qmltermwidget/lib/qtermwidget.cpp

/*  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 "qtermwidget.h"

#include "Session.h"
#include "TerminalDisplay.h"

using namespace Konsole;

void * createTermWidget(int startnow, void * parent)
{
    return (void *) new QTermWidget(startnow, (QWidget *)parent);
}

struct TermWidgetImpl {
    TermWidgetImpl(QWidget * parent = 0);

    TerminalDisplay * m_terminalDisplay;
    Session * m_session;

    Session * createSession();
    TerminalDisplay * createTerminalDisplay(Session * session, QWidget * parent);
};

TermWidgetImpl::TermWidgetImpl(QWidget * parent)
{
    this->m_session = createSession();
    this->m_terminalDisplay = createTerminalDisplay(this->m_session, parent);
}


Session * TermWidgetImpl::createSession()
{
    Session * session = new Session();
    QStringList env("");
    env.push_front("TERM=xterm");
    session->setEnvironment(env);
    session->setTitle(Session::NameRole, "QTermWidget");
    session->setProgram("/bin/bash");
    QStringList args("");
    session->setArguments(args);
    session->setAutoClose(true);

    session->setCodec(QTextCodec::codecForName("UTF-8"));

    session->setFlowControlEnabled(true);
    session->setHistoryType(HistoryTypeBuffer(1000));

    session->setDarkBackground(true);

    session->setKeyBindings("");
    return session;
}

TerminalDisplay * TermWidgetImpl::createTerminalDisplay(Session * session, QWidget * parent)
{
//    TerminalDisplay* display = new TerminalDisplay(this);
    TerminalDisplay * display = new TerminalDisplay(parent);

    display->setBellMode(TerminalDisplay::NotifyBell);
    display->setTerminalSizeHint(true);
    display->setTripleClickMode(TerminalDisplay::SelectWholeLine);
    display->setTerminalSizeStartup(true);

    display->setRandomSeed(session->sessionId() * 31);

    return display;
}


QTermWidget::QTermWidget(int startnow, QWidget * parent)
        :QWidget(parent)
{
    m_impl = new TermWidgetImpl(this);

    init();

    if (startnow && m_impl->m_session) {
        m_impl->m_session->run();
    }

    this->setFocus( Qt::OtherFocusReason );
    m_impl->m_terminalDisplay->resize(this->size());

    this->setFocusProxy(m_impl->m_terminalDisplay);
    connect(m_impl->m_terminalDisplay, SIGNAL(copyAvailable(bool)),this, SLOT(selectionChanged(bool)));
}

void QTermWidget::selectionChanged(bool textSelected)
{
    emit copyAvailable(textSelected);
}

int QTermWidget::getShellPID()
{
    return m_impl->m_session->processId();
}

void QTermWidget::changeDir(const QString & dir)
{
    /*
       this is a very hackish way of trying to determine if the shell is in
       the foreground before attempting to change the directory.  It may not
       be portable to anything other than Linux.
    */
    QString strCmd;
    strCmd.setNum(getShellPID());
    strCmd.prepend("ps -j ");
    strCmd.append(" | tail -1 | awk '{ print $5 }' | grep -q \\+");
    int retval = system(strCmd.toStdString().c_str());

    if (!retval) {
        QString cmd = "cd " + dir + "\n";
        sendText(cmd);
    }
}

QSize QTermWidget::sizeHint() const
{
    QSize size = m_impl->m_terminalDisplay->sizeHint();
    size.rheight() = 150;
    return size;
}

void QTermWidget::startShellProgram()
{
    if ( m_impl->m_session->isRunning() ) {
        return;
    }

    m_impl->m_session->run();
}

void QTermWidget::init()
{
    m_impl->m_terminalDisplay->setSize(80, 40);

    QFont font = QApplication::font();
    font.setFamily("Monospace");
    font.setPointSize(10);
    font.setStyleHint(QFont::TypeWriter);
    setTerminalFont(font);
    setScrollBarPosition(NoScrollBar);

    m_impl->m_session->addView(m_impl->m_terminalDisplay);

    connect(m_impl->m_session, SIGNAL(finished()), this, SLOT(sessionFinished()));
}


QTermWidget::~QTermWidget()
{
    emit destroyed();
}


void QTermWidget::setTerminalFont(QFont & font)
{
    if (!m_impl->m_terminalDisplay) {
        return;
    }
    m_impl->m_terminalDisplay->setVTFont(font);
}

void QTermWidget::setShellProgram(const QString & progname)
{
    if (!m_impl->m_session) {
        return;
    }
    m_impl->m_session->setProgram(progname);
}

void QTermWidget::setWorkingDirectory(const QString & dir)
{
    if (!m_impl->m_session) {
        return;
    }
    m_impl->m_session->setInitialWorkingDirectory(dir);
}

void QTermWidget::setArgs(QStringList & args)
{
    if (!m_impl->m_session) {
        return;
    }
    m_impl->m_session->setArguments(args);
}

void QTermWidget::setTextCodec(QTextCodec * codec)
{
    if (!m_impl->m_session) {
        return;
    }
    m_impl->m_session->setCodec(codec);
}

void QTermWidget::setColorScheme(int scheme)
{
    switch (scheme) {
    case COLOR_SCHEME_WHITE_ON_BLACK:
        m_impl->m_terminalDisplay->setColorTable(whiteonblack_color_table);
        break;
    case COLOR_SCHEME_GREEN_ON_BLACK:
        m_impl->m_terminalDisplay->setColorTable(greenonblack_color_table);
        break;
    case COLOR_SCHEME_BLACK_ON_LIGHT_YELLOW:
        m_impl->m_terminalDisplay->setColorTable(blackonlightyellow_color_table);
        break;
    default: //do nothing
        break;
    };
}

void QTermWidget::setSize(int h, int v)
{
    if (!m_impl->m_terminalDisplay) {
        return;
    }
    m_impl->m_terminalDisplay->setSize(h, v);
}

void QTermWidget::setHistorySize(int lines)
{
    if (lines < 0) {
        m_impl->m_session->setHistoryType(HistoryTypeFile());
    } else {
        m_impl->m_session->setHistoryType(HistoryTypeBuffer(lines));
    }
}

void QTermWidget::setScrollBarPosition(ScrollBarPosition pos)
{
    if (!m_impl->m_terminalDisplay) {
        return;
    }
    m_impl->m_terminalDisplay->setScrollBarPosition((TerminalDisplay::ScrollBarPosition)pos);
}

void QTermWidget::sendText(QString & text)
{
    m_impl->m_session->sendText(text);
}

void QTermWidget::resizeEvent(QResizeEvent *)
{
//qDebug("global window resizing...with %d %d", this->size().width(), this->size().height());
    m_impl->m_terminalDisplay->resize(this->size());
}


void QTermWidget::sessionFinished()
{
    emit finished();
}


void QTermWidget::copyClipboard()
{
    m_impl->m_terminalDisplay->copyClipboard();
}

void QTermWidget::pasteClipboard()
{
    m_impl->m_terminalDisplay->pasteClipboard();
}

void QTermWidget::setFlowControlEnabled(bool enabled)
{
    m_impl->m_session->setFlowControlEnabled(enabled);
}

bool QTermWidget::flowControlEnabled(void)
{
    return m_impl->m_session->flowControlEnabled();
}

void QTermWidget::setFlowControlWarningEnabled(bool enabled)
{
    if (flowControlEnabled()) {
        // Do not show warning label if flow control is disabled
        m_impl->m_terminalDisplay->setFlowControlWarningEnabled(enabled);
    }
}

void QTermWidget::setEnvironment(const QStringList & environment)
{
    m_impl->m_session->setEnvironment(environment);
}