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