On Tue, Sep 25, 2012 at 6:34 AM, Edward K. Ream <[email protected]> wrote:
> On Mon, Sep 24, 2012 at 10:14 PM, F.S. <[email protected]> wrote:
>
>> 4163 was the first revision that introduced the bug. Diff shows quite a bit
>> of change in the qtGui.py w.r.t. cursors and other events.
Happily, I guess you could say, this bug bit me in the last week, so I
have a reliable test node. It's simply the docstring for the
screencast plugin. I've copied it to test.leo for testing, but I
haven't pushed anything.
To reproduce the bug, simply scroll to the end of the node, either
with the mouse wheel or Ctrl-End or even with lots of arrow keys. Now
click near the end of the body text and the text scrolls so the cursor
is invisible.
Per the diff, my attention was drawn to this line in
leoQtBaseTextWidget.mouseReleaseEvent::
c.k.keyboardQuit(setFocus=False)
Disabling this line makes the unwanted scroll go away. Amazingly, the
following comment precedes this line::
# 2011/10/02: Calling k.keyboardQuit here causes some
# unwanted scrolling in rare cases, but seemingly that
# can't be helped: removing this call would be confusing.
Knowing that the unwanted scroll happens somewhere in the
k.keyboardQuit logic is a good start, but now we must find out exactly
what is causing the unwanted scroll.
F.S., could you verify that disabling this line "fixes" the bug for
you with the latest bzr version? Thanks.
Edward
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