--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/qvfb/qvfbx11view.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,389 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the tools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qvfbx11view.h"
+#include "x11keyfaker.h"
+#include <qevent.h>
+#include <QX11Info>
+#include <QTimer>
+#include <QProcess>
+#include <QDebug>
+#include <QUuid>
+#include <QDataStream>
+#include <QTemporaryFile>
+#include <X11/Xlib.h>
+
+QT_BEGIN_NAMESPACE
+
+QVFbX11View::QVFbX11View
+ (int id, int w, int h, int d, Rotation r, QWidget *parent)
+ : QVFbAbstractView(parent)
+{
+ this->id = id;
+ this->w = w;
+ this->h = h;
+ this->d = d;
+ this->rotation = r;
+ this->gr = 1.0;
+ this->gg = 1.0;
+ this->gb = 1.0;
+ this->touchscreen = false;
+ this->lcd = false;
+ this->keyFaker = 0;
+ this->xnest = 0;
+ this->serverAuthFile = 0;
+ this->shutdown = false;
+
+ // Try to find Xephyr, as it is better than Xnest in many ways.
+ if (QFile::exists("/usr/bin/Xephyr"))
+ xserver = "/usr/bin/Xephyr";
+ else if (QFile::exists("/usr/local/bin/Xephyr"))
+ xserver = "/usr/local/bin/Xephyr";
+ else if (QFile::exists("/usr/X11R6/bin/Xephyr"))
+ xserver = "/usr/X11R6/bin/Xephyr";
+ else
+ xserver = "Xnest";
+}
+
+QVFbX11View::~QVFbX11View()
+{
+ shutdown = true;
+ if (xnest) {
+ xnest->terminate();
+ xnestStopped();
+ }
+}
+
+int QVFbX11View::displayId() const
+{
+ return id;
+}
+
+int QVFbX11View::displayWidth() const
+{
+ return ( (int)rotation & 0x01 ) ? h : w;
+}
+
+int QVFbX11View::displayHeight() const
+{
+ return ( (int)rotation & 0x01 ) ? w : h;
+}
+
+int QVFbX11View::displayDepth() const
+{
+ return d;
+}
+
+QVFbX11View::Rotation QVFbX11View::displayRotation() const
+{
+ return rotation;
+}
+
+void QVFbX11View::skinKeyPressEvent(int code, const QString&, bool)
+{
+ if (keyFaker)
+ keyFaker->sendKeyEvent(code, true);
+}
+
+void QVFbX11View::skinKeyReleaseEvent(int code, const QString&, bool)
+{
+ if (keyFaker)
+ keyFaker->sendKeyEvent(code, false);
+}
+
+void QVFbX11View::setGamma(double gr, double gg, double gb)
+{
+ // We remember the values, but don't do anything with them.
+ this->gr = gr;
+ this->gg = gg;
+ this->gb = gb;
+}
+
+double QVFbX11View::gammaRed() const
+{
+ return gr;
+}
+
+double QVFbX11View::gammaGreen() const
+{
+ return gg;
+}
+
+double QVFbX11View::gammaBlue() const
+{
+ return gb;
+}
+
+void QVFbX11View::getGamma(int, QRgb& rgb)
+{
+ rgb = qRgb(255, 255, 255);
+}
+
+bool QVFbX11View::touchScreenEmulation() const
+{
+ return touchscreen;
+}
+
+bool QVFbX11View::lcdScreenEmulation() const
+{
+ return lcd;
+}
+
+int QVFbX11View::rate()
+{
+ // We don't support refresh rates, so return a default value.
+ return 30;
+}
+
+bool QVFbX11View::animating() const
+{
+ // We don't support animation.
+ return false;
+}
+
+QImage QVFbX11View::image() const
+{
+ // We don't support image capture.
+ return QImage();
+}
+
+void QVFbX11View::setRate(int)
+{
+ // We don't support rate adjustments.
+}
+
+
+double QVFbX11View::zoomH() const
+{
+ // Zoom is not possible with Xnest.
+ return 1.0;
+}
+
+double QVFbX11View::zoomV() const
+{
+ // Zoom is not possible with Xnest.
+ return 1.0;
+}
+
+QSize QVFbX11View::sizeHint() const
+{
+ return QSize(w, h);
+}
+
+void QVFbX11View::setTouchscreenEmulation( bool flag )
+{
+ touchscreen = flag;
+}
+
+void QVFbX11View::setLcdScreenEmulation( bool flag )
+{
+ lcd = flag;
+}
+
+void QVFbX11View::setZoom( double, double )
+{
+ // Zoom is not possible with Xnest.
+}
+
+void QVFbX11View::setRotation( Rotation )
+{
+ // Rotation is not possible with Xnest.
+}
+
+void QVFbX11View::startAnimation( const QString& )
+{
+ // Animation is not supported.
+}
+
+void QVFbX11View::stopAnimation()
+{
+ // Animation is not supported.
+}
+
+// Generate a 16-byte magic cookie string.
+static QString generateMagicCookie()
+{
+ static const char hexchars[] = "0123456789abcdef";
+ QUuid uuid = QUuid::createUuid();
+ QByteArray ba;
+ QDataStream stream(&ba, QIODevice::WriteOnly);
+ stream << uuid;
+ QString value;
+ foreach ( char ch, ba ) {
+ value += QChar( hexchars[(ch >> 4) & 0x0F] );
+ value += QChar( hexchars[ch & 0x0F] );
+ }
+ return value;
+}
+
+void QVFbX11View::showEvent(QShowEvent *e)
+{
+ if (!xnest)
+ startXnest();
+ QWidget::showEvent(e);
+}
+
+void QVFbX11View::keyPressEvent(QKeyEvent *e)
+{
+ if (keyFaker)
+ keyFaker->sendKeyEvent(e->key(), true);
+ QWidget::keyPressEvent(e);
+}
+
+void QVFbX11View::keyReleaseEvent(QKeyEvent *e)
+{
+ if (keyFaker)
+ keyFaker->sendKeyEvent(e->key(), false);
+ QWidget::keyReleaseEvent(e);
+}
+
+void QVFbX11View::startXnest()
+{
+ // Add authentication credentials to the XAUTHORITY file.
+ QString cookie = generateMagicCookie();
+ QStringList xauthargs;
+ xauthargs += "add";
+ xauthargs += ":" + QString::number(displayId());
+ xauthargs += "MIT-MAGIC-COOKIE-1";
+ xauthargs += cookie;
+ if (QProcess::execute("xauth", xauthargs) != 0)
+ qWarning() << "xauth: failed to add Xnest client authentication credentials";
+
+ // Write the credentials to another authentication file for the server.
+ serverAuthFile = new QTemporaryFile(this);
+ QString authFilename;
+ if (serverAuthFile->open()) {
+ authFilename = serverAuthFile->fileName();
+ serverAuthFile->close();
+ xauthargs.clear();
+ xauthargs += "-f";
+ xauthargs += authFilename;
+ xauthargs += "add";
+ xauthargs += ":" + QString::number(displayId());
+ xauthargs += "MIT-MAGIC-COOKIE-1";
+ xauthargs += cookie;
+ if (QProcess::execute("xauth", xauthargs) != 0)
+ qWarning() << "xauth: failed to add Xnest server authentication credentials";
+ }
+
+ // Create a raw X11 window to act as the Xnest's root window.
+ // We cannot use winId() directly because qvfb is already
+ // selecting for events that Xnest wants to select for.
+ WId root = XCreateSimpleWindow
+ (QX11Info::display(), winId(), 0, 0, w, h, 0,
+ BlackPixel(QX11Info::display(), QX11Info::appScreen()),
+ BlackPixel(QX11Info::display(), QX11Info::appScreen()));
+ XMapWindow(QX11Info::display(), root);
+
+ // Warn the user if the visual number looks wrong. Xnest expects
+ // its root window to be on the default visual.
+ if (QX11Info::appVisual() != DefaultVisual(QX11Info::display(), QX11Info::appScreen())) {
+ qWarning() << "*** Qt is not using the default visual. Xnest may fail "
+ "with a BadMatch error.";
+ qWarning() << "*** If it fails, then restart qvfb with \" -visual"
+ << DefaultVisual(QX11Info::display(), QX11Info::appScreen())
+ ->visualid << "\"";
+ }
+
+ // Make sure the root window is in the X server before Xnest starts.
+ XSync(QX11Info::display(), False);
+
+ // Start the Xnest process.
+ xnest = new QProcess(this);
+ connect(xnest, SIGNAL(error(QProcess::ProcessError)),
+ this, SLOT(xnestStopped()));
+ connect(xnest, SIGNAL(finished(int,QProcess::ExitStatus)),
+ this, SLOT(xnestStopped()));
+ QStringList args;
+ args += "-auth";
+ args += authFilename;
+ if (!xserver.contains("Xephyr")) {
+ args += "-geometry";
+ args += QString::number(w) + "x" + QString::number(h) + "+0+0";
+ args += "-depth";
+ args += QString::number(d);
+ }
+ args += "-br"; // Start Xnest with a black background.
+ args += "-parent";
+ args += "0x" + QString::number(root, 16);
+ args += ":" + QString::number(displayId());
+ xnest->setProcessChannelMode(QProcess::ForwardedChannels);
+ xnest->start(xserver, args);
+ //qDebug() << args;
+
+ QTimer::singleShot(200, this, SLOT(startKeyFaker()));
+}
+
+void QVFbX11View::xnestStopped()
+{
+ if (!shutdown) {
+ if (xnest && xnest->error() == QProcess::FailedToStart)
+ qWarning() << xserver << "could not be started";
+ else
+ qWarning() << xserver << "stopped unexpectedly";
+ }
+ if (keyFaker) {
+ delete keyFaker;
+ keyFaker = 0;
+ }
+ if (xnest) {
+ xnest->deleteLater();
+ xnest = 0;
+
+ QStringList xauthargs;
+ xauthargs += "remove";
+ xauthargs += ":" + QString::number(displayId());
+ if (QProcess::execute("xauth", xauthargs) != 0)
+ qWarning() << "xauth: failed to remove Xnest authentication credentials";
+ }
+ if (serverAuthFile) {
+ delete serverAuthFile;
+ serverAuthFile = 0;
+ }
+}
+
+void QVFbX11View::startKeyFaker()
+{
+ if (!keyFaker && xnest)
+ keyFaker = new X11KeyFaker(":" + QString::number(displayId()), this);
+}
+
+QT_END_NAMESPACE