[Interest] I know I'm just being stupid here...

Tony Rietwyk tony at rightsoft.com.au
Thu Jan 24 04:49:55 CET 2019


Hi Bob,

I think you'll need to increase the size of the document - maybe the 
paintContext is being clipped to the document size?

Hope that helps,

Tony


On 24/01/2019 2:18 pm, Bob Hood wrote:
> I'm trying to render rotated rich text, and it just keeps clipping on 
> me.  I can't seem to find the magic combination that will expand the 
> clipping region.
>
> The simplest paintEvent():
>
>     void VerticalLabel::paintEvent(QPaintEvent*)
>     {
>         QPainter painter(this);
>
>         painter.rotate(-20);
>
>         QTextDocument td;
>         td.setHtml(text());
>         td.drawContents(&painter);
>     }
>
> Slightly more involved paintEvent():
>
>     void VerticalLabel::paintEvent(QPaintEvent*)
>     {
>         QPainter painter(this);
>
>         painter.rotate(-20);
>
>         QTextDocument td;
>         td.setHtml(text());
>         QAbstractTextDocumentLayout::PaintContext ctx;
>         ctx.clip = QRectF(0, 0, 100, 400);
>         td.documentLayout()->draw(&painter, ctx);
>     }
>
> In both cases, I'm going from this without the rotation:
>
>
>
> to this with it:
>
>
>
>
> Question:  How do I alter this clipping so the text is visible when it 
> is vertical?  Setting the PaintContext.clip doesn't appear to have any 
> impact no matter what values I put in it, and Google doesn't have any 
> answers, as far as I could find.
>
>
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