light9 Changeset - 2ae11dc56b38

Changeset - 2ae11dc56b38

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drewp - 22 years ago 2002-07-07 15:11:48

did a nice job with Togglebutton

1 file changed with 44 insertions and 32 deletions:

light8/uihelpers.py

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light8/uihelpers.py

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 """all the tiny tk helper functions"""
+from __future__ import nested_scopes
 from Tkinter import *
 from types import StringType
 def make_frame(parent):
     f = Frame(parent, bd=0)
     f.pack(side='left')
@@ @@ -51,47 +51,59 @@ def colorfade(low, high, percent): @@
 def colortotuple(anytkobj, colorname):
     'pass any tk object and a color name, like "yellow"'
     rgb = anytkobj.winfo_rgb(colorname)
     return [v / 256 for v in rgb]
 class Togglebutton(Button):
     """works like a single radiobutton, but it's a button so the label's on the button face, not to the side"""
     def __init__(self,parent,**kw):
         if kw['variable']:
             self.variable = kw['variable']
             self.variable.trace('w',self.varchanged)
             del kw['variable']
     """works like a single radiobutton, but it's a button so the
     label's on the button face, not to the side. the optional command
     callback is called on button set, not on unset. takes a variable
     just like a checkbutton"""
     def __init__(self,parent,variable=None,command=None,**kw):
         self.oldcommand = command
         Button.__init__(self,parent,command=self.invoke,**kw)
         self._origbkg = self.cget('bg')
         self._variable = variable
         if self._variable:
             self._variable.trace('w',self._varchanged)
             self._setstate(self._variable.get())
         else:
             self.variable=None
         self.oldcommand = kw.get('command',None)
         kw['command'] = self.invoke
         Button.__init__(self,parent,**kw)
             self._setstate(0)
         self.origbkg = self.cget('bg')
         self.bind("<Return>",self.invoke)
         self.bind("<1>",self.invoke)
         self.bind("<space>",self.invoke)
         self.state=0
         if self.variable:
             self.state = self.variable.get()
         self.setstate(self.state)
     def _varchanged(self,*args):
         self._setstate(self._variable.get())
         self.bind("<Enter>",lambda ev: self.setstate)
         self.bind("<Leave>",lambda ev: self.setstate)
     def invoke(self,*ev):
         if self._variable:
             self._variable.set(not self.state)
         else:
             self._setstate(not self.state)
     def varchanged(self,*args):
         self.setstate(self.variable.get())
     def invoke(self):
         self.setstate(not self.state)
         if self.oldcommand:
         if self.oldcommand and self.state: # call command only when state goes to 1
             self.oldcommand()
         return "break"
     def setstate(self,newstate):
         self.variable.set(newstate)
     def _setstate(self,newstate):
         self.state = newstate
         if newstate: # set
             self.tk.call('tkButtonDown',self)
             self.config(bg='green')
             self.config(bg='red',relief='sunken')
         else: # unset
             self.tk.call('tkButtonUp',self)
             self.config(bg=self.origbkg)
             self.config(bg=self._origbkg,relief='raised')
         return "break"
 if __name__=='__main__':
     root=Tk()
     root.tk_focusFollowsMouse()
     iv=IntVar()
     def cb():
         print "cb!"
     t = Togglebutton(root,text="testbutton",command=cb,variable=iv)
     t.pack()
     Entry(root,textvariable=iv).pack()
     root.mainloop()

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