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1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #import <CoreGraphics/CoreGraphics.h> | |
6 #import <UIKit/UIKit.h> | |
7 | |
8 #include "base/mac/scoped_cftyperef.h" | |
9 #include "skia/ext/skia_utils_ios.h" | |
10 #include "ui/gfx/image/image_unittest_util.h" | |
11 | |
12 namespace gfx { | |
13 namespace test { | |
14 | |
15 SkColor GetPlatformImageColor(PlatformImage image, int x, int y) { | |
16 // Start by extracting the target pixel into a 1x1 CGImage. | |
17 base::ScopedCFTypeRef<CGImageRef> pixel_image( | |
18 CGImageCreateWithImageInRect(image.CGImage, CGRectMake(x, y, 1, 1))); | |
19 | |
20 // Draw that pixel into a 1x1 bitmap context. | |
21 base::ScopedCFTypeRef<CGColorSpaceRef> color_space( | |
22 CGColorSpaceCreateDeviceRGB()); | |
23 base::ScopedCFTypeRef<CGContextRef> bitmap_context(CGBitmapContextCreate( | |
24 /*data=*/ NULL, | |
25 /*width=*/ 1, | |
26 /*height=*/ 1, | |
27 /*bitsPerComponent=*/ 8, | |
28 /*bytesPerRow=*/ 4, | |
29 color_space, | |
30 kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host)); | |
31 CGContextDrawImage(bitmap_context, CGRectMake(0, 0, 1, 1), pixel_image); | |
32 | |
33 // The CGBitmapContext has the same memory layout as SkColor, so we can just | |
34 // read an SkColor straight out of the context. | |
35 SkColor* data = | |
36 reinterpret_cast<SkColor*>(CGBitmapContextGetData(bitmap_context)); | |
37 return *data; | |
38 } | |
39 | |
40 } // namespace test | |
41 } // namespace gfx | |
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