notationselector.cpp

LINUX下的混音软件

    }

    if (clefEvt)
        clef = Clef(*clefEvt);
    if (keyEvt)
        key = ::Rosegarden::Key(*keyEvt);

    int height = targetStaff->getHeightAtCanvasCoords(x, y);
    int pitch = clickedPitch;

    if (height != clickedHeight)
        pitch =
            Pitch
            (height, clef, key, clickedAccidental).getPerformancePitch();

    if (pitch < clickedPitch) {
        if (height < -10) {
            height = -10;
            pitch = Pitch
                    (height, clef, key, clickedAccidental).getPerformancePitch();
        }
    } else if (pitch > clickedPitch) {
        if (height > 18) {
            height = 18;
            pitch = Pitch
                    (height, clef, key, clickedAccidental).getPerformancePitch();
        }
    }

    bool singleNonNotePreview = !m_clickedElement->isNote() &&
                                selection->getSegmentEvents().size() == 1;

    if (!final && !singleNonNotePreview) {

        if ((pitch != m_lastDragPitch || dragTime != m_lastDragTime) &&
                m_clickedElement->isNote()) {

            m_nParentView->showPreviewNote(targetStaff->getId(),
                                           layoutX, pitch, height,
                                           Note::getNearestNote(duration));
            m_lastDragPitch = pitch;
            m_lastDragTime = dragTime;
        }

    } else {

        m_nParentView->clearPreviewNote();

        KMacroCommand *command = new KMacroCommand(MoveCommand::getGlobalName());
        bool haveSomething = false;

        MoveCommand *mc = 0;
        Event *lastInsertedEvent = 0;

        if (pitch != clickedPitch && m_clickedElement->isNote()) {
            command->addCommand(new TransposeCommand(pitch - clickedPitch,
                                *selection));
            haveSomething = true;
        }

        if (targetStaff != m_selectedStaff) {
            command->addCommand(new MoveAcrossSegmentsCommand
                                (m_selectedStaff->getSegment(),
                                 targetStaff->getSegment(),
                                 dragTime - clickedTime + selection->getStartTime(),
                                 true,
                                 *selection));
            haveSomething = true;
        } else {
            if (dragTime != clickedTime) {
                mc = new MoveCommand
                     (m_selectedStaff->getSegment(),  //!!!sort
                      dragTime - clickedTime, true, *selection);
                command->addCommand(mc);
                haveSomething = true;
            }
        }

        if (haveSomething) {

            m_nParentView->addCommandToHistory(command);

            if (mc && singleNonNotePreview) {

                lastInsertedEvent = mc->getLastInsertedEvent();

                if (lastInsertedEvent) {
                    m_nParentView->setSingleSelectedEvent(targetStaff->getId(),
                                                          lastInsertedEvent);

                    ViewElementList::iterator vli =
                        targetStaff->findEvent(lastInsertedEvent);

                    if (vli != targetStaff->getViewElementList()->end()) {
                        m_clickedElement = dynamic_cast<NotationElement *>(*vli);
                    } else {
                        m_clickedElement = 0;
                    }

                    m_selectionRect->setX(x);
                    m_selectionRect->setY(y);
                }
            }
        } else {
            delete command;
        }
    }
}

void NotationSelector::dragFine(int x, int y, bool final)
{
    NOTATION_DEBUG << "NotationSelector::drag " << x << ", " << y << endl;

    if (!m_clickedElement || !m_selectedStaff)
        return ;

    EventSelection *selection = m_nParentView->getCurrentSelection();
    if (!selection)
        selection = new EventSelection(m_selectedStaff->getSegment());
    if (!selection->contains(m_clickedElement->event()))
        selection->addEvent(m_clickedElement->event());
    m_nParentView->setCurrentSelection(selection);

    // Fine drag modifies the DISPLACED_X and DISPLACED_Y properties on
    // each event.  The modifications have to be relative to the previous
    // values of these properties, not to zero, so for each event we need
    // to store the previous value at the time the drag starts.

    static PropertyName xProperty("temporary-displaced-x");
    static PropertyName yProperty("temporary-displaced-y");

    if (!m_startedFineDrag) {
        // back up original properties

        for (EventSelection::eventcontainer::iterator i =
                    selection->getSegmentEvents().begin();
                i != selection->getSegmentEvents().end(); ++i) {
            long prevX = 0, prevY = 0;
            (*i)->get
            <Int>(DISPLACED_X, prevX);
            (*i)->get
            <Int>(DISPLACED_Y, prevY);
            (*i)->setMaybe<Int>(xProperty, prevX);
            (*i)->setMaybe<Int>(yProperty, prevY);
        }

        m_startedFineDrag = true;
    }

    // We want the displacements in 1/1000ths of a staff space

    double dx = x - m_selectionRect->x();
    double dy = y - m_selectionRect->y();

    double noteBodyWidth = m_nParentView->getNotePixmapFactory()->getNoteBodyWidth();
    double lineSpacing = m_nParentView->getNotePixmapFactory()->getLineSpacing();
    dx = (1000.0 * dx) / noteBodyWidth;
    dy = (1000.0 * dy) / lineSpacing;

    if (final) {

        // reset original values (and remove backup values) before
        // applying command

        for (EventSelection::eventcontainer::iterator i =
                    selection->getSegmentEvents().begin();
                i != selection->getSegmentEvents().end(); ++i) {
            long prevX = 0, prevY = 0;
            (*i)->get
            <Int>(xProperty, prevX);
            (*i)->get
            <Int>(yProperty, prevY);
            (*i)->setMaybe<Int>(DISPLACED_X, prevX);
            (*i)->setMaybe<Int>(DISPLACED_Y, prevY);
            (*i)->unset(xProperty);
            (*i)->unset(yProperty);
        }

        IncrementDisplacementsCommand *command = new IncrementDisplacementsCommand
                (*selection, long(dx), long(dy));
        m_nParentView->addCommandToHistory(command);

    } else {

        timeT startTime = 0, endTime = 0;

        for (EventSelection::eventcontainer::iterator i =
                    selection->getSegmentEvents().begin();
                i != selection->getSegmentEvents().end(); ++i) {
            long prevX = 0, prevY = 0;
            (*i)->get
            <Int>(xProperty, prevX);
            (*i)->get
            <Int>(yProperty, prevY);
            (*i)->setMaybe<Int>(DISPLACED_X, prevX + long(dx));
            (*i)->setMaybe<Int>(DISPLACED_Y, prevY + long(dy));
            if (i == selection->getSegmentEvents().begin()) {
                startTime = (*i)->getAbsoluteTime();
            }
            endTime = (*i)->getAbsoluteTime() + (*i)->getDuration();
        }

        if (startTime == endTime)
            ++endTime;
        selection->getSegment().updateRefreshStatuses(startTime, endTime);
        m_nParentView->update();
    }
}

void NotationSelector::ready()
{
    m_selectionRect = new QCanvasRectangle(m_nParentView->canvas());

    m_selectionRect->hide();
    m_selectionRect->setPen(GUIPalette::getColour(GUIPalette::SelectionRectangle));

    m_nParentView->setCanvasCursor(Qt::arrowCursor);
    m_nParentView->setHeightTracking(false);
}

void NotationSelector::stow()
{
    delete m_selectionRect;
    m_selectionRect = 0;
    m_nParentView->canvas()->update();
}

void NotationSelector::slotHideSelection()
{
    if (!m_selectionRect)
        return ;
    m_selectionRect->hide();
    m_selectionRect->setSize(0, 0);
    m_nParentView->canvas()->update();
}

void NotationSelector::slotInsertSelected()
{
    m_nParentView->slotLastNoteAction();
}

void NotationSelector::slotEraseSelected()
{
    m_parentView->actionCollection()->action("erase")->activate();
}

void NotationSelector::slotCollapseRestsHard()
{
    m_parentView->actionCollection()->action("collapse_rests_aggressively")->activate();
}

void NotationSelector::slotRespellFlat()
{
    m_parentView->actionCollection()->action("respell_flat")->activate();
}

void NotationSelector::slotRespellSharp()
{
    m_parentView->actionCollection()->action("respell_sharp")->activate();
}

void NotationSelector::slotRespellNatural()
{
    m_parentView->actionCollection()->action("respell_natural")->activate();
}

void NotationSelector::slotCollapseNotes()
{
    m_parentView->actionCollection()->action("collapse_notes")->activate();
}

void NotationSelector::slotInterpret()
{
    m_parentView->actionCollection()->action("interpret")->activate();
}

void NotationSelector::slotMakeInvisible()
{
    m_parentView->actionCollection()->action("make_invisible")->activate();
}

void NotationSelector::slotMakeVisible()
{
    m_parentView->actionCollection()->action("make_visible")->activate();
}

void NotationSelector::setViewCurrentSelection(bool preview)
{
    EventSelection *selection = getSelection();

    if (m_selectionToMerge) {
        if (selection &&
                m_selectionToMerge->getSegment() == selection->getSegment()) {
            selection->addFromSelection(m_selectionToMerge);
        } else {
            return ;
        }
    }

    m_nParentView->setCurrentSelection(selection, preview, true);
}

NotationStaff *
NotationSelector::getStaffForElement(NotationElement *elt)
{
    for (int i = 0; i < m_nParentView->getStaffCount(); ++i) {
        NotationStaff *staff = m_nParentView->getNotationStaff(i);
        if (staff->getSegment().findSingle(elt->event()) !=
                staff->getSegment().end())
            return staff;
    }
    return 0;
}

EventSelection* NotationSelector::getSelection()
{
    // If selection rect is not visible or too small,
    // return 0
    //
    if (!m_selectionRect->visible()) return 0;

    //    NOTATION_DEBUG << "Selection x,y: " << m_selectionRect->x() << ","
    //                         << m_selectionRect->y() << "; w,h: " << m_selectionRect->width() << "," << m_selectionRect->height() << endl;

    if (m_selectionRect->width()  > -3 &&
        m_selectionRect->width()  <  3 &&
        m_selectionRect->height() > -3 &&
        m_selectionRect->height() <  3) return 0;

    QCanvasItemList itemList = m_selectionRect->collisions(false);
    QCanvasItemList::Iterator it;

    QRect rect = m_selectionRect->rect().normalize();
    QCanvasNotationSprite *sprite = 0;

    if (!m_selectedStaff) {

        // Scan the list of collisions, looking for a valid notation
    // element; if we find one, initialise m_selectedStaff from it.
    // If we don't find one, we have no selection.  This is a little
    // inefficient but we only do it for the first event in the
    // selection.

    for (it = itemList.begin(); it != itemList.end(); ++it) {
        
        if ((sprite = dynamic_cast<QCanvasNotationSprite*>(*it))) {

        NotationElement &el = sprite->getNotationElement();

        NotationStaff *staff = getStaffForElement(&el);
        if (!staff) continue;
        
        int x = (int)(*it)->x();
        bool shifted = false;
        int nbw = staff->getNotePixmapFactory(false).getNoteBodyWidth();

        
        // #957364 (Notation: Hard to select upper note in
        // chords of seconds) -- adjust x-coord for shifted
        // note head
        if (el.event()->get<Rosegarden::Bool>
            (staff->getProperties().NOTE_HEAD_SHIFTED, shifted) && shifted) {
            x += nbw;
        }

        if (!rect.contains(x, int((*it)->y()), true)) {
            // #988217 (Notation: Special column of pixels
            // prevents sweep selection) -- for notes, test
            // again with centred x-coord
            if (!el.isNote() || !rect.contains(x + nbw/2, int((*it)->y()), true)) {
            continue;
            }
        }
            
        m_selectedStaff = staff;
        break;
        }
    }
    }

    if (!m_selectedStaff) return 0;
    Segment& originalSegment = m_selectedStaff->getSegment();

    // If we selected the whole staff, force that to happen explicitly
    // rather than relying on collisions with the rectangle -- because
    // events way off the currently visible area might not even have
    // been drawn yet, and so will not appear in the collision list.
    // (We did still need the collision list to determine which staff
    // to use though.)
    
    if (m_wholeStaffSelectionComplete) {
    EventSelection *selection = new EventSelection(originalSegment,
                               originalSegment.getStartTime(),
                               originalSegment.getEndMarkerTime());
    return selection;
    }
    
    EventSelection* selection = new EventSelection(originalSegment);

    for (it = itemList.begin(); it != itemList.end(); ++it) {

        if ((sprite = dynamic_cast<QCanvasNotationSprite*>(*it))) {

        NotationElement &el = sprite->getNotationElement();
        
        int x = (int)(*it)->x();
        bool shifted = false;
        int nbw = m_selectedStaff->getNotePixmapFactory(false).getNoteBodyWidth();

        // #957364 (Notation: Hard to select upper note in chords
        // of seconds) -- adjust x-coord for shifted note head
        if (el.event()->get<Rosegarden::Bool>
        (m_selectedStaff->getProperties().NOTE_HEAD_SHIFTED, shifted) && shifted) {
        x += nbw;
        }

            // check if the element's rect
            // is actually included in the selection rect.
            //
            if (!rect.contains(x, int((*it)->y()), true))  {
        // #988217 (Notation: Special column of pixels
        // prevents sweep selection) -- for notes, test again
        // with centred x-coord
        if (!el.isNote() || !rect.contains(x + nbw/2, int((*it)->y()), true)) {
            continue;
        }
        }
            
        // must be in the same segment as we first started on,
        // we can't select events across multiple segments
        if (selection->getSegment().findSingle(el.event()) !=
        selection->getSegment().end()) {
        selection->addEvent(el.event());
        }
        }
    }

    if (selection->getAddedEvents() > 0) {
    return selection;
    } else {
    delete selection;
    return 0;
    }
}

const QString NotationSelector::ToolName = "notationselector";

}
#include "NotationSelector.moc"