matrixselector.cpp

LINUX下的混音软件

    	QTimer::singleShot(QApplication::doubleClickInterval(), this,
    			   SLOT(slotClickTimeout()));
        } */
}

void MatrixSelector::handleMouseTripleClick(timeT t,
        int height,
        int staffNo,
        QMouseEvent *ev,
        ViewElement *element)
{
    if (!m_justSelectedBar)
        return ;
    m_justSelectedBar = false;

    MatrixStaff *staff = m_mParentView->getStaff(staffNo);
    if (!staff)
        return ;

    if (m_clickedElement) {

        // should be safe, as we've already set m_justSelectedBar false
        handleLeftButtonPress(t, height, staffNo, ev, element);
        return ;

    } else {

        m_selectionRect->setX(staff->getX());
        m_selectionRect->setY(staff->getY());
        m_selectionRect->setSize(int(staff->getTotalWidth()) - 1,
                                 staff->getTotalHeight() - 1);

        m_selectionRect->show();
        m_updateRect = false;
    }
}

int MatrixSelector::handleMouseMove(timeT time, int height,
                                    QMouseEvent *e)
{
    QPoint p = m_mParentView->inverseMapPoint(e->pos());

    if (m_dispatchTool) {
        return m_dispatchTool->handleMouseMove(time, height, e);
    }


    if (!m_updateRect) {
        setContextHelpFor(e->pos(), 
                          getSnapGrid().getSnapSetting() == SnapGrid::NoSnap);
        return RosegardenCanvasView::NoFollow;
    } else {
        clearContextHelp();
    }

    int w = int(p.x() - m_selectionRect->x());
    int h = int(p.y() - m_selectionRect->y());

    // Qt rectangle dimensions appear to be 1-based
    if (w > 0)
        ++w;
    else
        --w;
    if (h > 0)
        ++h;
    else
        --h;

    // Workaround for #930420 Positional error in sweep-selection box boundary
    int wFix = (w > 0) ? 3 : 0;
    int hFix = (h > 0) ? 3 : 0;
    int xFix = (w < 0) ? 3 : 0;
    m_selectionRect->setSize(w - wFix, h - hFix);
    m_selectionRect->setX(m_selectionRect->x() + xFix);
    setViewCurrentSelection();
    m_selectionRect->setSize(w, h);
    m_selectionRect->setX(m_selectionRect->x() - xFix);
    m_mParentView->canvas()->update();

    return RosegardenCanvasView::FollowHorizontal | RosegardenCanvasView::FollowVertical;
}

void MatrixSelector::handleMouseRelease(timeT time, int height, QMouseEvent *e)
{
    MATRIX_DEBUG << "MatrixSelector::handleMouseRelease" << endl;

    if (m_dispatchTool) {
        m_dispatchTool->handleMouseRelease(time, height, e);

        m_dispatchTool->stow();
        ready();

        // don't delete the tool as it's still part of the toolbox
        m_dispatchTool = 0;

        return ;
    }

    m_updateRect = false;

    if (m_clickedElement) {
        m_mParentView->setSingleSelectedEvent(m_currentStaff->getSegment(),
                                              m_clickedElement->event(),
                                              false, true);
        m_mParentView->canvas()->update();
        m_clickedElement = 0;

    } else if (m_selectionRect) {
        setViewCurrentSelection();
        m_selectionRect->hide();
        m_mParentView->canvas()->update();
    }

    // Tell anyone who's interested that the selection has changed
    emit gotSelection();

    setContextHelpFor(e->pos());
}

void MatrixSelector::ready()
{
    if (m_mParentView) {
        m_selectionRect = new QCanvasRectangle(m_mParentView->canvas());
        m_selectionRect->hide();
        m_selectionRect->setPen(QPen(GUIPalette::getColour(GUIPalette::SelectionRectangle), 2));

        m_mParentView->setCanvasCursor(Qt::arrowCursor);
        //m_mParentView->setPositionTracking(false);
    }

    connect(m_parentView->getCanvasView(), SIGNAL(contentsMoving (int, int)),
            this, SLOT(slotMatrixScrolled(int, int)));

    setContextHelp(i18n("Click and drag to select; middle-click and drag to draw new note"));
}

void MatrixSelector::stow()
{
    if (m_selectionRect) {
        delete m_selectionRect;
        m_selectionRect = 0;
        m_mParentView->canvas()->update();
    }

    disconnect(m_parentView->getCanvasView(), SIGNAL(contentsMoving (int, int)),
               this, SLOT(slotMatrixScrolled(int, int)));

}

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

void MatrixSelector::slotMatrixScrolled(int newX, int newY)
{
    if (m_updateRect) {
        int offsetX = newX - m_parentView->getCanvasView()->contentsX();
        int offsetY = newY - m_parentView->getCanvasView()->contentsY();

        int w = int(m_selectionRect->width() + offsetX);
        int h = int(m_selectionRect->height() + offsetY);

        // Qt rectangle dimensions appear to be 1-based
        if (w > 0)
            ++w;
        else
            --w;
        if (h > 0)
            ++h;
        else
            --h;

        m_selectionRect->setSize(w, h);
        setViewCurrentSelection();
        m_mParentView->canvas()->update();
    }
}

void MatrixSelector::setViewCurrentSelection()
{
    EventSelection* selection = getSelection();

    if (m_selectionToMerge && selection &&
        m_selectionToMerge->getSegment() == selection->getSegment()) {
        
        selection->addFromSelection(m_selectionToMerge);
        m_mParentView->setCurrentSelection(selection, true, true);

    } else if (!m_selectionToMerge) {

        m_mParentView->setCurrentSelection(selection, true, true);

    }

}

EventSelection* MatrixSelector::getSelection()
{
    if (!m_selectionRect->visible()) return 0;

    Segment& originalSegment = m_currentStaff->getSegment();
    EventSelection* selection = new EventSelection(originalSegment);

    // get the selections
    //
    QCanvasItemList l = m_selectionRect->collisions(true);

    if (l.count())
    {
        for (QCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it)
        {
            QCanvasItem *item = *it;
            QCanvasMatrixRectangle *matrixRect = 0;

            if ((matrixRect = dynamic_cast<QCanvasMatrixRectangle*>(item)))
            {
                MatrixElement *mE = &matrixRect->getMatrixElement();
                selection->addEvent(mE->event());
            }
        }
    }

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

void MatrixSelector::setContextHelpFor(QPoint p, bool ctrlPressed)
{
    kapp->config()->setGroup(GeneralOptionsConfigGroup);
    if (!kapp->config()->readBoolEntry("toolcontexthelp", true)) return;

    p = m_mParentView->inverseMapPoint(p);

    // same logic as in MatrixCanvasView::contentsMousePressEvent

    QCanvasItemList itemList = m_mParentView->canvas()->collisions(p);
    QCanvasItemList::Iterator it;
    MatrixElement* mel = 0;
    QCanvasItem* activeItem = 0;

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

        QCanvasItem *item = *it;
        QCanvasMatrixRectangle *mRect = 0;

        if (item->active()) {
            break;
        }

        if ((mRect = dynamic_cast<QCanvasMatrixRectangle*>(item))) {
            if (! mRect->rect().contains(p, true)) continue;
            mel = &(mRect->getMatrixElement());
            break;
        }
    }

    if (!mel) {
        setContextHelp(i18n("Click and drag to select; middle-click and drag to draw new note"));

    } else {
        
        // same logic as in handleMouseButtonPress
        
        int x = int(mel->getLayoutX());
        int width = mel->getWidth();
        int resizeStart = int(double(width) * 0.85) + x;

        // max size of 10
        if ((x + width ) - resizeStart > 10)
            resizeStart = x + width - 10;

        EventSelection *s = m_mParentView->getCurrentSelection();

        if (p.x() > resizeStart) {
            if (s && s->getAddedEvents() > 1) {
                setContextHelp(i18n("Click and drag to resize selected notes"));
            } else {
                setContextHelp(i18n("Click and drag to resize note"));
            }
        } else {
            if (s && s->getAddedEvents() > 1) {
                if (!ctrlPressed) {
                    setContextHelp(i18n("Click and drag to move selected notes; hold Ctrl as well to copy"));
                } else {
                    setContextHelp(i18n("Click and drag to copy selected notes"));
                }
            } else {
                if (!ctrlPressed) {
                    setContextHelp(i18n("Click and drag to move note; hold Ctrl as well to copy"));
                } else {
                    setContextHelp(i18n("Click and drag to copy note"));
                }
            }                
        }
    }
}

const QString MatrixSelector::ToolName  = "selector";

}
#include "MatrixSelector.moc"