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- /****************************************************************************
- ** $Id: qt/helpwindow.cpp 3.0.3 edited Oct 12 12:18 $
- **
- ** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
- **
- ** This file is part of an example program for Qt. This example
- ** program may be used, distributed and modified without limitation.
- **
- *****************************************************************************/
-
- #include "helpwindow.h"
- #include <qstatusbar.h>
- #include <qpixmap.h>
- #include <qpopupmenu.h>
- #include <qmenubar.h>
- #include <qtoolbar.h>
- #include <qtoolbutton.h>
- #include <qiconset.h>
- #include <qfile.h>
- #include <qtextstream.h>
- #include <qstylesheet.h>
- #include <qmessagebox.h>
- #include <qfiledialog.h>
- #include <qapplication.h>
- #include <qcombobox.h>
- #include <qevent.h>
- #include <qlineedit.h>
- #include <qobjectlist.h>
- #include <qfileinfo.h>
- #include <qfile.h>
- #include <qdatastream.h>
- #include <qprinter.h>
- #include <qsimplerichtext.h>
- #include <qpainter.h>
- #include <qpaintdevicemetrics.h>
-
- #include <ctype.h>
-
- HelpWindow::HelpWindow( const QString& home_, const QString& _path,
- QWidget* parent, const char *name )
- : QMainWindow( parent, name, WDestructiveClose ),
- pathCombo( 0 ), selectedURL()
- {
- readHistory();
- readBookmarks();
-
- browser = new QTextBrowser( this );
- browser->mimeSourceFactory()->setFilePath( _path );
- browser->setFrameStyle( QFrame::Panel | QFrame::Sunken );
- connect( browser, SIGNAL( textChanged() ),
- this, SLOT( textChanged() ) );
-
- setCentralWidget( browser );
-
- if ( !home_.isEmpty() )
- browser->setSource( home_ );
-
- connect( browser, SIGNAL( highlighted( const QString&) ),
- statusBar(), SLOT( message( const QString&)) );
-
- resize( 640,700 );
-
- QPopupMenu* file = new QPopupMenu( this );
- file->insertItem( tr("&New Window"), this, SLOT( newWindow() ), ALT | Key_N );
- file->insertItem( tr("&Open File"), this, SLOT( openFile() ), ALT | Key_O );
- file->insertItem( tr("&Print"), this, SLOT( print() ), ALT | Key_P );
-
- // The same three icons are used twice each.
- QIconSet icon_back( QPixmap("textdrawing/back.xpm") );
- QIconSet icon_forward( QPixmap("textdrawing/forward.xpm") );
- QIconSet icon_home( QPixmap("textdrawing/home.xpm") );
-
- QPopupMenu* go = new QPopupMenu( this );
- backwardId = go->insertItem( icon_back,
- tr("&Backward"), browser, SLOT( backward() ),
- ALT | Key_Left );
- forwardId = go->insertItem( icon_forward,
- tr("&Forward"), browser, SLOT( forward() ),
- ALT | Key_Right );
- go->insertItem( icon_home, tr("&Home"), browser, SLOT( home() ) );
-
- hist = new QPopupMenu( this );
- QStringList::Iterator it = history.begin();
- for ( ; it != history.end(); ++it )
- mHistory[ hist->insertItem( *it ) ] = *it;
- connect( hist, SIGNAL( activated( int ) ),
- this, SLOT( histChosen( int ) ) );
-
- bookm = new QPopupMenu( this );
- bookm->insertItem( tr( "Add Bookmark" ), this, SLOT( addBookmark() ) );
- bookm->insertSeparator();
-
- QStringList::Iterator it2 = bookmarks.begin();
- for ( ; it2 != bookmarks.end(); ++it2 )
- mBookmarks[ bookm->insertItem( *it2 ) ] = *it2;
- connect( bookm, SIGNAL( activated( int ) ),
- this, SLOT( bookmChosen( int ) ) );
-
- menuBar()->insertItem( tr("&File"), file );
- menuBar()->insertItem( tr("&Go"), go );
- menuBar()->insertItem( tr( "History" ), hist );
- menuBar()->insertItem( tr( "Bookmarks" ), bookm );
-
- menuBar()->setItemEnabled( forwardId, FALSE);
- menuBar()->setItemEnabled( backwardId, FALSE);
- connect( browser, SIGNAL( backwardAvailable( bool ) ),
- this, SLOT( setBackwardAvailable( bool ) ) );
- connect( browser, SIGNAL( forwardAvailable( bool ) ),
- this, SLOT( setForwardAvailable( bool ) ) );
-
-
- QToolBar* toolbar = new QToolBar( this );
- addToolBar( toolbar, "Toolbar");
- QToolButton* button;
-
- button = new QToolButton( icon_back, tr("Backward"), "", browser, SLOT(backward()), toolbar );
- connect( browser, SIGNAL( backwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
- button->setEnabled( FALSE );
- button = new QToolButton( icon_forward, tr("Forward"), "", browser, SLOT(forward()), toolbar );
- connect( browser, SIGNAL( forwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) );
- button->setEnabled( FALSE );
- button = new QToolButton( icon_home, tr("Home"), "", browser, SLOT(home()), toolbar );
-
- toolbar->addSeparator();
-
- pathCombo = new QComboBox( TRUE, toolbar );
- connect( pathCombo, SIGNAL( activated( const QString & ) ),
- this, SLOT( pathSelected( const QString & ) ) );
- toolbar->setStretchableWidget( pathCombo );
- setRightJustification( TRUE );
- setDockEnabled( DockLeft, FALSE );
- setDockEnabled( DockRight, FALSE );
-
- pathCombo->insertItem( home_ );
-
- browser->setFocus();
- }
-
-
- void HelpWindow::setBackwardAvailable( bool b)
- {
- menuBar()->setItemEnabled( backwardId, b);
- }
-
- void HelpWindow::setForwardAvailable( bool b)
- {
- menuBar()->setItemEnabled( forwardId, b);
- }
-
-
- void HelpWindow::textChanged()
- {
- if ( browser->documentTitle().isNull() )
- setCaption( browser->context() );
- else
- setCaption( browser->documentTitle() ) ;
-
- selectedURL = caption();
- if ( !selectedURL.isEmpty() && pathCombo ) {
- bool exists = FALSE;
- int i;
- for ( i = 0; i < pathCombo->count(); ++i ) {
- if ( pathCombo->text( i ) == selectedURL ) {
- exists = TRUE;
- break;
- }
- }
- if ( !exists ) {
- pathCombo->insertItem( selectedURL, 0 );
- pathCombo->setCurrentItem( 0 );
- mHistory[ hist->insertItem( selectedURL ) ] = selectedURL;
- } else
- pathCombo->setCurrentItem( i );
- selectedURL = QString::null;
- }
- }
-
- HelpWindow::~HelpWindow()
- {
- history.clear();
- QMap<int, QString>::Iterator it = mHistory.begin();
- for ( ; it != mHistory.end(); ++it )
- history.append( *it );
-
- QFile f( QDir::currentDirPath() + "/.history" );
- f.open( IO_WriteOnly );
- QDataStream s( &f );
- s << history;
- f.close();
-
- bookmarks.clear();
- QMap<int, QString>::Iterator it2 = mBookmarks.begin();
- for ( ; it2 != mBookmarks.end(); ++it2 )
- bookmarks.append( *it2 );
-
- QFile f2( QDir::currentDirPath() + "/.bookmarks" );
- f2.open( IO_WriteOnly );
- QDataStream s2( &f2 );
- s2 << bookmarks;
- f2.close();
- }
-
- void HelpWindow::about()
- {
- QMessageBox::about( this, "HelpViewer Example",
- "<p>This example implements a simple HTML help viewer "
- "using Qt's rich text capabilities</p>"
- "<p>It's just about 100 lines of C++ code, so don't expect too much :-)</p>"
- );
- }
-
-
- void HelpWindow::aboutQt()
- {
- QMessageBox::aboutQt( this, "QBrowser" );
- }
-
- void HelpWindow::openFile()
- {
- #ifndef QT_NO_FILEDIALOG
- QString fn = QFileDialog::getOpenFileName( QString::null, QString::null, this );
- if ( !fn.isEmpty() )
- browser->setSource( fn );
- #endif
- }
-
- void HelpWindow::newWindow()
- {
- ( new HelpWindow(browser->source(), "qbrowser") )->show();
- }
-
- void HelpWindow::print()
- {
- #ifndef QT_NO_PRINTER
- QPrinter printer;
- printer.setFullPage(TRUE);
- if ( printer.setup() ) {
- QPainter p( &printer );
- QPaintDeviceMetrics metrics(p.device());
- int dpix = metrics.logicalDpiX();
- int dpiy = metrics.logicalDpiY();
- const int margin = 72; // pt
- QRect body(margin*dpix/72, margin*dpiy/72,
- metrics.width()-margin*dpix/72*2,
- metrics.height()-margin*dpiy/72*2 );
- QFont font("times", 10);
- QStringList filePaths = browser->mimeSourceFactory()->filePath();
- QString file;
- QStringList::Iterator it = filePaths.begin();
- for ( ; it != filePaths.end(); ++it ) {
- file = QUrl( *it, QUrl( browser->source() ).path() ).path();
- if ( QFile::exists( file ) )
- break;
- else
- file = QString::null;
- }
- if ( file.isEmpty() )
- return;
- QFile f( file );
- if ( !f.open( IO_ReadOnly ) )
- return;
- QTextStream ts( &f );
- QSimpleRichText richText( ts.read(), font, browser->context(), browser->styleSheet(),
- browser->mimeSourceFactory(), body.height() );
- richText.setWidth( &p, body.width() );
- QRect view( body );
- int page = 1;
- do {
- richText.draw( &p, body.left(), body.top(), view, colorGroup() );
- view.moveBy( 0, body.height() );
- p.translate( 0 , -body.height() );
- p.setFont( font );
- p.drawText( view.right() - p.fontMetrics().width( QString::number(page) ),
- view.bottom() + p.fontMetrics().ascent() + 5, QString::number(page) );
- if ( view.top() >= richText.height() )
- break;
- printer.newPage();
- page++;
- } while (TRUE);
- }
- #endif
- }
-
- void HelpWindow::pathSelected( const QString &_path )
- {
- browser->setSource( _path );
- QMap<int, QString>::Iterator it = mHistory.begin();
- bool exists = FALSE;
- for ( ; it != mHistory.end(); ++it ) {
- if ( *it == _path ) {
- exists = TRUE;
- break;
- }
- }
- if ( !exists )
- mHistory[ hist->insertItem( _path ) ] = _path;
- }
-
- void HelpWindow::readHistory()
- {
- if ( QFile::exists( QDir::currentDirPath() + "/.history" ) ) {
- QFile f( QDir::currentDirPath() + "/.history" );
- f.open( IO_ReadOnly );
- QDataStream s( &f );
- s >> history;
- f.close();
- while ( history.count() > 20 )
- history.remove( history.begin() );
- }
- }
-
- void HelpWindow::readBookmarks()
- {
- if ( QFile::exists( QDir::currentDirPath() + "/.bookmarks" ) ) {
- QFile f( QDir::currentDirPath() + "/.bookmarks" );
- f.open( IO_ReadOnly );
- QDataStream s( &f );
- s >> bookmarks;
- f.close();
- }
- }
-
- void HelpWindow::histChosen( int i )
- {
- if ( mHistory.contains( i ) )
- browser->setSource( mHistory[ i ] );
- }
-
- void HelpWindow::bookmChosen( int i )
- {
- if ( mBookmarks.contains( i ) )
- browser->setSource( mBookmarks[ i ] );
- }
-
- void HelpWindow::addBookmark()
- {
- mBookmarks[ bookm->insertItem( caption() ) ] = caption();
- }
-