def encry(self):
hide_msg = self.msg_box.get('1.0', END).replace('\n', '')
if self.file_name == '':
if hide_msg == '':
self.msg_box.delete('1.0', END)
self.msg_box.insert(END, 'Please open a bitmap file first.')
return 0
elif hide_msg == '':
self.msg_box.insert(END, 'Input hidden message here.')
return 0
elif len(hide_msg) > self.available:
if self.msg_box.get('1.0', END) != '':
self.msg_box.delete('1.0', END)
self.msg_box.insert(
END, 'Input hidden message is larger than ' +
str(self.available) + ' bytes.')
return 0
else:
origin_file_name = self.file_name
# add 'hidden' to new image file name
new_file_name = self.file_name[:-4] + '_hidden' + self.file_name[
-4:]
encryption = Encryption(origin_file_name, new_file_name, hide_msg)
encryption.run()
global right_img
right_img = Image.open(self.file_name)
w, h = right_img.size
# resize img
scale_w = img_display_width / w
scale_h = img_display_height / h
scale = min(scale_w, scale_h)
new_w = math.ceil(scale * w)
new_h = math.ceil(scale * h)
img = right_img.resize((new_w, new_h), Image.NEAREST)
global right_photo
right_photo = ImageTk.PhotoImage(img)
self.right_img_canvas.create_image(img_display_width / 2,
img_display_height / 2,
anchor=CENTER,
image=right_photo)
if self.msg_box.get('1.0', END) != '':
self.msg_box.delete('1.0', END)
self.msg_box.insert(END,
'Saved new file into ' + new_file_name + '.')
