/* * Copyright (C) 2003, 2004, 2005, 2006 Apple 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 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 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" #if USE(APPKIT) #import "LocalCurrentGraphicsContext.h" #import <wtf/BlockObjCExceptions.h> #import <wtf/NeverDestroyed.h> #import <wtf/RetainPtr.h> #import <wtf/StdLibExtras.h> namespace WebCore { static bool useOldAquaFocusRingColor; Color oldAquaFocusRingColor() { return 0xFF7DADD9; } void setUsesTestModeFocusRingColor(bool newValue) { useOldAquaFocusRingColor = newValue; } bool usesTestModeFocusRingColor() { return useOldAquaFocusRingColor; } static RGBA32 makeRGBAFromNSColor(NSColor *color) { ASSERT_ARG(color, color); CGFloat redComponent; CGFloat greenComponent; CGFloat blueComponent; CGFloat alpha; BEGIN_BLOCK_OBJC_EXCEPTIONS; NSColor *rgbColor = [color colorUsingColorSpace:NSColorSpace.deviceRGBColorSpace]; if (!rgbColor) { // The color space conversion above can fail if the NSColor is in the NSPatternColorSpace. // These colors are actually a repeating pattern, not just a solid color. To workaround // this we simply draw a one pixel image of the color and use that pixel's color. // FIXME: It might be better to use an average of the colors in the pattern instead. RetainPtr<NSBitmapImageRep> offscreenRep = adoptNS([[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil pixelsWide:1 pixelsHigh:1 bitsPerSample:8 samplesPerPixel:4 hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace bytesPerRow:4 bitsPerPixel:32]); GraphicsContext bitmapContext([NSGraphicsContext graphicsContextWithBitmapImageRep:offscreenRep.get()].CGContext); LocalCurrentGraphicsContext localContext(bitmapContext); [color drawSwatchInRect:NSMakeRect(0, 0, 1, 1)]; NSUInteger pixel[4]; [offscreenRep getPixel:pixel atX:0 y:0]; return makeRGBA(pixel[0], pixel[1], pixel[2], pixel[3]); } [rgbColor getRed:&redComponent green:&greenComponent blue:&blueComponent alpha:&alpha]; END_BLOCK_OBJC_EXCEPTIONS; static const double scaleFactor = nextafter(256.0, 0.0); return makeRGBA(scaleFactor * redComponent, scaleFactor * greenComponent, scaleFactor * blueComponent, scaleFactor * alpha); } Color colorFromNSColor(NSColor *color) { return Color(makeRGBAFromNSColor(color)); } Color semanticColorFromNSColor(NSColor *color) { return Color(makeRGBAFromNSColor(color), Color::Semantic); } NSColor *nsColor(const Color& color) { if (!color.isValid()) { // Need this to avoid returning nil because cachedRGBAValues will default to 0. static NeverDestroyed<NSColor *> clearColor = [[NSColor colorWithSRGBRed:0 green:0 blue:0 alpha:0] retain]; return clearColor; } if (Color::isBlackColor(color)) { static NeverDestroyed<NSColor *> blackColor = [[NSColor colorWithSRGBRed:0 green:0 blue:0 alpha:1] retain]; return blackColor; } if (Color::isWhiteColor(color)) { static NeverDestroyed<NSColor *> whiteColor = [[NSColor colorWithSRGBRed:1 green:1 blue:1 alpha:1] retain]; return whiteColor; } const int cacheSize = 32; static unsigned cachedRGBAValues[cacheSize]; static RetainPtr<NSColor>* cachedColors = new RetainPtr<NSColor>[cacheSize]; unsigned hash = color.hash(); for (int i = 0; i < cacheSize; ++i) { if (cachedRGBAValues[i] == hash) return cachedColors[i].get(); } NSColor *result = [NSColor colorWithCGColor:cachedCGColor(color)]; static int cursor; cachedRGBAValues[cursor] = hash; cachedColors[cursor] = result; if (++cursor == cacheSize) cursor = 0; return result; } } // namespace WebCore #endif // USE(APPKIT)