void SLine::layout()
{
if (parent() == 0) {
//
// when used in a palette, SLine has no parent and
// tick and tick2 has no meaning so no layout is
// possible and needed
//
if (!spannerSegments().isEmpty()) {
LineSegment* s = frontSegment();
s->layout();
setbbox(s->bbox());
}
return;
}
if (startElement() == 0 || endElement() == 0) {
qDebug("SLine::layout() failed: %s %s\n", parent()->name(), name());
qDebug(" start %p end %p\n", startElement(), endElement());
return;
}
System* s1;
System* s2;
QPointF p1 = linePos(GRIP_LINE_START, &s1);
QPointF p2 = linePos(GRIP_LINE_END, &s2);
QList<System*>* systems = score()->systems();
int sysIdx1 = systems->indexOf(s1);
int sysIdx2 = systems->indexOf(s2);
int segmentsNeeded = 0;
for (int i = sysIdx1; i < sysIdx2+1; ++i) {
if (systems->at(i)->isVbox())
continue;
++segmentsNeeded;
}
int segCount = spannerSegments().size();
if (segmentsNeeded != segCount) {
if (segmentsNeeded > segCount) {
int n = segmentsNeeded - segCount;
for (int i = 0; i < n; ++i) {
LineSegment* ls = createLineSegment();
add(ls);
// set user offset to previous segment's offset
if (segCount > 0)
ls->setUserOff(QPointF(0, segmentAt(segCount+i-1)->userOff().y()));
}
}
else {
int n = segCount - segmentsNeeded;
qDebug("SLine: segments %d needed %d, remove %d\n", segCount, segmentsNeeded, n);
for (int i = 0; i < n; ++i) {
if (spannerSegments().isEmpty()) {
qDebug("SLine::layout(): no segment %d, %d expected\n", i, n);
break;
}
else {
// LineSegment* seg = takeLastSegment();
// TODO delete seg;
}
}
}
}
int segIdx = 0;
int si = staffIdx();
for (int i = sysIdx1; i <= sysIdx2; ++i) {
System* system = systems->at(i);
if (system->isVbox())
continue;
LineSegment* seg = segmentAt(segIdx++);
seg->setSystem(system);
Measure* m = system->firstMeasure();
qreal x1 = m->first(SegChordRest)->pos().x() + m->pos().x();
qreal x2 = system->bbox().right();
qreal y = system->staff(si)->y();
if (sysIdx1 == sysIdx2) {
// single segment
seg->setSubtype(SEGMENT_SINGLE);
seg->setPos(p1);
seg->setPos2(QPointF(p2.x() - p1.x(), 0.0));
}
else if (i == sysIdx1) {
// start segment
seg->setSubtype(SEGMENT_BEGIN);
seg->setPos(p1);
seg->setPos2(QPointF(x2 - p1.x(), 0.0));
}
else if (i > 0 && i != sysIdx2) {
// middle segment
seg->setSubtype(SEGMENT_MIDDLE);
seg->setPos(QPointF(x1, y));
seg->setPos2(QPointF(x2 - x1, 0.0));
}
else if (i == sysIdx2) {
// end segment
seg->setSubtype(SEGMENT_END);
seg->setPos(QPointF(x1, y));
seg->setPos2(QPointF(p2.x() - x1, 0.0));
}
seg->layout();
seg->rypos() += (_yoffset * spatium());
seg->adjustReadPos();
}
}
