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/****************************************************************************
**
** 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 )
{
readHistory();
readBookmarks();
browser = new TQTextBrowser( this );
browser->mimeSourceFactory()->setFilePath( _path );
browser->setFrameStyle( TQFrame::Panel | TQFrame::Sunken );
connect( browser, SIGNAL( sourceChanged(const TQString& ) ),
this, SLOT( sourceChanged( const TQString&) ) );
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() ), CTRL+Key_N );
file->insertItem( tr("&Open File"), this, SLOT( openFile() ), CTRL+Key_O );
file->insertItem( tr("&Print"), this, SLOT( print() ), CTRL+Key_P );
file->insertSeparator();
file->insertItem( tr("&Close"), this, SLOT( close() ), CTRL+Key_Q );
file->insertItem( tr("E&xit"), qApp, SLOT( closeAllWindows() ), CTRL+Key_X );
// The same three icons are used twice each.
TQIconSet icon_back( TQPixmap("back.xpm") );
TQIconSet icon_forward( TQPixmap("forward.xpm") );
TQIconSet icon_home( TQPixmap("home.xpm") );
TQPopupMenu* go = new TQPopupMenu( this );
backwardId = go->insertItem( icon_back,
tr("&Backward"), browser, SLOT( backward() ),
CTRL+Key_Left );
forwardId = go->insertItem( icon_forward,
tr("&Forward"), browser, SLOT( forward() ),
CTRL+Key_Right );
go->insertItem( icon_home, tr("&Home"), browser, SLOT( home() ) );
TQPopupMenu* help = new TQPopupMenu( this );
help->insertItem( tr("&About"), this, SLOT( about() ) );
help->insertItem( tr("About &TQt"), this, SLOT( aboutTQt() ) );
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()->insertSeparator();
menuBar()->insertItem( tr("&Help"), help );
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::sourceChanged( const TQString& url )
{
if ( browser->documentTitle().isNull() )
setCaption( "TQt Example - Helpviewer - " + url );
else
setCaption( "TQt Example - Helpviewer - " + browser->documentTitle() ) ;
if ( !url.isEmpty() && pathCombo ) {
bool exists = FALSE;
int i;
for ( i = 0; i < pathCombo->count(); ++i ) {
if ( pathCombo->text( i ) == url ) {
exists = TRUE;
break;
}
}
if ( !exists ) {
pathCombo->insertItem( url, 0 );
pathCombo->setCurrentItem( 0 );
mHistory[ hist->insertItem( url ) ] = url;
} else
pathCombo->setCurrentItem( i );
}
}
HelpWindow::~HelpWindow()
{
history = mHistory.values();
TQFile f( TQDir::currentDirPath() + "/.history" );
f.open( IO_WriteOnly );
TQDataStream s( &f );
s << history;
f.close();
bookmarks = mBookmarks.values();
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 400 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( TQPrinter::HighResolution );
printer.setFullPage(TRUE);
if ( printer.setup( this ) ) {
TQPainter p( &printer );
if( !p.isActive() ) // starting printing failed
return;
TQPaintDeviceMetrics metrics(p.device());
int dpiy = metrics.logicalDpiY();
int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
TQRect view( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
TQSimpleRichText richText( browser->text(),
TQFont(),
browser->context(),
browser->styleSheet(),
browser->mimeSourceFactory(),
view.height() );
richText.setWidth( &p, view.width() );
int page = 1;
do {
richText.draw( &p, margin, margin, view, colorGroup() );
view.moveBy( 0, view.height() );
p.translate( 0 , -view.height() );
p.drawText( view.right() - p.fontMetrics().width( TQString::number(page) ),
view.bottom() + p.fontMetrics().ascent() + 5, TQString::number(page) );
if ( view.top() - margin >= richText.height() )
break;
printer.newPage();
page++;
} while (TRUE);
}
#endif
}
void HelpWindow::pathSelected( const TQString &_path )
{
browser->setSource( _path );
if ( mHistory.values().contains(_path) )
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() ) ] = browser->context();
}
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