| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef WEBKIT_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_ |
| #define WEBKIT_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_ |
| |
| #include "base/android/scoped_java_ref.h" |
| #include "third_party/WebKit/public/platform/WebFloatPoint.h" |
| #include "third_party/WebKit/public/platform/WebGestureCurve.h" |
| #include "third_party/WebKit/public/platform/WebSize.h" |
| #include "ui/gfx/point.h" |
| #include "ui/gfx/point_f.h" |
| #include "webkit/child/webkit_child_export.h" |
| |
| namespace blink { |
| class WebGestureCurveTarget; |
| } |
| |
| namespace webkit_glue { |
| |
| class WEBKIT_CHILD_EXPORT FlingAnimatorImpl : public blink::WebGestureCurve { |
| public: |
| FlingAnimatorImpl(); |
| virtual ~FlingAnimatorImpl(); |
| |
| static FlingAnimatorImpl* CreateAndroidGestureCurve( |
| const blink::WebFloatPoint& velocity, |
| const blink::WebSize&); |
| |
| virtual bool apply(double time, |
| blink::WebGestureCurveTarget* target); |
| |
| static bool RegisterJni(JNIEnv*); |
| |
| private: |
| void StartFling(const gfx::PointF& velocity); |
| // Returns true if the animation is not yet finished. |
| bool UpdatePosition(); |
| gfx::Point GetCurrentPosition(); |
| float GetCurrentVelocity(); |
| virtual void CancelFling(); |
| |
| bool is_active_; |
| |
| // Java OverScroller instance and methods. |
| base::android::ScopedJavaGlobalRef<jobject> java_scroller_; |
| |
| gfx::Point last_position_; |
| gfx::PointF last_velocity_; |
| double last_time_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FlingAnimatorImpl); |
| }; |
| |
| } // namespace webkit_glue |
| |
| #endif // WEBKIT_CHILD_FLING_ANIMATOR_IMPL_ANDROID_H_ |