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1 // Copyright 2013 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_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_ | |
6 #define ASH_WM_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_ | |
7 | |
8 #include "base/compiler_specific.h" | |
9 #include "ui/gfx/rect.h" | |
10 #include "ui/gfx/transform.h" | |
11 | |
12 namespace aura { | |
13 class RootWindow; | |
14 class Window; | |
15 } | |
16 | |
17 namespace ui { | |
18 class Layer; | |
19 } | |
20 | |
21 namespace views { | |
22 class Widget; | |
23 } | |
24 | |
25 namespace ash { | |
26 | |
27 // Manages a window in the overview mode. This class allows transforming the | |
28 // window with a helper to determine the best fit in certain bounds and | |
29 // copies the window if being moved to another display. The window's state is | |
30 // restored on destruction of this object. | |
31 class ScopedTransformOverviewWindow { | |
32 public: | |
33 // The duration of transitions used for window transforms. | |
34 static const int kTransitionMilliseconds; | |
35 | |
36 // Returns the transform necessary to fit |rect| into |bounds| preserving | |
37 // aspect ratio and centering. | |
38 static gfx::Transform GetTransformForRectPreservingAspectRatio( | |
39 const gfx::Rect& rect, const gfx::Rect& bounds); | |
sky
2013/09/13 21:46:44
nit: one param per line when you wrap.
flackr
2013/09/13 22:28:38
Done.
| |
40 | |
41 explicit ScopedTransformOverviewWindow(aura::Window* window); | |
42 virtual ~ScopedTransformOverviewWindow(); | |
43 | |
44 // Returns true if this window selector window contains the |target|. This is | |
45 // used to determine if an event targetted this window. | |
46 bool Contains(const aura::Window* target) const; | |
47 | |
48 // Restores the window if it was minimized. | |
49 void RestoreWindow(); | |
50 | |
51 // Restores this window on exit rather than returning it to a minimized state | |
52 // if it was minimized on entering overview mode. | |
53 void RestoreWindowOnExit(); | |
54 | |
55 // Informs the ScopedTransformOverviewWindow that the window being watched was | |
56 // destroyed. This resets the internal window pointer to avoid calling | |
57 // anything on the window at destruction time. | |
58 void OnWindowDestroyed(); | |
59 | |
60 // Sets |transform| on the window and a copy of the window if the target | |
61 // |root_window| is not the window's root window. | |
62 void SetTransform(aura::RootWindow* root_window, | |
63 const gfx::Transform& transform); | |
64 | |
65 aura::Window* window() const { return window_; } | |
66 | |
67 protected: | |
68 // Dispatched when the overview of this window has started. | |
69 virtual void OnOverviewStarted(); | |
70 | |
71 private: | |
72 // A weak pointer to the real window in the overview. | |
73 aura::Window* window_; | |
74 | |
75 // A copy of the window used to transition the window to another root. | |
76 views::Widget* window_copy_; | |
77 | |
78 // A weak pointer to a deep copy of the window's layers. | |
79 ui::Layer* layer_; | |
80 | |
81 // If true, the window was minimized and should be restored if the window | |
82 // was not selected. | |
83 bool minimized_; | |
84 | |
85 // True if the window has been transformed for overview mode. | |
86 bool overview_started_; | |
87 | |
88 // The original transform of the window before entering overview mode. | |
89 gfx::Transform original_transform_; | |
90 | |
91 DISALLOW_COPY_AND_ASSIGN(ScopedTransformOverviewWindow); | |
92 }; | |
93 | |
94 } // namespace ash | |
95 | |
96 #endif // ASH_WM_OVERVIEW_SCOPED_TRANSFORM_OVERVIEW_WINDOW_H_ | |
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