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"""A ScrolledText widget feels like a text widget but also has a |
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vertical scroll bar on its right. (Later, options may be added to |
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add a horizontal bar as well, to make the bars disappear |
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automatically when not needed, to move them to the other side of the |
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window, etc.) |
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Configuration options are passed to the Text widget. |
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A Frame widget is inserted between the master and the text, to hold |
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the Scrollbar widget. |
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Most methods calls are inherited from the Text widget; Pack, Grid and |
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Place methods are redirected to the Frame widget however. |
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""" |
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from tkinter import Frame, Text, Scrollbar, Pack, Grid, Place |
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from tkinter.constants import RIGHT, LEFT, Y, BOTH |
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__all__ = ['ScrolledText'] |
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class ScrolledText(Text): |
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def __init__(self, master=None, **kw): |
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self.frame = Frame(master) |
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self.vbar = Scrollbar(self.frame) |
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self.vbar.pack(side=RIGHT, fill=Y) |
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kw.update({'yscrollcommand': self.vbar.set}) |
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Text.__init__(self, self.frame, **kw) |
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self.pack(side=LEFT, fill=BOTH, expand=True) |
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self.vbar['command'] = self.yview |
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text_meths = vars(Text).keys() |
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methods = vars(Pack).keys() | vars(Grid).keys() | vars(Place).keys() |
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methods = methods.difference(text_meths) |
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for m in methods: |
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if m[0] != '_' and m != 'config' and m != 'configure': |
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setattr(self, m, getattr(self.frame, m)) |
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def __str__(self): |
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return str(self.frame) |
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def example(): |
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from tkinter.constants import END |
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stext = ScrolledText(bg='white', height=10) |
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stext.insert(END, __doc__) |
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stext.pack(fill=BOTH, side=LEFT, expand=True) |
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stext.focus_set() |
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stext.mainloop() |
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if __name__ == "__main__": |
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example() |
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