# Author: Miguel Martinez Lopez
try:
import Tkinter as tk
except ImportError:
import tkinter as tk
class Placeholder_State(object):
__slots__ = 'normal_color', 'normal_font', 'placeholder_text', 'placeholder_color', 'placeholder_font', 'with_placeholder'
def add_placeholder_to(entry, placeholder, color="grey", font=None):
normal_color = entry.cget("fg")
normal_font = entry.cget("font")
if font is None:
font = normal_font
state = Placeholder_State()
state.normal_color=normal_color
state.normal_font=normal_font
state.placeholder_color=color
state.placeholder_font=font
state.placeholder_text = placeholder
state.with_placeholder=True
def on_focusin(event, entry=entry, state=state):
if state.with_placeholder:
entry.delete(0, "end")
entry.config(fg = state.normal_color, font=state.normal_font)
state.with_placeholder = False
def on_focusout(event, entry=entry, state=state):
if entry.get() == '':
entry.insert(0, state.placeholder_text)
entry.config(fg = state.placeholder_color, font=state.placeholder_font)
state.with_placeholder = True
entry.insert(0, placeholder)
entry.config(fg = color, font=font)
entry.bind('<FocusIn>', on_focusin, add="+")
entry.bind('<FocusOut>', on_focusout, add="+")
entry.placeholder_state = state
return state
if __name__ == "__main__":
root = tk.Tk()
login_frame = tk.LabelFrame(root, text="Login", padx=5, pady=5)
login_frame.pack(padx=10, pady=10)
label = tk.Label(login_frame, text="User: ")
label.grid(row=0, column=0, sticky=tk.E)
# I add a border of 1px width and color #bebebe to the entry using these parameters:
# - highlightthickness=1
# - highlightbackground="#bebebe"
#
entry = tk.Entry(login_frame, bd=1, bg="white", highlightbackground="#bebebe", highlightthickness=1)
# 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...')
label = tk.Label(login_frame, text="Password: ")
label.grid(row=1, column=0, sticky=tk.E)
entry = tk.Entry(login_frame, bd=1, bg="white", highlightbackground="#bebebe", highlightthickness=1)
entry.grid(row=1, column=1, ipady=1)
add_placeholder_to(entry, 'Password...')
# Every row has a minimum size
login_frame.grid_rowconfigure(0, minsize=28)
login_frame.grid_rowconfigure(1, minsize=28)
root.mainloop()
Diff to Previous Revision
--- revision 7 2017-04-01 22:15:53
+++ revision 8 2017-04-06 14:21:03
@@ -43,7 +43,7 @@
entry.bind('<FocusIn>', on_focusin, add="+")
entry.bind('<FocusOut>', on_focusout, add="+")
- entry._placeholder_state = state
+ entry.placeholder_state = state
return state
