`svalue(gpanedgroup_obj)` <- 0.25 fails in some cases

[landroni]

The following feels like a bug:

w <- gwindow()
g <- gpanedgroup(cont=w)
svalue(g) <- 0.25
tbl <- gtable(names(mtcars), cont=g)
dg <- ggroup(cont=g)

I would have expected tbl to take 25% of the paned group (even if the 2nd part of the paned group contains only a ggroup), but it takes 100%. Is this expected behaviour?

This seems like a timing issue. If instead of the above I first execute:

w <- gwindow()
g <- gpanedgroup(cont=w)
tbl <- gtable(names(mtcars), cont=g)
dg <- ggroup(cont=g)

And then once the UI is up:

svalue(g) <- 0.25

Then it works. Is this something that can be fixed?

[jverzani]

Maybe if you call visible after setting up GUI. Usually a good idea, as it appears to render faster.

[landroni]

Indeed, this works:

w <- gwindow(visible=F)
g <- gpanedgroup(cont=w)
tbl <- gtable(names(mtcars), cont=g)
dg <- ggroup(cont=g)
visible(w) <- TRUE
svalue(g) <- 0.25

But still, the behaivor seems confusing (and has bitten me several times in the past). Why is this happening (i.e. svalue(g) <- 0.25 failing in some non-obvious cases)? And should this perhaps be documented somehow?

[jverzani]

The problem is that the 0.25 is based on the size of the widget. For some widgets, that is well determined until it is drawn. I'll add a not to the docs.

On Sun, Aug 3, 2014 at 3:19 AM, landroni notifications@github.com wrote:

Indeed, this works:

w <- gwindow(visible=F) g <- gpanedgroup(cont=w) tbl <- gtable(names(mtcars), cont=g) dg <- ggroup(cont=g) visible(w) <- TRUE svalue(g) <- 0.25

But still, the behaivor seems confusing (and has bitten me several times in the past). Why is this happening (i.e. svalue(g) <- 0.25 failing in some non-obvious cases)? And should this perhaps be documented somehow?

— Reply to this email directly or view it on GitHub https://github.com/jverzani/gWidgets2/issues/69#issuecomment-50983939.

John Verzani Chair, Department of Mathematics College of Staten Island, CUNY verzani@math.csi.cuny.edu

[landroni]

I see, thanks. Closing now.