Windows-4.7.4/tools/qvfb/qvfbx11view.cpp - platform/external/qt - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2011 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.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** GNU Lesser General Public License Usage
 ** 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.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU General
 ** Public License version 3.0 as published by the Free Software Foundation
 ** and appearing in the file LICENSE.GPL included in the packaging of this
 ** file. Please review the following information to ensure the GNU General
 ** Public License version 3.0 requirements will be met:
 ** http://www.gnu.org/copyleft/gpl.html.
 **
 ** Other Usage
 ** Alternatively, this file may be used in accordance with the terms and
 ** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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
	/****************************************************************************
	**
	** Copyright (C) 2011 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.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** GNU Lesser General Public License Usage
	** 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.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU General
	** Public License version 3.0 as published by the Free Software Foundation
	** and appearing in the file LICENSE.GPL included in the packaging of this
	** file. Please review the following information to ensure the GNU General
	** Public License version 3.0 requirements will be met:
	** http://www.gnu.org/copyleft/gpl.html.
	**
	** Other Usage
	** Alternatively, this file may be used in accordance with the terms and
	** conditions contained in a signed written agreement between you and Nokia.
	**
	**
	**
	**
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#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