void ChordLine::read(const QDomElement& de)
{
path = QPainterPath();
for (QDomElement e = de.firstChildElement(); !e.isNull(); e = e.nextSiblingElement()) {
QString tag(e.tagName());
if (tag == "Path") {
path = QPainterPath();
QPointF curveTo;
QPointF p1;
int state = 0;
for (QDomElement ee = e.firstChildElement(); !ee.isNull(); ee = ee.nextSiblingElement()) {
QString tag(ee.tagName());
if (tag == "Element") {
int type = ee.attribute("type").toInt();
qreal x = ee.attribute("x").toDouble();
qreal y = ee.attribute("y").toDouble();
switch(QPainterPath::ElementType(type)) {
case QPainterPath::MoveToElement:
path.moveTo(x, y);
break;
case QPainterPath::LineToElement:
path.lineTo(x, y);
break;
case QPainterPath::CurveToElement:
curveTo.rx() = x;
curveTo.ry() = y;
state = 1;
break;
case QPainterPath::CurveToDataElement:
if (state == 1) {
p1.rx() = x;
p1.ry() = y;
state = 2;
}
else if (state == 2) {
path.cubicTo(curveTo, p1, QPointF(x, y));
state = 0;
}
break;
}
}
else
domError(ee);
}
modified = true;
setSubtype(ChordLineType(0));
}
else if (tag == "subtype")
setSubtype(ChordLineType(e.text().toInt()));
else if (!Element::readProperties(e))
domError(e);
}
}
void ChordLine::read(XmlReader& e)
{
path = QPainterPath();
while (e.readNextStartElement()) {
const QStringRef& tag(e.name());
if (tag == "Path") {
path = QPainterPath();
QPointF curveTo;
QPointF p1;
int state = 0;
while (e.readNextStartElement()) {
const QStringRef& tag(e.name());
if (tag == "Element") {
int type = e.intAttribute("type");
qreal x = e.doubleAttribute("x");
qreal y = e.doubleAttribute("y");
switch(QPainterPath::ElementType(type)) {
case QPainterPath::MoveToElement:
path.moveTo(x, y);
break;
case QPainterPath::LineToElement:
path.lineTo(x, y);
break;
case QPainterPath::CurveToElement:
curveTo.rx() = x;
curveTo.ry() = y;
state = 1;
break;
case QPainterPath::CurveToDataElement:
if (state == 1) {
p1.rx() = x;
p1.ry() = y;
state = 2;
}
else if (state == 2) {
path.cubicTo(curveTo, p1, QPointF(x, y));
state = 0;
}
break;
}
e.skipCurrentElement(); //needed to go to next Element in Path
}
else
e.unknown();
}
modified = true;
}
else if (tag == "subtype")
setChordLineType(ChordLineType(e.readInt()));
else if (tag == "straight")
setStraight(e.readInt());
else if (tag == "lengthX")
setLengthX(e.readInt());
else if (tag == "lengthY")
setLengthY(e.readInt());
else if (!Element::readProperties(e))
e.unknown();
}
}
void ChordLine::editDrag(const EditData& ed)
{
int n = path.elementCount();
QPainterPath p;
qreal sp = spatium();
qreal dx = ed.delta.x() / sp;
qreal dy = ed.delta.y() / sp;
for (int i = 0; i < n; ++i) {
const QPainterPath::Element& e = path.elementAt(i);
qreal x = e.x;
qreal y = e.y;
if (ed.curGrip == i) {
x += dx;
y += dy;
}
switch(e.type) {
case QPainterPath::CurveToDataElement:
break;
case QPainterPath::MoveToElement:
p.moveTo(x, y);
break;
case QPainterPath::LineToElement:
p.lineTo(x, y);
break;
case QPainterPath::CurveToElement:
{
qreal x2 = path.elementAt(i+1).x;
qreal y2 = path.elementAt(i+1).y;
qreal x3 = path.elementAt(i+2).x;
qreal y3 = path.elementAt(i+2).y;
if (i + 1 == ed.curGrip) {
x2 += dx;
y2 += dy;
}
else if (i + 2 == ed.curGrip) {
x3 += dx;
y3 += dy;
}
p.cubicTo(x, y, x2, y2, x3, y3);
i += 2;
}
break;
}
}
path = p;
modified = true;
setSubtype(ChordLineType(0));
}
