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1 /* | 1 /* |
2 * Copyright (c) 2012, Google Inc. All rights reserved. | 2 * Copyright (c) 2012, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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149 SkColorFilter* colorFilter = paint.getColorFilter(); | 149 SkColorFilter* colorFilter = paint.getColorFilter(); |
150 if (colorFilter && !(colorFilter->getFlags() & SkColorFilter::kAlphaUnchange d_Flag)) | 150 if (colorFilter && !(colorFilter->getFlags() & SkColorFilter::kAlphaUnchange d_Flag)) |
151 return false; | 151 return false; |
152 return true; | 152 return true; |
153 } | 153 } |
154 | 154 |
155 // Returns true if there is a rectangular clip, with the result in |deviceClipRe ct|. | 155 // Returns true if there is a rectangular clip, with the result in |deviceClipRe ct|. |
156 static inline bool getDeviceClipAsRect(const GraphicsContext* context, SkRect& d eviceClipRect) | 156 static inline bool getDeviceClipAsRect(const GraphicsContext* context, SkRect& d eviceClipRect) |
157 { | 157 { |
158 // Get the current clip in device coordinate space. | 158 // Get the current clip in device coordinate space. |
159 if (!context->canvas()->isClipRect()) | 159 if (!context->canvas()->isClipRect()) { |
160 deviceClipRect.setEmpty(); | |
160 return false; | 161 return false; |
162 } | |
161 | 163 |
162 SkIRect deviceClipIRect; | 164 SkIRect deviceClipIRect; |
163 if (context->canvas()->getClipDeviceBounds(&deviceClipIRect)) | 165 if (context->canvas()->getClipDeviceBounds(&deviceClipIRect)) |
164 deviceClipRect.set(deviceClipIRect); | 166 deviceClipRect.set(deviceClipIRect); |
165 else | 167 else |
166 deviceClipRect.setEmpty(); | 168 deviceClipRect.setEmpty(); |
167 | 169 |
168 return true; | 170 return true; |
169 } | 171 } |
170 | 172 |
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324 SkRect deviceClipRect; | 326 SkRect deviceClipRect; |
325 getDeviceClipAsRect(context, deviceClipRect); | 327 getDeviceClipAsRect(context, deviceClipRect); |
326 markRectAsNonOpaque(deviceClipRect); | 328 markRectAsNonOpaque(deviceClipRect); |
327 } | 329 } |
328 | 330 |
329 void OpaqueRegionSkia::applyOpaqueRegionFromLayer(const GraphicsContext* context , const SkRect& layerOpaqueRect, const SkPaint& paint) | 331 void OpaqueRegionSkia::applyOpaqueRegionFromLayer(const GraphicsContext* context , const SkRect& layerOpaqueRect, const SkPaint& paint) |
330 { | 332 { |
331 SkRect deviceClipRect; | 333 SkRect deviceClipRect; |
332 bool deviceClipIsARect = getDeviceClipAsRect(context, deviceClipRect); | 334 bool deviceClipIsARect = getDeviceClipAsRect(context, deviceClipRect); |
333 | 335 |
334 if (deviceClipRect.isEmpty()) | 336 if (deviceClipIsARect && deviceClipRect.isEmpty()) |
335 return; | 337 return; |
336 | 338 |
337 SkRect sourceOpaqueRect = layerOpaqueRect; | 339 SkRect sourceOpaqueRect = layerOpaqueRect; |
338 // Save the opaque area in the destination, so we can preserve the parts of it under the source opaque area if possible. | 340 // Save the opaque area in the destination, so we can preserve the parts of it under the source opaque area if possible. |
339 SkRect destinationOpaqueRect = currentTrackingOpaqueRect(); | 341 SkRect destinationOpaqueRect = currentTrackingOpaqueRect(); |
340 | 342 |
341 bool outsideSourceOpaqueRectPreservesOpaque = xfermodePreservesOpaque(paint, false); | 343 bool outsideSourceOpaqueRectPreservesOpaque = xfermodePreservesOpaque(paint, false); |
342 if (!outsideSourceOpaqueRectPreservesOpaque) | 344 if (!outsideSourceOpaqueRectPreservesOpaque) { |
345 if (!deviceClipIsARect) { | |
346 markAllAsNonOpaque(); | |
347 return; | |
348 } | |
343 markRectAsNonOpaque(deviceClipRect); | 349 markRectAsNonOpaque(deviceClipRect); |
350 } | |
344 | 351 |
345 if (!deviceClipIsARect) | |
danakj
2014/07/30 13:31:26
We've lost this early out in some cases now. Can y
sohanjg
2014/07/31 15:44:34
Done.
| |
346 return; | |
347 if (!sourceOpaqueRect.intersect(deviceClipRect)) | 352 if (!sourceOpaqueRect.intersect(deviceClipRect)) |
348 return; | 353 return; |
349 | 354 |
350 bool sourceOpaqueRectDrawsOpaque = paintIsOpaque(paint, FillOnly, 0); | 355 bool sourceOpaqueRectDrawsOpaque = paintIsOpaque(paint, FillOnly, 0); |
351 bool sourceOpaqueRectXfersOpaque = xfermodeIsOpaque(paint, sourceOpaqueRectD rawsOpaque); | 356 bool sourceOpaqueRectXfersOpaque = xfermodeIsOpaque(paint, sourceOpaqueRectD rawsOpaque); |
352 bool sourceOpaqueRectPreservesOpaque = xfermodePreservesOpaque(paint, source OpaqueRectDrawsOpaque); | 357 bool sourceOpaqueRectPreservesOpaque = xfermodePreservesOpaque(paint, source OpaqueRectDrawsOpaque); |
353 | 358 |
354 // If the layer's opaque area is being drawn opaque in the layer below, then mark it opaque. Otherwise, | 359 // If the layer's opaque area is being drawn opaque in the layer below, then mark it opaque. Otherwise, |
355 // if it preserves opaque then keep the intersection of the two. | 360 // if it preserves opaque then keep the intersection of the two. |
356 if (sourceOpaqueRectXfersOpaque) | 361 if (sourceOpaqueRectXfersOpaque) |
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439 opaqueRect.setEmpty(); | 444 opaqueRect.setEmpty(); |
440 } | 445 } |
441 | 446 |
442 SkRect& OpaqueRegionSkia::currentTrackingOpaqueRect() | 447 SkRect& OpaqueRegionSkia::currentTrackingOpaqueRect() |
443 { | 448 { |
444 // If we are drawing into a canvas layer, then track the opaque rect in that layer. | 449 // If we are drawing into a canvas layer, then track the opaque rect in that layer. |
445 return m_canvasLayerStack.isEmpty() ? m_opaqueRect : m_canvasLayerStack.last ().opaqueRect; | 450 return m_canvasLayerStack.isEmpty() ? m_opaqueRect : m_canvasLayerStack.last ().opaqueRect; |
446 } | 451 } |
447 | 452 |
448 } // namespace blink | 453 } // namespace blink |
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