Re: [Gtkwave-users] Requests: signal name for bound process script, export SVG,
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Re: [Gtkwave-users] Requests: signal name for bound process script, export SVG,
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From: <by...@nc...> - 2023-04-06 19:34:14
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Hello Sujay,
It looks like I misread your previous note...font color shouldn't be
hard to do. I read it as new fonts, different font sizes, etc.
I'd say open a bug requesting a feature enhancement request on github,
which is where the current development for future versions is going
on. Right now, I'm too busy to work on gtkwave as my day job is
consuming most of my entire day.
As a side note to everyone, Sourceforge at the point is just for
bugfix maintenance releases. I keep the Sourceforge repo around so I
have a known stable version that I can use at work.
Thanks,
-Tony
-----------------------------------------From: "Sujay Phadke"
To: gtk...@li...
Cc:
Sent: Thursday April 6 2023 12:48:21AM
Subject: Re: [Gtkwave-users] Requests: signal name for bound process
script, export SVG,
Hi Tony, for #1, I was asking to have signal names visibility in the
"translate filter" process. CMIIW, but what you've stated is for the
"transaction filter" process mechanism. Yes, for the latter, we do
get a simplified VCD with the signal name. But we don't get that for
the former, which is easier to implement and use. In the former, a
process only sees the raw data of the associated signal on STDIN,
without the signal name.
D0 D1 D2 It'd be advantageous to have the signal_name tag before the
raw data streaming in (maybe with a controlling switch input so it
doesn't break the flow for others?):
D0 D1 D2 .....
I did look into the translate filter code (ptranslate.c). I think it
can be done with some modifications to add_filter_callback_2() and
pipeio
For #3, I feel the performance is not going to be greatly impacted.
We can already change the color of wave backgrounds with different
colors, dynamically, based on the filters. I've not noticed any
performance impact with this. Changing the font color would be part of
the same code, but there isn't a way to do it at present.
Thanks for your help. I know this is probably not a priority for you.
Maybe I'll get to it sometime when I can understand the code flow
better.
best regards, Sujay
On Mon, Mar 20, 2023 at 10:46 PM wrote:
Hello Sujay,
I understand what you want to do for #1. I'm telling you that from
gtkwave's perspective, it's a different process, so it's not more
efficient for me, though it might be for you as a developer.
Note that passing signal names can be done along the "$" directive
mechanism. I had to look at the source to see what it's doing as I
wrote this code back in 2010...
See save_nodes_to_export_generic() in vcd_saver.c and add whatever
you need. Some information is already there. If you look at existing
input coming from gtkwave, especially lines starting with "$", you'll
see a line like this:
$comment name val[7:0] $end
...I think such a name or something similar would give you what you
need.
For #3, yes, they're static. If gtkwave was a tool designed for
generating documentation, it could certainly throw new fonts up at
will, but doing so would be very bad for performance for an
interactive tool.
-Tony
----------------------------------------- From: "Sujay Phadke"
To: gtk...@li...
Cc:
Sent: Monday March 20 2023 2:20:05AM
Subject: Re: [Gtkwave-users] Requests: signal name for bound process
script, export SVG,
Hey Tony, Thanks for the reply. But I don't understand the responses
1 and 3:
1. Yes, a new process will be spawned for every signal. However, the
logic of the executable will still remain the same. I want to do
something like:
if 'sig_name' == 'signal0': sys.stdout.write('Nonen') else:
sys.stdout.write(readline)
Unless we pass the metadata for the signal, I don't see how a
separate process will help. Either passing in the signal name/id as
metadata on stdin, alongwith the signal values, or calling the process
with an argument in the TCL script would work.
Is there a way to accomplish this?
3. I know about those rc variables. However, those are static aren't
they? I want to be able to change the waveform text foreground color
dynamically (per wave phase), just as we do with the background color
(using the ?...? prefix before the value in the translation file). Is
there a way to do this?
On Mon, Mar 20, 2023 at 1:01 PM wrote:
Thanks for your comments.
1) Each signal has a separate process instance / set of stdin/stdout
attached to it for process filter, so even though you'd be able to use
a single script, performance-wise it wouldn't really make too much
difference as multiple processes will be created, anyway.
2) Unfortunately, I don't have the time for such a thing right now.
PS and Framemaker do generate lists of vectors but I don't know if a
converter exists from those to SVG. Someone else is working on a GTK4
port and I don't know if his changes will address this as I believe he
was planning on collapsing the redundant print.c code into what
signal.c/waveform.c already does.
3) The rc variables fontname_signals and fontname_waves should allow
changing the fonts. See function do_font_load() in fonts.c.
Best regards,
-Tony
----------------------------------------- From: "Sujay Phadke"
To: gtk...@li...
Cc:
Sent: Sunday March 19 2023 11:52:19PM
Subject: [Gtkwave-users] Requests: signal name for bound process
script, export SVG,
Hello everyone, First of all, I must say the GTKWave is an excellent
program. Kudos!
I wanted to request the following: 1. Signal name for process filter
script - currently, I have a python script used as a process filter
for various signals. However, I want to parse the input data
differently, based on what signal it is coming from. Example: for
signal0 I may want to convert “-1” to “None”. However, I may
not want to do that for signal1
The only want I know of currently is to attach different scripts to
different signals, which is inefficient. Is there a way that the
signal name could also be passed on to the script?
2. Please consider having the ability to export the current view as
SVG file. It makes it much more efficient for presenting or pasting
into a webpage.
3. Can the font color of the text inside the waves be changed? I can
only change the background color of a waveform using the
“?bgcolor?” prefix before the name. Problem is, some background
colors are useless since the text inside is too light in color. I’m
forced to use only dark backgrounds as a result.
Best regards, Sujay _______________________________________________
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