| """A simple but flexible modal dialog box.""" |
| |
| |
| from Tkinter import * |
| |
| |
| class SimpleDialog: |
| |
| def __init__(self, master, |
| text='', buttons=[], default=None, cancel=None, |
| title=None, class_=None): |
| if class_: |
| self.root = Toplevel(master, class_=class_) |
| else: |
| self.root = Toplevel(master) |
| if title: |
| self.root.title(title) |
| self.root.iconname(title) |
| self.message = Message(self.root, text=text, aspect=400) |
| self.message.pack(expand=1, fill=BOTH) |
| self.frame = Frame(self.root) |
| self.frame.pack() |
| self.num = default |
| self.cancel = cancel |
| self.default = default |
| self.root.bind('<Return>', self.return_event) |
| for num in range(len(buttons)): |
| s = buttons[num] |
| b = Button(self.frame, text=s, |
| command=(lambda self=self, num=num: self.done(num))) |
| if num == default: |
| b.config(relief=RIDGE, borderwidth=8) |
| b.pack(side=LEFT, fill=BOTH, expand=1) |
| self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window) |
| self._set_transient(master) |
| |
| def _set_transient(self, master, relx=0.5, rely=0.3): |
| widget = self.root |
| widget.withdraw() # Remain invisible while we figure out the geometry |
| widget.transient(master) |
| widget.update_idletasks() # Actualize geometry information |
| if master.winfo_ismapped(): |
| m_width = master.winfo_width() |
| m_height = master.winfo_height() |
| m_x = master.winfo_rootx() |
| m_y = master.winfo_rooty() |
| else: |
| m_width = master.winfo_screenwidth() |
| m_height = master.winfo_screenheight() |
| m_x = m_y = 0 |
| w_width = widget.winfo_reqwidth() |
| w_height = widget.winfo_reqheight() |
| x = m_x + (m_width - w_width) * relx |
| y = m_y + (m_height - w_height) * rely |
| if x+w_width > master.winfo_screenwidth(): |
| x = master.winfo_screenwidth() - w_width |
| elif x < 0: |
| x = 0 |
| if y+w_height > master.winfo_screenheight(): |
| y = master.winfo_screenheight() - w_height |
| elif y < 0: |
| y = 0 |
| widget.geometry("+%d+%d" % (x, y)) |
| widget.deiconify() # Become visible at the desired location |
| |
| def go(self): |
| self.root.wait_visibility() |
| self.root.grab_set() |
| self.root.mainloop() |
| self.root.destroy() |
| return self.num |
| |
| def return_event(self, event): |
| if self.default is None: |
| self.root.bell() |
| else: |
| self.done(self.default) |
| |
| def wm_delete_window(self): |
| if self.cancel is None: |
| self.root.bell() |
| else: |
| self.done(self.cancel) |
| |
| def done(self, num): |
| self.num = num |
| self.root.quit() |
| |
| |
| if __name__ == '__main__': |
| |
| def test(): |
| root = Tk() |
| def doit(root=root): |
| d = SimpleDialog(root, |
| text="This is a test dialog. " |
| "Would this have been an actual dialog, " |
| "the buttons below would have been glowing " |
| "in soft pink light.\n" |
| "Do you believe this?", |
| buttons=["Yes", "No", "Cancel"], |
| default=0, |
| cancel=2, |
| title="Test Dialog") |
| print d.go() |
| t = Button(root, text='Test', command=doit) |
| t.pack() |
| q = Button(root, text='Quit', command=t.quit) |
| q.pack() |
| t.mainloop() |
| |
| test() |
