Method routeMouseDrawingEvent

part/presentationwidget.cpp:1337–1412

}

QRect PresentationWidget::routeMouseDrawingEvent(QMouseEvent *e)
{
    if (m_frameIndex == -1) { // Can't draw on the summary page
        return QRect();
    }

    const QRect &geom = m_frames[m_frameIndex]->geometry;
    const Okular::Page *page = m_frames[m_frameIndex]->page;

    AnnotatorEngine::EventType eventType;
    AnnotatorEngine::Button button;
    AnnotatorEngine::Modifiers modifiers;

    // figure out the event type and button
    AnnotatorEngine::decodeEvent(e, &eventType, &button);

    static bool hasclicked = false;
    if (eventType == AnnotatorEngine::Press) {
        hasclicked = true;
    }

    QPointF mousePos = e->position();
    double nX = (mousePos.x() - (double)geom.left()) / (double)geom.width();
    double nY = (mousePos.y() - (double)geom.top()) / (double)geom.height();
    QRect ret;
    bool isInside = nX >= 0 && nX < 1 && nY >= 0 && nY < 1;

    if (hasclicked && !isInside) {
        // Fake a move to the last border pos
        nX = qBound(0., nX, 1.);
        nY = qBound(0., nY, 1.);
        m_drawingEngine->event(AnnotatorEngine::Move, button, modifiers, nX, nY, geom.width(), geom.height(), page);

        // Fake a release in the following lines
        eventType = AnnotatorEngine::Release;
        isInside = true;
    } else if (!hasclicked && isInside) {
        // we're coming from the outside, pretend we started clicking at the closest border
        if (nX < (1 - nX) && nX < nY && nX < (1 - nY)) {
            nX = 0;
        } else if (nY < (1 - nY) && nY < nX && nY < (1 - nX)) {
            nY = 0;
        } else if ((1 - nX) < nX && (1 - nX) < nY && (1 - nX) < (1 - nY)) {
            nX = 1;
        } else {
            nY = 1;
        }

        hasclicked = true;
        eventType = AnnotatorEngine::Press;
    }

    if (hasclicked && isInside) {
        ret = m_drawingEngine->event(eventType, button, modifiers, nX, nY, geom.width(), geom.height(), page);
    }

    if (eventType == AnnotatorEngine::Release) {
        hasclicked = false;