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Move QtX11Extras into QtGui as private API

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from qt/qtx11extras 0e67fb41cfc4b4bfbaa7dc75f8ddebdf5a08e836.

The plan is to expose these as native interfaces, so this is a first
step.

Task-number: QTBUG-83251
Change-Id: Iecba8db9a4f616a08a3750ddaae08cc30ec66f89
Reviewed-by: Liang Qi <liang.qi@qt.io>
This commit is contained in:
Tor Arne Vestbø 2021-05-10 13:03:38 +02:00 committed by Liang Qi
parent 066a1de8e7
commit edceff30b4
7 changed files with 1064 additions and 0 deletions
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5
src/gui/CMakeLists.txt
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@ -967,6 +967,11 @@ qt_internal_extend_target(Gui CONDITION UNIX AND (QT_FEATURE_xcb OR NOT UIKIT)
platform/unix/qgenericunixservices.cpp platform/unix/qgenericunixservices_p.h
)
qt_internal_extend_target(Gui CONDITION UNIX AND (QT_FEATURE_xcb)
SOURCES
platform/unix/qtx11extras.cpp platform/unix/qtx11extras_p.h
)
qt_internal_extend_target(Gui CONDITION TARGET Qt::DBus AND UNIX AND (QT_FEATURE_xcb OR NOT UIKIT)
LIBRARIES
Qt::DBus

548
src/gui/platform/unix/qtx11extras.cpp Normal file
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@ -0,0 +1,548 @@
/****************************************************************************
**
** Copyright (C) 2021 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtx11extras_p.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 QtGui
\since 6.2
\internal
\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 6.2
*/
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.
*/
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
\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).
\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);
}
/*!
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()
*/
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()
*/
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().
*/
/*!
\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.
*/
/*!
\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()
*/
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

110
src/gui/platform/unix/qtx11extras_p.h Normal file
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@ -0,0 +1,110 @@
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTX11EXTRAS_P_H
#define QTX11EXTRAS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qtguiglobal.h>
#include <xcb/xcb.h>
typedef struct _XDisplay Display;
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QX11Info
{
public:
enum PeekOption {
PeekDefault = 0,
PeekFromCachedIndex = 1
};
Q_DECLARE_FLAGS(PeekOptions, PeekOption)
static bool isPlatformX11();
static int appDpiX(int screen=-1);
static int appDpiY(int screen=-1);
static quint32 appRootWindow(int screen=-1);
static int appScreen();
static quint32 appTime();
static quint32 appUserTime();
static void setAppTime(quint32 time);
static void setAppUserTime(quint32 time);
static quint32 getTimestamp();
static QByteArray nextStartupId();
static void setNextStartupId(const QByteArray &id);
static Display *display();
static xcb_connection_t *connection();
static bool isCompositingManagerRunning(int screen = -1);
static qint32 generatePeekerId();
static bool removePeekerId(qint32 peekerId);
typedef bool (*PeekerCallback)(xcb_generic_event_t *event, void *peekerData);
static bool peekEventQueue(PeekerCallback peeker, void *peekerData = nullptr,
PeekOptions option = PeekDefault, qint32 peekerId = -1);
private:
QX11Info();
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QX11Info::PeekOptions)
QT_END_NAMESPACE
#endif // QTX11EXTRAS_P_H

1
tests/auto/gui/CMakeLists.txt
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@ -17,3 +17,4 @@ endif()
if(QT_FEATURE_vulkan AND NOT UIKIT)
add_subdirectory(qvulkan)
endif()
add_subdirectory(platform)

3
tests/auto/gui/platform/CMakeLists.txt Normal file
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@ -0,0 +1,3 @@
if(QT_FEATURE_xcb)
add_subdirectory(qx11info)
endif()

7
tests/auto/gui/platform/qx11info/CMakeLists.txt Normal file
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@ -0,0 +1,7 @@
qt_internal_add_test(tst_qx11info
SOURCES
tst_qx11info.cpp
PUBLIC_LIBRARIES
Qt::GuiPrivate
XCB::XCB
)

390
tests/auto/gui/platform/qx11info/tst_qx11info.cpp Normal file
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@ -0,0 +1,390 @@
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Copyright (C) 2016 David Faure <david.faure@kdab.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtTest/QtTest>
#include <QtGui/private/qtx11extras_p.h>
class tst_QX11Info : public QObject
{
Q_OBJECT
private slots:
void staticFunctionsBeforeQGuiApplication();
void startupId();
void isPlatformX11();
void appTime();
void peeker();
void isCompositingManagerRunning();
};
void tst_QX11Info::staticFunctionsBeforeQGuiApplication()
{
QVERIFY(!QGuiApplication::instance());
// none of these functions should crash if QGuiApplication hasn't
// been constructed
Display *display = QX11Info::display();
QCOMPARE(display, (Display *)0);
#if 0
const char *appClass = QX11Info::appClass();
QCOMPARE(appClass, (const char *)0);
#endif
int appScreen = QX11Info::appScreen();
QCOMPARE(appScreen, 0);
#if 0
int appDepth = QX11Info::appDepth();
QCOMPARE(appDepth, 32);
int appCells = QX11Info::appCells();
QCOMPARE(appCells, 0);
Qt::HANDLE appColormap = QX11Info::appColormap();
QCOMPARE(appColormap, static_cast<Qt::HANDLE>(0));
void *appVisual = QX11Info::appVisual();
QCOMPARE(appVisual, static_cast<void *>(0));
#endif
unsigned long appRootWindow = QX11Info::appRootWindow();
QCOMPARE(appRootWindow, static_cast<unsigned long>(0));
#if 0
bool appDefaultColormap = QX11Info::appDefaultColormap();
QCOMPARE(appDefaultColormap, true);
bool appDefaultVisual = QX11Info::appDefaultVisual();
QCOMPARE(appDefaultVisual, true);
#endif
int appDpiX = QX11Info::appDpiX();
int appDpiY = QX11Info::appDpiY();
QCOMPARE(appDpiX, 75);
QCOMPARE(appDpiY, 75);
unsigned long appTime = QX11Info::appTime();
unsigned long appUserTime = QX11Info::appUserTime();
QCOMPARE(appTime, 0ul);
QCOMPARE(appUserTime, 0ul);
// setApp*Time do nothing without QGuiApplication
QX11Info::setAppTime(1234);
QX11Info::setAppUserTime(5678);
appTime = QX11Info::appTime();
appUserTime = QX11Info::appUserTime();
QCOMPARE(appTime, 0ul);
QCOMPARE(appTime, 0ul);
QX11Info::isCompositingManagerRunning();
}
static const char idFromEnv[] = "startupid_TIME123456";
void initialize()
{
qputenv("DESKTOP_STARTUP_ID", idFromEnv);
}
Q_CONSTRUCTOR_FUNCTION(initialize)
void tst_QX11Info::startupId()
{
int argc = 0;
QGuiApplication app(argc, 0);
// This relies on the fact that no widget was shown yet,
// so please make sure this method is always the first test.
QCOMPARE(QString(QX11Info::nextStartupId()), QString(idFromEnv));
QWindow w;
w.show();
QVERIFY(QX11Info::nextStartupId().isEmpty());
QByteArray idSecondWindow = "startupid2_TIME234567";
QX11Info::setNextStartupId(idSecondWindow);
QCOMPARE(QX11Info::nextStartupId(), idSecondWindow);
QWindow w2;
w2.show();
QVERIFY(QX11Info::nextStartupId().isEmpty());
}
void tst_QX11Info::isPlatformX11()
{
int argc = 0;
QGuiApplication app(argc, 0);
QVERIFY(QX11Info::isPlatformX11());
}
void tst_QX11Info::appTime()
{
int argc = 0;
QGuiApplication app(argc, 0);
// No X11 event received yet
QCOMPARE(QX11Info::appTime(), 0ul);
QCOMPARE(QX11Info::appUserTime(), 0ul);
// Trigger some X11 events
QWindow window;
window.show();
QTest::qWait(100);
QVERIFY(QX11Info::appTime() > 0);
unsigned long t0 = QX11Info::appTime();
unsigned long t1 = t0 + 1;
QX11Info::setAppTime(t1);
QCOMPARE(QX11Info::appTime(), t1);
unsigned long u0 = QX11Info::appUserTime();
unsigned long u1 = u0 + 1;
QX11Info::setAppUserTime(u1);
QCOMPARE(QX11Info::appUserTime(), u1);
}
class PeekerTest : public QWindow
{
public:
PeekerTest()
{
setGeometry(100, 100, 400, 400);
m_peekerFirstId = QX11Info::generatePeekerId();
QVERIFY(m_peekerFirstId >= 0);
m_peekerSecondId = QX11Info::generatePeekerId();
QVERIFY(m_peekerSecondId == m_peekerFirstId + 1);
// Get X atoms
xcb_connection_t *c = QX11Info::connection();
const char *first = "QT_XCB_PEEKER_TEST_FIRST";
const char *second = "QT_XCB_PEEKER_TEST_SECOND";
xcb_intern_atom_reply_t *reply =
xcb_intern_atom_reply(c, xcb_intern_atom(c, false, strlen(first), first), 0);
QVERIFY2(reply != nullptr, first);
m_atomFirst = reply->atom;
free(reply);
reply = xcb_intern_atom_reply(c, xcb_intern_atom(c, false, strlen(second), second), 0);
QVERIFY2(reply != nullptr, second);
m_atomSecond = reply->atom;
free(reply);
}
protected:
void triggerPropertyNotifyEvents()
{
xcb_window_t rootWindow = QX11Info::appRootWindow();
xcb_connection_t *connection = QX11Info::connection();
xcb_change_property(connection, XCB_PROP_MODE_APPEND, rootWindow, m_atomFirst,
XCB_ATOM_INTEGER, 32, 0, nullptr);
xcb_change_property(connection, XCB_PROP_MODE_APPEND, rootWindow, m_atomSecond,
XCB_ATOM_INTEGER, 32, 0, nullptr);
xcb_flush(connection);
}
static bool checkForPropertyNotifyByAtom(xcb_generic_event_t *event, void *data)
{
bool isPropertyNotify = (event->response_type & ~0x80) == XCB_PROPERTY_NOTIFY;
if (isPropertyNotify) {
xcb_property_notify_event_t *pn =
reinterpret_cast<xcb_property_notify_event_t *>(event);
xcb_atom_t *atom = static_cast<xcb_atom_t *>(data);
if (pn->atom == *atom)
return true;
}
return false;
}
bool sanityCheckPeeking(xcb_generic_event_t *event)
{
m_countWithCaching++;
bool isPropertyNotify = (event->response_type & ~0x80) == XCB_PROPERTY_NOTIFY;
if (isPropertyNotify) {
xcb_property_notify_event_t *pn =
reinterpret_cast<xcb_property_notify_event_t *>(event);
if (pn->atom == m_atomFirst) {
if (m_indexFirst == -1) {
m_indexFirst = m_countWithCaching;
// continue peeking, maybe the second event is already in the queue
return false;
}
m_foundFirstEventAgain = true;
// Return so we can fail the test with QVERIFY2, for more details
// see QTBUG-62354
return true;
}
// Let it peek to the end, even when the second event was found
if (pn->atom == m_atomSecond) {
m_indexSecond = m_countWithCaching;
if (m_indexFirst == -1) {
m_foundSecondBeforeFirst = true;
// Same as above, see QTBUG-62354
return true;
}
}
}
return false;
}
void exposeEvent(QExposeEvent *) override
{
if (m_ignoreSubsequentExpose)
return;
// We don't want to execute this handler again in case there are more expose
// events after calling QCoreApplication::processEvents() later in this test
m_ignoreSubsequentExpose = true;
xcb_flush(QX11Info::connection());
bool found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomFirst);
QVERIFY2(!found, "Found m_atomFirst which should not be in the queue yet");
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomSecond);
QVERIFY2(!found, "Found m_atomSecond which should not be in the queue yet");
triggerPropertyNotifyEvents();
bool earlyExit = false;
while (!earlyExit && (m_indexFirst == -1 || m_indexSecond == -1)) {
earlyExit = QX11Info::peekEventQueue([](xcb_generic_event_t *event, void *data) {
return static_cast<PeekerTest *>(data)->sanityCheckPeeking(event);
}, this, QX11Info::PeekFromCachedIndex, m_peekerFirstId);
if (m_countWithCaching == -1)
QVERIFY2(!earlyExit, "Unexpected return value for an empty queue");
}
QVERIFY2(!m_foundFirstEventAgain,
"Found the same notify event twice, maybe broken index cache?");
QVERIFY2(!m_foundSecondBeforeFirst, "Found second event before first");
QVERIFY2(!earlyExit,
"Unexpected return value for a peeker that always scans to the end of the queue");
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomFirst,
QX11Info::PeekDefault, m_peekerFirstId);
QVERIFY2(found, "Failed to find m_atomFirst, when peeking from start and ignoring "
"the cached index associated with the passed in peeker id");
// The above call updated index cache for m_peekerFirstId to the position of
// event(m_atomFirst) + 1
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomSecond,
QX11Info::PeekFromCachedIndex, m_peekerFirstId);
QVERIFY2(found, "Unexpectedly failed to find m_atomSecond");
QVERIFY(m_indexFirst <= m_countWithCaching);
QVERIFY(m_indexSecond <= m_countWithCaching);
QVERIFY(m_indexFirst < m_indexSecond);
QX11Info::peekEventQueue([](xcb_generic_event_t *, void *data) {
static_cast<PeekerTest *>(data)->m_countFromStart++;
return false;
}, this);
QVERIFY(m_countWithCaching <= m_countFromStart);
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomFirst,
QX11Info::PeekFromCachedIndex, m_peekerSecondId);
QVERIFY2(found, "m_peekerSecondId failed to find the event");
// Remove peeker id from within the peeker while using it for peeking
QX11Info::peekEventQueue([](xcb_generic_event_t *, void *data) {
PeekerTest *obj = static_cast<PeekerTest *>(data);
QX11Info::removePeekerId(obj->m_peekerSecondId);
return true;
}, this, QX11Info::PeekFromCachedIndex, m_peekerSecondId);
// Check that it really has been removed from the cache
bool ok = QX11Info::peekEventQueue([](xcb_generic_event_t *, void *) {
return true;
}, nullptr, QX11Info::PeekFromCachedIndex, m_peekerSecondId);
QVERIFY2(!ok, "Unexpected return value when attempting to peek from cached "
"index when peeker id has been removed from the cache");
// Sanity check other input combinations
QVERIFY(!QX11Info::removePeekerId(-99));
ok = QX11Info::peekEventQueue([](xcb_generic_event_t *, void *) {
return true;
}, nullptr, QX11Info::PeekFromCachedIndex, -100);
QVERIFY2(!ok, "PeekFromCachedIndex with invalid peeker id unexpectedly succeeded");
ok = QX11Info::peekEventQueue([](xcb_generic_event_t *, void *) {
return true;
}, nullptr, QX11Info::PeekDefault, -100);
QVERIFY2(!ok, "PeekDefault with invalid peeker id unexpectedly succeeded");
ok = QX11Info::peekEventQueue([](xcb_generic_event_t *, void *) {
return true;
}, nullptr, QX11Info::PeekFromCachedIndex);
QVERIFY2(!ok, "PeekFromCachedIndex without peeker id unexpectedly succeeded");
ok = QX11Info::peekEventQueue([](xcb_generic_event_t *, void *) {
return true;
}, nullptr, QX11Info::PeekDefault);
QVERIFY2(ok, "PeekDefault without peeker id unexpectedly failed");
QCoreApplication::processEvents(); // Flush buffered events
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomFirst);
QVERIFY2(!found, "Found m_atomFirst in the queue after flushing");
found = QX11Info::peekEventQueue(checkForPropertyNotifyByAtom, &m_atomSecond);
QVERIFY2(!found, "Found m_atomSecond in the queue after flushing");
QVERIFY(QX11Info::removePeekerId(m_peekerFirstId));
QVERIFY2(!QX11Info::removePeekerId(m_peekerFirstId),
"Removing the same peeker id twice unexpectedly succeeded");
#if 0
qDebug() << "Buffered event queue size (caching) : " << m_countWithCaching + 1;
qDebug() << "Buffered event queue size (from start) : " << m_countFromStart + 1;
qDebug() << "PropertyNotify[FIRST] at : " << m_indexFirst;
qDebug() << "PropertyNotify[SECOND] at : " << m_indexSecond;
#endif
}
private:
xcb_atom_t m_atomFirst = -1;
xcb_atom_t m_atomSecond = -1;
qint32 m_peekerFirstId = -1;
qint32 m_peekerSecondId = -1;
qint32 m_indexFirst = -1;
qint32 m_indexSecond = -1;
bool m_foundFirstEventAgain = false;
qint32 m_countWithCaching = -1;
qint32 m_countFromStart = -1;
bool m_ignoreSubsequentExpose = false;
bool m_foundSecondBeforeFirst = false;
};
void tst_QX11Info::peeker()
{
int argc = 0;
QGuiApplication app(argc, 0);
PeekerTest test;
test.show();
QVERIFY(QTest::qWaitForWindowExposed(&test));
}
void tst_QX11Info::isCompositingManagerRunning()
{
int argc = 0;
QGuiApplication app(argc, 0);
const bool b = QX11Info::isCompositingManagerRunning();
Q_UNUSED(b);
const bool b2 = QX11Info::isCompositingManagerRunning(0);
Q_UNUSED(b2);
// just check that it didn't crash (QTBUG-91913)
}
QTEST_APPLESS_MAIN(tst_QX11Info)
#include "tst_qx11info.moc"