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1 /* | 1 /* |
2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. |
3 * Copyright (C) 2014 Google Inc. All rights reserved. | 3 * Copyright (C) 2014 Google Inc. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions | 6 * modification, are permitted provided that the following conditions |
7 * are met: | 7 * are met: |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. 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 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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263 TRACE_LAYER_INVALIDATION( | 263 TRACE_LAYER_INVALIDATION( |
264 layer, | 264 layer, |
265 InspectorLayerInvalidationTrackingEvent::RemovedFromSquashingLayer); | 265 InspectorLayerInvalidationTrackingEvent::RemovedFromSquashingLayer); |
266 layersNeedingPaintInvalidation.push_back(layer); | 266 layersNeedingPaintInvalidation.push_back(layer); |
267 m_layersChanged = true; | 267 m_layersChanged = true; |
268 | 268 |
269 layer->setLostGroupedMapping(false); | 269 layer->setLostGroupedMapping(false); |
270 } | 270 } |
271 } | 271 } |
272 | 272 |
273 static ScrollingCoordinator* scrollingCoordinatorFromLayer(PaintLayer& layer) { | |
274 Page* page = layer.layoutObject().frame()->page(); | |
275 return (!page) ? nullptr : page->scrollingCoordinator(); | |
276 } | |
277 | |
278 void CompositingLayerAssigner::assignLayersToBackingsInternal( | 273 void CompositingLayerAssigner::assignLayersToBackingsInternal( |
279 PaintLayer* layer, | 274 PaintLayer* layer, |
280 SquashingState& squashingState, | 275 SquashingState& squashingState, |
281 Vector<PaintLayer*>& layersNeedingPaintInvalidation) { | 276 Vector<PaintLayer*>& layersNeedingPaintInvalidation) { |
282 if (requiresSquashing(layer->getCompositingReasons())) { | 277 if (requiresSquashing(layer->getCompositingReasons())) { |
283 SquashingDisallowedReasons reasonsPreventingSquashing = | 278 SquashingDisallowedReasons reasonsPreventingSquashing = |
284 getReasonsPreventingSquashing(layer, squashingState); | 279 getReasonsPreventingSquashing(layer, squashingState); |
285 if (reasonsPreventingSquashing) { | 280 if (reasonsPreventingSquashing) { |
286 layer->setCompositingReasons(layer->getCompositingReasons() | | 281 layer->setCompositingReasons(layer->getCompositingReasons() | |
287 CompositingReasonSquashingDisallowed); | 282 CompositingReasonSquashingDisallowed); |
288 layer->setSquashingDisallowedReasons(reasonsPreventingSquashing); | 283 layer->setSquashingDisallowedReasons(reasonsPreventingSquashing); |
289 } | 284 } |
290 } | 285 } |
291 | 286 |
292 CompositingStateTransitionType compositedLayerUpdate = | 287 CompositingStateTransitionType compositedLayerUpdate = |
293 computeCompositedLayerUpdate(layer); | 288 computeCompositedLayerUpdate(layer); |
294 | 289 |
295 if (m_compositor->allocateOrClearCompositedLayerMapping( | 290 if (m_compositor->allocateOrClearCompositedLayerMapping( |
296 layer, compositedLayerUpdate)) { | 291 layer, compositedLayerUpdate)) { |
297 TRACE_LAYER_INVALIDATION( | 292 TRACE_LAYER_INVALIDATION( |
298 layer, InspectorLayerInvalidationTrackingEvent::NewCompositedLayer); | 293 layer, InspectorLayerInvalidationTrackingEvent::NewCompositedLayer); |
299 layersNeedingPaintInvalidation.push_back(layer); | 294 layersNeedingPaintInvalidation.push_back(layer); |
300 m_layersChanged = true; | 295 m_layersChanged = true; |
301 if (ScrollingCoordinator* scrollingCoordinator = | 296 if (ScrollingCoordinator* scrollingCoordinator = |
302 scrollingCoordinatorFromLayer(*layer)) { | 297 CompositedLayerMapping::scrollingCoordinatorFromLayer(*layer)) { |
303 if (layer->layoutObject().style()->hasViewportConstrainedPosition()) { | 298 if (layer->layoutObject().style()->hasViewportConstrainedPosition()) { |
304 scrollingCoordinator->frameViewFixedObjectsDidChange( | 299 scrollingCoordinator->frameViewFixedObjectsDidChange( |
305 layer->layoutObject().view()->frameView()); | 300 layer->layoutObject().view()->frameView()); |
306 } | 301 } |
307 } | 302 } |
308 } | 303 } |
309 | 304 |
310 // Add this layer to a squashing backing if needed. | 305 // Add this layer to a squashing backing if needed. |
311 updateSquashingAssignment(layer, squashingState, compositedLayerUpdate, | 306 updateSquashingAssignment(layer, squashingState, compositedLayerUpdate, |
312 layersNeedingPaintInvalidation); | 307 layersNeedingPaintInvalidation); |
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350 while (PaintLayerStackingNode* curNode = iterator.next()) | 345 while (PaintLayerStackingNode* curNode = iterator.next()) |
351 assignLayersToBackingsInternal(curNode->layer(), squashingState, | 346 assignLayersToBackingsInternal(curNode->layer(), squashingState, |
352 layersNeedingPaintInvalidation); | 347 layersNeedingPaintInvalidation); |
353 | 348 |
354 if (squashingState.hasMostRecentMapping && | 349 if (squashingState.hasMostRecentMapping && |
355 &squashingState.mostRecentMapping->owningLayer() == layer) | 350 &squashingState.mostRecentMapping->owningLayer() == layer) |
356 squashingState.haveAssignedBackingsToEntireSquashingLayerSubtree = true; | 351 squashingState.haveAssignedBackingsToEntireSquashingLayerSubtree = true; |
357 } | 352 } |
358 | 353 |
359 } // namespace blink | 354 } // namespace blink |
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