1f9ccfcdce
git-subtree-dir: libmscore git-subtree-mainline:412ca45401git-subtree-split:6047361bd0
118 lines
3.9 KiB
C++
118 lines
3.9 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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// $Id: tempotext.cpp 5427 2012-03-07 12:41:34Z wschweer $
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//
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// Copyright (C) 2008-2011 Werner Schweer
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2
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// as published by the Free Software Foundation and appearing in
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// the file LICENCE.GPL
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//=============================================================================
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#include "score.h"
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#include "tempotext.h"
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#include "tempo.h"
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#include "system.h"
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#include "measure.h"
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//---------------------------------------------------------
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// TempoText
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//---------------------------------------------------------
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TempoText::TempoText(Score* s)
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: Text(s)
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{
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_tempo = 2.0;
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_followText = false;
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setTextStyle(s->textStyle(TEXT_STYLE_TEMPO));
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}
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//---------------------------------------------------------
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// write
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//---------------------------------------------------------
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void TempoText::write(Xml& xml) const
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{
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xml.stag("Tempo");
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xml.tag("tempo", _tempo);
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if (_followText)
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xml.tag("followText", _followText);
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Text::writeProperties(xml);
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xml.etag();
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}
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//---------------------------------------------------------
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// read
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//---------------------------------------------------------
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void TempoText::read(const QDomElement& de)
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{
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for (QDomElement e = de.firstChildElement(); !e.isNull(); e = e.nextSiblingElement()) {
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const QString& tag(e.tagName());
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if (tag == "tempo")
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_tempo = e.text().toDouble();
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else if (tag == "followText")
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_followText = e.text().toInt();
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else if (!Text::readProperties(e))
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domError(e);
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}
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if (score()->mscVersion() < 119) {
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//
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// Reset text in old version to
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// style.
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//
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//TODO if (textStyle() != TEXT_STYLE_INVALID) {
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// setStyled(true);
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// styleChanged();
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// }
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}
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}
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//---------------------------------------------------------
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// TempoPattern
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//---------------------------------------------------------
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struct TempoPattern {
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const char* pattern;
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qreal f;
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TempoPattern(const char* s, qreal v) : pattern(s), f(v) {}
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};
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//---------------------------------------------------------
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// textChanged
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// text may have changed
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//---------------------------------------------------------
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void TempoText::textChanged()
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{
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if (!_followText)
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return;
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QString s = getText();
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static const TempoPattern tp[] = {
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TempoPattern("\\xd834\\xdd5f = (\\d+)", 1.0/60.0), // 1/4
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TempoPattern("\\xd834\\xdd5e = (\\d+)", 1.0/30.0), // 1/2
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TempoPattern("\\xd834\\xdd60 = (\\d+)", 1.0/120.0), // 1/8
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TempoPattern("\\xd834\\xdd5f\\xd834\\xdd6d = (\\d+)", 1.5/60.0), // dotted 1/4
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TempoPattern("\\xd834\\xdd5e\\xd834\\xdd6d = (\\d+)", 1.5/30.0), // dotted 1/2
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TempoPattern("\\xd834\\xdd60\\xd834\\xdd6d = (\\d+)", 1.5/120.0), // dotted 1/8
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};
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for (unsigned i = 0; i < sizeof(tp)/sizeof(*tp); ++i) {
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QRegExp re(tp[i].pattern); // 1/4
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if (re.indexIn(s) != -1) {
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QStringList sl = re.capturedTexts();
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if (sl.size() == 2) {
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qreal nt = qreal(sl[1].toInt()) * tp[i].f;
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if (nt != _tempo) {
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_tempo = qreal(sl[1].toInt()) * tp[i].f;
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score()->setPlaylistDirty(true);
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}
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break;
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}
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}
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}
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}
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