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tdegraphics/ksvg/impl/SVGPathElementImpl.cc

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/*
Copyright (C) 2001-2003 KSVG Team
This file is part of the KDE project
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 <math.h>
#include <cfloat>
#include <kdebug.h>
#include <tdelocale.h>
#include "SVGRectImpl.h"
#include "SVGPaintImpl.h"
#include "SVGPointImpl.h"
#include "SVGAngleImpl.h"
#include "SVGDocumentImpl.h"
#include "SVGSVGElementImpl.h"
#include "SVGPathSegArcImpl.h"
#include "SVGPathSegListImpl.h"
#include "SVGPathElementImpl.h"
#include "SVGPathSegLinetoImpl.h"
#include "SVGPathSegMovetoImpl.h"
#include "SVGAnimatedNumberImpl.h"
#include "SVGPathSegClosePathImpl.h"
#include "SVGPathSegCurvetoCubicImpl.h"
#include "SVGPathSegLinetoVerticalImpl.h"
#include "SVGPathSegLinetoHorizontalImpl.h"
#include "SVGPathSegCurvetoQuadraticImpl.h"
#include "SVGPathSegCurvetoCubicSmoothImpl.h"
#include "SVGPathSegCurvetoQuadraticSmoothImpl.h"
#include "SVGPaint.h"
#include "CanvasItem.h"
#include "KSVGCanvas.h"
#include "BezierPath.h"
#include "Point.h"
using namespace KSVG;
#include "SVGPathElementImpl.lut.h"
#include "ksvg_scriptinterpreter.h"
#include "ksvg_bridge.h"
#include "ksvg_ecma.h"
SVGPathElementImpl::SVGPathElementImpl(DOM::ElementImpl *impl) : SVGShapeImpl(impl), SVGTestsImpl(), SVGLangSpaceImpl(), SVGExternalResourcesRequiredImpl(), SVGStylableImpl(this), SVGTransformableImpl(), SVGAnimatedPathDataImpl(), SVGPathParser()
{
KSVG_EMPTY_FLAGS
m_pathLength = new SVGAnimatedNumberImpl();
m_pathLength->ref();
m_pathLength->setBaseVal(0);
}
SVGPathElementImpl::~SVGPathElementImpl()
{
pathSegList()->clear();
if(m_pathLength)
m_pathLength->deref();
}
SVGAnimatedNumberImpl *SVGPathElementImpl::pathLength() const
{
return m_pathLength;
}
double SVGPathElementImpl::getTotalLength()
{
T2P::BezierPath *path = ownerDoc()->canvas()->toBezierPath(m_item);
if(path)
return path->length();
return 0;
}
SVGPointImpl *SVGPathElementImpl::getPointAtLength(double distance)
{
SVGPointImpl *ret = SVGSVGElementImpl::createSVGPoint();
double totalDistance = getTotalLength();
T2P::BezierPath *path = ownerDoc()->canvas()->toBezierPath(m_item);
if(path)
{
T2P::Point p;
path->pointTangentNormalAt(distance / totalDistance, &p);
ret->setX(p.x());
ret->setY(p.y());
}
return ret;
}
unsigned long SVGPathElementImpl::getPathSegAtLength(double)
{
return 0;
}
SVGPathSegClosePathImpl *SVGPathElementImpl::createSVGPathSegClosePath()
{
SVGPathSegClosePathImpl *temp = new SVGPathSegClosePathImpl();
temp->ref();
return temp;
}
SVGPathSegMovetoAbsImpl *SVGPathElementImpl::createSVGPathSegMovetoAbs(double x, double y)
{
SVGPathSegMovetoAbsImpl *temp = new SVGPathSegMovetoAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
SVGPathSegMovetoRelImpl *SVGPathElementImpl::createSVGPathSegMovetoRel(double x, double y)
{
SVGPathSegMovetoRelImpl *temp = new SVGPathSegMovetoRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
SVGPathSegLinetoAbsImpl *SVGPathElementImpl::createSVGPathSegLinetoAbs(double x, double y)
{
SVGPathSegLinetoAbsImpl *temp = new SVGPathSegLinetoAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
SVGPathSegLinetoRelImpl *SVGPathElementImpl::createSVGPathSegLinetoRel(double x, double y)
{
SVGPathSegLinetoRelImpl *temp = new SVGPathSegLinetoRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
SVGPathSegCurvetoCubicAbsImpl *SVGPathElementImpl::createSVGPathSegCurvetoCubicAbs(double x, double y, double x1, double y1, double x2, double y2)
{
SVGPathSegCurvetoCubicAbsImpl *temp = new SVGPathSegCurvetoCubicAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX1(x1);
temp->setY1(y1);
temp->setX2(x2);
temp->setY2(y2);
return temp;
}
SVGPathSegCurvetoCubicRelImpl *SVGPathElementImpl::createSVGPathSegCurvetoCubicRel(double x, double y, double x1, double y1, double x2, double y2)
{
SVGPathSegCurvetoCubicRelImpl *temp = new SVGPathSegCurvetoCubicRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX1(x1);
temp->setY1(y1);
temp->setX2(x2);
temp->setY2(y2);
return temp;
}
SVGPathSegCurvetoQuadraticAbsImpl *SVGPathElementImpl::createSVGPathSegCurvetoQuadraticAbs(double x, double y, double x1, double y1)
{
SVGPathSegCurvetoQuadraticAbsImpl *temp = new SVGPathSegCurvetoQuadraticAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX1(x1);
temp->setY1(y1);
return temp;
}
SVGPathSegCurvetoQuadraticRelImpl *SVGPathElementImpl::createSVGPathSegCurvetoQuadraticRel(double x, double y, double x1, double y1)
{
SVGPathSegCurvetoQuadraticRelImpl *temp = new SVGPathSegCurvetoQuadraticRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX1(x1);
temp->setY1(y1);
return temp;
}
SVGPathSegArcAbsImpl *SVGPathElementImpl::createSVGPathSegArcAbs(double x, double y, double r1, double r2, double angle, bool largeArcFlag, bool sweepFlag)
{
SVGPathSegArcAbsImpl *temp = new SVGPathSegArcAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setR1(r1);
temp->setR2(r2);
temp->setAngle(angle);
temp->setLargeArcFlag(largeArcFlag);
temp->setSweepFlag(sweepFlag);
return temp;
}
SVGPathSegArcRelImpl *SVGPathElementImpl::createSVGPathSegArcRel(double x, double y, double r1, double r2, double angle, bool largeArcFlag, bool sweepFlag)
{
SVGPathSegArcRelImpl *temp = new SVGPathSegArcRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setR1(r1);
temp->setR2(r2);
temp->setAngle(angle);
temp->setLargeArcFlag(largeArcFlag);
temp->setSweepFlag(sweepFlag);
return temp;
}
SVGPathSegLinetoHorizontalAbsImpl *SVGPathElementImpl::createSVGPathSegLinetoHorizontalAbs(double x)
{
SVGPathSegLinetoHorizontalAbsImpl *temp = new SVGPathSegLinetoHorizontalAbsImpl();
temp->ref();
temp->setX(x);
return temp;
}
SVGPathSegLinetoHorizontalRelImpl *SVGPathElementImpl::createSVGPathSegLinetoHorizontalRel(double x)
{
SVGPathSegLinetoHorizontalRelImpl *temp = new SVGPathSegLinetoHorizontalRelImpl();
temp->ref();
temp->setX(x);
return temp;
}
SVGPathSegLinetoVerticalAbsImpl *SVGPathElementImpl::createSVGPathSegLinetoVerticalAbs(double y)
{
SVGPathSegLinetoVerticalAbsImpl *temp = new SVGPathSegLinetoVerticalAbsImpl();
temp->ref();
temp->setY(y);
return temp;
}
SVGPathSegLinetoVerticalRelImpl *SVGPathElementImpl::createSVGPathSegLinetoVerticalRel(double y)
{
SVGPathSegLinetoVerticalRelImpl *temp = new SVGPathSegLinetoVerticalRelImpl();
temp->ref();
temp->setY(y);
return temp;
}
SVGPathSegCurvetoCubicSmoothAbsImpl *SVGPathElementImpl::createSVGPathSegCurvetoCubicSmoothAbs(double x, double y, double x2, double y2)
{
SVGPathSegCurvetoCubicSmoothAbsImpl *temp = new SVGPathSegCurvetoCubicSmoothAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX2(x2);
temp->setY2(y2);
return temp;
}
SVGPathSegCurvetoCubicSmoothRelImpl *SVGPathElementImpl::createSVGPathSegCurvetoCubicSmoothRel(double x, double y, double x2, double y2)
{
SVGPathSegCurvetoCubicSmoothRelImpl *temp = new SVGPathSegCurvetoCubicSmoothRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
temp->setX2(x2);
temp->setY2(y2);
return temp;
}
SVGPathSegCurvetoQuadraticSmoothAbsImpl *SVGPathElementImpl::createSVGPathSegCurvetoQuadraticSmoothAbs(double x, double y)
{
SVGPathSegCurvetoQuadraticSmoothAbsImpl *temp = new SVGPathSegCurvetoQuadraticSmoothAbsImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
SVGPathSegCurvetoQuadraticSmoothRelImpl *SVGPathElementImpl::createSVGPathSegCurvetoQuadraticSmoothRel(double x, double y)
{
SVGPathSegCurvetoQuadraticSmoothRelImpl *temp = new SVGPathSegCurvetoQuadraticSmoothRelImpl();
temp->ref();
temp->setX(x);
temp->setY(y);
return temp;
}
void SVGPathElementImpl::svgMoveTo(double x1, double y1, bool, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegMovetoAbs(x1, y1));
else
pathSegList()->appendItem(createSVGPathSegMovetoRel(x1, y1));
}
void SVGPathElementImpl::svgLineTo(double x1, double y1, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegLinetoAbs(x1, y1));
else
pathSegList()->appendItem(createSVGPathSegLinetoRel(x1, y1));
}
void SVGPathElementImpl::svgLineToHorizontal(double x, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegLinetoHorizontalAbs(x));
else
pathSegList()->appendItem(createSVGPathSegLinetoHorizontalRel(x));
}
void SVGPathElementImpl::svgLineToVertical(double y, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegLinetoVerticalAbs(y));
else
pathSegList()->appendItem(createSVGPathSegLinetoVerticalRel(y));
}
void SVGPathElementImpl::svgCurveToCubic(double x1, double y1, double x2, double y2, double x, double y, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegCurvetoCubicAbs(x, y, x1, y1, x2, y2));
else
pathSegList()->appendItem(createSVGPathSegCurvetoCubicRel(x, y, x1, y1, x2, y2));
}
void SVGPathElementImpl::svgCurveToCubicSmooth(double x, double y, double x2, double y2, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegCurvetoCubicSmoothAbs(x2, y2, x, y));
else
pathSegList()->appendItem(createSVGPathSegCurvetoCubicSmoothRel(x2, y2, x, y));
}
void SVGPathElementImpl::svgCurveToQuadratic(double x, double y, double x1, double y1, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegCurvetoQuadraticAbs(x1, y1, x, y));
else
pathSegList()->appendItem(createSVGPathSegCurvetoQuadraticRel(x1, y1, x, y));
}
void SVGPathElementImpl::svgCurveToQuadraticSmooth(double x, double y, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegCurvetoQuadraticSmoothAbs(x, y));
else
pathSegList()->appendItem(createSVGPathSegCurvetoQuadraticSmoothRel(x, y));
}
void SVGPathElementImpl::svgArcTo(double x, double y, double r1, double r2, double angle, bool largeArcFlag, bool sweepFlag, bool abs)
{
if(abs)
pathSegList()->appendItem(createSVGPathSegArcAbs(x, y, r1, r2, angle, largeArcFlag, sweepFlag));
else
pathSegList()->appendItem(createSVGPathSegArcRel(x, y, r1, r2, angle, largeArcFlag, sweepFlag));
}
void SVGPathElementImpl::svgClosePath()
{
pathSegList()->appendItem(createSVGPathSegClosePath());
}
// Ecma stuff
/*
@namespace KSVG
@begin SVGPathElementImpl::s_hashTable 3
d SVGPathElementImpl::D DontDelete|ReadOnly
pathLength SVGPathElementImpl::PathLength DontDelete|ReadOnly
@end
@namespace KSVG
@begin SVGPathElementImplProto::s_hashTable 23
getTotalLength SVGPathElementImpl::GetTotalLength DontDelete|Function 0
getPointAtLength SVGPathElementImpl::GetPointAtLength DontDelete|Function 1
getPathSegAtLength SVGPathElementImpl::GetPathSegAtLength DontDelete|Function 1
createSVGPathSegClosePath SVGPathElementImpl::CreateSVGPathSegClosePath DontDelete|Function 0
createSVGPathSegMovetoAbs SVGPathElementImpl::CreateSVGPathSegMovetoAbs DontDelete|Function 2
createSVGPathSegMovetoRel SVGPathElementImpl::CreateSVGPathSegMovetoRel DontDelete|Function 2
createSVGPathSegLinetoAbs SVGPathElementImpl::CreateSVGPathSegLinetoAbs DontDelete|Function 2
createSVGPathSegLinetoRel SVGPathElementImpl::CreateSVGPathSegLinetoRel DontDelete|Function 2
createSVGPathSegArcAbs SVGPathElementImpl::CreateSVGPathSegArcAbs DontDelete|Function 7
createSVGPathSegArcRel SVGPathElementImpl::CreateSVGPathSegArcRel DontDelete|Function 7
createSVGPathSegCurvetoCubicAbs SVGPathElementImpl::CreateSVGPathSegCurvetoCubicAbs DontDelete|Function 6
createSVGPathSegCurvetoCubicRel SVGPathElementImpl::CreateSVGPathSegCurvetoCubicRel DontDelete|Function 6
createSVGPathSegCurvetoQuadraticAbs SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticAbs DontDelete|Function 4
createSVGPathSegCurvetoQuadraticRel SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticRel DontDelete|Function 4
createSVGPathSegLinetoHorizontalAbs SVGPathElementImpl::CreateSVGPathSegLinetoHorizontalAbs DontDelete|Function 1
createSVGPathSegLinetoHorizontalRel SVGPathElementImpl::CreateSVGPathSegLinetoHorizontalRel DontDelete|Function 1
createSVGPathSegLinetoVerticalAbs SVGPathElementImpl::CreateSVGPathSegLinetoVerticalAbs DontDelete|Function 1
createSVGPathSegLinetoVerticalRel SVGPathElementImpl::CreateSVGPathSegLinetoVerticalRel DontDelete|Function 1
createSVGPathSegCurvetoCubicAbs SVGPathElementImpl::CreateSVGPathSegCurvetoCubicAbs DontDelete|Function 4
createSVGPathSegCurvetoCubicRel SVGPathElementImpl::CreateSVGPathSegCurvetoCubicRel DontDelete|Function 4
createSVGPathSegCurvetoQuadraticAbs SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticAbs DontDelete|Function 2
createSVGPathSegCurvetoQuadraticRel SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticRel DontDelete|Function 2
@end
*/
KSVG_IMPLEMENT_PROTOTYPE("SVGPathElementImpl", SVGPathElementImplProto, SVGPathElementImplProtoFunc)
Value SVGPathElementImpl::getValueProperty(ExecState *exec, int token) const
{
//KSVG_CHECK_ATTRIBUTE
switch(token)
{
case PathLength:
return m_pathLength->cache(exec);
case D:
// if(!attributeMode)
{
TQString d;
unsigned int nrSegs = pathSegList()->numberOfItems();
SVGPathSegImpl *curseg = 0;
for(unsigned int i = 0; i < nrSegs; i++)
{
curseg = pathSegList()->getItem(i);
if(curseg)
d += curseg->toString() + " ";
}
return String(d);
}
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
return Undefined();
}
}
void SVGPathElementImpl::putValueProperty(ExecState *exec, int token, const Value &value, int attr)
{
// This class has just ReadOnly properties, only with the Internal flag set
// it's allowed to modify those.
if(!(attr & KJS::Internal))
return;
switch(token)
{
case D:
{
pathSegList()->clear();
TQString d = value.toString(exec).qstring();
parseSVG(d, false);
if(hasMarkers())
m_markerData = MarkerData(pathSegList());
break;
}
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
}
}
Value SVGPathElementImplProtoFunc::call(ExecState *exec, Object &thisObj, const List &args)
{
KSVG_CHECK_THIS(SVGPathElementImpl)
switch(id)
{
case SVGPathElementImpl::GetTotalLength:
return Number(obj->getTotalLength());
case SVGPathElementImpl::GetPointAtLength:
return obj->getPointAtLength(args[0].toNumber(exec))->cache(exec);
case SVGPathElementImpl::GetPathSegAtLength:
return Number(obj->getPathSegAtLength(args[0].toNumber(exec)));
case SVGPathElementImpl::CreateSVGPathSegClosePath:
return obj->createSVGPathSegClosePath()->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegMovetoAbs:
return obj->createSVGPathSegMovetoAbs(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegMovetoRel:
return obj->createSVGPathSegMovetoRel(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoAbs:
return obj->createSVGPathSegLinetoAbs(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoRel:
return obj->createSVGPathSegLinetoRel(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoCubicAbs:
return obj->createSVGPathSegCurvetoCubicAbs(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec), args[4].toNumber(exec), args[5].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoCubicRel:
return obj->createSVGPathSegCurvetoCubicRel(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec), args[4].toNumber(exec), args[5].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticAbs:
return obj->createSVGPathSegCurvetoQuadraticAbs(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticRel:
return obj->createSVGPathSegCurvetoQuadraticRel(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegArcAbs:
return obj->createSVGPathSegArcAbs(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec), args[4].toNumber(exec), args[5].toBoolean(exec), args[6].toBoolean(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegArcRel:
return obj->createSVGPathSegArcRel(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec), args[4].toNumber(exec), args[5].toBoolean(exec), args[6].toBoolean(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoHorizontalAbs:
return obj->createSVGPathSegLinetoHorizontalAbs(args[0].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoHorizontalRel:
return obj->createSVGPathSegLinetoHorizontalRel(args[0].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoVerticalAbs:
return obj->createSVGPathSegLinetoVerticalAbs(args[0].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegLinetoVerticalRel:
return obj->createSVGPathSegLinetoVerticalRel(args[0].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoCubicSmoothAbs:
return obj->createSVGPathSegCurvetoCubicSmoothAbs(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoCubicSmoothRel:
return obj->createSVGPathSegCurvetoCubicSmoothRel(args[0].toNumber(exec), args[1].toNumber(exec), args[2].toNumber(exec), args[3].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticSmoothAbs:
return obj->createSVGPathSegCurvetoQuadraticSmoothAbs(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
case SVGPathElementImpl::CreateSVGPathSegCurvetoQuadraticSmoothRel:
return obj->createSVGPathSegCurvetoQuadraticSmoothRel(args[0].toNumber(exec), args[1].toNumber(exec))->cache(exec);
default:
kdWarning() << "Unhandled function id in " << k_funcinfo << " : " << id << endl;
break;
}
return Undefined();
}
SVGRectImpl *SVGPathElementImpl::getBBox()
{
SVGRectImpl *ret = SVGSVGElementImpl::createSVGRect();
if(m_item)
{
T2P::BezierPath *path = ownerDoc()->canvas()->toBezierPath(m_item);
if(path)
{
T2P::Point topLeft;
T2P::Point bottomRight;
path->boundingBox(&topLeft, &bottomRight);
ret->setX(topLeft.x());
ret->setY(topLeft.y());
ret->setWidth(bottomRight.x() - topLeft.x());
ret->setHeight(bottomRight.y() - topLeft.y());
}
}
return ret;
}
void SVGPathElementImpl::createItem(KSVGCanvas *c)
{
if(!c)
c = ownerDoc()->canvas();
if(!m_item)
{
// TODO : this is a quick fix for this problem:
// d attribute encountered before marker attributes.
// Try to process the attributes in the right order, ie.
// d attr processing should be last.
if(hasMarkers() && m_markerData.numMarkers() == 0)
m_markerData = MarkerData(pathSegList());
m_item = c->createPath(this);
c->insert(m_item);
}
}
SVGPathElementImpl::MarkerData::MarkerData(SVGPathSegListImpl *path)
{
unsigned int numSegments = path->numberOfItems();
double curx = 0;
double cury = 0;
int currentSubpathStartIndex = -1;
double previousQuadraticX1 = 0;
double previousQuadraticY1 = 0;
double previousCubicX2 = 0;
double previousCubicY2 = 0;
TQValueVector<SegmentData> pathSegmentData(numSegments);
for(unsigned int i = 0; i < numSegments; i++)
{
SVGPathSegImpl *segment = path->getItem(i);
struct SegmentData data;
data.type = segment->pathSegType();
if(segment->pathSegType() == PATHSEG_MOVETO_ABS || segment->pathSegType() == PATHSEG_MOVETO_REL)
{
if(currentSubpathStartIndex >= 0)
{
// Finish the previous subpath.
for(unsigned int j = currentSubpathStartIndex; j < i; j++)
{
pathSegmentData[j].subpathStartIndex = currentSubpathStartIndex;
pathSegmentData[j].subpathEndIndex = i - 1;
pathSegmentData[j].subpathIsClosed = false;
}
}
currentSubpathStartIndex = i;
}
else if(segment->pathSegType() == PATHSEG_CLOSEPATH)
{
if(currentSubpathStartIndex >= 0)
{
SVGPathSegClosePathImpl *s = static_cast<SVGPathSegClosePathImpl *>(segment);
s->setX(pathSegmentData[currentSubpathStartIndex].startx + pathSegmentData[currentSubpathStartIndex].dx);
s->setY(pathSegmentData[currentSubpathStartIndex].starty + pathSegmentData[currentSubpathStartIndex].dy);
for(unsigned int j = currentSubpathStartIndex; j < i; j++)
{
pathSegmentData[j].subpathStartIndex = currentSubpathStartIndex;
pathSegmentData[j].subpathEndIndex = i;
pathSegmentData[j].subpathIsClosed = true;
}
data.subpathStartIndex = currentSubpathStartIndex;
data.subpathEndIndex = i;
data.subpathIsClosed = true;
}
currentSubpathStartIndex = i + 1;
}
switch(segment->pathSegType())
{
case PATHSEG_CURVETO_CUBIC_ABS:
{
SVGPathSegCurvetoCubicAbsImpl *s = static_cast<SVGPathSegCurvetoCubicAbsImpl *>(segment);
previousCubicX2 = s->x2();
previousCubicY2 = s->y2();
break;
}
case PATHSEG_CURVETO_CUBIC_REL:
{
SVGPathSegCurvetoCubicRelImpl *s = static_cast<SVGPathSegCurvetoCubicRelImpl *>(segment);
previousCubicX2 = curx + s->x2();
previousCubicY2 = cury + s->y2();
break;
}
case PATHSEG_CURVETO_CUBIC_SMOOTH_ABS:
{
SVGPathSegCurvetoCubicSmoothAbsImpl *s = static_cast<SVGPathSegCurvetoCubicSmoothAbsImpl *>(segment);
s->setPreviousX2(previousCubicX2);
s->setPreviousY2(previousCubicY2);
previousCubicX2 = s->x2();
previousCubicY2 = s->y2();
break;
}
case PATHSEG_CURVETO_CUBIC_SMOOTH_REL:
{
SVGPathSegCurvetoCubicSmoothRelImpl *s = static_cast<SVGPathSegCurvetoCubicSmoothRelImpl *>(segment);
s->setPreviousAbsX2(previousCubicX2);
s->setPreviousAbsY2(previousCubicY2);
previousCubicX2 = curx + s->x2();
previousCubicY2 = cury + s->y2();
break;
}
case PATHSEG_CURVETO_QUADRATIC_ABS:
{
SVGPathSegCurvetoQuadraticAbsImpl *s = static_cast<SVGPathSegCurvetoQuadraticAbsImpl *>(segment);
previousQuadraticX1 = s->x1();
previousQuadraticY1 = s->y1();
break;
}
case PATHSEG_CURVETO_QUADRATIC_REL:
{
SVGPathSegCurvetoQuadraticRelImpl *s = static_cast<SVGPathSegCurvetoQuadraticRelImpl *>(segment);
previousQuadraticX1 = curx + s->x1();
previousQuadraticY1 = cury + s->y1();
break;
}
case PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:
{
SVGPathSegCurvetoQuadraticSmoothAbsImpl *s = static_cast<SVGPathSegCurvetoQuadraticSmoothAbsImpl *>(segment);
s->setPreviousX1(previousQuadraticX1);
s->setPreviousY1(previousQuadraticY1);
previousQuadraticX1 = s->x1(curx);
previousQuadraticY1 = s->y1(cury);
break;
}
case PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
{
SVGPathSegCurvetoQuadraticSmoothRelImpl *s = static_cast<SVGPathSegCurvetoQuadraticSmoothRelImpl *>(segment);
s->setPreviousAbsX1(previousQuadraticX1);
s->setPreviousAbsY1(previousQuadraticY1);
previousQuadraticX1 = s->absX1(curx);
previousQuadraticY1 = s->absY1(cury);
break;
}
default:
previousCubicX2 = curx;
previousCubicY2 = cury;
previousQuadraticX1 = curx;
previousQuadraticY1 = cury;
break;
}
data.startx = curx;
data.starty = cury;
segment->getDeltasAndSlopes(curx, cury, &data.dx, &data.dy, &data.startSlope, &data.endSlope);
pathSegmentData[i] = data;
curx += data.dx;
cury += data.dy;
}
if(currentSubpathStartIndex >= 0)
{
// Finish the previous subpath.
for(unsigned int j = currentSubpathStartIndex; j < numSegments; j++)
{
pathSegmentData[j].subpathStartIndex = currentSubpathStartIndex;
pathSegmentData[j].subpathEndIndex = numSegments - 1;
pathSegmentData[j].subpathIsClosed = false;
}
}
m_markers.resize(numSegments);
for(unsigned int i = 0; i < numSegments; i++)
{
struct Marker marker;
marker.x = pathSegmentData[i].startx + pathSegmentData[i].dx;
marker.y = pathSegmentData[i].starty + pathSegmentData[i].dy;
double inSlope;
double outSlope;
bool haveInSlope = false;
bool haveOutSlope = false;
if(pathSegmentData[i].subpathStartIndex == i && pathSegmentData[i].subpathIsClosed)
{
// Spec: For closed subpaths, the marker for the initial vertex uses the end direction
// of the corresponding closepath for its incoming slope and the first segment's
// start slope for its outgoing slope.
haveInSlope = getEndSlope(pathSegmentData, pathSegmentData[i].subpathEndIndex, &inSlope);
haveOutSlope = getStartSlope(pathSegmentData, i + 1, &outSlope);
}
else if(pathSegmentData[i].type == PATHSEG_CLOSEPATH)
{
haveInSlope = getEndSlope(pathSegmentData, i, &inSlope);
// Spec: If the segment following a closepath is other than a moveto, the marker
// for the closepath uses the following segment's start direction as its
// outgoing direction.
if(i + 1 < numSegments && (pathSegmentData[i + 1].type != PATHSEG_MOVETO_ABS && pathSegmentData[i + 1].type != PATHSEG_MOVETO_REL))
haveOutSlope = getStartSlope(pathSegmentData, i + 1, &outSlope);
else
haveOutSlope = getStartSlope(pathSegmentData, pathSegmentData[i].subpathStartIndex, &outSlope);
}
else
{
haveOutSlope = getStartSlope(pathSegmentData, i + 1, &outSlope);
haveInSlope = getEndSlope(pathSegmentData, i, &inSlope);
}
if(!haveInSlope && !haveOutSlope)
{
outSlope = 0;
inSlope = 0;
}
else if(haveInSlope && !haveOutSlope)
outSlope = inSlope;
else if(!haveInSlope && haveOutSlope)
inSlope = outSlope;
double bisector = SVGAngleImpl::shortestArcBisector(inSlope, outSlope);
marker.angle = bisector;
m_markers[i] = marker;
}
}
bool SVGPathElementImpl::MarkerData::getStartSlope(TQValueVector<SegmentData> segments, unsigned int i, double *pStartSlope)
{
if(i > segments.count() - 1 || segments[i].type == PATHSEG_MOVETO_ABS || segments[i].type == PATHSEG_MOVETO_REL)
return false;
else
{
const double epsilon = DBL_EPSILON;
if(fabs(segments[i].dx) > epsilon || fabs(segments[i].dy) > epsilon)
{
*pStartSlope = segments[i].startSlope;
return true;
}
else
{
int subpathStartIndex = segments[i].subpathStartIndex;
for(int j = i - 1; j >= subpathStartIndex; j--)
{
if(segments[j].type == PATHSEG_MOVETO_ABS || segments[j].type == PATHSEG_MOVETO_REL)
return false;
if(fabs(segments[j].dx) > epsilon || fabs(segments[j].dy) > epsilon)
{
*pStartSlope = segments[j].endSlope;
return true;
}
}
return false;
}
}
}
bool SVGPathElementImpl::MarkerData::getEndSlope(TQValueVector<SegmentData> segments, unsigned int i, double *pEndSlope)
{
if(i > segments.count() - 1 || segments[i].type == PATHSEG_MOVETO_ABS || segments[i].type == PATHSEG_MOVETO_REL)
return false;
else
{
const double epsilon = DBL_EPSILON;
if(fabs(segments[i].dx) > epsilon || fabs(segments[i].dy) > epsilon)
{
*pEndSlope = segments[i].endSlope;
return true;
}
else
{
int subpathEndIndex = segments[i].subpathEndIndex;
for(int j = i + 1; j <= subpathEndIndex; j++)
{
if(segments[j].type == PATHSEG_MOVETO_ABS || segments[j].type == PATHSEG_MOVETO_REL)
return false;
if(fabs(segments[j].dx) > epsilon || fabs(segments[j].dy) > epsilon)
{
*pEndSlope = segments[j].startSlope;
return true;
}
}
return false;
}
}
}
// vim:ts=4:noet