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Thread: QwtPlotRenderer for multiple QwtPlot

  1. #1
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    Default QwtPlotRenderer for multiple QwtPlot

    Hello!

    I'ld like to export to a pdf [using QwtPlotRender] various QwtPlot, not just one. How could I do that?

    For now what I do is:

    Qt Code:
    1. QwtPlotRenderer renderer;
    2. renderer.exportTo( graphCandle, "test.pdf" );
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    and I want to export other two QwtPlot besides graphCandle in the same .pdf.

    Is there a way?

    Thanks,

    Momergil

  2. #2
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    Default Re: QwtPlotRenderer for multiple QwtPlot

    Find your own layout ( = bounding rectangles in paint device coordinates ) where you want to have your plots and use

    Qt Code:
    1. void QwtPlotRenderer::render(QwtPlot *, QPainter *, const QRectF &rect) const
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    renderTo and export() are only convenience APIs calculating a rectangle from the paint device metrics and calling in the end render(). Have a look at the implementation of these methods if you are unsure how to setup a QPainter to render a PDF document.

    Uwe

  3. The following user says thank you to Uwe for this useful post:

    Momergil (18th January 2013)

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