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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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/bitmap_platform_device_mac.h" | 5 #include "skia/ext/bitmap_platform_device_mac.h" |
6 | 6 |
7 #include <time.h> | 7 #include <time.h> |
8 | 8 |
9 #include "SkMatrix.h" | 9 #include "SkMatrix.h" |
10 #include "SkRegion.h" | 10 #include "SkRegion.h" |
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161 bitmap.setIsOpaque(is_opaque); | 161 bitmap.setIsOpaque(is_opaque); |
162 | 162 |
163 if (is_opaque) { | 163 if (is_opaque) { |
164 #ifndef NDEBUG | 164 #ifndef NDEBUG |
165 // To aid in finding bugs, we set the background color to something | 165 // To aid in finding bugs, we set the background color to something |
166 // obviously wrong so it will be noticable when it is not cleared | 166 // obviously wrong so it will be noticable when it is not cleared |
167 bitmap.eraseARGB(255, 0, 255, 128); // bright bluish green | 167 bitmap.eraseARGB(255, 0, 255, 128); // bright bluish green |
168 #endif | 168 #endif |
169 } | 169 } |
170 | 170 |
171 CGColorSpaceRef color_space = | 171 if (!context) { |
172 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB); | 172 CGColorSpaceRef color_space = |
173 // allocate a bitmap context with 4 components per pixel (BGRA). Apple | 173 CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB); |
174 // recommends these flags for improved CG performance. | 174 // allocate a bitmap context with 4 components per pixel (BGRA). Apple |
175 CGContextRef bitmap_context = | 175 // recommends these flags for improved CG performance. |
176 CGBitmapContextCreate(data, width, height, 8, width*4, | 176 context = |
177 color_space, | 177 CGBitmapContextCreate(data, width, height, 8, width*4, |
178 kCGImageAlphaPremultipliedFirst | | 178 color_space, |
179 kCGBitmapByteOrder32Host); | 179 kCGImageAlphaPremultipliedFirst | |
| 180 kCGBitmapByteOrder32Host); |
180 | 181 |
181 // Change the coordinate system to match WebCore's | 182 // Change the coordinate system to match WebCore's |
182 CGContextTranslateCTM(bitmap_context, 0, height); | 183 CGContextTranslateCTM(context, 0, height); |
183 CGContextScaleCTM(bitmap_context, 1.0, -1.0); | 184 CGContextScaleCTM(context, 1.0, -1.0); |
184 CGColorSpaceRelease(color_space); | 185 CGColorSpaceRelease(color_space); |
| 186 } |
185 | 187 |
186 // The device object will take ownership of the graphics context. | 188 // The device object will take ownership of the graphics context. |
187 return new BitmapPlatformDeviceMac( | 189 return new BitmapPlatformDeviceMac( |
188 new BitmapPlatformDeviceMacData(bitmap_context), bitmap); | 190 new BitmapPlatformDeviceMacData(context), bitmap); |
189 } | 191 } |
190 | 192 |
191 // The device will own the bitmap, which corresponds to also owning the pixel | 193 // The device will own the bitmap, which corresponds to also owning the pixel |
192 // data. Therefore, we do not transfer ownership to the SkDevice's bitmap. | 194 // data. Therefore, we do not transfer ownership to the SkDevice's bitmap. |
193 BitmapPlatformDeviceMac::BitmapPlatformDeviceMac( | 195 BitmapPlatformDeviceMac::BitmapPlatformDeviceMac( |
194 BitmapPlatformDeviceMacData* data, const SkBitmap& bitmap) | 196 BitmapPlatformDeviceMacData* data, const SkBitmap& bitmap) |
195 : PlatformDeviceMac(bitmap), | 197 : PlatformDeviceMac(bitmap), |
196 data_(data) { | 198 data_(data) { |
197 } | 199 } |
198 | 200 |
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288 size_t offset = (i + bitmap_start_y) * row_words + bitmap_start_x; | 290 size_t offset = (i + bitmap_start_y) * row_words + bitmap_start_x; |
289 for (int j = 0; j < width; j++) { | 291 for (int j = 0; j < width; j++) { |
290 adjustor(data + offset + j); | 292 adjustor(data + offset + j); |
291 } | 293 } |
292 } | 294 } |
293 } | 295 } |
294 } | 296 } |
295 | 297 |
296 } // namespace skia | 298 } // namespace skia |
297 | 299 |
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