/
gret_tkinter_widgets.py
93 lines (78 loc) · 2.79 KB
/
gret_tkinter_widgets.py
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from tkinter import Frame, Label, Entry, Scale, VERTICAL
def validate_for_float(p):
"""
Validation function for better control of entries.
:param p:
:return:
"""
if p:
try:
float(p)
return True
except ValueError:
return False
else:
# Causes ValueError, but allows deleting all chars from entry
return True
def validate_for_int(p):
"""
Validation function for better control of entries.
:param p:
:return:
"""
if p:
try:
int(p)
return True
except ValueError:
return False
else:
# Causes ValueError, but allows deleting all chars from entry
return True
class LabeledEntry(Frame):
"""
LabelEntry - Supporting Frame of simple entries with labels
Validation for INT and FLOAT included.
"""
def __init__(self, parent, text="", validate_for='float', value=0.0):
Frame.__init__(self, parent)
self.main_bg = parent['bg']
self.config(bg=self.main_bg)
self.VALIDATE_FLOAT = (self.register(validate_for_float), '%P')
self.VALIDATE_INT = (self.register(validate_for_int), '%P')
if validate_for == 'int':
validate_for = self.VALIDATE_INT
elif validate_for == 'float':
validate_for = self.VALIDATE_FLOAT
else:
# allow no validation at all
validate_for = None
label = Label(self, bg=self.main_bg, text=text)
label.grid(row=0, column=0, padx=5, pady=5, sticky='e')
self.entry = Entry(self, width=5, validate='key', validatecommand=validate_for)
self.entry.grid(row=0, column=1, padx=5, pady=5, sticky='we')
self.entry.insert(0, value)
def get(self):
return self.entry.get()
class LabeledVerticalScale(Frame):
"""
LabeledVerticalScale - Supporting Frame of vertical slider with labels
"""
def __init__(self, parent, text="", value=0.0, slider_bind_func=None):
Frame.__init__(self, parent)
self.main_bg = parent['bg']
self.config(bg=self.main_bg)
self.slider_events = ["<ButtonRelease-1>",
"<ButtonRelease-3>"]
self.label = Label(self, text=text)
self.label.grid(row=0, column=0, padx=5, pady=3, sticky='s')
self.slider = Scale(self, from_=1, to=0, orient=VERTICAL,
resolution=0.01, length=200, width=18)
self.slider.grid(row=1, column=0, padx=5, pady=5, sticky='n')
if slider_bind_func is not None:
for event in self.slider_events:
self.slider.bind(event, slider_bind_func)
self.slider.set(value)
self.label.config(bg=self.slider['bg'])
def get(self):
return self.slider.get()