QPainter::rotate and Qwt problems

[alex_sh]

Hello,

I'm porting a QPainter-based code (written in absolute coordinates) to Qwt plot item. Normally the porting consists of transforming the coordinates using QwtScaleMap::transform() and using QwtPainter's static draw*() functions. But the original code uses QPainter::rotate() which really screws it all up and gives some really strange (and inexplicable) results.

For example,

for(int i=0; i<50; i++) {
    painter->save();
    painter->rotate(-90 - i*7.2);
    QwtPainter::drawText(painter, QwtScaleMap::transform(xMap, yMap, QRectF(-14,-595,100,100)),
        Qt::AlignLeft | Qt::AlignBottom, QString::number);
    painter->restore();
}

for(int i=0; i<50; i++) {
    painter->save();
    painter->rotate(-90 - i*7.2);
    QwtPainter::drawText(painter, QwtScaleMap::transform(xMap, yMap, QRectF(-14,-595,100,100)),
        Qt::AlignLeft | Qt::AlignBottom, QString::number);
    painter->restore();
}

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Basically, what it does (in the original) is that it draw the numbers radially around a circle (think numbers around a dial).

I can use a separate QTransform object, rotate it and map that rectangle to it, giving me the text approximately where I want it. But, it's still off enough to be bad, and the text itself is not rotated (and I really need that).

Is there a way to make the painter rotation work with Qwt? Or maybe draw the rotated text some other way?

Thanks in advance!
Alexander