cc: Refactored Tile::GetResourceId

cc/tile_drawing_info.h

Index: cc/tile_drawing_info.h
diff --git a/cc/tile_drawing_info.h b/cc/tile_drawing_info.h
new file mode 100644
index 0000000000000000000000000000000000000000..a25c070f131061dfd4039e32380f511439827a18
--- /dev/null
+++ b/cc/tile_drawing_info.h
@@ -0,0 +1,56 @@
+// Copyright 2013 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_TILE_DRAWING_INFO_H_
+#define CC_TILE_DRAWING_INFO_H_
+
+#include "cc/resource_provider.h"
+#include "cc/tile_manager.h"
+
+namespace cc {
+
+class Tile;
+
+class CC_EXPORT TileDrawingInfo {

[enne (OOO), 2013/02/27 22:13:57]

I'm not really convinced that Tile is so complicated that mode_ and solid_color_
can't just go in the cc::Tile class itself, especially since TileDrawingInfo
needs a backpointer to the Tile in order to work.  It also makes calling code
more verbose since they have to reach into drawing_info() to get at information
about the tile.

+  public:
+    enum Mode {
+      TEXTURE_MODE,
+      SOLID_COLOR_MODE,
+      TRANSPARENT_MODE,
+      PICTURE_PILE_MODE,
+      NUM_MODES
+    };
+
+    TileDrawingInfo(const Tile* tile)
+      : mode_(TEXTURE_MODE),
+        tile_(tile) {}
+
+    Mode mode() const {
+      return mode_;
+    }
+
+    bool is_ready_to_draw() const;

[enne (OOO), 2013/02/27 22:13:57]

style nit: don't name functions using hacker_style if your function is not an
inline simple accessor.

+
+    ResourceProvider::ResourceId get_resource_id() const;

[enne (OOO), 2013/02/27 22:13:57]

style nit: don't name functions using hacker_style if your function is not an
inline simple accessor.

+
+    SkColor get_solid_color() const {
+      DCHECK(mode_ == SOLID_COLOR_MODE);
+      
+      return solid_color_;
+    }
+
+  private:
+    friend class TileManager;
+
+    Mode mode_;
+    const Tile* tile_;
+    SkColor solid_color_;
+
+    void set_transparent();
+    void set_solid_color(const SkColor& color);
+};
+
+} // namespace cc
+
+#endif // CC_TILE_DRAWING_INFO_H_