/* emacs: -*- Mode: C; c-style: "bsd"; c-basic-offset: 4; c-recognize-knr-p: nil; -*- */

 #include "texteditor.h"

 #include <qcanvas.h>

 #include <qstatusbar.h>

 #include <qmessagebox.h>

 #include <qaction.h>

 #include <qapplication.h>

 #include <qpainter.h>

 #include <qprinter.h>

 #include <qfile.h>

 #include <qfiledialog.h>

 #include <qtoolbar.h>

 #include <qpopupmenu.h>

 #include <qmenubar.h>

 #include <qtextedit.h>

 #include <qaccel.h>

 #include <qtextstream.h>

 #include <qpaintdevicemetrics.h>

 #include <qsettings.h>

 #include <qfontdialog.h>

 #include <qmessagebox.h>

 #include <qcolordialog.h>

 #include <qregexp.h>

 #include <qlineedit.h>

 #include <qsimplerichtext.h>

 #include <iostream>

 #include <cstdlib>

 #include <typeinfo>

 #include "icons/fileopen.xpm"

 #include "icons/filesave.xpm"

 #include "icons/fileprint.xpm"

 #include "icons/editundo.xpm"	

 #include "icons/editredo.xpm"	

 #include "icons/editcopy.xpm"

 #include "icons/editcut.xpm"

 #include "icons/editpaste.xpm"

 #include "icons/edittrash.xpm"

 #include "icons/formatfixedfont.xpm"

 #include "icons/formattextbold.xpm"

 #include "icons/formattextitalic.xpm"

 #include "icons/formattextunder.xpm"

 #include "icons/formattextleft.xpm"

 #include "icons/formattextcenter.xpm"

 #include "icons/formattextright.xpm"

 #include "icons/formattextjustify.xpm"

 #include "icons/formattextsub.xpm"

 #include "icons/formattextsuper.xpm"

 extern QCanvas* actCanvas;

 extern int statusbarTime;

 extern QSettings settings;

 extern QAction *actionViewToggleNoteEditor;

 using namespace std;

 ///////////////////////////////////////////////////////////////////////

 ///////////////////////////////////////////////////////////////////////

 TextEditor::TextEditor()

 {

     printer = new QPrinter( QPrinter::HighResolution );

 	printer->setPrinterName (settings.readEntry("/vym/mainwindow/printerName",printer->printerName()));

 	// Editor (use MyTextEdit to wrap verticalAlignmentChanged to 

 	//         int argument. see header file)

     e = new MyTextEdit( this, "editor" );

     e->setFocus();

 	e->setTextFormat(RichText);		// default

 	e->setTabStopWidth (20);		// unit is pixel

 	e->setColor (black);

 	connect (e, SIGNAL( textChanged() ), this, SLOT( editorChanged() ) );

     setCentralWidget( e );

     statusBar()->message( "Ready", statusbarTime);

 	setCaption("VYM - Note Editor");

 	// Toolbars

 	setupFileActions();

 	setupEditActions();

 	setupFormatActions();

 	setupSettingsActions();

 	// Various states

 	emptyPaper   = QBrush(gray);

 	filledPaper  = QBrush(white);

 	inactivePaper= QBrush(black);

 	setInactive();

 	// Load Settings

 	resize (settings.readNumEntry( "/vym/noteeditor/geometry/width", 450),

 	        settings.readNumEntry( "/vym/noteeditor/geometry/height",600));

 	move   (settings.readNumEntry( "/vym/noteeditor/geometry/posX", 150),

 	        settings.readNumEntry( "/vym/noteeditor/geometry/posY",  50));

 	if (settings.readEntry( "/vym/noteeditor/showWithMain","yes") =="yes")

 		setShowWithMain(true);

 	else	

 		setShowWithMain(false);

 	varFont.fromString( settings.readEntry 

 		("/vym/noteeditor/fonts/varFont",

 		"Nimbus Sans l,14,-1,5,48,0,0,0,0,0") 

 	);

 	fixedFont.fromString (settings.readEntry (

 		"/vym/noteeditor/fonts/fixedFont",

 		"Courier,14,-1,5,48,0,0,0,1,0") 

 	);

 	QString s=settings.readEntry ("/vym/noteeditor/fonts/fonthintDefault","variable");

 	if (s == "fixed")

 	{	

 		actionSettingsFonthintDefault->setOn (true);

 		e->setCurrentFont (fixedFont);

 	} else	

 	{

 		actionSettingsFonthintDefault->setOn (false);

 		e->setCurrentFont (varFont);

 	}	

 	filenameHint="";

 	// Save settings in vymrc

 	settings.writeEntry("/vym/mainwindow/printerName",printer->printerName());

 }

 TextEditor::~TextEditor()

 {

     if (printer) delete printer;

 	// Save Settings

 	settings.writeEntry( "/vym/noteeditor/geometry/width", width() );

 	settings.writeEntry( "/vym/noteeditor/geometry/height", height() );

 	settings.writeEntry( "/vym/noteeditor/geometry/posX", pos().x() );

 	settings.writeEntry( "/vym/noteeditor/geometry/posY", pos().y() );

 	if (showWithMain())

 		settings.writeEntry( "/vym/noteeditor/showWithMain","yes");

 	else	

 		settings.writeEntry( "/vym/noteeditor/showWithMain","no");

 	QString s;

 	if (actionSettingsFonthintDefault->isOn() )

 		s="fixed";

 	else	

 		s="variable";

 	settings.writeEntry( "/vym/noteeditor/fonts/fonthintDefault",s );

 	settings.writeEntry ("/vym/noteeditor/fonts/varFont",

 		varFont.toString() );

 	settings.writeEntry ("/vym/noteeditor/fonts/fixedFont",

 		fixedFont.toString() );

 }

 bool TextEditor::isEmpty()

 {

 	if (e->text().length())

 		return false;

 	else

 		return true;

 }

 void TextEditor::setShowWithMain(bool v)

 {

 	showwithmain=v;

 }

 bool TextEditor::showWithMain()

 {

 	return showwithmain;

 }

 void TextEditor::setFontHint (const QString &fh)

 {

 	if (fh=="fixed")

 		actionFormatUseFixedFont->setOn (true);

 	else

 		actionFormatUseFixedFont->setOn (false);

 }

 QString TextEditor::getFontHint()

 {

 	if (actionFormatUseFixedFont->isOn())

 		return "fixed";

 	else	

 		return "var";

 }

 QString TextEditor::getFontHintDefault()

 {

 	if (actionSettingsFonthintDefault->isOn())

 		return "fixed";

 	else	

 		return "var";

 }

 void TextEditor::setFilename(const QString &fn)

 {

 	if (state==filledEditor)

 		if (fn.isEmpty() )

 		{

 			filename="";

 			statusBar()->message( "No filename available for this note.", statusbarTime );

 		}	

 		else

 		{

 			filename=fn;

 			statusBar()->message( QString( "Current filename is %1" ).arg( filename ), statusbarTime );

 		}	

 }

 QString TextEditor::getFilename()

 {

 	return filename;

 }

 void TextEditor::setFilenameHint(const QString &fnh)

 {

 	filenameHint=fnh;

 }

 QString TextEditor::getFilenameHint()

 {

 	return filenameHint;

 }

 bool TextEditor::findText(const QString &t, const bool &cs)

 {

 	bool wo=false;	// word matches

 	if (e->find (t, cs, wo, true, 0, 0 ))

 		return true;

 	else	

 		return false;

 }

 void TextEditor::setupFileActions()

 {

     QToolBar *tb = new QToolBar( this );

     tb->setLabel( "File Actions" );

     QPopupMenu *menu = new QPopupMenu( this );

     menuBar()->insertItem( tr( "&File" ), menu );

     QAction *a;

     a = new QAction( tr( "Import" ), QPixmap( fileopen_xpm), tr( "&Import..." ), CTRL + Key_O, this, "fileImport" );

     connect( a, SIGNAL( activated() ), this, SLOT( textLoad() ) );

 	a->setEnabled(false);

     a->addTo( tb );

     a->addTo( menu );

 	actionFileLoad=a;

     menu->insertSeparator();

     a = new QAction( tr( "Export Note (HTML)" ), QPixmap( filesave_xpm ), tr( "&Export..." ), CTRL + Key_S, this, "fileSave" );

     connect( a, SIGNAL( activated() ), this, SLOT( textSave() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionFileSave=a;

     a = new QAction( tr( "Export Note As (HTML) " ), QPixmap(), tr( "Export &As... (HTML)" ), 0, this, "exportHTML" );

     connect( a, SIGNAL( activated() ), this, SLOT( textSaveAs() ) );

     a->addTo( menu );

 	actionFileSaveAs=a;

     a = new QAction( tr( "Export Note As (ASCII) " ), QPixmap(), tr( "Export &As...(ASCII)" ), ALT + Key_X, this, "exportASCII" );

     connect( a, SIGNAL( activated() ), this, SLOT( textExportAsASCII() ) );

     a->addTo( menu );

 	actionFileSaveAs=a;

     menu->insertSeparator();

     a = new QAction( tr( "Print Note" ), QPixmap( fileprint_xpm ), tr( "&Print..." ), CTRL + Key_P, this, "filePrint" );

     connect( a, SIGNAL( activated() ), this, SLOT( textPrint() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionFilePrint=a;

 }

 void TextEditor::setupEditActions()

 {

     QToolBar *tb = new QToolBar( this );

     tb->setLabel( "Edit Actions" );

     QPopupMenu *menu = new QPopupMenu( this );

     menuBar()->insertItem( tr( "&Edit" ), menu );

     QAction *a;

     a = new QAction( tr( "Undo" ), QPixmap(editundo_xpm), tr( "&Undo" ), CTRL + Key_Z, this, "undoEvent" );

     connect( a, SIGNAL( activated() ), e, SLOT( undo() ) );

     a->addTo( menu );

     a->addTo( tb);

 	actionEditUndo=a;

     a = new QAction( tr( "Redo" ), QPixmap( editredo_xpm ), tr( "&Redo" ), CTRL + Key_Y, this, "editRedo" ); 

     connect( a, SIGNAL( activated() ), e, SLOT( redo() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionEditRedo=a;

     menu->insertSeparator();

     a = new QAction( tr( "Select and copy all" ), QPixmap(), tr( "Select and copy &all" ), CTRL + Key_A, this, "editcopyall" ); 

     connect( a, SIGNAL( activated() ), this, SLOT( editCopyAll() ) );

     a->addTo( menu );

     menu->insertSeparator();

     a = new QAction( tr( "Copy" ), QPixmap( editcopy_xpm ), tr( "&Copy" ), CTRL + Key_C, this, "editCopy" );

     connect( a, SIGNAL( activated() ), e, SLOT( copy() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionEditCopy=a;

     a = new QAction( tr( "Cut" ), QPixmap( editcut_xpm ), tr( "Cu&t" ), CTRL + Key_X, this, "editCut" );

     connect( a, SIGNAL( activated() ), e, SLOT( cut() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionEditCut=a;

     a = new QAction( tr( "Paste" ), QPixmap( editpaste_xpm ), tr( "&Paste" ), CTRL + Key_V, this, "editPaste" );

     connect( a, SIGNAL( activated() ), e, SLOT( paste() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionEditPaste=a;

     a = new QAction( tr( "Delete all" ), QPixmap( edittrash_xpm ), tr( "&Delete All" ), 0, this, "editDeleteAll" );

     connect( a, SIGNAL( activated() ), e, SLOT( clear() ) );

     a->addTo( tb );

     a->addTo( menu );

 	actionEditDeleteAll=a;

 	a = new QAction( tr( "Convert paragraphs to linebreaks" ), QPixmap(), tr( "&Convert Paragraphs" ), ALT + Key_P, this, "editConvertPar" );

     connect( a, SIGNAL( activated() ), this, SLOT( textConvertPar() ) );

     a->addTo( menu );

 	actionEditConvertPar=a;

 	a = new QAction( tr( "Join all lines of a paragraph" ), QPixmap(), tr( "&Join lines" ), ALT + Key_J, this, "editJoinLines" );

     connect( a, SIGNAL( activated() ), this, SLOT( textJoinLines() ) );

     a->addTo( menu );

 	actionEditJoinLines=a;

 }

 void TextEditor::setupFormatActions()

 {

     QToolBar *tb = new QToolBar( this );

     tb->setLabel( "Format Actions" );

     QPopupMenu *menu = new QPopupMenu( this );

     menuBar()->insertItem( tr( "&Format" ), menu );

     QAction *a;

     a = new QAction( tr( "Toggle font hint for the whole text" ), QPixmap(formatfixedfont_xpm), tr( "&Font hint" ), ALT + Key_I, this, "fontHint" );

 	a->setToggleAction (true);

 	a->setOn (settings.readBoolEntry ("/vym/noteeditor/fonts/useFixedByDefault",false) );

     connect( a, SIGNAL( activated() ), this, SLOT( toggleFonthint() ) );

     a->addTo( menu );

     a->addTo( tb );

 	actionFormatUseFixedFont=a;

 	menu->insertSeparator();

     comboFont = new QComboBox( true, tb );

     QFontDatabase db;

     comboFont->insertStringList( db.families() );

     connect( comboFont, SIGNAL( activated( const QString & ) ),

 	     this, SLOT( textFamily( const QString & ) ) );

     comboFont->lineEdit()->setText( QApplication::font().family() );

     comboSize = new QComboBox( true, tb );

     QValueList<int> sizes = db.standardSizes();

     QValueList<int>::Iterator it = sizes.begin();

     for ( ; it != sizes.end(); ++it )

 	comboSize->insertItem( QString::number( *it ) );

     connect( comboSize, SIGNAL( activated( const QString & ) ),

 	     this, SLOT( textSize( const QString & ) ) );

     comboSize->lineEdit()->setText( QString::number( QApplication::font().pointSize() ) );

     menu->insertSeparator();

     QPixmap pix( 16, 16 );

     pix.fill( e->color());

     actionTextColor = new QAction( pix, tr( "&Color..." ), 0, this, "textColor" );

     connect( actionTextColor, SIGNAL( activated() ), this, SLOT( textColor() ) );

     actionTextColor->addTo( tb );

     actionTextColor->addTo( menu );

     actionTextBold = new QAction( QPixmap (formattextbold_xpm), tr( "&Bold" ), CTRL + Key_B, this, "textBold" );

     connect( actionTextBold, SIGNAL( activated() ), this, SLOT( textBold() ) );

     actionTextBold->addTo( tb );

     actionTextBold->addTo( menu );

     actionTextBold->setToggleAction( true );

     actionTextItalic = new QAction( QPixmap(formattextitalic_xpm ), tr( "&Italic" ), CTRL + Key_I, this, "textItalic" );

     connect( actionTextItalic, SIGNAL( activated() ), this, SLOT( textItalic() ) );

     actionTextItalic->addTo( tb );

     actionTextItalic->addTo( menu );

     actionTextItalic->setToggleAction( true );

     actionTextUnderline = new QAction( QPixmap (formattextunder_xpm ), tr( "&Underline" ), CTRL + Key_U, this, "textUnderline" );

     connect( actionTextUnderline, SIGNAL( activated() ), this, SLOT( textUnderline() ) );

     actionTextUnderline->addTo( tb );

     actionTextUnderline->addTo( menu );

     actionTextUnderline->setToggleAction( true );

     menu->insertSeparator();

     QActionGroup *grp = new QActionGroup( this );

     connect( grp, SIGNAL( selected( QAction* ) ), this, SLOT( textAlign( QAction* ) ) );

     actionAlignLeft = new QAction( QPixmap (formattextleft_xpm ), tr( "&Left" ), CTRL + Key_L, grp, "textLeft" );

     actionAlignLeft->setToggleAction( true );

     actionAlignCenter = new QAction( QPixmap (formattextcenter_xpm ), tr( "C&enter" ), CTRL + Key_E, grp, "textCenter" );

     actionAlignCenter->setToggleAction( true );

     actionAlignRight = new QAction( QPixmap (formattextright_xpm ), tr( "&Right" ), CTRL + Key_R, grp, "textRight" );

     actionAlignRight->setToggleAction( true );

     actionAlignJustify = new QAction( QPixmap ( formattextjustify_xpm ), tr( "&Justify" ), CTRL + Key_J, grp, "textjustify" );

     actionAlignJustify->setToggleAction( true );

     grp->addTo( tb );

     grp->addTo( menu );

     QActionGroup *grp2 = new QActionGroup( this );

     grp2->setExclusive(false);

     actionAlignSubScript = new QAction( QPixmap (formattextsub_xpm ), tr( "Subs&cript" ), CTRL + SHIFT + Key_B, grp2, "textSubscript" );

     actionAlignSubScript->setToggleAction( true );

     connect(actionAlignSubScript, SIGNAL(activated()), this, SLOT(textVAlign()));

     actionAlignSuperScript = new QAction( QPixmap (formattextsuper_xpm ), tr( "Su&perscript" ), CTRL + SHIFT + Key_P, grp2, "textSuperscript" );

     actionAlignSuperScript->setToggleAction( true );

     connect(actionAlignSuperScript, SIGNAL(activated()), this, SLOT(textVAlign()));

     menu->insertSeparator();

     grp2->addTo(tb);

     grp2->addTo(menu);

     connect( e, SIGNAL( currentFontChanged( const QFont & ) ),

 	     this, SLOT( fontChanged( const QFont & ) ) );

     connect( e, SIGNAL( currentColorChanged( const QColor & ) ),

 	     this, SLOT( colorChanged( const QColor & ) ) );

     connect( e, SIGNAL( currentAlignmentChanged( int ) ),

 	     this, SLOT( alignmentChanged( int ) ) );

     connect( e, SIGNAL( currentVerticalAlignmentChanged(int)),

 	     this, SLOT( verticalAlignmentChanged(int)));

 }

 void TextEditor::setupSettingsActions()

 {

     QPopupMenu *menu = new QPopupMenu( this );

     menuBar()->insertItem( tr( "&Settings" ), menu );

     QAction *a;

     a = new QAction( tr( "Set fixed font" ), QPixmap(), tr( "Set &fixed font" ), 0, this, "setFixedFont" );

     connect( a, SIGNAL( activated() ), this, SLOT( setFixedFont() ) );

     a->addTo( menu );

 	actionSettingsFixedFont=a;

     a = new QAction( tr( "Set variable font" ), QPixmap(), tr( "Set &variable font" ), 0, this, "setvariableFont" );

     connect( a, SIGNAL( activated() ), this, SLOT( setVarFont() ) );

     a->addTo( menu );

 	actionSettingsVarFont=a;

     a = new QAction( tr( "Used fixed font by default" ), QPixmap(), tr( "&fixed font is default" ), 0, this, "fonthintDefault" );

 	a->setToggleAction (true);

 	// set state later in constructor...

     a->addTo( menu );

 	actionSettingsFonthintDefault=a;

 }

 void TextEditor::textLoad()

 {

 	if (state!=inactiveEditor)

 	{

 		if (e->length()) 

 		{

 			QMessageBox mb( "VYM - Note Editor",

 				"Loading will overwrite the existing note",

 				QMessageBox::Warning,

 				QMessageBox::Yes | QMessageBox::Default,

 				QMessageBox::Cancel,

 				0 );

 			mb.setButtonText( QMessageBox::Yes, "Load note" );

 			switch( mb.exec() ) {

 				case QMessageBox::Cancel:

 					return;

 					break;

 			}

 		} 

 		// Load note

 		QFileDialog *fd=new QFileDialog( this);

 		fd->addFilter ("ASCII texts (*.txt)");

 		fd->addFilter ("VYM notes (*.html)");

 		fd->show();

 		QString fn;

 		if ( fd->exec() == QDialog::Accepted )

 			fn = fd->selectedFile();

 		if ( !fn.isEmpty() )

 		{

 			QFile f( fn );

 			if ( !f.open( IO_ReadOnly ) )

 			return;

 			QTextStream ts( &f );

 			setText( ts.read() );

 			editorChanged();

 		}

 	}

 }

 void TextEditor::closeEvent( QCloseEvent* ce )

 {

     ce->accept();	// TextEditor can be reopened with show()

     actionViewToggleNoteEditor->setOn (false);

     showwithmain=false;

     return;

 }

 QString TextEditor::getText()

 {

 	return e->text();

 }

 void TextEditor::editorChanged()

 {

 	// received, when QTextEdit::text() has changed

 	EditorState	oldstate=state;

 	if (isEmpty())

 		state=emptyEditor;

 	else

 		state=filledEditor;

 		if (state==emptyEditor)

 			e->setPaper (emptyPaper);

 		else

 			e->setPaper (filledPaper);

 	// SLOT is LinkableMapObj, which will update systemFlag

 	emit (textHasChanged() );

 }

 void TextEditor::setText(QString t)

 {

 	if ( !QStyleSheet::mightBeRichText( t ) )

 		t = QStyleSheet::convertFromPlainText( t, QStyleSheetItem::WhiteSpaceNormal );

 	e->setReadOnly(false);

 	e->setText(t);

 //	editorChanged();	//not called automagically  FIXME or is it?

 	enableActions();

 }

 void TextEditor::setInactive()

 {

 	state=inactiveEditor;

 	setText("");

 	e->setPaper (inactivePaper);

 	e->setReadOnly (true);

 	disableActions();

 }

 void TextEditor::editCopyAll()

 {

 	e->selectAll();

 	e->copy();

 }

 void TextEditor::textSaveAs()

 {

     QString fn = QFileDialog::getSaveFileName( QString::null, "VYM Note (HTML) (*.html);;All files (*)",

 					       this,"export note dialog",tr("Export Note to single file") );

     if ( !fn.isEmpty() ) 

 	{

 		QFile file (fn);

 		if (file.exists())

 		{

 			QMessageBox mb( "VYM",

 				tr("The file ") + fn + 

 				tr(" exists already. "

 				"Do you want to overwrite it?"),

 			QMessageBox::Warning,

 			QMessageBox::Yes | QMessageBox::Default,

 			QMessageBox::Cancel | QMessageBox::Escape,

 			QMessageBox::NoButton );

 			mb.setButtonText( QMessageBox::Yes, tr("Overwrite") );

 			mb.setButtonText( QMessageBox::No, tr("Cancel"));

 			switch( mb.exec() ) {

 				case QMessageBox::Yes:

 					// save 

 					filename = fn;

 					textSave();

 					return;

 				case QMessageBox::Cancel:

 					// do nothing

 					break;

 			}

 		} else

 		{

 			filename = fn;

 			textSave();

 			return;

 		}			

     }

 	statusBar()->message(tr( "Couldn't export note ") + fn, statusbarTime );

 }

 void TextEditor::textSave()

 {

     if ( filename.isEmpty() ) 

 	{

 		textSaveAs();

 		return;

     }

     QString text = e->text();

     QFile f( filename );

     if ( !f.open( IO_WriteOnly ) ) 

 	{

 		statusBar()->message( QString("Could not write to %1").arg(filename),

 					  statusbarTime );

 		return;

     }

     QTextStream t( &f );

     t << text;

     f.close();

     e->setModified( FALSE );

     statusBar()->message( QString( "Note exported as %1" ).arg( filename ), statusbarTime );

 }

 void TextEditor::textConvertPar()

 {

 	// In X11 a copy&paste generates paragraphs, 

 	// which is not always wanted

 	// This function replaces paragraphs by linebreaks.

 	int parFrom, parTo, indFrom, indTo;

 	e->getSelection (&parFrom,&indFrom,&parTo,&indTo);

 	QString t;

 	if (parFrom>-1)

 		t=e->selectedText();

 	else

 		t=e->text();

 	QRegExp re("<p.*>");

 	re.setMinimal(true);

 	t.replace (re,"");

 	t.replace ("</p>","<br />");

 	if (parFrom>-1)

 	{

 		e->setCursorPosition (parFrom,indFrom);

 		e->cut();

 		// Tried to simply insert the changed text with

 		// e->insert (t,(uint)(QTextEdit::RemoveSelected));

 		// but then the html would be quoted. So I use the ugly

 		// way: insert a marker, replace it in whole text of QTextEdit

 		QString marker="R3PlAcEMeL4teR!";

 		e->insert (marker);

 		e->setText (e->text().replace(marker,t));

 	} else

 		e->setText(t);

 }

 void TextEditor::textJoinLines()

 {

 	int parFrom, parTo, indFrom, indTo;

 	e->getSelection (&parFrom,&indFrom,&parTo,&indTo);

 	QString t;

 	if (parFrom>-1)

 		t=e->selectedText();

 	else

 		t=e->text();

 	// In addition to textConvertPar it is sometimes

 	// useful to join all lines of a paragraph

 	QRegExp re("</p>\n+<p>(?!</p>)");

 	re.setMinimal(true);

 	t.replace (re," ");

 	// Above we may have introduced new " " at beginning of a

 	// paragraph - remove it.

 	re.setPattern("<p> ");

 	t.replace (re,"<p>");

 	if (parFrom>-1)

 	{

 		e->setCursorPosition (parFrom,indFrom);

 		e->cut();

 		// Tried to simply insert the changed text with

 		// e->insert (t,(uint)(QTextEdit::RemoveSelected));

 		// but then the html would be quoted. So I use the ugly

 		// way: insert a marker, replace it in whole text of QTextEdit

 		QString marker="R3PlAcEMeL4teR!";

 		e->insert (marker);

 		e->setText (e->text().replace(marker,t));

 	} else

 		e->setText(t);

 }

 QString textConvertToASCII(const QString &t)

 {

 	QString r=t;

 	// convert all "<br*>" to "\n"

 	QRegExp re("<br.*>");

 	re.setMinimal(true);

 	r.replace (re,"\n");

 	// convert all "<p>" to "\n"

 	re.setPattern ("<p>");

 	r.replace (re,"\n");

 	// remove all remaining tags 

 	re.setPattern ("<.*>");

 	r.replace (re,"");

 	// convert "&", "<" and ">"

 	re.setPattern (">");

 	r.replace (re,">");

 	re.setPattern ("<");

 	r.replace (re,"<");

 	re.setPattern ("&");

 	r.replace (re,"&");

 	re.setPattern (""");

 	r.replace (re,"\"");

 	return r;

 }

 void TextEditor::textExportAsASCII()

 {

 	QString text = textConvertToASCII( e->text());

 	QString fn,s;

 	if (!filenameHint.isEmpty())

 	{

 		if (!filenameHint.contains (".txt"))

 			s=filenameHint+".txt";

 		else	

 			s=filenameHint;

 	} else	

 		s=QString::null;

 	fn = QFileDialog::getSaveFileName( s, "VYM Note (ASCII) (*.txt);;All files (*)", this,"export note dialog",tr("Export Note to single file (ASCII)") );

 	int ret=-1;

     if ( !fn.isEmpty() ) 

 	{

 		QFile file (fn);

 		if (file.exists())

 		{

 			QMessageBox mb( "VYM",

 				tr("The file ") + fn + 

 				tr(" exists already. "

 				"Do you want to overwrite it?"),

 			QMessageBox::Warning,

 			QMessageBox::Yes | QMessageBox::Default,

 			QMessageBox::Cancel | QMessageBox::Escape,

 			QMessageBox::NoButton );

 			mb.setButtonText( QMessageBox::Yes, tr("Overwrite") );

 			mb.setButtonText( QMessageBox::No, tr("Cancel"));

 			ret=mb.exec();

 		}	

 		if (ret==QMessageBox::Cancel)

 			return;

 		// save 

 		if ( !file.open( IO_WriteOnly ) ) 

 			statusBar()->message( QString("Could not write to %1").arg(filename),

 						  statusbarTime );

 		else

 		{

 			QTextStream t( &file );

 			t << text;

 			file.close();

 			statusBar()->message( QString( "Note exported as %1" ).arg( fn ), statusbarTime );

 		}

     }

 }

 void TextEditor::textPrint()

 {

     printer->setFullPage(TRUE);

     if ( printer->setup( this ) ) 

 	{

 		QPainter p( printer );

 		// Check that there is a valid device to print to.

 		if ( !p.device() ) return;

 		QPaintDeviceMetrics metrics( p.device() );

 		int dpiy = metrics.logicalDpiY();

 		int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins

 		QRect body( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );

 		QFont font( e->currentFont() );

 		font.setPointSize( 10 ); // we define 10pt to be a nice base size for printing

 		QSimpleRichText richText( e->text(), font,

 					  e->context(),

 					  e->styleSheet(),

 					  e->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);

     }

 }

 void TextEditor::textEditUndo()

 {

 }

 void TextEditor::toggleFonthint()

 {

 	setUpdatesEnabled (false);

 	e->selectAll (true);

 	if (!actionFormatUseFixedFont->isOn() ) 

 		e->setCurrentFont (varFont);

 	else	

 		e->setCurrentFont (fixedFont);

 	e->selectAll (false);

 	setUpdatesEnabled (true);

 	repaint();

 }

 void TextEditor::setFixedFont()

 {

 	bool ok;

 	QFont font =QFontDialog::getFont(

                     &ok, fixedFont, this );

     if ( ok ) 

         // font is set to the font the user selected

 		fixedFont=font;

 }

 void TextEditor::setVarFont()

 {

 	bool ok;

 	QFont font =QFontDialog::getFont(

                     &ok, varFont, this );

     if ( ok ) 

         // font is set to the font the user selected

 		varFont=font;

 }

 void TextEditor::textBold()

 {

     e->setBold( actionTextBold->isOn() );

 }

 void TextEditor::textUnderline()

 {

     e->setUnderline( actionTextUnderline->isOn() );

 }

 void TextEditor::textItalic()

 {

     e->setItalic( actionTextItalic->isOn() );

 }

 void TextEditor::textFamily( const QString &f )

 {

     e->setFamily( f );

 }

 void TextEditor::textSize( const QString &p )

 {

     e->setPointSize( p.toInt() );

 }

 void TextEditor::textColor()

 {

     QColor col = QColorDialog::getColor( e->color(), this );

     if ( !col.isValid() )

 	return;

     e->setColor( col );

     QPixmap pix( 16, 16 );

     pix.fill( black );

     actionTextColor->setIconSet( pix );

 }

 void TextEditor::textAlign( QAction *a )

 {

     if ( a == actionAlignLeft )

 	e->setAlignment( AlignLeft );

     else if ( a == actionAlignCenter )

 	e->setAlignment( AlignHCenter );

     else if ( a == actionAlignRight )

 	e->setAlignment( AlignRight );

     else if ( a == actionAlignJustify )

 	e->setAlignment( AlignJustify );

 }

 void TextEditor::textVAlign()

 {

     if ( sender() == actionAlignSuperScript && actionAlignSuperScript->isOn()) {

 	e->setVerticalAlignment( QTextEdit::AlignSuperScript);

     } else if (sender() == actionAlignSubScript && actionAlignSubScript->isOn()) {

 	e->setVerticalAlignment( QTextEdit::AlignSubScript);

     } else {

 	e->setVerticalAlignment( QTextEdit::AlignNormal);

     }

 }

 void TextEditor::fontChanged( const QFont &f )

 {

     comboFont->lineEdit()->setText( f.family() );

     comboSize->lineEdit()->setText( QString::number( f.pointSize() ) );

     actionTextBold->setOn( f.bold() );

     actionTextItalic->setOn( f.italic() );

     actionTextUnderline->setOn( f.underline() );

 }

 void TextEditor::colorChanged( const QColor &c )

 {

     QPixmap pix( 16, 16 );

     pix.fill( c );

     actionTextColor->setIconSet( pix );

 }

 void TextEditor::alignmentChanged( int a )

 {

     if ( ( a == AlignAuto ) || ( a & AlignLeft ))

 	actionAlignLeft->setOn( true );

     else if ( ( a & AlignHCenter ) )

 	actionAlignCenter->setOn( true );

     else if ( ( a & AlignRight ) )

 	actionAlignRight->setOn( true );

     else if ( ( a & AlignJustify ) )

 	actionAlignJustify->setOn( true );

 }

 void TextEditor::verticalAlignmentChanged(int a) 

 {

     if (a == QTextEdit::AlignSuperScript ) {

 	actionAlignSuperScript->setOn(true);

 	actionAlignSubScript->setOn(false);

     } else if (a == QTextEdit::AlignSubScript ) {

 	actionAlignSuperScript->setOn(false);

 	actionAlignSubScript->setOn(true);

     } else {

 	actionAlignSuperScript->setOn(false);

 	actionAlignSubScript->setOn(false);

     }

 }

 void TextEditor::enableActions()

 {

 	actionFileLoad->setEnabled(true);

 	actionFileSave->setEnabled(true);

 	actionFileSaveAs->setEnabled(true);

 	actionFilePrint->setEnabled(true);

 	actionEditUndo->setEnabled(true);

 	actionEditRedo->setEnabled(true);

 	actionEditCopy->setEnabled(true);

 	actionEditCut->setEnabled(true);

 	actionEditPaste->setEnabled(true);

 	actionEditDeleteAll->setEnabled(true);

 	actionEditConvertPar->setEnabled(true);

 	actionEditJoinLines->setEnabled(true);

 	actionFormatUseFixedFont->setEnabled(true);

 }

 void TextEditor::disableActions()

 {

 	actionFileLoad->setEnabled(false);

 	actionFileSave->setEnabled(false);

 	actionFileSaveAs->setEnabled(false);

 	actionFilePrint->setEnabled(false);

 	actionEditUndo->setEnabled(false);

 	actionEditRedo->setEnabled(false);

 	actionEditCopy->setEnabled(false);

 	actionEditCut->setEnabled(false);

 	actionEditPaste->setEnabled(false);

 	actionEditDeleteAll->setEnabled(false);

 	actionEditConvertPar->setEnabled(false);

 	actionEditJoinLines->setEnabled(false);

 	actionFormatUseFixedFont->setEnabled(false);

 }