15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// An interface implemented by objects that want to be notified about the resize 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// event. 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ResizeAreaDelegate { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // OnResize is sent when resizing is detected. |resize_amount| specifies the 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // number of pixels that the user wants to resize by, and can be negative or 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // positive (depending on direction of dragging and flips according to 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // locale directionality: dragging to the left in LTR locales gives negative 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |resize_amount| but positive amount for RTL). |done_resizing| is true if 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the user has released the mouse. 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnResize(int resize_amount, bool done_resizing) = 0; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~ResizeAreaDelegate() {} 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ 29