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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 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/painted_scrollbar_layer.h" | 5 #include "cc/layers/painted_scrollbar_layer.h" |
6 | 6 |
7 #include "base/auto_reset.h" | 7 #include "base/auto_reset.h" |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/debug/trace_event.h" | 9 #include "base/debug/trace_event.h" |
10 #include "cc/layers/painted_scrollbar_layer_impl.h" | 10 #include "cc/layers/painted_scrollbar_layer_impl.h" |
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123 track_rect_.x() - location_.x()); | 123 track_rect_.x() - location_.x()); |
124 scrollbar_layer->SetTrackLength(track_rect_.width()); | 124 scrollbar_layer->SetTrackLength(track_rect_.width()); |
125 } else { | 125 } else { |
126 scrollbar_layer->SetTrackStart( | 126 scrollbar_layer->SetTrackStart( |
127 track_rect_.y() - location_.y()); | 127 track_rect_.y() - location_.y()); |
128 scrollbar_layer->SetTrackLength(track_rect_.height()); | 128 scrollbar_layer->SetTrackLength(track_rect_.height()); |
129 } | 129 } |
130 | 130 |
131 if (track_resource_.get()) | 131 if (track_resource_.get()) |
132 scrollbar_layer->set_track_ui_resource_id(track_resource_->id()); | 132 scrollbar_layer->set_track_ui_resource_id(track_resource_->id()); |
133 else | |
134 scrollbar_layer->set_track_ui_resource_id(0); | |
133 if (thumb_resource_.get()) | 135 if (thumb_resource_.get()) |
134 scrollbar_layer->set_thumb_ui_resource_id(thumb_resource_->id()); | 136 scrollbar_layer->set_thumb_ui_resource_id(thumb_resource_->id()); |
137 else | |
138 scrollbar_layer->set_thumb_ui_resource_id(0); | |
135 | 139 |
136 scrollbar_layer->set_is_overlay_scrollbar(is_overlay_); | 140 scrollbar_layer->set_is_overlay_scrollbar(is_overlay_); |
137 } | 141 } |
138 | 142 |
139 ScrollbarLayerInterface* PaintedScrollbarLayer::ToScrollbarLayer() { | 143 ScrollbarLayerInterface* PaintedScrollbarLayer::ToScrollbarLayer() { |
140 return this; | 144 return this; |
141 } | 145 } |
142 | 146 |
143 void PaintedScrollbarLayer::PushScrollClipPropertiesTo(LayerImpl* layer) { | 147 void PaintedScrollbarLayer::PushScrollClipPropertiesTo(LayerImpl* layer) { |
144 PaintedScrollbarLayerImpl* scrollbar_layer = | 148 PaintedScrollbarLayerImpl* scrollbar_layer = |
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198 } | 202 } |
199 } | 203 } |
200 | 204 |
201 bool PaintedScrollbarLayer::Update(ResourceUpdateQueue* queue, | 205 bool PaintedScrollbarLayer::Update(ResourceUpdateQueue* queue, |
202 const OcclusionTracker<Layer>* occlusion) { | 206 const OcclusionTracker<Layer>* occlusion) { |
203 UpdateThumbAndTrackGeometry(); | 207 UpdateThumbAndTrackGeometry(); |
204 | 208 |
205 gfx::Rect track_layer_rect = gfx::Rect(location_, bounds()); | 209 gfx::Rect track_layer_rect = gfx::Rect(location_, bounds()); |
206 gfx::Rect scaled_track_rect = ScrollbarLayerRectToContentRect( | 210 gfx::Rect scaled_track_rect = ScrollbarLayerRectToContentRect( |
207 track_layer_rect); | 211 track_layer_rect); |
212 bool updated = false; | |
213 if (track_rect_.IsEmpty() || scaled_track_rect.IsEmpty()) { | |
214 if (track_resource_) { | |
215 track_resource_.reset(); | |
216 if (thumb_resource_) | |
217 thumb_resource_.reset(); | |
218 SetNeedsPushProperties(); | |
219 updated = true; | |
220 } | |
221 return updated; | |
222 } | |
208 | 223 |
209 if (track_rect_.IsEmpty() || scaled_track_rect.IsEmpty()) | 224 if (!has_thumb_ && thumb_resource_) { |
210 return false; | 225 thumb_resource_.reset(); |
226 SetNeedsPushProperties(); | |
danakj
2014/09/15 18:16:27
Thanks, can you add a test that will exercise this
MuVen
2014/09/16 13:34:31
Done.
| |
227 } | |
211 | 228 |
212 { | 229 { |
213 base::AutoReset<bool> ignore_set_needs_commit(&ignore_set_needs_commit_, | 230 base::AutoReset<bool> ignore_set_needs_commit(&ignore_set_needs_commit_, |
214 true); | 231 true); |
215 ContentsScalingLayer::Update(queue, occlusion); | 232 ContentsScalingLayer::Update(queue, occlusion); |
216 } | 233 } |
217 | 234 |
218 if (update_rect_.IsEmpty() && track_resource_) | 235 if (update_rect_.IsEmpty() && track_resource_) |
219 return false; | 236 return updated; |
220 | 237 |
221 track_resource_ = ScopedUIResource::Create( | 238 track_resource_ = ScopedUIResource::Create( |
222 layer_tree_host(), | 239 layer_tree_host(), |
223 RasterizeScrollbarPart(track_layer_rect, scaled_track_rect, TRACK)); | 240 RasterizeScrollbarPart(track_layer_rect, scaled_track_rect, TRACK)); |
224 | 241 |
225 gfx::Rect thumb_layer_rect = OriginThumbRect(); | 242 gfx::Rect thumb_layer_rect = OriginThumbRect(); |
226 gfx::Rect scaled_thumb_rect = | 243 gfx::Rect scaled_thumb_rect = |
227 ScrollbarLayerRectToContentRect(thumb_layer_rect); | 244 ScrollbarLayerRectToContentRect(thumb_layer_rect); |
228 if (has_thumb_ && !scaled_thumb_rect.IsEmpty()) { | 245 if (has_thumb_ && !scaled_thumb_rect.IsEmpty()) { |
229 thumb_resource_ = ScopedUIResource::Create( | 246 thumb_resource_ = ScopedUIResource::Create( |
230 layer_tree_host(), | 247 layer_tree_host(), |
231 RasterizeScrollbarPart(thumb_layer_rect, scaled_thumb_rect, THUMB)); | 248 RasterizeScrollbarPart(thumb_layer_rect, scaled_thumb_rect, THUMB)); |
232 } | 249 } |
233 | 250 |
234 // UI resources changed so push properties is needed. | 251 // UI resources changed so push properties is needed. |
235 SetNeedsPushProperties(); | 252 SetNeedsPushProperties(); |
236 return true; | 253 updated = true; |
254 return updated; | |
237 } | 255 } |
238 | 256 |
239 UIResourceBitmap PaintedScrollbarLayer::RasterizeScrollbarPart( | 257 UIResourceBitmap PaintedScrollbarLayer::RasterizeScrollbarPart( |
240 const gfx::Rect& layer_rect, | 258 const gfx::Rect& layer_rect, |
241 const gfx::Rect& content_rect, | 259 const gfx::Rect& content_rect, |
242 ScrollbarPart part) { | 260 ScrollbarPart part) { |
243 DCHECK(!content_rect.size().IsEmpty()); | 261 DCHECK(!content_rect.size().IsEmpty()); |
244 DCHECK(!layer_rect.size().IsEmpty()); | 262 DCHECK(!layer_rect.size().IsEmpty()); |
245 | 263 |
246 SkBitmap skbitmap; | 264 SkBitmap skbitmap; |
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266 | 284 |
267 scrollbar_->PaintPart(&skcanvas, part, layer_rect); | 285 scrollbar_->PaintPart(&skcanvas, part, layer_rect); |
268 // Make sure that the pixels are no longer mutable to unavoid unnecessary | 286 // Make sure that the pixels are no longer mutable to unavoid unnecessary |
269 // allocation and copying. | 287 // allocation and copying. |
270 skbitmap.setImmutable(); | 288 skbitmap.setImmutable(); |
271 | 289 |
272 return UIResourceBitmap(skbitmap); | 290 return UIResourceBitmap(skbitmap); |
273 } | 291 } |
274 | 292 |
275 } // namespace cc | 293 } // namespace cc |
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