mirror of https://github.com/python/cpython
108 lines
4.1 KiB
Python
108 lines
4.1 KiB
Python
"""Demo based on the demo mclist included with tk source distribution."""
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import Tkinter
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import tkFont
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import ttk
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tree_columns = ("country", "capital", "currency")
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tree_data = [
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("Argentina", "Buenos Aires", "ARS"),
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("Australia", "Canberra", "AUD"),
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("Brazil", "Brazilia", "BRL"),
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("Canada", "Ottawa", "CAD"),
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("China", "Beijing", "CNY"),
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("France", "Paris", "EUR"),
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("Germany", "Berlin", "EUR"),
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("India", "New Delhi", "INR"),
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("Italy", "Rome", "EUR"),
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("Japan", "Tokyo", "JPY"),
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("Mexico", "Mexico City", "MXN"),
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("Russia", "Moscow", "RUB"),
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("South Africa", "Pretoria", "ZAR"),
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("United Kingdom", "London", "GBP"),
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("United States", "Washington, D.C.", "USD")
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]
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def sortby(tree, col, descending):
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"""Sort tree contents when a column is clicked on."""
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# grab values to sort
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data = [(tree.set(child, col), child) for child in tree.get_children('')]
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# reorder data
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data.sort(reverse=descending)
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for indx, item in enumerate(data):
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tree.move(item[1], '', indx)
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# switch the heading so that it will sort in the opposite direction
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tree.heading(col,
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command=lambda col=col: sortby(tree, col, int(not descending)))
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class App(object):
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def __init__(self):
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self.tree = None
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self._setup_widgets()
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self._build_tree()
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def _setup_widgets(self):
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msg = ttk.Label(wraplength="4i", justify="left", anchor="n",
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padding=(10, 2, 10, 6),
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text=("Ttk is the new Tk themed widget set. One of the widgets it "
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"includes is a tree widget, which can be configured to "
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"display multiple columns of informational data without "
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"displaying the tree itself. This is a simple way to build "
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"a listbox that has multiple columns. Clicking on the "
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"heading for a column will sort the data by that column. "
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"You can also change the width of the columns by dragging "
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"the boundary between them."))
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msg.pack(fill='x')
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container = ttk.Frame()
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container.pack(fill='both', expand=True)
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# XXX Sounds like a good support class would be one for constructing
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# a treeview with scrollbars.
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self.tree = ttk.Treeview(columns=tree_columns, show="headings")
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vsb = ttk.Scrollbar(orient="vertical", command=self.tree.yview)
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hsb = ttk.Scrollbar(orient="horizontal", command=self.tree.xview)
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self.tree.configure(yscrollcommand=vsb.set, xscrollcommand=hsb.set)
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self.tree.grid(column=0, row=0, sticky='nsew', in_=container)
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vsb.grid(column=1, row=0, sticky='ns', in_=container)
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hsb.grid(column=0, row=1, sticky='ew', in_=container)
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container.grid_columnconfigure(0, weight=1)
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container.grid_rowconfigure(0, weight=1)
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def _build_tree(self):
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for col in tree_columns:
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self.tree.heading(col, text=col.title(),
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command=lambda c=col: sortby(self.tree, c, 0))
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# XXX tkFont.Font().measure expected args are incorrect according
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# to the Tk docs
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self.tree.column(col, width=tkFont.Font().measure(col.title()))
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for item in tree_data:
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self.tree.insert('', 'end', values=item)
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# adjust columns lenghts if necessary
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for indx, val in enumerate(item):
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ilen = tkFont.Font().measure(val)
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if self.tree.column(tree_columns[indx], width=None) < ilen:
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self.tree.column(tree_columns[indx], width=ilen)
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def main():
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root = Tkinter.Tk()
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root.wm_title("Multi-Column List")
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root.wm_iconname("mclist")
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import plastik_theme
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try:
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plastik_theme.install('~/tile-themes/plastik/plastik')
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except Exception:
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import warnings
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warnings.warn("plastik theme being used without images")
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app = App()
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root.mainloop()
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if __name__ == "__main__":
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main()
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