<![CDATA[mojo.canvas crashing?]]>Hi! I'm finding that mojo.canvas somehow crashes my RoboFont whenever there's an error. I don't see anything in the output window, and RF just quits. If I switch to DB's drawView, I can see the report in the output window (usually a KeyError or a RoboFontError).

Is this a known issue, or maybe I'm implementing something incorrectly? I don't have an example right now, but can write one if needed.

Thanks!

]]>https://forum.robofont.com/topic/444/mojo-canvas-crashingRSS for NodeThu, 14 May 2026 03:52:44 GMTSun, 07 Jan 2018 21:22:22 GMT60<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:58:38 GMT]]>Hi! I'm finding that mojo.canvas somehow crashes my RoboFont whenever there's an error. I don't see anything in the output window, and RF just quits. If I switch to DB's drawView, I can see the report in the output window (usually a KeyError or a RoboFontError).

Is this a known issue, or maybe I'm implementing something incorrectly? I don't have an example right now, but can write one if needed.

Thanks!

]]>https://forum.robofont.com/post/1475https://forum.robofont.com/post/1475Thu, 11 Jan 2018 09:58:38 GMT<![CDATA[Reply to mojo.canvas crashing? on Mon, 08 Jan 2018 09:30:21 GMT]]>is there anything in the robofont.log (you will find this on <userName>/library/Application Support/RoboFont

what is your OS?

thanks

]]>https://forum.robofont.com/post/1476https://forum.robofont.com/post/1476Mon, 08 Jan 2018 09:30:21 GMT<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:54:03 GMT]]>Here's what the log shows.
0_1515427969873_Screen Shot 2018-01-08 at 11.08.30 AM.png

To test this, I used the basic vanilla.EditText instead of SpaceCenter's GlyphSequenceEditText. When I get this error with DB's DrawView, it's logged in the Output window, but won't crash RF.

I'm currently on Sierra, 10.12.6.

]]>https://forum.robofont.com/post/1477https://forum.robofont.com/post/1477Thu, 11 Jan 2018 09:54:03 GMT<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:54:29 GMT]]>(Of course, if I just use GlyphSequenceEditText, it's fine for the most part, unless I type in / + missing glyph.)

]]>https://forum.robofont.com/post/1478https://forum.robofont.com/post/1478Thu, 11 Jan 2018 09:54:29 GMT<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:54:51 GMT]]>I think I see what you are trying to do :)

? will not be a valid glyph name... you need to convert the input string from the EditText object to a list of glyph names.

from defconAppKit.tools.textSplitter import splitText

font = CurrentFont()
print splitText(u“héllo world?”, font.getCharacterMapping(), fallback=“.notdef”)

The crash happens because it goes wrong while drawing on screen and that is the worst place to raise a traceback...

Good luck

]]>https://forum.robofont.com/post/1479https://forum.robofont.com/post/1479Thu, 11 Jan 2018 09:54:51 GMT<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:55:27 GMT]]>Right — I understand why I got that error, but I'm curious why Canvas crashes but DrawView doesn't? It's also not specific to that error (sorry, I probably should've mentioned this earlier).

Here's another example from the log:
0_1515513306396_Screen Shot 2018-01-09 at 10.52.16 AM.png

Sidenote: On top of using GlyphSequenceEditText (or splitText), I've also had to use a try/except block because while the .notdef fallback is returned when I type in /?, it doesn't do it for something like /3.

Thanks Frederik!

]]>https://forum.robofont.com/post/1480https://forum.robofont.com/post/1480Thu, 11 Jan 2018 09:55:27 GMT<![CDATA[Reply to mojo.canvas crashing? on Thu, 11 Jan 2018 09:56:12 GMT]]>DrawBot only sets pdf data in the DrawView when the script is done. With a Canvas view you draw directly while its refreshing the view. The is lots faster but also fragile.

Already implemented in the next RoboFont updates is that a Canvas object catches errors while sending notifications (like draw, mouseDown, ...) to a delegate object.

]]>https://forum.robofont.com/post/1481https://forum.robofont.com/post/1481Thu, 11 Jan 2018 09:56:12 GMT<![CDATA[Reply to mojo.canvas crashing? on Wed, 10 Jan 2018 13:16:09 GMT]]>Ah, makes total sense!

(I guess I should have realized the difference since I had to use DrawView's setPDFDocument(pdf) function... haha :smirk: )

Thanks for the response. The Canvas update sounds great!

]]>https://forum.robofont.com/post/1482https://forum.robofont.com/post/1482Wed, 10 Jan 2018 13:16:09 GMT