/Go4GUI/helpwindow.cpp Source File

00001 //---------------------------------------------------------------
00002 //        Go4 Release Package v2.10-5 (build 21005) 
00003 //                      03-Nov-2005
00004 //---------------------------------------------------------------
00005 //       The GSI Online Offline Object Oriented (Go4) Project
00006 //       Experiment Data Processing at DVEE department, GSI
00007 //---------------------------------------------------------------
00008 //
00009 //Copyright (C) 2000- Gesellschaft f. Schwerionenforschung, GSI
00010 //                    Planckstr. 1, 64291 Darmstadt, Germany
00011 //Contact:            http://go4.gsi.de
00012 //----------------------------------------------------------------
00013 //This software can be used under the license agreements as stated
00014 //in Go4License.txt file which is part of the distribution.
00015 //----------------------------------------------------------------
00016 #include "helpwindow.h"
00017 #include "qstatusbar.h"
00018 #include "qpixmap.h"
00019 #include "qpopupmenu.h"
00020 #include "qmenubar.h"
00021 #include "qtoolbar.h"
00022 #include "qtoolbutton.h"
00023 #include "qiconset.h"
00024 #include "qfile.h"
00025 #include "qtextstream.h"
00026 #include "qstylesheet.h"
00027 #include "qmessagebox.h"
00028 #include "qfiledialog.h"
00029 #include "qapplication.h"
00030 #include "qcombobox.h"
00031 #include "qevent.h"
00032 #include "qlineedit.h"
00033 #include "qobjectlist.h"
00034 #include "qfileinfo.h"
00035 #include "qfile.h"
00036 #include "qdatastream.h"
00037 #include "qprinter.h"
00038 #include "qsimplerichtext.h"
00039 #include "qpainter.h"
00040 #include "qpaintdevicemetrics.h"
00041 #include "TSystem.h"
00042 #include "ctype.h"
00043 
00044 TGo4HelpWindow::TGo4HelpWindow( const QString& home_, const QString& _path,
00045          QWidget* parent, const char *name )
00046     : QMainWindow( parent, name, WDestructiveClose ),
00047       pathCombo( 0 ), selectedURL()
00048 {
00049     readHistory();
00050     readBookmarks();
00051 
00052     browser = new QTextBrowser( this );
00053 
00054     browser->mimeSourceFactory()->setFilePath( _path );
00055     browser->setFrameStyle( QFrame::Panel | QFrame::Sunken );
00056     connect( browser, SIGNAL( textChanged() ),
00057         this, SLOT( textChanged() ) );
00058 
00059     setCentralWidget( browser );
00060 
00061     if ( !home_.isEmpty() )
00062    browser->setSource( home_ );
00063 
00064     connect( browser, SIGNAL( highlighted( const QString&) ),
00065         statusBar(), SLOT( message( const QString&)) );
00066 
00067     resize( 640,700 );
00068 
00069    QString fxPath=gSystem->Getenv("GO4SYS");
00070    fxPath.append("/Go4GUI/images/");
00071    QString pic1=fxPath;
00072    pic1.append("back.xpm");
00073 
00074    QString pic2=fxPath;
00075    pic2.append("forward.xpm");
00076 
00077    QString pic3=fxPath;
00078    pic3.append("home.xpm");
00079 
00080     QPopupMenu* file = new QPopupMenu( this );
00081     file->insertItem( tr("&New Window"), this, SLOT( newWindow() ), CTRL+Key_N );
00082     file->insertItem( tr("&Open File"), this, SLOT( openFile() ), CTRL+Key_O );
00083     file->insertItem( tr("&Print"), this, SLOT( print() ), CTRL+Key_P );
00084     file->insertSeparator();
00085     file->insertItem( tr("&Close"), this, SLOT( close() ), CTRL+Key_Q );
00086     file->insertItem( tr("E&xit"), qApp, SLOT( closeAllWindows() ), CTRL+Key_X );
00087 
00088     // The same three icons are used twice each.
00089     QIconSet icon_back( QPixmap(pic1.data()) );
00090     QIconSet icon_forward( QPixmap(pic2.data()) );
00091     QIconSet icon_home( QPixmap(pic3.data()));
00092 
00093     QPopupMenu* go = new QPopupMenu( this );
00094     backwardId = go->insertItem( icon_back,
00095              tr("&Backward"), browser, SLOT( backward() ),
00096              CTRL+Key_Left );
00097     forwardId = go->insertItem( icon_forward,
00098             tr("&Forward"), browser, SLOT( forward() ),
00099             CTRL+Key_Right );
00100     go->insertItem( icon_home, tr("&Home"), browser, SLOT( home() ) );
00101 
00102     QPopupMenu* help = new QPopupMenu( this );
00103     help->insertItem( tr("&About ..."), this, SLOT( about() ) );
00104     help->insertItem( tr("About &Qt ..."), this, SLOT( aboutQt() ) );
00105 
00106     hist = new QPopupMenu( this );
00107     QStringList::Iterator it = history.begin();
00108     for ( ; it != history.end(); ++it )
00109    mHistory[ hist->insertItem( *it ) ] = *it;
00110     connect( hist, SIGNAL( activated( int ) ),
00111         this, SLOT( histChosen( int ) ) );
00112 
00113     bookm = new QPopupMenu( this );
00114     bookm->insertItem( tr( "Add Bookmark" ), this, SLOT( addBookmark() ) );
00115     bookm->insertSeparator();
00116 
00117     QStringList::Iterator it2 = bookmarks.begin();
00118     for ( ; it2 != bookmarks.end(); ++it2 )
00119    mBookmarks[ bookm->insertItem( *it2 ) ] = *it2;
00120     connect( bookm, SIGNAL( activated( int ) ),
00121         this, SLOT( bookmChosen( int ) ) );
00122 
00123     menuBar()->insertItem( tr("&File"), file );
00124     menuBar()->insertItem( tr("&Go"), go );
00125     menuBar()->insertItem( tr( "History" ), hist );
00126     menuBar()->insertItem( tr( "Bookmarks" ), bookm );
00127     menuBar()->insertSeparator();
00128     menuBar()->insertItem( tr("&Help"), help );
00129 
00130     menuBar()->setItemEnabled( forwardId, FALSE);
00131     menuBar()->setItemEnabled( backwardId, FALSE);
00132     connect( browser, SIGNAL( backwardAvailable( bool ) ),
00133         this, SLOT( setBackwardAvailable( bool ) ) );
00134     connect( browser, SIGNAL( forwardAvailable( bool ) ),
00135         this, SLOT( setForwardAvailable( bool ) ) );
00136 
00137 
00138     QToolBar* toolbar = new QToolBar( this );
00139     addToolBar( toolbar, "Toolbar");
00140     QToolButton* button;
00141 
00142     button = new QToolButton( icon_back, tr("Backward"), "", browser, SLOT(backward()), toolbar );
00143     connect( browser, SIGNAL( backwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
00144     button->setEnabled( FALSE );
00145     button = new QToolButton( icon_forward, tr("Forward"), "", browser, SLOT(forward()), toolbar );
00146     connect( browser, SIGNAL( forwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
00147     button->setEnabled( FALSE );
00148     button = new QToolButton( icon_home, tr("Home"), "", browser, SLOT(home()), toolbar );
00149 
00150     toolbar->addSeparator();
00151 
00152     pathCombo = new QComboBox( TRUE, toolbar );
00153     connect( pathCombo, SIGNAL( activated( const QString & ) ),
00154         this, SLOT( pathSelected( const QString & ) ) );
00155     toolbar->setStretchableWidget( pathCombo );
00156     setRightJustification( TRUE );
00157     setDockEnabled( DockLeft, FALSE );
00158     setDockEnabled( DockRight, FALSE );
00159 
00160     pathCombo->insertItem( home_ );
00161     browser->setFocus();
00162 
00163 }
00164 
00165 
00166 void TGo4HelpWindow::setBackwardAvailable( bool b)
00167 {
00168     menuBar()->setItemEnabled( backwardId, b);
00169 }
00170 
00171 void TGo4HelpWindow::setForwardAvailable( bool b)
00172 {
00173     menuBar()->setItemEnabled( forwardId, b);
00174 }
00175 
00176 
00177 void TGo4HelpWindow::textChanged()
00178 {
00179     if ( browser->documentTitle().isNull() )
00180    setCaption( "Go4 - Helpviewer - " + browser->context() );
00181     else
00182    setCaption( "Go4 - Helpviewer - " + browser->documentTitle() ) ;
00183 
00184     selectedURL = browser->context();
00185 
00186     if ( !selectedURL.isEmpty() && pathCombo ) {
00187    bool exists = FALSE;
00188    int i;
00189    for ( i = 0; i < pathCombo->count(); ++i ) {
00190        if ( pathCombo->text( i ) == selectedURL ) {
00191       exists = TRUE;
00192       break;
00193        }
00194    }
00195    if ( !exists ) {
00196        pathCombo->insertItem( selectedURL, 0 );
00197        pathCombo->setCurrentItem( 0 );
00198        mHistory[ hist->insertItem( selectedURL ) ] = selectedURL;
00199    } else
00200        pathCombo->setCurrentItem( i );
00201    selectedURL = QString::null;
00202     }
00203 }
00204 
00205 TGo4HelpWindow::~TGo4HelpWindow()
00206 {
00207     history.clear();
00208     QMap<int, QString>::Iterator it = mHistory.begin();
00209     for ( ; it != mHistory.end(); ++it )
00210    history.append( *it );
00211 
00212     QFile f( QDir::currentDirPath() + "/.history" );
00213     f.open( IO_WriteOnly );
00214     QDataStream s( &f );
00215     s << history;
00216     f.close();
00217 
00218     bookmarks.clear();
00219     QMap<int, QString>::Iterator it2 = mBookmarks.begin();
00220     for ( ; it2 != mBookmarks.end(); ++it2 )
00221    bookmarks.append( *it2 );
00222 
00223     QFile f2( QDir::currentDirPath() + "/.bookmarks" );
00224     f2.open( IO_WriteOnly );
00225     QDataStream s2( &f2 );
00226     s2 << bookmarks;
00227     f2.close();
00228 }
00229 
00230 void TGo4HelpWindow::about()
00231 {
00232     QMessageBox::about( this, "Go4 Online Help",
00233          "Go4 Online Help"
00234          );
00235 }
00236 
00237 
00238 void TGo4HelpWindow::aboutQt()
00239 {
00240     QMessageBox::aboutQt( this, "QBrowser" );
00241 }
00242 
00243 void TGo4HelpWindow::openFile()
00244 {
00245 #ifndef QT_NO_FILEDIALOG
00246     QString fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
00247     if ( !fn.isEmpty() )
00248    browser->setSource( fn );
00249 #endif
00250 }
00251 
00252 void TGo4HelpWindow::newWindow()
00253 {
00254     ( new TGo4HelpWindow(browser->source(), "qbrowser") )->show();
00255 }
00256 
00257 void TGo4HelpWindow::print()
00258 {
00259 #ifndef QT_NO_PRINTER
00260     QPrinter printer;
00261     printer.setFullPage(TRUE);
00262     if ( printer.setup( this ) ) {
00263    QPainter p( &printer );
00264    QPaintDeviceMetrics metrics(p.device());
00265    int dpix = metrics.logicalDpiX();
00266    int dpiy = metrics.logicalDpiY();
00267    const int margin = 72; // pt
00268    QRect body(margin*dpix/72, margin*dpiy/72,
00269          metrics.width()-margin*dpix/72*2,
00270          metrics.height()-margin*dpiy/72*2 );
00271    QSimpleRichText richText( browser->text(), QFont(), browser->context(), browser->styleSheet(),
00272               browser->mimeSourceFactory(), body.height() );
00273    richText.setWidth( &p, body.width() );
00274    QRect view( body );
00275    int page = 1;
00276    do {
00277        richText.draw( &p, body.left(), body.top(), view, colorGroup() );
00278        view.moveBy( 0, body.height() );
00279        p.translate( 0 , -body.height() );
00280        p.drawText( view.right() - p.fontMetrics().width( QString::number(page) ),
00281          view.bottom() + p.fontMetrics().ascent() + 5, QString::number(page) );
00282        if ( view.top()  >= richText.height() )
00283       break;
00284        printer.newPage();
00285        page++;
00286    } while (TRUE);
00287     }
00288 #endif
00289 }
00290 
00291 void TGo4HelpWindow::pathSelected( const QString &_path )
00292 {
00293     browser->setSource( _path );
00294     QMap<int, QString>::Iterator it = mHistory.begin();
00295     bool exists = FALSE;
00296     for ( ; it != mHistory.end(); ++it ) {
00297    if ( *it == _path ) {
00298        exists = TRUE;
00299        break;
00300    }
00301     }
00302     if ( !exists )
00303    mHistory[ hist->insertItem( _path ) ] = _path;
00304 }
00305 
00306 void TGo4HelpWindow::readHistory()
00307 {
00308     if ( QFile::exists( QDir::currentDirPath() + "/.history" ) ) {
00309    QFile f( QDir::currentDirPath() + "/.history" );
00310    f.open( IO_ReadOnly );
00311    QDataStream s( &f );
00312    s >> history;
00313    f.close();
00314    while ( history.count() > 20 )
00315        history.remove( history.begin() );
00316     }
00317 }
00318 
00319 void TGo4HelpWindow::histChosen( int i )
00320 {
00321     if ( mHistory.contains( i ) )
00322    browser->setSource( mHistory[ i ] );
00323 }
00324 
00325 void TGo4HelpWindow::bookmChosen( int i )
00326 {
00327     if ( mBookmarks.contains( i ) )
00328    browser->setSource( mBookmarks[ i ] );
00329 }
00330 
00331 void TGo4HelpWindow::addBookmark()
00332 {
00333     mBookmarks[ bookm->insertItem( caption() ) ] = browser->context();
00334 }
00335 void TGo4HelpWindow::readBookmarks()
00336 {
00337     if ( QFile::exists( QDir::currentDirPath() + "/.bookmarks" ) ) {
00338    QFile f( QDir::currentDirPath() + "/.bookmarks" );
00339    f.open( IO_ReadOnly );
00340    QDataStream s( &f );
00341    s >> bookmarks;
00342    f.close();
00343     }
00344 }
00345 
00346 
00347 
00348 //----------------------------END OF GO4 SOURCE FILE ---------------------