UI Resource Manager

cc/trees/layer_tree_host_impl.h

 // Copyright 2011 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 CC_TREES_LAYER_TREE_HOST_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
+#include <list>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "cc/animation/animation_events.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/base/cc_export.h"
 #include "cc/input/input_handler.h"
 #include "cc/input/layer_scroll_offset_delegate.h"
 #include "cc/input/top_controls_manager_client.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/layers/render_pass_sink.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/output/managed_memory_policy.h"
 #include "cc/output/output_surface_client.h"
 #include "cc/output/renderer.h"
 #include "cc/quads/render_pass.h"
+#include "cc/resources/resource_provider.h"
 #include "cc/resources/tile_manager.h"
+#include "cc/resources/ui_resource_manager_client.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/rect.h"
 
 namespace cc {
 
 class CompletionEvent;
 class CompositorFrameMetadata;
 class DebugRectHistory;
 class FrameRateCounter;
 class LayerImpl;
 class LayerTreeHostImplTimeSourceAdapter;
 class LayerTreeImpl;
 class PageScaleAnimation;
 class PaintTimeCounter;
 class MemoryHistory;
 class RenderingStatsInstrumentation;
 class RenderPassDrawQuad;
-class ResourceProvider;
 class TopControlsManager;
+class UIResourceBitmap;
 struct RendererCapabilities;
+struct UIResourceRequest;
 
 // LayerTreeHost->Proxy callback interface.
 class LayerTreeHostImplClient {
  public:
   virtual void DidTryInitializeRendererOnImplThread(
       bool success,
       scoped_refptr<ContextProvider> offscreen_context_provider) = 0;
   virtual void DidLoseOutputSurfaceOnImplThread() = 0;
   virtual void OnSwapBuffersCompleteOnImplThread() = 0;
   virtual void BeginFrameOnImplThread(const BeginFrameArgs& args) = 0;
@@ skipping 10 matching lines @@
   virtual bool ReduceContentsTextureMemoryOnImplThread(
       size_t limit_bytes,
       int priority_cutoff) = 0;
   virtual void ReduceWastedContentsTextureMemoryOnImplThread() = 0;
   virtual void SendManagedMemoryStats() = 0;
   virtual bool IsInsideDraw() = 0;
   virtual void RenewTreePriority() = 0;
   virtual void RequestScrollbarAnimationOnImplThread(base::TimeDelta delay) = 0;
   virtual void DidActivatePendingTree() = 0;
 
+  virtual void UIResourceLostOnImplThread(UIResourceId uid) = 0;
+
  protected:
   virtual ~LayerTreeHostImplClient() {}
 };
 
 // LayerTreeHostImpl owns the LayerImpl trees as well as associated rendering
 // state.
 class CC_EXPORT LayerTreeHostImpl
     : public InputHandler,
       public RendererClient,
       public TileManagerClient,
@@ skipping 277 matching lines @@
   base::TimeTicks CurrentFrameTimeTicks();
   base::Time CurrentFrameTime();
 
   virtual base::TimeTicks CurrentPhysicalTimeTicks() const;
 
   scoped_ptr<base::Value> AsValue() const;
   scoped_ptr<base::Value> ActivationStateAsValue() const;
 
   bool page_scale_animation_active() const { return !!page_scale_animation_; }
 
+  void CreateUIResource(UIResourceId uid,
+                        scoped_refptr<UIResourceBitmap> bitmap);
+  // Deletes a UI resource.  May safely be called more than once.
+  void DeleteUIResource(UIResourceId uid);
+
+  ResourceProvider::ResourceId ResourceIdForUIResource(UIResourceId uid) const;
+
+  typedef std::list<UIResourceRequest> UIResourceRequestQueue;
+  void set_ui_resource_request_queue(const UIResourceRequestQueue& queue) {
+    ui_resource_request_queue_ = queue;
+  }
+
  protected:
   LayerTreeHostImpl(
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* client,
       Proxy* proxy,
       RenderingStatsInstrumentation* rendering_stats_instrumentation);
   virtual void ActivatePendingTree();
 
   // Virtual for testing.
   virtual void AnimateLayers(base::TimeTicks monotonic_time,
@@ skipping 46 matching lines @@
                                   base::TimeTicks time);
 
   static LayerImpl* GetNonCompositedContentLayerRecursive(LayerImpl* layer);
 
   void UpdateCurrentFrameTime(base::TimeTicks* ticks, base::Time* now) const;
 
   void StartScrollbarAnimationRecursive(LayerImpl* layer, base::TimeTicks time);
   void SetManagedMemoryPolicy(const ManagedMemoryPolicy& policy);
   void EnforceManagedMemoryPolicy(const ManagedMemoryPolicy& policy);
 
+  UIResourceRequestQueue ui_resource_request_queue_;

[aelias_OOO_until_Jul13, 2013/07/23 00:06:48]

This should live on the layer_tree_impl, since it's tree-associated state, not
global.  (The active tree will always have zero requests, but that's fine.)

[powei, 2013/07/24 02:28:29]

Done.

+
+  typedef base::hash_map<UIResourceId, ResourceProvider::ResourceId>
+    UIResourceMap;

[enne (OOO), 2013/07/22 23:09:15]

style nit: weird indentation.

[powei, 2013/07/24 02:28:29]

Done.

+  UIResourceMap ui_resource_map_;
+
   scoped_ptr<OutputSurface> output_surface_;
 
   // |resource_provider_| and |tile_manager_| can be NULL, e.g. when using tile-
   // free rendering - see OutputSurface::ForcedDrawToSoftwareDevice().
   scoped_ptr<ResourceProvider> resource_provider_;
   scoped_ptr<TileManager> tile_manager_;
   scoped_ptr<Renderer> renderer_;
 
   // Tree currently being drawn.
   scoped_ptr<LayerTreeImpl> active_tree_;
@@ skipping 79 matching lines @@
   scoped_ptr<AnimationRegistrar> animation_registrar_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_