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/painted_scrollbar_layer_impl.h"
6
7 #include <algorithm>
8
9 #include "cc/animation/scrollbar_animation_controller.h"
10 #include "cc/layers/layer.h"
11 #include "cc/layers/quad_sink.h"
12 #include "cc/quads/solid_color_draw_quad.h"
13 #include "cc/quads/texture_draw_quad.h"
14 #include "cc/trees/layer_tree_impl.h"
15 #include "cc/trees/layer_tree_settings.h"
16 #include "ui/gfx/rect_conversions.h"
17
18 namespace cc {
19
Create(LayerTreeImpl * tree_impl,int id,ScrollbarOrientation orientation)20 scoped_ptr<PaintedScrollbarLayerImpl> PaintedScrollbarLayerImpl::Create(
21 LayerTreeImpl* tree_impl,
22 int id,
23 ScrollbarOrientation orientation) {
24 return make_scoped_ptr(
25 new PaintedScrollbarLayerImpl(tree_impl, id, orientation));
26 }
27
PaintedScrollbarLayerImpl(LayerTreeImpl * tree_impl,int id,ScrollbarOrientation orientation)28 PaintedScrollbarLayerImpl::PaintedScrollbarLayerImpl(
29 LayerTreeImpl* tree_impl,
30 int id,
31 ScrollbarOrientation orientation)
32 : ScrollbarLayerImplBase(tree_impl, id, orientation, false, false),
33 track_ui_resource_id_(0),
34 thumb_ui_resource_id_(0),
35 thumb_thickness_(0),
36 thumb_length_(0),
37 track_start_(0),
38 track_length_(0),
39 vertical_adjust_(0.f),
40 scroll_layer_id_(Layer::INVALID_ID) {}
41
~PaintedScrollbarLayerImpl()42 PaintedScrollbarLayerImpl::~PaintedScrollbarLayerImpl() {}
43
CreateLayerImpl(LayerTreeImpl * tree_impl)44 scoped_ptr<LayerImpl> PaintedScrollbarLayerImpl::CreateLayerImpl(
45 LayerTreeImpl* tree_impl) {
46 return PaintedScrollbarLayerImpl::Create(tree_impl, id(), orientation())
47 .PassAs<LayerImpl>();
48 }
49
PushPropertiesTo(LayerImpl * layer)50 void PaintedScrollbarLayerImpl::PushPropertiesTo(LayerImpl* layer) {
51 ScrollbarLayerImplBase::PushPropertiesTo(layer);
52
53 PaintedScrollbarLayerImpl* scrollbar_layer =
54 static_cast<PaintedScrollbarLayerImpl*>(layer);
55
56 scrollbar_layer->SetThumbThickness(thumb_thickness_);
57 scrollbar_layer->SetThumbLength(thumb_length_);
58 scrollbar_layer->SetTrackStart(track_start_);
59 scrollbar_layer->SetTrackLength(track_length_);
60
61 scrollbar_layer->set_track_ui_resource_id(track_ui_resource_id_);
62 scrollbar_layer->set_thumb_ui_resource_id(thumb_ui_resource_id_);
63 }
64
WillDraw(DrawMode draw_mode,ResourceProvider * resource_provider)65 bool PaintedScrollbarLayerImpl::WillDraw(DrawMode draw_mode,
66 ResourceProvider* resource_provider) {
67 DCHECK(draw_mode != DRAW_MODE_RESOURCELESS_SOFTWARE);
68 return LayerImpl::WillDraw(draw_mode, resource_provider);
69 }
70
AppendQuads(QuadSink * quad_sink,AppendQuadsData * append_quads_data)71 void PaintedScrollbarLayerImpl::AppendQuads(
72 QuadSink* quad_sink,
73 AppendQuadsData* append_quads_data) {
74 bool premultipled_alpha = true;
75 bool flipped = false;
76 gfx::PointF uv_top_left(0.f, 0.f);
77 gfx::PointF uv_bottom_right(1.f, 1.f);
78 gfx::Rect bounds_rect(bounds());
79 gfx::Rect content_bounds_rect(content_bounds());
80
81 SharedQuadState* shared_quad_state = quad_sink->CreateSharedQuadState();
82 PopulateSharedQuadState(shared_quad_state);
83
84 AppendDebugBorderQuad(
85 quad_sink, content_bounds(), shared_quad_state, append_quads_data);
86
87 gfx::Rect thumb_quad_rect = ComputeThumbQuadRect();
88 gfx::Rect visible_thumb_quad_rect =
89 quad_sink->UnoccludedContentRect(thumb_quad_rect, draw_transform());
90
91 ResourceProvider::ResourceId thumb_resource_id =
92 layer_tree_impl()->ResourceIdForUIResource(thumb_ui_resource_id_);
93 ResourceProvider::ResourceId track_resource_id =
94 layer_tree_impl()->ResourceIdForUIResource(track_ui_resource_id_);
95
96 if (thumb_resource_id && !visible_thumb_quad_rect.IsEmpty()) {
97 gfx::Rect opaque_rect;
98 const float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
99 scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
100 quad->SetNew(shared_quad_state,
101 thumb_quad_rect,
102 opaque_rect,
103 visible_thumb_quad_rect,
104 thumb_resource_id,
105 premultipled_alpha,
106 uv_top_left,
107 uv_bottom_right,
108 SK_ColorTRANSPARENT,
109 opacity,
110 flipped);
111 quad_sink->Append(quad.PassAs<DrawQuad>());
112 }
113
114 gfx::Rect track_quad_rect = content_bounds_rect;
115 gfx::Rect visible_track_quad_rect =
116 quad_sink->UnoccludedContentRect(track_quad_rect, draw_transform());
117 if (track_resource_id && !visible_track_quad_rect.IsEmpty()) {
118 gfx::Rect opaque_rect(contents_opaque() ? track_quad_rect : gfx::Rect());
119 const float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
120 scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
121 quad->SetNew(shared_quad_state,
122 track_quad_rect,
123 opaque_rect,
124 visible_track_quad_rect,
125 track_resource_id,
126 premultipled_alpha,
127 uv_top_left,
128 uv_bottom_right,
129 SK_ColorTRANSPARENT,
130 opacity,
131 flipped);
132 quad_sink->Append(quad.PassAs<DrawQuad>());
133 }
134 }
135
SetThumbThickness(int thumb_thickness)136 void PaintedScrollbarLayerImpl::SetThumbThickness(int thumb_thickness) {
137 if (thumb_thickness_ == thumb_thickness)
138 return;
139 thumb_thickness_ = thumb_thickness;
140 NoteLayerPropertyChanged();
141 }
142
ThumbThickness() const143 int PaintedScrollbarLayerImpl::ThumbThickness() const {
144 return thumb_thickness_;
145 }
146
SetThumbLength(int thumb_length)147 void PaintedScrollbarLayerImpl::SetThumbLength(int thumb_length) {
148 if (thumb_length_ == thumb_length)
149 return;
150 thumb_length_ = thumb_length;
151 NoteLayerPropertyChanged();
152 }
153
ThumbLength() const154 int PaintedScrollbarLayerImpl::ThumbLength() const {
155 return thumb_length_;
156 }
157
SetTrackStart(int track_start)158 void PaintedScrollbarLayerImpl::SetTrackStart(int track_start) {
159 if (track_start_ == track_start)
160 return;
161 track_start_ = track_start;
162 NoteLayerPropertyChanged();
163 }
164
TrackStart() const165 int PaintedScrollbarLayerImpl::TrackStart() const {
166 return track_start_;
167 }
168
SetTrackLength(int track_length)169 void PaintedScrollbarLayerImpl::SetTrackLength(int track_length) {
170 if (track_length_ == track_length)
171 return;
172 track_length_ = track_length;
173 NoteLayerPropertyChanged();
174 }
175
TrackLength() const176 float PaintedScrollbarLayerImpl::TrackLength() const {
177 return track_length_ + (orientation() == VERTICAL ? vertical_adjust() : 0);
178 }
179
IsThumbResizable() const180 bool PaintedScrollbarLayerImpl::IsThumbResizable() const {
181 return false;
182 }
183
LayerTypeAsString() const184 const char* PaintedScrollbarLayerImpl::LayerTypeAsString() const {
185 return "cc::PaintedScrollbarLayerImpl";
186 }
187
188 } // namespace cc
189