Added old abandoned KDE3 version of the RoseGarden MIDI tool

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/rosegarden@1097595 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 731 insertions, 0 deletions

diff --git a/src/gui/editors/notation/NotationVLayout.cpp b/src/gui/editors/notation/NotationVLayout.cpp
new file mode 100644
index 0000000..c746a30
--- /dev/null
+++ b/src/gui/editors/notation/NotationVLayout.cpp
@@ -0,0 +1,731 @@
+/* -*- 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 2000-2008
+        Guillaume Laurent   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+ 
+    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 <cmath>
+#include "NotationVLayout.h"
+#include "misc/Debug.h"
+
+#include <klocale.h>
+#include "base/Composition.h"
+#include "base/Event.h"
+#include "base/LayoutEngine.h"
+#include "base/NotationRules.h"
+#include "base/NotationTypes.h"
+#include "base/NotationQuantizer.h"
+#include "base/Staff.h"
+#include "gui/general/ProgressReporter.h"
+#include "gui/editors/guitar/Chord.h"
+#include "NotationChord.h"
+#include "NotationElement.h"
+#include "NotationProperties.h"
+#include "NotationStaff.h"
+#include "NotePixmapFactory.h"
+#include <kmessagebox.h>
+#include <qobject.h>
+#include <qstring.h>
+#include <qwidget.h>
+
+
+namespace Rosegarden
+{
+
+using namespace BaseProperties;
+
+
+NotationVLayout::NotationVLayout(Composition *c, NotePixmapFactory *npf,
+                                 const NotationProperties &properties,
+                                 QObject* parent, const char* name) :
+        ProgressReporter(parent, name),
+        m_composition(c),
+        m_npf(npf),
+        m_notationQuantizer(c->getNotationQuantizer()),
+        m_properties(properties)
+{
+    // empty
+}
+
+NotationVLayout::~NotationVLayout()
+{
+    // empty
+}
+
+NotationVLayout::SlurList &
+
+NotationVLayout::getSlurList(Staff &staff)
+{
+    SlurListMap::iterator i = m_slurs.find(&staff);
+    if (i == m_slurs.end()) {
+        m_slurs[&staff] = SlurList();
+    }
+
+    return m_slurs[&staff];
+}
+
+void
+NotationVLayout::reset()
+{
+    m_slurs.clear();
+}
+
+void
+NotationVLayout::resetStaff(Staff &staff, timeT, timeT)
+{
+    getSlurList(staff).clear();
+}
+
+void
+NotationVLayout::scanStaff(Staff &staffBase, timeT, timeT)
+{
+    START_TIMING;
+
+    NotationStaff &staff = dynamic_cast<NotationStaff &>(staffBase);
+    NotationElementList *notes = staff.getViewElementList();
+
+    NotationElementList::iterator from = notes->begin();
+    NotationElementList::iterator to = notes->end();
+    NotationElementList::iterator i;
+
+    for (i = from; i != to; ++i) {
+
+        NotationElement *el = static_cast<NotationElement*>(*i);
+
+        // Displaced Y will only be used for certain events -- in
+        // particular not for notes, whose y-coord is obviously kind
+        // of meaningful.
+        double displacedY = 0.0;
+        long dyRaw = 0;
+        el->event()->get<Int>(DISPLACED_Y, dyRaw);
+        displacedY = double(dyRaw * m_npf->getLineSpacing()) / 1000.0;
+
+        el->setLayoutY(staff.getLayoutYForHeight( -9) + displacedY);
+
+        if (el->isRest()) {
+
+            // rests for notes longer than the minim have hotspots
+            // aligned with the line above the middle line; the rest
+            // are aligned with the middle line
+
+            long noteType;
+            bool hasNoteType = el->event()->get
+                               <Int>(NOTE_TYPE, noteType);
+            if (hasNoteType && noteType > Note::Minim) {
+                el->setLayoutY(staff.getLayoutYForHeight(6) + displacedY);
+            } else {
+                el->setLayoutY(staff.getLayoutYForHeight(4) + displacedY);
+            }
+
+            // Fix for bug 1090767 Rests outside staves have wrong glyphs
+            // by William <rosegarden4c AT orthoset.com>
+            // We use a "rest-outside-stave" glyph for any minim/semibreve/breve
+            // rest that has been displaced vertically e.g. by fine-positioning
+            // outside the stave. For small vertical displacements that keep
+            // the rest inside the stave, we use the "rest-inside-stave" glyph
+            // and also discretise the displacement into multiples of the
+            // stave-line spacing. The outside-stave glyphs match the character
+            // numbers 1D13A, 1D13B and 1D13C in the Unicode 4.0 standard.
+
+            if (hasNoteType && (displacedY > 0.1 || displacedY < -0.1)) {
+
+                // a fiddly check for transition from inside to outside:
+
+                int min = -1, max = 1;
+
+                switch (noteType) {
+                case Note::Breve:
+                    min = -1;
+                    max = 2;
+                    break;
+                case Note::Semibreve:
+                    min = -1;
+                    max = 3;
+                    break;
+                case Note::Minim:
+                    min = -2;
+                    max = 2;
+                    break;
+                case Note::Crotchet:
+                    min = -1;
+                    max = 3;
+                    break;
+                case Note::Quaver:
+                    min = -2;
+                    max = 3;
+                    break;
+                case Note::Semiquaver:
+                    min = -3;
+                    max = 3;
+                    break;
+                case Note::Demisemiquaver:
+                    min = -3;
+                    max = 4;
+                    break;
+                case Note::Hemidemisemiquaver:
+                    min = -4;
+                    max = 4;
+                    break;
+                }
+
+                bool outside = false;
+
+                if (noteType == Note::Breve) {
+                    if (nearbyint(displacedY) < min * m_npf->getLineSpacing() ||
+                            nearbyint(displacedY) > max * m_npf->getLineSpacing()) {
+                        outside = true;
+                    }
+                } else {
+                    if ((int)displacedY < min * m_npf->getLineSpacing() ||
+                            (int)displacedY > max * m_npf->getLineSpacing()) {
+                        outside = true;
+                    }
+                }
+
+                el->event()->setMaybe<Bool>(m_properties.REST_OUTSIDE_STAVE,
+                                            outside);
+
+                if (!outside) {
+                    displacedY = (double)m_npf->getLineSpacing() *
+                                 (int(nearbyint((double)displacedY /
+                                                m_npf->getLineSpacing())));
+                    if (noteType > Note::Minim)
+                        el->setLayoutY(staff.getLayoutYForHeight(6) + displacedY);
+                    else
+                        el->setLayoutY(staff.getLayoutYForHeight(4) + displacedY);
+                }
+
+                //		if (displacedY != 0.0)
+                //		    NOTATION_DEBUG << "REST_OUTSIDE_STAVE AFTER "
+                //			       << " : displacedY : " << displacedY
+                //			       << " line-spacing : " << m_npf->getLineSpacing()
+                //			       << " time : " << (el->getViewAbsoluteTime())
+                //			       << endl;
+            } else {
+                el->event()->setMaybe<Bool>(m_properties.REST_OUTSIDE_STAVE,
+                                            false);
+            }
+
+        } else if (el->isNote()) {
+
+            NotationChord chord(*notes, i, m_notationQuantizer, m_properties);
+            if (chord.size() == 0)
+                continue;
+
+            std::vector<int> h;
+            for (unsigned int j = 0; j < chord.size(); ++j) {
+                long height = 0;
+                if (!(*chord[j])->event()->get
+                        <Int>
+                        (m_properties.HEIGHT_ON_STAFF, height)) {
+                    std::cerr << QString("ERROR: Event in chord at %1 has no HEIGHT_ON_STAFF property!\nThis is a bug (the program would previously have crashed by now)").arg((*chord[j])->getViewAbsoluteTime()) << std::endl;
+                    (*chord[j])->event()->dump(std::cerr);
+                }
+                h.push_back(height);
+            }
+            bool stemmed = chord.hasStem();
+            bool stemUp = chord.hasStemUp();
+            bool hasNoteHeadShifted = chord.hasNoteHeadShifted();
+
+            unsigned int flaggedNote = (stemUp ? chord.size() - 1 : 0);
+
+            bool hasShifted = chord.hasNoteHeadShifted();
+
+            double y0 = -1E50;          // A very unlikely Y layout value
+
+            for (unsigned int j = 0; j < chord.size(); ++j) {
+
+                el = static_cast<NotationElement*>(*chord[j]);
+                el->setLayoutY(staff.getLayoutYForHeight(h[j]));
+
+                // Look for collision
+                const double eps = 0.001;
+                Event *eel = el->event();
+                double y = el->getLayoutY();
+                if (eel->has("pitch")) {
+                    el->setIsColliding(fabs(y - y0) < eps);
+                    y0 = y;
+                }
+
+
+                // These calculations and assignments are pretty much final
+                // if the chord is not in a beamed group, but if it is then
+                // they will be reworked by NotationGroup::applyBeam, which
+                // is called from NotationHLayout::layout, which is called
+                // after this.  Any inaccuracies here for beamed groups
+                // should be stamped out there.
+
+                //                el->event()->setMaybe<Bool>(STEM_UP, stemUp);
+                el->event()->setMaybe<Bool>(m_properties.VIEW_LOCAL_STEM_UP, stemUp);
+
+                bool primary =
+                    ((stemmed && stemUp) ? (j == 0) : (j == chord.size() - 1));
+                el->event()->setMaybe<Bool>
+                (m_properties.CHORD_PRIMARY_NOTE, primary);
+
+                if (primary) {
+                    el->event()->setMaybe<Int>
+                    (m_properties.CHORD_MARK_COUNT, chord.getMarkCountForChord());
+                }
+
+                bool shifted = chord.isNoteHeadShifted(chord[j]);
+                el->event()->setMaybe<Bool>
+                (m_properties.NOTE_HEAD_SHIFTED, shifted);
+
+                el->event()->setMaybe<Bool>
+                (m_properties.NOTE_DOT_SHIFTED, false);
+                if (hasShifted && stemUp) {
+                    long dots = 0;
+                    (void)el->event()->get
+                    <Int>(NOTE_DOTS, dots);
+                    if (dots > 0) {
+                        el->event()->setMaybe<Bool>
+                        (m_properties.NOTE_DOT_SHIFTED, true);
+                    }
+                }
+
+                el->event()->setMaybe<Bool>
+                (m_properties.NEEDS_EXTRA_SHIFT_SPACE,
+                 hasNoteHeadShifted && !stemUp);
+
+                el->event()->setMaybe<Bool>
+                (m_properties.DRAW_FLAG, j == flaggedNote);
+
+                int stemLength = -1;
+                if (j != flaggedNote) {
+                    stemLength = staff.getLayoutYForHeight(h[flaggedNote]) -
+                                 staff.getLayoutYForHeight(h[j]);
+                    if (stemLength < 0)
+                        stemLength = -stemLength;
+                    //                    NOTATION_DEBUG << "Setting stem length to "
+                    //                                         << stemLength << endl;
+                } else {
+                    int minStemLength = stemLength;
+                    if (h[j] < -2 && stemUp) {
+                        //!!! needs tuning, & applying for beamed stems too
+                        minStemLength = staff.getLayoutYForHeight(h[j]) -
+                                        staff.getLayoutYForHeight(4);
+                    } else if (h[j] > 10 && !stemUp) {
+                        minStemLength = staff.getLayoutYForHeight(4) -
+                                        staff.getLayoutYForHeight(h[j]);
+                    }
+                    stemLength = std::max(minStemLength, stemLength);
+                }
+
+                el->event()->setMaybe<Int>
+                    (m_properties.UNBEAMED_STEM_LENGTH, stemLength);
+            }
+
+
+            // #938545 (Broken notation: Duplicated note can float
+            // outside stave) -- Need to cope with the case where a
+            // note that's not a member of a chord (different stem
+            // direction &c) falls between notes that are members.
+            // Not optimal, as we can end up scanning the chord
+            // multiple times (we'll return to it after scanning the
+            // contained note).  [We can't just iterate over all
+            // elements within the chord (as we can in hlayout)
+            // because we need them in height order.]
+
+            i = chord.getFirstElementNotInChord();
+            if (i == notes->end())
+                i = chord.getFinalElement();
+            else
+                --i;
+
+        } else {
+
+            if (el->event()->isa(Clef::EventType)) {
+
+                // clef pixmaps have the hotspot placed to coincide
+                // with the pitch of the clef -- so the alto clef
+                // should be "on" the middle line, the treble clef
+                // "on" the line below the middle, etc
+
+                el->setLayoutY(staff.getLayoutYForHeight
+                               (Clef(*el->event()).getAxisHeight()));
+
+            } else if (el->event()->isa(Rosegarden::Key::EventType)) {
+
+                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)
+{
+    NotationRules rules;
+
+    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 = rules.isStemUp(h);
+            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);
+}
+
+}