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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 "ui/gfx/blit.h" | 5 #include "ui/gfx/blit.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "build/build_config.h" | 8 #include "build/build_config.h" |
9 #include "skia/ext/platform_canvas.h" | 9 #include "skia/ext/platform_canvas.h" |
10 #include "skia/ext/platform_device.h" | 10 #include "skia/ext/platform_device.h" |
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28 bool HasClipOrTransform(const skia::PlatformCanvas& canvas) { | 28 bool HasClipOrTransform(const skia::PlatformCanvas& canvas) { |
29 if (!canvas.getTotalMatrix().isIdentity()) | 29 if (!canvas.getTotalMatrix().isIdentity()) |
30 return true; | 30 return true; |
31 | 31 |
32 const SkRegion& clip_region = canvas.getTotalClip(); | 32 const SkRegion& clip_region = canvas.getTotalClip(); |
33 if (clip_region.isEmpty() || clip_region.isComplex()) | 33 if (clip_region.isEmpty() || clip_region.isComplex()) |
34 return true; | 34 return true; |
35 | 35 |
36 // Now we know the clip is a regular rectangle, make sure it covers the | 36 // Now we know the clip is a regular rectangle, make sure it covers the |
37 // entire canvas. | 37 // entire canvas. |
38 const SkBitmap& bitmap = canvas.getTopPlatformDevice().accessBitmap(false); | 38 const SkBitmap& bitmap = canvas.getTopDevice().accessBitmap(false); |
39 const SkIRect& clip_bounds = clip_region.getBounds(); | 39 const SkIRect& clip_bounds = clip_region.getBounds(); |
40 if (clip_bounds.fLeft != 0 || clip_bounds.fTop != 0 || | 40 if (clip_bounds.fLeft != 0 || clip_bounds.fTop != 0 || |
41 clip_bounds.fRight != bitmap.width() || | 41 clip_bounds.fRight != bitmap.width() || |
42 clip_bounds.fBottom != bitmap.height()) | 42 clip_bounds.fBottom != bitmap.height()) |
43 return true; | 43 return true; |
44 | 44 |
45 return false; | 45 return false; |
46 } | 46 } |
47 | 47 |
48 } // namespace | 48 } // namespace |
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137 #elif defined(OS_POSIX) | 137 #elif defined(OS_POSIX) |
138 // Cairo has no nice scroll function so we do our own. On Mac it's possible to | 138 // Cairo has no nice scroll function so we do our own. On Mac it's possible to |
139 // use platform scroll code, but it's complex so we just use the same path | 139 // use platform scroll code, but it's complex so we just use the same path |
140 // here. Either way it will be software-only, so it shouldn't matter much. | 140 // here. Either way it will be software-only, so it shouldn't matter much. |
141 | 141 |
142 void ScrollCanvas(skia::PlatformCanvas* canvas, | 142 void ScrollCanvas(skia::PlatformCanvas* canvas, |
143 const gfx::Rect& in_clip, | 143 const gfx::Rect& in_clip, |
144 const gfx::Point& amount) { | 144 const gfx::Point& amount) { |
145 DCHECK(!HasClipOrTransform(*canvas)); // Don't support special stuff. | 145 DCHECK(!HasClipOrTransform(*canvas)); // Don't support special stuff. |
146 SkBitmap& bitmap = const_cast<SkBitmap&>( | 146 SkBitmap& bitmap = const_cast<SkBitmap&>( |
147 canvas->getTopPlatformDevice().accessBitmap(true)); | 147 canvas->getTopDevice().accessBitmap(true)); |
148 SkAutoLockPixels lock(bitmap); | 148 SkAutoLockPixels lock(bitmap); |
149 | 149 |
150 // We expect all coords to be inside the canvas, so clip here. | 150 // We expect all coords to be inside the canvas, so clip here. |
151 gfx::Rect clip = in_clip.Intersect( | 151 gfx::Rect clip = in_clip.Intersect( |
152 gfx::Rect(0, 0, bitmap.width(), bitmap.height())); | 152 gfx::Rect(0, 0, bitmap.width(), bitmap.height())); |
153 | 153 |
154 // Compute the set of pixels we'll actually end up painting. | 154 // Compute the set of pixels we'll actually end up painting. |
155 gfx::Rect dest_rect = clip; | 155 gfx::Rect dest_rect = clip; |
156 dest_rect.Offset(amount); | 156 dest_rect.Offset(amount); |
157 dest_rect = dest_rect.Intersect(clip); | 157 dest_rect = dest_rect.Intersect(clip); |
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185 memmove(bitmap.getAddr32(dest_rect.x(), dest_rect.y() + y), | 185 memmove(bitmap.getAddr32(dest_rect.x(), dest_rect.y() + y), |
186 bitmap.getAddr32(src_rect.x(), src_rect.y() + y), | 186 bitmap.getAddr32(src_rect.x(), src_rect.y() + y), |
187 row_bytes); | 187 row_bytes); |
188 } | 188 } |
189 } | 189 } |
190 } | 190 } |
191 | 191 |
192 #endif | 192 #endif |
193 | 193 |
194 } // namespace gfx | 194 } // namespace gfx |
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