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/geometry/size_f.h"
  10 #include "ui/gfx/geometry/vector2d_f.h"
  11
  12 namespace content {
  13
  14 class SynchronousCompositor;
  15
  16 class SynchronousCompositorClient {
  17  public:
  18   // Indication to the client that |compositor| is now initialized on the
  19   // compositor thread, and open for business.
  20   virtual void DidInitializeCompositor(SynchronousCompositor* compositor) = 0;
  21
  22   // Indication to the client that |compositor| is going out of scope, and
  23   // must not be accessed within or after this call.
  24   // NOTE if the client goes away before the compositor it must call
  25   // SynchronousCompositor::SetClient(nullptr) to release the back pointer.
  26   virtual void DidDestroyCompositor(SynchronousCompositor* compositor) = 0;
  27
  28   // See LayerScrollOffsetDelegate for details.
  29   virtual gfx::Vector2dF GetTotalRootLayerScrollOffset() = 0;
  30   virtual void UpdateRootLayerState(const gfx::Vector2dF& total_scroll_offset,
  31                                     const gfx::Vector2dF& max_scroll_offset,
  32                                     const gfx::SizeF& scrollable_size,
  33                                     float page_scale_factor,
  34                                     float min_page_scale_factor,
  35                                     float max_page_scale_factor) = 0;
  36   virtual bool IsExternalFlingActive() const = 0;
  37
  38   virtual void DidOverscroll(gfx::Vector2dF accumulated_overscroll,
  39                              gfx::Vector2dF latest_overscroll_delta,
  40                              gfx::Vector2dF current_fling_velocity) = 0;
  41
  42   // When true, should periodically call
  43   // SynchronousCompositorOutputSurface::DemandDrawHw. Note that this value
  44   // can change inside DemandDrawHw call.
  45   virtual void SetContinuousInvalidate(bool invalidate) = 0;
  46
  47   virtual void DidUpdateContent() = 0;
  48
  49  protected:
  50   SynchronousCompositorClient() {}
  51   virtual ~SynchronousCompositorClient() {}
  52
  53  private:
  54   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorClient);
  55 };
  56
  57 }  // namespace content
  58
  59 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_CLIENT_H_