kvnc.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

#include <qiconset.h>
#include <qdialog.h>
#include <qpixmap.h>
#include <qdom.h>
#include <qaction.h>
#include <qtopia/qpemenubar.h>
#include <qstatusbar.h>
#include <qpopupmenu.h>
#include <qpushbutton.h>
#include <qtopia/qpetoolbar.h>
#include <qtimer.h>
#include <qmessagebox.h>
#include <qtopia/qpeapplication.h>
#include <qtopia/global.h>
#include <assert.h>

#include "kvnc.h"
#include "krfbcanvas.h"
#include "kvncoptionsdlg.h"
#include "krfbconnection.h"
#include "krfboptions.h"


/* XPM */
static char * menu_xpm[] = {
"12 12 5 1",
" 	c None",
".	c #000000",
"+	c #FFFDAD",
"@	c #FFFF00",
"#	c #E5E100",
"            ",
"            ",
"  ......... ",
"  .+++++++. ",
"  .+@@@@#.  ",
"  .+@@@#.   ",
"  .+@@#.    ",
"  .+@#.     ",
"  .+#.      ",
"  .+.       ",
"  ..        ",
"            "};

const int StatusTextId = 0;

/*!
  \class KVNC
  \brief The KVNC class is a VNC client.

  \legalese
    Keypebble, the VNC client for Qtopia, is based on Keystone from 
    the KDE project. Keystone and Keypebble are distributed
    under the terms of the GNU General Public License. The VNC server
    code in Qt/Embedded is copyright Trolltech.

    A primary copyright holder is Richard Moore &lt;[e-mail]&gt;.

    This software owes a lot to Markus Wuebben's kvncviewer,
    which some of the code is derived from. Thanks also go to ORL for
    making the RFB protocol and servers GPL.
*/

KVNC::KVNC( const char *name ) : QMainWindow( 0, name )
{
    setCaption( tr("VNC Viewer") );
    fullscreen = false;
    isConnected = false;

    canvas = new KRFBCanvas( this, "canvas" ); // No tr
    setCentralWidget( canvas );

    connect( canvas->connection(), SIGNAL(statusChanged(const QString &)),
	    this, SLOT(statusMessage(const QString &)) );
    connect( canvas->connection(), SIGNAL(error(const QString &)),
	    this, SLOT(error(const QString &)) );
    connect( canvas->connection(), SIGNAL(connected()), this, SLOT(connected()) );
    connect( canvas->connection(), SIGNAL(loggedIn()), this, SLOT(loggedIn()) );
    connect( canvas->connection(), SIGNAL(disconnected()), this, SLOT(disconnected()) );

    setupActions();

    cornerButton = new QPushButton( this );
    cornerButton->setPixmap( QPixmap( (const char**)menu_xpm ) );
    connect( cornerButton, SIGNAL(pressed()), this, SLOT(showMenu()) );
    canvas->setCornerWidget( cornerButton );

    QTimer::singleShot( 0, canvas, SLOT(openConnection()) );
}

KVNC::~KVNC()
{

}

void KVNC::openURL( const QUrl &url )
{
    canvas->openURL( url );
}

void KVNC::setupActions()
{
    cornerMenu = new QPopupMenu( this );

    fullScreenAction = new QAction( tr("Full Screen"), QString::null, 0, 0 );
    connect( fullScreenAction, SIGNAL(toggled(bool)), this, SLOT( toggleFullScreen(bool) ) );
    fullScreenAction->setToggleAction( true );
    fullScreenAction->addTo( cornerMenu );
    fullScreenAction->setEnabled( false );

    zoomAction = new QAction( tr("Zoom"), QString::null, 0, 0 );
    connect( zoomAction, SIGNAL(toggled(bool)),
	    this, SLOT( zoom(bool) ) );
    zoomAction->setToggleAction( true );
    zoomAction->addTo( cornerMenu );
    zoomAction->setEnabled( false );

    optionsAction = new QAction( tr("Settings..."), QString::null, 0, 0 );
    connect( optionsAction, SIGNAL(activated()), this, SLOT( showOptions() ) );
    optionsAction->addTo( cornerMenu );

    connectAction = new QAction( tr("Connect..."), QString::null, 0, 0 );
    connect( connectAction, SIGNAL(activated()), this, SLOT(connectToServer()) );
    connectAction->addTo( cornerMenu );
}

void KVNC::toggleFullScreen( bool f )
{
    if ( f ) {
	canvas->setFrameStyle( QFrame::NoFrame );
	canvas->reparent( 0,WStyle_Tool | WStyle_Customize | WStyle_StaysOnTop,
		QPoint(0,0),false);
	canvas->resize(qApp->desktop()->width(), qApp->desktop()->height());
	canvas->raise();
	canvas->setFocus();
	canvas->grabKeyboard();
	canvas->show();
    } else {
	canvas->releaseKeyboard();
	canvas->reparent( this, 0, QPoint(0,0), false );
	canvas->setFrameStyle( QFrame::Panel | QFrame::Sunken );
	setCentralWidget( canvas );
	canvas->show();
    }

    fullscreen = f;
    fullScreenAction->setOn(fullscreen);
}

void KVNC::connectToServer()
{
    if ( isConnected ) {
	if ( fullscreen )
	    toggleFullScreen( false );
	canvas->closeConnection();
    } else {
	canvas->openConnection();
    }
}

void KVNC::zoom( bool z )
{
    if (isConnected) {
	canvas->setViewScale( z ? 2 : 1 );
    }
}

void KVNC::showMenu()
{
    QPoint pt = mapToGlobal(cornerButton->pos());
    QSize s = cornerMenu->sizeHint();
    pt.ry() -= s.height();
    pt.rx() -= s.width();
    cornerMenu->popup( pt );
}

void KVNC::connected()
{
    static QString msg = tr( "Connected to remote host" );
    statusMessage( msg );
    fullScreenAction->setEnabled( true );
    zoomAction->setEnabled( true );
    connectAction->setText( tr("Disconnect") );
    isConnected = true;
}

void KVNC::loggedIn()
{
    static QString msg = tr( "Logged in to remote host" );
    statusMessage( msg );
}

void KVNC::disconnected()
{
    static QString msg = tr( "Connection closed" );
    statusMessage( msg );

    isConnected = false;
    fullScreenAction->setEnabled( false );
    fullScreenAction->setOn( false );
    zoomAction->setEnabled( false );
    zoomAction->setOn( false );
    connectAction->setText( tr("Connect...") );
}

void KVNC::statusMessage( const QString &m )
{
    Global::statusMessage( m );
}

void KVNC::error( const QString &msg )
{
    QMessageBox::warning( this, tr("VNC Viewer"), msg );
}

void KVNC::showOptions()
{
    if ( fullscreen )
	toggleFullScreen( false );
    KVNCOptionsDlg *wdg = new KVNCOptionsDlg( canvas->connection()->options(), this );
    if ( QPEApplication::execDialog(wdg) == QDialog::Accepted ) {
	canvas->connection()->options()->save();
    }
    delete wdg;
}