Alessandro Bonazzi
8c43d5cf2f
Files correlati : cg0.exe cg0700a.msk cg0700b.msk cg3.exe cg4.exe Bug : Commento: Merge 1.0 libraries
390 lines
9.9 KiB
C++
390 lines
9.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the tools module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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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 The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/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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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qvfbx11view.h"
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#include "x11keyfaker.h"
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#include <qevent.h>
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#include <QX11Info>
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#include <QTimer>
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#include <QProcess>
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#include <QDebug>
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#include <QUuid>
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#include <QDataStream>
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#include <QTemporaryFile>
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#include <X11/Xlib.h>
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QT_BEGIN_NAMESPACE
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QVFbX11View::QVFbX11View
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(int id, int w, int h, int d, Rotation r, QWidget *parent)
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: QVFbAbstractView(parent)
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{
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this->id = id;
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this->w = w;
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this->h = h;
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this->d = d;
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this->rotation = r;
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this->gr = 1.0;
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this->gg = 1.0;
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this->gb = 1.0;
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this->touchscreen = false;
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this->lcd = false;
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this->keyFaker = 0;
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this->xnest = 0;
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this->serverAuthFile = 0;
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this->shutdown = false;
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// Try to find Xephyr, as it is better than Xnest in many ways.
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if (QFile::exists("/usr/bin/Xephyr"))
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xserver = "/usr/bin/Xephyr";
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else if (QFile::exists("/usr/local/bin/Xephyr"))
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xserver = "/usr/local/bin/Xephyr";
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else if (QFile::exists("/usr/X11R6/bin/Xephyr"))
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xserver = "/usr/X11R6/bin/Xephyr";
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else
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xserver = "Xnest";
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}
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QVFbX11View::~QVFbX11View()
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{
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shutdown = true;
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if (xnest) {
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xnest->terminate();
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xnestStopped();
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}
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}
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int QVFbX11View::displayId() const
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{
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return id;
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}
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int QVFbX11View::displayWidth() const
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{
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return ( (int)rotation & 0x01 ) ? h : w;
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}
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int QVFbX11View::displayHeight() const
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{
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return ( (int)rotation & 0x01 ) ? w : h;
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}
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int QVFbX11View::displayDepth() const
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{
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return d;
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}
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QVFbX11View::Rotation QVFbX11View::displayRotation() const
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{
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return rotation;
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}
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void QVFbX11View::skinKeyPressEvent(int code, const QString&, bool)
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{
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if (keyFaker)
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keyFaker->sendKeyEvent(code, true);
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}
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void QVFbX11View::skinKeyReleaseEvent(int code, const QString&, bool)
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{
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if (keyFaker)
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keyFaker->sendKeyEvent(code, false);
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}
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void QVFbX11View::setGamma(double gr, double gg, double gb)
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{
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// We remember the values, but don't do anything with them.
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this->gr = gr;
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this->gg = gg;
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this->gb = gb;
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}
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double QVFbX11View::gammaRed() const
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{
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return gr;
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}
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double QVFbX11View::gammaGreen() const
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{
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return gg;
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}
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double QVFbX11View::gammaBlue() const
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{
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return gb;
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}
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void QVFbX11View::getGamma(int, QRgb& rgb)
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{
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rgb = qRgb(255, 255, 255);
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}
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bool QVFbX11View::touchScreenEmulation() const
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{
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return touchscreen;
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}
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bool QVFbX11View::lcdScreenEmulation() const
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{
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return lcd;
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}
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int QVFbX11View::rate()
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{
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// We don't support refresh rates, so return a default value.
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return 30;
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}
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bool QVFbX11View::animating() const
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{
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// We don't support animation.
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return false;
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}
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QImage QVFbX11View::image() const
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{
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// We don't support image capture.
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return QImage();
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}
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void QVFbX11View::setRate(int)
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{
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// We don't support rate adjustments.
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}
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double QVFbX11View::zoomH() const
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{
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// Zoom is not possible with Xnest.
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return 1.0;
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}
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double QVFbX11View::zoomV() const
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{
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// Zoom is not possible with Xnest.
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return 1.0;
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}
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QSize QVFbX11View::sizeHint() const
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{
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return QSize(w, h);
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}
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void QVFbX11View::setTouchscreenEmulation( bool flag )
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{
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touchscreen = flag;
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}
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void QVFbX11View::setLcdScreenEmulation( bool flag )
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{
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lcd = flag;
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}
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void QVFbX11View::setZoom( double, double )
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{
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// Zoom is not possible with Xnest.
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}
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void QVFbX11View::setRotation( Rotation )
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{
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// Rotation is not possible with Xnest.
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}
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void QVFbX11View::startAnimation( const QString& )
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{
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// Animation is not supported.
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}
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void QVFbX11View::stopAnimation()
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{
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// Animation is not supported.
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}
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// Generate a 16-byte magic cookie string.
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static QString generateMagicCookie()
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{
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static const char hexchars[] = "0123456789abcdef";
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QUuid uuid = QUuid::createUuid();
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QByteArray ba;
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QDataStream stream(&ba, QIODevice::WriteOnly);
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stream << uuid;
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QString value;
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foreach ( char ch, ba ) {
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value += QChar( hexchars[(ch >> 4) & 0x0F] );
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value += QChar( hexchars[ch & 0x0F] );
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}
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return value;
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}
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void QVFbX11View::showEvent(QShowEvent *e)
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{
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if (!xnest)
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startXnest();
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QWidget::showEvent(e);
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}
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void QVFbX11View::keyPressEvent(QKeyEvent *e)
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{
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if (keyFaker)
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keyFaker->sendKeyEvent(e->key(), true);
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QWidget::keyPressEvent(e);
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}
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void QVFbX11View::keyReleaseEvent(QKeyEvent *e)
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{
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if (keyFaker)
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keyFaker->sendKeyEvent(e->key(), false);
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QWidget::keyReleaseEvent(e);
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}
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void QVFbX11View::startXnest()
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{
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// Add authentication credentials to the XAUTHORITY file.
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QString cookie = generateMagicCookie();
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QStringList xauthargs;
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xauthargs += "add";
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xauthargs += ":" + QString::number(displayId());
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xauthargs += "MIT-MAGIC-COOKIE-1";
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xauthargs += cookie;
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if (QProcess::execute("xauth", xauthargs) != 0)
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qWarning() << "xauth: failed to add Xnest client authentication credentials";
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// Write the credentials to another authentication file for the server.
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serverAuthFile = new QTemporaryFile(this);
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QString authFilename;
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if (serverAuthFile->open()) {
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authFilename = serverAuthFile->fileName();
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serverAuthFile->close();
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xauthargs.clear();
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xauthargs += "-f";
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xauthargs += authFilename;
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xauthargs += "add";
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xauthargs += ":" + QString::number(displayId());
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xauthargs += "MIT-MAGIC-COOKIE-1";
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xauthargs += cookie;
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if (QProcess::execute("xauth", xauthargs) != 0)
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qWarning() << "xauth: failed to add Xnest server authentication credentials";
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}
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// Create a raw X11 window to act as the Xnest's root window.
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// We cannot use winId() directly because qvfb is already
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// selecting for events that Xnest wants to select for.
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WId root = XCreateSimpleWindow
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(QX11Info::display(), winId(), 0, 0, w, h, 0,
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BlackPixel(QX11Info::display(), QX11Info::appScreen()),
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BlackPixel(QX11Info::display(), QX11Info::appScreen()));
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XMapWindow(QX11Info::display(), root);
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// Warn the user if the visual number looks wrong. Xnest expects
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// its root window to be on the default visual.
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if (QX11Info::appVisual() != DefaultVisual(QX11Info::display(), QX11Info::appScreen())) {
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qWarning() << "*** Qt is not using the default visual. Xnest may fail "
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"with a BadMatch error.";
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qWarning() << "*** If it fails, then restart qvfb with \" -visual"
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<< DefaultVisual(QX11Info::display(), QX11Info::appScreen())
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->visualid << "\"";
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}
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// Make sure the root window is in the X server before Xnest starts.
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XSync(QX11Info::display(), False);
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// Start the Xnest process.
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xnest = new QProcess(this);
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connect(xnest, SIGNAL(error(QProcess::ProcessError)),
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this, SLOT(xnestStopped()));
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connect(xnest, SIGNAL(finished(int,QProcess::ExitStatus)),
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this, SLOT(xnestStopped()));
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QStringList args;
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args += "-auth";
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args += authFilename;
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if (!xserver.contains("Xephyr")) {
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args += "-geometry";
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args += QString::number(w) + "x" + QString::number(h) + "+0+0";
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args += "-depth";
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args += QString::number(d);
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}
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args += "-br"; // Start Xnest with a black background.
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args += "-parent";
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args += "0x" + QString::number(root, 16);
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args += ":" + QString::number(displayId());
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xnest->setProcessChannelMode(QProcess::ForwardedChannels);
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xnest->start(xserver, args);
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//qDebug() << args;
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QTimer::singleShot(200, this, SLOT(startKeyFaker()));
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}
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void QVFbX11View::xnestStopped()
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{
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if (!shutdown) {
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if (xnest && xnest->error() == QProcess::FailedToStart)
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qWarning() << xserver << "could not be started";
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else
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qWarning() << xserver << "stopped unexpectedly";
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}
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if (keyFaker) {
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delete keyFaker;
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keyFaker = 0;
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}
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if (xnest) {
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xnest->deleteLater();
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xnest = 0;
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QStringList xauthargs;
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xauthargs += "remove";
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xauthargs += ":" + QString::number(displayId());
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if (QProcess::execute("xauth", xauthargs) != 0)
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qWarning() << "xauth: failed to remove Xnest authentication credentials";
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}
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if (serverAuthFile) {
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delete serverAuthFile;
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serverAuthFile = 0;
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}
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}
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void QVFbX11View::startKeyFaker()
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{
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if (!keyFaker && xnest)
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keyFaker = new X11KeyFaker(":" + QString::number(displayId()), this);
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}
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QT_END_NAMESPACE
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