Re: Copy to clipboard for Linux

[Daniel J S. <dan...@ie...>]

Dave Denholm wrote:
> Daniel J Sebald <dan...@ie...> writes:
> 
> 
>>Dave Denholm wrote:
>>
>>
>>>If someone can summarise the problem, and simple steps to reproduce, I
>>>can try to find some time to investigate. (Ideally, the steps would
>>>not require KDE or gnome or such, since I generally just use fvwm.)
>>
>>Problem:  Using the center mouse button doesn't always transfer a plot.
>>
>>Patch:  Attached
>>
>>Method:
>>1) Apply patch.
> 
> 
> didn't bother with this bit - see below.
> 
> 
> 
>>2) Goto demo directory after compile.
>>3) Load 'image.dem'.
> 
> 
> I actually used all.dem
> 
> 
>>4) After every plot, use center mouse button to transfer image to some other app.
>>
>>I find in OpenWriter that I often see the message printed out but no Pixmap showing up.
>>
> 
> 
> I can reproduce using open office - step through all.dem, and try to
> paste each into an ooffice document. Sometimes it doesn't paste.
> 
> 
> I connected both gnuplot and ooffice through xmon to an X server
> (actually, a cygwin X server - I am reduced these days to using a
> windows box as an X server, with all useful work done on a remote
> linux box.) So I can watch all the requests and events that both sides
> are making.
> 
> 
> What I saw was that ooffice asked for the PIXMAP, and gnuplot appeared
> to reply correctly. But the times when the paste failed, I saw that ooffice was
> making no attempt to do a GetImage on the pixmap. So it seems to be a
> problem at that end, not at gnuplot's end.
> 
> But of course that still doesn't explain why the extra XFlush at the
> gnuplot end should change the behaviour.

It doesn't.  I said that it doesn't seem to fix things in the case of CVS.  I may have changed something or have been mistaken.

> 
> Incidentally, ISTR someone mentioning that you should be able to
> repeatedly paste the same image. It seems that ooffice explicitly
> steals selection ownership after the paste. But maybe that's just the
> way I was doing things. So you can only paste into ooffice once.

I said that.  But if you go to the patch I created, you can use 'c' to select the CLIPBOARD so that CNTRL-V will paste multiple copies.

The current CVS has been forced so that only once will a PIXMAP be respondible without having to do a replot.

> 
> 
> I can try abiword - there doesn't seem to be a debian package around
> for OpenWriter ? - Ah - it's part of gnome-office ?
> 
> 
> 
> Oh - on the speculation that the pixmap was somehow not ready when the
> client tried to read it...  IIRC, there is only one pixmap in use :
> gnuplot_x11 renders the plot to that pixmap, and then sets it as the
> background pixmap for the window. So if you can see the plot on
> screen, the pixmap is ready.  But as always, things may have changed,
> since it's a long time since I've been actively involved.

Um, probably not too much different.  Just a guess.

But thanks Dave.  Sounds like we are confirming a bug...  Not 4.2 critical, but somewhat important.

Dan