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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 <qwmatrix.h>
#include "vglobal.h"
#include "vsinus.h"
#include "vtransformcmd.h"
#include <klocale.h>
#include <KoUnit.h>
#include <qdom.h>
#include <vdocument.h>
VSinus::VSinus( VObject* parent, VState state )
: VPath( parent, state )
{
}
VSinus::VSinus( VObject* parent,
const KoPoint& topLeft, double width, double height, uint periods )
: VPath( parent ), m_topLeft( topLeft ), m_width( width), m_height( height ), m_periods( periods )
{
// We want at least 1 period:
if( m_periods < 1 )
m_periods = 1;
init();
}
void
VSinus::init()
{
KoPoint p1;
KoPoint p2;
KoPoint p3( 0.0, 0.0 );
moveTo( p3 );
for ( uint i = 0; i < m_periods; ++i )
{
p1.setX( i + 1.0/24.0 );
p1.setY( ( 2.0 * VGlobal::sqrt2 - 1.0 ) * VGlobal::one_7 );
p2.setX( i + 1.0/12.0 );
p2.setY( ( 4.0 * VGlobal::sqrt2 - 2.0 ) * VGlobal::one_7 );
p3.setX( i + 1.0/8.0 );
p3.setY( VGlobal::sqrt2 * 0.5 );
curveTo( p1, p2, p3 );
p1.setX( i + 1.0/6.0 );
p1.setY( ( 3.0 * VGlobal::sqrt2 + 2.0 ) * VGlobal::one_7 );
p2.setX( i + 5.0/24.0 );
p2.setY( 1.0 );
p3.setX( i + 1.0/4.0 );
p3.setY( 1.0 );
curveTo( p1, p2, p3 );
p1.setX( i + 7.0/24.0 );
p1.setY( 1.0 );
p2.setX( i + 1.0/3.0 );
p2.setY( ( 3.0 * VGlobal::sqrt2 + 2.0 ) * VGlobal::one_7 );
p3.setX( i + 3.0/8.0 );
p3.setY( VGlobal::sqrt2 * 0.5 );
curveTo( p1, p2, p3 );
p1.setX( i + 5.0/12.0 );
p1.setY( ( 4.0 * VGlobal::sqrt2 - 2.0 ) * VGlobal::one_7 );
p2.setX( i + 11.0/24.0 );
p2.setY( ( 2.0 * VGlobal::sqrt2 - 1.0 ) * VGlobal::one_7 );
p3.setX( i + 1.0/2.0 );
p3.setY( 0.0 );
curveTo( p1, p2, p3 );
p1.setX( i + 13.0/24.0 );
p1.setY( -( 2.0 * VGlobal::sqrt2 - 1.0 ) * VGlobal::one_7 );
p2.setX( i + 7.0/12.0 );
p2.setY( -( 4.0 * VGlobal::sqrt2 - 2.0 ) * VGlobal::one_7 );
p3.setX( i + 5.0/8.0 );
p3.setY( -VGlobal::sqrt2 * 0.5 );
curveTo( p1, p2, p3 );
p1.setX( i + 2.0/3.0 );
p1.setY( -( 3.0 * VGlobal::sqrt2 + 2.0 ) * VGlobal::one_7 );
p2.setX( i + 17.0/24.0 );
p2.setY( -1.0 );
p3.setX( i + 3.0/4.0 );
p3.setY( -1.0 );
curveTo( p1, p2, p3 );
p1.setX( i + 19.0/24.0 );
p1.setY( -1.0 );
p2.setX( i + 5.0/6.0 );
p2.setY( -( 3.0 * VGlobal::sqrt2 + 2.0 ) * VGlobal::one_7 );
p3.setX( i + 7.0/8.0 );
p3.setY( -VGlobal::sqrt2 * 0.5 );
curveTo( p1, p2, p3 );
p1.setX( i + 11.0/12.0 );
p1.setY( -( 4.0 * VGlobal::sqrt2 - 2.0 ) * VGlobal::one_7 );
p2.setX( i + 23.0/24.0 );
p2.setY( -( 2.0 * VGlobal::sqrt2 - 1.0 ) * VGlobal::one_7 );
p3.setX( i + 1.0 );
p3.setY( 0.0 );
curveTo( p1, p2, p3 );
}
// Translate and scale:
QWMatrix m;
m.translate( m_topLeft.x(), m_topLeft.y() - m_height * 0.5 );
m.scale( m_width / m_periods, m_height * 0.5 );
// only tranform the path data
VTransformCmd cmd( 0L, m );
cmd.VVisitor::visitVPath( *this );
m_matrix.reset();
}
QString
VSinus::name() const
{
QString result = VObject::name();
return !result.isEmpty() ? result : i18n( "Sinus" );
}
void
VSinus::save( QDomElement& element ) const
{
VDocument *doc = document();
if( doc && doc->saveAsPath() )
{
VPath::save( element );
return;
}
if( state() != deleted )
{
QDomElement me = element.ownerDocument().createElement( "SINUS" );
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( "x", m_topLeft.x() );
me.setAttribute( "y", m_topLeft.y() );
me.setAttribute( "width", m_width );
me.setAttribute( "height", m_height );
me.setAttribute( "periods", m_periods );
QString transform = buildSvgTransform();
if( !transform.isEmpty() )
me.setAttribute( "transform", transform );
}
}
void
VSinus::load( const QDomElement& element )
{
setState( normal );
QDomNodeList list = element.childNodes();
for( uint i = 0; i < list.count(); ++i )
if( list.item( i ).isElement() )
VObject::load( list.item( i ).toElement() );
m_width = KoUnit::parseValue( element.attribute( "width" ), 10.0 );
m_height = KoUnit::parseValue( element.attribute( "height" ), 10.0 );
m_topLeft.setX( KoUnit::parseValue( element.attribute( "x" ) ) );
m_topLeft.setY( KoUnit::parseValue( element.attribute( "y" ) ) );
m_periods = element.attribute( "periods" ).toUInt();
init();
QString trafo = element.attribute( "transform" );
if( !trafo.isEmpty() )
transform( trafo );
}
VPath*
VSinus::clone() const
{
return new VSinus( *this );
}
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