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koffice/kpresenter/KPrBezierCurveObject.cpp

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// -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4; -*-
/* This file is part of the KDE project
Copyright (C) 2001 Toshitaka Fujioka <fujioka@kde.org>
Copyright (C) 2005-2006 Thorsten Zachmann <zachmann@kde.org>
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 "KPrBezierCurveObject.h"
#include "KPrCubicBezierCurveObjectIface.h"
#include "KPrQuadricBezierCurveObjectIface.h"
#include "KPrUtils.h"
#include <KoTextZoomHandler.h>
#include <qpainter.h>
#include <qwmatrix.h>
#include <qdom.h>
#include "KoPointArray.h"
#include <kdebug.h>
#include <math.h>
using namespace std;
KPrBezierCurveObject::KPrBezierCurveObject()
: KPrPointObject()
{
}
KPrBezierCurveObject::KPrBezierCurveObject( const KoPointArray &_controlPoints,
const KoPointArray &_allPoints,
const KoSize &_size, const KoPen &_pen,
LineEnd _lineBegin, LineEnd _lineEnd )
: KPrPointObject( _pen, _lineBegin, _lineEnd )
{
points = KoPointArray( _controlPoints );
allPoints = KoPointArray( _allPoints );
ext = _size;
}
KPrBezierCurveObject &KPrBezierCurveObject::operator=( const KPrBezierCurveObject & )
{
return *this;
}
bool KPrBezierCurveObject::saveOasisObjectAttributes( KPOasisSaveContext &sc ) const
{
KoRect rect( getRect() );
sc.xmlWriter.addAttribute("svg:viewBox", QString( "0 0 %1 %2" ).arg( int( rect.width() * 100 ) )
.arg( int( rect.height() * 100 ) ) );
unsigned int pointCount = points.count();
unsigned int pos = 0;
QString d;
d += QString( "M%1 %2" ).arg( int( points.at(pos).x() * 100 ) )
.arg( int( points.at(pos).y() * 100 ) );
while ( pos + 4 <= pointCount )
{
d += QString( "C%1 %2 %3 %4 %5 %6" ).arg( int( points.at( pos + 2 ).x() * 100 ) )
.arg( int( points.at( pos + 2 ).y() * 100 ) )
.arg( int( points.at( pos + 3 ).x() * 100 ) )
.arg( int( points.at( pos + 3 ).y() * 100 ) )
.arg( int( points.at( pos + 1 ).x() * 100 ) )
.arg( int( points.at( pos + 1 ).y() * 100 ) );
pos += 4;
}
if ( pos < pointCount )
{
d += QString( "L%1 %2" ).arg( int( points.at( pos + 1 ).x() * 100 ) )
.arg( int( points.at( pos + 1 ).y() * 100 ) );
}
sc.xmlWriter.addAttribute( "svg:d", d );
return true;
}
const char * KPrBezierCurveObject::getOasisElementName() const
{
return "draw:path";
}
void KPrBezierCurveObject::loadOasis( const QDomElement &element, KoOasisContext & context, KPrLoadingInfo* info )
{
kdDebug(33001) << "KPrBezierCurveObject::loadOasis" << endl;
KPrPointObject::loadOasis( element, context, info );
allPoints = bezier2polyline( points );
//load marker
loadOasisMarker( context );
}
QDomDocumentFragment KPrBezierCurveObject::save( QDomDocument& doc, double offset )
{
return KPrPointObject::save( doc,offset );
}
double KPrBezierCurveObject::load(const QDomElement &element)
{
double offset = KPrPointObject::load( element );
allPoints = bezier2polyline( points );
return offset;
}
void KPrBezierCurveObject::updatePoints( double _fx, double _fy )
{
KPrPointObject::updatePoints( _fx, _fy );
int index = 0;
KoPointArray tmpPoints;
KoPointArray::ConstIterator it;
for ( it = allPoints.begin(); it != allPoints.end(); ++it ) {
KoPoint point = (*it);
double tmpX = point.x() * _fx;
double tmpY = point.y() * _fy;
tmpPoints.putPoints( index, 1, tmpX,tmpY );
++index;
}
allPoints = tmpPoints;
}
KoPointArray KPrBezierCurveObject::bezier2polyline( const KoPointArray &bezierPoints )
{
if ( bezierPoints.isNull() )
return bezierPoints;
KoPointArray _points( bezierPoints );
KoPointArray _allPoints;
unsigned int pointCount = _points.count();
if ( pointCount == 2 ) // line
{
_allPoints = _points;
}
else // cubic bezier curve
{
KoPointArray tmpPointArray;
unsigned int _tmpIndex = 0;
unsigned int count = 0;
while ( count < pointCount )
{
if ( pointCount >= ( count + 4 ) ) // for cubic bezier curve
{
double _firstX = _points.at( count ).x();
double _firstY = _points.at( count ).y();
double _fourthX = _points.at( count + 1 ).x();
double _fourthY = _points.at( count + 1 ).y();
double _secondX = _points.at( count + 2 ).x();
double _secondY = _points.at( count + 2 ).y();
double _thirdX = _points.at( count + 3 ).x();
double _thirdY = _points.at( count + 3 ).y();
KoPointArray bezierPoint;
bezierPoint.putPoints( 0, 4, _firstX,_firstY, _secondX,_secondY,
_thirdX,_thirdY, _fourthX,_fourthY );
bezierPoint = bezierPoint.cubicBezier();
KoPointArray::ConstIterator it;
for ( it = bezierPoint.begin(); it != bezierPoint.end(); ++it )
{
KoPoint _point = (*it);
tmpPointArray.putPoints( _tmpIndex, 1, _point.x(), _point.y() );
++_tmpIndex;
}
count += 4;
}
else // for line
{
double _x1 = _points.at( count ).x();
double _y1 = _points.at( count ).y();
double _x2 = _points.at( count + 1 ).x();
double _y2 = _points.at( count + 1 ).y();
tmpPointArray.putPoints( _tmpIndex, 2, _x1,_y1, _x2,_y2 );
_tmpIndex += 2;
count += 2;
}
}
_allPoints = tmpPointArray;
}
return _allPoints;
}
void KPrBezierCurveObject::flip(bool horizontal )
{
KPrPointObject::flip( horizontal );
KoPointArray tmpPoints;
int index = 0;
if ( ! horizontal )
{
KoPointArray::ConstIterator it;
double horiz = getSize().height()/2;
for ( it = allPoints.begin(); it != allPoints.end(); ++it )
{
KoPoint point = (*it);
if ( point.y()> horiz )
tmpPoints.putPoints( index, 1, point.x(),point.y()- 2*(point.y()-horiz) );
else
tmpPoints.putPoints( index, 1, point.x(),point.y()+ 2*(horiz - point.y()) );
++index;
}
}
else
{
KoPointArray::ConstIterator it;
double vert = getSize().width()/2;
for ( it = allPoints.begin(); it != allPoints.end(); ++it )
{
KoPoint point = (*it);
if ( point.y()> vert )
tmpPoints.putPoints( index, 1, point.x()- 2*(point.x()-vert), point.y() );
else
tmpPoints.putPoints( index, 1, point.x()+ 2*(vert - point.x()),point.y() );
++index;
}
}
allPoints = tmpPoints;
}
KoPointArray KPrBezierCurveObject::getDrawingPoints() const
{
return allPoints;
}
KPrCubicBezierCurveObject::KPrCubicBezierCurveObject()
: KPrBezierCurveObject()
{
}
KPrCubicBezierCurveObject::KPrCubicBezierCurveObject( const KoPointArray &_controlPoints,
const KoPointArray &_allPoints,
const KoSize & _size, const KoPen &_pen,
LineEnd _lineBegin, LineEnd _lineEnd )
: KPrBezierCurveObject( _controlPoints, _allPoints, _size, _pen, _lineBegin, _lineEnd )
{
}
DCOPObject* KPrCubicBezierCurveObject::dcopObject()
{
if ( !dcop )
dcop = new KPrCubicBezierCurveObjectIface( this );
return dcop;
}
KPrQuadricBezierCurveObject::KPrQuadricBezierCurveObject()
: KPrBezierCurveObject()
{
}
KPrQuadricBezierCurveObject::KPrQuadricBezierCurveObject( const KoPointArray &_controlPoints,
const KoPointArray &_allPoints,
const KoSize & _size, const KoPen &_pen,
LineEnd _lineBegin, LineEnd _lineEnd )
: KPrBezierCurveObject( _controlPoints, _allPoints, _size, _pen, _lineBegin, _lineEnd )
{
}
DCOPObject* KPrQuadricBezierCurveObject::dcopObject()
{
if ( !dcop )
dcop = new KPrQuadricBezierCurveObjectIface( this );
return dcop;
}