Battery applet and KIcon
Marco Martin
notmart at gmail.com
Mon Feb 15 20:00:09 CET 2010
On Monday 15 February 2010, Zack Rusin wrote:
> On Sunday 14 February 2010 18:24:51 Marco Martin wrote:
> > > QRectF makeUniform(const QRect &orig,
> > >
> > > const QRect &dst)
> >
> > oring and dist shouldn't them be QRectF in the signature?
>
> only if we care about it being anywhere close to correct. definitely should
> :)
>
> > ok, let's see if i got what this does :)
> > if an element has the geometry(10.5, 10.5, 30,30), we want to render it
> > at (0,0,30,30) we'll render at (0.5, 0.5, 29.5, 29.5) making aligned
> > the edge
> >
> > in the oringin that would otherwise have been rendered between two
> > pixels
> >
> > but don't quite understand why the size gets changed?
>
> it shouldn't. i should've used moveCenter or such. the size should stay the
> same, we just want to align it. basically just do the best we can within
> the size that we were given.
> all in all the size could and possibly should be changed by the offset
> itself, but that could be fixed later.
>
> so as you mentioned, it's easiest to see within identity transform:
> orig = QRectF(0.5, 0.5, 32, 32)
> dst = QRectF(10, 10, 32, 32)
> hence transform = identity, offset = 0.5 and so
> true dst = QRectF(10.5, 10.5, 32, 32);
>
> with scaling things get hairy, there are two possibilities here they are:
> true dst = QRectF(
> offset * div_w + dst.x(),
> offset * div_h + dst.y(),
> dst.width(), dst.height());
> and
> true dst = QRectF(
> offset + offset * div_w + dst.x(),
> offset + offset * div_h + dst.y(),
> dst.width(), dst.height());
>
> (btw, in res.adjust in the last email instead of "offset / div" it should
> say offset * div).
this patch -should- do it...
the difference in rendering is very minimal (as it should be) but seems the
battery is sliiightly more detailed (in the right one is visible a little
reflection effect that in the left one is blurred away)
Cheers,
Marco Martin
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