void EnhancedPathHandle::saveOdf(KoShapeSavingContext &context) const
{
if (!hasPosition()) {
return;
}
context.xmlWriter().startElement("draw:handle");
context.xmlWriter().addAttribute("draw:handle-position", m_positionX->toString() + ' ' + m_positionY->toString());
if (isPolar()) {
context.xmlWriter().addAttribute("draw:handle-polar", m_polarX->toString() + ' ' + m_polarY->toString());
if (m_minRadius) {
context.xmlWriter().addAttribute("draw:handle-radius-range-minimum", m_minRadius->toString());
}
if (m_maxRadius) {
context.xmlWriter().addAttribute("draw:handle-radius-range-maximum", m_maxRadius->toString());
}
} else {
if (m_minimumX) {
context.xmlWriter().addAttribute("draw:handle-range-x-minimum", m_minimumX->toString());
}
if (m_maximumX) {
context.xmlWriter().addAttribute("draw:handle-range-x-maximum", m_maximumX->toString());
}
if (m_minimumY) {
context.xmlWriter().addAttribute("draw:handle-range-y-minimum", m_minimumY->toString());
}
if (m_maximumY) {
context.xmlWriter().addAttribute("draw:handle-range-y-maximum", m_maximumY->toString());
}
}
context.xmlWriter().endElement(); // draw:handle
}
void EnhancedPathHandle::changePosition(const QPointF &position)
{
if (!hasPosition()) {
return;
}
QPointF constrainedPosition(position);
if (isPolar()) {
// convert cartesian coordinates into polar coordinates
QPointF polarCenter(m_polarX->evaluate(), m_polarY->evaluate());
QPointF diff = constrainedPosition - polarCenter;
// compute the polar radius
qreal radius = sqrt(diff.x() * diff.x() + diff.y() * diff.y());
// compute the polar angle
qreal angle = atan2(diff.y(), diff.x());
if (angle < 0.0) {
angle += 2 * M_PI;
}
// constrain the radius
if (m_minRadius) {
radius = qMax(m_minRadius->evaluate(), radius);
}
if (m_maxRadius) {
radius = qMin(m_maxRadius->evaluate(), radius);
}
constrainedPosition.setX(angle * 180.0 / M_PI);
constrainedPosition.setY(radius);
} else {
// constrain x coordinate
if (m_minimumX) {
constrainedPosition.setX(qMax(m_minimumX->evaluate(), constrainedPosition.x()));
}
if (m_maximumX) {
constrainedPosition.setX(qMin(m_maximumX->evaluate(), constrainedPosition.x()));
}
// constrain y coordinate
if (m_minimumY) {
constrainedPosition.setY(qMax(m_minimumY->evaluate(), constrainedPosition.y()));
}
if (m_maximumY) {
constrainedPosition.setY(qMin(m_maximumY->evaluate(), constrainedPosition.y()));
}
}
m_positionX->modify(constrainedPosition.x());
m_positionY->modify(constrainedPosition.y());
}
QPointF EnhancedPathHandle::position()
{
if (!hasPosition())
return QPointF();
QPointF position(m_positionX->evaluate(), m_positionY->evaluate());
if (isPolar()) {
// convert polar coordinates into cartesian coordinates
QPointF center(m_polarX->evaluate(), m_polarY->evaluate());
qreal angleInRadian = position.x() * M_PI / 180.0;
position = center + position.y() * QPointF(cos(angleInRadian), sin(angleInRadian));
}
return position;
}
