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MuseScore/libmscore/timesig.cpp

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//=============================================================================
// MuseScore
// Music Composition & Notation
// $Id: timesig.cpp 5568 2012-04-22 10:08:43Z wschweer $
//
// Copyright (C) 2002-2011 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 "timesig.h"
#include "xml.h"
#include "score.h"
#include "style.h"
#include "sym.h"
#include "symbol.h"
#include "staff.h"
#include "stafftype.h"
//---------------------------------------------------------
// TimeSig
// Constructs an invalid time signature element.
// After construction first call setTrack() then
// call setSig().
// Layout() is static and called in setSig().
//---------------------------------------------------------
TimeSig::TimeSig(Score* s)
: Element(s)
{
setFlags(ELEMENT_SELECTABLE | ELEMENT_ON_STAFF);
_showCourtesySig = true;
customText = false;
_stretch.set(1, 1);
_sig.set(0, 1); // initialize to invalid
_subtype = TSIG_NORMAL;
customText = false;
needLayout = true;
}
//---------------------------------------------------------
// setSig
//---------------------------------------------------------
void TimeSig::setSig(const Fraction& f, TimeSigType st)
{
if (_sig != f) {
// customText = false;
_sig = f;
}
if (st == TSIG_FOUR_FOUR || st == TSIG_ALLA_BREVE)
customText = false;
_subtype = st;
layout1();
}
//---------------------------------------------------------
// acceptDrop
//---------------------------------------------------------
bool TimeSig::acceptDrop(MuseScoreView*, const QPointF&, Element* e) const
{
return e->type() == TIMESIG;
}
//---------------------------------------------------------
// drop
//---------------------------------------------------------
Element* TimeSig::drop(const DropData& data)
{
Element* e = data.element;
if (e->type() == TIMESIG) {
// change timesig applies to all staves, can't simply set subtype
// for this one only
// ownership of e is transferred to cmdAddTimeSig
score()->cmdAddTimeSig(measure(), staffIdx(), static_cast<TimeSig*>(e), false);
return 0;
}
delete e;
return 0;
}
//---------------------------------------------------------
// setNumeratorString
//---------------------------------------------------------
void TimeSig::setNumeratorString(const QString& a)
{
_numeratorString = a;
// text is custom if only one string is present or if either string is not the default string
customText = _numeratorString.isEmpty() != _denominatorString.isEmpty()
|| ( !_numeratorString.isEmpty() && _numeratorString != QString::number(_sig.numerator()) )
|| ( !_denominatorString.isEmpty() && _denominatorString != QString::number(_sig.denominator()) );
}
//---------------------------------------------------------
// setDenominatorString
//---------------------------------------------------------
void TimeSig::setDenominatorString(const QString& a)
{
_denominatorString = a;
// text is custom if only one string is present or if either string is not the default string
customText = _numeratorString.isEmpty() != _denominatorString.isEmpty()
|| ( !_numeratorString.isEmpty() && _numeratorString != QString::number(_sig.numerator()) )
|| ( !_denominatorString.isEmpty() && _denominatorString != QString::number(_sig.denominator()) );
}
//---------------------------------------------------------
// write TimeSig
//---------------------------------------------------------
void TimeSig::write(Xml& xml) const
{
xml.stag("TimeSig");
if (subtype() != TSIG_NORMAL)
xml.tag("subtype", subtype());
Element::writeProperties(xml);
xml.tag("sigN", _sig.numerator());
xml.tag("sigD", _sig.denominator());
if (stretch() != Fraction(1,1)) {
xml.tag("stretchN", stretch().numerator());
xml.tag("stretchD", stretch().denominator());
}
if (customText) {
xml.tag("textN", _numeratorString);
xml.tag("textD", _denominatorString);
}
xml.tag("showCourtesySig", _showCourtesySig);
xml.etag();
}
//---------------------------------------------------------
// TimeSig::read
//---------------------------------------------------------
void TimeSig::read(XmlReader& e)
{
int n=0, z1=0, z2=0, z3=0, z4=0;
bool old = false;
customText = false;
while (e.readNextStartElement()) {
const QStringRef& tag(e.name());
if (tag == "den") {
old = true;
n = e.readInt();
}
else if (tag == "nom1") {
old = true;
z1 = e.readInt();
}
else if (tag == "nom2") {
old = true;
z2 = e.readInt();
}
else if (tag == "nom3") {
old = true;
z3 = e.readInt();
}
else if (tag == "nom4") {
old = true;
z4 = e.readInt();
}
else if (tag == "subtype") {
TimeSigType i = TimeSigType(e.readInt());
if (score()->mscVersion() < 122) {
setSig(Fraction(
((i >> 24) & 0x3f)
+ ((i >> 18) & 0x3f)
+ ((i >> 12) & 0x3f)
+ ((i >> 6) & 0x3f), i & 0x3f), TSIG_NORMAL);
}
else
_subtype = i;
}
else if (tag == "showCourtesySig")
_showCourtesySig = e.readInt();
else if (tag == "sigN")
_sig.setNumerator(e.readInt());
else if (tag == "sigD")
_sig.setDenominator(e.readInt());
else if (tag == "stretchN")
_stretch.setNumerator(e.readInt());
else if (tag == "stretchD")
_stretch.setDenominator(e.readInt());
else if (tag == "textN")
setNumeratorString(e.readElementText());
else if (tag == "textD")
setDenominatorString(e.readElementText());
else if (!Element::readProperties(e))
e.unknown();
}
if (old) {
_sig.set(z1+z2+z3+z4, n);
customText = false;
if (subtype() == 0x40000104)
_subtype = TSIG_FOUR_FOUR;
else if (subtype() == 0x40002084)
_subtype = TSIG_ALLA_BREVE;
else
_subtype = TSIG_NORMAL;
}
needLayout = true;
}
//---------------------------------------------------------
// layout1
//---------------------------------------------------------
void TimeSig::layout1()
{
qreal _spatium = spatium();
setbbox(QRectF()); // prepare for an empty time signature
pz = QPointF();
pn = QPointF();
qreal lineDist = 1.0; // assume dimensions a standard staff
int numOfLines = 5;
TimeSigType st = subtype();
if (staff()) {
StaffType* staffType = staff()->staffType();
numOfLines = staff()->staffType()->lines();
lineDist = staff()->staffType()->lineDistance().val();
// if tablature, but without time sig, set empty symbol
if ((staffType->group() == TAB_STAFF) &&
!(static_cast<StaffTypeTablature*>(staffType)->genTimesig())) {
st = TSIG_NORMAL;
}
}
// if some symbol
// compute vert. displacement to center in the staff height
// determine middle staff position:
qreal yoff = _spatium * (numOfLines-1) *.5 * lineDist;
qreal mag = magS();
// C and Ccut are placed at the middle of the staff: use yoff directly
if (st == TSIG_FOUR_FOUR) {
pz = QPointF(0.0, yoff);
Sym& sym = symbols[score()->symIdx()][fourfourmeterSym];
setbbox(sym.bbox(mag).translated(pz));
_numeratorString = sym.toString();
_denominatorString.clear();
}
else if (st == TSIG_ALLA_BREVE) {
pz = QPointF(0.0, yoff);
Sym& sym = symbols[score()->symIdx()][allabreveSym];
setbbox(sym.bbox(mag).translated(pz));
_numeratorString = sym.toString();
_denominatorString.clear();
}
else {
if (!customText) {
_numeratorString = QString("%1").arg(_sig.numerator()); // build numerator string
_denominatorString = QString("%1").arg(_sig.denominator()); // build denominator string
}
QFontMetricsF fm(fontId2font(symIdx2fontId(score()->symIdx())));
QRectF rz = fm.tightBoundingRect(_numeratorString); // get 'tight' bounding boxes for strings
QRectF rn = fm.tightBoundingRect(_denominatorString);
// scale bounding boxes to mag
qreal spatium2 = _spatium * 2.0;
rz = QRectF(rz.x() * mag, -spatium2, rz.width() * mag, spatium2);
rn = QRectF(rn.x() * mag, -spatium2, rn.width() * mag, spatium2);
// position numerator and denominator; vertical displacement:
// number of lines is odd: 0.0 (strings are directly above and below the middle line)
// number of lines even: 0.5 (strings are moved up/down to leave 1 line dist. between them)
qreal displ = (numOfLines & 1) ? 0.0 : (0.5 * lineDist * _spatium);
pz = QPointF(0.0, yoff - displ);
// denom. horiz. posit.: centred around centre of numerator
// vert. position: base line is lowered by displ and by the whole height of a digit
pn = QPointF((rz.width() - rn.width())*.5, yoff + displ + spatium2);
setbbox(rz.translated(pz)); // translate bounding boxes to actual string positions
addbbox(rn.translated(pn));
}
qreal im = (MScore::DPI * SPATIUM20) / _spatium;
pz *= im; // convert positions to raster units
pn *= im;
needLayout = false;
// adjustReadPos();
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void TimeSig::draw(QPainter* painter) const
{
if (staff() && !staff()->staffType()->genTimesig())
return;
painter->setPen(curColor());
QFont font = fontId2font(symIdx2fontId(score()->symIdx()));
font.setPixelSize(lrint(20.0 * MScore::DPI/PPI));
painter->setFont(font);
qreal mag = spatium() / (MScore::DPI * SPATIUM20);
qreal imag = 1.0 / mag;
painter->scale(mag, mag);
painter->drawText(pz, _numeratorString); // use positions and strings computed in layout()
painter->drawText(pn, _denominatorString);
painter->scale(imag, imag);
}
//---------------------------------------------------------
// space
//---------------------------------------------------------
Space TimeSig::space() const
{
return Space(point(score()->styleS(ST_timesigLeftMargin)), width());
}
//---------------------------------------------------------
// setFrom
//---------------------------------------------------------
void TimeSig::setFrom(const TimeSig* ts)
{
_subtype = ts->subtype();
_numeratorString = ts->_numeratorString;
_denominatorString = ts->_denominatorString;
_sig = ts->_sig;
_stretch = ts->_stretch;
customText = ts->customText;
layout1();
}
//---------------------------------------------------------
// ssig
//---------------------------------------------------------
QString TimeSig::ssig() const
{
return QString("%1/%2").arg(_sig.numerator()).arg(_sig.denominator());
}
//---------------------------------------------------------
// setSSig
//---------------------------------------------------------
void TimeSig::setSSig(const QString& s)
{
QStringList sl = s.split("/");
if (sl.size() == 2) {
_sig.setNumerator(sl[0].toInt());
_sig.setDenominator(sl[1].toInt());
}
}
//---------------------------------------------------------
// undoSetShowCourtesySig
//---------------------------------------------------------
void TimeSig::undoSetShowCourtesySig(bool v)
{
score()->undoChangeProperty(this, P_SHOW_COURTESY, v);
}
//---------------------------------------------------------
// undoSetNumeratorString
//---------------------------------------------------------
void TimeSig::undoSetNumeratorString(const QString& s)
{
score()->undoChangeProperty(this, P_NUMERATOR_STRING, s);
}
//---------------------------------------------------------
// undoSetDenominatorString
//---------------------------------------------------------
void TimeSig::undoSetDenominatorString(const QString& s)
{
score()->undoChangeProperty(this, P_DENOMINATOR_STRING, s);
}
//---------------------------------------------------------
// getProperty
//---------------------------------------------------------
QVariant TimeSig::getProperty(P_ID propertyId) const
{
switch(propertyId) {
case P_SHOW_COURTESY: return int(showCourtesySig());
case P_NUMERATOR_STRING: return numeratorString();
case P_DENOMINATOR_STRING: return denominatorString();
default:
return Element::getProperty(propertyId);
}
}
//---------------------------------------------------------
// setProperty
//---------------------------------------------------------
bool TimeSig::setProperty(P_ID propertyId, const QVariant& v)
{
switch(propertyId) {
case P_SHOW_COURTESY:
setShowCourtesySig(v.toBool());
break;
case P_NUMERATOR_STRING:
setNumeratorString(v.toString());
break;
case P_DENOMINATOR_STRING:
setDenominatorString(v.toString());
break;
default:
if (!Element::setProperty(propertyId, v))
return false;
break;
}
score()->setLayoutAll(true);
setGenerated(false);
return true;
}
//---------------------------------------------------------
// propertyDefault
//---------------------------------------------------------
QVariant TimeSig::propertyDefault(P_ID id) const
{
switch(id) {
case P_SHOW_COURTESY: return true;
case P_NUMERATOR_STRING: return QString();
case P_DENOMINATOR_STRING: return QString();
default: return Element::propertyDefault(id);
}
}
//---------------------------------------------------------
// spatiumChanged
//---------------------------------------------------------
void TimeSig::spatiumChanged(qreal /*oldValue*/, qreal /*newValue*/)
{
needLayout = true;
}
//---------------------------------------------------------
// layout
//---------------------------------------------------------
void TimeSig::layout()
{
if (needLayout)
layout1();
}
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