How to generate preview of documents saved in Google Drive? asks effectively the same question as this.
However...
- The answer was 'no'
- Its an old question and Google Drive SDK has changed a lot since then.
- It doesn't (explicitly) relate to Realtime files.
- I also have found nothing in Google's documentation.
So hopefully this is a reasonable question:
Can I generate a preview of my custom Realtime file for Google to show when "Preview" is selected from the right-click menu in Drive? It does show the option to edit the file using my app, but it's an ugly and discouraging screen for the user to find themselves looking at.
(And if a method is to in some way use a thumbnail, when and how should that be generated and passed? Note, this is all client-side.)