Pixelated QwtPlotTextLabel and QwtPlotRenderer

[Seamus]

Come on: drawing to a QImage should also be done without using the cache for a painter with scaling ( see the code you have posted ! ) and all your code should be obsolete.

How can you tell if the QPainter is scaling when QPainter::transform().isScaling() always return false.

void PlotTextLabel::draw( QPainter *painter,
                            const QwtScaleMap &xMap, const QwtScaleMap &yMap,
                            const QRectF &canvasRect ) const
{
    qDebug() << __FUNCTION__ << painter->paintEngine()->type() << painter->transform().isScaling();
    QwtPlotTextLabel::draw(painter, xMap, yMap, canvasRect);
}

void PlotTextLabel::draw( QPainter *painter,
                            const QwtScaleMap &xMap, const QwtScaleMap &yMap,
                            const QRectF &canvasRect ) const
{
    qDebug() << __FUNCTION__ << painter->paintEngine()->type() << painter->transform().isScaling();
    QwtPlotTextLabel::draw(painter, xMap, yMap, canvasRect);
}

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