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Diffstat (limited to 'kchart/kdchart/KDChartTextPiece.cpp')
| -rw-r--r-- | kchart/kdchart/KDChartTextPiece.cpp | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/kchart/kdchart/KDChartTextPiece.cpp b/kchart/kdchart/KDChartTextPiece.cpp new file mode 100644 index 000000000..2b451c2ef --- /dev/null +++ b/kchart/kdchart/KDChartTextPiece.cpp @@ -0,0 +1,292 @@ +/* -*- Mode: C++ -*- + 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 <qstylesheet.h> +#include <qsimplerichtext.h> +#include <qfontmetrics.h> +#include <qpainter.h> +#include <qapplication.h> +#include <qrect.h> + +KDChartTextPiece::KDChartTextPiece() + :QObject(0) +{ + _isRichText = false; + _richText = 0; + + _font = QApplication::font(); + // These three are needed for both + _metrics = new QFontMetrics( _font ); + _dirtyMetrics = true; + _text = QString(""); +} + + +KDChartTextPiece::KDChartTextPiece( const QString& text, const QFont& font ) + :QObject(0) +{ + if( QStyleSheet::mightBeRichText( text ) ) { + _isRichText = true; + _richText = new QSimpleRichText( text, font ); + _richText->adjustSize(); + } else { + _isRichText = false; + _richText = 0; + } + + // These three are needed for both + _metrics = new QFontMetrics( font ); + _dirtyMetrics = true; + _text = text; + _font = font; +} + + +KDChartTextPiece::KDChartTextPiece( QPainter *p, const QString& text, const QFont& font ) + :QObject(0) +{ + + if( QStyleSheet::mightBeRichText( text ) ) { + _isRichText = true; + _richText = new QSimpleRichText( text, font ); + //qDebug( "richtext width %s", QString::number(_richText->width()).latin1()); + //qDebug( "richtext height %s", QString::number(_richText->height()).latin1()); + _richText->adjustSize(); + //qDebug( "richtext width %s", QString::number(_richText->width()).latin1()); + //qDebug( "richtext height %s", QString::number(_richText->height()).latin1()); + + } else { + _isRichText = false; + _richText = 0; + } + + // These three are needed for both + _dirtyMetrics = (p == 0); + if( _dirtyMetrics ) { + _metrics = new QFontMetrics( font ); + //qDebug("dirty metrics text: %s", text.latin1()); + } + else{ + p->save(); + p->setFont( font ); + _metrics = new QFontMetrics( p->fontMetrics() ); + //qDebug ( "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 QSimpleRichText( source->_text, source->_font ); + _richText->adjustSize(); + } + else + _richText = 0; + + // used for both + if( _metrics ) + delete _metrics; + _metrics = new QFontMetrics( *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 ) { + //qDebug ("_richText height %s", QString::number(_richText->height()).latin1()); + return _richText->height(); + } + else { + + //qDebug ("_metrics height %s", QString::number(_metrics->height()).latin1()); + return _metrics->height(); + } +} + + +int KDChartTextPiece::fontLeading() const +{ + return _metrics->leading(); +} + +QRect KDChartTextPiece::rect( QPainter *p, const QRect& clipRect) const +{ + QRect rect( clipRect ); + QFont 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( QMIN( (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( QPainter *p, int x, int y, + const QRect& clipRect, + const QColor& color, + const QBrush* paper ) const +{ + + if( _isRichText ) { + + QColorGroup cg; + //calculate the text area before drawing + QRect txtArea = rect( p,clipRect); + cg.setColor( QColorGroup::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 QFontMetrics( p->fontMetrics() ); + meNotConst->_dirtyMetrics = false; + } + + p->drawText( x, y + _metrics->ascent(), _text ); + p->restore(); + } +} + + +void KDChartTextPiece::draw( QPainter *p, int x, int y, + const QRegion& clipRegion, + const QColor& color, + const QBrush* paper ) const +{ + if( _isRichText ) { + QColorGroup cg; + cg.setColor( QColorGroup::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 QFontMetrics( p->fontMetrics() ); + meNotConst->_dirtyMetrics = false; + } + + p->drawText( x, y + _metrics->ascent(), _text ); + p->restore(); + } +} + + +QString KDChartTextPiece::text() const +{ + return _text; +} + + +QFont KDChartTextPiece::font() const +{ + return _font; +} + + +bool KDChartTextPiece::isRichText() const +{ + return _isRichText; +} + + + +#include "KDChartTextPiece.moc" |