1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "cc/layers/ui_resource_layer.h"
6
7 #include "cc/layers/ui_resource_layer_impl.h"
8 #include "cc/resources/prioritized_resource.h"
9 #include "cc/resources/resource_update.h"
10 #include "cc/resources/resource_update_queue.h"
11 #include "cc/resources/scoped_ui_resource.h"
12 #include "cc/resources/ui_resource_bitmap.h"
13 #include "cc/trees/layer_tree_host.h"
14
15 namespace cc {
16
17
18 namespace {
19
20 class ScopedUIResourceHolder : public UIResourceLayer::UIResourceHolder {
21 public:
Create(LayerTreeHost * host,const SkBitmap & skbitmap)22 static scoped_ptr<ScopedUIResourceHolder> Create(LayerTreeHost* host,
23 const SkBitmap& skbitmap) {
24 return make_scoped_ptr(new ScopedUIResourceHolder(host, skbitmap));
25 }
id()26 virtual UIResourceId id() OVERRIDE { return resource_->id(); }
27
28 private:
ScopedUIResourceHolder(LayerTreeHost * host,const SkBitmap & skbitmap)29 ScopedUIResourceHolder(LayerTreeHost* host, const SkBitmap& skbitmap) {
30 resource_ = ScopedUIResource::Create(host, UIResourceBitmap(skbitmap));
31 }
32
33 scoped_ptr<ScopedUIResource> resource_;
34 };
35
36 class SharedUIResourceHolder : public UIResourceLayer::UIResourceHolder {
37 public:
Create(UIResourceId id)38 static scoped_ptr<SharedUIResourceHolder> Create(UIResourceId id) {
39 return make_scoped_ptr(new SharedUIResourceHolder(id));
40 }
41
id()42 virtual UIResourceId id() OVERRIDE { return id_; }
43
44 private:
SharedUIResourceHolder(UIResourceId id)45 explicit SharedUIResourceHolder(UIResourceId id) : id_(id) {}
46
47 UIResourceId id_;
48 };
49
50 } // anonymous namespace
51
~UIResourceHolder()52 UIResourceLayer::UIResourceHolder::~UIResourceHolder() {}
53
Create()54 scoped_refptr<UIResourceLayer> UIResourceLayer::Create() {
55 return make_scoped_refptr(new UIResourceLayer());
56 }
57
UIResourceLayer()58 UIResourceLayer::UIResourceLayer()
59 : Layer(),
60 uv_top_left_(0.f, 0.f),
61 uv_bottom_right_(1.f, 1.f) {
62 vertex_opacity_[0] = 1.0f;
63 vertex_opacity_[1] = 1.0f;
64 vertex_opacity_[2] = 1.0f;
65 vertex_opacity_[3] = 1.0f;
66 }
67
~UIResourceLayer()68 UIResourceLayer::~UIResourceLayer() {}
69
CreateLayerImpl(LayerTreeImpl * tree_impl)70 scoped_ptr<LayerImpl> UIResourceLayer::CreateLayerImpl(
71 LayerTreeImpl* tree_impl) {
72 return UIResourceLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
73 }
74
SetUV(const gfx::PointF & top_left,const gfx::PointF & bottom_right)75 void UIResourceLayer::SetUV(const gfx::PointF& top_left,
76 const gfx::PointF& bottom_right) {
77 if (uv_top_left_ == top_left && uv_bottom_right_ == bottom_right)
78 return;
79 uv_top_left_ = top_left;
80 uv_bottom_right_ = bottom_right;
81 SetNeedsCommit();
82 }
83
SetVertexOpacity(float bottom_left,float top_left,float top_right,float bottom_right)84 void UIResourceLayer::SetVertexOpacity(float bottom_left,
85 float top_left,
86 float top_right,
87 float bottom_right) {
88 // Indexing according to the quad vertex generation:
89 // 1--2
90 // | |
91 // 0--3
92 if (vertex_opacity_[0] == bottom_left &&
93 vertex_opacity_[1] == top_left &&
94 vertex_opacity_[2] == top_right &&
95 vertex_opacity_[3] == bottom_right)
96 return;
97 vertex_opacity_[0] = bottom_left;
98 vertex_opacity_[1] = top_left;
99 vertex_opacity_[2] = top_right;
100 vertex_opacity_[3] = bottom_right;
101 SetNeedsCommit();
102 }
103
SetLayerTreeHost(LayerTreeHost * host)104 void UIResourceLayer::SetLayerTreeHost(LayerTreeHost* host) {
105 if (host == layer_tree_host())
106 return;
107
108 Layer::SetLayerTreeHost(host);
109
110 // Recreate the resource hold against the new LTH.
111 RecreateUIResourceHolder();
112 }
113
RecreateUIResourceHolder()114 void UIResourceLayer::RecreateUIResourceHolder() {
115 ui_resource_holder_.reset();
116 if (!layer_tree_host() || bitmap_.empty())
117 return;
118
119 ui_resource_holder_ =
120 ScopedUIResourceHolder::Create(layer_tree_host(), bitmap_);
121 }
122
SetBitmap(const SkBitmap & skbitmap)123 void UIResourceLayer::SetBitmap(const SkBitmap& skbitmap) {
124 bitmap_ = skbitmap;
125
126 RecreateUIResourceHolder();
127 SetNeedsCommit();
128 }
129
SetUIResourceId(UIResourceId resource_id)130 void UIResourceLayer::SetUIResourceId(UIResourceId resource_id) {
131 if (ui_resource_holder_ && ui_resource_holder_->id() == resource_id)
132 return;
133
134 if (resource_id) {
135 ui_resource_holder_ = SharedUIResourceHolder::Create(resource_id);
136 } else {
137 ui_resource_holder_.reset();
138 }
139
140 SetNeedsCommit();
141 }
142
DrawsContent() const143 bool UIResourceLayer::DrawsContent() const {
144 return ui_resource_holder_ && ui_resource_holder_->id() &&
145 Layer::DrawsContent();
146 }
147
PushPropertiesTo(LayerImpl * layer)148 void UIResourceLayer::PushPropertiesTo(LayerImpl* layer) {
149 Layer::PushPropertiesTo(layer);
150 UIResourceLayerImpl* layer_impl = static_cast<UIResourceLayerImpl*>(layer);
151
152 if (!ui_resource_holder_) {
153 layer_impl->SetUIResourceId(0);
154 } else {
155 DCHECK(layer_tree_host());
156
157 gfx::Size image_size =
158 layer_tree_host()->GetUIResourceSize(ui_resource_holder_->id());
159 layer_impl->SetUIResourceId(ui_resource_holder_->id());
160 layer_impl->SetImageBounds(image_size);
161 layer_impl->SetUV(uv_top_left_, uv_bottom_right_);
162 layer_impl->SetVertexOpacity(vertex_opacity_);
163 }
164 }
165
166 } // namespace cc
167