content/public/browser/android/compositor.h

   1 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
   6 #define CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
   7
   8 #include "base/callback.h"
   9 #include "cc/resources/ui_resource_bitmap.h"
  10 #include "content/common/content_export.h"
  11 #include "ui/android/resources/ui_resource_provider.h"
  12 #include "ui/gfx/geometry/rect.h"
  13 #include "ui/gfx/geometry/size.h"
  14 #include "ui/gfx/native_widget_types.h"
  15
  16 class SkBitmap;
  17
  18 namespace cc {
  19 class Layer;
  20 class LayerSettings;
  21 }
  22
  23 namespace gfx {
  24 class JavaBitmap;
  25 }
  26
  27 namespace ui {
  28 class ResourceManager;
  29 class UIResourceProvider;
  30 }
  31
  32 namespace content {
  33 class CompositorClient;
  34
  35 // An interface to the browser-side compositor.
  36 class CONTENT_EXPORT Compositor {
  37  public:
  38   virtual ~Compositor() {}
  39
  40   // Performs the global initialization needed before any compositor
  41   // instance can be used. This should be called only once.
  42   static void Initialize();
  43
  44   // Creates and returns a compositor instance.  |root_window| needs to outlive
  45   // the compositor as it manages callbacks on the compositor.
  46   static Compositor* Create(CompositorClient* client,
  47                             gfx::NativeWindow root_window);
  48
  49   static const cc::LayerSettings& LayerSettings();
  50   static void SetLayerSettings(const cc::LayerSettings& settings);
  51
  52   // Attaches the layer tree.
  53   virtual void SetRootLayer(scoped_refptr<cc::Layer> root) = 0;
  54
  55   // Set the scale factor from DIP to pixel.
  56   virtual void setDeviceScaleFactor(float factor) = 0;
  57
  58   // Set the output surface bounds.
  59   virtual void SetWindowBounds(const gfx::Size& size) = 0;
  60
  61   // Set the output surface which the compositor renders into.
  62   virtual void SetSurface(jobject surface) = 0;
  63
  64   // Tells the view tree to assume a transparent background when rendering.
  65   virtual void SetHasTransparentBackground(bool flag) = 0;
  66
  67   // Request layout and draw. You only need to call this if you need to trigger
  68   // Composite *without* having modified the layer tree.
  69   virtual void SetNeedsComposite() = 0;
  70
  71   // Returns the UI resource provider associated with the compositor.
  72   virtual ui::UIResourceProvider& GetUIResourceProvider() = 0;
  73
  74   // Returns the resource manager associated with the compositor.
  75   virtual ui::ResourceManager& GetResourceManager() = 0;
  76
  77  protected:
  78   Compositor() {}
  79 };
  80
  81 }  // namespace content
  82
  83 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_