diff options
Diffstat (limited to 'examples/widgets/widgets/tablet/tabletcanvas.cpp')
| -rw-r--r-- | examples/widgets/widgets/tablet/tabletcanvas.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/examples/widgets/widgets/tablet/tabletcanvas.cpp b/examples/widgets/widgets/tablet/tabletcanvas.cpp index 03e05e42f6..54e8544a3d 100644 --- a/examples/widgets/widgets/tablet/tabletcanvas.cpp +++ b/examples/widgets/widgets/tablet/tabletcanvas.cpp @@ -111,6 +111,7 @@ void TabletCanvas::tabletEvent(QTabletEvent *event) if (!m_deviceDown) { m_deviceDown = true; lastPoint.pos = event->posF(); + lastPoint.pressure = event->pressure(); lastPoint.rotation = event->rotation(); } break; @@ -122,6 +123,7 @@ void TabletCanvas::tabletEvent(QTabletEvent *event) QPainter painter(&m_pixmap); paintPixmap(painter, event); lastPoint.pos = event->posF(); + lastPoint.pressure = event->pressure(); lastPoint.rotation = event->rotation(); } break; @@ -171,11 +173,12 @@ void TabletCanvas::paintPixmap(QPainter &painter, QTabletEvent *event) painter.setPen(Qt::NoPen); painter.setBrush(m_brush); QPolygonF poly; - qreal halfWidth = m_pen.widthF(); + qreal halfWidth = pressureToWidth(lastPoint.pressure); QPointF brushAdjust(qSin(qDegreesToRadians(lastPoint.rotation)) * halfWidth, qCos(qDegreesToRadians(lastPoint.rotation)) * halfWidth); poly << lastPoint.pos + brushAdjust; poly << lastPoint.pos - brushAdjust; + halfWidth = m_pen.widthF(); brushAdjust = QPointF(qSin(qDegreesToRadians(event->rotation())) * halfWidth, qCos(qDegreesToRadians(event->rotation())) * halfWidth); poly << event->posF() - brushAdjust; @@ -215,6 +218,11 @@ void TabletCanvas::paintPixmap(QPainter &painter, QTabletEvent *event) } //! [5] +qreal TabletCanvas::pressureToWidth(qreal pressure) +{ + return pressure * 10 + 1; +} + //! [7] void TabletCanvas::updateBrush(const QTabletEvent *event) { @@ -260,7 +268,7 @@ void TabletCanvas::updateBrush(const QTabletEvent *event) //! [9] //! [10] switch (m_lineWidthValuator) { case PressureValuator: - m_pen.setWidthF(event->pressure() * 10 + 1); + m_pen.setWidthF(pressureToWidth(event->pressure())); break; case TiltValuator: m_pen.setWidthF(maximum(abs(vValue - 127), abs(hValue - 127)) / 12); |