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Diffstat (limited to 'src/x11extras/qx11info_x11.cpp')
| -rw-r--r-- | src/x11extras/qx11info_x11.cpp | 564 |
1 files changed, 0 insertions, 564 deletions
diff --git a/src/x11extras/qx11info_x11.cpp b/src/x11extras/qx11info_x11.cpp deleted file mode 100644 index 1ad1c75..0000000 --- a/src/x11extras/qx11info_x11.cpp +++ /dev/null @@ -1,564 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Copyright (C) 2016 Richard Moore <rich@kde.org> -** Copyright (C) 2016 David Faure <david.faure@kdab.com> -** Contact: https://www.qt.io/licensing/ -** -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/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 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.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 <qpa/qplatformscreen_p.h> -#include <qpa/qplatformscreen.h> -#include <qscreen.h> -#include <qwindow.h> -#include <qguiapplication.h> -#include <xcb/xcb.h> -#include <QtCore/qdebug.h> - -QT_BEGIN_NAMESPACE - -static QScreen *findScreenForVirtualDesktop(int virtualDesktopNumber) -{ - const auto screens = QGuiApplication::screens(); - for (QScreen *screen : screens) { - auto *qxcbScreen = dynamic_cast<QNativeInterface::Private::QXcbScreen *>(screen->handle()); - if (qxcbScreen && qxcbScreen->virtualDesktopNumber() == virtualDesktopNumber) - return screen; - } - return nullptr; -} - -/*! - \class QX11Info - \inmodule QtX11Extras - \since 5.1 - \brief 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 true if the application is currently running on X11. - - \since 5.2 - */ -bool QX11Info::isPlatformX11() -{ - return QGuiApplication::platformName() == QLatin1String("xcb"); -} - -/*! - 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 appDpiY() -*/ -int QX11Info::appDpiX(int screen) -{ - if (screen == -1) { - const QScreen *scr = QGuiApplication::primaryScreen(); - if (!scr) - return 75; - return qRound(scr->logicalDotsPerInchX()); - } - - QScreen *scr = findScreenForVirtualDesktop(screen); - if (!scr) - return 0; - - return scr->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 appDpiX() -*/ -int QX11Info::appDpiY(int screen) -{ - if (screen == -1) { - const QScreen *scr = QGuiApplication::primaryScreen(); - if (!scr) - return 75; - return qRound(scr->logicalDotsPerInchY()); - } - - QScreen *scr = findScreenForVirtualDesktop(screen); - if (!scr) - return 0; - - return scr->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. -*/ -quint32 QX11Info::appRootWindow(int screen) -{ - if (!qApp) - return 0; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return 0; - QScreen *scr = screen == -1 ? QGuiApplication::primaryScreen() : findScreenForVirtualDesktop(screen); - if (!scr) - return 0; - return static_cast<xcb_window_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen(QByteArrayLiteral("rootwindow"), scr))); -} - -/*! - Returns the number of the screen where the application is being - displayed. - - This method refers to screens in the original X11 meaning with a - different DISPLAY environment variable per screen. - This information is only useful if your application needs to know - on which X screen it is running. - - In a typical multi-head configuration, multiple physical monitors - are combined in one X11 screen. This means this method returns the - same number for each of the physical monitors. In such a setup you - are interested in the monitor information as provided by the X11 - RandR extension. This is available through QDesktopWidget and QScreen. - - \sa display() -*/ -int QX11Info::appScreen() -{ - if (!qApp) - return 0; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return 0; - return reinterpret_cast<qintptr>(native->nativeResourceForIntegration(QByteArrayLiteral("x11screen"))); -} - -/*! - Returns the X11 time. - - \sa setAppTime(), appUserTime() -*/ -quint32 QX11Info::appTime() -{ - if (!qApp) - return 0; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return 0; - 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() -*/ -quint32 QX11Info::appUserTime() -{ - if (!qApp) - return 0; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return 0; - 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(quint32 time) -{ - if (!qApp) - return; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return; - typedef void (*SetAppTimeFunc)(QScreen *, xcb_timestamp_t); - QScreen* screen = QGuiApplication::primaryScreen(); - SetAppTimeFunc func = reinterpret_cast<SetAppTimeFunc>(reinterpret_cast<void *>(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(quint32 time) -{ - if (!qApp) - return; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return; - typedef void (*SetAppUserTimeFunc)(QScreen *, xcb_timestamp_t); - QScreen* screen = QGuiApplication::primaryScreen(); - SetAppUserTimeFunc func = reinterpret_cast<SetAppUserTimeFunc>(reinterpret_cast<void *>(native->nativeResourceFunctionForScreen("setappusertime"))); - if (func) - func(screen, time); - else - qWarning("Internal error: QPA plugin doesn't implement setAppUserTime"); -} - -/*! - Fetches the current X11 time stamp from the X Server. - - This method creates a property notify event and blocks till it is - received back from the X Server. - - \since 5.2 -*/ -quint32 QX11Info::getTimestamp() -{ - if (!qApp) - return 0; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return 0; - QScreen* screen = QGuiApplication::primaryScreen(); - return static_cast<xcb_timestamp_t>(reinterpret_cast<quintptr>(native->nativeResourceForScreen("gettimestamp", screen))); -} - -/*! - Returns the startup ID that will be used for the next window to be shown by this process. - - After the next window is shown, the next startup ID will be empty. - - http://standards.freedesktop.org/startup-notification-spec/startup-notification-latest.txt - - \since 5.4 - \sa setNextStartupId() -*/ -QByteArray QX11Info::nextStartupId() -{ - if (!qApp) - return QByteArray(); - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return QByteArray(); - return static_cast<char *>(native->nativeResourceForIntegration("startupid")); -} - -/*! - Sets the next startup ID to \a id. - - This is the startup ID that will be used for the next window to be shown by this process. - - The startup ID of the first window comes from the environment variable DESKTOP_STARTUP_ID. - This method is useful for subsequent windows, when the request comes from another process - (e.g. via DBus). - - \since 5.4 - \sa nextStartupId() -*/ -void QX11Info::setNextStartupId(const QByteArray &id) -{ - if (!qApp) - return; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return; - typedef void (*SetStartupIdFunc)(const char*); - SetStartupIdFunc func = reinterpret_cast<SetStartupIdFunc>(reinterpret_cast<void *>(native->nativeResourceFunctionForIntegration("setstartupid"))); - if (func) - func(id.constData()); - else - qWarning("Internal error: QPA plugin doesn't implement setStartupId"); -} - -/*! - Returns the default display for the application. - - \sa appScreen() -*/ -Display *QX11Info::display() -{ - if (!qApp) - return nullptr; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return nullptr; - - void *display = native->nativeResourceForIntegration(QByteArray("display")); - return reinterpret_cast<Display *>(display); -} - -/*! - Returns the default XCB connection for the application. - - \sa display() -*/ -xcb_connection_t *QX11Info::connection() -{ - if (!qApp) - return nullptr; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return nullptr; - - void *connection = native->nativeResourceForIntegration(QByteArray("connection")); - return reinterpret_cast<xcb_connection_t *>(connection); -} - -/*! - \since 5.7 - - Returns true if there is a compositing manager running for the connection - attached to \a screen. - - If \a screen equals -1, the application's primary screen is used. -*/ -bool QX11Info::isCompositingManagerRunning(int screen) -{ - if (!qApp) - return false; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return false; - - QScreen *scr = screen == -1 ? QGuiApplication::primaryScreen() : findScreenForVirtualDesktop(screen); - if (!scr) { - qWarning() << "isCompositingManagerRunning: Could not find screen number" << screen; - return false; - } - - return native->nativeResourceForScreen(QByteArray("compositingEnabled"), scr); -} - -/*! - Returns a new peeker id or -1 if some interal error has occurred. - Each peeker id is associated with an index in the buffered native - event queue. - - For more details see QX11Info::PeekOption and peekEventQueue(). - - \sa peekEventQueue(), removePeekerId() - \since 5.10 -*/ -qint32 QX11Info::generatePeekerId() -{ - if (!qApp) - return -1; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return -1; - - typedef qint32 (*GeneratePeekerIdFunc)(void); - GeneratePeekerIdFunc generatepeekerid = reinterpret_cast<GeneratePeekerIdFunc>( - reinterpret_cast<void *>(native->nativeResourceFunctionForIntegration("generatepeekerid"))); - if (!generatepeekerid) { - qWarning("Internal error: QPA plugin doesn't implement generatePeekerId"); - return -1; - } - - return generatepeekerid(); -} - -/*! - Removes \a peekerId, which was earlier obtained via generatePeekerId(). - - Returns \c true on success or \c false if unknown peeker id was - provided or some interal error has occurred. - - \sa generatePeekerId() - \since 5.10 -*/ -bool QX11Info::removePeekerId(qint32 peekerId) -{ - if (!qApp) - return false; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return false; - - typedef bool (*RemovePeekerIdFunc)(qint32); - RemovePeekerIdFunc removePeekerId = reinterpret_cast<RemovePeekerIdFunc>( - reinterpret_cast<void *>(native->nativeResourceFunctionForIntegration("removepeekerid"))); - if (!removePeekerId) { - qWarning("Internal error: QPA plugin doesn't implement removePeekerId"); - return false; - } - - return removePeekerId(peekerId); -} - -/*! - \enum QX11Info::PeekOption - \brief An enum to tune the behavior of QX11Info::peekEventQueue(). - - \value PeekDefault - Peek from the beginning of the buffered native event queue. A peeker - id is optional with PeekDefault. If a peeker id is provided to - peekEventQueue() when using PeekDefault, then peeking starts from - the beginning of the queue, not from the cached index; thus, this - can be used to manually reset a cached index to peek from the start - of the queue. When this operation completes, the associated index - will be updated to the new position in the queue. - - \value PeekFromCachedIndex - QX11Info::peekEventQueue() can optimize the peeking algorithm by - skipping events that it already has seen in earlier calls to - peekEventQueue(). When control returns to the main event loop, - which causes the buffered native event queue to be flushed to Qt's - event queue, the cached indices are marked invalid and will be - reset on the next access. The same is true if the program - explicitly flushes the buffered native event queue by - QCoreApplication::processEvents(). - - \since 5.10 -*/ - -/*! - \typedef QX11Info::PeekerCallback - Typedef for a pointer to a function with the following signature: - - \code - bool (*PeekerCallback)(xcb_generic_event_t *event, void *peekerData); - \endcode - - The \a event is a native XCB event. - The \a peekerData is a pointer to data, passed in via peekEventQueue(). - - Return \c true from this function to stop examining the buffered - native event queue or \c false to continue. - - \note A non-capturing lambda can serve as a PeekerCallback. - \since 5.10 -*/ - -/*! - \brief Peek into the buffered XCB event queue. - - You can call peekEventQueue() periodically, when your program is busy - performing a long-running operation, to peek into the buffered native - event queue. The more time the long-running operation blocks the - program from returning control to the main event loop, the more - events will accumulate in the buffered XCB event queue. Once control - returns to the main event loop these events will be flushed to Qt's - event queue, which is a separate event queue from the queue this - function is peeking into. - - \note It is usually better to run CPU-intensive operations in a - non-GUI thread, instead of blocking the main event loop. - - The buffered XCB event queue is populated from a non-GUI thread and - therefore might be ahead of the current GUI state. To handle native - events as they are processed by the GUI thread, see - QAbstractNativeEventFilter::nativeEventFilter(). - - The \a peeker is a callback function as documented in PeekerCallback. - The \a peekerData can be used to pass in arbitrary data to the \a - peeker callback. - The \a option is an enum that tunes the behavior of peekEventQueue(). - The \a peekerId is used to track an index in the queue, for more - details see QX11Info::PeekOption. There can be several indices, - each tracked individually by a peeker id obtained via generatePeekerId(). - - This function returns \c true when the peeker has stopped the event - proccesing by returning \c true from the callback. If there were no - events in the buffered native event queue to peek at or all the - events have been processed by the peeker, this function returns \c - false. - - \sa generatePeekerId(), QAbstractNativeEventFilter::nativeEventFilter() - \since 5.10 -*/ -bool QX11Info::peekEventQueue(PeekerCallback peeker, void *peekerData, PeekOptions option, - qint32 peekerId) -{ - if (!peeker || !qApp) - return false; - QPlatformNativeInterface *native = qApp->platformNativeInterface(); - if (!native) - return false; - - typedef bool (*PeekEventQueueFunc)(PeekerCallback, void *, PeekOptions, qint32); - PeekEventQueueFunc peekeventqueue = reinterpret_cast<PeekEventQueueFunc>( - reinterpret_cast<void *>(native->nativeResourceFunctionForIntegration("peekeventqueue"))); - if (!peekeventqueue) { - qWarning("Internal error: QPA plugin doesn't implement peekEventQueue"); - return false; - } - - return peekeventqueue(peeker, peekerData, option, peekerId); -} - -QT_END_NAMESPACE |