New submission from Terry J. Reedy <tjre...@udel.edu>:
#34047 was about scrollbar issues on MacOS in 3.7.0 and 3.6.6. One was due to
an IDLE bug, which was fixed on the issue. Others, which can be demonstrated
in the pure tkinter code below, are the subject of this issue.
1. Slider does not move properly when at top or bottom.
2. Clicking trough near slider at top or bottom has no effect.
See #34047 for more discussions and details.
Vlad Tudorache posted the code below as msg323349 of #34047 and attached as
tktest.py, along with tkinter_scroll_issues.mov.
---
import tkinter
root = tkinter.Tk()
text = tkinter.Text(root)
vbar = tkinter.Scrollbar(root)
vbar.pack(side=tkinter.RIGHT, fill=tkinter.Y)
text.pack(side=tkinter.LEFT, fill=tkinter.BOTH, expand=1)
text.config(yscrollcommand=vbar.set)
vbar.config(command=text.yview)
lines = ['This is the line number %d.\n' % i for i in range(256)]
text.insert(tkinter.END, ''.join(lines))
def click_trace(event):
text.insert('%d.%d' % (1, 0), 'Clicked at (%d,%d) on %s.\n' % (event.x,
event.y, vbar.identify(event.x, event.y)))
vbar.bind('<Button-1>', click_trace)
root.mainloop()
---
"Clicking at the top on the slider shows that the Scrollbar considers it as
being on "through1" (in Tk the zone between the upper arrow and the "slider")
and NOT on the "slider". Please, play with the script (python3 tktest.py) and
see the results for yourselves."
----------
components: Tkinter, macOS
messages: 326299
nosy: ned.deily, ronaldoussoren, serhiy.storchaka, terry.reedy, wordtech
priority: normal
severity: normal
stage: needs patch
status: open
title: Tkinter scrollbar issues on Mac.
type: behavior
versions: Python 3.6, Python 3.7, Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34796>
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