| // Copyright 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/layers/picture_layer.h" |
| |
| #include "cc/layers/content_layer_client.h" |
| #include "cc/layers/picture_layer_impl.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "ui/gfx/rect_conversions.h" |
| |
| namespace cc { |
| |
| scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) { |
| return make_scoped_refptr(new PictureLayer(client)); |
| } |
| |
| PictureLayer::PictureLayer(ContentLayerClient* client) |
| : client_(client), |
| pile_(make_scoped_refptr(new PicturePile())), |
| instrumentation_object_tracker_(id()), |
| is_mask_(false), |
| update_source_frame_number_(-1) { |
| } |
| |
| PictureLayer::~PictureLayer() { |
| } |
| |
| bool PictureLayer::DrawsContent() const { |
| return Layer::DrawsContent() && client_; |
| } |
| |
| scoped_ptr<LayerImpl> PictureLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) { |
| return PictureLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>(); |
| } |
| |
| void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) { |
| Layer::PushPropertiesTo(base_layer); |
| PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer); |
| |
| if (layer_impl->bounds().IsEmpty()) { |
| // Update may not get called for an empty layer, so resize here instead. |
| // Using layer_impl because either bounds() or paint_properties().bounds |
| // may disagree and either one could have been pushed to layer_impl. |
| pile_->Resize(gfx::Size()); |
| pile_->UpdateRecordedRegion(); |
| } else if (update_source_frame_number_ == |
| layer_tree_host()->source_frame_number()) { |
| // If update called, then pile size must match bounds pushed to impl layer. |
| DCHECK_EQ(layer_impl->bounds().ToString(), pile_->size().ToString()); |
| } |
| |
| layer_impl->SetIsMask(is_mask_); |
| // Unlike other properties, invalidation must always be set on layer_impl. |
| // See PictureLayerImpl::PushPropertiesTo for more details. |
| layer_impl->invalidation_.Clear(); |
| layer_impl->invalidation_.Swap(&pile_invalidation_); |
| layer_impl->pile_ = PicturePileImpl::CreateFromOther(pile_.get()); |
| } |
| |
| void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) { |
| Layer::SetLayerTreeHost(host); |
| if (host) { |
| pile_->SetMinContentsScale(host->settings().minimum_contents_scale); |
| pile_->SetTileGridSize(host->settings().default_tile_size); |
| pile_->set_num_raster_threads(host->settings().num_raster_threads); |
| pile_->set_slow_down_raster_scale_factor( |
| host->debug_state().slow_down_raster_scale_factor); |
| pile_->set_show_debug_picture_borders( |
| host->debug_state().show_picture_borders); |
| } |
| } |
| |
| void PictureLayer::SetNeedsDisplayRect(const gfx::RectF& layer_rect) { |
| gfx::Rect rect = gfx::ToEnclosedRect(layer_rect); |
| if (!rect.IsEmpty()) { |
| // Clamp invalidation to the layer bounds. |
| rect.Intersect(gfx::Rect(bounds())); |
| pending_invalidation_.Union(rect); |
| } |
| Layer::SetNeedsDisplayRect(layer_rect); |
| } |
| |
| bool PictureLayer::Update(ResourceUpdateQueue* queue, |
| const OcclusionTracker* occlusion) { |
| update_source_frame_number_ = layer_tree_host()->source_frame_number(); |
| bool updated = Layer::Update(queue, occlusion); |
| |
| if (last_updated_visible_content_rect_ == visible_content_rect() && |
| pile_->size() == paint_properties().bounds && |
| pending_invalidation_.IsEmpty()) { |
| // Only early out if the visible content rect of this layer hasn't changed. |
| return updated; |
| } |
| |
| TRACE_EVENT1("cc", "PictureLayer::Update", |
| "source_frame_number", |
| layer_tree_host()->source_frame_number()); |
| |
| pile_->Resize(paint_properties().bounds); |
| |
| // Calling paint in WebKit can sometimes cause invalidations, so save |
| // off the invalidation prior to calling update. |
| pending_invalidation_.Swap(&pile_invalidation_); |
| pending_invalidation_.Clear(); |
| |
| gfx::Rect visible_layer_rect = gfx::ScaleToEnclosingRect( |
| visible_content_rect(), 1.f / contents_scale_x()); |
| if (layer_tree_host()->settings().using_synchronous_renderer_compositor) { |
| // Workaround for http://crbug.com/235910 - to retain backwards compat |
| // the full page content must always be provided in the picture layer. |
| visible_layer_rect = gfx::Rect(bounds()); |
| } |
| updated |= pile_->Update(client_, |
| SafeOpaqueBackgroundColor(), |
| contents_opaque(), |
| pile_invalidation_, |
| visible_layer_rect, |
| update_source_frame_number_, |
| rendering_stats_instrumentation()); |
| last_updated_visible_content_rect_ = visible_content_rect(); |
| |
| if (updated) { |
| SetNeedsPushProperties(); |
| } else { |
| // If this invalidation did not affect the pile, then it can be cleared as |
| // an optimization. |
| pile_invalidation_.Clear(); |
| } |
| |
| return updated; |
| } |
| |
| void PictureLayer::SetIsMask(bool is_mask) { |
| is_mask_ = is_mask; |
| } |
| |
| bool PictureLayer::SupportsLCDText() const { |
| return true; |
| } |
| |
| skia::RefPtr<SkPicture> PictureLayer::GetPicture() const { |
| // We could either flatten the PicturePile into a single SkPicture, |
| // or paint a fresh one depending on what we intend to do with the |
| // picture. For now we just paint a fresh one to get consistent results. |
| if (!DrawsContent()) |
| return skia::RefPtr<SkPicture>(); |
| |
| int width = bounds().width(); |
| int height = bounds().height(); |
| gfx::RectF opaque; |
| |
| skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture); |
| SkCanvas* canvas = picture->beginRecording(width, height); |
| client_->PaintContents(canvas, gfx::Rect(width, height), &opaque); |
| picture->endRecording(); |
| return picture; |
| } |
| |
| void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) { |
| benchmark->RunOnLayer(this); |
| } |
| |
| } // namespace cc |