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| 1 // Copyright (c) 2011 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 VIEWS_CONTROLS_RESIZE_AREA_H_ | |
| 6 #define VIEWS_CONTROLS_RESIZE_AREA_H_ | |
| 7 #pragma once | |
| 8 | |
| 9 #include <string> | |
| 10 | |
| 11 #include "views/view.h" | |
| 12 | |
| 13 namespace views { | |
| 14 | |
| 15 class ResizeAreaDelegate; | |
| 16 | |
| 17 //////////////////////////////////////////////////////////////////////////////// | |
| 18 // | |
| 19 // An invisible area that acts like a horizontal resizer. | |
| 20 // | |
| 21 //////////////////////////////////////////////////////////////////////////////// | |
| 22 class VIEWS_EXPORT ResizeArea : public View { | |
| 23 public: | |
| 24 static const char kViewClassName[]; | |
| 25 | |
| 26 explicit ResizeArea(ResizeAreaDelegate* delegate); | |
| 27 virtual ~ResizeArea(); | |
| 28 | |
| 29 // Overridden from views::View: | |
| 30 virtual std::string GetClassName() const OVERRIDE; | |
| 31 virtual gfx::NativeCursor GetCursor(const views::MouseEvent& event) OVERRIDE; | |
| 32 virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE; | |
| 33 virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE; | |
| 34 virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE; | |
| 35 virtual void OnMouseCaptureLost() OVERRIDE; | |
| 36 virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE; | |
| 37 | |
| 38 private: | |
| 39 // Report the amount the user resized by to the delegate, accounting for | |
| 40 // directionality. | |
| 41 void ReportResizeAmount(int resize_amount, bool last_update); | |
| 42 | |
| 43 // The delegate to notify when we have updates. | |
| 44 ResizeAreaDelegate* delegate_; | |
| 45 | |
| 46 // The mouse position at start (in screen coordinates). | |
| 47 int initial_position_; | |
| 48 | |
| 49 DISALLOW_COPY_AND_ASSIGN(ResizeArea); | |
| 50 }; | |
| 51 | |
| 52 } // namespace views | |
| 53 | |
| 54 #endif // VIEWS_CONTROLS_RESIZE_AREA_H_ | |
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