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Side by Side Diff: ash/wm/overview/scoped_transform_overview_window.h

Issue 23654037: Add panels as a single group of windows per display for overview window cycling. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 3 months ago
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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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