content/child/fling_animator_impl_android.h

   1 // Copyright 2014 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_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_
   6 #define CONTENT_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_
   7
   8
   9 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  10 #include "third_party/WebKit/public/platform/WebGestureCurve.h"
  11 #include "third_party/WebKit/public/platform/WebSize.h"
  12 #include "ui/gfx/android/scroller.h"
  13 #include "ui/gfx/point_f.h"
  14
  15 namespace blink {
  16 class WebGestureCurveTarget;
  17 }
  18
  19 namespace content {
  20
  21 class FlingAnimatorImpl : public blink::WebGestureCurve {
  22  public:
  23   FlingAnimatorImpl();
  24   virtual ~FlingAnimatorImpl();
  25
  26   static FlingAnimatorImpl* CreateAndroidGestureCurve(
  27       const blink::WebFloatPoint& velocity,
  28       const blink::WebSize&);
  29
  30   virtual bool apply(double time, blink::WebGestureCurveTarget* target);
  31
  32  private:
  33   void StartFling(const gfx::PointF& velocity);
  34   void CancelFling();
  35
  36   bool is_active_;
  37
  38   gfx::Scroller scroller_;
  39
  40   gfx::PointF last_position_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(FlingAnimatorImpl);
  43 };
  44
  45 }  // namespace webkit_glue
  46
  47 #endif  // CONTENT_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_