Tkinter如何检测文本窗口小部件内容是否太长？

Question

I'm just needing something that can tell if the content in a 1 line text widget is too long, thus needing a horizontal scrollbar.

I have searched questions others have posted and found a solution for a vertical scrollbar, but it sadly doesn't work as accurately with the horizontal.

My solution for vertical:

if self.verse_box.cget('height') < int(self.verse_box.index('end-1c').split('.')[0]):
    print "Too many lines"

But if I switch it like so it doesn't work as some characters are smaller and thus can have more fit in the line:

if self.verse_box.cget('width') < int(self.tags_box.index('end-1c').split('.')[1]):
    print "This one line is too long"

Any and all advice would be greatly appreciated, thanks! ^-^

Answer 1

On any widget that supports scrolling, you can call the .xview() or .yview() method without parameters to get the current start/end fractions of the visible area along that axis. If the entire contents are already visible, this will be the tuple (0.0, 1.0) . If the returned value is anything else, a scrollbar is needed to see the entire contents.