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_RENDERER_INPUT_INPUT_HANDLER_PROXY_CLIENT_H_ 6#define CONTENT_RENDERER_INPUT_INPUT_HANDLER_PROXY_CLIENT_H_ 7 8namespace blink { 9class WebGestureCurve; 10struct WebActiveWheelFlingParameters; 11struct WebFloatPoint; 12struct WebSize; 13} 14 15namespace content { 16 17struct DidOverscrollParams; 18 19// All callbacks invoked from the compositor thread. 20class InputHandlerProxyClient { 21 public: 22 // Called just before the InputHandlerProxy shuts down. 23 virtual void WillShutdown() = 0; 24 25 // Transfers an active wheel fling animation initiated by a previously 26 // handled input event out to the client. 27 virtual void TransferActiveWheelFlingAnimation( 28 const blink::WebActiveWheelFlingParameters& params) = 0; 29 30 // Creates a new fling animation curve instance for device |device_source| 31 // with |velocity| and already scrolled |cumulative_scroll| pixels. 32 virtual blink::WebGestureCurve* CreateFlingAnimationCurve( 33 blink::WebGestureDevice device_source, 34 const blink::WebFloatPoint& velocity, 35 const blink::WebSize& cumulative_scroll) = 0; 36 37 virtual void DidOverscroll(const DidOverscrollParams& params) = 0; 38 39 virtual void DidStopFlinging() = 0; 40 41 virtual void DidReceiveInputEvent() = 0; 42 43 protected: 44 virtual ~InputHandlerProxyClient() {} 45}; 46 47} // namespace content 48 49#endif // CONTENT_RENDERER_INPUT_INPUT_HANDLER_PROXY_CLIENT_H_ 50