class MarkovDemo(Frame):
"MarkovDemo(master=None, **kw) -> MarkovDemo instance"
TEXT = dict(height=2, width=46, wrap=WORD) # Text Options
GRID = dict(padx=5, pady=5) # Grid Options
# Initialize a MarkovDemo instance with a GUI for interaction.
def __init__(self, master=None, **kw):
"Initialize the MarkovDemo instance's widgets and settings."
super().__init__(master, **kw)
self.build_widgets()
self.place_widgets()
self.setup_widgets()
self.grid_rowconfigure(2, weight=1)
self.grid_rowconfigure(3, weight=1)
self.grid_columnconfigure(0, weight=1)
self.key = self.primer = None
def build_widgets(self):
"Build the various widgets that will be used in the program."
# Create processing frame widgets.
self.processing_frame = LabelFrame(self, text='Processing Mode:')
self.mode_var = StringVar(self, 'encode')
self.decode_button = Radiobutton(self.processing_frame,
text='Decode Cipher-Text',
command=self.handle_radiobuttons,
value='decode',
variable=self.mode_var)
self.encode_button = Radiobutton(self.processing_frame,
text='Encode Plain-Text',
command=self.handle_radiobuttons,
value='encode',
variable=self.mode_var)
self.freeze_var = BooleanVar(self, False)
self.freeze_button = Checkbutton(self.processing_frame,
text='Freeze Key & Primer',
command=self.handle_checkbutton,
offvalue=False,
onvalue=True,
variable=self.freeze_var)
# Create encoding frame widgets.
self.encoding_frame = LabelFrame(self, text='Encoding Options:')
self.chain_size_label = Label(self.encoding_frame, text='Chain Size:')
self.chain_size_entry = Entry(self.encoding_frame)
self.plain_text_label = Label(self.encoding_frame, text='Plain-Text:')
self.plain_text_entry = Entry(self.encoding_frame)
# Create input frame widgets.
self.input_frame = LabelFrame(self, text='Input Area:')
self.input_text = ScrolledText(self.input_frame, **self.TEXT)
# Create output frame widgets.
self.output_frame = LabelFrame(self, text='Output Area:')
self.output_text = ScrolledText(self.output_frame, **self.TEXT)
def place_widgets(self):
"Place the widgets where they belong in the MarkovDemo frame."
# Locate processing frame widgets.
self.processing_frame.grid(sticky=EW, **self.GRID)
self.decode_button.grid(row=0, column=0, **self.GRID)
self.encode_button.grid(row=0, column=1, **self.GRID)
self.freeze_button.grid(row=0, column=2, **self.GRID)
# Locate encoding frame widgets.
self.encoding_frame.grid(sticky=EW, **self.GRID)
self.chain_size_label.grid(row=0, column=0, sticky=W, **self.GRID)
self.chain_size_entry.grid(row=0, column=1, sticky=EW, **self.GRID)
self.plain_text_label.grid(row=1, column=0, sticky=W, **self.GRID)
self.plain_text_entry.grid(row=1, column=1, sticky=EW, **self.GRID)
self.encoding_frame.grid_columnconfigure(1, weight=1)
# Locate input frame widgets.
self.input_frame.grid(sticky=NSEW, **self.GRID)
self.input_text.grid(sticky=NSEW, **self.GRID)
self.input_frame.grid_rowconfigure(0, weight=1)
self.input_frame.grid_columnconfigure(0, weight=1)
# Locate output frame widgets.
self.output_frame.grid(sticky=NSEW, **self.GRID)
self.output_text.grid(sticky=NSEW, **self.GRID)
self.output_frame.grid_rowconfigure(0, weight=1)
self.output_frame.grid_columnconfigure(0, weight=1)
def setup_widgets(self):
"Setup each widget's configuration for the events they handle."
self.input_text.bind('<Key>', self.handle_key_events)
self.input_text.bind('<Control-Key-a>', self.handle_control_a)
self.input_text.bind('<Control-Key-/>', lambda event: 'break')
self.output_text['state'] = DISABLED
self.output_text.bind('<Control-Key-a>', self.handle_control_a)
self.output_text.bind('<Control-Key-/>', lambda event: 'break')
########################################################################
# Take care of any special event needing dedicated processing.
def handle_radiobuttons(self):
"Change the interface based on the encoding / decoding setting."
if self.encrypting:
self.freeze_button.grid()
if not self.freeze_var.get():
self.encoding_frame.grid()
else:
self.freeze_button.grid_remove()
if not self.freeze_var.get():
self.encoding_frame.grid_remove()
self.handle_key_events(None)
def handle_checkbutton(self):
"Change the interface based on the key / primer freeze setting."
if self.freeze_var.get():
self.encoding_frame.grid_remove()
else:
self.encoding_frame.grid()
def handle_key_events(self, event):
"Schedule refreshing the output area after an input area event."
if event is None or event.char and event.state | 0o11 == 0o11:
self.after_idle(self.refresh)
@staticmethod
def handle_control_a(event):
"Select all text in the widget associated with the given event."
event.widget.tag_add(SEL, 1.0, END + '-1c')
return 'break'
########################################################################
# Handle interface's updates when either encoding or decoding.
def refresh(self):
"Refresh the output based on the value of the input."
text = self.input_text.get(1.0, END + '-1c')
if not text:
self.output = text
elif self.encrypting:
self.encode(text)
else:
self.decode(text)
def output(self, value):
"Set the text in the output area to the string value."
self.output_text['state'] = NORMAL
self.output_text.delete(1.0, END)
self.output_text.insert(END, value)
if self.encrypting and self.freeze_var.get():
self.output_text.see(END)
self.output_text['state'] = DISABLED
output = property(fset=output, doc='Output area property.')
@property
def chain_size(self):
"Chain size for the Markov chains used when encrypting."
try:
value = ast.literal_eval(self.chain_size_entry.get())
assert isinstance(value, int) and 2 <= value <= 256
return value
except:
self.chain_size_entry.delete(0, END)
self.chain_size_entry.insert(0, '2')
return 2
@property
def plain_text(self):
"Plain text or ignored characters in encryption process."
try:
value = self.repr_to_obj(self.plain_text_entry.get(), '')
assert isinstance(value, str)
return value
except:
self.plain_text_entry.delete(0, END)
return ''
########################################################################
# Encrypt a string for display in the interface's output area.
def encode(self, string):
"Encode the string and show the cipher-text in the output."
try:
cipher = self.build_cipher(string)
except ValueError:
self.output = ''
except:
self.output = traceback.format_exc()
else:
self.output = self.build_header() + '\n\n' + cipher
def build_cipher(self, string):
"Build cipher-text based on plain-text and return answer."
if self.key and self.freeze_var.get():
cipher, primer = me.encrypt_str(string, self.key, self.primer)
else:
args = string, self.chain_size, self.plain_text
cipher, self.key, self.primer = me.auto_encrypt_str(*args)
return cipher
def build_header(self):
"Build header from key and primer values in current use."
header = '\n'.join(map(self.bytes_to_repr, self.key.data))
header += '\n' + self.bytes_to_repr(self.primer.data)
return header
########################################################################
# Decrypt a string for display in the interface's output area.
def decode(self, string):
"Decode encrypted message and display plain-text in output."
try:
cipher = self.extract_keys(string)
text = self.extract_text(cipher)
except ValueError:
self.output = ''
except:
self.output = traceback.format_exc()
else:
self.output = text
def extract_keys(self, string):
"Extract keys to decryption and return the cipher-text area."
header, cipher = string.split('\n\n', 1)
*key, primer = map(self.repr_to_obj, header.split('\n'))
self.key, self.primer = me.Key(tuple(key)), me.Primer(primer)
return cipher
def extract_text(self, string):
"Extract text message from string using built key and primer."
text, primer = me.decrypt_str(string, self.key, self.primer)
return text
########################################################################
# Provide some special methods to simplify the program's code.
@property
def encrypting(self):
"Encrypting boolean stating current operations mode."
return {'encode': True, 'decode': False}[self.mode_var.get()]
@staticmethod
def bytes_to_repr(obj):
"Convert bytes object into suitable representation."
if not isinstance(obj, bytes):
raise TypeError('Object must be a bytes instance!')
return repr(obj)[2:-1]
@staticmethod
def repr_to_obj(string, prefix='b'):
"Convert representation into an equivalent object."
for template in '{}"{}"', "{}'{}'":
try:
return ast.literal_eval(template.format(prefix, string))
except:
pass
raise ValueError('Cannot convert {!r} to object!'.format(string))
@classmethod
def main(cls):
"Create context for demo and run a test instance."
NoDefaultRoot()
root = Tk()
root.minsize(420, 330)
root.title('Markov Demo 2')
test = cls(root)
test.grid(sticky=NSEW)
root.grid_rowconfigure(0, weight=1)
root.grid_columnconfigure(0, weight=1)
root.mainloop()
class MarkovDemo(Frame):
"MarkovDemo(master=None, **kw) -> MarkovDemo instance"
TEXT = dict(height=2, width=46, wrap=WORD) # Text Options
GRID = dict(padx=5, pady=5) # Grid Options
# Initialize a MarkovDemo instance with a GUI for interaction.
def __init__(self, master=None, **kw):
"Initialize the MarkovDemo instance's widgets and settings."
super().__init__(master, **kw)
self.build_widgets()
self.place_widgets()
self.setup_widgets()
self.grid_rowconfigure(2, weight=1)
self.grid_rowconfigure(3, weight=1)
self.grid_columnconfigure(0, weight=1)
self.key = self.primer = None
def build_widgets(self):
"Build the various widgets that will be used in the program."
# Create processing frame widgets.
self.processing_frame = LabelFrame(self, text='Processing Mode:')
self.mode_var = StringVar(self, 'encode')
self.decode_button = Radiobutton(self.processing_frame,
text='Decode Cipher-Text',
command=self.handle_radiobuttons,
value='decode',
variable=self.mode_var)
self.encode_button = Radiobutton(self.processing_frame,
text='Encode Plain-Text',
command=self.handle_radiobuttons,
value='encode',
variable=self.mode_var)
self.freeze_var = BooleanVar(self, False)
self.freeze_button = Checkbutton(self.processing_frame,
text='Freeze Key & Primer',
command=self.handle_checkbutton,
offvalue=False,
onvalue=True,
variable=self.freeze_var)
# Create encoding frame widgets.
self.encoding_frame = LabelFrame(self, text='Encoding Options:')
self.chain_size_label = Label(self.encoding_frame, text='Chain Size:')
self.chain_size_entry = Entry(self.encoding_frame)
self.plain_text_label = Label(self.encoding_frame, text='Plain-Text:')
self.plain_text_entry = Entry(self.encoding_frame)
# Create input frame widgets.
self.input_frame = LabelFrame(self, text='Input Area:')
self.input_text = ScrolledText(self.input_frame, **self.TEXT)
# Create output frame widgets.
self.output_frame = LabelFrame(self, text='Output Area:')
self.output_text = ScrolledText(self.output_frame, **self.TEXT)
def place_widgets(self):
"Place the widgets where they belong in the MarkovDemo frame."
# Locate processing frame widgets.
self.processing_frame.grid(sticky=EW, **self.GRID)
self.decode_button.grid(row=0, column=0, **self.GRID)
self.encode_button.grid(row=0, column=1, **self.GRID)
self.freeze_button.grid(row=0, column=2, **self.GRID)
# Locate encoding frame widgets.
self.encoding_frame.grid(sticky=EW, **self.GRID)
self.chain_size_label.grid(row=0, column=0, sticky=W, **self.GRID)
self.chain_size_entry.grid(row=0, column=1, sticky=EW, **self.GRID)
self.plain_text_label.grid(row=1, column=0, sticky=W, **self.GRID)
self.plain_text_entry.grid(row=1, column=1, sticky=EW, **self.GRID)
self.encoding_frame.grid_columnconfigure(1, weight=1)
# Locate input frame widgets.
self.input_frame.grid(sticky=NSEW, **self.GRID)
self.input_text.grid(sticky=NSEW, **self.GRID)
self.input_frame.grid_rowconfigure(0, weight=1)
self.input_frame.grid_columnconfigure(0, weight=1)
# Locate output frame widgets.
self.output_frame.grid(sticky=NSEW, **self.GRID)
self.output_text.grid(sticky=NSEW, **self.GRID)
self.output_frame.grid_rowconfigure(0, weight=1)
self.output_frame.grid_columnconfigure(0, weight=1)
def setup_widgets(self):
"Setup each widget's configuration for the events they handle."
self.input_text.bind('<Key>', self.handle_key_events)
self.input_text.bind('<Control-Key-a>', self.handle_control_a)
self.input_text.bind('<Control-Key-/>', lambda event: 'break')
self.output_text['state'] = DISABLED
self.output_text.bind('<Control-Key-a>', self.handle_control_a)
self.output_text.bind('<Control-Key-/>', lambda event: 'break')
########################################################################
# Take care of any special event needing dedicated processing.
def handle_radiobuttons(self):
"Change the interface based on the encoding / decoding setting."
if self.encrypting:
self.freeze_button.grid()
if not self.freeze_var.get():
self.encoding_frame.grid()
else:
self.freeze_button.grid_remove()
if not self.freeze_var.get():
self.encoding_frame.grid_remove()
self.handle_key_events(None)
def handle_checkbutton(self):
"Change the interface based on the key / primer freeze setting."
if self.freeze_var.get():
self.encoding_frame.grid_remove()
else:
self.encoding_frame.grid()
def handle_key_events(self, event):
"Schedule refreshing the output area after an input area event."
if event is None or event.char and event.state | 0o11 == 0o11:
self.after_idle(self.refresh)
@staticmethod
def handle_control_a(event):
"Select all text in the widget associated with the given event."
event.widget.tag_add(SEL, 1.0, END + '-1c')
return 'break'
########################################################################
# Handle interface's updates when either encoding or decoding.
def refresh(self):
"Refresh the output based on the value of the input."
text = self.input_text.get(1.0, END + '-1c')
if not text:
self.output = text
elif self.encrypting:
self.encode(text)
else:
self.decode(text)
def output(self, value):
"Set the text in the output area to the string value."
self.output_text['state'] = NORMAL
self.output_text.delete(1.0, END)
self.output_text.insert(END, value)
if self.encrypting and self.freeze_var.get():
self.output_text.see(END)
self.output_text['state'] = DISABLED
output = property(fset=output, doc='Output area property.')
@property
def chain_size(self):
"Chain size for the Markov chains used when encrypting."
try:
value = ast.literal_eval(self.chain_size_entry.get())
assert isinstance(value, int) and 2 <= value <= 256
return value
except:
self.chain_size_entry.delete(0, END)
self.chain_size_entry.insert(0, '2')
return 2
@property
def plain_text(self):
"Plain text or ignored characters in encryption process."
try:
value = self.repr_to_obj(self.plain_text_entry.get(), '')
assert isinstance(value, str)
return value
except:
self.plain_text_entry.delete(0, END)
return ''
########################################################################
# Encrypt a string for display in the interface's output area.
def encode(self, string):
"Encode the string and show the cipher-text in the output."
try:
cipher = self.build_cipher(string)
except ValueError:
self.output = ''
except:
self.output = traceback.format_exc()
else:
self.output = self.build_header() + '\n\n' + cipher
def build_cipher(self, string):
"Build cipher-text based on plain-text and return answer."
if self.key and self.freeze_var.get():
cipher, primer = me.encrypt_str(string, self.key, self.primer)
else:
args = string, self.chain_size, self.plain_text
cipher, self.key, self.primer = me.auto_encrypt_str(*args)
return cipher
def build_header(self):
"Build header from key and primer values in current use."
header = '\n'.join(map(self.bytes_to_repr, self.key.data))
header += '\n' + self.bytes_to_repr(self.primer.data)
return header
########################################################################
# Decrypt a string for display in the interface's output area.
def decode(self, string):
"Decode encrypted message and display plain-text in output."
try:
cipher = self.extract_keys(string)
text = self.extract_text(cipher)
except ValueError:
self.output = ''
except:
self.output = traceback.format_exc()
else:
self.output = text
def extract_keys(self, string):
"Extract keys to decryption and return the cipher-text area."
header, cipher = string.split('\n\n', 1)
*key, primer = map(self.repr_to_obj, header.split('\n'))
self.key, self.primer = me.Key(tuple(key)), me.Primer(primer)
return cipher
def extract_text(self, string):
"Extract text message from string using built key and primer."
text, primer = me.decrypt_str(string, self.key, self.primer)
return text
########################################################################
# Provide some special methods to simplify the program's code.
@property
def encrypting(self):
"Encrypting boolean stating current operations mode."
return {'encode': True, 'decode': False}[self.mode_var.get()]
@staticmethod
def bytes_to_repr(obj):
"Convert bytes object into suitable representation."
if not isinstance(obj, bytes):
raise TypeError('Object must be a bytes instance!')
return repr(obj)[2:-1]
@staticmethod
def repr_to_obj(string, prefix='b'):
"Convert representation into an equivalent object."
for template in '{}"{}"', "{}'{}'":
try:
return ast.literal_eval(template.format(prefix, string))
except:
pass
raise ValueError('Cannot convert {!r} to object!'.format(string))
@classmethod
def main(cls):
"Create context for demo and run a test instance."
NoDefaultRoot()
root = Tk()
root.minsize(420, 330)
root.title('Markov Demo 2')
test = cls(root)
test.grid(sticky=NSEW)
root.grid_rowconfigure(0, weight=1)
root.grid_columnconfigure(0, weight=1)
root.mainloop()
print(entry_placeholder_font.config())
cool_font = entry_placeholder_font
# ui_style.configure('Placeholder.TEntry', foreground='green', font=)
# self.entry_placeholder_font = entry_placeholder_font
entry = PlaceholderEntry(login_frame,
'Enter your username..',
style='Bold.TEntry')
print(entry.ph_style)
# I make the entry a little bit more height using ipady option
entry.grid(row=0, column=1, ipady=1)
# add_placeholder_to(entry, 'Enter your username...', 'Placeholder.Default.TEntry')
label = Label(login_frame, text="Password: ")
label.grid(row=1, column=0, sticky='e')
entry = Entry(login_frame, style='Default.TEntry')
entry.grid(row=1, column=1, ipady=1)
add_placeholder_to(entry, 'Password...', 'Placeholder.Default.TEntry')
# Every row has a minimum size
login_frame.grid_rowconfigure(0, minsize=28)
login_frame.grid_rowconfigure(1, minsize=28)
root.mainloop()
