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* italc.cpp - main-file for iTALC-Application
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* Copyright (c) 2004-2005 Tobias Doerffel <tobias@doerffel.de>
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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#include <qapplication.h>
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#include <qtranslator.h>
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#include <qtextcodec.h>
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#if QT_VERSION >= 0x030200
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#include <qsplashscreen.h>
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#include <qmessagebox.h>
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#include <qpopupmenu.h>
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#include <qsplitter.h>
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#include <qtoolbutton.h>
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#include <qworkspace.h>
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#include <qdatetime.h>
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#include "client_manager.h"
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#include "about_dialog.h"
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#include "italc_side_bar.h"
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#include "overview_widget.h"
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#include "user_list.h"
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#include "chat_management.h"
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#include "screenshot_list.h"
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#include "config_widget.h"
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#include "help_widget.h"
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#include "system_environment.h"
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#include "italc_rfb_ext.h"
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#include "rfb_connection.h"
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#include "italc_side_bar.moc"
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#if QT_VERSION >= 0x030200
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QSplashScreen * splashScreen = NULL;
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void interrupted( int sig )
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fprintf (stderr, "Got signal %d. Ignoring.\n", sig);
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// good old main-function... initializes qt-app and starts iTALC
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int main (int argc, char * * argv) {
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//signal (SIGBUS, interrupted);
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//signal (SIGSEGV, interrupted);
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//signal (SIGFPE, interrupted);
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QApplication app( argc, argv );
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#if QT_VERSION >= 0x030200
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// set work-directory to
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//QDir::setCurrent( app.applicationDirPath() );
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QPixmap splash = embed::getIconPixmap( "splash" );
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QPixmap actual_splash = QPixmap::grabWindow( QApplication::desktop()->winId(),
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( QApplication::desktop()->availableGeometry().width()-splash.width() ) / 2,
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( QApplication::desktop()->availableGeometry().height()-splash.height() ) / 2,
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splash.width(), splash.height() );
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//bitBlt( &actual_splash, 0, 0, &splash, 0, 0, splash.width(), splash.height(), Qt::XorROP );
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splashScreen = new QSplashScreen( actual_splash );
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splashScreen->setMask( splash.createHeuristicMask() );
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splashScreen->show();
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// ok, let's have a nice fade-in-effect ;-)
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QImage splash_img = splash.convertToImage();
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QImage actual_splash_img = actual_splash.convertToImage();
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QImage dest_img = actual_splash.convertToImage();
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while( t.elapsed() < 2000 && splashScreen->isShown() )
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short int i = 256*t.elapsed()/1500;
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memcpy( dest_img.bits(), actual_splash_img.bits(), actual_splash_img.width()*actual_splash_img.height() * 4 );
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register uchar * rs = splash_img.bits();
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register uchar * gs = rs + 1;
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register uchar * bs = gs + 1;
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register uchar * as = bs + 1;
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register uchar * rd = dest_img.bits();
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register uchar * gd = rd + 1;
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register uchar * bd = gd + 1;
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for( short int y = 0; y < dest_img.height(); ++y )
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for( short int x = 0; x < dest_img.width(); ++x )
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short int opac = static_cast<short int>( (i*(short int)*as)>>8 );
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*rd += ( ( ( *rs - *rd ) * opac ) >> 8 );
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*gd += ( ( ( *gs - *gd ) * opac ) >> 8 );
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*bd += ( ( ( *bs - *bd ) * opac ) >> 8 );
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// conversion is slow as hell if desktop-depth != 24bpp...
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actual_splash.convertFromImage( dest_img );
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splashScreen->setPixmap( actual_splash );
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QString loc = QString( QTextCodec::locale() ).section( '_', 0, 0 );
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// load translation for Qt-widgets/-dialogs
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embed::loadTranslation( QString( "qt_" ) + loc );
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// load actual translation for iTALC
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embed::loadTranslation( loc );
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// read private key, create it if it doesn't exist yet
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rfbConnection::initializeAuthentication();
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// now create the main-window
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italc * italc_main_window = italc::inst();
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#if QT_VERSION >= 0x030200
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// hide splash-screen as soon as main-window is shown
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splashScreen->finish( italc_main_window );
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app.setMainWidget( italc_main_window );
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italc_main_window->show();
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return( app.exec() );
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italc * italc::s_instOfMe = NULL;
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bool italc::ensureConfigPathExists( void )
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QDir home = QDir::home();
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// does a file/dir named ITALC_CONFIG_PATH exist?
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if( home.exists( ITALC_CONFIG_PATH ) == FALSE )
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// no, then create dir
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return( home.mkdir( ITALC_CONFIG_PATH ) );
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// exists, so test, whether it is a file
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else if( home.cd( ITALC_CONFIG_PATH ) == FALSE )
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// it is, so we remove it
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if( home.remove( ITALC_CONFIG_PATH ) == FALSE )
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// remove failed, we give up
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return( home.mkdir( ITALC_CONFIG_PATH ) );
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QMainWindow( 0, "", WDestructiveClose ),
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m_openedTabInSideBar( 1 )
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setCaption( tr( "iTALC" ) + " " + VER_STRING );
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setIcon( embed::getIconPixmap( "splash" ) );
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setUsesBigPixmaps( TRUE );
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QHBox * hbox = new QHBox( this );
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m_sideBar = new italcSideBar( italcSideBar::Vertical, hbox );
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m_sideBar->setStyle( italcSideBar::VSNET/*KDEV3ICON*/ );
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// create splitter, which is used for splitting sidebar-workspaces from main-workspace
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m_splitter = new QSplitter( Qt::Horizontal, hbox );
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#if QT_VERSION >= 0x030200
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m_splitter->setChildrenCollapsible( FALSE );
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// create actual workspace for client-windows
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m_workspace = new QWorkspace( m_splitter );
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m_workspace->setScrollBarsEnabled( TRUE );
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m_workspace->setPaletteBackgroundPixmap( embed::getIconPixmap( "background_artwork" ) );
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// create instance of clientManager -> loads all available classrooms and clients from config-files
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clientManager * cm = clientManager::inst();
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// now create all sidebar-workspaces
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m_overviewWidget = new overviewWidget( m_splitter );
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m_userList = new userList( m_splitter );
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m_chatManagement = new chatManagement( m_splitter );
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m_screenshotList = new screenshotList( m_splitter );
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m_configWidget = new configWidget( m_splitter );
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m_helpWidget = new helpWidget( m_splitter );
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// append sidebar-workspaces to sidebar
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m_sideBar->appendTab( m_overviewWidget, ++id );
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m_sideBar->appendTab( cm, ++id );
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m_sideBar->appendTab( m_userList, ++id );
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m_sideBar->appendTab( m_chatManagement, ++id );
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m_sideBar->appendTab( m_screenshotList, ++id );
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m_sideBar->appendTab( m_configWidget, ++id );
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m_sideBar->appendTab( m_helpWidget, ++id );
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m_sideBar->setPosition( italcSideBar::Left );
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m_sideBar->setTab( m_openedTabInSideBar, TRUE );
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m_splitter->moveToLast( m_workspace );
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setCentralWidget( hbox );
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m_filePopupMenu = new QPopupMenu( this );
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menuBar()->insertItem( tr( "&File" ), m_filePopupMenu );
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m_filePopupMenu->insertItem( embed::getIconPixmap( "exit" ), tr( "&Quit" ), qApp, SLOT( closeAllWindows() ), CTRL+Key_Q );
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// clients-popup-menu
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m_actionsPopupMenu = new QPopupMenu( this );
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menuBar()->insertItem( tr( "&Actions" ), m_actionsPopupMenu );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_start_fullscreen_demo" ), tr( "Start fullscreen-demo" ), cm,
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SLOT( startFullScreenDemo() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_start_demo" ), tr( "Start window-demo" ), cm, SLOT( startDemo() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_stop_demo" ), tr( "Stop demo" ), cm, SLOT( stopDemo() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_msg" ), tr( "Send message to all clients" ), cm,
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SLOT( sendMessage() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "distribute_file" ), tr( "Distribute file" ), cm, SLOT( distributeFile() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "collect_files" ), tr( "Collect files" ), cm, SLOT( collectFiles() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_lock_x" ), tr( "Lock screens" ), cm, SLOT( lockScreens() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_unlock_x" ), tr( "Unlock screens" ), cm, SLOT( unlockScreens() ) );
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//m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_restart_x" ), tr( "Restart X on all clients" ), cm, SLOT( restartX() ) );
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m_actionsPopupMenu->insertSeparator();
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_kill_games" ), tr( "Kill games on all clients" ), cm,
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SLOT( killGames() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_kill_browsers" ), tr( "Kill browsers on all clients" ), cm,
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SLOT( killBrowsers() ) );
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m_actionsPopupMenu->insertSeparator();
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_power_on" ), tr( "Power on all clients" ), cm,
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SLOT( powerOnClients() ) );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client_reboot" ), tr( "Reboot all clients" ), cm,
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SLOT( rebootClients() ) );
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//m_actionsPopupMenu->insertSeparator ();
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m_actionsPopupMenu->insertItem (embed::getIconPixmap( "client_power_off" ), tr( "Power off all clients" ),
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cm, SLOT( powerOffClients() ) );
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m_actionsPopupMenu->insertItem (embed::getIconPixmap( "client_exec_cmds" ), tr( "Execute commands on all clients" ),
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cm, SLOT( execCmds() ) );
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m_actionsPopupMenu->insertSeparator();
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QPopupMenu * single_clients_submenu = new QPopupMenu( m_actionsPopupMenu );
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clientManager::inst()->createActionMenu( single_clients_submenu );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "client" ), tr( "Action on single client" ), single_clients_submenu );
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QPopupMenu * classrooms_submenu = new QPopupMenu( m_actionsPopupMenu );
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clientManager::inst()->createActionMenuForClassRooms( classrooms_submenu );
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m_actionsPopupMenu->insertItem( embed::getIconPixmap( "classroom_opened" ), tr( "Action for whole classroom" ),
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classrooms_submenu );
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m_helpPopupMenu = new QPopupMenu( this );
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menuBar()->insertItem( tr( "&Help" ), m_helpPopupMenu );
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m_helpPopupMenu->insertItem( embed::getIconPixmap( "whatsthis" ), tr( "What's this?" ), this, SLOT( enterWhatsThisMode() ) );
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m_helpPopupMenu->insertSeparator();
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m_helpPopupMenu->insertItem( embed::getIconPixmap( "info" ), tr( "About iTALC" ), this, SLOT( aboutITALC() ) );
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// create the action-toolbar
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m_actionToolBar = new QToolBar( this );
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addDockWindow( m_actionToolBar, tr( "Actions" ), DockTop, TRUE );
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QToolButton * sfd = new QToolButton( embed::getIconPixmap( "client_start_fullscreen_demo" ), tr( "Start fullscreen-demo" ),
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QString::null, cm, SLOT( startFullScreenDemo() ), m_actionToolBar );
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QWhatsThis::add( sfd, tr( "With this button you can start a fullscreen-demo on all visible clients. While a fullscreen-demo is "
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"running, the users neither are able to quit the demo nor can they do something else. This is "
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"good if you want to have the user's full attention." ) );
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QToolButton * swd = new QToolButton( embed::getIconPixmap( "client_start_demo" ), tr( "Start window-demo" ), QString::null, cm,
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SLOT( startDemo() ), m_actionToolBar );
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QWhatsThis::add( swd, tr( "With this button you can start a window-demo on all visible clients. The users are able to minimize or "
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"resize the demo-window, so they can continue with their work. But at any time they can restore the "
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"window, so that they can see, what you're showing to them." ) );
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QToolButton * sd = new QToolButton( embed::getIconPixmap( "client_stop_demo" ), tr( "Stop demo" ), QString::null, cm,
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SLOT( stopDemo() ), m_actionToolBar );
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QWhatsThis::add( sd, tr( "Click on this button if you want to stop the demo. It doesn't matter what kind of demo (fullscreen/window) "
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"you started. Either the screen is unlocked and the users can continue their work or the demo-window "
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"ist just closed." ) );
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QToolButton * sm = new QToolButton( embed::getIconPixmap( "client_msg" ), tr( "Send message to all clients" ), QString::null, cm,
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SLOT( sendMessage() ), m_actionToolBar );
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QWhatsThis::add( sm, tr( "To send a message to all users, you can use this button. After clicking on it, a window opens and you can "
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"enter the text, which should be shown on every client. This is for example useful when giving new "
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"tasks for every user." ) );
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QToolButton * df = new QToolButton( embed::getIconPixmap( "distribute_file" ), tr( "Distribute a file to all clients" ),
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QString::null, cm, SLOT( distributeFile() ), m_actionToolBar );
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QWhatsThis::add( df, tr( "If you want to distribute a file to all clients, you can click on this button. You can select the file "
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"you want to distribute and then this file is copied into every users home-directory." ) );
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QToolButton * cf = new QToolButton( embed::getIconPixmap( "collect_files" ), tr( "Collect files from all clients" ), QString::null,
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cm, SLOT( collectFiles() ), m_actionToolBar );
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QWhatsThis::add( cf, tr( "For collecting a specific file from every user/client click on this button. Then you can enter the "
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"filename (wildcards are possible) and the file is copied from each client if it exists." ) );
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QToolButton * ls = new QToolButton( embed::getIconPixmap( "client_lock_x" ), tr( "Lock screens" ), QString::null, cm,
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SLOT( lockScreens() ), m_actionToolBar);
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QWhatsThis::add( ls, tr( "Often it's neccessary to have the user's full attention. To achieve this, click on this button and the "
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"screen of every client is locked. The users can't do something, because their screens got black "
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"and the computer doesn't react to any inputs (mouse, keyboard...)." ) );
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QToolButton * uls = new QToolButton( embed::getIconPixmap( "client_unlock_x" ), tr( "Unlock screens" ), QString::null, cm,
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SLOT( unlockScreens() ), m_actionToolBar );
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QWhatsThis::add( uls, tr( "To unlock the client's screens, click on this button. Then all users will be able to continue their "
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m_actionToolBar->addSeparator();
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QToolButton * kg = new QToolButton( embed::getIconPixmap( "client_kill_games" ), tr( "Kill games on all clients" ), QString::null,
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cm, SLOT( killGames() ), m_actionToolBar );
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QWhatsThis::add( kg, tr( "Clicking this button will kill all typical Linux/KDE-Games. Especially when teaching young pupils this "
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"is needed very often..." ) );
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QToolButton * kb = new QToolButton( embed::getIconPixmap( "client_kill_browsers" ), tr( "Kill browsers on all clients" ),
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QString::null, cm, SLOT( killBrowsers() ), m_actionToolBar );
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QWhatsThis::add( kb, tr( "Clicking this button will kill all browser-windows. This can be used, if the use of the internet is not "
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"allowed at the moment." ) );
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m_actionToolBar->addSeparator();
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QToolButton * pon = new QToolButton( embed::getIconPixmap( "client_power_on" ), tr( "Power on all clients" ), QString::null, cm,
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SLOT( powerOnClients() ), m_actionToolBar );
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QWhatsThis::add( pon, tr( "Click on this button if you want to power on all clients. For using this feature, the clients must have "
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"Wake-on-LAN-capability. This function is very useful, because you don't have to power on each "
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"computer by hand." ) );
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QToolButton * rac = new QToolButton( embed::getIconPixmap( "client_reboot" ), tr( "Reboot all clients" ), QString::null, cm,
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SLOT( rebootClients() ), m_actionToolBar );
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QWhatsThis::add( rac, tr( "Sometimes it is neccessary to reboot all clients, for example if the configuration has changed. If users "
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"are logged in on the machines to be rebooted, a confirmation will appear for every client." ) );
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QToolButton * poff = new QToolButton( embed::getIconPixmap( "client_power_off" ), tr( "Power off all clients" ), QString::null, cm,
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SLOT( powerOffClients() ), m_actionToolBar );
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QWhatsThis::add( poff, tr( "If you want to power off all clients (for example at the end of a lesson) you can click on this "
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// now create toolbar for view-settings
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m_viewToolBar = new QToolBar( this );
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addDockWindow( m_viewToolBar, tr( "View" ), DockTop, FALSE );
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QToolButton * ocs = new QToolButton( embed::getIconPixmap( "optimize_client_size" ), tr( "Optimize client-size" ), QString::null,
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cm, SLOT( optimizeClientSize() ), m_viewToolBar );
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QWhatsThis::add( ocs, tr( "By clicking this button, the greates possible size for the client-windows is adjusted, so that you "
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"don't have to scroll. Then as much as possible available space is used. The client-windows are "
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QToolButton * ics = new QToolButton( embed::getIconPixmap( "inc_client_size" ), tr( "Increase client-size" ), QString::null, cm,
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SLOT( increaseClientSize() ), m_viewToolBar );
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QWhatsThis::add( ics, tr( "When you click on this button, the size of the visible client-windows is increased, if they have not "
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"already the biggest possible size. The size is limited to protect privacy of the users." ) );
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QToolButton * dcs = new QToolButton( embed::getIconPixmap( "dec_client_size" ), tr( "Decrease client-size" ), QString::null, cm,
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SLOT( decreaseClientSize() ), m_viewToolBar );
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QWhatsThis::add( dcs, tr( "When you click on this button, the size of the visible client-windows is decreased, if they have not "
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"already the smallest possible size." ) );
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m_viewToolBar->addSeparator();
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QToolButton * swr = new QToolButton( embed::getIconPixmap( "classroom_switch" ), tr( "Switch classroom" ), QString::null,
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NULL, NULL, m_viewToolBar );
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swr->setPopup( clientManager::inst()->quickSwitchMenu() );
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swr->setPopupDelay( 1 );
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QWhatsThis::add( swr, tr( "Click on this button, to switch between classrooms." ) );
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QString win_cfg = cm->winCfg();
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QTextStream ts( &win_cfg, IO_ReadOnly );
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// if there's still a demo-server running (for example after iTALC-crash...) quit it...
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systemEnvironment::demoServer::stop();
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// ...and start a new one
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systemEnvironment::demoServer::start();
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QTimer::singleShot( 1000, cm, SLOT( updateClients() ) );
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// start client-update-thread with high priority. otherwise we could loose connections because of timeouts...
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#if QT_VERSION >= 0x030200
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start( QThread::HighPriority );
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void italc::run( void )
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// reload all clients...
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QValueVector<client *> clients = clientManager::inst()->visibleClients();
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// loop through all clients
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for( Q_UINT16 cl = 0; cl < clients.size(); ++cl )
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// reload current client
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clients[cl]->processCmd( client::RELOAD, CONFIRM_NO );
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m_userList->reload();
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if( client::reloadScreenshotList() )
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m_screenshotList->reloadList();
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client::resetReloadOfScreenshotList();
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// now sleep before reloading clients again
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QThread::sleep( clientManager::inst()->updateInterval() );
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// now do cleanup-work
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clientManager::inst()->doCleanupWork();
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void italc::closeEvent( QCloseEvent * _ce )
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// TODO: add check whether screens are locked!
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if( clientManager::inst()->demoRunning() )
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QMessageBox::information( this, tr( "Demo running" ), tr( "You can't exit while a demo is running! Please stop the demo "
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"on all clients and try again!" ), QMessageBox::Ok );
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systemEnvironment::demoServer::stop();
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clientManager::inst()->doCleanupWork();
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void italc::aboutITALC( void )
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aboutDialog( this ).exec();
added
removed
master/italc/src/italc.cpp
