KDChartTextPiece.cpp

/*
   KDChart - a multi-platform charting engine
   */
 
/****************************************************************************
 ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB.  All rights reserved.
 **
 ** This file is part of the KDChart library.
 **
 ** 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 commercial KDChart licenses may use this file in
 ** accordance with the KDChart 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.klaralvdalens-datakonsult.se/?page=products for
 **   information about KDChart Commercial License Agreements.
 **
 ** Contact info@klaralvdalens-datakonsult.se if any conditions of this
 ** licensing are not clear to you.
 **
 **********************************************************************/
#include "KDChartTextPiece.h"
 
#include <tqstylesheet.h>
#include <tqsimplerichtext.h>
#include <tqfontmetrics.h>
#include <tqpainter.h>
#include <tqapplication.h>
#include <tqrect.h>
 
KDChartTextPiece::KDChartTextPiece()
    :TQObject(0)
{
    _isRichText = false;
    _richText = 0;
 
    _font = TQApplication::font();
    // These three are needed for both
    _metrics = new TQFontMetrics( _font );
    _dirtyMetrics = true;
    _text = TQString("");
}
 
 
KDChartTextPiece::KDChartTextPiece( const TQString& text, const TQFont& font )
    :TQObject(0)
{
    if( TQStyleSheet::mightBeRichText( text ) ) {
        _isRichText = true;
        _richText = new TQSimpleRichText( text, font );
        _richText->adjustSize();
    } else {
        _isRichText = false;
        _richText = 0;
    }
 
    // These three are needed for both
    _metrics = new TQFontMetrics( font );
    _dirtyMetrics = true;
    _text = text;
    _font = font;
}
 
 
KDChartTextPiece::KDChartTextPiece( TQPainter *p, const TQString& text, const TQFont& font )
    :TQObject(0)
{
 
    if( TQStyleSheet::mightBeRichText( text ) ) {
        _isRichText = true;
        _richText = new TQSimpleRichText( text, font );
        //tqDebug( "richtext width %s", TQString::number(_richText->width()).latin1());
    //tqDebug( "richtext height %s", TQString::number(_richText->height()).latin1());
        _richText->adjustSize();
        //tqDebug( "richtext width %s", TQString::number(_richText->width()).latin1());
    //tqDebug( "richtext height %s", TQString::number(_richText->height()).latin1());
 
    } else {
        _isRichText = false;
        _richText = 0;
    }
 
    // These three are needed for both
    _dirtyMetrics = (p == 0);
    if( _dirtyMetrics ) {
        _metrics = new TQFontMetrics( font );
        //tqDebug("dirty metrics text: %s", text.latin1());
    }
    else{
        p->save();
        p->setFont( font );
        _metrics = new TQFontMetrics( p->fontMetrics() );
        //tqDebug ( "drawing metrics text: %s", text.latin1() );
        //p->drawRect( _metrics->boundingRect( text) );
    //p->drawText( _metrics->boundingRect(text).bottomRight(), text);
        p->restore();
    }
    _text = text;
    _font = font;
}
 
 
void KDChartTextPiece::deepCopy( const KDChartTextPiece* source )
{
    if( !source || this == source )
        return;
    if( _richText )
        delete _richText;
    _isRichText = source->_isRichText;
    if( source->_richText ) {
        _richText = new TQSimpleRichText( source->_text, source->_font );
        _richText->adjustSize();
    }
    else
        _richText = 0;
 
    // used for both
    if( _metrics )
        delete _metrics;
    _metrics = new TQFontMetrics( *source->_metrics );
    _dirtyMetrics = source->_dirtyMetrics;
    _text = source->_text;
    _font = source->_font;
}
 
const KDChartTextPiece* KDChartTextPiece::clone() const
{
    KDChartTextPiece* newPiece = new KDChartTextPiece();
    newPiece->deepCopy( this );
    return newPiece;
}
 
 
KDChartTextPiece::~KDChartTextPiece()
{
    if( _richText )
        delete _richText;
    if( _metrics )
        delete _metrics;
}
 
 
int KDChartTextPiece::width() const
{
    if( _isRichText )
        return _richText->widthUsed();
    else
        return _metrics->width( _text );
}
 
 
int KDChartTextPiece::height() const
{
 
  if( _isRichText ) {
    //tqDebug ("_richText height %s", TQString::number(_richText->height()).latin1());
        return _richText->height();
  }
  else {
 
    //tqDebug ("_metrics height %s", TQString::number(_metrics->height()).latin1());
        return _metrics->height();
     }
}
 
 
int KDChartTextPiece::fontLeading() const
{
    return _metrics->leading();
}
 
TQRect KDChartTextPiece::rect( TQPainter *p, const TQRect& clipRect) const
{
    TQRect rect( clipRect );
    TQFont font( _font );
 
    if( _isRichText ) {
 
    // Pending Michel make sure the fonts are not too large
      if ( _richText->height() > clipRect.height() || _richText->width() > clipRect.width() )
    font.setPixelSize( TQMIN( (int)clipRect.width(),(int)clipRect.height() ) );
 
      _richText->setDefaultFont( font );
      _richText->setWidth( p, clipRect.width() );
      rect.setWidth( _richText->width() );
      rect.setHeight( _richText->height() );
    } else
      rect = clipRect;
 
    return rect;
}
 
void KDChartTextPiece::draw( TQPainter *p, int x, int y,
        const TQRect& clipRect,
        const TQColor& color,
        const TQBrush* paper ) const
{
 
  if( _isRichText ) {
 
    TQColorGroup cg;
    //calculate the text area before drawing
    TQRect txtArea = rect( p,clipRect);
    cg.setColor( TQColorGroup::Text, color );
    _richText->draw( p, txtArea.x(), txtArea.y(),txtArea , cg, paper );
  } else {
    p->save();
    p->setFont( _font );
    if( paper )
      p->setBrush( *paper );
    p->setPen( color );
    //dont clip to avoid truncated text
    //p->setClipRect( txtArea );
    if( _dirtyMetrics ){
      if( _metrics )
    delete _metrics;
      KDChartTextPiece* meNotConst = const_cast<KDChartTextPiece*>(this);
      //KDChartTextPiece* meNotConst(const_cast<KDChartTextPiece*>(this));
      meNotConst->_metrics = new TQFontMetrics( p->fontMetrics() );
      meNotConst->_dirtyMetrics = false;
    }
 
    p->drawText( x, y + _metrics->ascent(), _text );
    p->restore();
    }
}
 
 
void KDChartTextPiece::draw( TQPainter *p, int x, int y,
        const TQRegion& clipRegion,
        const TQColor& color,
        const TQBrush* paper ) const
{
    if( _isRichText ) {
        TQColorGroup cg;
        cg.setColor( TQColorGroup::Text, color );
        _richText->setDefaultFont( _font );
        _richText->setWidth( p, clipRegion.boundingRect().width() );
        _richText->draw( p, x, y, clipRegion, cg, paper );
    } else {
        p->save();
        p->setFont( _font );
        if( paper )
            p->setBrush( *paper );
        p->setPen( color );
        p->setClipRegion( clipRegion );
 
        if( _dirtyMetrics ){
            if( _metrics )
                delete _metrics;
 
            // this line does not compile with MSVC++:
            // KDChartTextPiece* meNotConst( const_cast<KDChartTextPiece*>(this) );
            KDChartTextPiece* meNotConst = const_cast<KDChartTextPiece*>(this);
 
            meNotConst->_metrics = new TQFontMetrics( p->fontMetrics() );
            meNotConst->_dirtyMetrics = false;
        }
 
        p->drawText( x, y + _metrics->ascent(), _text );
        p->restore();
    }
}
 
 
TQString KDChartTextPiece::text() const
{
    return _text;
}
 
 
TQFont KDChartTextPiece::font() const
{
    return _font;
}
 
 
bool KDChartTextPiece::isRichText() const
{
    return _isRichText;
}
 
 
 
#include "KDChartTextPiece.moc"