cc/image_layer.h

   1 // Copyright 2010 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_IMAGE_LAYER_H_
   6 #define CC_IMAGE_LAYER_H_
   7
   8 #include "cc/cc_export.h"
   9 #include "cc/content_layer.h"
  10 #include "third_party/skia/include/core/SkBitmap.h"
  11
  12 namespace cc {
  13
  14 class ImageLayerUpdater;
  15
  16 // A Layer that contains only an Image element.
  17 class CC_EXPORT ImageLayer : public TiledLayer {
  18 public:
  19     static scoped_refptr<ImageLayer> create();
  20
  21     virtual bool drawsContent() const OVERRIDE;
  22     virtual void setTexturePriorities(const PriorityCalculator&) OVERRIDE;
  23     virtual void update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats*) OVERRIDE;
  24     virtual void calculateContentsScale(
  25         float idealContentsScale,
  26         bool animating_transform_to_screen,
  27         float* contentsScaleX,
  28         float* contentsScaleY,
  29         gfx::Size* contentBounds) OVERRIDE;
  30
  31     void setBitmap(const SkBitmap& image);
  32
  33 private:
  34     ImageLayer();
  35     virtual ~ImageLayer();
  36
  37     void setTilingOption(TilingOption);
  38
  39     virtual LayerUpdater* updater() const OVERRIDE;
  40     virtual void createUpdaterIfNeeded() OVERRIDE;
  41     float imageContentsScaleX() const;
  42     float imageContentsScaleY() const;
  43
  44     SkBitmap m_bitmap;
  45
  46     scoped_refptr<ImageLayerUpdater> m_updater;
  47 };
  48
  49 }  // namespace cc
  50
  51 #endif  // CC_IMAGE_LAYER_H_