content/public/browser/android/synchronous_compositor_client.h

   1 // Copyright 2013 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_SYNCHRONOUS_COMPOSITOR_CLIENT_H_
   6 #define CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_CLIENT_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ui/gfx/vector2d_f.h"
  10
  11 namespace content {
  12
  13 class SynchronousCompositor;
  14
  15 class SynchronousCompositorClient {
  16  public:
  17   // Indication to the client that |compositor| is now initialized on the
  18   // compositor thread, and open for business.
  19   virtual void DidInitializeCompositor(SynchronousCompositor* compositor) = 0;
  20
  21   // Indication to the client that |compositor| is going out of scope, and
  22   // must not be accessed within or after this call.
  23   // NOTE if the client goes away before the compositor it must call
  24   // SynchronousCompositor::SetClient(NULL) to release the back pointer.
  25   virtual void DidDestroyCompositor(SynchronousCompositor* compositor) = 0;
  26
  27   // See LayerScrollOffsetDelegate for details.
  28   virtual void SetMaxRootLayerScrollOffset(
  29       gfx::Vector2dF max_scroll_offset) = 0;
  30   virtual void SetTotalRootLayerScrollOffset(gfx::Vector2dF new_value) = 0;
  31   virtual gfx::Vector2dF GetTotalRootLayerScrollOffset() = 0;
  32   virtual void SetRootLayerPageScaleFactor(float page_scale_factor) = 0;
  33   virtual void SetRootLayerScrollableSize(gfx::SizeF scrollable_size) = 0;
  34
  35   virtual void DidOverscroll(gfx::Vector2dF accumulated_overscroll,
  36                              gfx::Vector2dF latest_overscroll_delta,
  37                              gfx::Vector2dF current_fling_velocity) = 0;
  38
  39   // When true, should periodically call
  40   // SynchronousCompositorOutputSurface::DemandDrawHw. Note that this value
  41   // can change inside DemandDrawHw call.
  42   virtual void SetContinuousInvalidate(bool invalidate) = 0;
  43
  44   virtual void DidUpdateContent() = 0;
  45
  46  protected:
  47   SynchronousCompositorClient() {}
  48   virtual ~SynchronousCompositorClient() {}
  49
  50  private:
  51   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorClient);
  52 };
  53
  54 }  // namespace content
  55
  56 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_CLIENT_H_