Upstream more layers, decoration title, layer_title_cache

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

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
+#define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/android/compositor/layer/layer.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/size.h"
+
+namespace cc {
+class Layer;
+}
+
+namespace chrome {
+namespace android {
+
+class TabContentManager;
+class ThumbnailLayer;
+
+// Sub layer tree representation of the contents of a tab.
+// Contains logic to temporarily display a static thumbnail
+// when the content layer is not available.
+// To specialize call SetProperties.
+class ContentLayer : public Layer {
+ public:
+  static scoped_refptr<ContentLayer> Create(
+      TabContentManager* tab_content_manager);
+  void SetProperties(int id,
+                     bool can_use_live_layer,
+                     bool can_use_ntp_fallback,
+                     float static_to_view_blend,
+                     bool should_override_content_alpha,
+                     float content_alpha_override,
+                     float saturation,
+                     const gfx::Rect& desired_bounds,
+                     const gfx::Size& content_size);
+  bool ShowingLiveLayer() { return !static_attached_ && content_attached_; }
+  gfx::Size GetContentSize();
+
+  scoped_refptr<cc::Layer> layer() override;
+
+ protected:
+  explicit ContentLayer(TabContentManager* tab_content_manager);
+  ~ContentLayer() override;
+
+ private:
+  void SetContentLayer(scoped_refptr<cc::Layer> layer);
+  void SetStaticLayer(scoped_refptr<ThumbnailLayer> layer);
+  void ClipContentLayer(scoped_refptr<cc::Layer> content_layer,
+                        gfx::Rect clipping,
+                        gfx::Size content_size);
+  void ClipStaticLayer(scoped_refptr<ThumbnailLayer> static_layer,
+                       gfx::Rect clipping);
+
+  scoped_refptr<cc::Layer> layer_;
+  scoped_refptr<ThumbnailLayer> static_layer_;
+  bool content_attached_;
+  bool static_attached_;
+  float saturation_;
+
+  TabContentManager* tab_content_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(ContentLayer);
+};
+
+}  //  namespace android
+}  //  namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_CONTENT_LAYER_H_