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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 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 "cc/trees/layer_tree_impl.h" | 5 #include "cc/trees/layer_tree_impl.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <algorithm> | 10 #include <algorithm> |
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44 #include "cc/trees/scroll_node.h" | 44 #include "cc/trees/scroll_node.h" |
45 #include "cc/trees/transform_node.h" | 45 #include "cc/trees/transform_node.h" |
46 #include "ui/gfx/geometry/box_f.h" | 46 #include "ui/gfx/geometry/box_f.h" |
47 #include "ui/gfx/geometry/point_conversions.h" | 47 #include "ui/gfx/geometry/point_conversions.h" |
48 #include "ui/gfx/geometry/rect_conversions.h" | 48 #include "ui/gfx/geometry/rect_conversions.h" |
49 #include "ui/gfx/geometry/size_conversions.h" | 49 #include "ui/gfx/geometry/size_conversions.h" |
50 #include "ui/gfx/geometry/vector2d_conversions.h" | 50 #include "ui/gfx/geometry/vector2d_conversions.h" |
51 | 51 |
52 namespace cc { | 52 namespace cc { |
53 | 53 |
| 54 void LayerTreeLifecycle::AdvanceTo(LifecycleState next_state) { |
| 55 switch (next_state) { |
| 56 case (kNotSyncing): |
| 57 DCHECK_EQ(state_, kLastSyncState); |
| 58 break; |
| 59 case (kBeginningSync): |
| 60 case (kSyncedPropertyTrees): |
| 61 case (kSyncedLayerProperties): |
| 62 // Only allow tree synchronization states to be transitioned in order. |
| 63 DCHECK_EQ(state_ + 1, next_state); |
| 64 state_ = next_state; |
| 65 break; |
| 66 } |
| 67 state_ = next_state; |
| 68 } |
| 69 |
54 LayerTreeImpl::LayerTreeImpl( | 70 LayerTreeImpl::LayerTreeImpl( |
55 LayerTreeHostImpl* layer_tree_host_impl, | 71 LayerTreeHostImpl* layer_tree_host_impl, |
56 scoped_refptr<SyncedProperty<ScaleGroup>> page_scale_factor, | 72 scoped_refptr<SyncedProperty<ScaleGroup>> page_scale_factor, |
57 scoped_refptr<SyncedBrowserControls> top_controls_shown_ratio, | 73 scoped_refptr<SyncedBrowserControls> top_controls_shown_ratio, |
58 scoped_refptr<SyncedElasticOverscroll> elastic_overscroll) | 74 scoped_refptr<SyncedElasticOverscroll> elastic_overscroll) |
59 : layer_tree_host_impl_(layer_tree_host_impl), | 75 : layer_tree_host_impl_(layer_tree_host_impl), |
60 source_frame_number_(-1), | 76 source_frame_number_(-1), |
61 is_first_frame_after_commit_tracker_(-1), | 77 is_first_frame_after_commit_tracker_(-1), |
62 root_layer_for_testing_(nullptr), | 78 root_layer_for_testing_(nullptr), |
63 hud_layer_(nullptr), | 79 hud_layer_(nullptr), |
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155 DCHECK(OuterViewportContainerLayer()->viewport_layer_type() == | 171 DCHECK(OuterViewportContainerLayer()->viewport_layer_type() == |
156 OUTER_VIEWPORT_CONTAINER); | 172 OUTER_VIEWPORT_CONTAINER); |
157 #endif | 173 #endif |
158 if (auto* layer = LayerById(id)) | 174 if (auto* layer = LayerById(id)) |
159 return layer->viewport_layer_type() != NOT_VIEWPORT_LAYER; | 175 return layer->viewport_layer_type() != NOT_VIEWPORT_LAYER; |
160 return false; | 176 return false; |
161 } | 177 } |
162 | 178 |
163 void LayerTreeImpl::DidUpdateScrollOffset(int layer_id) { | 179 void LayerTreeImpl::DidUpdateScrollOffset(int layer_id) { |
164 DidUpdateScrollState(layer_id); | 180 DidUpdateScrollState(layer_id); |
| 181 DCHECK(lifecycle().AllowsPropertyTreeAccess()); |
165 TransformTree& transform_tree = property_trees()->transform_tree; | 182 TransformTree& transform_tree = property_trees()->transform_tree; |
166 ScrollTree& scroll_tree = property_trees()->scroll_tree; | 183 ScrollTree& scroll_tree = property_trees()->scroll_tree; |
167 int transform_id = TransformTree::kInvalidNodeId; | 184 int transform_id = TransformTree::kInvalidNodeId; |
168 | 185 |
169 // If pending tree topology changed and we still want to notify the pending | 186 // If pending tree topology changed and we still want to notify the pending |
170 // tree about scroll offset in the active tree, we may not find the | 187 // tree about scroll offset in the active tree, we may not find the |
171 // corresponding pending layer. | 188 // corresponding pending layer. |
172 if (LayerById(layer_id)) { | 189 if (LayerById(layer_id)) { |
173 // TODO(sunxd): when we have a layer_id to property_tree index map in | 190 // TODO(sunxd): when we have a layer_id to property_tree index map in |
174 // property trees, use the transform_id parameter instead of looking for | 191 // property trees, use the transform_id parameter instead of looking for |
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192 } | 209 } |
193 | 210 |
194 if (IsActiveTree() && layer_tree_host_impl_->pending_tree()) | 211 if (IsActiveTree() && layer_tree_host_impl_->pending_tree()) |
195 layer_tree_host_impl_->pending_tree()->DidUpdateScrollOffset(layer_id); | 212 layer_tree_host_impl_->pending_tree()->DidUpdateScrollOffset(layer_id); |
196 } | 213 } |
197 | 214 |
198 void LayerTreeImpl::DidUpdateScrollState(int layer_id) { | 215 void LayerTreeImpl::DidUpdateScrollState(int layer_id) { |
199 if (!IsActiveTree()) | 216 if (!IsActiveTree()) |
200 return; | 217 return; |
201 | 218 |
| 219 // The scroll_clip_layer Layer properties should be up-to-date. |
| 220 // TODO(pdr): This DCHECK fails on existing tests but should be enabled. |
| 221 // DCHECK(lifecycle().AllowsLayerPropertyAccess()); |
| 222 |
202 if (layer_id == Layer::INVALID_ID) | 223 if (layer_id == Layer::INVALID_ID) |
203 return; | 224 return; |
204 | 225 |
205 int scroll_layer_id, clip_layer_id; | 226 int scroll_layer_id, clip_layer_id; |
206 if (IsViewportLayerId(layer_id)) { | 227 if (IsViewportLayerId(layer_id)) { |
207 if (!InnerViewportContainerLayer()) | 228 if (!InnerViewportContainerLayer()) |
208 return; | 229 return; |
209 | 230 |
210 // For scrollbar purposes, a change to any of the four viewport layers | 231 // For scrollbar purposes, a change to any of the four viewport layers |
211 // should affect the scrollbars tied to the outermost layers, which express | 232 // should affect the scrollbars tied to the outermost layers, which express |
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375 property_trees_.effect_tree.CreateOrReuseRenderSurfaces( | 396 property_trees_.effect_tree.CreateOrReuseRenderSurfaces( |
376 &old_render_surfaces, this); | 397 &old_render_surfaces, this); |
377 if (render_surfaces_changed) | 398 if (render_surfaces_changed) |
378 set_needs_update_draw_properties(); | 399 set_needs_update_draw_properties(); |
379 property_trees->effect_tree.PushCopyRequestsTo(&property_trees_.effect_tree); | 400 property_trees->effect_tree.PushCopyRequestsTo(&property_trees_.effect_tree); |
380 property_trees_.is_main_thread = false; | 401 property_trees_.is_main_thread = false; |
381 property_trees_.is_active = IsActiveTree(); | 402 property_trees_.is_active = IsActiveTree(); |
382 property_trees_.transform_tree.set_source_to_parent_updates_allowed(false); | 403 property_trees_.transform_tree.set_source_to_parent_updates_allowed(false); |
383 } | 404 } |
384 | 405 |
385 void LayerTreeImpl::PushPropertiesTo(LayerTreeImpl* target_tree) { | 406 void LayerTreeImpl::PushPropertyTreesTo(LayerTreeImpl* target_tree) { |
386 // The request queue should have been processed and does not require a push. | 407 // Property trees may store damage status. We preserve the active tree |
387 DCHECK_EQ(ui_resource_request_queue_.size(), 0u); | 408 // damage status by pushing the damage status from active tree property |
| 409 // trees to pending tree property trees or by moving it onto the layers. |
| 410 if (target_tree->property_trees()->changed) { |
| 411 if (property_trees()->sequence_number == |
| 412 target_tree->property_trees()->sequence_number) |
| 413 target_tree->property_trees()->PushChangeTrackingTo(property_trees()); |
| 414 else |
| 415 target_tree->MoveChangeTrackingToLayers(); |
| 416 } |
388 | 417 |
389 // To maintain the current scrolling node we need to use element ids which | 418 // To maintain the current scrolling node we need to use element ids which |
390 // are stable across the property tree update in SetPropertyTrees. | 419 // are stable across the property tree update in SetPropertyTrees. |
391 ElementId scrolling_element_id; | 420 ElementId scrolling_element_id; |
392 if (ScrollNode* scrolling_node = target_tree->CurrentlyScrollingNode()) | 421 if (ScrollNode* scrolling_node = target_tree->CurrentlyScrollingNode()) |
393 scrolling_element_id = scrolling_node->element_id; | 422 scrolling_element_id = scrolling_node->element_id; |
394 | 423 |
395 target_tree->SetPropertyTrees(&property_trees_); | 424 target_tree->SetPropertyTrees(&property_trees_); |
396 | 425 |
397 ScrollNode* scrolling_node = nullptr; | 426 ScrollNode* scrolling_node = nullptr; |
398 if (scrolling_element_id) { | 427 if (scrolling_element_id) { |
399 auto& scroll_tree = target_tree->property_trees()->scroll_tree; | 428 auto& scroll_tree = target_tree->property_trees()->scroll_tree; |
400 scrolling_node = scroll_tree.FindNodeFromElementId(scrolling_element_id); | 429 scrolling_node = scroll_tree.FindNodeFromElementId(scrolling_element_id); |
401 } | 430 } |
402 target_tree->SetCurrentlyScrollingNode(scrolling_node); | 431 target_tree->SetCurrentlyScrollingNode(scrolling_node); |
| 432 } |
| 433 |
| 434 void LayerTreeImpl::PushPropertiesTo(LayerTreeImpl* target_tree) { |
| 435 // The request queue should have been processed and does not require a push. |
| 436 DCHECK_EQ(ui_resource_request_queue_.size(), 0u); |
403 | 437 |
404 target_tree->property_trees()->scroll_tree.PushScrollUpdatesFromPendingTree( | 438 target_tree->property_trees()->scroll_tree.PushScrollUpdatesFromPendingTree( |
405 &property_trees_, target_tree); | 439 &property_trees_, target_tree); |
406 | 440 |
407 if (next_activation_forces_redraw_) { | 441 if (next_activation_forces_redraw_) { |
408 target_tree->ForceRedrawNextActivation(); | 442 target_tree->ForceRedrawNextActivation(); |
409 next_activation_forces_redraw_ = false; | 443 next_activation_forces_redraw_ = false; |
410 } | 444 } |
411 | 445 |
412 target_tree->PassSwapPromises(std::move(swap_promise_list_)); | 446 target_tree->PassSwapPromises(std::move(swap_promise_list_)); |
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756 ++element_id_to_transform; | 790 ++element_id_to_transform; |
757 } | 791 } |
758 | 792 |
759 LayerTreeHostCommon::CallFunctionForEveryLayer(this, [](LayerImpl* layer) { | 793 LayerTreeHostCommon::CallFunctionForEveryLayer(this, [](LayerImpl* layer) { |
760 layer->UpdatePropertyTreeForScrollingAndAnimationIfNeeded(); | 794 layer->UpdatePropertyTreeForScrollingAndAnimationIfNeeded(); |
761 }); | 795 }); |
762 } | 796 } |
763 | 797 |
764 void LayerTreeImpl::SetPageScaleOnActiveTree(float active_page_scale) { | 798 void LayerTreeImpl::SetPageScaleOnActiveTree(float active_page_scale) { |
765 DCHECK(IsActiveTree()); | 799 DCHECK(IsActiveTree()); |
| 800 DCHECK(lifecycle().AllowsPropertyTreeAccess()); |
766 if (page_scale_factor()->SetCurrent( | 801 if (page_scale_factor()->SetCurrent( |
767 ClampPageScaleFactorToLimits(active_page_scale))) { | 802 ClampPageScaleFactorToLimits(active_page_scale))) { |
768 DidUpdatePageScale(); | 803 DidUpdatePageScale(); |
769 if (PageScaleLayer()) { | 804 if (PageScaleLayer()) { |
770 draw_property_utils::UpdatePageScaleFactor( | 805 draw_property_utils::UpdatePageScaleFactor( |
771 property_trees(), PageScaleLayer(), current_page_scale_factor(), | 806 property_trees(), PageScaleLayer(), current_page_scale_factor(), |
772 device_scale_factor(), layer_tree_host_impl_->DrawTransform()); | 807 device_scale_factor(), layer_tree_host_impl_->DrawTransform()); |
773 } else { | 808 } else { |
774 DCHECK(layer_list_.empty() || active_page_scale == 1); | 809 DCHECK(layer_list_.empty() || active_page_scale == 1); |
775 } | 810 } |
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806 // TODO(enne): Pushing from pending to active should never require | 841 // TODO(enne): Pushing from pending to active should never require |
807 // DidUpdatePageScale. The values should already be set by the fully | 842 // DidUpdatePageScale. The values should already be set by the fully |
808 // computed property trees being synced from one tree to another. Remove | 843 // computed property trees being synced from one tree to another. Remove |
809 // this once CDP goes away. | 844 // this once CDP goes away. |
810 changed_page_scale |= page_scale_factor_->PushPendingToActive(); | 845 changed_page_scale |= page_scale_factor_->PushPendingToActive(); |
811 } | 846 } |
812 | 847 |
813 if (changed_page_scale) | 848 if (changed_page_scale) |
814 DidUpdatePageScale(); | 849 DidUpdatePageScale(); |
815 | 850 |
| 851 DCHECK(lifecycle().AllowsPropertyTreeAccess()); |
816 if (page_scale_factor) { | 852 if (page_scale_factor) { |
817 if (PageScaleLayer()) { | 853 if (PageScaleLayer()) { |
818 draw_property_utils::UpdatePageScaleFactor( | 854 draw_property_utils::UpdatePageScaleFactor( |
819 property_trees(), PageScaleLayer(), current_page_scale_factor(), | 855 property_trees(), PageScaleLayer(), current_page_scale_factor(), |
820 device_scale_factor(), layer_tree_host_impl_->DrawTransform()); | 856 device_scale_factor(), layer_tree_host_impl_->DrawTransform()); |
821 } else { | 857 } else { |
822 DCHECK(layer_list_.empty() || *page_scale_factor == 1); | 858 DCHECK(layer_list_.empty() || *page_scale_factor == 1); |
823 } | 859 } |
824 } | 860 } |
825 } | 861 } |
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973 void LayerTreeImpl::SetViewportLayersFromIds( | 1009 void LayerTreeImpl::SetViewportLayersFromIds( |
974 int overscroll_elasticity_layer_id, | 1010 int overscroll_elasticity_layer_id, |
975 int page_scale_layer_id, | 1011 int page_scale_layer_id, |
976 int inner_viewport_scroll_layer_id, | 1012 int inner_viewport_scroll_layer_id, |
977 int outer_viewport_scroll_layer_id) { | 1013 int outer_viewport_scroll_layer_id) { |
978 overscroll_elasticity_layer_id_ = overscroll_elasticity_layer_id; | 1014 overscroll_elasticity_layer_id_ = overscroll_elasticity_layer_id; |
979 page_scale_layer_id_ = page_scale_layer_id; | 1015 page_scale_layer_id_ = page_scale_layer_id; |
980 inner_viewport_scroll_layer_id_ = inner_viewport_scroll_layer_id; | 1016 inner_viewport_scroll_layer_id_ = inner_viewport_scroll_layer_id; |
981 outer_viewport_scroll_layer_id_ = outer_viewport_scroll_layer_id; | 1017 outer_viewport_scroll_layer_id_ = outer_viewport_scroll_layer_id; |
982 | 1018 |
983 UpdateViewportLayerTypes(); | 1019 // The scroll_clip_layer Layer properties should be up-to-date. |
984 } | 1020 DCHECK(lifecycle().AllowsLayerPropertyAccess()); |
985 | |
986 void LayerTreeImpl::ClearViewportLayers() { | |
987 SetViewportLayersFromIds(Layer::INVALID_ID, Layer::INVALID_ID, | |
988 Layer::INVALID_ID, Layer::INVALID_ID); | |
989 } | |
990 | |
991 void LayerTreeImpl::UpdateViewportLayerTypes() { | |
992 if (auto* inner_scroll = LayerById(inner_viewport_scroll_layer_id_)) { | 1021 if (auto* inner_scroll = LayerById(inner_viewport_scroll_layer_id_)) { |
993 inner_scroll->SetViewportLayerType(INNER_VIEWPORT_SCROLL); | 1022 inner_scroll->SetViewportLayerType(INNER_VIEWPORT_SCROLL); |
994 if (auto* inner_container = inner_scroll->scroll_clip_layer()) | 1023 if (auto* inner_container = inner_scroll->scroll_clip_layer()) |
995 inner_container->SetViewportLayerType(INNER_VIEWPORT_CONTAINER); | 1024 inner_container->SetViewportLayerType(INNER_VIEWPORT_CONTAINER); |
996 } | 1025 } |
997 if (auto* outer_scroll = LayerById(outer_viewport_scroll_layer_id_)) { | 1026 if (auto* outer_scroll = LayerById(outer_viewport_scroll_layer_id_)) { |
998 outer_scroll->SetViewportLayerType(OUTER_VIEWPORT_SCROLL); | 1027 outer_scroll->SetViewportLayerType(OUTER_VIEWPORT_SCROLL); |
999 if (auto* outer_container = outer_scroll->scroll_clip_layer()) | 1028 if (auto* outer_container = outer_scroll->scroll_clip_layer()) |
1000 outer_container->SetViewportLayerType(OUTER_VIEWPORT_CONTAINER); | 1029 outer_container->SetViewportLayerType(OUTER_VIEWPORT_CONTAINER); |
1001 } | 1030 } |
1002 } | 1031 } |
1003 | 1032 |
| 1033 void LayerTreeImpl::ClearViewportLayers() { |
| 1034 SetViewportLayersFromIds(Layer::INVALID_ID, Layer::INVALID_ID, |
| 1035 Layer::INVALID_ID, Layer::INVALID_ID); |
| 1036 } |
| 1037 |
1004 // For unit tests, we use the layer's id as its element id. | 1038 // For unit tests, we use the layer's id as its element id. |
1005 static void SetElementIdForTesting(LayerImpl* layer) { | 1039 static void SetElementIdForTesting(LayerImpl* layer) { |
1006 layer->SetElementId(LayerIdToElementIdForTesting(layer->id())); | 1040 layer->SetElementId(LayerIdToElementIdForTesting(layer->id())); |
1007 } | 1041 } |
1008 | 1042 |
1009 void LayerTreeImpl::SetElementIdsForTesting() { | 1043 void LayerTreeImpl::SetElementIdsForTesting() { |
1010 LayerListIterator<LayerImpl> it(root_layer_for_testing_); | 1044 LayerListIterator<LayerImpl> it(root_layer_for_testing_); |
1011 for (; it != LayerListIterator<LayerImpl>(nullptr); ++it) { | 1045 for (; it != LayerListIterator<LayerImpl>(nullptr); ++it) { |
1012 if (!it->element_id()) | 1046 if (!it->element_id()) |
1013 SetElementIdForTesting(*it); | 1047 SetElementIdForTesting(*it); |
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2105 | 2139 |
2106 void LayerTreeImpl::ResetAllChangeTracking() { | 2140 void LayerTreeImpl::ResetAllChangeTracking() { |
2107 layers_that_should_push_properties_.clear(); | 2141 layers_that_should_push_properties_.clear(); |
2108 // Iterate over all layers, including masks. | 2142 // Iterate over all layers, including masks. |
2109 for (auto& layer : *layers_) | 2143 for (auto& layer : *layers_) |
2110 layer->ResetChangeTracking(); | 2144 layer->ResetChangeTracking(); |
2111 property_trees_.ResetAllChangeTracking(); | 2145 property_trees_.ResetAllChangeTracking(); |
2112 } | 2146 } |
2113 | 2147 |
2114 } // namespace cc | 2148 } // namespace cc |
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