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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import <CoreGraphics/CoreGraphics.h>
#import <UIKit/UIKit.h>
#include "base/mac/scoped_cftyperef.h"
#include "skia/ext/skia_utils_ios.h"
#include "ui/gfx/image/image_unittest_util.h"
namespace gfx {
namespace test {
SkColor GetPlatformImageColor(PlatformImage image, int x, int y) {
// Start by extracting the target pixel into a 1x1 CGImage.
base::mac::ScopedCFTypeRef<CGImageRef> pixel_image(
CGImageCreateWithImageInRect(image.CGImage, CGRectMake(x, y, 1, 1)));
// Draw that pixel into a 1x1 bitmap context.
base::mac::ScopedCFTypeRef<CGColorSpaceRef> color_space(
CGColorSpaceCreateDeviceRGB());
base::mac::ScopedCFTypeRef<CGContextRef> bitmap_context(
CGBitmapContextCreate(/*data=*/ NULL,
/*width=*/ 1, /*height=*/ 1,
/*bitsPerComponent=*/ 8, /*bytesPerRow=*/ 4,
color_space,
kCGImageAlphaPremultipliedFirst |
kCGBitmapByteOrder32Host));
CGContextDrawImage(bitmap_context, CGRectMake(0, 0, 1, 1), pixel_image);
// The CGBitmapContext has the same memory layout as SkColor, so we can just
// read an SkColor straight out of the context.
SkColor* data =
reinterpret_cast<SkColor*>(CGBitmapContextGetData(bitmap_context));
return *data;
}
} // namespace test
} // namespace gfx
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