84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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//
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// Copyright (C) 2010-2011 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 __STEM_H__
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#define __STEM_H__
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#include "element.h"
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namespace Ms {
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class Chord;
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//---------------------------------------------------------
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// @@ Stem
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/// Graphic representation of a note stem.
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//---------------------------------------------------------
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class Stem final : public Element
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{
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QLineF line; // p1 is attached to notehead
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qreal _lineWidth;
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qreal _userLen;
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qreal _len { 0.0 }; // always positive
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public:
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Stem(Score* = 0);
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Stem& operator=(const Stem&) = delete;
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Stem* clone() const override { return new Stem(*this); }
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ElementType type() const override { return ElementType::STEM; }
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void draw(QPainter*) const override;
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bool isEditable() const override { return true; }
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void layout() override;
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void spatiumChanged(qreal /*oldValue*/, qreal /*newValue*/) override;
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Element* elementBase() const override;
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void startEdit(EditData&) override;
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void editDrag(EditData&) override;
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void write(XmlWriter& xml) const override;
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void read(XmlReader& e) override;
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bool readProperties(XmlReader&) override;
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void reset() override;
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bool acceptDrop(EditData&) const override;
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Element* drop(EditData&) override;
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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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int vStaffIdx() const override;
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Chord* chord() const { return toChord(parent()); }
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bool up() const;
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qreal userLen() const { return _userLen; }
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void setUserLen(qreal l) { _userLen = l; }
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qreal lineWidth() const { return _lineWidth; }
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qreal lineWidthMag() const { return _lineWidth * mag(); }
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void setLineWidth(qreal w) { _lineWidth = w; }
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void setLen(qreal l);
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qreal len() const { return _len; }
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QPointF hookPos() const;
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qreal stemLen() const;
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QPointF p2() const { return line.p2(); }
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EditBehavior normalModeEditBehavior() const override { return EditBehavior::Edit; }
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int gripsCount() const override { return 1; }
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Grip initialEditModeGrip() const override { return Grip::START; }
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Grip defaultGrip() const override { return Grip::START; }
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std::vector<QPointF> gripsPositions(const EditData&) const override;
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};
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} // namespace Ms
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#endif
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