| /* |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 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. |
| */ |
| |
| #include "config.h" |
| #include "Color.h" |
| |
| #if USE(CG) |
| |
| #include "GraphicsContextCG.h" |
| #include <wtf/Assertions.h> |
| #include <wtf/RetainPtr.h> |
| #include <wtf/TinyLRUCache.h> |
| #include <pal/spi/cg/CoreGraphicsSPI.h> |
| #include <wtf/StdLibExtras.h> |
| |
| namespace WebCore { |
| static CGColorRef leakCGColor(const Color&) CF_RETURNS_RETAINED; |
| } |
| |
| namespace WTF { |
| |
| template<> |
| RetainPtr<CGColorRef> TinyLRUCachePolicy<WebCore::Color, RetainPtr<CGColorRef>>::createValueForKey(const WebCore::Color& color) |
| { |
| return adoptCF(WebCore::leakCGColor(color)); |
| } |
| |
| } // namespace WTF |
| |
| namespace WebCore { |
| |
| static RGBA32 makeRGBAFromCGColor(CGColorRef color) |
| { |
| size_t numComponents = CGColorGetNumberOfComponents(color); |
| const CGFloat* components = CGColorGetComponents(color); |
| |
| float r = 0; |
| float g = 0; |
| float b = 0; |
| float a = 0; |
| |
| switch (numComponents) { |
| case 2: |
| r = g = b = components[0]; |
| a = components[1]; |
| break; |
| case 4: |
| r = components[0]; |
| g = components[1]; |
| b = components[2]; |
| a = components[3]; |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| |
| static const double scaleFactor = nextafter(256.0, 0.0); |
| return makeRGBA(r * scaleFactor, g * scaleFactor, b * scaleFactor, a * scaleFactor); |
| } |
| |
| Color::Color(CGColorRef color) |
| { |
| if (!color) { |
| m_colorData.rgbaAndFlags = invalidRGBAColor; |
| return; |
| } |
| |
| setRGB(makeRGBAFromCGColor(color)); |
| } |
| |
| Color::Color(CGColorRef color, SemanticTag) |
| { |
| if (!color) { |
| m_colorData.rgbaAndFlags = invalidRGBAColor; |
| return; |
| } |
| |
| setRGB(makeRGBAFromCGColor(color)); |
| setIsSemantic(); |
| } |
| |
| static CGColorRef leakCGColor(const Color& color) |
| { |
| CGFloat components[4]; |
| if (color.isExtended()) { |
| ExtendedColor& extendedColor = color.asExtended(); |
| components[0] = extendedColor.red(); |
| components[1] = extendedColor.green(); |
| components[2] = extendedColor.blue(); |
| components[3] = extendedColor.alpha(); |
| switch (extendedColor.colorSpace()) { |
| case ColorSpace::SRGB: |
| return CGColorCreate(sRGBColorSpaceRef(), components); |
| case ColorSpace::DisplayP3: |
| return CGColorCreate(displayP3ColorSpaceRef(), components); |
| case ColorSpace::LinearRGB: |
| // FIXME: Do we ever create CGColorRefs in these spaces? It may only be ImageBuffers. |
| return CGColorCreate(sRGBColorSpaceRef(), components); |
| } |
| } |
| |
| color.getRGBA(components[0], components[1], components[2], components[3]); |
| return CGColorCreate(sRGBColorSpaceRef(), components); |
| } |
| |
| CGColorRef cachedCGColor(const Color& color) |
| { |
| if (!color.isExtended()) { |
| switch (color.rgb().value()) { |
| case Color::transparent.value(): { |
| static CGColorRef transparentCGColor = leakCGColor(color); |
| return transparentCGColor; |
| } |
| case Color::black.value(): { |
| static CGColorRef blackCGColor = leakCGColor(color); |
| return blackCGColor; |
| } |
| case Color::white.value(): { |
| static CGColorRef whiteCGColor = leakCGColor(color); |
| return whiteCGColor; |
| } |
| } |
| } |
| |
| ASSERT(color.isExtended() || color.rgb().value()); |
| |
| static NeverDestroyed<TinyLRUCache<Color, RetainPtr<CGColorRef>, 32>> cache; |
| return cache.get().get(color).get(); |
| } |
| |
| } |
| |
| #endif // USE(CG) |