C++ GeometryItem::h方法代码示例

void Geometryval::slotPositionChanged(int pos, bool seek)
{
    if (seek && KdenliveSettings::transitionfollowcursor()) emit seekToPos(pos);
    m_ui.spinPos->setValue(pos);
    m_helper->setValue(pos);
    Mlt::GeometryItem item;
    int error = m_geom->fetch(&item, pos);
    if (error || item.key() == false) {
        // no keyframe under cursor, adjust buttons
        m_ui.buttonAdd->setEnabled(true);
        m_ui.buttonDelete->setEnabled(false);
        m_ui.widget->setEnabled(false);
        m_ui.spinTransp->setEnabled(false);
        m_scaleMenu->setEnabled(false);
        m_alignMenu->setEnabled(false);
    } else {
        m_ui.buttonAdd->setEnabled(false);
        m_ui.buttonDelete->setEnabled(true);
        m_ui.widget->setEnabled(true);
        m_ui.spinTransp->setEnabled(true);
        m_scaleMenu->setEnabled(true);
        m_alignMenu->setEnabled(true);
    }
    m_paramRect->setPos(item.x(), item.y());
    m_paramRect->setRect(0, 0, item.w(), item.h());
    m_ui.spinTransp->setValue(item.mix());
    m_paramRect->setBrush(QColor(255, 0, 0, item.mix()));
}

void Geometryval::setupParam(const QDomElement par, int minFrame, int maxFrame)
{
    QString val = par.attribute("value");
    if (par.attribute("fixed") == "1") {
        m_fixedMode = true;
        buttonPrevious->setHidden(true);
        buttonNext->setHidden(true);
        buttonDelete->setHidden(true);
        buttonAdd->setHidden(true);
        spinTransp->setMaximum(500);
        label_pos->setHidden(true);
        m_helper->setHidden(true);
        m_timePos.setHidden(true);
    }
    if (par.attribute("opacity") == "false") {
        label_opacity->setHidden(true);
        spinTransp->setHidden(true);
    }
    if (m_geom)
        m_geom->parse(val.toUtf8().data(), maxFrame - minFrame, m_profile->width(), m_profile->height());
    else
        m_geom = new Mlt::Geometry(val.toUtf8().data(), maxFrame - minFrame, m_profile->width(), m_profile->height());

    ////qDebug() << " / / UPDATING TRANSITION VALUE: " << m_geom->serialise();
    //read param her and set rect
    if (!m_fixedMode) {
        m_helper->setKeyGeometry(m_geom, maxFrame - minFrame - 1);
        m_helper->update();
        /*QDomDocument doc;
        doc.appendChild(doc.importNode(par, true));
        //qDebug() << "IMPORTED TRANS: " << doc.toString();*/
        if (m_path == NULL) {
            m_path = new QGraphicsPathItem();
            m_path->setPen(QPen(Qt::red));
            m_scene->addItem(m_path);
        }
        updateTransitionPath();
    }
    Mlt::GeometryItem item;

    m_geom->fetch(&item, 0);
    delete m_paramRect;
    m_paramRect = new QGraphicsRectItem(QRectF(0, 0, item.w() * m_dar, item.h()));
    m_paramRect->setPos(item.x() * m_dar, item.y());
    m_paramRect->setZValue(0);
    m_paramRect->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);

    m_paramRect->setPen(QPen(QBrush(QColor(255, 0, 0, 255)), 1.0));
    m_scene->addItem(m_paramRect);
    slotPositionChanged(0, false);
    slotUpdateGeometry();
    if (!m_fixedMode) {
        m_timePos.setRange(0, maxFrame - minFrame - 1);
        connect(&m_timePos, SIGNAL(timeCodeEditingFinished()), this , SLOT(slotPositionChanged()));
    }
    connect(spinTransp, SIGNAL(valueChanged(int)), this , SLOT(slotTransparencyChanged(int)));
}

void Geometryval::updateTransitionPath()
{
    if (m_fixedMode) return;
    Mlt::GeometryItem item;
    int pos = 0;
    int counter = 0;
    QPainterPath path;
    while (true) {
        if (m_geom->next_key(&item, pos) == 1) break;
        pos = item.frame();
        if (counter == 0) {
            path.moveTo(item.x() * m_dar + item.w() * m_dar / 2, item.y() + item.h() / 2);
        } else {
            path.lineTo(item.x() * m_dar + item.w() * m_dar / 2, item.y() + item.h() / 2);
        }
        counter++;
        pos++;
    }
    m_path->setPath(path);
}

void Geometryval::setupParam(const QDomElement& par, int minFrame, int maxFrame)
{
    m_param = par;
    QString val = par.attribute("value");
    if (par.attribute("fixed") == "1") {
        m_fixedMode = true;
        m_ui.buttonPrevious->setHidden(true);
        m_ui.buttonNext->setHidden(true);
        m_ui.buttonDelete->setHidden(true);
        m_ui.buttonAdd->setHidden(true);
        m_ui.spinTransp->setMaximum(500);
        m_ui.label_pos->setHidden(true);
        m_helper->setHidden(true);
        m_ui.spinPos->setHidden(true);
    }
    char *tmp = (char *) qstrdup(val.toUtf8().data());
    if (m_geom) m_geom->parse(tmp, maxFrame - minFrame, m_profile.width, m_profile.height);
    else m_geom = new Mlt::Geometry(tmp, maxFrame - minFrame, m_profile.width, m_profile.height);
    delete[] tmp;

    //kDebug() << " / / UPDATING TRANSITION VALUE: " << m_geom->serialise();
    //read param her and set rect
    if (!m_fixedMode) {
        m_helper->setKeyGeometry(m_geom, maxFrame - minFrame - 1);
        m_helper->update();
        /*QDomDocument doc;
        doc.appendChild(doc.importNode(par, true));
        kDebug() << "IMPORTED TRANS: " << doc.toString();*/
        m_ui.spinPos->setMaximum(maxFrame - minFrame - 1);
        if (m_path == NULL) {
            m_path = new QGraphicsPathItem();
            m_path->setPen(QPen(Qt::red));
            m_scene->addItem(m_path);
        }
        updateTransitionPath();
    }
    Mlt::GeometryItem item;

    m_geom->fetch(&item, 0);
    delete m_paramRect;
    m_paramRect = new QGraphicsRectItem(QRectF(0, 0, item.w(), item.h()));
    m_paramRect->setPos(item.x(), item.y());
    m_paramRect->setZValue(0);

    m_paramRect->setPen(QPen(QBrush(QColor(255, 0, 0, 255)), 1.0));
    m_scene->addItem(m_paramRect);
    slotPositionChanged(0, false);
    if (!m_fixedMode) {
        connect(m_ui.spinPos, SIGNAL(valueChanged(int)), this , SLOT(slotPositionChanged(int)));
    }

// virtual
void KeyframeHelper::mousePressEvent(QMouseEvent * event)
{
    m_hoverKeyframe = -1;
    if (event->button() != Qt::LeftButton) {
        QWidget::mousePressEvent(event);
        return;
    }
    int xPos = event->x() - margin;
    int headOffset = m_lineHeight / 1.5;
    if (m_geom != NULL && (event->y() <= headOffset)) {
        // check if we want to move a keyframe
        int mousePos = qMax((int)(xPos / m_scale), 0) + m_offset;
        Mlt::GeometryItem item;
        if (m_geom->next_key(&item, mousePos) == 0) {
            if (qAbs((item.frame() - m_offset)* m_scale - xPos) < headOffset) {
                m_movingItem.x(item.x());
                m_movingItem.y(item.y());
                m_movingItem.w(item.w());
                m_movingItem.h(item.h());
                m_movingItem.mix(item.mix());
                m_movingItem.frame(item.frame());

                while (!m_extraMovingItems.isEmpty()) {
                    Mlt::GeometryItem *gitem = m_extraMovingItems.takeFirst();
                    if (gitem) delete gitem;
                }
                for (int i = 0; i < m_extraGeometries.count(); ++i) {
                    if (m_extraGeometries.at(i)->next_key(item, mousePos) == 0) {
                        Mlt::GeometryItem *item2 = new Mlt::GeometryItem();
                        item2->x(item.x());
                        item2->frame(item.frame());
                        m_extraMovingItems.append(item2);
                    } else {
                        m_extraMovingItems.append(NULL);
                    }
                }
                m_dragStart = event->pos();
                return;
            }
        }
    }
    int seekRequest = xPos / m_scale;
    if (seekRequest != m_position) {
        m_seekPosition = seekRequest;
        emit requestSeek(m_seekPosition);
        update();
    }
}

void Geometryval::slotUpdateTransitionProperties()
{
    int pos = m_timePos.getValue();
    Mlt::GeometryItem item;
    int error = m_geom->next_key(&item, pos);
    if (error || item.frame() != pos) {
        // no keyframe under cursor
        return;
    }
    QRectF r = m_paramRect->rect().normalized();
    QPointF rectpos = m_paramRect->pos();
    item.x(rectpos.x() / m_dar);
    item.y(rectpos.y());
    item.w(r.width() / m_dar);
    item.h(r.height());
    m_geom->insert(item);
    updateTransitionPath();
    emit parameterChanged();
}

void Geometryval::slotAddFrame()
{
    int pos = m_ui.spinPos->value();
    Mlt::GeometryItem item;
    item.frame(pos);
    item.x(m_paramRect->pos().x());
    item.y(m_paramRect->pos().y());
    item.w(m_paramRect->rect().width());
    item.h(m_paramRect->rect().height());
    item.mix(m_ui.spinTransp->value());
    m_geom->insert(item);
    m_ui.buttonAdd->setEnabled(false);
    m_ui.buttonDelete->setEnabled(true);
    m_ui.widget->setEnabled(true);
    m_ui.spinTransp->setEnabled(true);
    m_scaleMenu->setEnabled(true);
    m_alignMenu->setEnabled(true);
    m_helper->update();
    emit parameterChanged();
}

void Geometryval::slotAddFrame(int pos)
{
    int frame = m_timePos.getValue();
    if (pos == -1) pos = frame;
    Mlt::GeometryItem item;
    item.frame(pos);
    QRectF r = m_paramRect->rect().normalized();
    QPointF rectpos = m_paramRect->pos();
    item.x(rectpos.x() / m_dar);
    item.y(rectpos.y());
    item.w(r.width() / m_dar);
    item.h(r.height());
    item.mix(spinTransp->value());
    m_geom->insert(item);
    buttonAdd->setEnabled(false);
    buttonDelete->setEnabled(true);
    widget->setEnabled(true);
    spinTransp->setEnabled(true);
    frameOptions->setEnabled(true);
    m_reset->setEnabled(true);
    m_helper->update();
    emit parameterChanged();
}

void Geometryval::slotPositionChanged(int pos, bool seek)
{
    if (pos == -1) {
        pos = m_timePos.getValue();
    }
    if (seek && KdenliveSettings::transitionfollowcursor()) emit seekToPos(pos + m_startPoint);
    m_timePos.setValue(pos);
    //spinPos->setValue(pos);
    m_helper->blockSignals(true);
    m_helper->setValue(pos);
    m_helper->blockSignals(false);
    Mlt::GeometryItem item;
    int error = m_geom->fetch(&item, pos);
    if (error || item.key() == false) {
        // no keyframe under cursor, adjust buttons
        buttonAdd->setEnabled(true);
        buttonDelete->setEnabled(false);
        widget->setEnabled(false);
        spinTransp->setEnabled(false);
        frameOptions->setEnabled(false);
        m_reset->setEnabled(false);
    } else {
        buttonAdd->setEnabled(false);
        buttonDelete->setEnabled(true);
        widget->setEnabled(true);
        spinTransp->setEnabled(true);
        frameOptions->setEnabled(true);
        m_reset->setEnabled(true);
    }

    m_paramRect->setPos(item.x() * m_dar, item.y());
    m_paramRect->setRect(0, 0, item.w() * m_dar, item.h());
    spinTransp->setValue(item.mix());
    m_paramRect->setBrush(QColor(255, 0, 0, item.mix()));
    slotUpdateGeometry();
}