Re: Clarification on terminal size for Qt terminal and generally

[Mojca M. <moj...@gm...>]

On Sat, Mar 15, 2014 at 4:20 AM, Daniel J Sebald wrote:
> On 03/10/2014 01:36 AM, Daniel J Sebald wrote:
>>
>> On 03/09/2014 04:47 PM, Daniel J Sebald wrote:
>>
>>> I'm in the
>>> middle of programming this right now, so it would be good to know how it
>>> should behave.
>>
>>
>> I've placed an initial version Qt window size retention on the patch
>> tracker:
>>
>> http://sourceforge.net/p/gnuplot/patches/663/
>
>
> Mojca,
>
> If you have some time this weekend, please try out the Qt window size
> retention patch.

I'm very grateful for the change that keeps me in terminal as opposed
to jumping to the plotting area and having to alt-tab back to terminal
after every command.

I'm not sure how to reproduce the following (and maybe I should check
with master), but as a rule of thumb it happened when I had all the
cores 100% occupied with other tasks:

Terminal type set to 'qt'
gnuplot> plot sin(x)
qt_graphics: "QLocalSocket: Socket operation timed out"
qt_graphics: Not receiving requested widget size
Error: short read from gnuplot_qt socket while expecting font metrics
         warning: Too many axis ticks requested (>1e+01)
         warning: Terminal canvas area too small to hold plot.
        Check plot boundary and font sizes.
         warning: Too many axis ticks requested (>1e+01)
         warning: Too many axis ticks requested (>4)

Other than that it sometimes happens that I don't get any text labels
at all (one of the things that Ethan fixed), but don't hold my word
for it because I'm not sure if that was a side effect of forgetting
"make install" or if that was a real issue.

The second plot shrinks – it uses a different plotting area. (The
first plot doesn't fully fit into the window – x axes labels are too
low. The second plot now fixes that by using smaller plotting area.)

I'm not sure about the pattern (how exactly to reproduce it), but very
often sizes of the plots are completely off (either too small or too
big). The ratio seems right, but scaling is not. See the attachment.
Please note that I have "Replot on resize" switched off (because it's
not bearable to have it turned on as it resizes every few pixels.) But
usually the plot should adjust after calling "plot ...". Here it
sometimes does and sometimes doesn't.

>From time to time I also get

gnuplot> qt_graphics: "QLocalSocket: Socket operation timed out"
qt_graphics: Not receiving requested widget size
qt_graphics: "QLocalSocket: Socket operation timed out"
qt_graphics: Not receiving requested widget size

(with "Replot on resize" turned on).

I didn't try to understand the changes in the source code, I was only
testing the functionality.

(I'm not saying that everything reported above is specific to the
patch. Some problems might be present in trunk already. I would need
to check more carefully, but some "errors/problems" are somewhat
random.)

Mojca