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MuseScore/libmscore/fret.cpp
Werner Schweer 1f9ccfcdce add libmscore 
git-subtree-dir: libmscore
git-subtree-mainline: 412ca45401
git-subtree-split: 6047361bd0
2012-05-26 14:54:47 +02:00

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//=============================================================================
// MuseScore
// Music Composition & Notation
// $Id: fret.cpp 5568 2012-04-22 10:08:43Z wschweer $
//
// Copyright (C) 2010-2011 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#include "fret.h"
#include "measure.h"
#include "system.h"
#include "score.h"
#include "tablature.h"
#include "chord.h"
#include "note.h"
#include "segment.h"
#include "mscore.h"
#include "harmony.h"
static const int DEFAULT_STRINGS = 6;
static const int DEFAULT_FRETS = 5;
//---------------------------------------------------------
// FretDiagram
//---------------------------------------------------------
FretDiagram::FretDiagram(Score* score)
: Element(score)
{
setFlags(ELEMENT_MOVABLE | ELEMENT_SELECTABLE);
_strings = DEFAULT_STRINGS;
_frets = DEFAULT_FRETS;
_maxFrets = 24;
maxStrings = 0;
_dots = 0;
_marker = 0;
_fingering = 0;
_fretOffset = 0;
font.setFamily("FreeSans");
int size = lrint(4.0 * MScore::DPI * mag()/ PPI);
font.setPixelSize(size);
_harmony = 0;
}
FretDiagram::FretDiagram(const FretDiagram& f)
: Element(f)
{
_strings = f._strings;
_frets = f._frets;
_fretOffset = f._fretOffset;
_maxFrets = f._maxFrets;
_dots = 0;
_marker = 0;
_fingering = 0;
font = f.font;
if (f._dots) {
_dots = new char[_strings];
memcpy(_dots, f._dots, _strings);
}
if (f._marker) {
_marker = new char[_strings];
memcpy(_marker, f._marker, _strings);
}
if (f._fingering) {
_fingering = new char[_strings];
memcpy(_fingering, f._fingering, _strings);
}
if (f._harmony)
_harmony = new Harmony(*f._harmony);
else
_harmony = 0;
}
//---------------------------------------------------------
// FretDiagram
//---------------------------------------------------------
FretDiagram::~FretDiagram()
{
delete _dots;
delete _marker;
delete _fingering;
}
//---------------------------------------------------------
// pagePos
//---------------------------------------------------------
QPointF FretDiagram::pagePos() const
{
if (parent() == 0)
return pos();
System* system = measure()->system();
qreal yp = y();
if (system)
yp += system->staffY(staffIdx());
return QPointF(pageX(), yp);
}
//---------------------------------------------------------
// dragAnchor
//---------------------------------------------------------
QLineF FretDiagram::dragAnchor() const
{
Measure* m = measure();
System* system = m->system();
qreal yp = system->staff(staffIdx())->y() + system->y();
qreal xp = m->tick2pos(segment()->tick()) + m->pagePos().x();
QPointF p1(xp, yp);
qreal x = 0.0;
qreal y = 0.0;
#if 0 // TODOxx
qreal tw = width();
qreal th = height();
if (_align & ALIGN_BOTTOM)
y = th;
else if (_align & ALIGN_VCENTER)
y = (th * .5);
else if (_align & ALIGN_BASELINE)
y = baseLine();
if (_align & ALIGN_RIGHT)
x = tw;
else if (_align & ALIGN_HCENTER)
x = (tw * .5);
#endif
return QLineF(p1, abbox().topLeft() + QPointF(x, y));
}
//---------------------------------------------------------
// setStrings
//---------------------------------------------------------
void FretDiagram::setStrings(int n)
{
if (n <= maxStrings) {
_strings = n;
return;
}
maxStrings = n;
if (_dots) {
char* ndots = new char[n];
memcpy(ndots, _dots, _strings);
for (int i = _strings; i < n; ++i)
ndots[i] = 0;
delete _dots;
_dots = ndots;
}
if (_marker) {
char* nmarker = new char[n];
memcpy(nmarker, _marker, _strings);
for (int i = _strings; i < n; ++i)
nmarker[i] = 0;
delete _marker;
_marker = nmarker;
}
if (_fingering) {
char* nfingering = new char[n];
memcpy(nfingering, _fingering, _strings);
for (int i = _strings; i < n; ++i)
nfingering[i] = 0;
delete _fingering;
_fingering = nfingering;
}
_strings = n;
}
//---------------------------------------------------------
// init
//---------------------------------------------------------
void FretDiagram::init(Tablature* tab, Chord* chord)
{
if (tab == 0)
setStrings(6);
else
setStrings(tab->strings());
if (tab) {
for (int string = 0; string < _strings; ++string)
_marker[string] = 'X';
foreach(const Note* note, chord->notes()) {
int string;
int fret;
if (tab->convertPitch(note->ppitch(), &string, &fret))
setDot(string, fret);
}
_maxFrets = tab->frets();
}
else
_maxFrets = 6;
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void FretDiagram::draw(QPainter* painter) const
{
qreal _spatium = spatium();
QPen pen(curColor());
pen.setWidthF(lw2);
pen.setCapStyle(Qt::FlatCap);
painter->setPen(pen);
painter->setBrush(QBrush(QColor(painter->pen().color())));
qreal x2 = (_strings-1) * stringDist;
painter->drawLine(QLineF(-lw1*.5, 0.0, x2+lw1*.5, 0.0));
pen.setWidthF(lw1);
painter->setPen(pen);
qreal y2 = (_frets+1) * fretDist - fretDist*.5;
for (int i = 0; i < _strings; ++i) {
qreal x = stringDist * i;
painter->drawLine(QLineF(x, _fretOffset ? -_spatium*.2 : 0.0, x, y2));
}
for (int i = 1; i <= _frets; ++i) {
qreal y = fretDist * i;
painter->drawLine(QLineF(0.0, y, x2, y));
}
painter->setFont(font);
QFontMetricsF fm(font);
for (int i = 0; i < _strings; ++i) {
if (_dots && _dots[i]) {
qreal dotd = stringDist * .6;
int fret = _dots[i] - 1;
qreal x = stringDist * i - dotd * .5;
qreal y = fretDist * fret + fretDist * .5 - dotd * .5;
painter->drawEllipse(QRectF(x, y, dotd, dotd));
}
if (_marker && _marker[i]) {
qreal x = stringDist * i;
qreal y = -fretDist * .3 - fm.ascent();
painter->drawText(QRectF(x, y, .0,.0),
Qt::AlignHCenter|Qt::TextDontClip, QChar(_marker[i]));
}
}
if (_fretOffset > 0) {
painter->drawText(QRectF(-stringDist, fretDist*.5, .0, .0),
Qt::AlignVCenter | Qt::TextDontClip,
QString("%1").arg(_fretOffset+1));
}
}
//---------------------------------------------------------
// layout
//---------------------------------------------------------
void FretDiagram::layout()
{
qreal _spatium = spatium();
lw1 = _spatium * 0.08;
lw2 = _fretOffset ? lw1 : _spatium * 0.2;
stringDist = _spatium * .7;
fretDist = _spatium * .8;
qreal w = stringDist * (_strings-1);
qreal h = _frets * fretDist + fretDist * .5;
qreal y = 0.0;
qreal dotd = stringDist * .6;
qreal x = -((dotd+lw1) * .5);
w += dotd + lw1;
if (_marker) {
QFontMetricsF fm(font);
y = -(fretDist * .1 + fm.height());
h -= y;
}
setbbox(QRectF(x, y, w, h));
// Element::layout(); // alignment & offset
// setPos(ipos() + QPointF(-w * .5, - (h + _spatium * 1.5)));
setPos(0.0, 0.0);
adjustReadPos();
if (_harmony)
_harmony->layout();
}
//---------------------------------------------------------
// write
//---------------------------------------------------------
void FretDiagram::write(Xml& xml) const
{
xml.stag("FretDiagram");
Element::writeProperties(xml);
if (_strings != DEFAULT_STRINGS)
xml.tag("strings", _strings);
if (_frets != DEFAULT_FRETS)
xml.tag("frets", _frets);
if (_fretOffset)
xml.tag("fretOffset", _fretOffset);
for (int i = 0; i < _strings; ++i) {
if ((_dots && _dots[i]) || (_marker && _marker[i]) || (_fingering && _fingering[i])) {
xml.stag(QString("string no=\"%1\"").arg(i));
if (_dots && _dots[i])
xml.tag("dot", _dots[i]);
if (_marker && _marker[i])
xml.tag("marker", _marker[i]);
if (_fingering && _fingering[i])
xml.tag("fingering", _fingering[i]);
xml.etag();
}
}
if (_harmony)
_harmony->write(xml);
xml.etag();
}
//---------------------------------------------------------
// read
//---------------------------------------------------------
void FretDiagram::read(const QDomElement& de)
{
delete _dots;
delete _marker;
delete _fingering;
_dots = 0;
_marker = 0;
_fingering = 0;
_fretOffset = 0;
for (QDomElement e = de.firstChildElement(); !e.isNull(); e = e.nextSiblingElement()) {
const QString& tag(e.tagName());
int val = e.text().toInt();
if (tag == "strings")
_strings = val;
else if (tag == "frets")
_frets = val;
else if (tag == "fretOffset")
_fretOffset = val;
else if (tag == "string") {
int no = e.attribute("no").toInt();
for (QDomElement ee = e.firstChildElement(); !ee.isNull(); ee = ee.nextSiblingElement()) {
const QString& tag(ee.tagName());
int val = ee.text().toInt();
if (tag == "dot")
setDot(no, val);
else if (tag == "marker")
setMarker(no, val);
else if (tag == "fingering")
setFingering(no, val);
else
domError(ee);
}
}
else if (tag == "Harmony") {
Harmony* h = new Harmony(score());
h->read(e);
add(h);
}
else if (!Element::readProperties(e))
domError(e);
}
}
//---------------------------------------------------------
// setDot
//---------------------------------------------------------
void FretDiagram::setDot(int string, int fret)
{
if (_dots == 0) {
_dots = new char[_strings];
memset(_dots, 0, _strings);
}
if (0 <= string && string < _strings) {
_dots[string] = fret;
setMarker(string, 0);
}
}
//---------------------------------------------------------
// setMarker
//---------------------------------------------------------
void FretDiagram::setMarker(int string, int marker)
{
if (_marker == 0) {
_marker = new char[_strings];
memset(_marker, 0, _strings);
}
if (0 <= string && string < _strings)
_marker[string] = marker;
}
//---------------------------------------------------------
// setFingering
//---------------------------------------------------------
void FretDiagram::setFingering(int string, int finger)
{
if (_fingering == 0) {
_fingering = new char[_strings];
memset(_fingering, 0, _strings);
}
_fingering[string] = finger;
}
//---------------------------------------------------------
// add
//---------------------------------------------------------
void FretDiagram::add(Element* e)
{
e->setParent(this);
if (e->type() == HARMONY) {
_harmony = static_cast<Harmony*>(e);
}
else
qWarning("FretDiagram: cannot add <%s>\n", e->name());
}
//---------------------------------------------------------
// remove
//---------------------------------------------------------
void FretDiagram::remove(Element* e)
{
if (e == _harmony)
_harmony = 0;
else
qWarning("FretDiagram: cannot remove <%s>\n", e->name());
}
//---------------------------------------------------------
// acceptDrop
//---------------------------------------------------------
bool FretDiagram::acceptDrop(MuseScoreView*, const QPointF&, Element* e) const
{
return e->type() == HARMONY;
}
//---------------------------------------------------------
// drop
//---------------------------------------------------------
Element* FretDiagram::drop(const DropData& data)
{
Element* e = data.element;
if (e->type() == HARMONY) {
// TODO: make undoable
_harmony = static_cast<Harmony*>(e);
score()->setUpdateAll(true);
}
else {
delete e;
e = 0;
}
qWarning("FretDiagram: cannot drop <%s>\n", e->name());
return e;
}
//---------------------------------------------------------
// scanElements
//---------------------------------------------------------
void FretDiagram::scanElements(void* data, void (*func)(void*, Element*), bool all)
{
Q_UNUSED(all);
func(data, this);
if (_harmony)
func(data, _harmony);
}
//---------------------------------------------------------
// Read MusicXML
//
// Set the FretDiagram state based on the MusicXML <figure> node de.
//---------------------------------------------------------
void FretDiagram::readMusicXML(const QDomElement& de)
{
qDebug("FretDiagram::readMusicXML");
// TODO: is this required ?
delete _dots;
delete _marker;
delete _fingering;
_dots = 0;
_marker = 0;
_fingering = 0;
_fretOffset = 0;
// end TODO: is this required ?
for (QDomElement e = de.firstChildElement(); !e.isNull(); e = e.nextSiblingElement()) {
const QString& tag(e.tagName());
int val = e.text().toInt();
if (tag == "frame-frets") {
if (val > 0)
setFrets(val);
else
qDebug("FretDiagram::readMusicXML: illegal frame-fret %d", val);
}
else if (tag == "frame-note") {
int fret = -1;
int string = -1;
for (QDomElement ee = e.firstChildElement(); !ee.isNull(); ee = ee.nextSiblingElement()) {
const QString& tag(ee.tagName());
int val = ee.text().toInt();
if (tag == "fret")
fret = val;
else if (tag == "string")
string = val;
else
domError(ee);
}
qDebug("FretDiagram::readMusicXML string %d fret %d", string, fret);
if (string > 0) {
if (fret == 0)
setMarker(strings() - string, 79 /* ??? */);
else if (fret > 0)
setDot(strings() - string, fret);
}
}
else if (tag == "frame-strings") {
if (val > 0) {
setStrings(val);
for (int i = 0; i < val; ++i)
setMarker(i, 88 /* ??? */);
}
else
qDebug("FretDiagram::readMusicXML: illegal frame-strings %d", val);
}
else
domError(e);
}
}
//---------------------------------------------------------
// Write MusicXML
//---------------------------------------------------------
void FretDiagram::writeMusicXML(Xml& /*xml*/) const
{
}
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