cc: Refactored Tile::GetResourceId

cc/tile_drawing_info.h

+// found in the LICENSE file.
+
+#ifndef CC_TILE_DRAWING_INFO_H_
+#define CC_TILE_DRAWING_INFO_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/resource_pool.h"
+#include "cc/resource_provider.h"
+
+namespace cc {
+
+class TileManager;
+class ManagedTileState;
+
+class CC_EXPORT TileDrawingInfo {

[nduca, 2013/03/12 19:44:34]

Maybe you should instead pull ManagedTileState out to a file, and just make this
stuff part of that file?

[reveman, 2013/03/12 21:54:41]

I like this idea. tile.h wouldn't have to include tile_manager.h anymore, which
I always found a bit awkward.

+  public:
+    enum Mode {
+      TEXTURE_MODE,
+      SOLID_COLOR_MODE,
+      TRANSPARENT_MODE,

[nduca, 2013/03/12 19:44:34]

Yeah, basically I see this as a inner struct on ManagedTileState. E.g.
ManagedTileState::DrawingInfo. That makes it clearer who controls it too

+      PICTURE_PILE_MODE,
+      NUM_MODES
+    };
+
+    TileDrawingInfo()
+      : mode_(TEXTURE_MODE),
+        resource_is_being_initialized_(false),
+        can_be_freed_(true),
+        contents_swizzled_(false) {}
+
+    Mode mode() const {
+      return mode_;
+    }
+
+    bool IsReadyToDraw() const;
+
+    ResourceProvider::ResourceId get_resource_id() const {
+      DCHECK(mode_ == TEXTURE_MODE);
+      DCHECK(resource_);
+      DCHECK(!resource_is_being_initialized_);
+      return resource_->id();
+    }
+
+    SkColor get_solid_color() const {
+      DCHECK(mode_ == SOLID_COLOR_MODE);
+      
+      return solid_color_;
+    }
+
+    bool contents_swizzled() const {
+      return contents_swizzled_;
+    }
+
+  private:
+    friend class TileManager;
+    friend class ManagedTileState;
+
+    void set_transparent() {
+      mode_ = TRANSPARENT_MODE;
+    }
+
+    void set_solid_color(const SkColor& color) {
+      mode_ = SOLID_COLOR_MODE;
+      solid_color_ = color;
+    }
+
+    Mode mode_;
+    SkColor solid_color_;
+
+    scoped_ptr<ResourcePool::Resource> resource_;
+    bool resource_is_being_initialized_;
+    bool can_be_freed_;
+    bool contents_swizzled_;
+};
+
+} // namespace cc
+
+#endif // CC_TILE_DRAWING_INFO_H_