78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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//
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// Copyright (C) 2002-2011 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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#ifndef __TEMPOTEXT_H__
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#define __TEMPOTEXT_H__
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#include "durationtype.h"
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#include "text.h"
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namespace Ms {
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//-------------------------------------------------------------------
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// @@ TempoText
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/// Tempo marker which determines the midi tempo.
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//
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// @P tempo float tempo in quarter notes (crochets) per second
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// @P followText bool determine tempo from text
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//-------------------------------------------------------------------
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class TempoText final : public TextBase {
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qreal _tempo; // beats per second
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bool _followText; // parse text to determine tempo
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qreal _relative;
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bool _isRelative;
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void updateScore();
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void updateTempo();
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void endEdit(EditData&) override;
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void undoChangeProperty(Pid id, const QVariant&, PropertyFlags ps) override;
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public:
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TempoText(Score*);
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TempoText* clone() const override { return new TempoText(*this); }
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ElementType type() const override { return ElementType::TEMPO_TEXT; }
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void write(XmlWriter& xml) const override;
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void read(XmlReader&) override;
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Segment* segment() const { return toSegment(parent()); }
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Measure* measure() const { return toMeasure(parent()->parent()); }
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qreal tempo() const { return _tempo; }
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void setTempo(qreal v);
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void undoSetTempo(qreal v);
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bool isRelative() { return _isRelative; }
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void setRelative(qreal v) { _isRelative = true; _relative = v; }
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bool followText() const { return _followText; }
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void setFollowText(bool v) { _followText = v; }
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void undoSetFollowText(bool v);
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void updateRelative();
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void layout() override;
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static int findTempoDuration(const QString& s, int& len, TDuration& dur);
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static QString duration2tempoTextString(const TDuration dur);
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static QString duration2userName(const TDuration t);
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QVariant getProperty(Pid propertyId) const override;
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bool setProperty(Pid propertyId, const QVariant&) override;
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QVariant propertyDefault(Pid id) const override;
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Sid getPropertyStyle(Pid) const override;
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QString accessibleInfo() const override;
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};
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} // namespace Ms
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#endif
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