorSpace, components);
return cgColor;
}
CGColorRef createCGColor(const Color& c)
{
// We could directly create a CGColor here, but that would
// skip any RGB caching the nsColor method does. A direct
// creation could be investigated for a possible performance win.
return CGColorFromNSColor(nsColor(c));
}
} // namespace WebCore
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