blob: b49a3ff4dfec6a878a5e5bdb608b9ed7725a0947 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
// 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 UI_DISPLAY_SCREEN_H_
#define UI_DISPLAY_SCREEN_H_
#include <vector>
#include "base/macros.h"
#include "ui/display/display_export.h"
#include "ui/gfx/native_widget_types.h"
namespace gfx {
class Point;
class Rect;
}
namespace display {
class Display;
class DisplayObserver;
// A utility class for getting various info about screen size, displays,
// cursor position, etc.
//
// Note that this class does not represent an individual display connected to a
// computer -- see the Display class for that. A single Screen object exists
// regardless of the number of connected displays.
class DISPLAY_EXPORT Screen {
public:
Screen();
virtual ~Screen();
// Retrieves the single Screen object.
static Screen* GetScreen();
// Sets the global screen. NOTE: this does not take ownership of |screen|.
// Tests must be sure to reset any state they install.
static void SetScreenInstance(Screen* instance);
// Returns the current absolute position of the mouse pointer.
virtual gfx::Point GetCursorScreenPoint() = 0;
// Returns true if the cursor is directly over |window|.
virtual bool IsWindowUnderCursor(gfx::NativeWindow window) = 0;
// Returns the window at the given screen coordinate |point|.
virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) = 0;
// Returns the number of displays.
// Mirrored displays are excluded; this method is intended to return the
// number of distinct, usable displays.
virtual int GetNumDisplays() const = 0;
// Returns the list of displays that are currently available.
virtual const std::vector<Display>& GetAllDisplays() const = 0;
// Returns the display nearest the specified window.
// If the window is NULL or the window is not rooted to a display this will
// return the primary display.
virtual Display GetDisplayNearestWindow(gfx::NativeWindow window) const = 0;
// Returns the display nearest the specified view. It may still use the window
// that contains the view (i.e. if a window is spread over two displays,
// the location of the view within that window won't influence the result).
virtual Display GetDisplayNearestView(gfx::NativeView view) const;
// Returns the display nearest the specified point. |point| should be in DIPs.
virtual Display GetDisplayNearestPoint(const gfx::Point& point) const = 0;
// Returns the display that most closely intersects the provided bounds.
virtual Display GetDisplayMatching(const gfx::Rect& match_rect) const = 0;
// Returns the primary display.
virtual Display GetPrimaryDisplay() const = 0;
// Adds/Removes display observers.
virtual void AddObserver(DisplayObserver* observer) = 0;
virtual void RemoveObserver(DisplayObserver* observer) = 0;
// Converts |screen_rect| to DIP coordinates in the context of |view| clamping
// to the enclosing rect if the coordinates do not fall on pixel boundaries.
// If |view| is null, the primary display is used as the context.
virtual gfx::Rect ScreenToDIPRectInWindow(gfx::NativeView view,
const gfx::Rect& screen_rect) const;
// Converts |dip_rect| to screen coordinates in the context of |view| clamping
// to the enclosing rect if the coordinates do not fall on pixel boundaries.
// If |view| is null, the primary display is used as the context.
virtual gfx::Rect DIPToScreenRectInWindow(gfx::NativeView view,
const gfx::Rect& dip_rect) const;
// Returns true if the display with |display_id| is found and returns that
// display in |display|. Otherwise returns false and |display| remains
// untouched.
bool GetDisplayWithDisplayId(int64_t display_id, Display* display) const;
private:
static gfx::NativeWindow GetWindowForView(gfx::NativeView view);
DISALLOW_COPY_AND_ASSIGN(Screen);
};
Screen* CreateNativeScreen();
} // namespace display
#endif // UI_DISPLAY_SCREEN_H_
|
