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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "skia/ext/skia_utils_mac.h" | 5 #include "skia/ext/skia_utils_mac.h" |
6 | 6 |
7 #import <AppKit/AppKit.h> | 7 #import <AppKit/AppKit.h> |
8 | 8 |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/mac/scoped_cftyperef.h" | 10 #include "base/mac/scoped_cftyperef.h" |
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25 // Only image or image_rep should be provided, not both. | 25 // Only image or image_rep should be provided, not both. |
26 DCHECK((image != 0) ^ (image_rep != 0)); | 26 DCHECK((image != 0) ^ (image_rep != 0)); |
27 | 27 |
28 SkBitmap bitmap; | 28 SkBitmap bitmap; |
29 bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width, size.height); | 29 bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width, size.height); |
30 if (!bitmap.allocPixels()) | 30 if (!bitmap.allocPixels()) |
31 return bitmap; // Return |bitmap| which should respond true to isNull(). | 31 return bitmap; // Return |bitmap| which should respond true to isNull(). |
32 | 32 |
33 bitmap.setIsOpaque(is_opaque); | 33 bitmap.setIsOpaque(is_opaque); |
34 | 34 |
35 base::mac::ScopedCFTypeRef<CGColorSpaceRef> color_space( | 35 base::ScopedCFTypeRef<CGColorSpaceRef> color_space( |
36 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); | 36 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); |
37 void* data = bitmap.getPixels(); | 37 void* data = bitmap.getPixels(); |
38 | 38 |
39 // Allocate a bitmap context with 4 components per pixel (BGRA). Apple | 39 // Allocate a bitmap context with 4 components per pixel (BGRA). Apple |
40 // recommends these flags for improved CG performance. | 40 // recommends these flags for improved CG performance. |
41 #define HAS_ARGB_SHIFTS(a, r, g, b) \ | 41 #define HAS_ARGB_SHIFTS(a, r, g, b) \ |
42 (SK_A32_SHIFT == (a) && SK_R32_SHIFT == (r) \ | 42 (SK_A32_SHIFT == (a) && SK_R32_SHIFT == (r) \ |
43 && SK_G32_SHIFT == (g) && SK_B32_SHIFT == (b)) | 43 && SK_G32_SHIFT == (g) && SK_B32_SHIFT == (b)) |
44 #if defined(SK_CPU_LENDIAN) && HAS_ARGB_SHIFTS(24, 16, 8, 0) | 44 #if defined(SK_CPU_LENDIAN) && HAS_ARGB_SHIFTS(24, 16, 8, 0) |
45 base::mac::ScopedCFTypeRef<CGContextRef> context( | 45 base::ScopedCFTypeRef<CGContextRef> context(CGBitmapContextCreate( |
46 CGBitmapContextCreate(data, size.width, size.height, 8, size.width*4, | 46 data, |
47 color_space, | 47 size.width, |
48 kCGImageAlphaPremultipliedFirst | | 48 size.height, |
49 kCGBitmapByteOrder32Host)); | 49 8, |
| 50 size.width * 4, |
| 51 color_space, |
| 52 kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host)); |
50 #else | 53 #else |
51 #error We require that Skia's and CoreGraphics's recommended \ | 54 #error We require that Skia's and CoreGraphics's recommended \ |
52 image memory layout match. | 55 image memory layout match. |
53 #endif | 56 #endif |
54 #undef HAS_ARGB_SHIFTS | 57 #undef HAS_ARGB_SHIFTS |
55 | 58 |
56 // Something went really wrong. Best guess is that the bitmap data is invalid. | 59 // Something went really wrong. Best guess is that the bitmap data is invalid. |
57 DCHECK(context); | 60 DCHECK(context); |
58 | 61 |
59 [NSGraphicsContext saveGraphicsState]; | 62 [NSGraphicsContext saveGraphicsState]; |
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205 SkBitmap NSImageToSkBitmap(NSImage* image, NSSize size, bool is_opaque) { | 208 SkBitmap NSImageToSkBitmap(NSImage* image, NSSize size, bool is_opaque) { |
206 return NSImageOrNSImageRepToSkBitmap(image, nil, size, is_opaque); | 209 return NSImageOrNSImageRepToSkBitmap(image, nil, size, is_opaque); |
207 } | 210 } |
208 | 211 |
209 SkBitmap NSImageRepToSkBitmap( | 212 SkBitmap NSImageRepToSkBitmap( |
210 NSImageRep* image_rep, NSSize size, bool is_opaque) { | 213 NSImageRep* image_rep, NSSize size, bool is_opaque) { |
211 return NSImageOrNSImageRepToSkBitmap(nil, image_rep, size, is_opaque); | 214 return NSImageOrNSImageRepToSkBitmap(nil, image_rep, size, is_opaque); |
212 } | 215 } |
213 | 216 |
214 NSBitmapImageRep* SkBitmapToNSBitmapImageRep(const SkBitmap& skiaBitmap) { | 217 NSBitmapImageRep* SkBitmapToNSBitmapImageRep(const SkBitmap& skiaBitmap) { |
215 base::mac::ScopedCFTypeRef<CGColorSpaceRef> color_space( | 218 base::ScopedCFTypeRef<CGColorSpaceRef> color_space( |
216 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); | 219 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); |
217 return SkBitmapToNSBitmapImageRepWithColorSpace(skiaBitmap, color_space); | 220 return SkBitmapToNSBitmapImageRepWithColorSpace(skiaBitmap, color_space); |
218 } | 221 } |
219 | 222 |
220 NSBitmapImageRep* SkBitmapToNSBitmapImageRepWithColorSpace( | 223 NSBitmapImageRep* SkBitmapToNSBitmapImageRepWithColorSpace( |
221 const SkBitmap& skiaBitmap, | 224 const SkBitmap& skiaBitmap, |
222 CGColorSpaceRef colorSpace) { | 225 CGColorSpaceRef colorSpace) { |
223 // First convert SkBitmap to CGImageRef. | 226 // First convert SkBitmap to CGImageRef. |
224 base::mac::ScopedCFTypeRef<CGImageRef> cgimage( | 227 base::ScopedCFTypeRef<CGImageRef> cgimage( |
225 SkCreateCGImageRefWithColorspace(skiaBitmap, colorSpace)); | 228 SkCreateCGImageRefWithColorspace(skiaBitmap, colorSpace)); |
226 | 229 |
227 // Now convert to NSBitmapImageRep. | 230 // Now convert to NSBitmapImageRep. |
228 scoped_nsobject<NSBitmapImageRep> bitmap( | 231 scoped_nsobject<NSBitmapImageRep> bitmap( |
229 [[NSBitmapImageRep alloc] initWithCGImage:cgimage]); | 232 [[NSBitmapImageRep alloc] initWithCGImage:cgimage]); |
230 return [bitmap.release() autorelease]; | 233 return [bitmap.release() autorelease]; |
231 } | 234 } |
232 | 235 |
233 NSImage* SkBitmapToNSImageWithColorSpace(const SkBitmap& skiaBitmap, | 236 NSImage* SkBitmapToNSImageWithColorSpace(const SkBitmap& skiaBitmap, |
234 CGColorSpaceRef colorSpace) { | 237 CGColorSpaceRef colorSpace) { |
235 if (skiaBitmap.isNull()) | 238 if (skiaBitmap.isNull()) |
236 return nil; | 239 return nil; |
237 | 240 |
238 scoped_nsobject<NSImage> image([[NSImage alloc] init]); | 241 scoped_nsobject<NSImage> image([[NSImage alloc] init]); |
239 [image addRepresentation: | 242 [image addRepresentation: |
240 SkBitmapToNSBitmapImageRepWithColorSpace(skiaBitmap, colorSpace)]; | 243 SkBitmapToNSBitmapImageRepWithColorSpace(skiaBitmap, colorSpace)]; |
241 [image setSize:NSMakeSize(skiaBitmap.width(), skiaBitmap.height())]; | 244 [image setSize:NSMakeSize(skiaBitmap.width(), skiaBitmap.height())]; |
242 return [image.release() autorelease]; | 245 return [image.release() autorelease]; |
243 } | 246 } |
244 | 247 |
245 NSImage* SkBitmapToNSImage(const SkBitmap& skiaBitmap) { | 248 NSImage* SkBitmapToNSImage(const SkBitmap& skiaBitmap) { |
246 base::mac::ScopedCFTypeRef<CGColorSpaceRef> colorSpace( | 249 base::ScopedCFTypeRef<CGColorSpaceRef> colorSpace( |
247 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); | 250 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)); |
248 return SkBitmapToNSImageWithColorSpace(skiaBitmap, colorSpace.get()); | 251 return SkBitmapToNSImageWithColorSpace(skiaBitmap, colorSpace.get()); |
249 } | 252 } |
250 | 253 |
251 SkiaBitLocker::SkiaBitLocker(SkCanvas* canvas) | 254 SkiaBitLocker::SkiaBitLocker(SkCanvas* canvas) |
252 : canvas_(canvas), | 255 : canvas_(canvas), |
253 cgContext_(0) { | 256 cgContext_(0) { |
254 } | 257 } |
255 | 258 |
256 SkiaBitLocker::~SkiaBitLocker() { | 259 SkiaBitLocker::~SkiaBitLocker() { |
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356 useDeviceBits_ = deviceBits.getPixels(); | 359 useDeviceBits_ = deviceBits.getPixels(); |
357 if (useDeviceBits_) { | 360 if (useDeviceBits_) { |
358 bitmap_ = deviceBits; | 361 bitmap_ = deviceBits; |
359 bitmap_.lockPixels(); | 362 bitmap_.lockPixels(); |
360 } else { | 363 } else { |
361 bitmap_.setConfig( | 364 bitmap_.setConfig( |
362 SkBitmap::kARGB_8888_Config, deviceBits.width(), deviceBits.height()); | 365 SkBitmap::kARGB_8888_Config, deviceBits.width(), deviceBits.height()); |
363 bitmap_.allocPixels(); | 366 bitmap_.allocPixels(); |
364 bitmap_.eraseColor(0); | 367 bitmap_.eraseColor(0); |
365 } | 368 } |
366 base::mac::ScopedCFTypeRef<CGColorSpaceRef> colorSpace( | 369 base::ScopedCFTypeRef<CGColorSpaceRef> colorSpace( |
367 CGColorSpaceCreateDeviceRGB()); | 370 CGColorSpaceCreateDeviceRGB()); |
368 cgContext_ = CGBitmapContextCreate(bitmap_.getPixels(), bitmap_.width(), | 371 cgContext_ = CGBitmapContextCreate(bitmap_.getPixels(), bitmap_.width(), |
369 bitmap_.height(), 8, bitmap_.rowBytes(), colorSpace, | 372 bitmap_.height(), 8, bitmap_.rowBytes(), colorSpace, |
370 kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst); | 373 kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst); |
371 | 374 |
372 // Apply device matrix. | 375 // Apply device matrix. |
373 CGAffineTransform contentsTransform = CGAffineTransformMakeScale(1, -1); | 376 CGAffineTransform contentsTransform = CGAffineTransformMakeScale(1, -1); |
374 contentsTransform = CGAffineTransformTranslate(contentsTransform, 0, | 377 contentsTransform = CGAffineTransformTranslate(contentsTransform, 0, |
375 -device->height()); | 378 -device->height()); |
376 CGContextConcatCTM(cgContext_, contentsTransform); | 379 CGContextConcatCTM(cgContext_, contentsTransform); |
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405 // Apply content matrix. | 408 // Apply content matrix. |
406 SkMatrix skMatrix = canvas_->getTotalMatrix(); | 409 SkMatrix skMatrix = canvas_->getTotalMatrix(); |
407 skMatrix.postTranslate(-SkIntToScalar(pt.fX), -SkIntToScalar(pt.fY)); | 410 skMatrix.postTranslate(-SkIntToScalar(pt.fX), -SkIntToScalar(pt.fY)); |
408 CGAffineTransform affine = SkMatrixToCGAffineTransform(skMatrix); | 411 CGAffineTransform affine = SkMatrixToCGAffineTransform(skMatrix); |
409 CGContextConcatCTM(cgContext_, affine); | 412 CGContextConcatCTM(cgContext_, affine); |
410 | 413 |
411 return cgContext_; | 414 return cgContext_; |
412 } | 415 } |
413 | 416 |
414 } // namespace gfx | 417 } // namespace gfx |
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