08b5386140
When closing a popup window when the mouse leave the area (default behaviour, unfortunately), the main "show()" got stuck in an infinite loop. Fix that by setting running to False when exiting. fixes #844
114 lines
2.9 KiB
Python
114 lines
2.9 KiB
Python
"""Pop-up menus."""
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import logging
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import tkinter as tk
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import functools
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class menu(object):
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"""Draws a hierarchical popup menu
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:param parent: If given, this menu is a leave of the "parent" menu
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:param leave: If set to True, close this menu when mouse leaves the area (defaults to True)
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"""
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def __init__(self, parent=None, leave=True):
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self.running = True
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self.parent = parent
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self._root = parent.root() if parent else tk.Tk()
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self._root.withdraw()
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self._menu = tk.Menu(self._root, tearoff=0)
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self._menu.bind("<FocusOut>", self.__on_focus_out)
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if leave:
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self._menu.bind("<Leave>", self.__on_focus_out)
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elif not parent:
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self.add_menuitem("close", self.__on_focus_out)
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self.add_separator()
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self._menu.bind("<ButtonRelease-1>", self.release)
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"""Returns the root node of this menu
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:return: root node
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"""
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def root(self):
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return self._root
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"""Returns the menu
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:return: menu
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"""
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def menu(self):
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return self._menu
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def __on_focus_out(self, event=None):
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self.running = False
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self._root.destroy()
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def __on_click(self, callback):
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self._root.destroy()
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callback()
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def release(self, event=None):
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self.running=False
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if self.parent:
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self.parent.release(event)
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"""Adds a cascading submenu to the current menu
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:param menuitem: label to display for the submenu
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:param submenu: submenu to show
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"""
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def add_cascade(self, menuitem, submenu):
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self._menu.add_cascade(label=menuitem, menu=submenu.menu())
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"""Adds an item to the current menu
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:param menuitem: label to display for the entry
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:param callback: method to invoke on click
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"""
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def add_menuitem(self, menuitem, callback):
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self._menu.add_command(
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label=menuitem, command=functools.partial(self.__on_click, callback)
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)
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"""Adds a separator to the menu in the current location"""
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def add_separator(self):
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self._menu.add_separator()
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"""Shows this menu
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:param event: i3wm event that triggered the menu (dict that contains "x" and "y" fields)
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:param offset_x: x-axis offset from mouse position for the menu (defaults to 0)
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:param offset_y: y-axis offset from mouse position for the menu (defaults to 0)
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"""
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def show(self, event, offset_x=0, offset_y=0):
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try:
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self._menu.tk_popup(event["x"] + offset_x, event["y"] + offset_y)
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finally:
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self._menu.grab_release()
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while self.running == True:
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try:
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self._root.update_idletasks()
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self._root.update()
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except:
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self.running = False
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try:
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self._root.destroy()
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except:
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pass
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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