void KarbonCalligraphicShape::addCap(int index1, int index2, int pointIndex,
bool inverted)
{
QPointF p1 = m_points[index1]->point();
QPointF p2 = m_points[index2]->point();
// TODO: review why spikes can appear with a lower limit
QPointF delta = p2 - p1;
if (delta.manhattanLength() < 1.0)
return;
QPointF direction = QLineF(QPointF(0, 0), delta).unitVector().p2();
qreal width = m_points[index2]->width();
QPointF p = p2 + direction * m_caps * width;
KoPathPoint * newPoint = new KoPathPoint(this, p);
qreal angle = m_points[index2]->angle();
if (inverted)
angle += M_PI;
qreal dx = std::cos(angle) * width;
qreal dy = std::sin(angle) * width;
newPoint->setControlPoint1(QPointF(p.x() - dx / 2, p.y() - dy / 2));
newPoint->setControlPoint2(QPointF(p.x() + dx / 2, p.y() + dy / 2));
insertPoint(newPoint, KoPathPointIndex(0, pointIndex));
}
void KoPathPointInsertCommand::undo()
{
QUndoCommand::undo();
for (int i = 0; i < m_pointDataList.size(); ++i) {
const KoPathPointData &pdBefore = m_pointDataList.at(i);
KoPathShape * pathShape = pdBefore.pathShape;
KoPathPointIndex piAfter = pdBefore.pointIndex;
++piAfter.second;
KoPathPoint * before = pathShape->pointByIndex(pdBefore.pointIndex);
m_points[i] = pathShape->removePoint(piAfter);
if (m_points[i]->properties() & KoPathPoint::CloseSubpath) {
piAfter.second = 0;
}
KoPathPoint * after = pathShape->pointByIndex(piAfter);
if (before->activeControlPoint2()) {
QPointF controlPoint2 = before->controlPoint2();
qSwap(controlPoint2, m_controlPoints[i].first);
before->setControlPoint2(controlPoint2);
}
if (after->activeControlPoint1()) {
QPointF controlPoint1 = after->controlPoint1();
qSwap(controlPoint1, m_controlPoints[i].second);
after->setControlPoint1(controlPoint1);
}
pathShape->update();
}
m_deletePoints = true;
}
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();
}
}
void KoPathPointTypeCommand::undoChanges(const QList<PointData> &data)
{
QList<PointData>::const_iterator it(data.begin());
for (; it != data.end(); ++it) {
KoPathShape *pathShape = it->m_pointData.pathShape;
KoPathPoint *point = pathShape->pointByIndex(it->m_pointData.pointIndex);
point->setProperties(it->m_oldProperties);
if (it->m_hadControlPoint1)
point->setControlPoint1(pathShape->documentToShape(it->m_oldControlPoint1));
else
point->removeControlPoint1();
if (it->m_hadControlPoint2)
point->setControlPoint2(pathShape->documentToShape(it->m_oldControlPoint2));
else
point->removeControlPoint2();
}
}
KoPathPointInsertCommand::KoPathPointInsertCommand(const QList<KoPathPointData> & pointDataList, qreal insertPosition, QUndoCommand *parent)
: QUndoCommand(parent)
, m_deletePoints(true)
{
if (insertPosition < 0)
insertPosition = 0;
if (insertPosition > 1)
insertPosition = 1;
//TODO the list needs to be sorted
QList<KoPathPointData>::const_iterator it(pointDataList.begin());
for (; it != pointDataList.end(); ++it) {
KoPathShape * pathShape = it->pathShape;
KoPathSegment segment = pathShape->segmentByIndex(it->pointIndex);
// should not happen but to be sure
if (! segment.isValid())
continue;
m_pointDataList.append(*it);
QPair<KoPathSegment, KoPathSegment> splitSegments = segment.splitAt( insertPosition );
KoPathPoint * split1 = splitSegments.first.second();
KoPathPoint * split2 = splitSegments.second.first();
KoPathPoint * splitPoint = new KoPathPoint( pathShape, split1->point() );
if( split1->activeControlPoint1() )
splitPoint->setControlPoint1(split1->controlPoint1());
if( split2->activeControlPoint2() )
splitPoint->setControlPoint2(split2->controlPoint2());
m_points.append(splitPoint);
QPointF cp1 = splitSegments.first.first()->controlPoint2();
QPointF cp2 = splitSegments.second.second()->controlPoint1();
m_controlPoints.append(QPair<QPointF, QPointF>(cp1, cp2));
}
}
void KarbonWhirlPinchCommand::redo()
{
d->pathShape->update();
uint subpathCount = d->pathData.count();
for( uint subpathIndex = 0; subpathIndex < subpathCount; ++subpathIndex )
{
uint pointCount = d->pathData[subpathIndex].count();
for( uint pointIndex = 0; pointIndex < pointCount; ++pointIndex )
{
KoPathPoint * p = d->pathShape->pointByIndex( KoPathPointIndex( subpathIndex, pointIndex ) );
p->setPoint( d->whirlPinch( p->point() ) );
if( p->activeControlPoint1() )
p->setControlPoint1( d->whirlPinch( p->controlPoint1() ) );
if( p->activeControlPoint2() )
p->setControlPoint2( d->whirlPinch( p->controlPoint2() ) );
}
}
d->pathShape->normalize();
d->pathShape->update();
QUndoCommand::redo();
}
void KarbonCalligraphicShape::addCap(int index1, int index2, int pointIndex,
bool inverted)
{
QPointF p1 = m_points[index1]->point();
QPointF p2 = m_points[index2]->point();
qreal width = m_points[index2]->width();
QPointF direction = QLineF(QPointF(0, 0), p2 - p1).unitVector().p2();
QPointF p = p2 + direction * m_caps * width;
KoPathPoint * newPoint = new KoPathPoint(this, p);
qreal angle = m_points[index2]->angle();
if (inverted)
angle += M_PI;
qreal dx = std::cos(angle) * width;
qreal dy = std::sin(angle) * width;
newPoint->setControlPoint1(QPointF(p.x() - dx / 2, p.y() - dy / 2));
newPoint->setControlPoint2(QPointF(p.x() + dx / 2, p.y() + dy / 2));
insertPoint(newPoint, KoPathPointIndex(0, pointIndex));
}
void RoundCornersCommand::roundPath()
{
/*
* This algorithm is worked out by <kudling AT kde DOT org> to produce similar results as
* the "round corners" algorithms found in other applications. Neither code nor
* algorithms from any 3rd party is used though.
*
* We want to replace all corners with round corners having "radius" m_radius.
* The algorithm doesn't really produce circular arcs, but that's ok since
* the algorithm achieves nice looking results and is generic enough to be applied
* to all kind of paths.
* Note also, that this algorithm doesn't touch smooth joins (in the sense of
* KoPathPoint::isSmooth() ).
*
* We'll manipulate the input path for bookkeeping purposes and construct a new
* temporary path in parallel. We finally replace the input path with the new path.
*
*
* Without restricting generality, let's assume the input path is closed and
* contains segments which build a rectangle.
*
* 2
* O------------O
* | | Numbers reflect the segments' order
* 3| |1 in the path. We neglect the "begin"
* | | segment here.
* O------------O
* 0
*
* There are three unique steps to process. The second step is processed
* many times in a loop.
*
* 1) Begin
* -----
* Split the first segment of the input path (called "path[0]" here)
* at parameter t
*
* t = path[0]->param( m_radius )
*
* and move newPath to this new knot. If current segment is too small
* (smaller than 2 * m_radius), we always set t = 0.5 here and in the further
* steps as well.
*
* path: new path:
*
* 2
* O------------O
* | |
* 3 | | 1 The current segment is marked with "#"s.
* | |
* O##O#########O ...O
* 0 0
*
* 2) Loop
* ----
* The loop step is iterated over all segments. After each appliance the index n
* is incremented and the loop step is reapplied until no untouched segment is left.
*
* Split the current segment path[n] of the input path at parameter t
*
* t = path[n]->param( path[n]->length() - m_radius )
*
* and add the first subsegment of the curent segment to newPath.
*
* path: new path:
*
* 2
* O------------O
* | |
* 3 | | 1
* | |
* O--O######O##O O------O...
* 0 0
*
* Now make the second next segment (the original path[1] segment in our example)
* the current one. Split it at parameter t
*
* t = path[n]->param( m_radius )
*
* path: new path:
*
* 2
* O------------O
* | #
* 3 | O 1
* | #
* O--O------O--O O------O...
* 0 0
*
* Make the first subsegment of the current segment the current one.
*
* path: new path:
*
* 2
* O------------O
* | |
* 3 | O 1 O
* | # /.1
* O--O------O--O O------O...
* 0 0
*
* 3) End
* ---
*
* path: new path:
*
* 2 4
* O--O------O--O 5 .O------O. 3
* | | / \
* 3 O O 1 6 O O 2
* | | 7 .\ /
* O--O------O--O ...O------O. 1
* 0 0
*/
// TODO: not sure if we should only touch flat segment joins as the original algorithm
m_path->clear();
int subpathCount = m_copy->subpathCount();
for( int subpathIndex = 0; subpathIndex < subpathCount; ++subpathIndex )
{
int pointCount = m_copy->pointCountSubpath( subpathIndex );
if( ! pointCount )
continue;
// check if we have sufficient number of points
if( pointCount < 3 )
{
// copy the only segment
KoPathSegment s = m_copy->segmentByIndex( KoPathPointIndex( subpathIndex, 0 ) );
m_path->moveTo( m_copy->pointByIndex( KoPathPointIndex( subpathIndex, 0 ) )->point() );
addSegment( m_path, s );
continue;
}
KoPathSegment prevSeg = m_copy->segmentByIndex( KoPathPointIndex( subpathIndex, pointCount-1 ) );
KoPathSegment nextSeg = m_copy->segmentByIndex( KoPathPointIndex( subpathIndex, 0 ) );
KoPathSegment lastSeg;
KoPathPoint * currPoint = nextSeg.first();
KoPathPoint * firstPoint = 0;
KoPathPoint * lastPoint = 0;
// check if first path point is a smooth join with the closing segment
bool firstPointIsCorner = m_copy->isClosedSubpath( subpathIndex )
&& ! currPoint->isSmooth( prevSeg.first(), nextSeg.second() );
// Begin: take care of the first path point
if( firstPointIsCorner )
{
// split the previous segment at length - radius
qreal prevLength = prevSeg.length();
qreal prevSplit = prevLength > m_radius ? prevSeg.paramAtLength( prevLength-m_radius ) : 0.5;
QPair<KoPathSegment,KoPathSegment> prevParts = prevSeg.splitAt( prevSplit );
// split the next segment at radius
qreal nextLength = nextSeg.length();
qreal nextSplit = nextLength > m_radius ? nextSeg.paramAtLength( m_radius ) : 0.5;
QPair<KoPathSegment,KoPathSegment> nextParts = nextSeg.splitAt( nextSplit );
// calculate smooth tangents
QPointF P0 = prevParts.first.second()->point();
QPointF P3 = nextParts.first.second()->point();
qreal tangentLength1 = 0.5 * QLineF( P0, currPoint->point() ).length();
qreal tangentLength2 = 0.5 * QLineF( P3, currPoint->point() ).length();
QPointF P1 = P0 - tangentLength1 * tangentAtEnd( prevParts.first );
QPointF P2 = P3 - tangentLength2 * tangentAtStart( nextParts.second );
// start the subpath
firstPoint = m_path->moveTo( prevParts.second.first()->point() );
// connect the split points with curve
// TODO: shall we create a correct arc?
m_path->curveTo( P1, P2, P3 );
prevSeg = nextParts.second;
lastSeg = prevParts.first;
}
else
{
firstPoint = m_path->moveTo( currPoint->point() );
prevSeg = nextSeg;
}
// Loop:
for( int pointIndex = 1; pointIndex < pointCount; ++pointIndex )
{
nextSeg = m_copy->segmentByIndex( KoPathPointIndex( subpathIndex, pointIndex ) );
if( ! nextSeg.isValid() )
break;
currPoint = nextSeg.first();
if( ! currPoint )
continue;
if( currPoint->isSmooth( prevSeg.first(), nextSeg.second() ) )
{
// the current point has a smooth join, so we can add the previous segment
// to our new path
addSegment( m_path, prevSeg );
prevSeg = nextSeg;
}
else
{
// split the previous segment at length - radius
qreal prevLength = prevSeg.length();
qreal prevSplit = prevLength > m_radius ? prevSeg.paramAtLength( prevLength-m_radius ) : 0.5;
QPair<KoPathSegment,KoPathSegment> prevParts = prevSeg.splitAt( prevSplit );
// add the remaining part up to the split point of the pervious segment
lastPoint = addSegment( m_path, prevParts.first );
// split the next segment at radius
qreal nextLength = nextSeg.length();
qreal nextSplit = nextLength > m_radius ? nextSeg.paramAtLength( m_radius ) : 0.5;
QPair<KoPathSegment,KoPathSegment> nextParts = nextSeg.splitAt( nextSplit );
// calculate smooth tangents
QPointF P0 = prevParts.first.second()->point();
QPointF P3 = nextParts.first.second()->point();
qreal tangentLength1 = 0.5 * QLineF( P0, currPoint->point() ).length();
qreal tangentLength2 = 0.5 * QLineF( P3, currPoint->point() ).length();
QPointF P1 = P0 - tangentLength1 * tangentAtEnd( prevParts.first );
QPointF P2 = P3 - tangentLength2 * tangentAtStart( nextParts.second );
// connect the split points with curve
// TODO: shall we create a correct arc?
lastPoint = m_path->curveTo( P1, P2, P3 );
prevSeg = nextParts.second;
}
}
// End: take care of the last path point
if( firstPointIsCorner )
{
// construct the closing segment
lastPoint->setProperty( KoPathPoint::CloseSubpath );
firstPoint->setProperty( KoPathPoint::CloseSubpath );
switch( lastSeg.degree() )
{
case 1:
lastPoint->removeControlPoint2();
firstPoint->removeControlPoint1();
break;
case 2:
if( lastSeg.first()->activeControlPoint2() )
{
lastPoint->setControlPoint2( lastSeg.first()->controlPoint2() );
firstPoint->removeControlPoint1();
}
else
{
lastPoint->removeControlPoint2();
firstPoint->setControlPoint1( lastSeg.second()->controlPoint1() );
}
break;
case 3:
lastPoint->setControlPoint2( lastSeg.first()->controlPoint2() );
firstPoint->setControlPoint1( lastSeg.second()->controlPoint1() );
break;
}
}
else
{
// add the last remaining segment
addSegment( m_path, prevSeg );
}
}
}
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);
}
