void Slur::slurPos(SlurPos* sp)
{
qreal _spatium = spatium();
Element* e1 = startElement();
Element* e2 = endElement();
if (e2 == 0) {
sp->p1 = e1->pagePos();
sp->p1.rx() += e1->width();
sp->p2 = sp->p1;
sp->p2.rx() += 5 * _spatium;
sp->system1 = static_cast<ChordRest*>(e1)->measure()->system();
sp->system2 = sp->system1;
return;
}
if ((e1->type() != CHORD) || (e2->type() != CHORD)) {
sp->p1 = e1->pagePos();
sp->p2 = e2->pagePos();
sp->p1.rx() += e1->width();
sp->p2.rx() += e2->width();
sp->system1 = static_cast<ChordRest*>(e1)->measure()->system();
sp->system2 = static_cast<ChordRest*>(e2)->measure()->system();
return;
}
Chord* sc = static_cast<Chord*>(e1);
Chord* ec = static_cast<Chord*>(e2);
Note* note1 = _up ? sc->upNote() : sc->downNote();
Note* note2 = _up ? ec->upNote() : ec->downNote();
sp->system1 = sc->measure()->system();
sp->system2 = ec->measure()->system();
sp->p1 = sc->pagePos() - sp->system1->pagePos();
sp->p2 = ec->pagePos() - sp->system2->pagePos();
qreal xo, yo;
Stem* stem1 = sc->stem();
Stem* stem2 = ec->stem();
enum SlurAnchor {
SA_NONE, SA_STEM
};
SlurAnchor sa1 = SA_NONE;
SlurAnchor sa2 = SA_NONE;
if ((sc->up() == ec->up()) && !sc->beam() && !ec->beam() && (_up == sc->up())) {
if (stem1)
sa1 = SA_STEM;
if (stem2)
sa2 = SA_STEM;
}
qreal __up = _up ? -1.0 : 1.0;
qreal hw = note1->headWidth();
switch (sa1) {
case SA_STEM:
sp->p1 += sc->stemPosBeam() - sc->pagePos() + sc->stem()->p2();
sp->p1 += QPointF(0.35 * _spatium, 0.25 * _spatium);
break;
case SA_NONE:
break;
}
switch(sa2) {
case SA_STEM:
sp->p2 += ec->stemPosBeam() - ec->pagePos() + ec->stem()->p2();
sp->p2 += QPointF(-0.35 * _spatium, 0.25 * _spatium);
break;
case SA_NONE:
break;
}
//
// default position:
// horizontal: middle of note head
// vertical: _spatium * .4 above/below note head
//
//------p1
bool stemPos = false; // p1 starts at chord stem side
yo = note1->pos().y() + _spatium * .9 * __up;
xo = hw * .5;
if (stem1) {
Beam* beam1 = sc->beam();
if (beam1 && (beam1->elements().back() != sc) && (sc->up() == _up)) {
qreal sh = stem1->height() + _spatium;
yo = sc->downNote()->pos().y() + sh * __up;
xo = stem1->pos().x();
stemPos = true;
}
else {
if (sc->up() && _up)
xo = hw + _spatium * .3;
//
// handle case: stem up - stem down
// stem down - stem up
//
if ((sc->up() != ec->up()) && (sc->up() == _up)) {
Note* n1 = sc->up() ? sc->downNote() : sc->upNote();
Note* n2 = ec->up() ? ec->downNote() : ec->upNote();
qreal yd = n2->pos().y() - n1->pos().y();
yd *= .5;
qreal sh = stem1->height(); // limit y move
if (yd > 0.0) {
if (yd > sh)
yd = sh;
}
else {
if (yd < - sh)
yd = -sh;
}
stemPos = true;
if ((_up && (yd < -_spatium)) || (!_up && (yd > _spatium)))
yo += yd;
}
else if (sc->up() != _up)
yo = fixArticulations(yo, sc, __up);
}
}
if (sa1 == SA_NONE)
sp->p1 += QPointF(xo, yo);
//------p2
xo = hw * .5;
yo = note2->pos().y() + _spatium * .9 * __up;
if (stem2) {
Beam* beam2 = ec->beam();
if ((stemPos && (sc->up() == ec->up()))
|| (beam2
&& (!beam2->elements().isEmpty())
&& (beam2->elements().front() != ec)
&& (ec->up() == _up)
&& (sc->noteType() == NOTE_NORMAL)
)
) {
qreal sh = stem2->height() + _spatium;
if (_up)
yo = ec->downNote()->pos().y() - sh;
else
yo = ec->upNote()->pos().y() + sh;
xo = stem2->pos().x();
}
else if (!ec->up() && !_up)
xo = -_spatium * .3 + note2->x();
//
// handle case: stem up - stem down
// stem down - stem up
//
if ((sc->up() != ec->up()) && (ec->up() == _up)) {
Note* n1 = sc->up() ? sc->downNote() : sc->upNote();
Note* n2 = ec->up() ? ec->downNote() : ec->upNote();
qreal yd = n2->pos().y() - n1->pos().y();
yd *= .5;
qreal mh = stem2->height(); // limit y move
if (yd > 0.0) {
if (yd > mh)
yd = mh;
}
else {
if (yd < - mh)
yd = -mh;
}
if ((_up && (yd > _spatium)) || (!_up && (yd < -_spatium)))
yo -= yd;
}
else if (ec->up() != _up)
yo = fixArticulations(yo, ec, __up);
}
if (sa2 == SA_NONE)
sp->p2 += QPointF(xo, yo);
}
