| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ |
| #define UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ |
| |
| namespace views { |
| |
| // An interface implemented by objects that want to be notified about the resize |
| // event. |
| class ResizeAreaDelegate { |
| public: |
| // OnResize is sent when resizing is detected. |resize_amount| specifies the |
| // number of pixels that the user wants to resize by, and can be negative or |
| // positive (depending on direction of dragging and flips according to |
| // locale directionality: dragging to the left in LTR locales gives negative |
| // |resize_amount| but positive amount for RTL). |done_resizing| is true if |
| // the user has released the pointer (mouse, stylus, touch, etc.). |
| virtual void OnResize(int resize_amount, bool done_resizing) = 0; |
| |
| protected: |
| virtual ~ResizeAreaDelegate() {} |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_CONTROLS_RESIZE_AREA_DELEGATE_H_ |