Qt SVG renderer

[Maksim Orlovich]

On Thursday 31 July 2008 15:16:12 Richard Dale wrote:
> On Thursday 31 July 2008 19:31:46 Matthew Woehlke wrote:
> > Thiago Macieira wrote:
> > > On Thursday 31 July 2008 13:54:22 Rafael Fernández López wrote:
> > >> Matthew Woehlke wrote:
> > >>> @ereslibre:
> > >>> It would be REALLY helpful if you could somehow provide the
> > >>> mis-rendering svg's as well (link to websvn is probably ok); I'm sure
> > >>> this would be a tremendous help to the Qt folk.
> > >>
> > >> Hmm, yes... let's see if I can do it ASAP.
> > >
> > > There's no rush for us.
> >
> > Well *I'm* still curious. So I dug out where in svn the .svg's are...
> > and at least for media-flash-memory-stick, there is indeed *not* junk in
> > the file... all the background garbage is indeed the fault of the
> > renderer, not the svg. (I wonder if Ariya might be onto something, if
> > maybe something is being reused without being cleared, rather than a Qt
> > problem. I must admit, it's hard to imagine how Qt would manage to
> > render bunches of other icons behind the 'right' one.)
>
> I think the images were generated with a QtRuby program as I helped ruphy
> get it working on the #plasma irc channel. Sorry this has only just occured
> to me, although I've been reading the thread.
>
> It renders all the "*.svg"s in a directory to .pngs. However, if I've just
> run it with just a single svg at a time, and I get different results. So I
> suspect this a more likely a bug in QtRuby than Qt itself.
>
> Here is the QtRuby program:
>
> require 'Qt4'
>
> class Renderer
>   def initialize
>     @renderer = Qt::SvgRenderer.new
>   end
>
>   def render(file)
>     pic = Qt::Image.new(256, 256, Qt::Image::Format_ARGB32_Premultiplied)

You meed to call fill on the image to initialize it here.