130 lines
4.3 KiB
C++
130 lines
4.3 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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// $Id: beam.h 5563 2012-04-20 13:30:27Z wschweer $
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//
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// Copyright (C) 2002-2012 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 __BEAM_H__
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#define __BEAM_H__
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#include "element.h"
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#include "durationtype.h"
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#include "spanner.h"
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class ChordRest;
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class MuseScoreView;
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class Chord;
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class QPainter;
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struct BeamFragment;
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//---------------------------------------------------------
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// @@ Beam
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//---------------------------------------------------------
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class Beam : public Element {
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Q_OBJECT
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QList<ChordRest*> _elements; // must be sorted by tick
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QList<QLineF*> beamSegments;
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MScore::Direction _direction;
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bool _up;
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bool _distribute; // equal spacing of elements
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qreal _grow1; // define "feather" beams
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qreal _grow2;
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qreal _beamDist;
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QList<BeamFragment*> fragments; // beam splits across systems
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bool _userModified[2]; // 0: auto/down 1: up
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mutable int _id; // used in read()/write()
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int minMove; // set in layout1()
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int maxMove;
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bool isGrace;
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bool cross;
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TDuration maxDuration;
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qreal slope;
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int editFragment; // valid in edit mode
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void layout2(QList<ChordRest*>, SpannerSegmentType, int frag);
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bool twoBeamedNotes();
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void computeStemLen(const QList<ChordRest*>& crl, qreal& py1, int beamLevels);
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bool noSlope(const QList<ChordRest*>& crl);
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public:
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Beam(Score* s);
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Beam(const Beam&);
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~Beam();
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virtual Beam* clone() const { return new Beam(*this); }
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virtual ElementType type() const { return BEAM; }
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virtual QPointF pagePos() const; ///< position in page coordinates
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virtual bool isEditable() const { return true; }
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virtual void startEdit(MuseScoreView*, const QPointF&);
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virtual void editDrag(const EditData&);
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virtual void updateGrips(int*, QRectF*) const;
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virtual void write(Xml& xml) const;
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virtual void read(const QDomElement&);
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virtual void spatiumChanged(qreal /*oldValue*/, qreal /*newValue*/);
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virtual void reset();
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System* system() const { return (System*)parent(); }
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void layout1();
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void layout();
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const QList<ChordRest*>& elements() { return _elements; }
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void clear() { _elements.clear(); }
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bool isEmpty() const { return _elements.isEmpty(); }
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virtual void add(ChordRest* a);
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virtual void remove(ChordRest* a);
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void writeMusicXml(Xml& xml, ChordRest* cr) const;
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virtual void move(qreal, qreal);
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virtual void draw(QPainter*) const;
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bool up() const { return _up; }
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void setUp(bool v) { _up = v; }
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void setId(int i) const { _id = i; }
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int id() const { return _id; }
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void setBeamDirection(MScore::Direction d);
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MScore::Direction beamDirection() const { return _direction; }
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virtual QPainterPath shape() const;
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virtual bool contains(const QPointF& p) const;
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virtual bool acceptDrop(MuseScoreView*, const QPointF&, Element*) const;
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virtual Element* drop(const DropData&);
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qreal growLeft() const { return _grow1; }
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qreal growRight() const { return _grow2; }
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void setGrowLeft(qreal val) { _grow1 = val; }
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void setGrowRight(qreal val) { _grow2 = val; }
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bool distribute() const { return _distribute; }
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void setDistribute(bool val) { _distribute = val; }
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bool userModified() const;
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void setUserModified(bool val);
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QPointF beamPos() const;
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void setBeamPos(const QPointF& bp);
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QVariant getProperty(P_ID propertyId) const;
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bool setProperty(P_ID propertyId, const QVariant&);
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QVariant propertyDefault(P_ID id) const;
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};
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extern bool endBeam(const Fraction&, ChordRest* cr, ChordRest* prevCr);
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#endif
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