| // Copyright (c) 2012 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 ASH_WM_RESIZE_SHADOW_H_ |
| #define ASH_WM_RESIZE_SHADOW_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/scoped_ptr.h" |
| |
| namespace aura { |
| class Window; |
| } |
| namespace gfx { |
| class Rect; |
| } |
| namespace ui { |
| class Layer; |
| } |
| namespace views { |
| namespace corewm { |
| class ImageGrid; |
| } |
| } |
| |
| namespace ash { |
| namespace internal { |
| |
| // A class to render the resize edge effect when the user moves their mouse |
| // over a sizing edge. This is just a visual effect; the actual resize is |
| // handled by the EventFilter. |
| class ResizeShadow { |
| public: |
| ResizeShadow(); |
| ~ResizeShadow(); |
| |
| // Initializes the resize effect layers for a given |window|. |
| void Init(aura::Window* window); |
| |
| // Shows resize effects for one or more edges based on a |hit_test| code, such |
| // as HTRIGHT or HTBOTTOMRIGHT. |
| void ShowForHitTest(int hit_test); |
| |
| // Hides all resize effects. |
| void Hide(); |
| |
| // Updates the effect positions based on the |bounds| of the window. |
| void Layout(const gfx::Rect& bounds); |
| |
| int GetLastHitTestForTest() const { |
| return last_hit_test_; |
| } |
| |
| private: |
| // Images for the shadow effect. |
| scoped_ptr<views::corewm::ImageGrid> image_grid_; |
| |
| // Hit test value from last call to ShowForHitTest(). Used to prevent |
| // repeatedly triggering the same animations for the same hit. |
| int last_hit_test_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ResizeShadow); |
| }; |
| |
| } // namespace internal |
| } // namespace ash |
| |
| #endif // ASH_WM_RESIZE_SHADOW_H_ |