void KoPathControlPointMoveCommand::redo()
{
KUndo2Command::redo();
KoPathShape * pathShape = m_pointData.pathShape;
KoPathPoint * point = pathShape->pointByIndex(m_pointData.pointIndex);
if (point) {
pathShape->update();
if (m_pointType == KoPathPoint::ControlPoint1) {
point->setControlPoint1(point->controlPoint1() + m_offset);
if (point->properties() & KoPathPoint::IsSymmetric) {
// set the other control point so that it lies on the line between the moved
// control point and the point, with the same distance to the point as the moved point
point->setControlPoint2(2.0 * point->point() - point->controlPoint1());
} else if (point->properties() & KoPathPoint::IsSmooth) {
// move the other control point so that it lies on the line through point and control point
// keeping its distance to the point
QPointF direction = point->point() - point->controlPoint1();
direction /= sqrt(direction.x() * direction.x() + direction.y() * direction.y());
QPointF distance = point->point() - point->controlPoint2();
qreal length = sqrt(distance.x() * distance.x() + distance.y() * distance.y());
point->setControlPoint2(point->point() + length * direction);
}
} else if (m_pointType == KoPathPoint::ControlPoint2) {
point->setControlPoint2(point->controlPoint2() + m_offset);
if (point->properties() & KoPathPoint::IsSymmetric) {
// set the other control point so that it lies on the line between the moved
// control point and the point, with the same distance to the point as the moved point
point->setControlPoint1(2.0 * point->point() - point->controlPoint2());
} else if (point->properties() & KoPathPoint::IsSmooth) {
// move the other control point so that it lies on the line through point and control point
// keeping its distance to the point
QPointF direction = point->point() - point->controlPoint2();
direction /= sqrt(direction.x() * direction.x() + direction.y() * direction.y());
QPointF distance = point->point() - point->controlPoint1();
qreal length = sqrt(distance.x() * distance.x() + distance.y() * distance.y());
point->setControlPoint1(point->point() + length * direction);
}
}
pathShape->normalize();
pathShape->update();
}
}
bool KoPathPointTypeCommand::appendPointData(KoPathPointData data)
{
KoPathPoint *point = data.pathShape->pointByIndex(data.pointIndex);
if (! point)
return false;
PointData pointData(data);
pointData.m_oldControlPoint1 = data.pathShape->shapeToDocument(point->controlPoint1());
pointData.m_oldControlPoint2 = data.pathShape->shapeToDocument(point->controlPoint2());
pointData.m_oldProperties = point->properties();
pointData.m_hadControlPoint1 = point->activeControlPoint1();
pointData.m_hadControlPoint2 = point->activeControlPoint2();
m_additionalPointData.append(pointData);
return true;
}
KoPathSegmentBreakCommand::KoPathSegmentBreakCommand(const KoPathPointData & pointData, KUndo2Command *parent)
: KUndo2Command(parent)
, m_pointData(pointData)
, m_startIndex(-1, -1)
, m_broken(false)
{
if (m_pointData.pathShape->isClosedSubpath(m_pointData.pointIndex.first)) {
m_startIndex = m_pointData.pointIndex;
KoPathPoint * before = m_pointData.pathShape->pointByIndex(m_startIndex);
if (before->properties() & KoPathPoint::CloseSubpath) {
m_startIndex.second = 0;
} else {
++m_startIndex.second;
}
}
setText(QObject::tr("Break subpath"));
}
KoPathPointTypeCommand::KoPathPointTypeCommand(
const QList<KoPathPointData> & pointDataList,
PointType pointType,
KUndo2Command *parent)
: KoPathBaseCommand(parent)
, m_pointType(pointType)
{
QList<KoPathPointData>::const_iterator it(pointDataList.begin());
for (; it != pointDataList.end(); ++it) {
KoPathPoint *point = it->pathShape->pointByIndex(it->pointIndex);
if (point) {
PointData pointData(*it);
pointData.m_oldControlPoint1 = it->pathShape->shapeToDocument(point->controlPoint1());
pointData.m_oldControlPoint2 = it->pathShape->shapeToDocument(point->controlPoint2());
pointData.m_oldProperties = point->properties();
pointData.m_hadControlPoint1 = point->activeControlPoint1();
pointData.m_hadControlPoint2 = point->activeControlPoint2();
m_oldPointData.append(pointData);
m_shapes.insert(it->pathShape);
}
}
setText(QObject::tr("Set point type"));
}
void KoPathPointTypeCommand::redo()
{
KUndo2Command::redo();
repaint(false);
m_additionalPointData.clear();
QList<PointData>::iterator it(m_oldPointData.begin());
for (; it != m_oldPointData.end(); ++it) {
KoPathPoint *point = it->m_pointData.pathShape->pointByIndex(it->m_pointData.pointIndex);
KoPathPoint::PointProperties properties = point->properties();
switch (m_pointType) {
case Line: {
point->removeControlPoint1();
point->removeControlPoint2();
break;
}
case Curve: {
KoPathPointIndex pointIndex = it->m_pointData.pointIndex;
KoPathPointIndex prevIndex;
KoPathPointIndex nextIndex;
KoPathShape * path = it->m_pointData.pathShape;
// get previous path node
if (pointIndex.second > 0)
prevIndex = KoPathPointIndex(pointIndex.first, pointIndex.second - 1);
else if (pointIndex.second == 0 && path->isClosedSubpath(pointIndex.first))
prevIndex = KoPathPointIndex(pointIndex.first, path->subpathPointCount(pointIndex.first) - 1);
// get next node
if (pointIndex.second < path->subpathPointCount(pointIndex.first) - 1)
nextIndex = KoPathPointIndex(pointIndex.first, pointIndex.second + 1);
else if (pointIndex.second < path->subpathPointCount(pointIndex.first) - 1
&& path->isClosedSubpath(pointIndex.first))
nextIndex = KoPathPointIndex(pointIndex.first, 0);
KoPathPoint * prevPoint = path->pointByIndex(prevIndex);
KoPathPoint * nextPoint = path->pointByIndex(nextIndex);
if (prevPoint && ! point->activeControlPoint1() && appendPointData(KoPathPointData(path, prevIndex))) {
KoPathSegment cubic = KoPathSegment(prevPoint, point).toCubic();
if (prevPoint->activeControlPoint2()) {
prevPoint->setControlPoint2(cubic.first()->controlPoint2());
point->setControlPoint1(cubic.second()->controlPoint1());
} else
point->setControlPoint1(cubic.second()->controlPoint1());
}
if (nextPoint && ! point->activeControlPoint2() && appendPointData(KoPathPointData(path, nextIndex))) {
KoPathSegment cubic = KoPathSegment(point, nextPoint).toCubic();
if (nextPoint->activeControlPoint1()) {
point->setControlPoint2(cubic.first()->controlPoint2());
nextPoint->setControlPoint1(cubic.second()->controlPoint1());
} else
point->setControlPoint2(cubic.first()->controlPoint2());
}
break;
}
case Symmetric: {
properties &= ~KoPathPoint::IsSmooth;
properties |= KoPathPoint::IsSymmetric;
// calculate vector from node point to first control point and normalize it
QPointF directionC1 = point->controlPoint1() - point->point();
qreal dirLengthC1 = sqrt(directionC1.x() * directionC1.x() + directionC1.y() * directionC1.y());
directionC1 /= dirLengthC1;
// calculate vector from node point to second control point and normalize it
QPointF directionC2 = point->controlPoint2() - point->point();
qreal dirLengthC2 = sqrt(directionC2.x() * directionC2.x() + directionC2.y() * directionC2.y());
directionC2 /= dirLengthC2;
// calculate the average distance of the control points to the node point
qreal averageLength = 0.5 * (dirLengthC1 + dirLengthC2);
// compute position of the control points so that they lie on a line going through the node point
// the new distance of the control points is the average distance to the node point
point->setControlPoint1(point->point() + 0.5 * averageLength * (directionC1 - directionC2));
point->setControlPoint2(point->point() + 0.5 * averageLength * (directionC2 - directionC1));
}
break;
case Smooth: {
properties &= ~KoPathPoint::IsSymmetric;
properties |= KoPathPoint::IsSmooth;
// calculate vector from node point to first control point and normalize it
QPointF directionC1 = point->controlPoint1() - point->point();
qreal dirLengthC1 = sqrt(directionC1.x() * directionC1.x() + directionC1.y() * directionC1.y());
directionC1 /= dirLengthC1;
// calculate vector from node point to second control point and normalize it
QPointF directionC2 = point->controlPoint2() - point->point();
qreal dirLengthC2 = sqrt(directionC2.x() * directionC2.x() + directionC2.y() * directionC2.y());
directionC2 /= dirLengthC2;
// compute position of the control points so that they lie on a line going through the node point
// the new distance of the control points is the average distance to the node point
point->setControlPoint1(point->point() + 0.5 * dirLengthC1 * (directionC1 - directionC2));
point->setControlPoint2(point->point() + 0.5 * dirLengthC2 * (directionC2 - directionC1));
}
break;
case Corner:
default:
properties &= ~KoPathPoint::IsSymmetric;
properties &= ~KoPathPoint::IsSmooth;
break;
}
point->setProperties(properties);
}
repaint(true);
}