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 "base/callback_forward.h"
  10 #include "base/time/time.h"
  11 #include "ui/gfx/geometry/size_f.h"
  12 #include "ui/gfx/geometry/vector2d_f.h"
  13
  14 namespace content {
  15
  16 class SynchronousCompositor;
  17
  18 class SynchronousCompositorClient {
  19  public:
  20   // Indication to the client that |compositor| is now initialized on the
  21   // compositor thread, and open for business.
  22   virtual void DidInitializeCompositor(SynchronousCompositor* compositor) = 0;
  23
  24   // Indication to the client that |compositor| is going out of scope, and
  25   // must not be accessed within or after this call.
  26   // NOTE if the client goes away before the compositor it must call
  27   // SynchronousCompositor::SetClient(nullptr) to release the back pointer.
  28   virtual void DidDestroyCompositor(SynchronousCompositor* compositor) = 0;
  29
  30   // See LayerScrollOffsetDelegate for details.
  31   virtual gfx::Vector2dF GetTotalRootLayerScrollOffset() = 0;
  32   virtual void UpdateRootLayerState(const gfx::Vector2dF& total_scroll_offset,
  33                                     const gfx::Vector2dF& max_scroll_offset,
  34                                     const gfx::SizeF& scrollable_size,
  35                                     float page_scale_factor,
  36                                     float min_page_scale_factor,
  37                                     float max_page_scale_factor) = 0;
  38   virtual bool IsExternalScrollActive() const = 0;
  39
  40   typedef base::Callback<void(base::TimeTicks)> AnimationCallback;
  41   virtual void SetNeedsAnimateScroll(const AnimationCallback& animation) = 0;
  42
  43   virtual void DidOverscroll(gfx::Vector2dF accumulated_overscroll,
  44                              gfx::Vector2dF latest_overscroll_delta,
  45                              gfx::Vector2dF current_fling_velocity) = 0;
  46
  47   virtual void PostInvalidate() = 0;
  48
  49   virtual void DidUpdateContent() = 0;
  50
  51  protected:
  52   SynchronousCompositorClient() {}
  53   virtual ~SynchronousCompositorClient() {}
  54
  55  private:
  56   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorClient);
  57 };
  58
  59 }  // namespace content
  60
  61 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_CLIENT_H_