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