MuseScore/libmscore/tie.cpp
2018-12-18 14:55:54 +01:00

738 lines
25 KiB
C++

//=============================================================================
// MuseScore
// Music Composition & Notation
//
// Copyright (C) 2002-2013 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#include "measure.h"
#include "score.h"
#include "system.h"
#include "undo.h"
#include "chord.h"
#include "tie.h"
namespace Ms {
Note* Tie::editStartNote;
Note* Tie::editEndNote;
//---------------------------------------------------------
// updateGrips
// return grip rectangles in page coordinates
//---------------------------------------------------------
void TieSegment::updateGrips(EditData& ed) const
{
QPointF p(pagePos());
p -= QPointF(0.0, system()->staff(staffIdx())->y()); // ??
for (int i = 0; i < int(Grip::GRIPS); ++i)
ed.grip[i].translate(_ups[i].p + _ups[i].off + p);
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void TieSegment::draw(QPainter* painter) const
{
// hide tie toward the second chord of a cross-measure value
if (tie()->endNote() && tie()->endNote()->chord()->crossMeasure() == CrossMeasure::SECOND)
return;
QPen pen(curColor());
switch (slurTie()->lineType()) {
case 0:
painter->setBrush(QBrush(pen.color()));
pen.setCapStyle(Qt::RoundCap);
pen.setJoinStyle(Qt::RoundJoin);
pen.setWidthF(score()->styleP(Sid::SlurEndWidth));
break;
case 1:
painter->setBrush(Qt::NoBrush);
pen.setWidthF(score()->styleP(Sid::SlurDottedWidth));
pen.setStyle(Qt::DotLine);
break;
case 2:
painter->setBrush(Qt::NoBrush);
pen.setWidthF(score()->styleP(Sid::SlurDottedWidth));
pen.setStyle(Qt::DashLine);
break;
case 3:
painter->setBrush(Qt::NoBrush);
pen.setWidthF(score()->styleP(Sid::SlurDottedWidth));
pen.setStyle(Qt::CustomDashLine);
QVector<qreal> dashes { 5.0, 5.0 };
pen.setDashPattern(dashes);
break;
}
painter->setPen(pen);
painter->drawPath(path);
}
//---------------------------------------------------------
// edit
// return true if event is accepted
//---------------------------------------------------------
bool TieSegment::edit(EditData& ed)
{
SlurTie* sl = tie();
if (ed.key == Qt::Key_X) {
sl->setSlurDirection(sl->up() ? Direction::DOWN : Direction::UP);
sl->layout();
return true;
}
if (ed.key == Qt::Key_Home) {
ups(ed.curGrip).off = QPointF();
sl->layout();
return true;
}
return false;
}
//---------------------------------------------------------
// changeAnchor
//---------------------------------------------------------
void TieSegment::changeAnchor(EditData& ed, Element* element)
{
if (ed.curGrip == Grip::START) {
spanner()->setStartElement(element);
Note* note = toNote(element);
if (note->chord()->tick() <= tie()->endNote()->chord()->tick()) {
tie()->startNote()->setTieFor(0);
tie()->setStartNote(note);
note->setTieFor(tie());
}
}
else {
spanner()->setEndElement(element);
Note* note = toNote(element);
// do not allow backward ties
if (note->chord()->tick() >= tie()->startNote()->chord()->tick()) {
tie()->endNote()->setTieBack(0);
tie()->setEndNote(note);
note->setTieBack(tie());
}
}
const size_t segments = spanner()->spannerSegments().size();
ups(ed.curGrip).off = QPointF();
spanner()->layout();
if (spanner()->spannerSegments().size() != segments) {
const std::vector<SpannerSegment*>& ss = spanner()->spannerSegments();
TieSegment* newSegment = toTieSegment(ed.curGrip == Grip::END ? ss.back() : ss.front());
score()->endCmd();
score()->startCmd();
ed.view->startEdit(newSegment, ed.curGrip);
score()->setLayoutAll();
}
}
//---------------------------------------------------------
// editDrag
//---------------------------------------------------------
void TieSegment::editDrag(EditData& ed)
{
Grip g = ed.curGrip;
ups(g).off += ed.delta;
if (g == Grip::START || g == Grip::END) {
computeBezier();
//
// move anchor for slurs/ties
//
if ((g == Grip::START && isSingleBeginType()) || (g == Grip::END && isSingleEndType())) {
Spanner* spanner = tie();
Element* e = ed.view->elementNear(ed.pos);
Note* note = (e && e->isNote()) ? toNote(e) : nullptr;
if (note && ((g == Grip::END && note->tick() > tie()->tick()) || (g == Grip::START && note->tick() < tie()->tick2()))) {
if (g == Grip::END) {
Tie* tie = toTie(spanner);
if (tie->startNote()->pitch() == note->pitch()
&& tie->startNote()->chord()->tick() < note->chord()->tick()) {
ed.view->setDropTarget(note);
if (note != tie->endNote()) {
changeAnchor(ed, note);
return;
}
}
}
}
else
ed.view->setDropTarget(0);
}
}
else if (g == Grip::BEZIER1 || g == Grip::BEZIER2)
computeBezier();
else if (g == Grip::SHOULDER) {
ups(g).off = QPointF();
computeBezier(ed.delta);
}
else if (g == Grip::DRAG) {
ups(Grip::DRAG).off = QPointF();
roffset() += ed.delta;
}
// if this SlurSegment was automatically adjusted to avoid collision
// lock this edit by resetting SlurSegment to default position
// and incorporating previous adjustment into user offset
QPointF offset = getAutoAdjust();
if (!offset.isNull()) {
setAutoAdjust(0.0, 0.0);
roffset() += offset;
}
}
//---------------------------------------------------------
// computeBezier
// compute help points of slur bezier segment
//---------------------------------------------------------
void TieSegment::computeBezier(QPointF p6o)
{
qreal _spatium = spatium();
qreal shoulderW; // height as fraction of slur-length
qreal shoulderH;
//
// pp1 start of slur
// pp2 end of slur
// pp3 bezier 1
// pp4 bezier 2
// pp5 drag
// pp6 shoulder
//
QPointF pp1 = ups(Grip::START).p + ups(Grip::START).off;
QPointF pp2 = ups(Grip::END).p + ups(Grip::END).off;
QPointF p2 = pp2 - pp1; // normalize to zero
if (p2.x() == 0.0) {
qDebug("zero tie");
return;
}
qreal sinb = atan(p2.y() / p2.x());
QTransform t;
t.rotateRadians(-sinb);
p2 = t.map(p2);
p6o = t.map(p6o);
double smallH = 0.38;
qreal d = p2.x() / _spatium;
shoulderH = d * 0.4 * smallH;
shoulderH = qBound(0.4, shoulderH, 1.3);
shoulderH *= _spatium;
shoulderW = .6;
shoulderH -= p6o.y();
if (!tie()->up())
shoulderH = -shoulderH;
qreal c = p2.x();
qreal c1 = (c - c * shoulderW) * .5 + p6o.x();
qreal c2 = c1 + c * shoulderW + p6o.x();
QPointF p5 = QPointF(c * .5, 0.0);
QPointF p3(c1, -shoulderH);
QPointF p4(c2, -shoulderH);
qreal w = score()->styleP(Sid::SlurMidWidth) - score()->styleP(Sid::SlurEndWidth);
QPointF th(0.0, w); // thickness of slur
QPointF p3o = p6o + t.map(ups(Grip::BEZIER1).off);
QPointF p4o = p6o + t.map(ups(Grip::BEZIER2).off);
if(!p6o.isNull()) {
QPointF p6i = t.inverted().map(p6o);
ups(Grip::BEZIER1).off += p6i ;
ups(Grip::BEZIER2).off += p6i;
}
//-----------------------------------calculate p6
QPointF pp3 = p3 + p3o;
QPointF pp4 = p4 + p4o;
QPointF ppp4 = pp4 - pp3;
qreal r2 = atan(ppp4.y() / ppp4.x());
t.reset();
t.rotateRadians(-r2);
QPointF p6 = QPointF(t.map(ppp4).x() * .5, 0.0);
t.rotateRadians(2 * r2);
p6 = t.map(p6) + pp3 - p6o;
//-----------------------------------
path = QPainterPath();
path.moveTo(QPointF());
path.cubicTo(p3 + p3o - th, p4 + p4o - th, p2);
if (tie()->lineType() == 0)
path.cubicTo(p4 +p4o + th, p3 + p3o + th, QPointF());
th = QPointF(0.0, 3.0 * w);
shapePath = QPainterPath();
shapePath.moveTo(QPointF());
shapePath.cubicTo(p3 + p3o - th, p4 + p4o - th, p2);
shapePath.cubicTo(p4 +p4o + th, p3 + p3o + th, QPointF());
// translate back
t.reset();
t.translate(pp1.x(), pp1.y());
t.rotateRadians(sinb);
path = t.map(path);
shapePath = t.map(shapePath);
ups(Grip::BEZIER1).p = t.map(p3);
ups(Grip::BEZIER2).p = t.map(p4);
ups(Grip::END).p = t.map(p2) - ups(Grip::END).off;
ups(Grip::DRAG).p = t.map(p5);
ups(Grip::SHOULDER).p = t.map(p6);
// QPointF staffOffset;
// if (system() && track() >= 0)
// staffOffset = QPointF(0.0, -system()->staff(staffIdx())->y());
// path.translate(staffOffset);
// shapePath.translate(staffOffset);
QPainterPath p;
p.moveTo(QPointF());
p.cubicTo(p3 + p3o, p4 + p4o, p2);
_shape.clear();
QPointF start;
start = t.map(start);
qreal minH = qAbs(3.0 * w);
int nbShapes = 15;
for (int i = 1; i <= nbShapes; i++) {
QPointF point = t.map(p.pointAtPercent(i/float(nbShapes)));
QRectF re = QRectF(start, point).normalized();
if (re.height() < minH) {
d = (minH - re.height()) * .5;
re.adjust(0.0, -d, 0.0, d);
}
_shape.add(re);
start = point;
}
}
//---------------------------------------------------------
// layout
// p1, p2 are in System coordinates
//---------------------------------------------------------
void TieSegment::layoutSegment(const QPointF& p1, const QPointF& p2)
{
setPos(QPointF());
ups(Grip::START).p = p1;
ups(Grip::END).p = p2;
computeBezier();
QRectF bbox = path.boundingRect();
// adjust position to avoid staff line if necessary
Staff* st = staff();
bool reverseAdjust = false;
if (slurTie()->isTie() && st && !st->isTabStaff(slurTie()->tick())) {
// multinote chords with ties need special handling
// otherwise, adjusted tie might crowd an unadjusted tie unnecessarily
Tie* t = toTie(slurTie());
Note* sn = t->startNote();
Chord* sc = sn ? sn->chord() : 0;
// normally, the adjustment moves ties according to their direction (eg, up if tie is up)
// but we will reverse this for notes within chords when appropriate
// for two-note chords, it looks better to have notes on spaces tied outside the lines
if (sc) {
size_t notes = sc->notes().size();
bool onLine = !(sn->line() & 1);
if ((onLine && notes > 1) || (!onLine && notes > 2))
reverseAdjust = true;
}
}
qreal sp = spatium();
qreal minDistance = 0.5;
autoAdjustOffset = QPointF();
if (bbox.height() < minDistance * 2 * sp && st && !st->isTabStaff(slurTie()->tick())) {
// slur/tie is fairly flat
bool up = slurTie()->up();
qreal ld = st->lineDistance(tick()) * sp;
qreal topY = bbox.top() / ld;
qreal bottomY = bbox.bottom() / ld;
int lineY = up ? qRound(topY) : qRound(bottomY);
if (lineY >= 0 && lineY < st->lines(tick()) * st->lineDistance(tick())) {
// on staff
if (qAbs(topY - lineY) < minDistance && qAbs(bottomY - lineY) < minDistance) {
// too close to line
if (!isNudged() && !isEdited()) {
// user has not nudged or edited
qreal offY;
if (up != reverseAdjust) // exclusive or
offY = (lineY - minDistance) - topY;
else
offY = (lineY + minDistance) - bottomY;
setAutoAdjust(0.0, offY * sp);
}
}
}
}
setbbox(path.boundingRect());
}
//---------------------------------------------------------
// setAutoAdjust
//---------------------------------------------------------
void TieSegment::setAutoAdjust(const QPointF& offset)
{
QPointF diff = offset - autoAdjustOffset;
if (!diff.isNull()) {
path.translate(diff);
shapePath.translate(diff);
_shape.translate(diff);
for (int i = 0; i < int(Grip::GRIPS); ++i)
_ups[i].p += diff;
autoAdjustOffset = offset;
}
}
//---------------------------------------------------------
// isEdited
//---------------------------------------------------------
bool TieSegment::isEdited() const
{
for (int i = 0; i < int(Grip::GRIPS); ++i) {
if (!_ups[i].off.isNull())
return true;
}
return false;
}
//---------------------------------------------------------
// slurPos
// Calculate position of start- and endpoint of slur
// relative to System() position.
//---------------------------------------------------------
void Tie::slurPos(SlurPos* sp)
{
bool useTablature = staff() && staff()->isTabStaff(tick());
const StaffType* stt = useTablature ? staff()->staffType(tick()) : 0;
qreal _spatium = spatium();
qreal hw = startNote()->tabHeadWidth(stt); // if stt == 0, defaults to headWidth()
qreal __up = _up ? -1.0 : 1.0;
// y offset for ties inside chord margins (typically multi-note chords): lined up with note top or bottom margin
// or outside (typically single-note chord): overlaps note and is above/below it
// Outside: Tab: uses font size and may be asymmetric placed above/below line (frets ON or ABOVE line)
// Std: assumes notehead is 1 sp high, 1/2 sp above and 1/2 below line; add 1/4 sp to it
// Inside: Tab: 1/2 of Outside offset
// Std: use a fixed pecentage of note width
qreal yOffOutside = useTablature
? (_up ? stt->fretBoxY() : stt->fretBoxY() + stt->fretBoxH()) * magS()
: 0.75 * _spatium * __up;
qreal yOffInside = useTablature ? yOffOutside * 0.5 : hw * .3 * __up;
Chord* sc = startNote()->chord();
sp->system1 = sc->measure()->system();
if (!sp->system1) {
Measure* m = sc->measure();
qDebug("No system: measure is %d has %d count %d", m->isMMRest(), m->hasMMRest(), m->mmRestCount());
}
qreal xo;
qreal yo;
bool shortStart = false;
// determine attachment points
// similar code is used in Chord::layoutPitched()
// to allocate extra space to enforce minTieLength
// so keep these in sync
sp->p1 = sc->pos() + sc->segment()->pos() + sc->measure()->pos();
//------p1
if ((sc->notes().size() > 1) || (sc->stem() && (sc->up() == _up))) {
xo = startNote()->x() + hw * 1.12;
yo = startNote()->pos().y() + yOffInside;
shortStart = true;
}
else {
xo = startNote()->x() + hw * 0.65;
yo = startNote()->pos().y() + yOffOutside;
}
sp->p1 += QPointF(xo, yo);
//------p2
if (endNote() == 0) {
sp->p2 = sp->p1 + QPointF(_spatium * 3, 0.0);
sp->system2 = sp->system1;
return;
}
Chord* ec = endNote()->chord();
sp->p2 = ec->pos() + ec->segment()->pos() + ec->measure()->pos();
if ((sc->measure() == sp->system1->lastMeasure()) && (ec->measure() != sc->measure()))
sp->system2 = nullptr;
else
sp->system2 = ec->measure()->system();
hw = endNote()->tabHeadWidth(stt);
if ((ec->notes().size() > 1) || (ec->stem() && !ec->up() && !_up))
xo = endNote()->x() - hw * 0.12;
else if (shortStart)
xo = endNote()->x() + hw * 0.15;
else
xo = endNote()->x() + hw * 0.35;
sp->p2 += QPointF(xo, yo);
}
//---------------------------------------------------------
// Tie
//---------------------------------------------------------
Tie::Tie(Score* s)
: SlurTie(s)
{
setAnchor(Anchor::NOTE);
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
void Tie::write(XmlWriter& xml) const
{
xml.stag(this);
SlurTie::writeProperties(xml);
xml.etag();
}
//---------------------------------------------------------
// calculateDirection
//---------------------------------------------------------
void Tie::calculateDirection()
{
Chord* c1 = startNote()->chord();
Chord* c2 = endNote()->chord();
Measure* m1 = c1->measure();
Measure* m2 = c2->measure();
if (_slurDirection == Direction::AUTO) {
std::vector<Note*> notes = c1->notes();
size_t n = notes.size();
if (m1->hasVoices(c1->staffIdx()) || m2->hasVoices(c2->staffIdx())) {
// in polyphonic passage, ties go on the stem side
_up = c1->up();
}
else if (n == 1) {
//
// single note
//
if (c1->up() != c2->up()) {
// if stem direction is mixed, always up
_up = true;
}
else
_up = !c1->up();
}
else {
//
// chords
//
QList<int> ties;
int idx = 0;
int noteIdx = -1;
for (size_t i = 0; i < n; ++i) {
if (notes[i]->tieFor()) {
ties.append(notes[i]->line());
if (notes[i] == startNote()) {
idx = ties.size() - 1;
noteIdx = int(i);
}
}
}
if (idx == 0) {
if (ties.size() == 1) // if just one tie
_up = noteIdx != 0; // it is up if not the bottom note of the chord
else // if several ties and this is the bottom one (idx == 0)
_up = false; // it is down
}
else if (idx == ties.size() - 1)
_up = true;
else {
if (ties[idx] <= 4)
_up = ((ties[idx-1] - ties[idx]) <= 1) || ((ties[idx] - ties[idx+1]) > 1);
else
_up = ((ties[idx-1] - ties[idx]) <= 1) && ((ties[idx] - ties[idx+1]) > 1);
}
}
}
else
_up = _slurDirection == Direction::UP ? true : false;
}
//---------------------------------------------------------
// layoutFor
// layout the first SpannerSegment of a slur
//---------------------------------------------------------
TieSegment* Tie::layoutFor(System* system)
{
//
// show short bow
//
if (startNote() == 0 || endNote() == 0) {
if (startNote() == 0) {
qDebug("no start note");
return 0;
}
Chord* c1 = startNote()->chord();
if (_slurDirection == Direction::AUTO) {
if (c1->measure()->hasVoices(c1->staffIdx())) {
// in polyphonic passage, ties go on the stem side
_up = c1->up();
}
else
_up = !c1->up();
}
else
_up = _slurDirection == Direction::UP ? true : false;
fixupSegments(1);
TieSegment* segment = segmentAt(0);
segment->setSpannerSegmentType(SpannerSegmentType::SINGLE);
segment->setSystem(startNote()->chord()->segment()->measure()->system());
SlurPos sPos;
slurPos(&sPos);
segment->layoutSegment(sPos.p1, sPos.p2);
return segment;
}
calculateDirection();
SlurPos sPos;
slurPos(&sPos);
setPos(0, 0);
int n;
if (sPos.system1 != sPos.system2) {
n = 2;
sPos.p2 = QPointF(system->width(), sPos.p1.y());
}
else
n = 1;
fixupSegments(n);
TieSegment* segment = segmentAt(0);
segment->setSystem(system); // Needed to populate System.spannerSegments
segment->layoutSegment(sPos.p1, sPos.p2);
segment->setSpannerSegmentType(sPos.system1 != sPos.system2 ? SpannerSegmentType::BEGIN : SpannerSegmentType::SINGLE);
return segment;
}
//---------------------------------------------------------
// layoutBack
// layout the second SpannerSegment of a split slur
//---------------------------------------------------------
TieSegment* Tie::layoutBack(System* system)
{
SlurPos sPos;
slurPos(&sPos);
fixupSegments(2);
TieSegment* segment = segmentAt(1);
segment->setSystem(system);
qreal x;
Segment* seg = endNote()->chord()->segment()->prev();
if (seg) {
// find maximum width
qreal width = 0.0;
int n = score()->nstaves();
for (int i = 0; i < n; ++i) {
if (!system->staff(i)->show())
continue;
Element* e = seg->element(i * VOICES);
if (e)
width = qMax(width, e->width());
}
x = seg->measure()->pos().x() + seg->pos().x() + width;
}
else
x = 0.0;
segment->layoutSegment(QPointF(x, sPos.p2.y()), sPos.p2);
segment->setSpannerSegmentType(SpannerSegmentType::END);
return segment;
}
#if 0
//---------------------------------------------------------
// startEdit
//---------------------------------------------------------
void Tie::startEdit(EditData& ed)
{
printf("tie start edit %p %p\n", editStartNote, editEndNote);
editStartNote = startNote();
editEndNote = endNote();
SlurTie::startEdit(ed);
}
//---------------------------------------------------------
// endEdit
//---------------------------------------------------------
void Tie::endEdit(EditData& ed)
{
//printf("tie::endEdit\n");
// if (editStartNote != startNote() || editEndNote != endNote()) {
// score()->undoStack()->push1(new ChangeSpannerElements(this, editStartNote, editEndNote));
// }
SlurTie::endEdit(ed);
}
#endif
//---------------------------------------------------------
// setStartNote
//---------------------------------------------------------
void Tie::setStartNote(Note* note)
{
setStartElement(note);
setParent(note);
}
//---------------------------------------------------------
// startNote
//---------------------------------------------------------
Note* Tie::startNote() const
{
Q_ASSERT(!startElement() || startElement()->type() == ElementType::NOTE);
return toNote(startElement());
}
//---------------------------------------------------------
// endNote
//---------------------------------------------------------
Note* Tie::endNote() const
{
return toNote(endElement());
}
}