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I would like to subclass an existing Gtk widget and get it to work with Glade3. The code is all python, and I’m using PyGObject.
What I want to do is extend Gtk.TextView and be able to add it to my glade UI as if it were a native widget.
I read that it was possible with Glade 2, but I’m not sure how to do this with Glade 3, and I can’t seem to find any examples or documentation on this. Any help would be appreciated. Thanks.
Finally found out how to do it. First, you have to declare that your glade file depends upon a catalog.
Next, create a catalog.xml file. To extend a treeview, it should look something like this:
And that’s it. Obviously There’s no python code written yet, but that won’t prevent Glade from displaying your custom widget. It will just treat it as a normal TextView, Label, or whatever else you want to extend.
Oh, and I couldn’t find a way in Glade itself to create a CustomTextView unfortunately. But what you can do is add a regular TextView in glade, save the glade file and open it in a text editor. Just look for the treeview you created and change like so:
Open it back up in glade and it shows up. Then just define a CustomTreeView class in python and extend as needed.