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 8 namespace blink { 9 class WebGestureCurve; 10 struct WebActiveWheelFlingParameters; 11 struct WebFloatPoint; 12 struct WebSize; 13 } 14 15 namespace content { 16 17 struct DidOverscrollParams; 18 19 // All callbacks invoked from the compositor thread. 20 class 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 protected: ~InputHandlerProxyClient()42 virtual ~InputHandlerProxyClient() {} 43 }; 44 45 } // namespace content 46 47 #endif // CONTENT_RENDERER_INPUT_INPUT_HANDLER_PROXY_CLIENT_H_ 48