1 files changed, 316 insertions, 0 deletions
diff --git a/karbon/shapes/vellipse.cpp b/karbon/shapes/vellipse.cpp
new file mode 100644
index 000000000..1a9462b81
--- /dev/null
+++ b/karbon/shapes/vellipse.cpp
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+/* This file is part of the KDE project
+   Copyright (C) 2001, 2002, 2003 The Karbon Developers
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+
+#include "vellipse.h"
+#include "vtransformcmd.h"
+#include <tdelocale.h>
+#include <KoUnit.h>
+#include <KoStore.h>
+#include <KoXmlWriter.h>
+#include <KoXmlNS.h>
+#include <vglobal.h>
+#include <vdocument.h>
+#include <tqdom.h>
+#include <core/vfill.h>
+
+VEllipse::VEllipse( VObject* parent, VState state ) : VPath( parent, state )
+{
+}
+
+VEllipse::VEllipse( VObject* parent,
+		const KoPoint& topLeft, double width, double height,
+		VEllipseType type, double startAngle, double endAngle )
+	: VPath( parent ), m_type( type ), m_startAngle( startAngle ), m_endAngle( endAngle )
+{
+	setDrawCenterNode();
+
+	m_rx = width / 2.0;
+	m_ry = height / 2.0;
+	m_center.setX( topLeft.x() + m_rx );
+	m_center.setY( topLeft.y() + m_ry );
+
+	init();
+}
+
+void
+VEllipse::init()
+{
+	// to radials
+	int nsegs;
+	if( m_startAngle < m_endAngle )
+	    nsegs = int( floor( ( m_endAngle - m_startAngle ) / 90.0 ) );
+	else
+	    nsegs = 4 - int( ceil( ( m_startAngle - m_endAngle ) / 90.0 ) );
+	double startAngle = m_startAngle - 90.0;
+	if( startAngle < 0 ) startAngle += 360.0;
+	startAngle = VGlobal::pi_2 * ( startAngle / 90.0 );
+	double endAngle   = m_endAngle - 90.0;
+	if( endAngle < 0 ) endAngle += 360.0;
+	endAngle   = VGlobal::pi_2 * ( endAngle / 90.0 );
+	// Create (half-)unity circle with topLeft at (0|0):
+	double currentAngle = -startAngle - VGlobal::pi_2;
+	KoPoint start( 0.5 * sin( -startAngle ), 0.5 * cos( -startAngle ) );
+	moveTo( KoPoint( start.x(), start.y() ) );
+	double midAngle = currentAngle + VGlobal::pi_2 / 2.0;
+	double midAmount = 0.5 / sin( VGlobal::pi_2 / 2.0 );
+	for( int i = 0;i < nsegs;i++ )
+	{
+		midAngle -= VGlobal::pi_2;
+		arcTo( KoPoint( cos( midAngle ) * midAmount, -sin( midAngle ) * midAmount ),
+						KoPoint( 0.5 * sin( currentAngle ), 0.5 * cos( currentAngle ) ), 0.5 );
+		currentAngle -= VGlobal::pi_2;
+	}
+	double rest = ( -endAngle - VGlobal::pi_2 - currentAngle ) * 90.0 / VGlobal::pi_2;
+	if( rest > 0 )
+		rest -= 360.0;
+	if( rest != 0 )
+	{
+		midAngle = currentAngle - ( -rest / 360.0 ) * VGlobal::pi;
+		midAmount = 0.5 / cos( currentAngle - midAngle );
+		KoPoint end( 0.5 * sin( -endAngle ), 0.5 * cos( -endAngle ) );
+		arcTo( KoPoint( cos( midAngle ) * midAmount, -sin( midAngle ) * midAmount ),
+				KoPoint( 0.5 * sin( -endAngle ), 0.5 * cos( -endAngle ) ), 0.5 );
+	}
+	if( m_type == cut )
+		lineTo( KoPoint( 0.0, 0.0 ) );
+	if( m_type != arc )
+		close();
+
+	// Translate and scale:
+	TQWMatrix m;
+	m.translate( m_center.x(), m_center.y() );
+	m.scale( 2.0 * m_rx, 2.0 * m_ry );
+
+	// only tranform the path data
+	VTransformCmd cmd( 0L, m );
+	cmd.VVisitor::visitVPath( *this );
+
+	m_matrix.reset();
+}
+
+TQString
+VEllipse::name() const
+{
+	TQString result = VObject::name();
+	return !result.isEmpty() ? result : i18n( "Ellipse" );
+}
+
+void
+VEllipse::save( TQDomElement& element ) const
+{
+	VDocument *doc = document();
+	if( doc && doc->saveAsPath() )
+	{
+		VPath::save( element );
+		return;
+	}
+
+	if( state() != deleted )
+	{
+		TQDomElement me = element.ownerDocument().createElement( "ELLIPSE" );
+		element.appendChild( me );
+
+		// save fill/stroke untransformed
+		VPath path( *this );
+		VTransformCmd cmd( 0L, m_matrix.invert() );
+		cmd.visit( path );
+		path.VObject::save( me );
+		//VObject::save( me );
+		
+		me.setAttribute( "cx", m_center.x() );
+		me.setAttribute( "cy", m_center.y() );
+
+		me.setAttribute( "rx", m_rx );
+		me.setAttribute( "ry", m_ry );
+
+		me.setAttribute( "start-angle", m_startAngle );
+		me.setAttribute( "end-angle", m_endAngle );
+
+		if( m_type == cut )
+			me.setAttribute( "kind", "cut" );
+		else if( m_type == section )
+			me.setAttribute( "kind", "section" );
+		else if( m_type == arc )
+			me.setAttribute( "kind", "arc" );
+		else
+			me.setAttribute( "kind", "full" );
+
+		TQString transform = buildSvgTransform();
+		if( !transform.isEmpty() )
+			me.setAttribute( "transform", transform );
+	}
+}
+
+void
+VEllipse::saveOasis( KoStore *store, KoXmlWriter *docWriter, KoGenStyles &mainStyles, int &index ) const
+{
+	// do not save deleted objects
+	if( state() == deleted )
+		return;
+
+	docWriter->startElement( "draw:ellipse" );
+
+	//save all into pt
+	docWriter->addAttributePt( "svg:cx", m_center.x() );
+	docWriter->addAttributePt( "svg:cy", m_center.y() );
+	docWriter->addAttributePt( "svg:rx", m_rx );
+	docWriter->addAttributePt( "svg:ry", m_ry );
+
+	if( m_type == full )
+		docWriter->addAttribute( "draw:kind", "full" );
+	else
+	{
+		// the meaning of cut and section is mixed up in karbon, so just set them so for now
+		// be sure to do the right thing tm for karbon 2.0
+		if( m_type == section )
+			docWriter->addAttribute( "draw:kind", "cut" );
+		else if( m_type == cut )
+			docWriter->addAttribute( "draw:kind", "section" );
+		else
+			docWriter->addAttribute( "draw:kind", "arc" );
+
+		docWriter->addAttribute( "draw:start-angle", m_startAngle );
+		docWriter->addAttribute( "draw:end-angle", m_endAngle );
+	}
+
+	VObject::saveOasis( store, docWriter, mainStyles, index );
+
+	TQWMatrix tmpMat;
+	tmpMat.scale( 1, -1 );
+	tmpMat.translate( 0, -document()->height() );
+	
+	TQString transform = buildOasisTransform( m_matrix*tmpMat );
+	if( !transform.isEmpty() )
+		docWriter->addAttribute( "draw:transform", transform );
+
+	docWriter->endElement();
+}
+
+bool
+VEllipse::loadOasis( const TQDomElement &element, KoOasisLoadingContext &context )
+{
+	setState( normal );
+
+	if( element.tagName() == "ellipse" )
+	{
+		if( element.hasAttributeNS( KoXmlNS::svg, "rx" ) )
+			m_rx = KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "rx", TQString() ) );
+		else 
+			m_rx = 0.5 * KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "width", TQString() ) );
+
+		if( element.hasAttributeNS( KoXmlNS::svg, "ry" ) )
+			m_ry = KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "ry", TQString() ) );
+		else 
+			m_ry = 0.5 * KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "height", TQString() ) );
+
+	}
+	else if( element.tagName() == "circle" )
+	{
+		if( element.hasAttributeNS( KoXmlNS::svg, "r" ) )
+			m_rx = m_ry = KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "r", TQString() ) );
+		else 
+			m_rx = m_ry = 0.5 * KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "width", TQString() ) );
+	}
+
+	if( element.hasAttributeNS( KoXmlNS::svg, "cx" ) )
+		m_center.setX( KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "cx", TQString() ) ) );
+	else
+		m_center.setX( m_rx + KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "x", TQString() ) ) );
+
+	if( element.hasAttributeNS( KoXmlNS::svg, "cy" ) )
+		m_center.setY( KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "cy", TQString() ) ) );
+	else
+		m_center.setY( m_ry + KoUnit::parseValue( element.attributeNS( KoXmlNS::svg, "y", TQString() ) ) );
+
+	// the meaning of cut and section is mixed up in karbon, so just set them so for now
+	// be sure to do the right thing tm for karbon 2.0
+	TQString kind = element.attributeNS( KoXmlNS::draw, "kind", TQString() );
+	if( kind == "cut" )
+		m_type = section;
+	else if( kind == "section" )
+		m_type = cut;
+	else if( kind == "arc" )
+		m_type = arc;
+	else
+		m_type = full;
+
+	double startAngle = element.attributeNS( KoXmlNS::draw, "start-angle", TQString() ).toDouble();
+	double endAngle = element.attributeNS( KoXmlNS::draw, "end-angle", TQString() ).toDouble();
+	
+	// the shape gets mirrored in y-direction, so make the angles temporary clockwise 
+	// just for creating the path
+	m_startAngle = 360.0 - endAngle;
+	m_endAngle = 360.0 - startAngle;
+	
+	init();
+
+	// now set the right angles
+	m_startAngle = startAngle;
+	m_endAngle = endAngle;
+	
+	transformByViewbox( element, element.attributeNS( KoXmlNS::svg, "viewBox", TQString() ) );
+
+	TQString trafo = element.attributeNS( KoXmlNS::draw, "transform", TQString() );
+	if( !trafo.isEmpty() )
+		transformOasis( trafo );
+
+	return VObject::loadOasis( element, context );
+}
+
+void
+VEllipse::load( const TQDomElement& element )
+{
+	setState( normal );
+
+	TQDomNodeList list = element.childNodes();
+	for( uint i = 0; i < list.count(); ++i )
+		if( list.item( i ).isElement() )
+			VObject::load( list.item( i ).toElement() );
+
+	m_rx = KoUnit::parseValue( element.attribute( "rx" ) );
+	m_ry = KoUnit::parseValue( element.attribute( "ry" ) );
+
+	m_center.setX( KoUnit::parseValue( element.attribute( "cx" ) ) );
+	m_center.setY( KoUnit::parseValue( element.attribute( "cy" ) ) );
+
+	m_startAngle = element.attribute( "start-angle" ).toDouble();
+	m_endAngle = element.attribute( "end-angle" ).toDouble();
+
+	if( element.attribute( "kind" ) == "cut" )
+		m_type = cut;
+	else if( element.attribute( "kind" ) == "section" )
+		m_type = section;
+	else if( element.attribute( "kind" ) == "arc" )
+		m_type = arc;
+	else
+		m_type = full;
+
+	init();
+
+	TQString trafo = element.attribute( "transform" );
+	if( !trafo.isEmpty() )
+		transform( trafo );
+}
+
+VPath* 
+VEllipse::clone() const
+{
+	return new VEllipse( *this );
+}