C++ Layer::GetDrawingStemDir方法代码示例

int Artic::CalcArtic(FunctorParams *functorParams)
{
    FunctorDocParams *params = dynamic_cast<FunctorDocParams *>(functorParams);
    assert(params);

    /************** Get the parent and the stem direction **************/

    LayerElement *parent = NULL;
    Note *parentNote = NULL;
    Chord *parentChord = dynamic_cast<Chord *>(this->GetFirstParent(CHORD, 2));
    data_STEMDIRECTION stemDir = STEMDIRECTION_NONE;
    data_STAFFREL place = STAFFREL_NONE;

    if (!parentChord) {
        parentNote = dynamic_cast<Note *>(this->GetFirstParent(NOTE));
        parent = parentNote;
    }
    else {
        parent = parentChord;
    }

    if (!parentChord && !parentNote) {
        // no parent chord or note, nothing we can do...
        return FUNCTOR_CONTINUE;
    }

    Staff *staff = dynamic_cast<Staff *>(this->GetFirstParent(STAFF));
    assert(staff);
    Layer *layer = dynamic_cast<Layer *>(this->GetFirstParent(LAYER));
    assert(layer);

    stemDir = parentNote ? parentNote->GetDrawingStemDir() : parentChord->GetDrawingStemDir();

    /************** placement **************/

    bool allowAbove = true;

    // for now we ignore within @place
    if (this->HasPlace() && (this->GetPlace() != STAFFREL_within)) {
        place = this->GetPlace();
        // If we have a place indication do not allow to be changed to above
        allowAbove = false;
    }
    else if (layer->GetDrawingStemDir() != STEMDIRECTION_NONE) {
        place = (layer->GetDrawingStemDir() == STEMDIRECTION_up) ? STAFFREL_above : STAFFREL_below;
        // If we have more than one layer do not allow to be changed to above
        allowAbove = false;
    }
    else if (stemDir == STEMDIRECTION_up)
        place = STAFFREL_below;
    else
        place = STAFFREL_above;

    /************** set it to both the inside and outside part **************/

    ArticPart *insidePart = this->GetInsidePart();
    ArticPart *outsidePart = this->GetOutsidePart();

    if (insidePart) {
        insidePart->SetPlace(place);
    }

    if (outsidePart) {
        // If allowAbove is true it will place the above if the content requires so (even if place below if given)
        if (place == STAFFREL_below && allowAbove && outsidePart->AlwaysAbove()) place = STAFFREL_above;
        outsidePart->SetPlace(place);
    }

    /************** calculate the y position **************/

    Staff *staffAbove = NULL;
    Staff *staffBelow = NULL;

    // Cross-staff handling of articulation will need to be re-thought. We can look at assiging a cross-staff to the
    // appropriate ArticPart
    // (see below) - For chords, we need to distinguish cross-staff chords and cross-staff chord notes
    if (parent->m_crossStaff && parent->m_crossLayer) {
        staff = parent->m_crossStaff;
        staffAbove = staff;
        staffBelow = staff;
    }
    else if (parentChord) {
        parentChord->GetCrossStaffExtremes(staffAbove, staffBelow);
    }

    int staffYBottom = -params->m_doc->GetDrawingStaffSize(staff->m_drawingStaffSize);
    // Avoid in artic to be in legder lines
    int yInAbove = std::max(
        parent->GetDrawingTop(params->m_doc, staff->m_drawingStaffSize, false) - staff->GetDrawingY(), staffYBottom);
    int yInBelow
        = std::min(parent->GetDrawingBottom(params->m_doc, staff->m_drawingStaffSize, false) - staff->GetDrawingY(), 0);
    int yOutAbove = std::max(yInAbove, 0);
    int yOutBelow = std::min(yInBelow, staffYBottom);

    // Does not work properly with chords, needs rethinking - It might be better to make artic or articPart relative to
    // notes
    // The problem is that in MEI artic are children of chord element and not of the notes
    if (insidePart) {
        if (insidePart->GetPlace() == STAFFREL_above) {
            insidePart->SetDrawingYRel(yInAbove);
//.........这里部分代码省略.........

void View::DrawSlurInitial(FloatingCurvePositioner *curve, Slur *slur, int x1, int x2, Staff *staff, char spanningType)
{
    Beam *parentBeam = NULL;
    Chord *startParentChord = NULL;
    Chord *endParentChord = NULL;
    Note *startNote = NULL;
    Note *endNote = NULL;
    Chord *startChord = NULL;
    Chord *endChord = NULL;

    curvature_CURVEDIR drawingCurveDir = curvature_CURVEDIR_above;
    data_STEMDIRECTION startStemDir = STEMDIRECTION_NONE;
    data_STEMDIRECTION endStemDir = STEMDIRECTION_NONE;
    data_STEMDIRECTION stemDir = STEMDIRECTION_NONE;
    bool isGraceToNoteSlur = false;
    int y1 = staff->GetDrawingY();
    int y2 = staff->GetDrawingY();

    /************** parent layers **************/

    LayerElement *start = dynamic_cast<LayerElement *>(slur->GetStart());
    LayerElement *end = dynamic_cast<LayerElement *>(slur->GetEnd());

    if (!start || !end) {
        // no start and end, obviously nothing to do...
        return;
    }

    if (start->Is(TIMESTAMP_ATTR) && end->Is(TIMESTAMP_ATTR)) {
        // for now ignore slur using 2 tstamps
        return;
    }

    if (start->Is(NOTE)) {
        startNote = dynamic_cast<Note *>(start);
        assert(startNote);
        startParentChord = startNote->IsChordTone();
        startStemDir = startNote->GetDrawingStemDir();
    }
    else if (start->Is(CHORD)) {
        startChord = dynamic_cast<Chord *>(start);
        assert(startChord);
        startStemDir = startChord->GetDrawingStemDir();
    }
    if (end->Is(NOTE)) {
        endNote = dynamic_cast<Note *>(end);
        assert(endNote);
        endParentChord = endNote->IsChordTone();
        endStemDir = endNote->GetDrawingStemDir();
    }
    else if (end->Is(CHORD)) {
        endChord = dynamic_cast<Chord *>(end);
        assert(endChord);
        endStemDir = endChord->GetDrawingStemDir();
    }

    if (startNote && endNote && startNote->IsGraceNote() && !endNote->IsGraceNote()) {
        isGraceToNoteSlur = true;
    }

    Layer *layer = NULL;
    LayerElement *layerElement = NULL;
    // For now, with timestamps, get the first layer. We should eventually look at the @layerident (not implemented)
    if (!start->Is(TIMESTAMP_ATTR)) {
        layer = dynamic_cast<Layer *>(start->GetFirstParent(LAYER));
        layerElement = start;
    }
    else {
        layer = dynamic_cast<Layer *>(end->GetFirstParent(LAYER));
        layerElement = end;
    }
    assert(layer);

    if (!start->Is(TIMESTAMP_ATTR) && !end->Is(TIMESTAMP_ATTR) && (spanningType == SPANNING_START_END)) {
        System *system = dynamic_cast<System *>(staff->GetFirstParent(SYSTEM));
        assert(system);
        // If we have a start to end situation, then store the curvedir in the slur for mixed drawing stem dir
        // situations
        if (system->HasMixedDrawingStemDir(start, end)) {
            slur->SetDrawingCurvedir(curvature_CURVEDIR_above);
        }
    }

    /************** calculate the radius for adjusting the x position **************/

    int startRadius = 0;
    if (!start->Is(TIMESTAMP_ATTR)) {
        startRadius = start->GetDrawingRadius(m_doc);
    }

    int endRadius = 0;
    if (!end->Is(TIMESTAMP_ATTR)) {
        endRadius = end->GetDrawingRadius(m_doc);
    }

    /************** note stem dir **************/

    if (spanningType == SPANNING_START_END) {
        stemDir = startStemDir;
    }
//.........这里部分代码省略.........