chrome/browser/android/compositor/layer/content_layer.h

   1 // Copyright 2014 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 CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
   6 #define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "cc/output/filter_operations.h"
  11 #include "chrome/browser/android/compositor/layer/layer.h"
  12 #include "ui/gfx/geometry/rect.h"
  13 #include "ui/gfx/geometry/size.h"
  14
  15 namespace cc {
  16 class Layer;
  17 }
  18
  19 namespace chrome {
  20 namespace android {
  21
  22 class TabContentManager;
  23 class ThumbnailLayer;
  24
  25 // Sub layer tree representation of the contents of a tab.
  26 // Contains logic to temporarily display a static thumbnail
  27 // when the content layer is not available.
  28 // To specialize call SetProperties.
  29 class ContentLayer : public Layer {
  30  public:
  31   static scoped_refptr<ContentLayer> Create(
  32       TabContentManager* tab_content_manager);
  33   void SetProperties(int id,
  34                      bool can_use_live_layer,
  35                      bool can_use_ntp_fallback,
  36                      float static_to_view_blend,
  37                      bool should_override_content_alpha,
  38                      float content_alpha_override,
  39                      float saturation,
  40                      const gfx::Rect& desired_bounds,
  41                      const gfx::Size& content_size);
  42   bool ShowingLiveLayer() { return !static_attached_ && content_attached_; }
  43   gfx::Size GetContentSize();
  44
  45   scoped_refptr<cc::Layer> layer() override;
  46
  47  protected:
  48   explicit ContentLayer(TabContentManager* tab_content_manager);
  49   ~ContentLayer() override;
  50
  51  private:
  52   void SetContentLayer(scoped_refptr<cc::Layer> layer);
  53   void SetStaticLayer(scoped_refptr<ThumbnailLayer> layer);
  54   void ClipContentLayer(scoped_refptr<cc::Layer> content_layer,
  55                         gfx::Rect clipping);
  56   void ClipStaticLayer(scoped_refptr<ThumbnailLayer> static_layer,
  57                        gfx::Rect clipping);
  58
  59   scoped_refptr<cc::Layer> layer_;
  60   scoped_refptr<ThumbnailLayer> static_layer_;
  61   bool content_attached_;
  62   bool static_attached_;
  63
  64   cc::FilterOperations static_filter_operations_;
  65   cc::FilterOperations content_filter_operations_;
  66
  67   TabContentManager* tab_content_manager_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(ContentLayer);
  70 };
  71
  72 }  //  namespace android
  73 }  //  namespace chrome
  74
  75 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_