268 lines
12 KiB
Python
268 lines
12 KiB
Python
"""
|
|
Dialog for building Tkinter accelerator key bindings
|
|
"""
|
|
from Tkinter import *
|
|
import tkMessageBox
|
|
import string, os
|
|
|
|
class GetKeysDialog(Toplevel):
|
|
def __init__(self,parent,title,action,currentKeySequences):
|
|
"""
|
|
action - string, the name of the virtual event these keys will be
|
|
mapped to
|
|
currentKeys - list, a list of all key sequence lists currently mapped
|
|
to virtual events, for overlap checking
|
|
"""
|
|
Toplevel.__init__(self, parent)
|
|
self.configure(borderwidth=5)
|
|
self.resizable(height=FALSE,width=FALSE)
|
|
self.title(title)
|
|
self.transient(parent)
|
|
self.grab_set()
|
|
self.protocol("WM_DELETE_WINDOW", self.Cancel)
|
|
self.parent = parent
|
|
self.action=action
|
|
self.currentKeySequences=currentKeySequences
|
|
self.result=''
|
|
self.keyString=StringVar(self)
|
|
self.keyString.set('')
|
|
self.SetModifiersForPlatform() # set self.modifiers, self.modifier_label
|
|
self.modifier_vars = []
|
|
for modifier in self.modifiers:
|
|
variable = StringVar(self)
|
|
variable.set('')
|
|
self.modifier_vars.append(variable)
|
|
self.advanced = False
|
|
self.CreateWidgets()
|
|
self.LoadFinalKeyList()
|
|
self.withdraw() #hide while setting geometry
|
|
self.update_idletasks()
|
|
self.geometry("+%d+%d" %
|
|
((parent.winfo_rootx()+((parent.winfo_width()/2)
|
|
-(self.winfo_reqwidth()/2)),
|
|
parent.winfo_rooty()+((parent.winfo_height()/2)
|
|
-(self.winfo_reqheight()/2)) )) ) #centre dialog over parent
|
|
self.deiconify() #geometry set, unhide
|
|
self.wait_window()
|
|
|
|
def CreateWidgets(self):
|
|
frameMain = Frame(self,borderwidth=2,relief=SUNKEN)
|
|
frameMain.pack(side=TOP,expand=TRUE,fill=BOTH)
|
|
frameButtons=Frame(self)
|
|
frameButtons.pack(side=BOTTOM,fill=X)
|
|
self.buttonOK = Button(frameButtons,text='OK',
|
|
width=8,command=self.OK)
|
|
self.buttonOK.grid(row=0,column=0,padx=5,pady=5)
|
|
self.buttonCancel = Button(frameButtons,text='Cancel',
|
|
width=8,command=self.Cancel)
|
|
self.buttonCancel.grid(row=0,column=1,padx=5,pady=5)
|
|
self.frameKeySeqBasic = Frame(frameMain)
|
|
self.frameKeySeqAdvanced = Frame(frameMain)
|
|
self.frameControlsBasic = Frame(frameMain)
|
|
self.frameHelpAdvanced = Frame(frameMain)
|
|
self.frameKeySeqAdvanced.grid(row=0,column=0,sticky=NSEW,padx=5,pady=5)
|
|
self.frameKeySeqBasic.grid(row=0,column=0,sticky=NSEW,padx=5,pady=5)
|
|
self.frameKeySeqBasic.lift()
|
|
self.frameHelpAdvanced.grid(row=1,column=0,sticky=NSEW,padx=5)
|
|
self.frameControlsBasic.grid(row=1,column=0,sticky=NSEW,padx=5)
|
|
self.frameControlsBasic.lift()
|
|
self.buttonLevel = Button(frameMain,command=self.ToggleLevel,
|
|
text='Advanced Key Binding Entry >>')
|
|
self.buttonLevel.grid(row=2,column=0,stick=EW,padx=5,pady=5)
|
|
labelTitleBasic = Label(self.frameKeySeqBasic,
|
|
text="New keys for '"+self.action+"' :")
|
|
labelTitleBasic.pack(anchor=W)
|
|
labelKeysBasic = Label(self.frameKeySeqBasic,justify=LEFT,
|
|
textvariable=self.keyString,relief=GROOVE,borderwidth=2)
|
|
labelKeysBasic.pack(ipadx=5,ipady=5,fill=X)
|
|
self.modifier_checkbuttons = {}
|
|
column = 0
|
|
for modifier, variable in zip(self.modifiers, self.modifier_vars):
|
|
label = self.modifier_label.get(modifier, modifier)
|
|
check=Checkbutton(self.frameControlsBasic,
|
|
command=self.BuildKeyString,
|
|
text=label,variable=variable,onvalue=modifier,offvalue='')
|
|
check.grid(row=0,column=column,padx=2,sticky=W)
|
|
self.modifier_checkbuttons[modifier] = check
|
|
column += 1
|
|
labelFnAdvice=Label(self.frameControlsBasic,justify=LEFT,
|
|
text=\
|
|
"Select the desired modifier keys\n"+
|
|
"above, and the final key from the\n"+
|
|
"list on the right.\n\n" +
|
|
"Use upper case Symbols when using\n" +
|
|
"the Shift modifier. (Letters will be\n" +
|
|
"converted automatically.)")
|
|
labelFnAdvice.grid(row=1,column=0,columnspan=4,padx=2,sticky=W)
|
|
self.listKeysFinal=Listbox(self.frameControlsBasic,width=15,height=10,
|
|
selectmode=SINGLE)
|
|
self.listKeysFinal.bind('<ButtonRelease-1>',self.FinalKeySelected)
|
|
self.listKeysFinal.grid(row=0,column=4,rowspan=4,sticky=NS)
|
|
scrollKeysFinal=Scrollbar(self.frameControlsBasic,orient=VERTICAL,
|
|
command=self.listKeysFinal.yview)
|
|
self.listKeysFinal.config(yscrollcommand=scrollKeysFinal.set)
|
|
scrollKeysFinal.grid(row=0,column=5,rowspan=4,sticky=NS)
|
|
self.buttonClear=Button(self.frameControlsBasic,
|
|
text='Clear Keys',command=self.ClearKeySeq)
|
|
self.buttonClear.grid(row=2,column=0,columnspan=4)
|
|
labelTitleAdvanced = Label(self.frameKeySeqAdvanced,justify=LEFT,
|
|
text="Enter new binding(s) for '"+self.action+"' :\n"+
|
|
"(These bindings will not be checked for validity!)")
|
|
labelTitleAdvanced.pack(anchor=W)
|
|
self.entryKeysAdvanced=Entry(self.frameKeySeqAdvanced,
|
|
textvariable=self.keyString)
|
|
self.entryKeysAdvanced.pack(fill=X)
|
|
labelHelpAdvanced=Label(self.frameHelpAdvanced,justify=LEFT,
|
|
text="Key bindings are specified using Tkinter keysyms as\n"+
|
|
"in these samples: <Control-f>, <Shift-F2>, <F12>,\n"
|
|
"<Control-space>, <Meta-less>, <Control-Alt-Shift-X>.\n"
|
|
"Upper case is used when the Shift modifier is present!\n\n" +
|
|
"'Emacs style' multi-keystroke bindings are specified as\n" +
|
|
"follows: <Control-x><Control-y>, where the first key\n" +
|
|
"is the 'do-nothing' keybinding.\n\n" +
|
|
"Multiple separate bindings for one action should be\n"+
|
|
"separated by a space, eg., <Alt-v> <Meta-v>." )
|
|
labelHelpAdvanced.grid(row=0,column=0,sticky=NSEW)
|
|
|
|
def SetModifiersForPlatform(self):
|
|
"""Determine list of names of key modifiers for this platform.
|
|
|
|
The names are used to build Tk bindings -- it doesn't matter if the
|
|
keyboard has these keys, it matters if Tk understands them. The
|
|
order is also important: key binding equality depends on it, so
|
|
config-keys.def must use the same ordering.
|
|
"""
|
|
import sys
|
|
if sys.platform == 'darwin' and sys.argv[0].count('.app'):
|
|
self.modifiers = ['Shift', 'Control', 'Option', 'Command']
|
|
else:
|
|
self.modifiers = ['Control', 'Alt', 'Shift']
|
|
self.modifier_label = {'Control': 'Ctrl'} # short name
|
|
|
|
def ToggleLevel(self):
|
|
if self.buttonLevel.cget('text')[:8]=='Advanced':
|
|
self.ClearKeySeq()
|
|
self.buttonLevel.config(text='<< Basic Key Binding Entry')
|
|
self.frameKeySeqAdvanced.lift()
|
|
self.frameHelpAdvanced.lift()
|
|
self.entryKeysAdvanced.focus_set()
|
|
self.advanced = True
|
|
else:
|
|
self.ClearKeySeq()
|
|
self.buttonLevel.config(text='Advanced Key Binding Entry >>')
|
|
self.frameKeySeqBasic.lift()
|
|
self.frameControlsBasic.lift()
|
|
self.advanced = False
|
|
|
|
def FinalKeySelected(self,event):
|
|
self.BuildKeyString()
|
|
|
|
def BuildKeyString(self):
|
|
keyList = modifiers = self.GetModifiers()
|
|
finalKey = self.listKeysFinal.get(ANCHOR)
|
|
if finalKey:
|
|
finalKey = self.TranslateKey(finalKey, modifiers)
|
|
keyList.append(finalKey)
|
|
self.keyString.set('<' + string.join(keyList,'-') + '>')
|
|
|
|
def GetModifiers(self):
|
|
modList = [variable.get() for variable in self.modifier_vars]
|
|
return filter(None, modList)
|
|
|
|
def ClearKeySeq(self):
|
|
self.listKeysFinal.select_clear(0,END)
|
|
self.listKeysFinal.yview(MOVETO, '0.0')
|
|
for variable in self.modifier_vars:
|
|
variable.set('')
|
|
self.keyString.set('')
|
|
|
|
def LoadFinalKeyList(self):
|
|
#these tuples are also available for use in validity checks
|
|
self.functionKeys=('F1','F2','F2','F4','F5','F6','F7','F8','F9',
|
|
'F10','F11','F12')
|
|
self.alphanumKeys=tuple(string.ascii_lowercase+string.digits)
|
|
self.punctuationKeys=tuple('~!@#%^&*()_-+={}[]|;:,.<>/?')
|
|
self.whitespaceKeys=('Tab','Space','Return')
|
|
self.editKeys=('BackSpace','Delete','Insert')
|
|
self.moveKeys=('Home','End','Page Up','Page Down','Left Arrow',
|
|
'Right Arrow','Up Arrow','Down Arrow')
|
|
#make a tuple of most of the useful common 'final' keys
|
|
keys=(self.alphanumKeys+self.punctuationKeys+self.functionKeys+
|
|
self.whitespaceKeys+self.editKeys+self.moveKeys)
|
|
self.listKeysFinal.insert(END, *keys)
|
|
|
|
def TranslateKey(self, key, modifiers):
|
|
"Translate from keycap symbol to the Tkinter keysym"
|
|
translateDict = {'Space':'space',
|
|
'~':'asciitilde','!':'exclam','@':'at','#':'numbersign',
|
|
'%':'percent','^':'asciicircum','&':'ampersand','*':'asterisk',
|
|
'(':'parenleft',')':'parenright','_':'underscore','-':'minus',
|
|
'+':'plus','=':'equal','{':'braceleft','}':'braceright',
|
|
'[':'bracketleft',']':'bracketright','|':'bar',';':'semicolon',
|
|
':':'colon',',':'comma','.':'period','<':'less','>':'greater',
|
|
'/':'slash','?':'question','Page Up':'Prior','Page Down':'Next',
|
|
'Left Arrow':'Left','Right Arrow':'Right','Up Arrow':'Up',
|
|
'Down Arrow': 'Down', 'Tab':'Tab'}
|
|
if key in translateDict.keys():
|
|
key = translateDict[key]
|
|
if 'Shift' in modifiers and key in string.ascii_lowercase:
|
|
key = key.upper()
|
|
key = 'Key-' + key
|
|
return key
|
|
|
|
def OK(self, event=None):
|
|
if self.advanced or self.KeysOK(): # doesn't check advanced string yet
|
|
self.result=self.keyString.get()
|
|
self.destroy()
|
|
|
|
def Cancel(self, event=None):
|
|
self.result=''
|
|
self.destroy()
|
|
|
|
def KeysOK(self):
|
|
'''Validity check on user's 'basic' keybinding selection.
|
|
|
|
Doesn't check the string produced by the advanced dialog because
|
|
'modifiers' isn't set.
|
|
|
|
'''
|
|
keys = self.keyString.get()
|
|
keys.strip()
|
|
finalKey = self.listKeysFinal.get(ANCHOR)
|
|
modifiers = self.GetModifiers()
|
|
# create a key sequence list for overlap check:
|
|
keySequence = keys.split()
|
|
keysOK = False
|
|
title = 'Key Sequence Error'
|
|
if not keys:
|
|
tkMessageBox.showerror(title=title, parent=self,
|
|
message='No keys specified.')
|
|
elif not keys.endswith('>'):
|
|
tkMessageBox.showerror(title=title, parent=self,
|
|
message='Missing the final Key')
|
|
elif (not modifiers
|
|
and finalKey not in self.functionKeys + self.moveKeys):
|
|
tkMessageBox.showerror(title=title, parent=self,
|
|
message='No modifier key(s) specified.')
|
|
elif (modifiers == ['Shift']) \
|
|
and (finalKey not in
|
|
self.functionKeys + self.moveKeys + ('Tab', 'Space')):
|
|
msg = 'The shift modifier by itself may not be used with'\
|
|
' this key symbol.'
|
|
tkMessageBox.showerror(title=title, parent=self, message=msg)
|
|
elif keySequence in self.currentKeySequences:
|
|
msg = 'This key combination is already in use.'
|
|
tkMessageBox.showerror(title=title, parent=self, message=msg)
|
|
else:
|
|
keysOK = True
|
|
return keysOK
|
|
|
|
if __name__ == '__main__':
|
|
#test the dialog
|
|
root=Tk()
|
|
def run():
|
|
keySeq=''
|
|
dlg=GetKeysDialog(root,'Get Keys','find-again',[])
|
|
print dlg.result
|
|
Button(root,text='Dialog',command=run).pack()
|
|
root.mainloop()
|