146 lines
4.3 KiB
C++
146 lines
4.3 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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//
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// Copyright (C) 2016 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 "stafflines.h"
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#include "system.h"
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#include "measure.h"
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#include "score.h"
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#include "stafftype.h"
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#include "staff.h"
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// Anatomy of StaffLines:
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//
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// step - The possible vertical positions of a note are counted as steps.
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// The top staff line is step position zero.
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// lines - number of visible staff lines
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// lineDistance - The distance between lines, measured in step units. A standard five line
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// staff has a line distance of two steps.
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// stepDistance - The distance between steps measured in scaled spatium/2 units. A standard five
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// line staff has a step distance of 0.5 which results in a line distance of
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// one spatium. The spatium unit is scaled by staff size.
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// yoffset - vertical offset to align with other staves of different height
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// stepOffset - This value changes the staff line step numbering.
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//
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namespace Ms {
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//---------------------------------------------------------
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// StaffLines
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//---------------------------------------------------------
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StaffLines::StaffLines(Score* s)
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: Element(s)
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{
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setSelectable(false);
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}
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//---------------------------------------------------------
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// pagePos
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//---------------------------------------------------------
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QPointF StaffLines::pagePos() const
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{
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System* system = measure()->system();
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return QPointF(measure()->x() + system->x(), system->staff(staffIdx())->y() + system->y());
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}
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//---------------------------------------------------------
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// canvasPos
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//---------------------------------------------------------
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QPointF StaffLines::canvasPos() const
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{
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QPointF p(pagePos());
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Element* e = parent();
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while (e) {
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if (e->type() == ElementType::PAGE) {
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p += e->pos();
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break;
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}
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e = e->parent();
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}
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return p;
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}
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//---------------------------------------------------------
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// layout
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//---------------------------------------------------------
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void StaffLines::layout()
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{
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layoutForWidth(measure()->width());
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}
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//---------------------------------------------------------
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// layoutForWidth
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//---------------------------------------------------------
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void StaffLines::layoutForWidth(qreal w)
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{
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const Staff* s = staff();
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qreal _spatium = spatium();
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qreal dist = _spatium;
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setPos(QPointF(0.0, 0.0));
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int _lines;
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if (s) {
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setMag(s->mag(measure()->tick()));
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setColor(s->color());
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const StaffType* st = s->staffType(measure()->tick());
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dist *= st->lineDistance().val();
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_lines = st->lines();
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rypos() = st->yoffset().val() * _spatium;
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// if (_lines == 1)
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// rypos() = 2 * _spatium;
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} else {
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_lines = 5;
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setColor(MScore::defaultColor);
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}
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lw = score()->styleS(Sid::staffLineWidth).val() * _spatium;
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qreal x1 = pos().x();
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qreal x2 = x1 + w;
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qreal y = pos().y();
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bbox().setRect(x1, -lw * .5 + y, w, (_lines - 1) * dist + lw);
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if (_lines == 1) {
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qreal extraSize = _spatium;
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bbox().adjust(0, -extraSize, 0, extraSize);
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}
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lines.clear();
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for (int i = 0; i < _lines; ++i) {
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lines.push_back(QLineF(x1, y, x2, y));
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y += dist;
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}
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}
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//---------------------------------------------------------
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// draw
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//---------------------------------------------------------
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void StaffLines::draw(QPainter* painter) const
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{
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painter->setPen(QPen(curColor(), lw, Qt::SolidLine, Qt::FlatCap));
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painter->drawLines(lines);
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}
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//---------------------------------------------------------
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// y1
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//---------------------------------------------------------
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qreal StaffLines::y1() const
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{
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System* system = measure()->system();
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/* if (system == 0 || staffIdx() >= system->staves()->size())
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return 0.0;
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*/
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return system->staff(staffIdx())->y() + ipos().y();
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}
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}
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