524 lines
17 KiB
C++
524 lines
17 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the plugins of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qxcbintegration.h"
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#include "qxcbconnection.h"
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#include "qxcbscreen.h"
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#include "qxcbwindow.h"
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#include "qxcbcursor.h"
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#include "qxcbkeyboard.h"
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#include "qxcbbackingstore.h"
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#include "qxcbnativeinterface.h"
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#include "qxcbclipboard.h"
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#include "qxcbdrag.h"
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#ifndef QT_NO_SESSIONMANAGER
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#include "qxcbsessionmanager.h"
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#endif
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#include <xcb/xcb.h>
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#include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
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#include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
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#include <QtPlatformSupport/private/qgenericunixservices_p.h>
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#include <stdio.h>
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//this has to be included before egl, since egl pulls in X headers
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#include <QtGui/private/qguiapplication_p.h>
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#ifdef XCB_USE_EGL
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#include <EGL/egl.h>
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#endif
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#ifdef XCB_USE_XLIB
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#include <X11/Xlib.h>
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#endif
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#include <qpa/qplatforminputcontextfactory_p.h>
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#include <private/qgenericunixthemes_p.h>
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#include <qpa/qplatforminputcontext.h>
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#if defined(XCB_USE_GLX)
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#include "qglxintegration.h"
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#elif defined(XCB_USE_EGL)
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#include "qxcbeglsurface.h"
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#include <QtPlatformSupport/private/qeglplatformcontext_p.h>
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#include <QtPlatformSupport/private/qeglpbuffer_p.h>
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#include <QtPlatformHeaders/QEGLNativeContext>
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#endif
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#include <QtGui/QOpenGLContext>
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#include <QtGui/QScreen>
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#include <QtGui/QOffscreenSurface>
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#ifndef QT_NO_ACCESSIBILITY
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#include <qpa/qplatformaccessibility.h>
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#ifndef QT_NO_ACCESSIBILITY_ATSPI_BRIDGE
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#include "../../../platformsupport/linuxaccessibility/bridge_p.h"
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#endif
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#endif
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#include <QtCore/QFileInfo>
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QT_BEGIN_NAMESPACE
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// Find out if our parent process is gdb by looking at the 'exe' symlink under /proc,.
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// or, for older Linuxes, read out 'cmdline'.
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static bool runningUnderDebugger()
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{
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#if defined(QT_DEBUG) && defined(Q_OS_LINUX)
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const QString parentProc = QLatin1String("/proc/") + QString::number(getppid());
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const QFileInfo parentProcExe(parentProc + QLatin1String("/exe"));
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if (parentProcExe.isSymLink())
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return parentProcExe.symLinkTarget().endsWith(QLatin1String("/gdb"));
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QFile f(parentProc + QLatin1String("/cmdline"));
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if (!f.open(QIODevice::ReadOnly))
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return false;
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QByteArray s;
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char c;
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while (f.getChar(&c) && c) {
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if (c == '/')
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s.clear();
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else
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s += c;
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}
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return s == "gdb";
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#else
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return false;
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#endif
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}
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QXcbIntegration::QXcbIntegration(const QStringList ¶meters, int &argc, char **argv)
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: m_services(new QGenericUnixServices)
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, m_instanceName(0)
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, m_canGrab(true)
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{
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qRegisterMetaType<QXcbWindow*>();
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#ifdef XCB_USE_XLIB
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XInitThreads();
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#endif
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m_nativeInterface.reset(new QXcbNativeInterface);
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// Parse arguments
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const char *displayName = 0;
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bool noGrabArg = false;
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bool doGrabArg = false;
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if (argc) {
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int j = 1;
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for (int i = 1; i < argc; i++) {
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QByteArray arg(argv[i]);
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if (arg.startsWith("--"))
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arg.remove(0, 1);
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if (arg == "-display" && i < argc - 1)
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displayName = argv[++i];
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else if (arg == "-name" && i < argc - 1)
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m_instanceName = argv[++i];
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else if (arg == "-nograb")
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noGrabArg = true;
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else if (arg == "-dograb")
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doGrabArg = true;
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else
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argv[j++] = argv[i];
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}
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argc = j;
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} // argc
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bool underDebugger = runningUnderDebugger();
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if (noGrabArg && doGrabArg && underDebugger) {
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qWarning() << "Both -nograb and -dograb command line arguments specified. Please pick one. -nograb takes prcedence";
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doGrabArg = false;
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}
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#if defined(QT_DEBUG)
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if (!noGrabArg && !doGrabArg && underDebugger) {
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qDebug("Qt: gdb: -nograb added to command-line options.\n"
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"\t Use the -dograb option to enforce grabbing.");
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}
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#endif
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m_canGrab = (!underDebugger && noGrabArg) || (underDebugger && doGrabArg);
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static bool canNotGrabEnv = qEnvironmentVariableIsSet("QT_XCB_NO_GRAB_SERVER");
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if (canNotGrabEnv)
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m_canGrab = false;
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m_connections << new QXcbConnection(m_nativeInterface.data(), m_canGrab, displayName);
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for (int i = 0; i < parameters.size() - 1; i += 2) {
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#ifdef Q_XCB_DEBUG
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qDebug() << "QXcbIntegration: Connecting to additional display: " << parameters.at(i) << parameters.at(i+1);
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#endif
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QString display = parameters.at(i) + QLatin1Char(':') + parameters.at(i+1);
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m_connections << new QXcbConnection(m_nativeInterface.data(), display.toLatin1().constData());
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}
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m_fontDatabase.reset(new QGenericUnixFontDatabase());
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}
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QXcbIntegration::~QXcbIntegration()
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{
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qDeleteAll(m_connections);
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}
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QPlatformWindow *QXcbIntegration::createPlatformWindow(QWindow *window) const
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{
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return new QXcbWindow(window);
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}
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#if defined(XCB_USE_EGL)
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class QEGLXcbPlatformContext : public QEGLPlatformContext
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{
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public:
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QEGLXcbPlatformContext(const QSurfaceFormat &glFormat, QPlatformOpenGLContext *share,
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EGLDisplay display, QXcbConnection *c, const QVariant &nativeHandle)
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: QEGLPlatformContext(glFormat, share, display, 0, nativeHandle)
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, m_connection(c)
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{
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Q_XCB_NOOP(m_connection);
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}
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void swapBuffers(QPlatformSurface *surface)
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{
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Q_XCB_NOOP(m_connection);
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QEGLPlatformContext::swapBuffers(surface);
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Q_XCB_NOOP(m_connection);
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}
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bool makeCurrent(QPlatformSurface *surface)
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{
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Q_XCB_NOOP(m_connection);
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bool ret = QEGLPlatformContext::makeCurrent(surface);
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Q_XCB_NOOP(m_connection);
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return ret;
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}
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void doneCurrent()
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{
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Q_XCB_NOOP(m_connection);
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QEGLPlatformContext::doneCurrent();
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Q_XCB_NOOP(m_connection);
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}
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EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface)
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{
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if (surface->surface()->surfaceClass() == QSurface::Window)
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return static_cast<QXcbWindow *>(surface)->eglSurface()->surface();
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else
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return static_cast<QEGLPbuffer *>(surface)->pbuffer();
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}
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QVariant nativeHandle() const {
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return QVariant::fromValue<QEGLNativeContext>(QEGLNativeContext(eglContext(), eglDisplay()));
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}
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private:
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QXcbConnection *m_connection;
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};
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#endif
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#ifndef QT_NO_OPENGL
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QPlatformOpenGLContext *QXcbIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
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{
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QXcbScreen *screen = static_cast<QXcbScreen *>(context->screen()->handle());
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#if defined(XCB_USE_GLX)
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QGLXContext *platformContext = new QGLXContext(screen, context->format(),
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context->shareHandle(), context->nativeHandle());
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context->setNativeHandle(platformContext->nativeHandle());
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return platformContext;
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#elif defined(XCB_USE_EGL)
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QEGLXcbPlatformContext *platformContext = new QEGLXcbPlatformContext(context->format(),
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context->shareHandle(),
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screen->connection()->egl_display(),
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screen->connection(),
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context->nativeHandle());
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context->setNativeHandle(platformContext->nativeHandle());
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return platformContext;
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#else
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Q_UNUSED(screen);
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qWarning("QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled");
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return 0;
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#endif
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}
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#endif
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QPlatformBackingStore *QXcbIntegration::createPlatformBackingStore(QWindow *window) const
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{
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return new QXcbBackingStore(window);
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}
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QPlatformOffscreenSurface *QXcbIntegration::createPlatformOffscreenSurface(QOffscreenSurface *surface) const
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{
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#if defined(XCB_USE_GLX)
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static bool vendorChecked = false;
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static bool glxPbufferUsable = true;
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if (!vendorChecked) {
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vendorChecked = true;
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const char *glxvendor = glXGetClientString(glXGetCurrentDisplay(), GLX_VENDOR);
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if (glxvendor && !strcmp(glxvendor, "ATI"))
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glxPbufferUsable = false;
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}
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if (glxPbufferUsable)
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return new QGLXPbuffer(surface);
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else
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return 0; // trigger fallback to hidden QWindow
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#elif defined(XCB_USE_EGL)
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QXcbScreen *screen = static_cast<QXcbScreen *>(surface->screen()->handle());
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return new QEGLPbuffer(screen->connection()->egl_display(), surface->requestedFormat(), surface);
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#else
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Q_UNUSED(surface);
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qWarning("QXcbIntegration: Cannot create platform offscreen surface, neither GLX nor EGL are enabled");
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return 0;
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#endif
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}
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bool QXcbIntegration::hasCapability(QPlatformIntegration::Capability cap) const
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{
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switch (cap) {
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case ThreadedPixmaps: return true;
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#if defined(XCB_USE_GLX)
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case OpenGL: return m_connections.at(0)->hasGLX();
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#elif defined(XCB_USE_EGL)
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case OpenGL: return true;
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#else
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case OpenGL: return false;
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#endif
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#if defined(XCB_USE_GLX)
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case ThreadedOpenGL: return m_connections.at(0)->supportsThreadedRendering() && QGLXContext::supportsThreading();
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#else
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case ThreadedOpenGL: return m_connections.at(0)->supportsThreadedRendering();
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#endif
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case WindowMasks: return true;
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case MultipleWindows: return true;
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case ForeignWindows: return true;
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case SyncState: return true;
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case RasterGLSurface: return true;
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default: return QPlatformIntegration::hasCapability(cap);
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}
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}
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QAbstractEventDispatcher *QXcbIntegration::createEventDispatcher() const
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{
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QAbstractEventDispatcher *dispatcher = createUnixEventDispatcher();
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for (int i = 0; i < m_connections.size(); i++)
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m_connections[i]->eventReader()->registerEventDispatcher(dispatcher);
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return dispatcher;
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}
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void QXcbIntegration::initialize()
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{
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// Perform everything that may potentially need the event dispatcher (timers, socket
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// notifiers) here instead of the constructor.
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m_inputContext.reset(QPlatformInputContextFactory::create());
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}
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void QXcbIntegration::moveToScreen(QWindow *window, int screen)
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{
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Q_UNUSED(window);
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Q_UNUSED(screen);
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}
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QPlatformFontDatabase *QXcbIntegration::fontDatabase() const
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{
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return m_fontDatabase.data();
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}
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QPlatformNativeInterface * QXcbIntegration::nativeInterface() const
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{
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return m_nativeInterface.data();
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}
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#ifndef QT_NO_CLIPBOARD
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QPlatformClipboard *QXcbIntegration::clipboard() const
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{
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return m_connections.at(0)->clipboard();
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}
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#endif
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#ifndef QT_NO_DRAGANDDROP
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QPlatformDrag *QXcbIntegration::drag() const
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{
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return m_connections.at(0)->drag();
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}
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#endif
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QPlatformInputContext *QXcbIntegration::inputContext() const
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{
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return m_inputContext.data();
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}
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#ifndef QT_NO_ACCESSIBILITY
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QPlatformAccessibility *QXcbIntegration::accessibility() const
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{
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#if !defined(QT_NO_ACCESSIBILITY_ATSPI_BRIDGE)
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if (!m_accessibility) {
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Q_ASSERT_X(QCoreApplication::eventDispatcher(), "QXcbIntegration",
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"Initializing accessibility without event-dispatcher!");
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m_accessibility.reset(new QSpiAccessibleBridge());
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}
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#endif
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return m_accessibility.data();
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}
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#endif
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QPlatformServices *QXcbIntegration::services() const
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{
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return m_services.data();
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}
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Qt::KeyboardModifiers QXcbIntegration::queryKeyboardModifiers() const
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{
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int keybMask = 0;
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QXcbConnection *conn = m_connections.at(0);
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QXcbCursor::queryPointer(conn, 0, 0, &keybMask);
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return conn->keyboard()->translateModifiers(keybMask);
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}
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QList<int> QXcbIntegration::possibleKeys(const QKeyEvent *e) const
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{
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return m_connections.at(0)->keyboard()->possibleKeys(e);
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}
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QStringList QXcbIntegration::themeNames() const
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{
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return QGenericUnixTheme::themeNames();
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}
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QPlatformTheme *QXcbIntegration::createPlatformTheme(const QString &name) const
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{
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return QGenericUnixTheme::createUnixTheme(name);
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}
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QVariant QXcbIntegration::styleHint(QPlatformIntegration::StyleHint hint) const
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{
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switch (hint) {
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case QPlatformIntegration::CursorFlashTime:
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case QPlatformIntegration::KeyboardInputInterval:
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case QPlatformIntegration::MouseDoubleClickInterval:
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case QPlatformIntegration::StartDragTime:
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case QPlatformIntegration::KeyboardAutoRepeatRate:
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case QPlatformIntegration::PasswordMaskDelay:
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case QPlatformIntegration::StartDragVelocity:
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case QPlatformIntegration::UseRtlExtensions:
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case QPlatformIntegration::PasswordMaskCharacter:
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// TODO using various xcb, gnome or KDE settings
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break; // Not implemented, use defaults
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case QPlatformIntegration::FontSmoothingGamma:
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// Match Qt 4.8 text rendering, and rendering of other X11 toolkits.
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return qreal(1.0);
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case QPlatformIntegration::StartDragDistance: {
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// The default (in QPlatformTheme::defaultThemeHint) is 10 pixels, but
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// on a high-resolution screen it makes sense to increase it.
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qreal dpi = 100.0;
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if (const QXcbScreen *screen = defaultConnection()->primaryScreen()) {
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if (screen->logicalDpi().first > dpi)
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dpi = screen->logicalDpi().first;
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if (screen->logicalDpi().second > dpi)
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dpi = screen->logicalDpi().second;
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}
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return 10.0 * dpi / 100.0;
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}
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case QPlatformIntegration::ShowIsFullScreen:
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// X11 always has support for windows, but the
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// window manager could prevent it (e.g. matchbox)
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return false;
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case QPlatformIntegration::SynthesizeMouseFromTouchEvents:
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// We do not want Qt to synthesize mouse events if X11 already does it.
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return m_connections.at(0)->hasTouchWithoutMouseEmulation();
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default:
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break;
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}
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return QPlatformIntegration::styleHint(hint);
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}
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static QString argv0BaseName()
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{
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QString result;
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const QStringList arguments = QCoreApplication::arguments();
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if (!arguments.isEmpty() && !arguments.front().isEmpty()) {
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result = arguments.front();
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const int lastSlashPos = result.lastIndexOf(QLatin1Char('/'));
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if (lastSlashPos != -1)
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result.remove(0, lastSlashPos + 1);
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}
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return result;
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}
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static const char resourceNameVar[] = "RESOURCE_NAME";
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QByteArray QXcbIntegration::wmClass() const
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{
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if (m_wmClass.isEmpty()) {
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// Instance name according to ICCCM 4.1.2.5
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QString name;
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if (m_instanceName)
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name = QString::fromLocal8Bit(m_instanceName);
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if (name.isEmpty() && qEnvironmentVariableIsSet(resourceNameVar))
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name = QString::fromLocal8Bit(qgetenv(resourceNameVar));
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if (name.isEmpty())
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name = argv0BaseName();
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// Note: QCoreApplication::applicationName() cannot be called from the QGuiApplication constructor,
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// hence this delayed initialization.
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QString className = QCoreApplication::applicationName();
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if (className.isEmpty()) {
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className = argv0BaseName();
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if (!className.isEmpty() && className.at(0).isLower())
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className[0] = className.at(0).toUpper();
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}
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if (!name.isEmpty() && !className.isEmpty()) {
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m_wmClass = name.toLocal8Bit();
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m_wmClass.append('\0');
|
|
m_wmClass.append(className.toLocal8Bit());
|
|
m_wmClass.append('\0');
|
|
}
|
|
}
|
|
return m_wmClass;
|
|
}
|
|
|
|
#if !defined(QT_NO_SESSIONMANAGER) && defined(XCB_USE_SM)
|
|
QPlatformSessionManager *QXcbIntegration::createPlatformSessionManager(const QString &id, const QString &key) const
|
|
{
|
|
return new QXcbSessionManager(id, key);
|
|
}
|
|
#endif
|
|
|
|
void QXcbIntegration::sync()
|
|
{
|
|
for (int i = 0; i < m_connections.size(); i++) {
|
|
m_connections.at(i)->sync();
|
|
}
|
|
}
|
|
|
|
QT_END_NAMESPACE
|