Editeur/tooltip.py

   1 """
   2     Ce module propose la classe TOOLTIP pour
   3     mettre en oeuvre les bulles d'aide
   4 """
   5
   6 import Tkinter
   7
   8 class TOOLTIP:
   9     def __init__(self,widget):
  10         self.widget=widget
  11         self.text = None
  12         self.timer = None
  13         self.tooltip = None
  14         self.label = None
  15         self.bindings = []
  16         self.bindings.append(self.widget.bind("<Enter>", self._enter))
  17         self.bindings.append(self.widget.bind("<Leave>", self._leave))
  18         self.bindings.append(self.widget.bind("<ButtonPress>", self._leave))
  19         # user overrideable settings
  20         self.time = 1000                    # milliseconds
  21         self.relief = Tkinter.SOLID
  22         self.justify = Tkinter.LEFT
  23         self.fg = "#000000"
  24         self.bg = "#ffffe0"
  25         self.xoffset = 20
  26         self.yoffset = 1
  27
  28     def setText(self, text):
  29         self.text = text
  30
  31     def _unbind(self):
  32         if self.bindings and self.widget:
  33             self.widget.unbind("<Enter>", self.bindings[0])
  34             self.widget.unbind("<Leave>", self.bindings[1])
  35             self.widget.unbind("<ButtonPress>", self.bindings[2])
  36             self.bindings = []
  37
  38     def destroy(self):
  39         self._unbind()
  40         self._leave()
  41
  42     def _enter(self, *event):
  43         after_cancel(self.timer)
  44         self.timer = after(self.widget, self.time, self._showTip)
  45
  46     def _leave(self, *event):
  47         after_cancel(self.timer)
  48         self.timer = None
  49         if self.tooltip:
  50             self.label.destroy()
  51             destruct(self.label)
  52             self.label = None
  53             self.tooltip.destroy()
  54             destruct(self.tooltip)
  55             self.tooltip = None
  56
  57     def _showTip(self):
  58         if self.tooltip or not self.text:
  59             return
  60         c = self.widget.__class__
  61         if c in (Tkinter.Button,):
  62             if self.widget["state"] == Tkinter.DISABLED:
  63                 return
  64         x = self.widget.winfo_rootx()
  65         y = self.widget.winfo_rooty() + self.widget.winfo_height()
  66         x = x + self.xoffset
  67         y = y + self.yoffset
  68         self.tooltip = Tkinter.Toplevel()
  69         self.tooltip.wm_iconify()
  70         self.tooltip.wm_overrideredirect(1)
  71         self.tooltip.wm_protocol("WM_DELETE_WINDOW", self.destroy)
  72         self.label = Tkinter.Label(self.tooltip, text=self.text,
  73                          relief=self.relief, justify=self.justify,
  74                          fg=self.fg, bg=self.bg, bd=1, takefocus=0)
  75         self.label.pack(ipadx=1, ipady=1)
  76         self.tooltip.wm_geometry("%+d%+d" % (x, y))
  77         self.tooltip.wm_deiconify()
  78