RE: Drawing electronic circuits or schematics with schemdraw Python package in a wxPython GUI

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Dietmar,

Following installing wxPython the command wxdemo should download (if not al=
ready done), unpack (if not already done) and run the demo for the current =
version of wxPython - if it doesn't I would welcome any debug information t=
hat you may have. Likewise the command wxdocs should download (if not alrea=
dy done), unpack (if not already done) and open in the default browser the =
documents for the current version of wxpython. Both of these should automat=
ically be installed in the python/Scripts location when you pip install wxP=
ython.

I put this together because of the aforementioned tricky bits and was delig=
hted when they made it into the official distribution so if they have stopp=
ed working then please let me know.

Steve Barnes

From: [email protected] <[email protected]> On =
Behalf Of Dietmar Schwertberger
Sent: 26 November 2021 16:33
To: [email protected]
Subject: Re: [wxPython-users] Drawing electronic circuits or schematics wit=
h schemdraw Python package in a wxPython GUI

On 26.11.2021 10:13, Matthias Brennwald wrote:
Not sure what you mean here. Something else than wxPython? Something else t=
han SVG? Or something else?

Something other than static bitmaps. E.g. if you want to build a schematic =
designer, then you probably need to implement your main window in another w=
ay, i.e. draw the elements. But from your posting I understood that you jus=
t want to display some static image.


The wxPython Demo is a bit tricky to get hold of, at least in my Linux envi=
ronment. The instructions at https://wxpython.org/pages/downloads/index.htm=
l<https://emea01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fwxpy=
thon.org%2Fpages%2Fdownloads%2Findex.html&data=3D04%7C01%7C%7Ca3072f0974b44=
069eb9508d9b0fa61dd%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377354116=
93133136%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTi=
I6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=3Dbz9IVDe%2FkX1NW%2BoNn4e3atXQ2d%2BwT=
xDCoWdXwthyIlk%3D&reserved=3D0> are a bit sketchy when it comes to Linux.

Well, there's the section "Extra Files".
You can just download it from here and unpack it to your user directory and=
 run from there by "python demo.py":
https://extras.wxpython.org/wxPython4/extras/4.0.0/wxPython-demo-4.0.0.tar.=
gz<https://emea01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fext=
ras.wxpython.org%2FwxPython4%2Fextras%2F4.0.0%2FwxPython-demo-4.0.0.tar.gz&=
data=3D04%7C01%7C%7Ca3072f0974b44069eb9508d9b0fa61dd%7C84df9e7fe9f640afb435=
aaaaaaaaaaaa%7C1%7C0%7C637735411693133136%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiM=
C4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=3Dk3=
AE51dAMR1Q%2BPinHFXsJdzvVT0eh%2FVKDd4XWQa4a2E%3D&reserved=3D0>


That said, I managed to get the schemdraw PNG data to display in a wx panel=
. I believe the trick is convert the schemdraw PNG data to a stream, which =
can then feed into wx.ImageFromStream(...). I added a small self-contained =
example below (code inspired by googling for examples by others). I'd appre=
ciate any thoughts on this.

Your code looks good for me.

Regards,

Dietmar
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ATeWH%2FE4xd5OSAPJHJJc7aIFp6LEwGY%3D&reserved=3D0>.

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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Dietmar,<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Following=
 installing wxPython the command wxdemo should download
<i>(if not already done)</i>, unpack <i>(if not already done)</i> and run t=
he demo for the current version of wxPython - if it doesn't I would welcome=
 any debug information that you may have. Likewise the command wxdocs shoul=
d download
<i>(if not already done)</i>, unpack <i>(if not already done)</i> and open =
in the default browser the documents for the current version of wxpython. B=
oth of these should automatically be installed in the python/Scripts locati=
on when you pip install wxPython.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">I put thi=
s together because of the aforementioned tricky bits and was delighted when=
 they made it into the official distribution so if they have stopped workin=
g then please let me know.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US">Steve Bar=
nes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:EN-US"><o:p>&nbs=
p;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=
=3D"EN-US"> [email protected] &lt;wxpython-users@googlegroups=
.com&gt;
<b>On Behalf Of </b>Dietmar Schwertberger<br>
<b>Sent:</b> 26 November 2021 16:33<br>
<b>To:</b> [email protected]<br>
<b>Subject:</b> Re: [wxPython-users] Drawing electronic circuits or schemat=
ics with schemdraw Python package in a wxPython GUI<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">On 26.11.2021 10:13, Matthias Brennwald wrote:<o:p><=
/o:p></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal">Not sure what you mean here. Something else than wxP=
ython? Something else than SVG? Or something else?
<o:p></o:p></p>
</div>
</div>
</blockquote>
<p>Something other than static bitmaps. E.g. if you want to build a schemat=
ic designer, then you probably need to implement your main window in anothe=
r way, i.e. draw the elements. But from your posting I understood that you =
just want to display some static
 image.<o:p></o:p></p>
<p class=3D"MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<div>
<p class=3D"MsoNormal">The wxPython Demo is a bit tricky to get hold of, at=
 least in my Linux environment. The instructions at
<a href=3D"https://emea01.safelinks.protection.outlook.com/?url=3Dhttps%3A%=
2F%2Fwxpython.org%2Fpages%2Fdownloads%2Findex.html&amp;data=3D04%7C01%7C%7C=
a3072f0974b44069eb9508d9b0fa61dd%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0=
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oNn4e3atXQ2d%2BwTxDCoWdXwthyIlk%3D&amp;reserved=3D0">
https://wxpython.org/pages/downloads/index.html</a> are a bit sketchy when =
it comes to Linux.<o:p></o:p></p>
</div>
</div>
</div>
</blockquote>
<p>Well, there's the section &quot;Extra Files&quot;.<br>
You can just download it from here and unpack it to your user directory and=
 run from there by &quot;python demo.py&quot;:<br>
<a href=3D"https://emea01.safelinks.protection.outlook.com/?url=3Dhttps%3A%=
2F%2Fextras.wxpython.org%2FwxPython4%2Fextras%2F4.0.0%2FwxPython-demo-4.0.0=
.tar.gz&amp;data=3D04%7C01%7C%7Ca3072f0974b44069eb9508d9b0fa61dd%7C84df9e7f=
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0&amp;sdata=3Dk3AE51dAMR1Q%2BPinHFXsJdzvVT0eh%2FVKDd4XWQa4a2E%3D&amp;reserv=
ed=3D0">https://extras.wxpython.org/wxPython4/extras/4.0.0/wxPython-demo-4.=
0.0.tar.gz</a><o:p></o:p></p>
<p><o:p>&nbsp;</o:p></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<div>
<p class=3D"MsoNormal">That said, I managed to get the schemdraw PNG data t=
o display in a wx panel. I believe the trick is convert the schemdraw PNG d=
ata to a stream, which can then feed into wx.ImageFromStream(...). I added =
a small self-contained example below
 (code inspired by googling for examples by others). I'd appreciate any tho=
ughts on this.<o:p></o:p></p>
</div>
</div>
</div>
</blockquote>
<p>Your code looks good for me.<o:p></o:p></p>
<p>Regards,<o:p></o:p></p>
<p>Dietmar<o:p></o:p></p>
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8010420a60%40schwertberger.de</a>.<o:p></o:p></p>
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