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1 // Copyright 2010 The Chromium Authors. All rights reserved. | 1 // Copyright 2010 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/layers/layer.h" | 5 #include "cc/layers/layer.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/debug/trace_event.h" | 9 #include "base/debug/trace_event.h" |
10 #include "base/location.h" | 10 #include "base/location.h" |
11 #include "base/metrics/histogram.h" | 11 #include "base/metrics/histogram.h" |
12 #include "base/single_thread_task_runner.h" | 12 #include "base/single_thread_task_runner.h" |
13 #include "cc/animation/animation.h" | 13 #include "cc/animation/animation.h" |
14 #include "cc/animation/animation_events.h" | 14 #include "cc/animation/animation_events.h" |
15 #include "cc/animation/keyframed_animation_curve.h" | 15 #include "cc/animation/keyframed_animation_curve.h" |
16 #include "cc/animation/layer_animation_controller.h" | 16 #include "cc/animation/layer_animation_controller.h" |
17 #include "cc/layers/layer_client.h" | 17 #include "cc/layers/layer_client.h" |
18 #include "cc/layers/layer_impl.h" | 18 #include "cc/layers/layer_impl.h" |
19 #include "cc/layers/scrollbar_layer_interface.h" | |
20 #include "cc/output/copy_output_request.h" | 19 #include "cc/output/copy_output_request.h" |
21 #include "cc/output/copy_output_result.h" | 20 #include "cc/output/copy_output_result.h" |
22 #include "cc/trees/layer_tree_host.h" | 21 #include "cc/trees/layer_tree_host.h" |
23 #include "cc/trees/layer_tree_impl.h" | 22 #include "cc/trees/layer_tree_impl.h" |
24 #include "third_party/skia/include/core/SkImageFilter.h" | 23 #include "third_party/skia/include/core/SkImageFilter.h" |
25 #include "ui/gfx/geometry/vector2d_conversions.h" | |
26 #include "ui/gfx/rect_conversions.h" | 24 #include "ui/gfx/rect_conversions.h" |
27 | 25 |
28 namespace cc { | 26 namespace cc { |
29 | 27 |
30 static int s_next_layer_id = 1; | 28 static int s_next_layer_id = 1; |
31 | 29 |
32 scoped_refptr<Layer> Layer::Create() { | 30 scoped_refptr<Layer> Layer::Create() { |
33 return make_scoped_refptr(new Layer()); | 31 return make_scoped_refptr(new Layer()); |
34 } | 32 } |
35 | 33 |
36 Layer::Layer() | 34 Layer::Layer() |
37 : needs_push_properties_(false), | 35 : needs_push_properties_(false), |
38 num_dependents_need_push_properties_(false), | 36 num_dependents_need_push_properties_(false), |
39 stacking_order_changed_(false), | 37 stacking_order_changed_(false), |
40 layer_id_(s_next_layer_id++), | 38 layer_id_(s_next_layer_id++), |
41 ignore_set_needs_commit_(false), | 39 ignore_set_needs_commit_(false), |
42 parent_(NULL), | 40 parent_(NULL), |
43 layer_tree_host_(NULL), | 41 layer_tree_host_(NULL), |
44 scroll_clip_layer_(NULL), | 42 scrollable_(false), |
45 should_scroll_on_main_thread_(false), | 43 should_scroll_on_main_thread_(false), |
46 have_wheel_event_handlers_(false), | 44 have_wheel_event_handlers_(false), |
47 user_scrollable_horizontal_(true), | 45 user_scrollable_horizontal_(true), |
48 user_scrollable_vertical_(true), | 46 user_scrollable_vertical_(true), |
49 is_root_for_isolated_group_(false), | 47 is_root_for_isolated_group_(false), |
50 is_container_for_fixed_position_layers_(false), | 48 is_container_for_fixed_position_layers_(false), |
51 is_drawable_(false), | 49 is_drawable_(false), |
52 hide_layer_and_subtree_(false), | 50 hide_layer_and_subtree_(false), |
53 masks_to_bounds_(false), | 51 masks_to_bounds_(false), |
54 contents_opaque_(false), | 52 contents_opaque_(false), |
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674 | 672 |
675 void Layer::RemoveClipChild(Layer* child) { | 673 void Layer::RemoveClipChild(Layer* child) { |
676 clip_children_->erase(child); | 674 clip_children_->erase(child); |
677 if (clip_children_->empty()) | 675 if (clip_children_->empty()) |
678 clip_children_.reset(); | 676 clip_children_.reset(); |
679 SetNeedsCommit(); | 677 SetNeedsCommit(); |
680 } | 678 } |
681 | 679 |
682 void Layer::SetScrollOffset(gfx::Vector2d scroll_offset) { | 680 void Layer::SetScrollOffset(gfx::Vector2d scroll_offset) { |
683 DCHECK(IsPropertyChangeAllowed()); | 681 DCHECK(IsPropertyChangeAllowed()); |
684 | |
685 if (layer_tree_host()) { | |
686 scroll_offset = layer_tree_host()->DistributeScrollOffsetToViewports( | |
687 scroll_offset, this); | |
688 } | |
689 | |
690 if (scroll_offset_ == scroll_offset) | 682 if (scroll_offset_ == scroll_offset) |
691 return; | 683 return; |
692 scroll_offset_ = scroll_offset; | 684 scroll_offset_ = scroll_offset; |
693 SetNeedsCommit(); | 685 SetNeedsCommit(); |
694 } | 686 } |
695 | 687 |
696 void Layer::SetScrollOffsetFromImplSide(gfx::Vector2d scroll_offset) { | 688 void Layer::SetScrollOffsetFromImplSide(gfx::Vector2d scroll_offset) { |
697 DCHECK(IsPropertyChangeAllowed()); | 689 DCHECK(IsPropertyChangeAllowed()); |
698 // This function only gets called during a BeginMainFrame, so there | 690 // This function only gets called during a BeginMainFrame, so there |
699 // is no need to call SetNeedsUpdate here. | 691 // is no need to call SetNeedsUpdate here. |
700 DCHECK(layer_tree_host_ && layer_tree_host_->CommitRequested()); | 692 DCHECK(layer_tree_host_ && layer_tree_host_->CommitRequested()); |
701 if (scroll_offset_ == scroll_offset) | 693 if (scroll_offset_ == scroll_offset) |
702 return; | 694 return; |
703 scroll_offset_ = scroll_offset; | 695 scroll_offset_ = scroll_offset; |
704 SetNeedsPushProperties(); | 696 SetNeedsPushProperties(); |
705 if (!did_scroll_callback_.is_null()) | 697 if (!did_scroll_callback_.is_null()) |
706 did_scroll_callback_.Run(); | 698 did_scroll_callback_.Run(); |
707 // The callback could potentially change the layer structure: | 699 // The callback could potentially change the layer structure: |
708 // "this" may have been destroyed during the process. | 700 // "this" may have been destroyed during the process. |
709 } | 701 } |
710 | 702 |
711 // TODO(wjmaclean) We should template this and put it into LayerTreeHostCommon | 703 void Layer::SetMaxScrollOffset(gfx::Vector2d max_scroll_offset) { |
712 // so that both Layer and LayerImpl are using the same code. In order | |
713 // to template it we should avoid calling layer_tree_host() by giving | |
714 // Layer/LayerImpl local accessors for page_scale_layer() and | |
715 // page_scale_factor(). | |
716 gfx::Vector2d Layer::MaxScrollOffset() const { | |
717 if (!scroll_clip_layer_) | |
718 return gfx::Vector2d(); | |
719 | |
720 gfx::Size scaled_scroll_bounds(bounds()); | |
721 Layer const* current_layer = this; | |
722 Layer const* page_scale_layer = layer_tree_host()->page_scale_layer(); | |
723 float scale_factor = 1.f; | |
724 do { | |
725 if (current_layer == page_scale_layer) { | |
726 scale_factor = layer_tree_host()->page_scale_factor(); | |
727 scaled_scroll_bounds.SetSize( | |
728 scale_factor * scaled_scroll_bounds.width(), | |
729 scale_factor * scaled_scroll_bounds.height()); | |
730 } | |
731 current_layer = current_layer->parent(); | |
732 } while (current_layer && current_layer != scroll_clip_layer_); | |
733 DCHECK(current_layer == scroll_clip_layer_); | |
734 | |
735 gfx::Vector2dF max_offset( | |
736 scaled_scroll_bounds.width() - scroll_clip_layer_->bounds().width(), | |
737 scaled_scroll_bounds.height() - scroll_clip_layer_->bounds().height()); | |
738 // We need the final scroll offset to be in CSS coords. | |
739 max_offset.Scale(1.f / scale_factor); | |
740 max_offset.SetToMax(gfx::Vector2dF()); | |
741 return gfx::ToFlooredVector2d(max_offset); | |
742 } | |
743 | |
744 void Layer::SetScrollClipLayer(Layer* clip_layer) { | |
745 DCHECK(IsPropertyChangeAllowed()); | 704 DCHECK(IsPropertyChangeAllowed()); |
746 if (scroll_clip_layer_ == clip_layer) | 705 if (max_scroll_offset_ == max_scroll_offset) |
747 return; | 706 return; |
748 scroll_clip_layer_ = clip_layer; | 707 max_scroll_offset_ = max_scroll_offset; |
749 SetNeedsCommit(); | 708 SetNeedsCommit(); |
750 } | 709 } |
751 | 710 |
| 711 void Layer::SetScrollable(bool scrollable) { |
| 712 DCHECK(IsPropertyChangeAllowed()); |
| 713 if (scrollable_ == scrollable) |
| 714 return; |
| 715 scrollable_ = scrollable; |
| 716 SetNeedsCommit(); |
| 717 } |
| 718 |
752 void Layer::SetUserScrollable(bool horizontal, bool vertical) { | 719 void Layer::SetUserScrollable(bool horizontal, bool vertical) { |
753 DCHECK(IsPropertyChangeAllowed()); | 720 DCHECK(IsPropertyChangeAllowed()); |
754 if (user_scrollable_horizontal_ == horizontal && | 721 if (user_scrollable_horizontal_ == horizontal && |
755 user_scrollable_vertical_ == vertical) | 722 user_scrollable_vertical_ == vertical) |
756 return; | 723 return; |
757 user_scrollable_horizontal_ = horizontal; | 724 user_scrollable_horizontal_ = horizontal; |
758 user_scrollable_vertical_ = vertical; | 725 user_scrollable_vertical_ = vertical; |
759 SetNeedsCommit(); | 726 SetNeedsCommit(); |
760 } | 727 } |
761 | 728 |
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937 IsContainerForFixedPositionLayers()); | 904 IsContainerForFixedPositionLayers()); |
938 layer->SetFixedContainerSizeDelta(gfx::Vector2dF()); | 905 layer->SetFixedContainerSizeDelta(gfx::Vector2dF()); |
939 layer->SetPositionConstraint(position_constraint_); | 906 layer->SetPositionConstraint(position_constraint_); |
940 layer->SetPreserves3d(preserves_3d()); | 907 layer->SetPreserves3d(preserves_3d()); |
941 layer->SetUseParentBackfaceVisibility(use_parent_backface_visibility_); | 908 layer->SetUseParentBackfaceVisibility(use_parent_backface_visibility_); |
942 layer->SetSublayerTransform(sublayer_transform_); | 909 layer->SetSublayerTransform(sublayer_transform_); |
943 if (!layer->TransformIsAnimatingOnImplOnly() && !TransformIsAnimating()) | 910 if (!layer->TransformIsAnimatingOnImplOnly() && !TransformIsAnimating()) |
944 layer->SetTransform(transform_); | 911 layer->SetTransform(transform_); |
945 DCHECK(!(TransformIsAnimating() && layer->TransformIsAnimatingOnImplOnly())); | 912 DCHECK(!(TransformIsAnimating() && layer->TransformIsAnimatingOnImplOnly())); |
946 | 913 |
947 layer->SetScrollClipLayer(scroll_clip_layer_ ? scroll_clip_layer_->id() | 914 layer->SetScrollable(scrollable_); |
948 : Layer::INVALID_ID); | |
949 layer->set_user_scrollable_horizontal(user_scrollable_horizontal_); | 915 layer->set_user_scrollable_horizontal(user_scrollable_horizontal_); |
950 layer->set_user_scrollable_vertical(user_scrollable_vertical_); | 916 layer->set_user_scrollable_vertical(user_scrollable_vertical_); |
| 917 layer->SetMaxScrollOffset(max_scroll_offset_); |
951 | 918 |
952 LayerImpl* scroll_parent = NULL; | 919 LayerImpl* scroll_parent = NULL; |
953 if (scroll_parent_) | 920 if (scroll_parent_) |
954 scroll_parent = layer->layer_tree_impl()->LayerById(scroll_parent_->id()); | 921 scroll_parent = layer->layer_tree_impl()->LayerById(scroll_parent_->id()); |
955 | 922 |
956 layer->SetScrollParent(scroll_parent); | 923 layer->SetScrollParent(scroll_parent); |
957 if (scroll_children_) { | 924 if (scroll_children_) { |
958 std::set<LayerImpl*>* scroll_children = new std::set<LayerImpl*>; | 925 std::set<LayerImpl*>* scroll_children = new std::set<LayerImpl*>; |
959 for (std::set<Layer*>::iterator it = scroll_children_->begin(); | 926 for (std::set<Layer*>::iterator it = scroll_children_->begin(); |
960 it != scroll_children_->end(); ++it) | 927 it != scroll_children_->end(); ++it) |
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1199 clip_parent_->RemoveClipChild(this); | 1166 clip_parent_->RemoveClipChild(this); |
1200 | 1167 |
1201 clip_parent_ = NULL; | 1168 clip_parent_ = NULL; |
1202 } | 1169 } |
1203 | 1170 |
1204 void Layer::RunMicroBenchmark(MicroBenchmark* benchmark) { | 1171 void Layer::RunMicroBenchmark(MicroBenchmark* benchmark) { |
1205 benchmark->RunOnLayer(this); | 1172 benchmark->RunOnLayer(this); |
1206 } | 1173 } |
1207 | 1174 |
1208 } // namespace cc | 1175 } // namespace cc |
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