Editbox scrolls insertion point to bottom

wxPython Users
#1

I have a bit of an app where I translate text, and I do it in a large editbox, taking most of the height of the screen. I do it one paragraph at a time, typing the new one above the source paragraph. The trouble is that when I come to the end of the line and the word I type wraps into the next line, the whole text scrolls automatically so that the line into which I’m typing is now at the bottom - the source paragraph is invisible and I have to scroll it up. This becomes very tiresome after a while.

Now this is not pure wx that I’m using, it’s the Dabo framework… and I have a feeling I can fix this myself. I’m just asking where to start, where would the method I need to adjust (or perhaps a property) exactly be. Does this happen in pure wxPython too or is this where Dabo tried to help?

#2

Not sure what do you mean by “editbox”, since there’s no such a thing in wxPython. On top of my mind I can’t think of any text widget with a behavior like the one you’re reporting… a little relevant code would help here. Anyway, perhaps you could just type your text below the source paragraph instead? You know, if nothing else works…

#3

I’ve spent some time in the debugger with it and… well, it’s too complex to find, there are dozens of events which fire and I can’t find the one during which this happens. But at least I’ve found the class - it’s the wx.TextCtrl that Dabo’s dEditBox is based on. But then I can’t find where wx.TextCtrl is defined.

Found that this works:

		lnSS = self.SelectionStart
#...some more code in editbox.onKeyChar() here...
		self.ShowPosition(lnSS)

Though at times it jumps after my code inserts a bit of text here and there, no matter, this is much better than all the scrolling I had to do.
Thanks for listneing, you were a real Auntie Emma. Just looking for stuff to write here, I found this :).

#4

wx.TextCtrl is basic wxPython, and it comes with some basic, normal behavior: try this:

import wx

class Main(wx.Frame):
    def __init__(self, *a, **k):
        wx.Frame.__init__(self, *a, **k)
        wx.TextCtrl(self, style=wx.TE_MULTILINE)
        
app = wx.App()
Main(None).Show()
app.MainLoop()

Now, there must be some more configuration available in your Dabo widget… if you have to manually realign after each keystroke… it seems pretty convoluted…

#5

The keystroke check is there for different reasons, I’m checking for an underscore, in which cases I show a record picker to insert a bit of pseudo-link into the text. Now that the code is already there, it looked like a perfect place to put this. And mind you, the first line was already there… and I’ve found that the self.Focus() in the end was unnecessary, so I ended up with the same number of lines :).