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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                                             gfx::Size size) {
     21   io_surface_id_ = io_surface_id;
     22   io_surface_size_ = size;
     23   SetNeedsCommit();
     24 }
     25 
     26 scoped_ptr<LayerImpl> IOSurfaceLayer::CreateLayerImpl(
     27     LayerTreeImpl* tree_impl) {
     28   return IOSurfaceLayerImpl::Create(tree_impl, layer_id_).PassAs<LayerImpl>();
     29 }
     30 
     31 bool IOSurfaceLayer::DrawsContent() const {
     32   return io_surface_id_ && Layer::DrawsContent();
     33 }
     34 
     35 void IOSurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
     36   Layer::PushPropertiesTo(layer);
     37 
     38   IOSurfaceLayerImpl* io_surface_layer =
     39       static_cast<IOSurfaceLayerImpl*>(layer);
     40   io_surface_layer->SetIOSurfaceProperties(io_surface_id_, io_surface_size_);
     41 }
     42 
     43 bool IOSurfaceLayer::Update(ResourceUpdateQueue* queue,
     44                             const OcclusionTracker* occlusion) {
     45   bool updated = Layer::Update(queue, occlusion);
     46 
     47   // This layer doesn't update any resources from the main thread side,
     48   // but repaint rects need to be sent to the layer impl via commit.
     49   return updated || !update_rect_.IsEmpty();
     50 }
     51 
     52 }  // namespace cc
     53