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Diffstat (limited to 'src/x11support/qx11info_x11.cpp')
| -rw-r--r-- | src/x11support/qx11info_x11.cpp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/src/x11support/qx11info_x11.cpp b/src/x11support/qx11info_x11.cpp new file mode 100644 index 0000000..ebfb9db --- /dev/null +++ b/src/x11support/qx11info_x11.cpp @@ -0,0 +1,262 @@ +/**************************************************************************** +** +** 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() +{ + // ### TODO implement + return 0L; +} + +/*! + Returns the X11 user time. + + \sa setAppUserTime(), appTime() +*/ +unsigned long QX11Info::appUserTime() +{ + // ### TODO implement + return 0L; +} + +/*! + Sets the X11 time to the value specified by \a time. + + \sa appTime(), setAppUserTime() +*/ +void QX11Info::setAppTime(unsigned long time) +{ + // ### TODO implement + Q_UNUSED(time); +} + +/*! + 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(); + + QDesktopWidget *desktop = QApplication::desktop(); + QWindow *window = desktop->windowHandle(); + + xcb_timestamp_t timestamp = uint32_t(time); + QMetaObject::invokeMethod(native, "updateNetWmUserTime", Qt::DirectConnection, + Q_ARG(QWindow *,window), Q_ARG(xcb_timestamp_t, timestamp)); +} + +/*! + 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 |