diff options
Diffstat (limited to 'examples/demo/textdrawing/helpwindow.cpp')
| -rw-r--r-- | examples/demo/textdrawing/helpwindow.cpp | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/examples/demo/textdrawing/helpwindow.cpp b/examples/demo/textdrawing/helpwindow.cpp new file mode 100644 index 000000000..de353df7d --- /dev/null +++ b/examples/demo/textdrawing/helpwindow.cpp @@ -0,0 +1,337 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for TQt. 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 TQString& home_, const TQString& _path, + TQWidget* parent, const char *name ) + : TQMainWindow( parent, name, WDestructiveClose ), + pathCombo( 0 ), selectedURL() +{ + readHistory(); + readBookmarks(); + + browser = new TQTextBrowser( this ); + browser->mimeSourceFactory()->setFilePath( _path ); + browser->setFrameStyle( TQFrame::Panel | TQFrame::Sunken ); + connect( browser, SIGNAL( textChanged() ), + this, SLOT( textChanged() ) ); + + setCentralWidget( browser ); + + if ( !home_.isEmpty() ) + browser->setSource( home_ ); + + connect( browser, SIGNAL( highlighted( const TQString&) ), + statusBar(), SLOT( message( const TQString&)) ); + + resize( 640,700 ); + + TQPopupMenu* file = new TQPopupMenu( 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. + TQIconSet icon_back( TQPixmap("textdrawing/previous.png") ); + TQIconSet icon_forward( TQPixmap("textdrawing/next.png") ); + TQIconSet icon_home( TQPixmap("textdrawing/home.png") ); + + TQPopupMenu* go = new TQPopupMenu( 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 TQPopupMenu( this ); + TQStringList::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 TQPopupMenu( this ); + bookm->insertItem( tr( "Add Bookmark" ), this, SLOT( addBookmark() ) ); + bookm->insertSeparator(); + + TQStringList::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 ) ) ); + + + TQToolBar* toolbar = new TQToolBar( this ); + addToolBar( toolbar, "Toolbar"); + TQToolButton* button; + + button = new TQToolButton( icon_back, tr("Backward"), "", browser, SLOT(backward()), toolbar ); + connect( browser, SIGNAL( backwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) ); + button->setEnabled( FALSE ); + button = new TQToolButton( icon_forward, tr("Forward"), "", browser, SLOT(forward()), toolbar ); + connect( browser, SIGNAL( forwardAvailable(bool) ), button, SLOT( setEnabled(bool) ) ); + button->setEnabled( FALSE ); + button = new TQToolButton( icon_home, tr("Home"), "", browser, SLOT(home()), toolbar ); + + toolbar->addSeparator(); + + pathCombo = new TQComboBox( TRUE, toolbar ); + connect( pathCombo, SIGNAL( activated( const TQString & ) ), + this, SLOT( pathSelected( const TQString & ) ) ); + 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 = TQString::null; + } +} + +HelpWindow::~HelpWindow() +{ + history.clear(); + TQMap<int, TQString>::Iterator it = mHistory.begin(); + for ( ; it != mHistory.end(); ++it ) + history.append( *it ); + + TQFile f( TQDir::currentDirPath() + "/.history" ); + f.open( IO_WriteOnly ); + TQDataStream s( &f ); + s << history; + f.close(); + + bookmarks.clear(); + TQMap<int, TQString>::Iterator it2 = mBookmarks.begin(); + for ( ; it2 != mBookmarks.end(); ++it2 ) + bookmarks.append( *it2 ); + + TQFile f2( TQDir::currentDirPath() + "/.bookmarks" ); + f2.open( IO_WriteOnly ); + TQDataStream s2( &f2 ); + s2 << bookmarks; + f2.close(); +} + +void HelpWindow::about() +{ + TQMessageBox::about( this, "HelpViewer Example", + "<p>This example implements a simple HTML help viewer " + "using TQt's rich text capabilities</p>" + "<p>It's just about 100 lines of C++ code, so don't expect too much :-)</p>" + ); +} + + +void HelpWindow::aboutTQt() +{ + TQMessageBox::aboutTQt( this, "TQBrowser" ); +} + +void HelpWindow::openFile() +{ +#ifndef QT_NO_FILEDIALOG + TQString fn = TQFileDialog::getOpenFileName( TQString::null, TQString::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 + TQPrinter printer; + printer.setFullPage(TRUE); + if ( printer.setup() ) { + TQPainter p( &printer ); + TQPaintDeviceMetrics metrics(p.device()); + int dpix = metrics.logicalDpiX(); + int dpiy = metrics.logicalDpiY(); + const int margin = 72; // pt + TQRect body(margin*dpix/72, margin*dpiy/72, + metrics.width()-margin*dpix/72*2, + metrics.height()-margin*dpiy/72*2 ); + TQFont font("times", 10); + TQStringList filePaths = browser->mimeSourceFactory()->filePath(); + TQString file; + TQStringList::Iterator it = filePaths.begin(); + for ( ; it != filePaths.end(); ++it ) { + file = TQUrl( *it, TQUrl( browser->source() ).path() ).path(); + if ( TQFile::exists( file ) ) + break; + else + file = TQString::null; + } + if ( file.isEmpty() ) + return; + TQFile f( file ); + if ( !f.open( IO_ReadOnly ) ) + return; + TQTextStream ts( &f ); + TQSimpleRichText richText( ts.read(), font, browser->context(), browser->styleSheet(), + browser->mimeSourceFactory(), body.height() ); + richText.setWidth( &p, body.width() ); + TQRect 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( TQString::number(page) ), + view.bottom() + p.fontMetrics().ascent() + 5, TQString::number(page) ); + if ( view.top() >= richText.height() ) + break; + printer.newPage(); + page++; + } while (TRUE); + } +#endif +} + +void HelpWindow::pathSelected( const TQString &_path ) +{ + browser->setSource( _path ); + TQMap<int, TQString>::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 ( TQFile::exists( TQDir::currentDirPath() + "/.history" ) ) { + TQFile f( TQDir::currentDirPath() + "/.history" ); + f.open( IO_ReadOnly ); + TQDataStream s( &f ); + s >> history; + f.close(); + while ( history.count() > 20 ) + history.remove( history.begin() ); + } +} + +void HelpWindow::readBookmarks() +{ + if ( TQFile::exists( TQDir::currentDirPath() + "/.bookmarks" ) ) { + TQFile f( TQDir::currentDirPath() + "/.bookmarks" ); + f.open( IO_ReadOnly ); + TQDataStream 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(); +} |