[RQt-devel] qtgui obsolete forever?

[Yihui Xie]

The R code chunks in the layout section of the qtpaint vignette cannot
run, and they are marked with 'eval=FALSE':

<<layout-layers,eval=FALSE>>=
scene <- qgraphicsScene()
figLayer <- qlayer(scene)
titleLayer <- qlayer(figLayer, titlePainter, rowSpan = 2)
yaxis <- qlayer(figLayer, yAxisPainter, row = 1)
plotLayer <- qlayer(figLayer, plotPainter, row = 1, col = 1)
xaxis <- qlayer(figLayer, xAxisPainter, row = 2, col = 1)
@


<<layout-preferred-dims,eval=FALSE>>=
layout <- figLayer$layout()
layout$setRowPreferredHeight(0, 75)
layout$setRowPreferredHeight(1, 400)
layout$setRowPreferredHeight(2, 75)
layout$setColumnPreferredWidth(0, 75)
layout$setColumnPreferredWidth(1, 600)
@


<<layout-stretch-factor,eval=FALSE>>=
layout$setRowStretchFactor(0, 0)
layout$setRowStretchFactor(2, 0)
layout$setColumnStretchFactor(0, 0)
@

For example,

> library(qtpaint)
> scene <- qgraphicsScene()
Error: could not find function "qgraphicsScene"

Even if I correct it with qscene(), there are still errors following,
e.g. 'layout' does not have a child named 'setRowPreferredHeight'.

> sessionInfo()
R version 2.11.1 (2010-05-31)
x86_64-pc-linux-gnu

locale:
[1] en_US.utf8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] qtpaint_0.7.8 qtbase_0.7-1

loaded via a namespace (and not attached):
[1] tools_2.11.1



Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: 515-294-6609 Web: http://yihui.name
Department of Statistics, Iowa State University
3211 Snedecor Hall, Ames, IA



On Wed, Aug 4, 2010 at 8:38 AM, Michael Lawrence
<lawrence.michael at gene.com> wrote:
> The vignette probably needs to be fixed. The addressBook.R demo does use a
> grid layout, but the syntax will need to be adjusted for QGraphicsView
> framework.
>
> It would be helpful if you could paste the code that does not work, along
> with the error (or screenshot).
>
> Btw, Deepayan, I'm giving the talk on qtpaint/qtbase stuff at JSM today.
> Wish you could have made it.
>
> Thanks,
> Michael
>