def __init__(self, parent=None): # an extended frame
Frame.__init__(self, parent) # on default top-level
self.pack(expand=YES, fill=BOTH) # all parts expandable
self.master.title('Python Calculator 0.1') # 6 frames plus entry
self.master.iconname("pcalc1")
self.names = {} # namespace for variables
text = StringVar()
entry(self, TOP, text)
rows = ["abcd", "0123", "4567", "89()"]
for row in rows:
frm = frame(self, TOP)
for char in row:
button(frm,
LEFT,
char,
lambda char=char: text.set(text.get() + char))
frm = frame(self, TOP)
for char in "+-*/=":
button(frm,
LEFT,
char,
lambda char=char: text.set(text.get() + ' ' + char + ' '))
frm = frame(self, BOTTOM)
button(frm, LEFT, 'eval', lambda: self.eval(text))
button(frm, LEFT, 'clear', lambda: text.set(''))
def display(self):
key = self.index[self.cursor] # show record at index cursor
self.keytext.set(key) # change key in main box
record = self.table[key] # in dict, dbm, shelf, class
if self.sameKeys(record):
self.currform.title('PyForm - Key=' + repr(key))
for (field, text) in self.currslots:
text.set(repr(record[field])) # same fields? reuse form
else: # repr(x) works like 2.X `x`
if self.currform:
self.currform.destroy() # different fields?
new = Toplevel() # replace current box
new.title('PyForm - Key=' + repr(key)) # new resizable window
new.iconname('pform')
left = frame(new, LEFT)
right = frame(new, RIGHT)
self.currslots = [] # list of (field, entry)
for field in record.keys():
label(left, TOP, repr(field)) # key,value to strings
text = StringVar() # we could sort keys here
text.set( repr(record[field]) )
entry(right, TOP, text, width=40)
self.currslots.append((field, text))
self.currform = new
new.protocol('WM_DELETE_WINDOW', lambda:0) # ignore destroy's
self.selectlist() # update listbox
def makeWidgets(self, fg, bg, font): # 7 frames plus text-entry
self.entry = entry(self, TOP, self.text) # font, color configurable
self.entry.config(font=font) # 3.0: make display larger
self.entry.config(justify=RIGHT) # 3.0: on right, not left
for row in self.Operands:
frm = frame(self, TOP)
for char in row:
button(frm, LEFT, char,
lambda op=char: self.onOperand(op),
fg=fg, bg=bg, font=font)
frm = frame(self, TOP)
for char in self.Operators:
button(frm, LEFT, char,
lambda op=char: self.onOperator(op),
fg=bg, bg=fg, font=font)
frm = frame(self, TOP)
button(frm, LEFT, 'dot ', lambda: self.onOperand('.'))
button(frm, LEFT, ' E+ ', lambda: self.text.set(self.text.get()+'E+'))
button(frm, LEFT, ' E- ', lambda: self.text.set(self.text.get()+'E-'))
button(frm, LEFT, 'cmd ', self.onMakeCmdline)
button(frm, LEFT, 'help', self.help)
button(frm, LEFT, 'quit', self.quit) # from guimixin
frm = frame(self, BOTTOM)
button(frm, LEFT, 'eval ', self.onEval)
button(frm, LEFT, 'hist ', self.onHist)
button(frm, LEFT, 'clear', self.onClear)
def makeMainBox(self):
frm = frame(self, TOP)
frm.config(bd=2)
button(frm, LEFT, 'next', self.onNext) # next in list
button(frm, LEFT, 'prev', self.onPrev) # backup in list
button(frm, LEFT, 'find', self.onFind) # find from key
frm = frame(self, TOP)
self.keytext = StringVar() # current record's key
label(frm, LEFT, 'KEY=>') # change before 'find'
entry(frm, LEFT, self.keytext)
frm = frame(self, TOP)
frm.config(bd=2)
button(frm, LEFT, 'store', self.onStore) # updated entry data
button(frm, LEFT, 'new', self.onNew) # clear fields
button(frm, LEFT, 'index', self.onMakeList) # show key list
button(frm, LEFT, 'delete', self.onDelete) # show key list
button(self, BOTTOM,'quit', self.quit) # from guimixin
def makeWidgets(self, *args):
label(self, TOP, 'PyCalc Plus - Subclass')
CalcGui.makeWidgets(self, *args)
frm = frame(self, BOTTOM)
extras = [('sqrt', 'sqrt(%s)'), ('x^2 ', '(%s)**2'),
('x^3 ', '(%s)**3'), ('1/x ', '1.0/(%s)')]
for (lab, expr) in extras:
button(frm, LEFT, lab, (lambda expr=expr: self.onExtra(expr)))
button(frm, LEFT, ' pi ', self.onPi)
def __init__(self, **args):
Toplevel.__init__(self)
label(self, TOP, 'PyCalc Plus - Container')
self.calc = CalcGui(self, **args)
frm = frame(self, BOTTOM)
extras = [('sqrt', 'sqrt(%s)'),
('x^2 ', '(%s)**2'),
('x^3 ', '(%s)**3'),
('1/x ', '1.0/(%s)')]
for (lab, expr) in extras:
button(frm, LEFT, lab, (lambda expr=expr: self.onExtra(expr)))
button(frm, LEFT, ' pi ', self.onPi)
def onMakeCmdline(self):
new = Toplevel() # new top-level window
new.title('PyCalc command line') # arbitrary Python code
frm = frame(new, TOP) # only the Entry expands
label(frm, LEFT, '>>>').pack(expand=NO)
var = StringVar()
ent = entry(frm, LEFT, var, width=40)
onButton = (lambda: self.onCmdline(var, ent))
onReturn = (lambda event: self.onCmdline(var, ent))
button(frm, RIGHT, 'Run', onButton).pack(expand=NO)
ent.bind('<Return>', onReturn)
var.set(self.text.get())
def onMakeList(self):
if self.listbox: return # already up?
new = Toplevel() # new resizable window
new.title('PyForm - Key Index') # select keys from a listbox
new.iconname('pindex')
frm = frame(new, TOP)
scroll = Scrollbar(frm)
list = Listbox(frm, bg='white')
scroll.config(command=list.yview, relief=SUNKEN)
list.config(yscrollcommand=scroll.set, relief=SUNKEN)
scroll.pack(side=RIGHT, fill=BOTH)
list.pack(side=LEFT, expand=YES, fill=BOTH) # pack last, clip first
for key in self.index: # add to list-box
list.insert(END, key) # or: sort list first
list.config(selectmode=SINGLE, setgrid=1) # select,resize modes
list.bind('<Double-1>', self.onList) # on double-clicks
self.listbox = list
if self.index and self.cursor >= 0: # highlight position
self.selectlist()
new.protocol('WM_DELETE_WINDOW', lambda:0) # ignore destroy's