Home | History | Annotate | Download | only in ttk 
      1 """Demo based on the demo mclist included with tk source distribution."""
      2 import Tkinter
      3 import tkFont
      4 import ttk
      5 
      6 tree_columns = ("country", "capital", "currency")
      7 tree_data = [
      8     ("Argentina",      "Buenos Aires",     "ARS"),
      9     ("Australia",      "Canberra",         "AUD"),
     10     ("Brazil",         "Brazilia",         "BRL"),
     11     ("Canada",         "Ottawa",           "CAD"),
     12     ("China",          "Beijing",          "CNY"),
     13     ("France",         "Paris",            "EUR"),
     14     ("Germany",        "Berlin",           "EUR"),
     15     ("India",          "New Delhi",        "INR"),
     16     ("Italy",          "Rome",             "EUR"),
     17     ("Japan",          "Tokyo",            "JPY"),
     18     ("Mexico",         "Mexico City",      "MXN"),
     19     ("Russia",         "Moscow",           "RUB"),
     20     ("South Africa",   "Pretoria",         "ZAR"),
     21     ("United Kingdom", "London",           "GBP"),
     22     ("United States",  "Washington, D.C.", "USD")
     23     ]
     24 
     25 def sortby(tree, col, descending):
     26     """Sort tree contents when a column is clicked on."""
     27     # grab values to sort
     28     data = [(tree.set(child, col), child) for child in tree.get_children('')]
     29 
     30     # reorder data
     31     data.sort(reverse=descending)
     32     for indx, item in enumerate(data):
     33         tree.move(item[1], '', indx)
     34 
     35     # switch the heading so that it will sort in the opposite direction
     36     tree.heading(col,
     37         command=lambda col=col: sortby(tree, col, int(not descending)))
     38 
     39 class App(object):
     40     def __init__(self):
     41         self.tree = None
     42         self._setup_widgets()
     43         self._build_tree()
     44 
     45     def _setup_widgets(self):
     46         msg = ttk.Label(wraplength="4i", justify="left", anchor="n",
     47             padding=(10, 2, 10, 6),
     48             text=("Ttk is the new Tk themed widget set. One of the widgets it "
     49                   "includes is a tree widget, which can be configured to "
     50                   "display multiple columns of informational data without "
     51                   "displaying the tree itself. This is a simple way to build "
     52                   "a listbox that has multiple columns. Clicking on the "
     53                   "heading for a column will sort the data by that column. "
     54                   "You can also change the width of the columns by dragging "
     55                   "the boundary between them."))
     56         msg.pack(fill='x')
     57 
     58         container = ttk.Frame()
     59         container.pack(fill='both', expand=True)
     60 
     61         # XXX Sounds like a good support class would be one for constructing
     62         #     a treeview with scrollbars.
     63         self.tree = ttk.Treeview(columns=tree_columns, show="headings")
     64         vsb = ttk.Scrollbar(orient="vertical", command=self.tree.yview)
     65         hsb = ttk.Scrollbar(orient="horizontal", command=self.tree.xview)
     66         self.tree.configure(yscrollcommand=vsb.set, xscrollcommand=hsb.set)
     67         self.tree.grid(column=0, row=0, sticky='nsew', in_=container)
     68         vsb.grid(column=1, row=0, sticky='ns', in_=container)
     69         hsb.grid(column=0, row=1, sticky='ew', in_=container)
     70 
     71         container.grid_columnconfigure(0, weight=1)
     72         container.grid_rowconfigure(0, weight=1)
     73 
     74     def _build_tree(self):
     75         for col in tree_columns:
     76             self.tree.heading(col, text=col.title(),
     77                 command=lambda c=col: sortby(self.tree, c, 0))
     78             # XXX tkFont.Font().measure expected args are incorrect according
     79             #     to the Tk docs
     80             self.tree.column(col, width=tkFont.Font().measure(col.title()))
     81 
     82         for item in tree_data:
     83             self.tree.insert('', 'end', values=item)
     84 
     85             # adjust columns lenghts if necessary
     86             for indx, val in enumerate(item):
     87                 ilen = tkFont.Font().measure(val)
     88                 if self.tree.column(tree_columns[indx], width=None) < ilen:
     89                     self.tree.column(tree_columns[indx], width=ilen)
     90 
     91 def main():
     92     root = Tkinter.Tk()
     93     root.wm_title("Multi-Column List")
     94     root.wm_iconname("mclist")
     95 
     96     import plastik_theme
     97     try:
     98         plastik_theme.install('~/tile-themes/plastik/plastik')
     99     except Exception:
    100         import warnings
    101         warnings.warn("plastik theme being used without images")
    102 
    103     app = App()
    104     root.mainloop()
    105 
    106 if __name__ == "__main__":
    107     main()
    108