[RQt-devel] qdrawText() in Qt 4.7.0

[Michael Lawrence]

On Tue, Oct 19, 2010 at 8:43 PM, Yihui Xie <xieyihui at gmail.com> wrote:

> After struggling with this problem for another few hours, I finally
> figured out the reason:
>
> http://github.com/ggobi/qtpaint/commit/dba9fdefdab125e3013e69f582b3a03825080e5a
> There is something wrong in this commit. The texts can be correctly
> drawn with earlier qtpaint revisions.
>
> Fortunately it is not a compatibility issue...
>
>
You shouldn't have spent so much time on it. Please give me at least a day
or so to take care of these. I committed what I hope to be a fix. Still
working on the rotation.

Michael


> Regards,
> Yihui
> --
> Yihui Xie <xieyihui at gmail.com>
> Phone: 515-294-2465 Web: http://yihui.name
> Department of Statistics, Iowa State University
> 2215 Snedecor Hall, Ames, IA
>
>
>
> On Tue, Oct 19, 2010 at 1:36 PM, Yihui Xie <xieyihui at gmail.com> wrote:
> > Here comes a minimal example (with screenshots attached):
> >
> > library(qtpaint)
> > s <- qscene()
> > test_layer <- qlayer(s, function(layer, painter) {
> >    qlineWidth(painter) = 2
> >    qdrawRect(painter, 10, 10, 90, 90, stroke = 'blue')
> >    ## origin of y is incorrect (at the top of the canvas; should be
> > at the center)
> >    for(y in c(-50,-30,0,30,50)) {
> >        qdrawText(painter, paste('y =',y), 50,y)
> >    }
> >    ## but x is correct
> >    for(x in c(0,30,50,80,100)) {
> >        qdrawText(painter, paste('x =',x), x, -60)
> >    }
> > }, limits=qrect(0,0,100,100))
> > qplotView(s)
> >
> >
> > Regards,
> > Yihui
> > --
> > Yihui Xie <xieyihui at gmail.com>
> > Phone: 515-294-2465 Web: http://yihui.name
> > Department of Statistics, Iowa State University
> > 2215 Snedecor Hall, Ames, IA
> >
> >
> >
> > On Tue, Oct 19, 2010 at 7:55 AM, Michael Lawrence
> > <lawrence.michael at gene.com> wrote:
> >> Moved this over to the more appropriate qtinterfaces-devel list. I am
> >> installing Qt 4.7 now and will work towards compatibility. For this
> >> particular issue, it would be helpful if you could send a simple
> >> reproducible example.
> >>
> >> Thanks,
> >> Michael
> >>
> >> On Mon, Oct 18, 2010 at 8:50 AM, Yihui Xie <xieyihui at gmail.com> wrote:
> >>>
> >>> Hi (Michael),
> >>>
> >>> Last Friday I tried Qt 4.7.0 under Ubuntu 10.10 (installed from
> >>> Synaptic); everything worked well except the qdrawText() function. See
> >>> the attachments: it always draws y=0 at the top most of the canvas
> >>> when I draw the y-axis tickmark labels, while there are no problems
> >>> with qdrawSegment(). I've spent several hours on this problem but
> >>> cannot find out the reason...
> >>>
> >>> > sessionInfo()
> >>> R version 2.12.0 (2010-10-15)
> >>> Platform: x86_64-unknown-linux-gnu (64-bit)
> >>>
> >>> locale:
> >>> [1] en_US.utf8
> >>>
> >>> attached base packages:
> >>> [1] stats     graphics  grDevices utils     datasets  methods   base
> >>>
> >>> other attached packages:
> >>> [1] RColorBrewer_1.0-2 plumbr_0.0-1       qtpaint_0.7.11
> >>>
> >>> loaded via a namespace (and not attached):
> >>> [1] qtbase_0.8-7
> >>>
> >>> Regards,
> >>> Yihui
> >>> --
> >>> Yihui Xie <xieyihui at gmail.com>
> >>> Phone: 515-294-2465 Web: http://yihui.name
> >>> Department of Statistics, Iowa State University
> >>> 2215 Snedecor Hall, Ames, IA
> >>>
> >>> --
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> >>>
> >>
> >>
> >> _______________________________________________
> >> Qtinterfaces-devel mailing list
> >> Qtinterfaces-devel at lists.r-forge.r-project.org
> >>
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> >>
> >>
> >
>
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