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Added an example for PyQt5 (#389)

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* added pyqt5 example

* fixed example path on build

* improved pyqt example

* simplified example
This commit is contained in:
willbelr
2020-12-24 08:44:23 -05:00
committed by GitHub
parent 7514ebbe1a
commit 380e812373
11 changed files with 24 additions and 2 deletions
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examples/cpp/RemoteTerm/README.md
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A simple example showing how to use QTermWidget to control and display a remote terminal.
To run this example, you should:
1. Build client-side program. In my PC, I use 'apt-get' to install the QTermWidget library.
2. Start the shell-srv.py with specific paramenters.This will expose a shell via socket.
3. Start the client-side program from commandline with specific paramenters.
Now you will get your own remote terminal work with QTermWidget.
examples/cpp/RemoteTerm/RemoteTerm.pro
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#-------------------------------------------------
#
# Project created by QtCreator 2017-10-31T00:37:59
#
#-------------------------------------------------
QT += core gui network
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = RemoteTerm
TEMPLATE = app
# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
CONFIG += c++11
SOURCES += \
main.cpp \
remoteterm.cpp
HEADERS += \
remoteterm.h
unix:!macx: LIBS += -lqtermwidget5
examples/cpp/RemoteTerm/main.cpp
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#include "remoteterm.h"
#include <QApplication>
#include <QDebug>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
if(a.arguments().size() != 3){
qDebug() << "Example(client-side) for remote terminal of QTermWidget.";
qDebug() << QString("Usage: %1 ipaddr port").arg(a.arguments()[0]);
return 1;
}
QString ipaddr = a.arguments().at(1);
quint16 port = a.arguments().at(2).toUShort();
RemoteTerm w(ipaddr,port);
w.show();
return a.exec();
}
examples/cpp/RemoteTerm/remoteterm.cpp
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#include "remoteterm.h"
#include <QTcpSocket>
#include <QDebug>
#include <unistd.h>
RemoteTerm::RemoteTerm(const QString &ipaddr, quint16 port, QWidget *parent)
: QTermWidget(0,parent)
{
socket = new QTcpSocket(this);
// Write what we input to remote terminal via socket
connect(this, &RemoteTerm::sendData,[this](const char *data, int size){
this->socket->write(data, size);
});
// Read anything from remote terminal via socket and show it on widget.
connect(socket,&QTcpSocket::readyRead,[this](){
QByteArray data = socket->readAll();
write(this->getPtySlaveFd(), data.data(), data.size());
});
connect(socket, SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(atError()));
// Here we start an empty pty.
this->startTerminalTeletype();
socket->connectToHost(ipaddr, port);
}
void RemoteTerm::atError()
{
qDebug() << socket->errorString();
}
examples/cpp/RemoteTerm/remoteterm.h
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#ifndef WIDGET_H
#define WIDGET_H
#include <qtermwidget5/qtermwidget.h>
class QTcpSocket;
class RemoteTerm : public QTermWidget
{
Q_OBJECT
public:
RemoteTerm(const QString &ipaddr, quint16 port, QWidget *parent = 0);
public slots:
void atError();
private:
QTcpSocket *socket;
};
#endif // WIDGET_H
examples/cpp/RemoteTerm/shell-srv.py
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#!/usr/bin/env python
import sys
import os
import socket
import pty
def usage(program):
print "Example(server-side) for remote terminal of QTermWidget."
print "Usage: %s ipaddr port" %program
def main():
if len(sys.argv) != 3:
usage(sys.argv[0])
sys.exit(1)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.bind((sys.argv[1], int(sys.argv[2])))
s.listen(0)
print "[+]Start Server."
except Exception as e:
print "[-]Error Happened: %s" %e.message
sys.exit(2)
while True:
c = s.accept()
os.dup2(c[0].fileno(), 0)
os.dup2(c[0].fileno(), 1)
os.dup2(c[0].fileno(), 2)
# It's important to use pty to spawn the shell.
pty.spawn("/bin/sh")
c[0].close()
if __name__ == "__main__":
main()
examples/cpp/main.cpp
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/* Copyright (C) 2008 e_k (e_k@users.sourceforge.net)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <QApplication>
#include <QtDebug>
#include <QIcon>
#include <QMainWindow>
#include <QMenuBar>
#include "qtermwidget.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QIcon::setThemeName(QStringLiteral("oxygen"));
QMainWindow *mainWindow = new QMainWindow();
QTermWidget *console = new QTermWidget();
QMenuBar *menuBar = new QMenuBar(mainWindow);
QMenu *actionsMenu = new QMenu(QStringLiteral("Actions"), menuBar);
menuBar->addMenu(actionsMenu);
actionsMenu->addAction(QStringLiteral("Find..."), console, &QTermWidget::toggleShowSearchBar,
QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_F));
actionsMenu->addAction(QStringLiteral("Copy"), console, &QTermWidget::copyClipboard,
QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_C));
actionsMenu->addAction(QStringLiteral("Paste"), console, &QTermWidget::pasteClipboard,
QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_V));
actionsMenu->addAction(QStringLiteral("About Qt"), &app, &QApplication::aboutQt);
mainWindow->setMenuBar(menuBar);
QFont font = QApplication::font();
#ifdef Q_OS_MACOS
font.setFamily(QStringLiteral("Monaco"));
#elif defined(Q_WS_QWS)
font.setFamily(QStringLiteral("fixed"));
#else
font.setFamily(QStringLiteral("Monospace"));
#endif
font.setPointSize(12);
console->setTerminalFont(font);
// console->setColorScheme(COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW);
console->setScrollBarPosition(QTermWidget::ScrollBarRight);
const auto arguments = QApplication::arguments();
for (const QString& arg : arguments)
{
if (console->availableColorSchemes().contains(arg))
console->setColorScheme(arg);
if (console->availableKeyBindings().contains(arg))
console->setKeyBindings(arg);
}
mainWindow->setCentralWidget(console);
mainWindow->resize(600, 400);
// info output
qDebug() << "* INFO *************************";
qDebug() << " availableKeyBindings:" << console->availableKeyBindings();
qDebug() << " keyBindings:" << console->keyBindings();
qDebug() << " availableColorSchemes:" << console->availableColorSchemes();
qDebug() << "* INFO END *********************";
// real startup
QObject::connect(console, &QTermWidget::finished, mainWindow, &QMainWindow::close);
mainWindow->show();
return app.exec();
}