Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 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 ASH_WM_RESIZE_SHADOW_CONTROLLER_H_ |
| 6 | #define ASH_WM_RESIZE_SHADOW_CONTROLLER_H_ |
| 7 | |
| 8 | #include <map> |
| 9 | |
Ben Murdoch | ba5b9a6 | 2013-08-12 14:20:17 +0100 | [diff] [blame] | 10 | #include "ash/ash_export.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 11 | #include "base/basictypes.h" |
| 12 | #include "base/compiler_specific.h" |
| 13 | #include "base/memory/linked_ptr.h" |
| 14 | #include "ui/aura/window_observer.h" |
| 15 | |
| 16 | namespace aura { |
| 17 | class Window; |
| 18 | } |
| 19 | |
| 20 | namespace ash { |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 21 | class ResizeShadow; |
| 22 | |
| 23 | // ResizeShadowController observes changes to resizable windows and shows |
| 24 | // a resize handle visual effect when the cursor is near the edges. |
Ben Murdoch | ba5b9a6 | 2013-08-12 14:20:17 +0100 | [diff] [blame] | 25 | class ASH_EXPORT ResizeShadowController : public aura::WindowObserver { |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 26 | public: |
| 27 | ResizeShadowController(); |
| 28 | virtual ~ResizeShadowController(); |
| 29 | |
| 30 | // Shows the appropriate shadow for a given |window| and |hit_test| location. |
| 31 | void ShowShadow(aura::Window* window, int hit_test); |
| 32 | |
| 33 | // Hides the shadow for a |window|, if it has one. |
| 34 | void HideShadow(aura::Window* window); |
| 35 | |
Ben Murdoch | ba5b9a6 | 2013-08-12 14:20:17 +0100 | [diff] [blame] | 36 | ResizeShadow* GetShadowForWindowForTest(aura::Window* window); |
| 37 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 38 | // aura::WindowObserver overrides: |
| 39 | virtual void OnWindowBoundsChanged( |
| 40 | aura::Window* window, |
| 41 | const gfx::Rect& old_bounds, |
| 42 | const gfx::Rect& new_bounds) OVERRIDE; |
| 43 | virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; |
| 44 | |
| 45 | private: |
| 46 | typedef std::map<aura::Window*, linked_ptr<ResizeShadow> > WindowShadowMap; |
| 47 | |
| 48 | // Creates a shadow for a given window and returns it. |window_shadows_| |
| 49 | // owns the memory. |
| 50 | ResizeShadow* CreateShadow(aura::Window* window); |
| 51 | |
| 52 | // Returns the resize shadow for |window| or NULL if no shadow exists. |
| 53 | ResizeShadow* GetShadowForWindow(aura::Window* window); |
| 54 | |
| 55 | WindowShadowMap window_shadows_; |
| 56 | |
| 57 | DISALLOW_COPY_AND_ASSIGN(ResizeShadowController); |
| 58 | }; |
| 59 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 60 | } // namespace ash |
| 61 | |
| 62 | #endif // ASH_WM_RESIZE_SHADOW_CONTROLLER_H_ |