[Qt-interest] text dimensions ?
Martin Schröer
gordon at gordonswelt.de
Tue Mar 17 16:24:42 CET 2009
Well, okey. I thought of this approach myself but discarded it for being
... dirty.
No better way of achieving it ?
Anyway, before i forget:
Thank you Jesus, for your very quick reply !
Martin
Jesús Fernández schrieb:
> So, you need to try diferent dimesions and stop at the maximum size:
>
> /For example/
> void GraphicsShapeItem::resized()
> {
> QRectF r=boundingRect();
> QFont font;
> QFontMetrics fontMetrics;
> QString text=tr("Sample text");
> int height, width;
>
> do {
> font.setPointSize(font.pointSize()+1);
> fontMetrics=QFontMetrics(font);
> height=fontMetrics.height();
> width=fontMetrics.width(text);
> }while(r.width>width && r.height>height);
> }
>
> On Tue, Mar 17, 2009 at 4:06 PM, Martin Schröer <gordon at gordonswelt.de
> <mailto:gordon at gordonswelt.de>> wrote:
>
> Yes, this is nice - but only for the 'to' direction.
> What if i have a rectangle in which i want to render a text given ?
> How to find out what font size to use ?
>
>
> Martin
>
> Jesús Fernández schrieb:
> > Read this:
> >
> > http://doc.trolltech.com/4.5/qfontmetrics.html
> >
> > Regards
> >
> > On Tue, Mar 17, 2009 at 3:50 PM, Martin Schröer
> <gordon at gordonswelt.de <mailto:gordon at gordonswelt.de>
> > <mailto:gordon at gordonswelt.de <mailto:gordon at gordonswelt.de>>>
> wrote:
> >
> > Hi list.
> >
> > I have to drawText on a GraphicsScene.
> > Does anybody know a good practice to do this, considering the
> > [dynamic]
> > size of the text given to be drawn ?
> > I want to have the text fill a certain area in original
> scale, plus
> > having it resize along with the whole scene,
> > so e.g. it always fills the same region within the scene.
> >
> > Like giving a text 'rate this scene 'scary'', being always shown
> > in the
> > bottom right corner of the scene
> > within a region that is scene.width() /4, scene.height() /4.
> >
> > I don't have troubles getting the size of a bounding rect
> for doing
> > that, what gives me headaches is
> > how to find out which size the text has or has to have,
> still being
> > drawn in aspect when the scene
> > dimensions changes.
> >
> > Any help, as always, highly appreciated.
> >
> > Martin
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