KoRichText.cpp

/****************************************************************************
** Implementation of the internal TQt classes dealing with rich text
**
** Created : 990101
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the kernel module of the TQt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.TQPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid TQt Enterprise Edition or TQt Professional Edition
** licenses may use this file in accordance with the TQt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about TQt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for TQPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
 
#include "KoRichText.h"
#include "KoTextFormat.h"
#include "KoTextParag.h"
 
#include <tqpaintdevicemetrics.h>
#include "tqdrawutil.h" // for KoTextHorizontalLine
 
#include <stdlib.h>
#include "KoParagCounter.h"
#include "KoTextDocument.h"
#include <kdebug.h>
#include <tdeversion.h>
#include <tdeglobal.h>
#include <tdelocale.h>
#include <tqtextengine_p.h>
 
//#define DEBUG_COLLECTION
//#define DEBUG_TABLE_RENDERING
 
//static KoTextFormatCollection *qFormatCollection = 0;
 
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
void KoTextDocCommandHistory::addCommand( KoTextDocCommand *cmd )
{
    if ( current < (int)history.count() - 1 ) {
    TQPtrList<KoTextDocCommand> commands;
    commands.setAutoDelete( false );
 
    for( int i = 0; i <= current; ++i ) {
        commands.insert( i, history.at( 0 ) );
        history.take( 0 );
    }
 
    commands.append( cmd );
    history.clear();
    history = commands;
    history.setAutoDelete( true );
    } else {
    history.append( cmd );
    }
 
    if ( (int)history.count() > steps )
    history.removeFirst();
    else
    ++current;
}
 
KoTextCursor *KoTextDocCommandHistory::undo( KoTextCursor *c )
{
    if ( current > -1 ) {
    KoTextCursor *c2 = history.at( current )->unexecute( c );
    --current;
    return c2;
    }
    return 0;
}
 
KoTextCursor *KoTextDocCommandHistory::redo( KoTextCursor *c )
{
    if ( current > -1 ) {
    if ( current < (int)history.count() - 1 ) {
        ++current;
        return history.at( current )->execute( c );
    }
    } else {
    if ( history.count() > 0 ) {
        ++current;
        return history.at( current )->execute( c );
    }
    }
    return 0;
}
 
bool KoTextDocCommandHistory::isUndoAvailable()
{
    return current > -1;
}
 
bool KoTextDocCommandHistory::isRedoAvailable()
{
   return current > -1 && current < (int)history.count() - 1 || current == -1 && history.count() > 0;
}
 
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
KoTextDocDeleteCommand::KoTextDocDeleteCommand( KoTextDocument *d, int i, int idx, const TQMemArray<KoTextStringChar> &str )
    : KoTextDocCommand( d ), id( i ), index( idx ), parag( 0 ), text( str )
{
    for ( int j = 0; j < (int)text.size(); ++j ) {
    if ( text[ j ].format() )
        text[ j ].format()->addRef();
    }
}
 
/*KoTextDocDeleteCommand::KoTextDocDeleteCommand( KoTextParag *p, int idx, const TQMemArray<KoTextStringChar> &str )
    : KoTextDocCommand( 0 ), id( -1 ), index( idx ), parag( p ), text( str )
{
    for ( int i = 0; i < (int)text.size(); ++i ) {
    if ( text[ i ].format() )
        text[ i ].format()->addRef();
    }
}*/
 
KoTextDocDeleteCommand::~KoTextDocDeleteCommand()
{
    for ( int i = 0; i < (int)text.size(); ++i ) {
    if ( text[ i ].format() )
        text[ i ].format()->removeRef();
    }
    text.resize( 0 );
}
 
KoTextCursor *KoTextDocDeleteCommand::execute( KoTextCursor *c )
{
    KoTextParag *s = doc ? doc->paragAt( id ) : parag;
    if ( !s ) {
        if(doc)
           kdWarning(32500) << "can't locate parag at " << id << ", last parag: " << doc->lastParag()->paragId() << endl;
    return 0;
    }
 
    cursor.setParag( s );
    cursor.setIndex( index );
    int len = text.size();
    if ( c )
    *c = cursor;
    if ( doc ) {
    doc->setSelectionStart( KoTextDocument::Temp, &cursor );
    for ( int i = 0; i < len; ++i )
        cursor.gotoNextLetter();
    doc->setSelectionEnd( KoTextDocument::Temp, &cursor );
    doc->removeSelectedText( KoTextDocument::Temp, &cursor );
    if ( c )
        *c = cursor;
    } else {
    s->remove( index, len );
    }
 
    return c;
}
 
KoTextCursor *KoTextDocDeleteCommand::unexecute( KoTextCursor *c )
{
    KoTextParag *s = doc ? doc->paragAt( id ) : parag;
    if ( !s ) {
        if(doc)
           kdWarning(32500) << "can't locate parag at " << id << ", last parag: " << doc->lastParag()->paragId() << endl;
    return 0;
    }
 
    cursor.setParag( s );
    cursor.setIndex( index );
    TQString str = KoTextString::toString( text );
    cursor.insert( str, true, &text );
    cursor.setParag( s );
    cursor.setIndex( index );
    if ( c ) {
    c->setParag( s );
    c->setIndex( index );
    for ( int i = 0; i < (int)text.size(); ++i )
        c->gotoNextLetter();
    }
 
    s = cursor.parag();
    while ( s ) {
    s->format();
    s->setChanged( true );
    if ( c && s == c->parag() )
        break;
    s = s->next();
    }
 
    return &cursor;
}
 
KoTextDocFormatCommand::KoTextDocFormatCommand( KoTextDocument *d, int sid, int sidx, int eid, int eidx,
                    const TQMemArray<KoTextStringChar> &old, const KoTextFormat *f, int fl )
    : KoTextDocCommand( d ), startId( sid ), startIndex( sidx ), endId( eid ), endIndex( eidx ), oldFormats( old ), flags( fl )
{
    format = d->formatCollection()->format( f );
    for ( int j = 0; j < (int)oldFormats.size(); ++j ) {
    if ( oldFormats[ j ].format() )
        oldFormats[ j ].format()->addRef();
    }
}
 
KoTextDocFormatCommand::~KoTextDocFormatCommand()
{
    format->removeRef();
    for ( int j = 0; j < (int)oldFormats.size(); ++j ) {
    if ( oldFormats[ j ].format() )
        oldFormats[ j ].format()->removeRef();
    }
}
 
KoTextCursor *KoTextDocFormatCommand::execute( KoTextCursor *c )
{
    KoTextParag *sp = doc->paragAt( startId );
    KoTextParag *ep = doc->paragAt( endId );
    if ( !sp || !ep )
    return c;
 
    KoTextCursor start( doc );
    start.setParag( sp );
    start.setIndex( startIndex );
    KoTextCursor end( doc );
    end.setParag( ep );
    end.setIndex( endIndex );
 
    doc->setSelectionStart( KoTextDocument::Temp, &start );
    doc->setSelectionEnd( KoTextDocument::Temp, &end );
    doc->setFormat( KoTextDocument::Temp, format, flags );
    doc->removeSelection( KoTextDocument::Temp );
    if ( endIndex == ep->length() ) // ### Not in TQRT - report sent. Description at http://bugs.kde.org/db/34/34556.html
        end.gotoLeft();
    *c = end;
    return c;
}
 
KoTextCursor *KoTextDocFormatCommand::unexecute( KoTextCursor *c )
{
    KoTextParag *sp = doc->paragAt( startId );
    KoTextParag *ep = doc->paragAt( endId );
    if ( !sp || !ep )
    return 0;
 
    int idx = startIndex;
    int fIndex = 0;
    if( !oldFormats.isEmpty()) // ## not in TQRT. Not sure how it can happen.
    {
    for ( ;; ) {
    if ( oldFormats.at( fIndex ).c == '\n' ) {
        if ( idx > 0 ) {
        if ( idx < sp->length() && fIndex > 0 )
            sp->setFormat( idx, 1, oldFormats.at( fIndex - 1 ).format() );
        if ( sp == ep )
            break;
        sp = sp->next();
        idx = 0;
        }
        fIndex++;
    }
    if ( oldFormats.at( fIndex ).format() )
        sp->setFormat( idx, 1, oldFormats.at( fIndex ).format() );
    idx++;
    fIndex++;
    if ( fIndex >= (int)oldFormats.size() )
        break;
    if ( idx >= sp->length() ) {
        if ( sp == ep )
        break;
        sp = sp->next();
        idx = 0;
    }
    }
    }
    KoTextCursor end( doc );
    end.setParag( ep );
    end.setIndex( endIndex );
    if ( endIndex == ep->length() )
        end.gotoLeft();
    *c = end;
    return c;
}
 
KoTextAlignmentCommand::KoTextAlignmentCommand( KoTextDocument *d, int fParag, int lParag, int na, const TQMemArray<int> &oa )
    : KoTextDocCommand( d ), firstParag( fParag ), lastParag( lParag ), newAlign( na ), oldAligns( oa )
{
}
 
KoTextCursor *KoTextAlignmentCommand::execute( KoTextCursor *c )
{
    KoTextParag *p = doc->paragAt( firstParag );
    if ( !p )
    return c;
    while ( p ) {
    p->setAlignment( newAlign );
    if ( p->paragId() == lastParag )
        break;
    p = p->next();
    }
    return c;
}
 
KoTextCursor *KoTextAlignmentCommand::unexecute( KoTextCursor *c )
{
    KoTextParag *p = doc->paragAt( firstParag );
    if ( !p )
    return c;
    int i = 0;
    while ( p ) {
    if ( i < (int)oldAligns.size() )
        p->setAlignment( oldAligns.at( i ) );
    if ( p->paragId() == lastParag )
        break;
    p = p->next();
    ++i;
    }
    return c;
}
 
 
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
KoTextCursor::KoTextCursor( KoTextDocument *d )
    : doc( d )
{
    idx = 0;
    string = doc ? doc->firstParag() : 0;
    tmpIndex = -1;
}
 
KoTextCursor::KoTextCursor()
{
}
 
KoTextCursor::KoTextCursor( const KoTextCursor &c )
{
    doc = c.doc;
    idx = c.idx;
    string = c.string;
    tmpIndex = c.tmpIndex;
}
 
KoTextCursor &KoTextCursor::operator=( const KoTextCursor &c )
{
    doc = c.doc;
    idx = c.idx;
    string = c.string;
    tmpIndex = c.tmpIndex;
 
    return *this;
}
 
bool KoTextCursor::operator==( const KoTextCursor &c ) const
{
    return doc == c.doc && string == c.string && idx == c.idx;
}
 
void KoTextCursor::insert( const TQString &str, bool checkNewLine, TQMemArray<KoTextStringChar> *formatting )
{
    string->invalidate( idx );
    tmpIndex = -1;
    bool justInsert = true;
    TQString s( str );
#if defined(TQ_WS_WIN)
    if ( checkNewLine )
    s = s.replace( TQRegExp( "\\r" ), "" );
#endif
    if ( checkNewLine )
    justInsert = s.find( '\n' ) == -1;
    if ( justInsert ) {
    string->insert( idx, s );
    if ( formatting ) {
        for ( int i = 0; i < (int)s.length(); ++i ) {
        if ( formatting->at( i ).format() ) {
            formatting->at( i ).format()->addRef();
            string->string()->setFormat( idx + i, formatting->at( i ).format(), true );
        }
        }
    }
    idx += s.length();
    } else {
    TQStringList lst = TQStringList::split( '\n', s, true );
    TQStringList::Iterator it = lst.begin();
    //int y = string->rect().y() + string->rect().height();
    int lastIndex = 0;
    KoTextFormat *lastFormat = 0;
    for ( ; it != lst.end(); ) {
        if ( it != lst.begin() ) {
        splitAndInsertEmptyParag( false, true );
        //string->setEndState( -1 );
#if 0 // no!
        string->prev()->format( -1, false );
#endif
        if ( lastFormat && formatting && string->prev() ) {
            lastFormat->addRef();
            string->prev()->string()->setFormat( string->prev()->length() - 1, lastFormat, true );
        }
        }
        lastFormat = 0;
        TQString s = *it;
        ++it;
        if ( !s.isEmpty() )
        string->insert( idx, s );
            else
                string->invalidate( 0 );
 
        if ( formatting ) {
        int len = s.length();
        for ( int i = 0; i < len; ++i ) {
            if ( formatting->at( i + lastIndex ).format() ) {
            formatting->at( i + lastIndex ).format()->addRef();
            string->string()->setFormat( i + idx, formatting->at( i + lastIndex ).format(), true );
            }
        }
        if ( it != lst.end() )
            lastFormat = formatting->at( len + lastIndex ).format();
        ++len;
        lastIndex += len;
        }
 
        idx += s.length();
    }
#if 0  
    string->format( -1, false );
    int dy = string->rect().y() + string->rect().height() - y;
#endif
    KoTextParag *p = string;
    p->setParagId( p->prev()->paragId() + 1 );
    p = p->next();
    while ( p ) {
        p->setParagId( p->prev()->paragId() + 1 );
        //p->move( dy );
        p->invalidate( 0 );
        p = p->next();
    }
    }
 
#if 0  
    int h = string->rect().height();
    string->format( -1, true );
#endif
    fixCursorPosition();
}
 
void KoTextCursor::gotoLeft()
{
    if ( string->string()->isRightToLeft() )
    gotoNextLetter();
    else
    gotoPreviousLetter();
}
 
void KoTextCursor::gotoPreviousLetter()
{
    tmpIndex = -1;
 
    if ( idx > 0 ) {
    idx = string->string()->previousCursorPosition( idx );
    } else if ( string->prev() ) {
    string = string->prev();
    while ( !string->isVisible() )
        string = string->prev();
    idx = string->length() - 1;
    }
}
 
bool KoTextCursor::place( const TQPoint &p, KoTextParag *s, bool link, int *customItemIndex )
{
    if ( customItemIndex )
        *customItemIndex = -1;
    TQPoint pos( p );
    TQRect r;
    if ( pos.y() < s->rect().y() )
    pos.setY( s->rect().y() );
    while ( s ) {
    r = s->rect();
    r.setWidth( doc ? doc->width() : TQWIDGETSIZE_MAX );
    if ( !s->next() || ( pos.y() >= r.y() && pos.y() < s->next()->rect().y() ) )
        break;
    s = s->next();
    }
 
    if ( !s )
    return false;
 
    setParag( s, false );
    int y = s->rect().y();
    int lines = s->lines();
    KoTextStringChar *chr = 0;
    int index = 0;
    int i = 0;
    int cy = 0;
    //int ch = 0;
    for ( ; i < lines; ++i ) {
    chr = s->lineStartOfLine( i, &index );
    cy = s->lineY( i );
    //ch = s->lineHeight( i );
    if ( !chr )
        return false;
    if ( i < lines - 1 && pos.y() >= y + cy && pos.y() <= y + s->lineY( i+1 ) )
        break;
    }
    int nextLine;
    if ( i < lines - 1 )
    s->lineStartOfLine( i+1, &nextLine );
    else
    nextLine = s->length();
    i = index;
    int x = s->rect().x();
    if ( pos.x() < x )
    pos.setX( x + 1 );
    int cw;
    int curpos = s->length()-1;
    int dist = 10000000;
    while ( i < nextLine ) {
    chr = s->at(i);
    int cpos = x + chr->x;
    cw = chr->width; //s->string()->width( i );
    if ( chr->isCustom() ) {
             if ( pos.x() >= cpos && pos.x() <= cpos + cw &&
                  pos.y() >= y + cy && pos.y() <= y + cy + chr->height() ) {
                if ( customItemIndex )
                    *customItemIndex = i;
        }
    }
        if( chr->rightToLeft )
            cpos += cw;
        int d = cpos - pos.x();
        bool dm = d < 0 ? !chr->rightToLeft : chr->rightToLeft;
        if ( (TQABS( d ) < dist || (dist == d && dm == true )) && string->string()->validCursorPosition( i ) ) {
            dist = TQABS( d );
            if ( !link || pos.x() >= x + chr->x ) {
                curpos = i;
            }
        }
    i++;
    }
    setIndex( curpos, false );
 
    return true;
}
 
void KoTextCursor::gotoRight()
{
    if ( string->string()->isRightToLeft() )
    gotoPreviousLetter();
    else
    gotoNextLetter();
}
 
void KoTextCursor::gotoNextLetter()
{
    tmpIndex = -1;
 
    int len = string->length() - 1;
    if ( idx < len ) {
        idx = string->string()->nextCursorPosition( idx );
    } else if ( string->next() ) {
    string = string->next();
    while ( !string->isVisible() )
        string = string->next();
    idx = 0;
    }
}
 
void KoTextCursor::gotoUp()
{
    int indexOfLineStart;
    int line;
    KoTextStringChar *c = string->lineStartOfChar( idx, &indexOfLineStart, &line );
    if ( !c )
    return;
 
    tmpIndex = TQMAX( tmpIndex, idx - indexOfLineStart );
    if ( indexOfLineStart == 0 ) {
    if ( !string->prev() ) {
            return;
    }
    string = string->prev();
    while ( !string->isVisible() )
        string = string->prev();
    int lastLine = string->lines() - 1;
    if ( !string->lineStartOfLine( lastLine, &indexOfLineStart ) )
        return;
    if ( indexOfLineStart + tmpIndex < string->length() )
        idx = indexOfLineStart + tmpIndex;
    else
        idx = string->length() - 1;
    } else {
    --line;
    int oldIndexOfLineStart = indexOfLineStart;
    if ( !string->lineStartOfLine( line, &indexOfLineStart ) )
        return;
    if ( indexOfLineStart + tmpIndex < oldIndexOfLineStart )
        idx = indexOfLineStart + tmpIndex;
    else
        idx = oldIndexOfLineStart - 1;
    }
    fixCursorPosition();
}
 
void KoTextCursor::gotoDown()
{
    int indexOfLineStart;
    int line;
    KoTextStringChar *c = string->lineStartOfChar( idx, &indexOfLineStart, &line );
    if ( !c )
    return;
 
    tmpIndex = TQMAX( tmpIndex, idx - indexOfLineStart );
    if ( line == string->lines() - 1 ) {
    if ( !string->next() ) {
            return;
    }
    string = string->next();
    while ( !string->isVisible() )
        string = string->next();
    if ( !string->lineStartOfLine( 0, &indexOfLineStart ) )
        return;
    int end;
    if ( string->lines() == 1 )
        end = string->length();
    else
        string->lineStartOfLine( 1, &end );
    if ( indexOfLineStart + tmpIndex < end )
        idx = indexOfLineStart + tmpIndex;
    else
        idx = end - 1;
    } else {
    ++line;
    int end;
    if ( line == string->lines() - 1 )
        end = string->length();
    else
        string->lineStartOfLine( line + 1, &end );
    if ( !string->lineStartOfLine( line, &indexOfLineStart ) )
        return;
    if ( indexOfLineStart + tmpIndex < end )
        idx = indexOfLineStart + tmpIndex;
    else
        idx = end - 1;
    }
    fixCursorPosition();
}
 
void KoTextCursor::gotoLineEnd()
{
    tmpIndex = -1;
    int indexOfLineStart;
    int line;
    KoTextStringChar *c = string->lineStartOfChar( idx, &indexOfLineStart, &line );
    if ( !c )
    return;
 
    if ( line == string->lines() - 1 ) {
    idx = string->length() - 1;
    } else {
    c = string->lineStartOfLine( ++line, &indexOfLineStart );
    indexOfLineStart--;
    idx = indexOfLineStart;
    }
}
 
void KoTextCursor::gotoLineStart()
{
    tmpIndex = -1;
    int indexOfLineStart;
    int line;
    KoTextStringChar *c = string->lineStartOfChar( idx, &indexOfLineStart, &line );
    if ( !c )
    return;
 
    idx = indexOfLineStart;
}
 
void KoTextCursor::gotoHome()
{
    tmpIndex = -1;
    if ( doc )
    string = doc->firstParag();
    idx = 0;
}
 
void KoTextCursor::gotoEnd()
{
    // This can happen in a no-auto-resize frame with overflowing contents.
    // Don't prevent going to the end of the text, even if it's not visible.
    //if ( doc && !doc->lastParag()->isValid() )
    //{
//  kdDebug(32500) << "Last parag, " << doc->lastParag()->paragId() << ", is invalid - aborting gotoEnd() !" << endl;
//  return;
//    }
 
    tmpIndex = -1;
    if ( doc )
    string = doc->lastParag();
    idx = string->length() - 1;
}
 
void KoTextCursor::gotoPageUp( int visibleHeight )
{
    tmpIndex = -1;
    KoTextParag *s = string;
    int h = visibleHeight;
    int y = s->rect().y();
    while ( s ) {
    if ( y - s->rect().y() >= h )
        break;
    s = s->prev();
    }
 
    if ( !s && doc )
    s = doc->firstParag();
 
    string = s;
    idx = 0;
}
 
void KoTextCursor::gotoPageDown( int visibleHeight )
{
    tmpIndex = -1;
    KoTextParag *s = string;
    int h = visibleHeight;
    int y = s->rect().y();
    while ( s ) {
    if ( s->rect().y() - y >= h )
        break;
    s = s->next();
    }
 
    if ( !s && doc ) {
    s = doc->lastParag();
    string = s;
    idx = string->length() - 1;
    return;
    }
 
    if ( !s->isValid() )
    return;
 
    string = s;
    idx = 0;
}
 
void KoTextCursor::gotoWordRight()
{
    if ( string->string()->isRightToLeft() )
    gotoPreviousWord();
    else
    gotoNextWord();
}
 
void KoTextCursor::gotoWordLeft()
{
    if ( string->string()->isRightToLeft() )
    gotoNextWord();
    else
    gotoPreviousWord();
}
 
void KoTextCursor::gotoPreviousWord()
{
    gotoPreviousLetter();
    tmpIndex = -1;
    KoTextString *s = string->string();
    bool allowSame = false;
    if ( idx == ( (int)s->length()-1 ) )
        return;
    for ( int i = idx; i >= 0; --i ) {
    if ( s->at( i ).c.isSpace() || s->at( i ).c == '\t' || s->at( i ).c == '.' ||
         s->at( i ).c == ',' || s->at( i ).c == ':' || s->at( i ).c == ';' ) {
        if ( !allowSame )
        continue;
        idx = i + 1;
        return;
    }
    if ( !allowSame && !( s->at( i ).c.isSpace() || s->at( i ).c == '\t' || s->at( i ).c == '.' ||
                  s->at( i ).c == ',' || s->at( i ).c == ':' || s->at( i ).c == ';'  ) )
        allowSame = true;
    }
    idx = 0;
}
 
void KoTextCursor::gotoNextWord()
{
    tmpIndex = -1;
    KoTextString *s = string->string();
    bool allowSame = false;
    for ( int i = idx; i < (int)s->length(); ++i ) {
    if ( ! ( s->at( i ).c.isSpace() || s->at( i ).c == '\t' || s->at( i ).c == '.' ||
         s->at( i ).c == ',' || s->at( i ).c == ':' || s->at( i ).c == ';' ) ) {
        if ( !allowSame )
        continue;
        idx = i;
        return;
    }
    if ( !allowSame && ( s->at( i ).c.isSpace() || s->at( i ).c == '\t' || s->at( i ).c == '.' ||
                  s->at( i ).c == ',' || s->at( i ).c == ':' || s->at( i ).c == ';'  ) )
        allowSame = true;
    }
 
    if ( idx < ((int)s->length()-1) ) {
        gotoLineEnd();
    } else if ( string->next() ) {
    string = string->next();
    while ( !string->isVisible() )
        string = string->next();
    idx = 0;
    } else {
    gotoLineEnd();
    }
}
 
bool KoTextCursor::atParagStart() const
{
    return idx == 0;
}
 
bool KoTextCursor::atParagEnd() const
{
    return idx == string->length() - 1;
}
 
void KoTextCursor::splitAndInsertEmptyParag( bool ind, bool updateIds )
{
    if ( !doc )
    return;
    tmpIndex = -1;
    KoTextFormat *f = 0;
    if ( doc->useFormatCollection() ) {
    f = string->at( idx )->format();
    if ( idx == string->length() - 1 && idx > 0 )
        f = string->at( idx - 1 )->format();
    if ( f->isMisspelled() ) {
            KoTextFormat fNoMisspelled( *f );
            fNoMisspelled.setMisspelled( false );
        f = doc->formatCollection()->format( &fNoMisspelled );
    }
    }
 
    if ( atParagEnd() ) {
    KoTextParag *n = string->next();
    KoTextParag *s = doc->createParag( doc, string, n, updateIds );
    if ( f )
        s->setFormat( 0, 1, f, true );
    s->copyParagData( string );
#if 0
    if ( ind ) {
        int oi, ni;
        s->indent( &oi, &ni );
        string = s;
        idx = ni;
    } else
#endif
        {
        string = s;
        idx = 0;
    }
    } else if ( atParagStart() ) {
    KoTextParag *p = string->prev();
    KoTextParag *s = doc->createParag( doc, p, string, updateIds );
    if ( f )
        s->setFormat( 0, 1, f, true );
    s->copyParagData( string );
    if ( ind ) {
        //s->indent();
        s->format();
        //indent();
        string->format();
    }
    } else {
    TQString str = string->string()->toString().mid( idx, 0xFFFFFF );
    KoTextParag *n = string->next();
    KoTextParag *s = doc->createParag( doc, string, n, updateIds );
    s->copyParagData( string );
    s->remove( 0, 1 );
    s->append( str, true );
    for ( uint i = 0; i < str.length(); ++i ) {
            KoTextStringChar* tsc = string->at( idx + i );
        s->setFormat( i, 1, tsc->format(), true );
        if ( tsc->isCustom() ) {
        KoTextCustomItem * item = tsc->customItem();
        s->at( i )->setCustomItem( item );
        tsc->loseCustomItem();
#if 0
        s->addCustomItem();
        string->removeCustomItem();
#endif
        doc->unregisterCustomItem( item, string );
        doc->registerCustomItem( item, s );
        }
    }
    string->truncate( idx );
#if 0
    if ( ind ) {
        int oi, ni;
        s->indent( &oi, &ni );
        string = s;
        idx = ni;
    } else
#endif
        {
        string = s;
        idx = 0;
    }
    }
}
 
bool KoTextCursor::removePreviousChar()
{
    tmpIndex = -1;
    if ( !atParagStart() ) {
    string->remove( idx-1, 1 );
    idx--;
    // shouldn't be needed, just to make sure.
    fixCursorPosition();
    string->format( -1, true );
    //else if ( string->document() && string->document()->parent() )
    //    string->document()->nextDoubleBuffered = true;
    return false;
    } else if ( string->prev() ) {
    string = string->prev();
    string->join( string->next() );
    string->invalidateCounters();
    return true;
    }
    return false;
}
 
bool KoTextCursor::remove()
{
    tmpIndex = -1;
    if ( !atParagEnd() ) {
    int next = string->string()->nextCursorPosition( idx );
    string->remove( idx, next-idx );
    string->format( -1, true );
    //else if ( doc && doc->parent() )
    //    doc->nextDoubleBuffered = true;
    return false;
    } else if ( string->next() ) {
    if ( string->length() == 1 ) {
        string->next()->setPrev( string->prev() );
        if ( string->prev() )
        string->prev()->setNext( string->next() );
        KoTextParag *p = string->next();
        delete string;
        string = p;
        string->invalidate( 0 );
            string->invalidateCounters();
        KoTextParag *s = string;
        while ( s ) {
        s->id = s->p ? s->p->id + 1 : 0;
        //s->state = -1;
        //s->needPreProcess = true;
        s->changed = true;
        s = s->n;
        }
        string->format();
    } else {
        string->join( string->next() );
    }
    return true;
    }
    return false;
}
 
void KoTextCursor::killLine()
{
    if ( atParagEnd() )
    return;
    string->remove( idx, string->length() - idx - 1 );
    string->format( -1, true );
    //else if ( doc && doc->parent() )
    //doc->nextDoubleBuffered = true;
}
 
#if 0
void KoTextCursor::indent()
{
    int oi = 0, ni = 0;
    string->indent( &oi, &ni );
    if ( oi == ni )
    return;
 
    if ( idx >= oi )
    idx += ni - oi;
    else
    idx = ni;
}
#endif
 
void KoTextCursor::setDocument( KoTextDocument *d )
{
    doc = d;
    string = d->firstParag();
    idx = 0;
    tmpIndex = -1;
}
 
 
int KoTextCursor::x() const
{
    KoTextStringChar *c = string->at( idx );
    int curx = c->x;
    if ( c->rightToLeft )
        curx += c->width; //string->string()->width( idx );
    return curx;
}
 
int KoTextCursor::y() const
{
    int dummy, line;
    string->lineStartOfChar( idx, &dummy, &line );
    return string->lineY( line );
}
 
 
void KoTextCursor::fixCursorPosition()
{
    // searches for the closest valid cursor position
    if ( string->string()->validCursorPosition( idx ) )
    return;
 
    int lineIdx;
    KoTextStringChar *start = string->lineStartOfChar( idx, &lineIdx, 0 );
    int x = string->string()->at( idx ).x;
    int diff = TQABS(start->x - x);
    int best = lineIdx;
 
    KoTextStringChar *c = start;
    ++c;
 
    KoTextStringChar *end = &string->string()->at( string->length()-1 );
    while ( c <= end && !c->lineStart ) {
    int xp = c->x;
    if ( c->rightToLeft )
        xp += c->pixelwidth; //string->string()->width( lineIdx + (c-start) );
    int ndiff = TQABS(xp - x);
    if ( ndiff < diff && string->string()->validCursorPosition(lineIdx + (c-start)) ) {
        diff = ndiff;
        best = lineIdx + (c-start);
    }
    ++c;
    }
    idx = best;
}
 
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
KoTextString::KoTextString()
{
    bidiDirty = true;
    bNeedsSpellCheck = true;
    bidi = false;
    rightToLeft = false;
    dir = TQChar::DirON;
}
 
KoTextString::KoTextString( const KoTextString &s )
{
    bidiDirty = s.bidiDirty;
    bNeedsSpellCheck = s.bNeedsSpellCheck;
    bidi = s.bidi;
    rightToLeft = s.rightToLeft;
    dir = s.dir;
    data = s.data;
    data.detach();
    for ( int i = 0; i < (int)data.size(); ++i ) {
        KoTextFormat *f = data[i].format();
        if ( f )
            f->addRef();
    }
}
 
void KoTextString::insert( int index, const TQString &s, KoTextFormat *f )
{
    int os = data.size();
    data.resize( data.size() + s.length() );
    if ( index < os ) {
    memmove( data.data() + index + s.length(), data.data() + index,
         sizeof( KoTextStringChar ) * ( os - index ) );
    }
    for ( int i = 0; i < (int)s.length(); ++i ) {
    KoTextStringChar &ch = data[ (int)index + i ];
    ch.x = 0;
    ch.pixelxadj = 0;
    ch.pixelwidth = 0;
    ch.width = 0;
    ch.lineStart = 0;
    ch.d.format = 0;
    ch.type = KoTextStringChar::Regular;
    ch.rightToLeft = 0;
    ch.startOfRun = 0;
        ch.c = s[ i ];
#ifdef DEBUG_COLLECTION
    kdDebug(32500) << "KoTextString::insert setting format " << f << " to character " << (int)index+i << endl;
#endif
    ch.setFormat( f );
    }
    bidiDirty = true;
    bNeedsSpellCheck = true;
}
 
KoTextString::~KoTextString()
{
    clear();
}
 
void KoTextString::insert( int index, KoTextStringChar *c )
{
    int os = data.size();
    data.resize( data.size() + 1 );
    if ( index < os ) {
    memmove( data.data() + index + 1, data.data() + index,
         sizeof( KoTextStringChar ) * ( os - index ) );
    }
    KoTextStringChar &ch = data[ (int)index ];
    ch.c = c->c;
    ch.x = 0;
    ch.pixelxadj = 0;
    ch.pixelwidth = 0;
    ch.width = 0;
    ch.lineStart = 0;
    ch.rightToLeft = 0;
    ch.d.format = 0;
    ch.type = KoTextStringChar::Regular;
    ch.setFormat( c->format() );
    bidiDirty = true;
    bNeedsSpellCheck = true;
}
 
void KoTextString::truncate( int index )
{
    index = TQMAX( index, 0 );
    index = TQMIN( index, (int)data.size() - 1 );
    if ( index < (int)data.size() ) {
    for ( int i = index + 1; i < (int)data.size(); ++i ) {
        KoTextStringChar &ch = data[ i ];
        if ( ch.isCustom() ) {
        delete ch.customItem();
        if ( ch.d.custom->format )
            ch.d.custom->format->removeRef();
        delete ch.d.custom;
        ch.d.custom = 0;
        } else if ( ch.format() ) {
        ch.format()->removeRef();
        }
    }
    }
    data.truncate( index );
    bidiDirty = true;
    bNeedsSpellCheck = true;
}
 
void KoTextString::remove( int index, int len )
{
    for ( int i = index; i < (int)data.size() && i - index < len; ++i ) {
    KoTextStringChar &ch = data[ i ];
    if ( ch.isCustom() ) {
        delete ch.customItem();
        if ( ch.d.custom->format )
        ch.d.custom->format->removeRef();
            delete ch.d.custom;
        ch.d.custom = 0;
    } else if ( ch.format() ) {
        ch.format()->removeRef();
    }
    }
    memmove( data.data() + index, data.data() + index + len,
         sizeof( KoTextStringChar ) * ( data.size() - index - len ) );
    data.resize( data.size() - len, TQGArray::SpeedOptim );
    bidiDirty = true;
    bNeedsSpellCheck = true;
}
 
void KoTextString::clear()
{
    for ( int i = 0; i < (int)data.count(); ++i ) {
    KoTextStringChar &ch = data[ i ];
    if ( ch.isCustom() ) {
            // Can't do that here, no access to the doc. See ~KoTextParag instead.
            // However clear() is also called by operator=, many times in kotextobject.cpp...
            // Hopefully not with customitems in there...
            //if ( doc )
            //    doc->unregisterCustomItem( ch->customItem(), this );
 
        delete ch.customItem();
        if ( ch.d.custom->format )
        ch.d.custom->format->removeRef();
        delete ch.d.custom;
        ch.d.custom = 0;
 
    } else if ( ch.format() ) {
        ch.format()->removeRef();
    }
    }
    data.resize( 0 );
}
 
void KoTextString::setFormat( int index, KoTextFormat *f, bool useCollection, bool setFormatAgain )
{
    KoTextStringChar &ch = data[ index ];
//    kdDebug(32500) << "KoTextString::setFormat index=" << index << " f=" << f << endl;
    if ( useCollection && ch.format() )
    {
    //kdDebug(32500) << "KoTextString::setFormat removing ref on old format " << ch.format() << endl;
    ch.format()->removeRef();
    }
    ch.setFormat( f, setFormatAgain );
}
 
void KoTextString::checkBidi() const
{
    KoTextString *that = (KoTextString *)this;
    that->bidiDirty = false;
    int length = data.size();
    if ( !length ) {
        that->bidi = false;
        that->rightToLeft = dir == TQChar::DirR;
        return;
    }
    const KoTextStringChar *start = data.data();
    const KoTextStringChar *end = start + length;
 
    // determines the properties we need for layouting
    TQTextEngine textEngine( toString(), 0 );
    textEngine.direction = (TQChar::Direction) dir;
    textEngine.itemize(TQTextEngine::SingleLine);
    const TQCharAttributes *ca = textEngine.attributes() + length-1;
    KoTextStringChar *ch = (KoTextStringChar *)end - 1;
    TQScriptItem *item = &textEngine.items[textEngine.items.size()-1];
    unsigned char bidiLevel = item->analysis.bidiLevel;
    if ( bidiLevel )
        that->bidi = true;
    int pos = length-1;
    while ( ch >= start ) {
        if ( item->position > pos ) {
            --item;
            Q_ASSERT( item >= &textEngine.items[0] );
            Q_ASSERT( item < &textEngine.items[textEngine.items.size()] );
            bidiLevel = item->analysis.bidiLevel;
            if ( bidiLevel )
                that->bidi = true;
        }
        ch->softBreak = ca->softBreak;
        ch->whiteSpace = ca->whiteSpace;
        ch->charStop = ca->charStop;
        ch->wordStop = ca->wordStop;
        //ch->bidiLevel = bidiLevel;
        ch->rightToLeft = (bidiLevel%2);
        --ch;
        --ca;
        --pos;
    }
 
    if ( dir == TQChar::DirR ) {
        that->bidi = true;
        that->rightToLeft = true;
    } else if ( dir == TQChar::DirL ) {
        that->rightToLeft = false;
    } else {
    that->rightToLeft = (textEngine.direction == TQChar::DirR);
    }
}
 
TQMemArray<KoTextStringChar> KoTextString::subString( int start, int len ) const
{
    if ( len == 0xFFFFFF )
    len = data.size();
    TQMemArray<KoTextStringChar> a;
    a.resize( len );
    for ( int i = 0; i < len; ++i ) {
    KoTextStringChar *c = &data[ i + start ];
    a[ i ].c = c->c;
    a[ i ].x = 0;
    a[ i ].pixelxadj = 0;
    a[ i ].pixelwidth = 0;
    a[ i ].width = 0;
    a[ i ].lineStart = 0;
    a[ i ].rightToLeft = 0;
    a[ i ].d.format = 0;
    a[ i ].type = KoTextStringChar::Regular;
    a[ i ].setFormat( c->format() );
    if ( c->format() )
        c->format()->addRef();
    }
    return a;
}
 
TQString KoTextString::mid( int start, int len ) const
{
    if ( len == 0xFFFFFF )
    len = data.size();
    TQString res;
    res.setLength( len );
    for ( int i = 0; i < len; ++i ) {
    KoTextStringChar *c = &data[ i + start ];
    res[ i ] = c->c;
    }
    return res;
}
 
TQString KoTextString::toString( const TQMemArray<KoTextStringChar> &data )
{
    TQString s;
    int l = data.size();
    s.setUnicode( 0, l );
    KoTextStringChar *c = data.data();
    TQChar *uc = (TQChar *)s.unicode();
    while ( l-- ) {
    *uc = c->c;
    uc++;
    c++;
    }
 
    return s;
}
 
TQString KoTextString::toReverseString() const
{
    TQString s;
    int l = length();
    s.setUnicode(0, l);
    KoTextStringChar *c = data.data() + (l-1);
    TQChar *uc = (TQChar *)s.unicode();
    while ( l-- ) {
    *uc = c->c;
    uc++;
    c--;
    }
 
    return s;
}
 
TQString KoTextString::stringToSpellCheck()
{
    if ( !bNeedsSpellCheck )
        return TQString();
 
    bNeedsSpellCheck = false;
    if ( length() <= 1 )
        return TQString();
 
    TQString str = toString();
    str.truncate( str.length() - 1 ); // remove trailing space
    return str;
}
 
int KoTextString::nextCursorPosition( int next )
{
    if ( bidiDirty )
        checkBidi();
 
    const KoTextStringChar *c = data.data();
    int len = length();
 
    if ( next < len - 1 ) {
        next++;
        while ( next < len - 1 && !c[next].charStop )
            next++;
    }
    return next;
}
 
int KoTextString::previousCursorPosition( int prev )
{
    if ( bidiDirty )
        checkBidi();
 
    const KoTextStringChar *c = data.data();
 
    if ( prev ) {
        prev--;
        while ( prev && !c[prev].charStop )
            prev--;
    }
    return prev;
}
 
bool KoTextString::validCursorPosition( int idx )
{
    if ( bidiDirty )
        checkBidi();
 
    return (at( idx ).charStop);
}
 
 
void KoTextStringChar::setFormat( KoTextFormat *f, bool setFormatAgain )
{
    if ( type == Regular ) {
    d.format = f;
    } else {
    if ( !d.custom ) {
        d.custom = new CustomData;
        d.custom->custom = 0;
    }
    d.custom->format = f;
        if ( d.custom->custom && setFormatAgain )
            d.custom->custom->setFormat( f );
    }
}
 
void KoTextStringChar::setCustomItem( KoTextCustomItem *i )
{
    if ( type == Regular ) {
    KoTextFormat *f = format();
    d.custom = new CustomData;
    d.custom->format = f;
    type = Custom;
    } else {
    delete d.custom->custom;
    }
    d.custom->custom = i;
}
 
void KoTextStringChar::loseCustomItem() // setRegular() might be a better name
{
    if ( isCustom() ) {
    KoTextFormat *f = d.custom->format;
    d.custom->custom = 0;
    delete d.custom;
    type = Regular;
    d.format = f;
    }
}
 
KoTextStringChar::~KoTextStringChar()
{
    if ( format() )
    format()->removeRef();
    switch ( type ) {
    case Custom:
        delete d.custom; break;
    default:
        break;
    }
}
 
int KoTextStringChar::height() const
{
    return !isCustom() ? format()->height() : ( customItem()->placement() == KoTextCustomItem::PlaceInline ? customItem()->height : 0 );
}
 
int KoTextStringChar::ascent() const
{
    return !isCustom() ? format()->ascent() : ( customItem()->placement() == KoTextCustomItem::PlaceInline ? customItem()->ascent() : 0 );
}
 
int KoTextStringChar::descent() const
{
    return !isCustom() ? format()->descent() : 0;
}
 
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
KoTextFormatterBase::KoTextFormatterBase()
    : wrapColumn( -1 ), //wrapEnabled( true ),
      m_bViewFormattingChars( false ),
      biw( true /*default in kotext*/ )
{
}
 
#ifdef BIDI_DEBUG
#include <iostream>
#endif
 
// collects one line of the paragraph and transforms it to visual order
KoTextParagLineStart *KoTextFormatterBase::bidiReorderLine( KoTextParag * /*parag*/, KoTextString *text, KoTextParagLineStart *line,
                            KoTextStringChar *startChar, KoTextStringChar *lastChar, int align, int space )
{
    int start = (startChar - &text->at(0));
    int last = (lastChar - &text->at(0) );
    //kdDebug(32500) << "doing BiDi reordering from " << start << " to " << last << "!" << endl;
 
    KoBidiControl *control = new KoBidiControl( line->context(), line->status );
    TQString str;
    str.setUnicode( 0, last - start + 1 );
    // fill string with logically ordered chars.
    KoTextStringChar *ch = startChar;
    TQChar *qch = (TQChar *)str.unicode();
    while ( ch <= lastChar ) {
    *qch = ch->c;
    qch++;
    ch++;
    }
    int x = startChar->x;
 
    TQPtrList<KoTextRun> *runs;
    runs = KoComplexText::bidiReorderLine(control, str, 0, last - start + 1,
                     (text->isRightToLeft() ? TQChar::DirR : TQChar::DirL) );
 
    // now construct the reordered string out of the runs...
 
    int numSpaces = 0;
    // set the correct alignment. This is a bit messy....
    if( align == TQt::AlignAuto ) {
    // align according to directionality of the paragraph...
    if ( text->isRightToLeft() )
        align = TQt::AlignRight;
    }
 
    if ( align & TQt::AlignHCenter )
    x += space/2;
    else if ( align & TQt::AlignRight )
    x += space;
    else if ( align & TQt::AlignJustify ) {
    for ( int j = start; j < last; ++j ) {
        if( isBreakable( text, j ) ) {
        numSpaces++;
        }
    }
    }
    int toAdd = 0;
    bool first = true;
    KoTextRun *r = runs->first();
    int xmax = -0xffffff;
    while ( r ) {
    if(r->level %2) {
        // odd level, need to reverse the string
        int pos = r->stop + start;
        while(pos >= r->start + start) {
        KoTextStringChar *c = &text->at(pos);
        if( numSpaces && !first && isBreakable( text, pos ) ) {
            int s = space / numSpaces;
            toAdd += s;
            space -= s;
            numSpaces--;
        } else if ( first ) {
            first = false;
            if ( c->c == ' ' )
            x -= c->format()->width( ' ' );
        }
        c->x = x + toAdd;
        c->rightToLeft = true;
        c->startOfRun = false;
        int ww = 0;
        if ( c->c.unicode() >= 32 || c->c == '\t' || c->c == '\n' || c->isCustom() ) {
            ww = c->width;
        } else {
            ww = c->format()->width( ' ' );
        }
        if ( xmax < x + toAdd + ww ) xmax = x + toAdd + ww;
        x += ww;
        pos--;
        }
    } else {
        int pos = r->start + start;
        while(pos <= r->stop + start) {
        KoTextStringChar* c = &text->at(pos);
        if( numSpaces && !first && isBreakable( text, pos ) ) {
            int s = space / numSpaces;
            toAdd += s;
            space -= s;
            numSpaces--;
        } else if ( first ) {
            first = false;
            if ( c->c == ' ' )
            x -= c->format()->width( ' ' );
        }
        c->x = x + toAdd;
        c->rightToLeft = false;
        c->startOfRun = false;
        int ww = 0;
        if ( c->c.unicode() >= 32 || c->c == '\t' || c->isCustom() ) {
            ww = c->width;
        } else {
            ww = c->format()->width( ' ' );
        }
        //kdDebug(32500) << "setting char " << pos << " at pos " << x << endl;
        if ( xmax < x + toAdd + ww ) xmax = x + toAdd + ww;
        x += ww;
        pos++;
        }
    }
    text->at( r->start + start ).startOfRun = true;
    r = runs->next();
    }
 
    line->w = xmax + 10;
    KoTextParagLineStart *ls = new KoTextParagLineStart( control->context, control->status );
    delete control;
    delete runs;
    return ls;
}
 
bool KoTextFormatterBase::isStretchable( KoTextString *string, int pos ) const
{
    if ( string->at( pos ).c == TQChar(160) ) //non-breaking space
    return true;
    KoTextStringChar& chr = string->at( pos );
    return chr.whiteSpace;
    //return isBreakable( string, pos );
}
 
bool KoTextFormatterBase::isBreakable( KoTextString *string, int pos ) const
{
    //if (string->at(pos).nobreak)
    //    return false;
    return (pos < string->length()-1 && string->at(pos+1).softBreak);
}
 
void KoTextParag::insertLineStart( int index, KoTextParagLineStart *ls )
{
    // This tests if we break at the same character in more than one line,
    // i.e. there no space even for _one_ char in a given line.
    // However this shouldn't happen, KoTextFormatter prevents it, otherwise
    // we could loop forever (e.g. if one char is wider than the page...)
#ifndef NDEBUG
    TQMap<int, KoTextParagLineStart*>::Iterator it;
    if ( ( it = lineStarts.find( index ) ) == lineStarts.end() ) {
    lineStarts.insert( index, ls );
    } else {
        kdWarning(32500) << "insertLineStart: there's already a line for char index=" << index << endl;
    delete *it;
    lineStarts.remove( it );
    lineStarts.insert( index, ls );
    }
#else // non-debug code, take the fast route
    lineStarts.insert( index, ls );
#endif
}
 
 
/* Standard pagebreak algorithm using KoTextFlow::adjustFlow. Returns
 the shift of the paragraphs bottom line.
 */
int KoTextFormatterBase::formatVertically( KoTextDocument* doc, KoTextParag* parag )
{
    int oldHeight = parag->rect().height();
    TQMap<int, KoTextParagLineStart*>& lineStarts = parag->lineStartList();
    TQMap<int, KoTextParagLineStart*>::Iterator it = lineStarts.begin();
    int h = doc->addMargins() ? parag->topMargin() : 0;
    for ( ; it != lineStarts.end() ; ++it  ) {
    KoTextParagLineStart * ls = it.data();
    ls->y = h;
    KoTextStringChar *c = &parag->string()->at(it.key());
    if ( c && c->customItem() && c->customItem()->ownLine() ) {
        int h = c->customItem()->height;
        c->customItem()->pageBreak( parag->rect().y() + ls->y + ls->baseLine - h, doc->flow() );
        int delta = c->customItem()->height - h;
        ls->h += delta;
        if ( delta )
        parag->setMovedDown( true );
    } else {
        int shift = doc->flow()->adjustFlow( parag->rect().y() + ls->y, ls->w, ls->h );
        ls->y += shift;
        if ( shift )
        parag->setMovedDown( true );
    }
    h = ls->y + ls->h;
    }
    int m = parag->bottomMargin();
    if ( parag->next() && doc && !doc->addMargins() )
    m = TQMAX( m, parag->next()->topMargin() );
    //if ( parag->next() && parag->next()->isLineBreak() )
    //  m = 0;
    h += m;
    parag->setHeight( h );
    return h - oldHeight;
}
 
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
KoTextCustomItem::KoTextCustomItem( KoTextDocument *p )
      :  width(-1), height(0), parent(p), xpos(0), ypos(-1), parag(0)
{
    m_deleted = false; // added for kotext
}
 
KoTextCustomItem::~KoTextCustomItem()
{
}
 
KoTextFlow::KoTextFlow()
{
    w = 0;
    leftItems.setAutoDelete( false );
    rightItems.setAutoDelete( false );
}
 
KoTextFlow::~KoTextFlow()
{
}
 
void KoTextFlow::clear()
{
    leftItems.clear();
    rightItems.clear();
}
 
// Called by KoTextDocument::setWidth
void KoTextFlow::setWidth( int width )
{
    w = width;
}
 
void KoTextFlow::adjustMargins( int, int, int, int&, int&, int& pageWidth, KoTextParag* )
{
    pageWidth = w;
}
 
 
int KoTextFlow::adjustFlow( int /*y*/, int, int /*h*/ )
{
    return 0;
}
 
void KoTextFlow::unregisterFloatingItem( KoTextCustomItem* item )
{
    leftItems.removeRef( item );
    rightItems.removeRef( item );
}
 
void KoTextFlow::registerFloatingItem( KoTextCustomItem* item )
{
    if ( item->placement() == KoTextCustomItem::PlaceRight ) {
    if ( !rightItems.contains( item ) )
        rightItems.append( item );
    } else if ( item->placement() == KoTextCustomItem::PlaceLeft &&
        !leftItems.contains( item ) ) {
    leftItems.append( item );
    }
}
 
int KoTextFlow::availableHeight() const
{
    return -1; // no limit
}
 
void KoTextFlow::drawFloatingItems( TQPainter* p, int cx, int cy, int cw, int ch, const TQColorGroup& cg, bool selected )
{
    KoTextCustomItem *item;
    for ( item = leftItems.first(); item; item = leftItems.next() ) {
    if ( item->x() == -1 || item->y() == -1 )
        continue;
    item->draw( p, item->x(), item->y(), cx, cy, cw, ch, cg, selected );
    }
 
    for ( item = rightItems.first(); item; item = rightItems.next() ) {
    if ( item->x() == -1 || item->y() == -1 )
        continue;
    item->draw( p, item->x(), item->y(), cx, cy, cw, ch, cg, selected );
    }
}
 
//void KoTextFlow::setPageSize( int ps ) { pagesize = ps; }
bool KoTextFlow::isEmpty() { return leftItems.isEmpty() && rightItems.isEmpty(); }