UI Resource Manager

cc/trees/layer_tree_impl.h

 // Copyright 2012 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_IMPL_H_
 #define CC_TREES_LAYER_TREE_IMPL_H_
 
+#include <list>
 #include <string>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/values.h"
 #include "cc/layers/layer_impl.h"
+#include "cc/resources/ui_resource_client.h"
 #include "ui/base/latency_info.h"
 
 #if defined(COMPILER_GCC)
 namespace BASE_HASH_NAMESPACE {
 template<>
 struct hash<cc::LayerImpl*> {
   size_t operator()(cc::LayerImpl* ptr) const {
     return hash<size_t>()(reinterpret_cast<size_t>(ptr));
   }
 };
 }  // namespace BASE_HASH_NAMESPACE
 #endif  // COMPILER
 
 namespace cc {
 
 class DebugRectHistory;
 class FrameRateCounter;
 class HeadsUpDisplayLayerImpl;
 class LayerTreeDebugState;
 class LayerTreeHostImpl;
 class LayerTreeImpl;
 class LayerTreeSettings;
 class MemoryHistory;
 class OutputSurface;
 class PaintTimeCounter;
 class Proxy;
 class ResourceProvider;
 class TileManager;
 struct RendererCapabilities;
+struct UIResourceRequest;
+
+typedef std::list<UIResourceRequest> UIResourceRequestQueue;
 
 class CC_EXPORT LayerTreeImpl {
  public:
   static scoped_ptr<LayerTreeImpl> create(
       LayerTreeHostImpl* layer_tree_host_impl) {
     return make_scoped_ptr(new LayerTreeImpl(layer_tree_host_impl));
   }
   virtual ~LayerTreeImpl();
 
   // Methods called by the layer tree that pass-through or access LTHI.
@@ skipping 90 matching lines @@
   void set_needs_update_draw_properties() {
     needs_update_draw_properties_ = true;
   }
   bool needs_update_draw_properties() const {
     return needs_update_draw_properties_;
   }
 
   void set_needs_full_tree_sync(bool needs) { needs_full_tree_sync_ = needs; }
   bool needs_full_tree_sync() const { return needs_full_tree_sync_; }
 
+  void set_ui_resource_request_queue(const UIResourceRequestQueue& queue);
+
+  size_t ui_resource_request_queue_size() {
+    return ui_resource_request_queue_.size();
+  }
+
   const LayerImplList& RenderSurfaceLayerList() const;
 
   // These return the size of the root scrollable area and the size of
   // the user-visible scrolling viewport, in CSS layout coordinates.
   gfx::Size ScrollableSize() const;
   gfx::SizeF ScrollableViewportSize() const;
 
   LayerImpl* LayerById(int id);
 
   // These should be called by LayerImpl's ctor/dtor.
@@ skipping 21 matching lines @@
 
   void SetRootLayerScrollOffsetDelegate(
       LayerScrollOffsetDelegate* root_layer_scroll_offset_delegate);
 
   void SetLatencyInfo(const ui::LatencyInfo& latency_info);
   const ui::LatencyInfo& GetLatencyInfo();
   void ClearLatencyInfo();
 
   void WillModifyTilePriorities();
 
+  ResourceProvider::ResourceId ResourceIdForUIResource(UIResourceId uid) const;
+  void ProcessUIResourceRequestQueue();
+
   void AddLayerWithCopyOutputRequest(LayerImpl* layer);
   void RemoveLayerWithCopyOutputRequest(LayerImpl* layer);
   const std::vector<LayerImpl*> LayersWithCopyOutputRequest() const;
 
  protected:
   explicit LayerTreeImpl(LayerTreeHostImpl* layer_tree_host_impl);
 
   void UpdateSolidColorScrollbars();
 
   void UpdateRootScrollLayerSizeDelta();
@@ skipping 29 matching lines @@
   bool contents_textures_purged_;
   bool viewport_size_invalid_;
   bool needs_update_draw_properties_;
 
   // In impl-side painting mode, this is true when the tree may contain
   // structural differences relative to the active tree.
   bool needs_full_tree_sync_;
 
   ui::LatencyInfo latency_info_;
 
+  UIResourceRequestQueue ui_resource_request_queue_;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerTreeImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_IMPL_H_