| 1 | n/a | """A ScrolledText widget feels like a text widget but also has a |
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| 2 | n/a | vertical scroll bar on its right. (Later, options may be added to |
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| 3 | n/a | add a horizontal bar as well, to make the bars disappear |
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| 4 | n/a | automatically when not needed, to move them to the other side of the |
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| 5 | n/a | window, etc.) |
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| 6 | n/a | |
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| 7 | n/a | Configuration options are passed to the Text widget. |
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| 8 | n/a | A Frame widget is inserted between the master and the text, to hold |
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| 9 | n/a | the Scrollbar widget. |
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| 10 | n/a | Most methods calls are inherited from the Text widget; Pack, Grid and |
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| 11 | n/a | Place methods are redirected to the Frame widget however. |
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| 12 | n/a | """ |
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| 13 | n/a | |
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| 14 | n/a | __all__ = ['ScrolledText'] |
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| 15 | n/a | |
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| 16 | n/a | from tkinter import Frame, Text, Scrollbar, Pack, Grid, Place |
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| 17 | n/a | from tkinter.constants import RIGHT, LEFT, Y, BOTH |
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| 18 | n/a | |
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| 19 | n/a | class ScrolledText(Text): |
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| 20 | n/a | def __init__(self, master=None, **kw): |
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| 21 | n/a | self.frame = Frame(master) |
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| 22 | n/a | self.vbar = Scrollbar(self.frame) |
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| 23 | n/a | self.vbar.pack(side=RIGHT, fill=Y) |
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| 24 | n/a | |
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| 25 | n/a | kw.update({'yscrollcommand': self.vbar.set}) |
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| 26 | n/a | Text.__init__(self, self.frame, **kw) |
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| 27 | n/a | self.pack(side=LEFT, fill=BOTH, expand=True) |
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| 28 | n/a | self.vbar['command'] = self.yview |
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| 29 | n/a | |
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| 30 | n/a | # Copy geometry methods of self.frame without overriding Text |
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| 31 | n/a | # methods -- hack! |
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| 32 | n/a | text_meths = vars(Text).keys() |
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| 33 | n/a | methods = vars(Pack).keys() | vars(Grid).keys() | vars(Place).keys() |
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| 34 | n/a | methods = methods.difference(text_meths) |
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| 35 | n/a | |
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| 36 | n/a | for m in methods: |
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| 37 | n/a | if m[0] != '_' and m != 'config' and m != 'configure': |
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| 38 | n/a | setattr(self, m, getattr(self.frame, m)) |
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| 39 | n/a | |
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| 40 | n/a | def __str__(self): |
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| 41 | n/a | return str(self.frame) |
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| 42 | n/a | |
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| 43 | n/a | |
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| 44 | n/a | def example(): |
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| 45 | n/a | from tkinter.constants import END |
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| 46 | n/a | |
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| 47 | n/a | stext = ScrolledText(bg='white', height=10) |
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| 48 | n/a | stext.insert(END, __doc__) |
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| 49 | n/a | stext.pack(fill=BOTH, side=LEFT, expand=True) |
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| 50 | n/a | stext.focus_set() |
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| 51 | n/a | stext.mainloop() |
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| 52 | n/a | |
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| 53 | n/a | if __name__ == "__main__": |
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| 54 | n/a | example() |
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