| /* |
| * 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 |