[Qt-interest] QFont size when printing/creating PDF

[Vinicius Jarina]

Anyone?

Please

On Mon, Jun 28, 2010 at 2:36 AM, Vinicius Jarina
<viniciusjarina at gmail.com>wrote:

> Hi
>
> I am writing a application that should print some output or create a PDF
> with this same output, and the PDF should be exactly in the same metrics of
> the printed output.
>
> This is already done, scaling any output scaling by 72dpi, like this
>
> QSizeF dpiSize(dev->logicalDpiX(),dev->logicalDpiY());
>
> double dScaleX = dpiSize.width() / 72.0;
> double dScaleY = dpiSize.height()/ 72.0;
>
> painter.scale(dScaleX, dScaleY);
>
> But, when I try to paint a text. Using any QFont the size in the printer
> and in the PDF dont match :(
>
> Like.
>
> QFont arialFont("Arial", 36, QFont::Normal);
>
> pen.setColor(Qt::black);
> pen.setWidth(2);
>
> painter->setPen(pen);
> // Primitive output match the same size in printer and in pdf
> painter->drawRect(QRect(100,100,100,100));
> painter->drawEllipse(QRect(500,600,100,200));
> painter->drawEllipse(QRect(300,500,300,200));
> // the text output dont
> painter->setFont(serifFont);
> painter->drawText(QPoint(10,400),  "The quick brown");
>
> Am I doing something wrong? scale doesn't work for fonts? should I create
> QFont using the QPaintDevice parameter?
>
> Thanks
>
> Vinicius Jarina.
>
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