content/browser/renderer_host/touch_smooth_scroll_gesture_android.h

   1 // Copyright (c) 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_BROWSER_RENDERER_HOST_TOUCH_SMOOTH_GESTURE_ANDROID_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_TOUCH_SMOOTH_GESTURE_ANDROID_H_
   7
   8 #include "base/android/jni_android.h"
   9 #include "base/time.h"
  10 #include "content/browser/renderer_host/smooth_scroll_calculator.h"
  11 #include "content/port/browser/smooth_scroll_gesture.h"
  12
  13 namespace content {
  14
  15 class ContentViewCore;
  16 class RenderWidgetHost;
  17
  18 class TouchSmoothScrollGestureAndroid : public SmoothScrollGesture {
  19  public:
  20   TouchSmoothScrollGestureAndroid(
  21       int pixels_to_scroll,
  22       RenderWidgetHost* rwh,
  23       base::android::ScopedJavaLocalRef<jobject> java_scroller);
  24
  25   // Called by the java side once the TimeAnimator ticks.
  26   double GetScrollDelta(JNIEnv* env, jobject obj, double scale);
  27   bool HasFinished(JNIEnv* env, jobject obj);
  28   void SetHasSentMotionUp(JNIEnv* env, jobject obj);
  29
  30   // SmoothScrollGesture
  31   virtual bool ForwardInputEvents(base::TimeTicks now,
  32                                   RenderWidgetHost* host) OVERRIDE;
  33
  34  private:
  35   virtual ~TouchSmoothScrollGestureAndroid();
  36
  37   SmoothScrollCalculator smooth_scroll_calculator_;
  38
  39   int pixels_scrolled_;
  40   bool has_started_;
  41   bool has_sent_motion_up_;
  42
  43   int pixels_to_scroll_;
  44   RenderWidgetHost* rwh_;
  45   base::android::ScopedJavaGlobalRef<jobject> java_scroller_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(TouchSmoothScrollGestureAndroid);
  48 };
  49
  50 }  // namespace content
  51
  52 #endif  // CONTENT_BROWSER_RENDERER_HOST_TOUCH_SMOOTH_GESTURE_ANDROID_H_