notationvlayout.cpp

LINUX下的混音软件

                el->setLayoutY(staff.getLayoutYForHeight(12));

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

                std::string type = Text::UnspecifiedType;
                el->event()->get<String>(Text::TextTypePropertyName, type);

                if (type == Text::Dynamic ||
                        type == Text::LocalDirection ||
                        type == Text::UnspecifiedType) {
                    el->setLayoutY(staff.getLayoutYForHeight(-7) + displacedY);
                } else if (type == Text::Lyric) {
                    long verse = 0;
                    el->event()->get<Int>(Text::LyricVersePropertyName, verse);
                    el->setLayoutY(staff.getLayoutYForHeight(-10 - 3 * verse) + displacedY);
                } else if (type == Text::Annotation) {
                    el->setLayoutY(staff.getLayoutYForHeight(-13) + displacedY);
                } else {
                    el->setLayoutY(staff.getLayoutYForHeight(22) + displacedY);
                }

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

                try {
                    std::string indicationType =
                        el->event()->get
                        <String>(Indication::IndicationTypePropertyName);

                    if (indicationType == Indication::Slur ||
                            indicationType == Indication::PhrasingSlur) {
                        getSlurList(staff).push_back(i);
                    }

                    if (indicationType == Indication::OttavaUp ||
                            indicationType == Indication::QuindicesimaUp) {
                        el->setLayoutY(staff.getLayoutYForHeight(15) + displacedY);
                    } else {
                        el->setLayoutY(staff.getLayoutYForHeight( -9) + displacedY);
                    }
                } catch (...) {
                    el->setLayoutY(staff.getLayoutYForHeight( -9) + displacedY);
                }

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

                el->setLayoutY(staff.getLayoutYForHeight(22) + displacedY);
            }
        }
    }

    PRINT_ELAPSED("NotationVLayout::scanStaff");
}

void
NotationVLayout::finishLayout(timeT, timeT)
{
    START_TIMING;

    for (SlurListMap::iterator mi = m_slurs.begin();
            mi != m_slurs.end(); ++mi) {

        for (SlurList::iterator si = mi->second.begin();
                si != mi->second.end(); ++si) {

            NotationElementList::iterator i = *si;
            NotationStaff &staff = dynamic_cast<NotationStaff &>(*(mi->first));

            positionSlur(staff, i);
        }
    }

    PRINT_ELAPSED("NotationVLayout::finishLayout");
}

void
NotationVLayout::positionSlur(NotationStaff &staff,
                              NotationElementList::iterator i)
{
    bool phrasing = ((*i)->event()->get
                     <String>(Indication::IndicationTypePropertyName)
                     == Indication::PhrasingSlur);

    NotationElementList::iterator scooter = i;

    timeT slurDuration = (*i)->event()->getDuration();
    if (slurDuration == 0 && (*i)->event()->has("indicationduration")) {
        slurDuration = (*i)->event()->get
                       <Int>("indicationduration"); // obs property
    }
    timeT endTime = (*i)->getViewAbsoluteTime() + slurDuration;

    bool haveStart = false;

    int startTopHeight = 4, endTopHeight = 4,
                                           startBottomHeight = 4, endBottomHeight = 4,
                                                               maxTopHeight = 4, minBottomHeight = 4,
                                                                                                   maxCount = 0, minCount = 0;

    int startX = (int)(*i)->getLayoutX(), endX = startX + 10;
    bool startStemUp = false, endStemUp = false;
    long startMarks = 0, endMarks = 0;
    bool startTied = false, endTied = false;
    bool beamAbove = false, beamBelow = false;
    bool dynamic = false;

    std::vector<Event *> stemUpNotes, stemDownNotes;

    // Scan the notes spanned by the slur, recording the top and
    // bottom heights of the first and last chords, plus the presence
    // of any troublesome beams and high or low notes in the body.

    while (scooter != staff.getViewElementList()->end()) {

        if ((*scooter)->getViewAbsoluteTime() >= endTime)
            break;
        Event *event = (*scooter)->event();

        if (event->isa(Note::EventType)) {

            long h = 0;
            if (!event->get
                    <Int>(m_properties.HEIGHT_ON_STAFF, h)) {
                KMessageBox::sorry
                ((QWidget *)parent(), i18n("Spanned note at %1 has no HEIGHT_ON_STAFF property!\nThis is a bug (the program would previously have crashed by now)").arg((*scooter)->getViewAbsoluteTime()));
                event->dump(std::cerr);
            }

            bool stemUp = (h <= 4);
            event->get
            <Bool>(m_properties.VIEW_LOCAL_STEM_UP, stemUp);

            bool beamed = false;
            event->get
            <Bool>(m_properties.BEAMED, beamed);

            bool primary = false;

            if (event->get
                    <Bool>
                    (m_properties.CHORD_PRIMARY_NOTE, primary) && primary) {

                NotationChord chord(*(staff.getViewElementList()), scooter,
                                    m_notationQuantizer, m_properties);

                if (beamed) {
                    if (stemUp)
                        beamAbove = true;
                    else
                        beamBelow = true;
                }

                if (!haveStart) {

                    startBottomHeight = chord.getLowestNoteHeight();
                    startTopHeight = chord.getHighestNoteHeight();
                    minBottomHeight = startBottomHeight;
                    maxTopHeight = startTopHeight;

                    startX = (int)(*scooter)->getLayoutX();
                    startStemUp = stemUp;
                    startMarks = chord.getMarkCountForChord();

                    bool tied = false;
                    if ((event->get
                            <Bool>(TIED_FORWARD, tied) && tied) ||
                            (event->get<Bool>(TIED_BACKWARD, tied) && tied)) {
                        startTied = true;
                    }

                    haveStart = true;

                } else {
                    if (chord.getLowestNoteHeight() < minBottomHeight) {
                        minBottomHeight = chord.getLowestNoteHeight();
                        ++minCount;
                    }
                    if (chord.getHighestNoteHeight() > maxTopHeight) {
                        maxTopHeight = chord.getHighestNoteHeight();
                        ++maxCount;
                    }
                }

                endBottomHeight = chord.getLowestNoteHeight();
                endTopHeight = chord.getHighestNoteHeight();
                endX = (int)(*scooter)->getLayoutX();
                endStemUp = stemUp;
                endMarks = chord.getMarkCountForChord();

                bool tied = false;
                if ((event->get
                        <Bool>(TIED_FORWARD, tied) && tied) ||
                        (event->get<Bool>(TIED_BACKWARD, tied) && tied)) {
                    endTied = true;
                }
            }

            if (!beamed) {
                if (stemUp)
                    stemUpNotes.push_back(event);
                else
                    stemDownNotes.push_back(event);
            }

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

            try {
                std::string indicationType =
                    event->get
                    <String>(Indication::IndicationTypePropertyName);

                if (indicationType == Indication::Crescendo ||
                        indicationType == Indication::Decrescendo)
                    dynamic = true;
            } catch (...) { }
        }

        ++scooter;
    }

    bool above = true;

    if ((*i)->event()->has(NotationProperties::SLUR_ABOVE) &&
            (*i)->event()->isPersistent<Bool>(NotationProperties::SLUR_ABOVE)) {

        (*i)->event()->get
        <Bool>(NotationProperties::SLUR_ABOVE, above);

    } else if (phrasing) {

        int score = 0; // for "above"

        if (dynamic)
            score += 2;

        if (startStemUp == endStemUp) {
            if (startStemUp)
                score -= 2;
            else
                score += 2;
        } else if (beamBelow != beamAbove) {
            if (beamAbove)
                score -= 2;
            else
                score += 2;
        }

        if (maxTopHeight < 6)
            score += 1;
        else if (minBottomHeight > 2)
            score -= 1;

        if (stemUpNotes.size() != stemDownNotes.size()) {
            if (stemUpNotes.size() < stemDownNotes.size())
                score += 1;
            else
                score -= 1;
        }

        above = (score >= 0);

    } else {

        if (startStemUp == endStemUp) {
            above = !startStemUp;
        } else if (beamBelow) {
            above = true;
        } else if (beamAbove) {
            above = false;
        } else if (stemUpNotes.size() != stemDownNotes.size()) {
            above = (stemUpNotes.size() < stemDownNotes.size());
        } else {
            above = ((startTopHeight - 4) + (endTopHeight - 4) +
                     (4 - startBottomHeight) + (4 - endBottomHeight) <= 8);
        }
    }

    // now choose the actual y-coord of the slur based on the side
    // we've decided to put it on

    int startHeight, endHeight;
    int startOffset = 2, endOffset = 2;

    if (above) {

        if (!startStemUp)
            startOffset += startMarks * 2;
        else
            startOffset += 5;

        if (!endStemUp)
            endOffset += startMarks * 2;
        else
            endOffset += 5;

        startHeight = startTopHeight + startOffset;
        endHeight = endTopHeight + endOffset;

        bool maxRelevant = ((maxTopHeight != endTopHeight) || (maxCount > 1));
        if (maxRelevant) {
            int midHeight = (startHeight + endHeight) / 2;
            if (maxTopHeight > midHeight - 1) {
                startHeight += maxTopHeight - midHeight + 1;
                endHeight += maxTopHeight - midHeight + 1;
            }
        }

    } else {

        if (startStemUp)
            startOffset += startMarks * 2;
        else
            startOffset += 5;

        if (endStemUp)
            endOffset += startMarks * 2;
        else
            endOffset += 5;

        startHeight = startBottomHeight - startOffset;
        endHeight = endBottomHeight - endOffset;

        bool minRelevant = ((minBottomHeight != endBottomHeight) || (minCount > 1));
        if (minRelevant) {
            int midHeight = (startHeight + endHeight) / 2;
            if (minBottomHeight < midHeight + 1) {
                startHeight -= midHeight - minBottomHeight + 1;
                endHeight -= midHeight - minBottomHeight + 1;
            }
        }
    }

    int y0 = staff.getLayoutYForHeight(startHeight),
             y1 = staff.getLayoutYForHeight(endHeight);

    int dy = y1 - y0;
    int length = endX - startX;
    int diff = staff.getLayoutYForHeight(0) - staff.getLayoutYForHeight(3);
    if (length < diff*10)
        diff /= 2;
    if (length > diff*3)
        length -= diff / 2;
    startX += diff;

    (*i)->event()->setMaybe<Bool>(NotationProperties::SLUR_ABOVE, above);
    (*i)->event()->setMaybe<Int>(m_properties.SLUR_Y_DELTA, dy);
    (*i)->event()->setMaybe<Int>(m_properties.SLUR_LENGTH, length);

    double displacedX = 0.0, displacedY = 0.0;

    long dxRaw = 0;
    (*i)->event()->get<Int>(DISPLACED_X, dxRaw);
    displacedX = double(dxRaw * m_npf->getNoteBodyWidth()) / 1000.0;

    long dyRaw = 0;
    (*i)->event()->get<Int>(DISPLACED_Y, dyRaw);
    displacedY = double(dyRaw * m_npf->getLineSpacing()) / 1000.0;

    (*i)->setLayoutX(startX + displacedX);
    (*i)->setLayoutY(y0 + displacedY);
}

}