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      1 // Copyright 2012 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/io_surface_layer.h"
      6 
      7 #include "cc/layers/io_surface_layer_impl.h"
      8 
      9 namespace cc {
     10 
     11 scoped_refptr<IOSurfaceLayer> IOSurfaceLayer::Create() {
     12   return make_scoped_refptr(new IOSurfaceLayer());
     13 }
     14 
     15 IOSurfaceLayer::IOSurfaceLayer() : Layer(), io_surface_id_(0) {}
     16 
     17 IOSurfaceLayer::~IOSurfaceLayer() {}
     18 
     19 void IOSurfaceLayer::SetIOSurfaceProperties(uint32_t io_surface_id,
     20                                             const gfx::Size& size) {
     21   io_surface_id_ = io_surface_id;
     22   io_surface_size_ = size;
     23   UpdateDrawsContent(HasDrawableContent());
     24   SetNeedsCommit();
     25 }
     26 
     27 scoped_ptr<LayerImpl> IOSurfaceLayer::CreateLayerImpl(
     28     LayerTreeImpl* tree_impl) {
     29   return IOSurfaceLayerImpl::Create(tree_impl, layer_id_).PassAs<LayerImpl>();
     30 }
     31 
     32 bool IOSurfaceLayer::HasDrawableContent() const {
     33   return io_surface_id_ && Layer::HasDrawableContent();
     34 }
     35 
     36 void IOSurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
     37   Layer::PushPropertiesTo(layer);
     38 
     39   IOSurfaceLayerImpl* io_surface_layer =
     40       static_cast<IOSurfaceLayerImpl*>(layer);
     41   io_surface_layer->SetIOSurfaceProperties(io_surface_id_, io_surface_size_);
     42 }
     43 
     44 bool IOSurfaceLayer::Update(ResourceUpdateQueue* queue,
     45                             const OcclusionTracker<Layer>* occlusion) {
     46   bool updated = Layer::Update(queue, occlusion);
     47 
     48   // This layer doesn't update any resources from the main thread side,
     49   // but repaint rects need to be sent to the layer impl via commit.
     50   return updated || !update_rect_.IsEmpty();
     51 }
     52 
     53 }  // namespace cc
     54