267 lines
9.4 KiB
C++
267 lines
9.4 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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// $Id: chordline.cpp 5491 2012-03-22 20:19:22Z lvinken $
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//
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// Copyright (C) 2010-2012 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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#include "chordline.h"
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#include "xml.h"
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#include "chord.h"
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#include "measure.h"
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#include "system.h"
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#include "note.h"
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//---------------------------------------------------------
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// ChordLine
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//---------------------------------------------------------
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ChordLine::ChordLine(Score* s)
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: Element(s)
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{
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setFlags(ELEMENT_MOVABLE | ELEMENT_SELECTABLE);
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modified = false;
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_subtype = CHORDLINE_NOTYPE;
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}
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ChordLine::ChordLine(const ChordLine& cl)
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: Element(cl)
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{
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path = cl.path;
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modified = cl.modified;
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_subtype = cl._subtype;
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}
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//---------------------------------------------------------
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// setSubtype
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//---------------------------------------------------------
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void ChordLine::setSubtype(ChordLineType st)
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{
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qreal x2 = 0;
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qreal y2 = 0;
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switch(st) {
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case CHORDLINE_NOTYPE:
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break;
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case CHORDLINE_FALL:
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x2 = 2;
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y2 = 2;
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break;
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case CHORDLINE_PLOP:
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x2 = -2;
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y2 = -2;
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break;
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case CHORDLINE_SCOOP:
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x2 = -2;
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y2 = 2;
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break;
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default:
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case CHORDLINE_DOIT:
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x2 = 2;
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y2 = -2;
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break;
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}
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if (st) {
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path = QPainterPath();
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// chordlines to the right of the note
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if (st == CHORDLINE_FALL || st == CHORDLINE_DOIT)
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path.cubicTo(x2/2, 0.0, x2, y2/2, x2, y2);
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// chordlines to the left of the note
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if (st == CHORDLINE_PLOP || st == CHORDLINE_SCOOP)
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path.cubicTo(0.0, y2/2, x2/2, y2, x2, y2);
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}
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_subtype = st;
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}
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//---------------------------------------------------------
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// layout
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//---------------------------------------------------------
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void ChordLine::layout()
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{
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qreal _spatium = spatium();
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if (parent()) {
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Note* note = chord()->upNote();
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QPointF p(note->pos());
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// chordlines to the right of the note
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if (_subtype == CHORDLINE_FALL || _subtype == CHORDLINE_DOIT)
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setPos(p.x() + note->headWidth() + _spatium * .2, p.y());
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// chordlines to the left of the note
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if (_subtype == CHORDLINE_PLOP)
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setPos(p.x() + note->headWidth() * .25, p.y() - note->headHeight() * .75);
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if (_subtype == CHORDLINE_SCOOP)
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setPos(p.x() + note->headWidth() * .25, p.y() + note->headHeight() * .75);
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}
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else
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setPos(0.0, 0.0);
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QRectF r(path.boundingRect());
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bbox().setRect(r.x() * _spatium, r.y() * _spatium, r.width() * _spatium, r.height() * _spatium);
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}
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//---------------------------------------------------------
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// read
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//---------------------------------------------------------
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void ChordLine::read(XmlReader& e)
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{
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path = QPainterPath();
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while (e.readNextStartElement()) {
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const QStringRef& tag(e.name());
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if (tag == "Path") {
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path = QPainterPath();
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QPointF curveTo;
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QPointF p1;
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int state = 0;
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while (e.readNextStartElement()) {
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const QStringRef& tag(e.name());
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if (tag == "Element") {
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int type = e.intAttribute("type");
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qreal x = e.doubleAttribute("x");
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qreal y = e.doubleAttribute("y");
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switch(QPainterPath::ElementType(type)) {
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case QPainterPath::MoveToElement:
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path.moveTo(x, y);
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break;
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case QPainterPath::LineToElement:
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path.lineTo(x, y);
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break;
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case QPainterPath::CurveToElement:
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curveTo.rx() = x;
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curveTo.ry() = y;
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state = 1;
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break;
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case QPainterPath::CurveToDataElement:
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if (state == 1) {
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p1.rx() = x;
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p1.ry() = y;
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state = 2;
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}
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else if (state == 2) {
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path.cubicTo(curveTo, p1, QPointF(x, y));
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state = 0;
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}
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break;
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}
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}
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else
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e.unknown();
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}
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modified = true;
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setSubtype(ChordLineType(0));
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}
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else if (tag == "subtype")
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setSubtype(ChordLineType(e.readInt()));
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else if (!Element::readProperties(e))
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e.unknown();
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}
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}
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//---------------------------------------------------------
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// write
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//---------------------------------------------------------
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void ChordLine::write(Xml& xml) const
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{
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xml.stag(name());
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xml.tag("subtype", _subtype);
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Element::writeProperties(xml);
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if (modified) {
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int n = path.elementCount();
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xml.stag("Path");
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for (int i = 0; i < n; ++i) {
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const QPainterPath::Element& e = path.elementAt(i);
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xml.tagE(QString("Element type=\"%1\" x=\"%2\" y=\"%3\"")
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.arg(int(e.type)).arg(e.x).arg(e.y));
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}
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xml.etag();
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}
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xml.etag();
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}
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//---------------------------------------------------------
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// Symbol::draw
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//---------------------------------------------------------
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void ChordLine::draw(QPainter* painter) const
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{
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qreal _spatium = spatium();
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painter->scale(_spatium, _spatium);
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painter->setPen(QPen(curColor(), .15, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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painter->setBrush(Qt::NoBrush);
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painter->drawPath(path);
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painter->scale(1.0/_spatium, 1.0/_spatium);
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}
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//---------------------------------------------------------
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// editDrag
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//---------------------------------------------------------
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void ChordLine::editDrag(const EditData& ed)
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{
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int n = path.elementCount();
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QPainterPath p;
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qreal sp = spatium();
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qreal dx = ed.delta.x() / sp;
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qreal dy = ed.delta.y() / sp;
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for (int i = 0; i < n; ++i) {
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const QPainterPath::Element& e = path.elementAt(i);
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qreal x = e.x;
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qreal y = e.y;
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if (ed.curGrip == i) {
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x += dx;
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y += dy;
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}
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switch(e.type) {
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case QPainterPath::CurveToDataElement:
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break;
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case QPainterPath::MoveToElement:
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p.moveTo(x, y);
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break;
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case QPainterPath::LineToElement:
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p.lineTo(x, y);
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break;
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case QPainterPath::CurveToElement:
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{
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qreal x2 = path.elementAt(i+1).x;
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qreal y2 = path.elementAt(i+1).y;
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qreal x3 = path.elementAt(i+2).x;
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qreal y3 = path.elementAt(i+2).y;
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if (i + 1 == ed.curGrip) {
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x2 += dx;
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y2 += dy;
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}
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else if (i + 2 == ed.curGrip) {
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x3 += dx;
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y3 += dy;
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}
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p.cubicTo(x, y, x2, y2, x3, y3);
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i += 2;
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}
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break;
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}
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}
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path = p;
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modified = true;
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setSubtype(ChordLineType(0));
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}
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//---------------------------------------------------------
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// updateGrips
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//---------------------------------------------------------
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void ChordLine::updateGrips(int* grips, QRectF* grip) const
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{
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int n = path.elementCount();
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*grips = n;
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QPointF cp(pagePos());
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qreal sp = spatium();
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for (int i = 0; i < n; ++i)
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grip[i].translate(cp + QPointF(path.elementAt(i).x * sp, path.elementAt(i).y * sp));
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}
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