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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 #ifndef CC_LAYERS_TEXTURE_LAYER_IMPL_H_
      6 #define CC_LAYERS_TEXTURE_LAYER_IMPL_H_
      7 
      8 #include <string>
      9 
     10 #include "base/callback.h"
     11 #include "cc/base/cc_export.h"
     12 #include "cc/layers/layer_impl.h"
     13 
     14 namespace cc {
     15 class ScopedResource;
     16 
     17 class CC_EXPORT TextureLayerImpl : public LayerImpl {
     18  public:
     19   static scoped_ptr<TextureLayerImpl> Create(LayerTreeImpl* tree_impl,
     20                                              int id,
     21                                              bool uses_mailbox) {
     22     return make_scoped_ptr(new TextureLayerImpl(tree_impl, id, uses_mailbox));
     23   }
     24   virtual ~TextureLayerImpl();
     25 
     26   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* layer_tree_impl)
     27       OVERRIDE;
     28   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
     29 
     30   virtual bool WillDraw(DrawMode draw_mode,
     31                         ResourceProvider* resource_provider) OVERRIDE;
     32   virtual void AppendQuads(QuadSink* quad_sink,
     33                            AppendQuadsData* append_quads_data) OVERRIDE;
     34   virtual void DidDraw(ResourceProvider* resource_provider) OVERRIDE;
     35   virtual Region VisibleContentOpaqueRegion() const OVERRIDE;
     36   virtual void DidLoseOutputSurface() OVERRIDE;
     37 
     38   unsigned texture_id() const { return texture_id_; }
     39   void set_texture_id(unsigned id) { texture_id_ = id; }
     40   void set_premultiplied_alpha(bool premultiplied_alpha) {
     41     premultiplied_alpha_ = premultiplied_alpha;
     42   }
     43   void set_blend_background_color(bool blend) {
     44     blend_background_color_ = blend;
     45   }
     46   void set_flipped(bool flipped) { flipped_ = flipped; }
     47   void set_uv_top_left(gfx::PointF top_left) { uv_top_left_ = top_left; }
     48   void set_uv_bottom_right(gfx::PointF bottom_right) {
     49     uv_bottom_right_ = bottom_right;
     50   }
     51 
     52   // 1--2
     53   // |  |
     54   // 0--3
     55   void set_vertex_opacity(const float vertex_opacity[4]) {
     56     vertex_opacity_[0] = vertex_opacity[0];
     57     vertex_opacity_[1] = vertex_opacity[1];
     58     vertex_opacity_[2] = vertex_opacity[2];
     59     vertex_opacity_[3] = vertex_opacity[3];
     60   }
     61 
     62   virtual bool CanClipSelf() const OVERRIDE;
     63 
     64   void SetTextureMailbox(const TextureMailbox& mailbox);
     65 
     66  private:
     67   TextureLayerImpl(LayerTreeImpl* tree_impl, int id, bool uses_mailbox);
     68 
     69   virtual const char* LayerTypeAsString() const OVERRIDE;
     70   void FreeTextureMailbox();
     71 
     72   unsigned texture_id_;
     73   ResourceProvider::ResourceId external_texture_resource_;
     74   bool premultiplied_alpha_;
     75   bool blend_background_color_;
     76   bool flipped_;
     77   gfx::PointF uv_top_left_;
     78   gfx::PointF uv_bottom_right_;
     79   float vertex_opacity_[4];
     80   // This is a resource that's a GL copy of a software texture mailbox.
     81   scoped_ptr<ScopedResource> texture_copy_;
     82 
     83   TextureMailbox texture_mailbox_;
     84   bool uses_mailbox_;
     85   bool own_mailbox_;
     86   bool valid_texture_copy_;
     87 
     88   DISALLOW_COPY_AND_ASSIGN(TextureLayerImpl);
     89 };
     90 
     91 }  // namespace cc
     92 
     93 #endif  // CC_LAYERS_TEXTURE_LAYER_IMPL_H_
     94