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/***************************************************************************
* $Id$
**
* 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.
**
****************************************************************************/
import org.kde.qt.*;
import java.util.*;
class HelpWindow extends QMainWindow
{
private QTextBrowser browser;
private QComboBox pathCombo;
private int backwardId, forwardId;
private String selectedURL;
private ArrayList history = new ArrayList();
private ArrayList bookmarks = new ArrayList();
private HashMap mHistory = new HashMap();
private HashMap mBookmarks = new HashMap();
private QPopupMenu hist, bookm;
HelpWindow( String home_, String _path )
{
this(home_, _path, null, null);
}
HelpWindow( String home_, String _path,
QWidget parent, String name )
{
super( parent, name, WDestructiveClose );
readHistory();
readBookmarks();
browser = new QTextBrowser( this );
browser.mimeSourceFactory().setFilePath( new String[] { _path } );
browser.setFrameStyle( QFrame.Panel | QFrame.Sunken );
connect( browser, SIGNAL(" textChanged()"),
this, SLOT(" textChanged()") );
setCentralWidget( browser );
if ( !home_.equals("") )
browser.setSource( home_ );
connect( browser, SIGNAL(" highlighted( String)"),
statusBar(), SLOT(" message( String)") );
resize( 640,700 );
QPopupMenu file = new QPopupMenu( this );
file.insertItem( tr("&New Window"), this, SLOT(" newWindow()"), new QKeySequence(CTRL+Key_N) );
file.insertItem( tr("&Open File"), this, SLOT(" openFile()"), new QKeySequence(CTRL+Key_O) );
file.insertItem( tr("&Print"), this, SLOT(" print()"), new QKeySequence(CTRL+Key_P) );
file.insertSeparator();
file.insertItem( tr("&Close"), this, SLOT(" close()"), new QKeySequence(CTRL+Key_Q) );
file.insertItem( tr("E&xit"), qApp(), SLOT(" closeAllWindows()"), new QKeySequence(CTRL+Key_X) );
// The same three icons are used twice each.
QIconSet icon_back = new QIconSet( new QPixmap("back.xpm") );
QIconSet icon_forward = new QIconSet( new QPixmap("forward.xpm") );
QIconSet icon_home = new QIconSet( new QPixmap("home.xpm") );
QPopupMenu go = new QPopupMenu( this );
backwardId = go.insertItem( icon_back,
tr("&Backward"), browser, SLOT(" backward()"),
new QKeySequence(CTRL+Key_Left) );
forwardId = go.insertItem( icon_forward,
tr("&Forward"), browser, SLOT(" forward()"),
new QKeySequence(CTRL+Key_Right) );
go.insertItem( icon_home, tr("&Home"), browser, SLOT(" home()") );
QPopupMenu help = new QPopupMenu( this );
help.insertItem( tr("&About ..."), this, SLOT(" about()") );
help.insertItem( tr("About &Qt ..."), this, SLOT(" aboutQt()") );
hist = new QPopupMenu( this );
Iterator it = history.iterator();
while (it.hasNext()) {
String item = (String) it.next();
mHistory.put(new Integer(hist.insertItem( item )), item);
}
connect( hist, SIGNAL(" activated( int )"),
this, SLOT(" histChosen( int )") );
bookm = new QPopupMenu( this );
bookm.insertItem( tr( "Add Bookmark" ), this, SLOT(" addBookmark()") );
bookm.insertSeparator();
Iterator it2 = bookmarks.iterator();
while (it2.hasNext()) {
String item = (String) it2.next();
mBookmarks.put(new Integer(bookm.insertItem( item )), item);
}
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( boolean )"),
this, SLOT(" setBackwardAvailable( boolean )") );
connect( browser, SIGNAL(" forwardAvailable( boolean )"),
this, SLOT(" setForwardAvailable( boolean )") );
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(boolean)"), button, SLOT(" setEnabled(boolean)") );
button.setEnabled( false );
button = new QToolButton( icon_forward, tr("Forward"), "", browser, SLOT("forward()"), toolbar );
connect( browser, SIGNAL(" forwardAvailable(boolean)"), button, SLOT(" setEnabled(boolean)") );
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( String )"),
this, SLOT(" pathSelected( String )") );
toolbar.setStretchableWidget( pathCombo );
setRightJustification( true );
setDockEnabled( DockLeft, false );
setDockEnabled( DockRight, false );
pathCombo.insertItem( home_ );
browser.setFocus();
}
void setBackwardAvailable( boolean b)
{
menuBar().setItemEnabled( backwardId, b);
}
void setForwardAvailable( boolean b)
{
menuBar().setItemEnabled( forwardId, b);
}
void textChanged()
{
if ( browser.documentTitle() == null ) {
setCaption( "Qt Example - Helpviewer - " + browser.context() );
selectedURL = browser.context();
}
else {
setCaption( "Qt Example - Helpviewer - " + browser.documentTitle() ) ;
selectedURL = browser.documentTitle();
}
if ( !selectedURL.equals("") && pathCombo != null ) {
boolean 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.put( new Integer(hist.insertItem( selectedURL )), selectedURL);
} else
pathCombo.setCurrentItem( i );
selectedURL = null;
}
}
public void cleanUp()
{
history.clear();
Iterator it = mHistory.values().iterator();
while (it.hasNext())
history.add(it.next());
QFile f = new QFile( QDir.currentDirPath() + "/.history" );
f.open( QIODevice.IO_WriteOnly );
QTextStream t = new QTextStream( f );
Iterator it1 = history.iterator();
while (it1.hasNext()) {
String item = (String) it1.next();
t.writeRawBytes( item, item.length() );
t.writeRawBytes( "\n", 1 );
}
f.close();
bookmarks.clear();
Iterator it3 = mBookmarks.values().iterator();
while (it3.hasNext())
bookmarks.add(it3.next());
QFile f2 = new QFile( QDir.currentDirPath() + "/.bookmarks" );
f2.open( QIODevice.IO_WriteOnly );
QTextStream t2 = new QTextStream( f2 );
Iterator it2 = bookmarks.iterator();
while (it2.hasNext()) {
String item = (String) it2.next();
t2.writeRawBytes( item, item.length() );
t2.writeRawBytes( "\n", 1 );
}
f2.close();
}
void 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 Java code, so don't expect too much :-)</p>"
);
}
void aboutQt()
{
QMessageBox.aboutQt( this, "QBrowser" );
}
void openFile()
{
String fn = QFileDialog.getOpenFileName( "", "", this );
if ( !fn.equals("") )
browser.setSource( fn );
}
void newWindow()
{
( new HelpWindow(browser.source(), "qbrowser") ).show();
}
void print()
{
QPrinter printer = new QPrinter();//(QPrinter.HighResolution );
printer.setFullPage(true);
if ( printer.setup( this ) ) {
QPainter p = new QPainter( printer );
QPaintDeviceMetrics metrics = new QPaintDeviceMetrics(p.device());
int dpix = metrics.logicalDpiX();
int dpiy = metrics.logicalDpiY();
int margin = 72; // pt
QRect body = new QRect(margin*dpix/72, margin*dpiy/72,
metrics.width()-margin*dpix/72*2,
metrics.height()-margin*dpiy/72*2 );
QFont font = new QFont("times", 10);
ArrayList filePaths = browser.mimeSourceFactory().filePath();
String file = "";
Iterator it = filePaths.iterator();
while (it.hasNext()) {
file = new QUrl( new QUrl((String) it.next()), new QUrl( browser.source() ).path() ).path();
if ( QFile.exists( file ) )
break;
else
file = "";
}
if ( file.equals("") )
return;
QFile f = new QFile( file );
if ( !f.open( QIODevice.IO_ReadOnly ) )
return;
QTextStream ts = new QTextStream( f );
QSimpleRichText richText = new QSimpleRichText( ts.read(), font, browser.context(), browser.styleSheet(),
browser.mimeSourceFactory(), body.height() );
richText.setWidth( p, body.width() );
QRect view = new QRect( body.topLeft(), body.bottomRight() );
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( new Integer(page).toString() ),
view.bottom() + p.fontMetrics().ascent() + 5, new Integer(page).toString() );
if ( view.top() >= richText.height() )
break;
printer.newPage();
page++;
} while (true);
}
}
void pathSelected( String _path )
{
browser.setSource( _path );
Iterator it = mHistory.values().iterator();
boolean exists = false;
while (it.hasNext()) {
if ( ((String) it.next()).equals(_path) ) {
exists = true;
break;
}
}
if ( !exists )
mHistory.put( new Integer(hist.insertItem( _path )), _path);
}
void readHistory()
{
if ( QFile.exists( QDir.currentDirPath() + "/.history" ) ) {
QFile f = new QFile( QDir.currentDirPath() + "/.history" );
f.open( QIODevice.IO_ReadOnly );
QTextStream t = new QTextStream( f );
while ( !t.atEnd() ) {
String item = t.readLine();
history.add((Object) item);
}
f.close();
while ( history.size() > 20 )
history.remove( 0 );
}
}
void readBookmarks()
{
if ( QFile.exists( QDir.currentDirPath() + "/.bookmarks" ) ) {
QFile f = new QFile( QDir.currentDirPath() + "/.bookmarks" );
f.open( QIODevice.IO_ReadOnly );
QTextStream t = new QTextStream( f );
while ( !t.atEnd() ) {
String item = t.readLine();
bookmarks.add((Object) item);
}
f.close();
}
}
void histChosen( int i )
{
if ( mHistory.containsKey( new Integer(i) ) )
browser.setSource( (String) mHistory.get( new Integer(i) ) );
}
void bookmChosen( int i )
{
if ( mBookmarks.containsKey( new Integer(i) ) )
browser.setSource( (String) mBookmarks.get( new Integer(i) ) );
}
void addBookmark()
{
mBookmarks.put( new Integer(bookm.insertItem( caption() )), browser.context() );
}
}
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