notationhlayout.cpp

LINUX下的混音软件

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
 
    This program is Copyright 2000-2007
        Guillaume Laurent   <[e-mail]>,
        Chris Cannam        <[e-mail]>,
        Richard Bown        <[e-mail]>
 
    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
    Bown to claim authorship of this work have been asserted.
 
    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/


#include "NotationHLayout.h"
#include "misc/Debug.h"
#include <kapplication.h>

#include "base/Composition.h"
#include "base/LayoutEngine.h"
#include "base/NotationTypes.h"
#include "base/Profiler.h"
#include "base/NotationQuantizer.h"
#include "base/RulerScale.h"
#include "base/Segment.h"
#include "base/SegmentNotationHelper.h"
#include "base/Staff.h"
#include "base/ViewElement.h"
#include "gui/editors/guitar/Chord.h"
#include "gui/general/ProgressReporter.h"
#include "gui/widgets/ProgressDialog.h"
#include "NotationChord.h"
#include "NotationElement.h"
#include "NotationGroup.h"
#include "NotationProperties.h"
#include "NotationStaff.h"
#include "NotePixmapFactory.h"
#include <kconfig.h>
#include <qobject.h>
#include <cmath>

namespace Rosegarden
{

using namespace BaseProperties;


NotationHLayout::NotationHLayout(Composition *c, NotePixmapFactory *npf,
                                 const NotationProperties &properties,
                                 QObject* parent, const char* name) :
        ProgressReporter(parent, name),
        HorizontalLayoutEngine(c),
        m_totalWidth(0.),
        m_pageMode(false),
        m_pageWidth(0.),
        m_spacing(100),
        m_proportion(60),
        m_npf(npf),
        m_notationQuantizer(c->getNotationQuantizer()),
        m_properties(properties),
        m_timePerProgressIncrement(0),
        m_staffCount(0)
{
    //    NOTATION_DEBUG << "NotationHLayout::NotationHLayout()" << endl;

    KConfig *config = kapp->config();
    config->setGroup("Notation Options");
    m_keySigCancelMode = config->readNumEntry("keysigcancelmode", 1);
}

NotationHLayout::~NotationHLayout()
{
    // empty
}

std::vector<int>
NotationHLayout::getAvailableSpacings()
{
    if (m_availableSpacings.size() == 0) {
        m_availableSpacings.push_back(30);
        m_availableSpacings.push_back(60);
        m_availableSpacings.push_back(85);
        m_availableSpacings.push_back(100);
        m_availableSpacings.push_back(130);
        m_availableSpacings.push_back(170);
        m_availableSpacings.push_back(220);
    }
    return m_availableSpacings;
}

std::vector<int>
NotationHLayout::getAvailableProportions()
{
    if (m_availableProportions.size() == 0) {
        m_availableProportions.push_back(0);
        m_availableProportions.push_back(20);
        m_availableProportions.push_back(40);
        m_availableProportions.push_back(60);
        m_availableProportions.push_back(80);
        m_availableProportions.push_back(100);
    }
    return m_availableProportions;
}

NotationHLayout::BarDataList &

NotationHLayout::getBarData(Staff &staff)
{
    BarDataMap::iterator i = m_barData.find(&staff);
    if (i == m_barData.end()) {
        m_barData[&staff] = BarDataList();
    }

    return m_barData[&staff];
}

const NotationHLayout::BarDataList &

NotationHLayout::getBarData(Staff &staff) const
{
    return ((NotationHLayout *)this)->getBarData(staff);
}

NotationElementList::iterator
NotationHLayout::getStartOfQuantizedSlice(NotationElementList *notes,
        timeT t)
const
{
    NotationElementList::iterator i = notes->findTime(t);
    NotationElementList::iterator j(i);

    while (true) {
        if (i == notes->begin())
            return i;
        --j;
        if ((*j)->getViewAbsoluteTime() < t)
            return i;
        i = j;
    }
}

void
NotationHLayout::scanStaff(Staff &staff, timeT startTime, timeT endTime)
{
    throwIfCancelled();
    Profiler profiler("NotationHLayout::scanStaff");

    Segment &segment(staff.getSegment());
    bool isFullScan = (startTime == endTime);
    int startBarOfStaff = getComposition()->getBarNumber(segment.getStartTime());

    if (isFullScan) {
        clearBarList(staff);
        startTime = segment.getStartTime();
        endTime = segment.getEndMarkerTime();
    } else {
        startTime = getComposition()->getBarStartForTime(startTime);
        endTime = getComposition()->getBarEndForTime(endTime);
    }

    NotationElementList *notes = staff.getViewElementList();
    BarDataList &barList(getBarData(staff));

    int startBarNo = getComposition()->getBarNumber(startTime);
    int endBarNo = getComposition()->getBarNumber(endTime);
    /*
        if (endBarNo > startBarNo &&
    	getComposition()->getBarStart(endBarNo) == segment.getEndMarkerTime()) {
    	--endBarNo;
        }
    */
    std::string name =
        segment.getComposition()->
        getTrackById(segment.getTrack())->getLabel();
    m_staffNameWidths[&staff] =
        m_npf->getNoteBodyWidth() * 2 +
        m_npf->getTextWidth(Text(name, Text::StaffName));

    NOTATION_DEBUG << "NotationHLayout::scanStaff: full scan " << isFullScan << ", times " << startTime << "->" << endTime << ", bars " << startBarNo << "->" << endBarNo << ", staff name \"" << segment.getLabel() << "\", width " << m_staffNameWidths[&staff] << endl;

    SegmentNotationHelper helper(segment);
    if (isFullScan) {
        helper.setNotationProperties();
    } else {
        helper.setNotationProperties(startTime, endTime);
    }

    ::Rosegarden::Key key = segment.getKeyAtTime(startTime);
    Clef clef = segment.getClefAtTime(startTime);
    TimeSignature timeSignature =
        segment.getComposition()->getTimeSignatureAt(startTime);
    bool barCorrect = true;

    int ottavaShift = 0;
    timeT ottavaEnd = segment.getEndMarkerTime();

    if (isFullScan) {

        NOTATION_DEBUG << "full scan: setting haveOttava false" << endl;

        m_haveOttavaSomewhere[&staff] = false;

    } else if (m_haveOttavaSomewhere[&staff]) {

        NOTATION_DEBUG << "not full scan but ottava is listed" << endl;

        Segment::iterator i = segment.findTime(startTime);
        while (1) {
            if ((*i)->isa(Indication::EventType)) {
                try {
                    Indication indication(**i);
                    if (indication.isOttavaType()) {
                        ottavaShift = indication.getOttavaShift();
                        ottavaEnd = (*i)->getAbsoluteTime() +
                                    indication.getIndicationDuration();
                        break;
                    }
                } catch (...) { }
            }
            if (i == segment.begin())
                break;
            --i;
        }
    }

    NOTATION_DEBUG << "ottava shift at start:" << ottavaShift << ", ottavaEnd " << ottavaEnd << endl;

    KConfig *config = kapp->config();
    config->setGroup("Notation Options");

    int accOctaveMode = config->readNumEntry("accidentaloctavemode", 1);
    AccidentalTable::OctaveType octaveType =
        (accOctaveMode == 0 ? AccidentalTable::OctavesIndependent :
         accOctaveMode == 1 ? AccidentalTable::OctavesCautionary :
         AccidentalTable::OctavesEquivalent);

    int accBarMode = config->readNumEntry("accidentalbarmode", 0);
    AccidentalTable::BarResetType barResetType =
        (accBarMode == 0 ? AccidentalTable::BarResetNone :
         accBarMode == 1 ? AccidentalTable::BarResetCautionary :
         AccidentalTable::BarResetExplicit);

    bool showInvisibles = config->readBoolEntry("showinvisibles", true);

    if (barResetType != AccidentalTable::BarResetNone) {
        //!!! very crude and expensive way of making sure we see the
        // accidentals from previous bar:
        if (startBarNo > segment.getComposition()->getBarNumber(segment.getStartTime())) {
            --startBarNo;
        }
    }

    AccidentalTable accTable(key, clef, octaveType, barResetType);

    for (int barNo = startBarNo; barNo <= endBarNo; ++barNo) {

        std::pair<timeT, timeT> barTimes =
            getComposition()->getBarRange(barNo);

        if (barTimes.first >= segment.getEndMarkerTime()) {
            // clear data if we have any old stuff
            BarDataList::iterator i(barList.find(barNo));
            if (i != barList.end()) {
                barList.erase(i);
            }
            continue; // so as to erase any further bars next time around
        }

        NotationElementList::iterator from =
            getStartOfQuantizedSlice(notes, barTimes.first);

        NOTATION_DEBUG << "getStartOfQuantizedSlice returned " <<
        (from != notes->end() ? (*from)->getViewAbsoluteTime() : -1)
        << " from " << barTimes.first << endl;

        NotationElementList::iterator to =
            getStartOfQuantizedSlice(notes, barTimes.second);

        if (barTimes.second >= segment.getEndMarkerTime()) {
            to = notes->end();
        }

        bool newTimeSig = false;
        timeSignature = getComposition()->getTimeSignatureInBar
                        (barNo, newTimeSig);
        NOTATION_DEBUG << "bar " << barNo << ", startBarOfStaff " << startBarOfStaff
        << ", newTimeSig " << newTimeSig << endl;
        if (barNo == startBarOfStaff)
            newTimeSig = true;

        float fixedWidth = 0.0;
        if (newTimeSig && !timeSignature.isHidden()) {
            fixedWidth += m_npf->getNoteBodyWidth() +
                          m_npf->getTimeSigWidth(timeSignature);
        }

        setBarBasicData(staff, barNo, from, barCorrect, timeSignature, newTimeSig);
        BarDataList::iterator bdli(barList.find(barNo));
        bdli->second.layoutData.needsLayout = true;

        ChunkList &chunks = bdli->second.chunks;
        chunks.clear();

        float lyricWidth = 0;
        int graceCount = 0;

        typedef std::set
            <long> GroupIdSet;
        GroupIdSet groupIds;

        NOTATION_DEBUG << "NotationHLayout::scanStaff: bar " << barNo << ", from " << barTimes.first << ", to " << barTimes.second << " (end " << segment.getEndMarkerTime() << "); from is at " << (from == notes->end() ? -1 : (*from)->getViewAbsoluteTime()) << ", to is at " << (to == notes->end() ? -1 : (*to)->getViewAbsoluteTime()) << endl;

        timeT actualBarEnd = barTimes.first;

        accTable.newBar();

        for (NotationElementList::iterator itr = from; itr != to; ++itr) {

            NotationElement *el = static_cast<NotationElement*>((*itr));
            NOTATION_DEBUG << "element is a " << el->event()->getType() << endl;

            if (ottavaShift != 0) {
                if (el->event()->getAbsoluteTime() >= ottavaEnd) {
                    NOTATION_DEBUG << "reached end of ottava" << endl;
                    ottavaShift = 0;
                }
            }

            bool invisible = false;
            if (el->event()->get<Bool>(INVISIBLE, invisible) && invisible) {
                if (!showInvisibles)
                    continue;
            }

            if (el->event()->has(BEAMED_GROUP_ID)) {
                NOTATION_DEBUG << "element is beamed" << endl;
                long groupId = el->event()->get<Int>(BEAMED_GROUP_ID);
                if (groupIds.find(groupId) == groupIds.end()) {
                    NOTATION_DEBUG << "it's a new beamed group, applying stem properties" << endl;
                    NotationGroup group(*staff.getViewElementList(),
                                        itr,
                                        m_notationQuantizer,
                                        barTimes,
                                        m_properties,
                                        clef, key);
                    group.applyStemProperties();
                    groupIds.insert(groupId);
                }
            }

            if (el->event()->isa(Clef::EventType)) {

                //		NOTATION_DEBUG << "Found clef" << endl;
                chunks.push_back(Chunk(el->event()->getSubOrdering(),
                                       getLayoutWidth(*el, key)));

                clef = Clef(*el->event());
                accTable.newClef(clef);

            } else if (el->event()->isa(::Rosegarden::Key::EventType)) {

                //		NOTATION_DEBUG << "Found key" << endl;
                chunks.push_back(Chunk(el->event()->getSubOrdering(),
                                       getLayoutWidth(*el, key)));

                key = ::Rosegarden::Key(*el->event());

                accTable = AccidentalTable
                           (key, clef, octaveType, barResetType);

            } else if (el->event()->isa(Text::EventType)) {