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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Copyright (C) 2012 Richard Moore <rich@kde.org>
** Copyright (C) 2012 David Faure <david.faure@kdab.com>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// An implementation of QX11Info for Qt5. This code only provides the
// static methods of the QX11Info, not the methods for getting information
// about particular widgets or pixmaps.
//
#include "qx11info_x11.h"
#include <qpa/qplatformnativeinterface.h>
#include <qpa/qplatformwindow.h>
#include <qscreen.h>
#include <qdesktopwidget.h>
#include <qwindow.h>
#include <qapplication.h>
#include <xcb/xcb.h>
QT_BEGIN_NAMESPACE
/*!
\class QX11Info
\brief The QX11Info class provides information about the X display
configuration.
The class provides two APIs: a set of non-static functions that
provide information about a specific widget or pixmap, and a set
of static functions that provide the default information for the
application.
\warning This class is only available on X11. For querying
per-screen information in a portable way, use QDesktopWidget.
*/
/*!
Constructs an empty QX11Info object.
*/
QX11Info::QX11Info()
{
}
/*!
Returns the horizontal resolution of the given \a screen in terms of the
number of dots per inch.
The \a screen argument is an X screen number. Be aware that if
the user's system uses Xinerama (as opposed to traditional X11
multiscreen), there is only one X screen. Use QDesktopWidget to
query for information about Xinerama screens.
\sa setAppDpiX(), appDpiY()
*/
int QX11Info::appDpiX(int screen)
{
if (screen == -1) {
const QScreen *scr = QGuiApplication::primaryScreen();
if (!scr)
return 75;
return qRound(scr->logicalDotsPerInchX());
}
QList<QScreen *> screens = QGuiApplication::screens();
if (screen >= screens.size())
return 0;
return screens[screen]->logicalDotsPerInchX();
}
/*!
Returns the vertical resolution of the given \a screen in terms of the
number of dots per inch.
The \a screen argument is an X screen number. Be aware that if
the user's system uses Xinerama (as opposed to traditional X11
multiscreen), there is only one X screen. Use QDesktopWidget to
query for information about Xinerama screens.
\sa setAppDpiY(), appDpiX()
*/
int QX11Info::appDpiY(int screen)
{
if (screen == -1) {
const QScreen *scr = QGuiApplication::primaryScreen();
if (!scr)
return 75;
return qRound(scr->logicalDotsPerInchY());
}
QList<QScreen *> screens = QGuiApplication::screens();
if (screen > screens.size())
return 0;
return screens[screen]->logicalDotsPerInchY();
}
/*!
Returns a handle for the applications root window on the given \a screen.
The \a screen argument is an X screen number. Be aware that if
the user's system uses Xinerama (as opposed to traditional X11
multiscreen), there is only one X screen. Use QDesktopWidget to
query for information about Xinerama screens.
\sa QApplication::desktop()
*/
Qt::HANDLE QX11Info::appRootWindow(int screen)
{
if (!qApp)
return 0;
#if 0
// This looks like it should work, but gives the wrong value.
QDesktopWidget *desktop = QApplication::desktop();
QWidget *screenWidget = desktop->screen(screen);
QWindow *window = screenWidget->windowHandle();
#else
Q_UNUSED(screen);
QDesktopWidget *desktop = QApplication::desktop();
QWindow *window = desktop->windowHandle();
#endif
return Qt::HANDLE(window->winId());
}
/*!
Returns the number of the screen where the application is being
displayed.
\sa display(), screen()
*/
int QX11Info::appScreen()
{
if (!qApp)
return 0;
QDesktopWidget *desktop = QApplication::desktop();
return desktop->primaryScreen();
}
/*!
Returns the X11 time.
\sa setAppTime(), appUserTime()
*/
unsigned long QX11Info::appTime()
{
if (!qApp)
return 0;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
QScreen* screen = QGuiApplication::primaryScreen();
return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen("apptime", screen)));
}
/*!
Returns the X11 user time.
\sa setAppUserTime(), appTime()
*/
unsigned long QX11Info::appUserTime()
{
if (!qApp)
return 0;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
QScreen* screen = QGuiApplication::primaryScreen();
return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen("appusertime", screen)));
}
/*!
Sets the X11 time to the value specified by \a time.
\sa appTime(), setAppUserTime()
*/
void QX11Info::setAppTime(unsigned long time)
{
if (!qApp)
return;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
typedef void (*SetAppTimeFunc)(QScreen *, xcb_timestamp_t);
QScreen* screen = QGuiApplication::primaryScreen();
SetAppTimeFunc func = reinterpret_cast<SetAppTimeFunc>(native->nativeResourceFunctionForScreen("setapptime"));
if (func)
func(screen, time);
else
qWarning("Internal error: QPA plugin doesn't implement setAppTime");
}
/*!
Sets the X11 user time as specified by \a time.
\sa appUserTime(), setAppTime()
*/
void QX11Info::setAppUserTime(unsigned long time)
{
if (!qApp)
return;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
typedef void (*SetAppUserTimeFunc)(QScreen *, xcb_timestamp_t);
QScreen* screen = QGuiApplication::primaryScreen();
SetAppUserTimeFunc func = reinterpret_cast<SetAppUserTimeFunc>(native->nativeResourceFunctionForScreen("setappusertime"));
if (func)
func(screen, time);
else
qWarning("Internal error: QPA plugin doesn't implement setAppUserTime");
}
/*!
Returns the default display for the application.
\sa appScreen()
*/
Display *QX11Info::display()
{
if (!qApp)
return NULL;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
void *display = native->nativeResourceForScreen(QByteArray("display"), QGuiApplication::primaryScreen());
return reinterpret_cast<Display *>(display);
}
/*!
Returns the default XCB connection for the application.
\sa display()
*/
xcb_connection_t *QX11Info::connection()
{
if (!qApp)
return NULL;
QPlatformNativeInterface *native = qApp->platformNativeInterface();
void *connection = native->nativeResourceForWindow(QByteArray("connection"), 0);
return reinterpret_cast<xcb_connection_t *>(connection);
}
QT_END_NAMESPACE
|
