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MuseScore/libmscore/select.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: select.cpp 5582 2012-04-27 19:16:19Z wschweer $
//
// Copyright (C) 2002-2011 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
//=============================================================================
/**
\file
Implementation of class Selection plus other selection related functions.
*/
#include "mscore.h"
#include "note.h"
#include "chord.h"
#include "rest.h"
#include "score.h"
#include "slur.h"
#include "system.h"
#include "select.h"
#include "sig.h"
#include "utils.h"
#include "text.h"
#include "segment.h"
#include "input.h"
#include "measure.h"
#include "page.h"
#include "barline.h"
#include "xml.h"
#include "lyrics.h"
#include "limits.h"
#include "tuplet.h"
#include "beam.h"
#include "textline.h"
//---------------------------------------------------------
// Selection
//---------------------------------------------------------
Selection::Selection(Score* s)
{
_score = s;
_state = SEL_NONE;
_startSegment = 0;
_endSegment = 0;
_activeSegment = 0;
_staffStart = 0;
_staffEnd = 0;
_activeTrack = 0;
}
//---------------------------------------------------------
// tickStart
//---------------------------------------------------------
int Selection::tickStart() const
{
return _startSegment->tick();
}
//---------------------------------------------------------
// tickEnd
//---------------------------------------------------------
int Selection::tickEnd() const
{
if(_endSegment)
return _endSegment->tick();
else{ // endsegment == 0 if end of score
Measure* m = _score->lastMeasure();
return m->tick() + m->ticks();
}
}
//---------------------------------------------------------
// isStartActive
//---------------------------------------------------------
bool Selection::isStartActive() const
{
return activeSegment() && activeSegment()->tick() == tickStart();
}
//---------------------------------------------------------
// isEndActive
//---------------------------------------------------------
bool Selection::isEndActive() const {
return activeSegment() && activeSegment()->tick() == tickEnd();
}
//---------------------------------------------------------
// element
//---------------------------------------------------------
Element* Selection::element() const
{
return _el.size() == 1 ? _el[0] : 0;
}
//---------------------------------------------------------
// activeCR
//---------------------------------------------------------
ChordRest* Selection::activeCR() const
{
if ((_state != SEL_RANGE) || !_activeSegment)
return 0;
if (_activeSegment == _startSegment)
return firstChordRest(_activeTrack);
else
return lastChordRest(_activeTrack);
}
//---------------------------------------------------------
// firstChordRest
//---------------------------------------------------------
ChordRest* Selection::firstChordRest(int track) const
{
ChordRest* cr = 0;
foreach (Element* el, _el) {
if (el->type() == NOTE)
el = el->parent();
if (el->isChordRest()) {
if (track != -1 && el->track() != track)
continue;
if (cr) {
if (static_cast<ChordRest*>(el)->tick() < cr->tick())
cr = static_cast<ChordRest*>(el);
}
else
cr = static_cast<ChordRest*>(el);
}
}
return cr;
}
//---------------------------------------------------------
// lastChordRest
//---------------------------------------------------------
ChordRest* Selection::lastChordRest(int track) const
{
ChordRest* cr = 0;
for (ciElement i = _el.begin(); i != _el.end(); ++i) {
Element* el = *i;
if (el->type() == NOTE)
el = ((Note*)el)->chord();
if (el->isChordRest() && static_cast<ChordRest*>(el)->segment()->subtype() == SegChordRest) {
if (track != -1 && el->track() != track)
continue;
if (cr) {
if (((ChordRest*)el)->tick() >= cr->tick())
cr = (ChordRest*)el;
}
else
cr = (ChordRest*)el;
}
}
return cr;
}
//---------------------------------------------------------
// deselectAll
//---------------------------------------------------------
void Selection::deselectAll()
{
if (_state == SEL_RANGE)
_score->setUpdateAll();
clear();
updateState();
}
//---------------------------------------------------------
// clear
//---------------------------------------------------------
void Selection::clear()
{
foreach(Element* e, _el) {
_score->addRefresh(e->canvasBoundingRect());
e->setSelected(false);
_score->addRefresh(e->canvasBoundingRect());
}
_el.clear();
setState(SEL_NONE);
}
//---------------------------------------------------------
// remove
//---------------------------------------------------------
void Selection::remove(Element* el)
{
_el.removeOne(el);
el->setSelected(false);
updateState();
}
//---------------------------------------------------------
// add
//---------------------------------------------------------
void Selection::add(Element* el)
{
_el.append(el);
update();
}
//---------------------------------------------------------
// updateSelectedElements
//---------------------------------------------------------
void Selection::updateSelectedElements()
{
foreach(Element* e, _el)
e->setSelected(false);
_el.clear();
// assert:
int staves = _score->nstaves();
if (_staffStart < 0 || _staffStart >= staves || _staffEnd < 0 || _staffEnd > staves
|| _staffStart >= _staffEnd) {
qDebug("updateSelectedElements: bad staff selection %d - %d, staves %d\n", _staffStart, _staffEnd, staves);
_staffStart = 0;
_staffEnd = 0;
}
int startTrack = _staffStart * VOICES;
int endTrack = _staffEnd * VOICES;
for (int st = startTrack; st < endTrack; ++st) {
for (Segment* s = _startSegment; s && (s != _endSegment); s = s->next1()) {
if (s->subtype() == SegEndBarLine) // do not select end bar line
continue;
Element* e = s->element(st);
if (!e)
continue;
if (e->type() == CHORD) {
Chord* chord = static_cast<Chord*>(e);
foreach(Note* note, chord->notes()) {
add(note);
}
}
else {
add(e);
}
foreach(Element* e, s->annotations()) {
if (e->track() < startTrack || e->track() >= endTrack)
continue;
add(e);
}
foreach(Spanner* sp, s->spannerFor()) {
if (sp->track() < startTrack || sp->track() >= endTrack)
continue;
if (sp->endElement()->type() == SEGMENT) {
Segment* s2 = static_cast<Segment*>(sp->endElement());
if (s2->tick() < _endSegment->tick())
add(sp);
}
else {
qDebug("1spanner element type %s\n", sp->endElement()->name());
}
}
}
for (Measure* m = _score->firstMeasure(); m; m = m->nextMeasure()) {
foreach(Spanner* sp, m->spannerFor()) {
if (sp->track() < startTrack || sp->track() >= endTrack)
continue;
if (sp->endElement()->type() == SEGMENT) {
Segment* s2 = static_cast<Segment*>(sp->endElement());
if (s2->tick() < _endSegment->tick())
add(sp);
}
else if (sp->endElement()->type() == MEASURE) {
Measure* s2 = static_cast<Measure*>(sp->endElement());
if (s2->tick() < _endSegment->tick())
add(sp);
}
else {
qDebug("2spanner element type %s\n", sp->endElement()->name());
}
}
}
}
update();
}
//---------------------------------------------------------
// setRange
//---------------------------------------------------------
void Selection::setRange(Segment* a, Segment* b, int c, int d)
{
Q_ASSERT(d > c && c >= 0 && d >= 0 && d <= _score->nstaves());
_startSegment = a;
_endSegment = b;
_activeSegment = b;
_staffStart = c;
_staffEnd = d;
setState(SEL_RANGE);
}
//---------------------------------------------------------
// searchSelectedElements
// "ElementList selected"
//---------------------------------------------------------
/**
Rebuild list of selected Elements.
*/
static void collectSelectedElements(void* data, Element* e)
{
QList<const Element*>* l = static_cast<QList<const Element*>*>(data);
if (e->selected())
l->append(e);
}
void Selection::searchSelectedElements()
{
_el.clear();
_score->scanElements(&_el, collectSelectedElements, true);
updateState();
}
//---------------------------------------------------------
// reconstructElementList
// reconstruct list of selected elements after
// undo/redo
//---------------------------------------------------------
void Selection::reconstructElementList()
{
searchSelectedElements();
}
//---------------------------------------------------------
// update
//---------------------------------------------------------
/**
Set select flag for all Elements in select list.
*/
void Selection::update()
{
foreach (Element* e, _el)
e->setSelected(true);
updateState();
}
//---------------------------------------------------------
// dump
//---------------------------------------------------------
void Selection::dump()
{
qDebug("Selection dump: ");
switch(_state) {
case SEL_NONE: qDebug("NONE\n"); return;
case SEL_RANGE: qDebug("RANGE\n"); break;
case SEL_LIST: qDebug("LIST\n"); break;
}
foreach(const Element* e, _el)
qDebug(" %p %s\n", e, e->name());
}
//---------------------------------------------------------
// updateState
/// update selection and input state
//---------------------------------------------------------
void Selection::updateState()
{
int n = _el.size();
Element* e = element();
if (n == 0)
setState(SEL_NONE);
else if (_state == SEL_NONE)
setState(SEL_LIST);
if (!_score->noteEntryMode())
_score->setInputState(e);
}
//---------------------------------------------------------
// setState
//---------------------------------------------------------
void Selection::setState(SelState s)
{
// if (_state != s) {
_state = s;
_score->setSelectionChanged(true);
// }
}
//---------------------------------------------------------
// mimeType
//---------------------------------------------------------
QString Selection::mimeType() const
{
switch (_state) {
default:
case SEL_NONE:
return QString();
case SEL_LIST:
return isSingle() ? mimeSymbolFormat : mimeSymbolListFormat;
case SEL_RANGE:
return mimeStaffListFormat;
}
}
//---------------------------------------------------------
// mimeData
//---------------------------------------------------------
QByteArray Selection::mimeData() const
{
QByteArray a;
switch (_state) {
case SEL_LIST:
if (isSingle()) {
Element* e = element();
if (e->type() == TEXTLINE_SEGMENT)
e = static_cast<TextLineSegment*>(e)->textLine();
a = e->mimeData(QPointF());
}
break;
case SEL_NONE:
break;
case SEL_RANGE:
a = staffMimeData();
break;
}
return a;
}
//---------------------------------------------------------
// staffMimeData
//---------------------------------------------------------
QByteArray Selection::staffMimeData() const
{
QBuffer buffer;
buffer.open(QIODevice::WriteOnly);
Xml xml(&buffer);
xml.header();
xml.clipboardmode = true;
int ticks = tickEnd() - tickStart();
int staves = staffEnd() - staffStart();
xml.stag(QString("StaffList tick=\"%1\" len=\"%2\" staff=\"%3\" staves=\"%4\"").arg(tickStart()).arg(ticks).arg(staffStart()).arg(staves));
Segment* seg1 = _startSegment;
Segment* seg2 = _endSegment;
for (int staffIdx = staffStart(); staffIdx < staffEnd(); ++staffIdx) {
xml.stag(QString("Staff id=\"%1\"").arg(staffIdx));
int startTrack = staffIdx * VOICES;
int endTrack = startTrack + VOICES;
score()->writeSegments(xml, 0, startTrack, endTrack, seg1, seg2, false);
xml.etag();
}
xml.etag();
buffer.close();
return buffer.buffer();
}
//---------------------------------------------------------
// noteList
//---------------------------------------------------------
QList<Note*> Selection::noteList(int selTrack) const
{
QList<Note*>nl;
if (_state == SEL_LIST) {
foreach(Element* e, _el) {
if (e->type() == NOTE)
nl.append(static_cast<Note*>(e));
}
}
else if (_state == SEL_RANGE) {
for (int staffIdx = staffStart(); staffIdx < staffEnd(); ++staffIdx) {
int startTrack = staffIdx * VOICES;
int endTrack = startTrack + VOICES;
for (Segment* seg = _startSegment; seg && seg != _endSegment; seg = seg->next1()) {
if (!(seg->subtype() & (SegChordRest | SegGrace)))
continue;
for (int track = startTrack; track < endTrack; ++track) {
Element* e = seg->element(track);
if (e == 0 || e->type() != CHORD
|| (selTrack != -1 && selTrack != track))
continue;
Chord* c = static_cast<Chord*>(e);
nl.append(c->notes());
}
}
}
}
return nl;
}
//---------------------------------------------------------
// checkStart
// return false if element is NOT a tuplet or is start of a tuplet
// return true if element is part of a tuplet, but not the start
//---------------------------------------------------------
static bool checkStart(Element* e)
{
if (e == 0 || !e->isChordRest())
return false;
ChordRest* cr = static_cast<ChordRest*>(e);
if (!cr->tuplet())
return false;
Tuplet* tuplet = cr->tuplet();
while (tuplet) {
if (tuplet->elements().front() == e)
return false;
tuplet = tuplet->tuplet();
}
return true;
}
//---------------------------------------------------------
// checkEnd
// return false if element is NOT a tuplet or is end of a tuplet
// return true if element is part of a tuplet, but not the end
//---------------------------------------------------------
static bool checkEnd(Element* e)
{
if (e == 0 || !e->isChordRest())
return false;
ChordRest* cr = static_cast<ChordRest*>(e);
if (!cr->tuplet())
return false;
Tuplet* tuplet = cr->tuplet();
while (tuplet) {
if (tuplet->elements().back() == e)
return false;
tuplet = tuplet->tuplet();
}
return true;
}
//---------------------------------------------------------
// canCopy
// return false if range selection intersects a tuplet
//---------------------------------------------------------
bool Selection::canCopy() const
{
if (_state != SEL_RANGE)
return true;
for (int staffIdx = _staffStart; staffIdx != _staffEnd; ++staffIdx)
for (int voice = 0; voice < VOICES; ++voice) {
int track = staffIdx * VOICES + voice;
if (checkStart(_startSegment->element(track)))
return false;
if (! _endSegment)
continue;
// find last segment in the selection.
// Note that _endSegment is the first segment after the selection
Segment *endSegmentSelection = _startSegment;
while (endSegmentSelection->nextCR(track) &&
(endSegmentSelection->nextCR(track)->tick() < _endSegment->tick()))
endSegmentSelection = endSegmentSelection->nextCR(track);
if (checkEnd(endSegmentSelection->element(track)))
return false;
}
return true;
}
//---------------------------------------------------------
// measureRange
// return false if no measure range selected
//---------------------------------------------------------
bool Selection::measureRange(Measure** m1, Measure** m2) const
{
if (state() != SEL_RANGE)
return false;
*m1 = startSegment()->measure();
*m2 = endSegment()->measure();
if (m1 == m2)
return true;
if (*m2 && (*m2)->tick() == endSegment()->tick())
*m2 = (*m2)->prevMeasure();
return true;
}
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