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      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 #ifndef CC_LAYERS_UI_RESOURCE_LAYER_IMPL_H_
      6 #define CC_LAYERS_UI_RESOURCE_LAYER_IMPL_H_
      7 
      8 #include <string>
      9 
     10 #include "cc/base/cc_export.h"
     11 #include "cc/layers/layer_impl.h"
     12 #include "cc/resources/resource_provider.h"
     13 #include "cc/resources/ui_resource_client.h"
     14 #include "ui/gfx/rect.h"
     15 #include "ui/gfx/size.h"
     16 
     17 namespace base {
     18 class DictionaryValue;
     19 }
     20 
     21 namespace cc {
     22 
     23 class CC_EXPORT UIResourceLayerImpl : public LayerImpl {
     24  public:
     25   static scoped_ptr<UIResourceLayerImpl> Create(LayerTreeImpl* tree_impl,
     26                                                int id) {
     27     return make_scoped_ptr(new UIResourceLayerImpl(tree_impl, id));
     28   }
     29   virtual ~UIResourceLayerImpl();
     30 
     31   void SetUIResourceId(UIResourceId uid);
     32 
     33   void SetImageBounds(const gfx::Size& image_bounds);
     34 
     35   // Sets a UV transform to be used at draw time. Defaults to (0, 0) and (1, 1).
     36   void SetUV(const gfx::PointF& top_left, const gfx::PointF& bottom_right);
     37 
     38   // Sets an opacity value per vertex. It will be multiplied by the layer
     39   // opacity value.
     40   void SetVertexOpacity(const float vertex_opacity[4]);
     41 
     42   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
     43       OVERRIDE;
     44   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
     45 
     46   virtual bool WillDraw(DrawMode draw_mode,
     47                         ResourceProvider* resource_provider) OVERRIDE;
     48   virtual void AppendQuads(RenderPass* render_pass,
     49                            const OcclusionTracker<LayerImpl>& occlusion_tracker,
     50                            AppendQuadsData* append_quads_data) OVERRIDE;
     51 
     52   virtual base::DictionaryValue* LayerTreeAsJson() const OVERRIDE;
     53 
     54  protected:
     55   UIResourceLayerImpl(LayerTreeImpl* tree_impl, int id);
     56 
     57   // The size of the resource bitmap in pixels.
     58   gfx::Size image_bounds_;
     59 
     60   UIResourceId ui_resource_id_;
     61 
     62   gfx::PointF uv_top_left_;
     63   gfx::PointF uv_bottom_right_;
     64   float vertex_opacity_[4];
     65 
     66  private:
     67   virtual const char* LayerTypeAsString() const OVERRIDE;
     68 
     69   DISALLOW_COPY_AND_ASSIGN(UIResourceLayerImpl);
     70 };
     71 
     72 }  // namespace cc
     73 
     74 #endif  // CC_LAYERS_UI_RESOURCE_LAYER_IMPL_H_
     75