'''
May 2017
@author: Burkhard A. Meier
'''
#======================
# imports
#======================
import tkinter as tk
from tkinter import ttk
from tkinter import scrolledtext
from tkinter import Menu
from tkinter import messagebox as msg
from tkinter import Spinbox
#===================================================================
class ToolTip(object):
def __init__(self, widget):
self.widget = widget
self.tip_window = None
def show_tip(self, tip_text):
"Display text in a tooltip window"
if self.tip_window or not tip_text:
return
x, y, _cx, cy = self.widget.bbox("insert") # get size of widget
x = x + self.widget.winfo_rootx() + 25 # calculate to display tooltip
y = y + cy + self.widget.winfo_rooty() + 25 # below and to the right
self.tip_window = tw = tk.Toplevel(self.widget) # create new tooltip window
tw.wm_overrideredirect(True) # remove all Window Manager (wm) decorations
# tw.wm_overrideredirect(False) # uncomment to see the effect
tw.wm_geometry("+%d+%d" % (x, y)) # create window size
label = tk.Label(tw, text=tip_text, justify=tk.LEFT,
background="#ffffe0", relief=tk.SOLID, borderwidth=1,
font=("tahoma", "8", "normal"))
label.pack(ipadx=1)
def hide_tip(self):
tw = self.tip_window
self.tip_window = None
if tw:
tw.destroy()
#===================================================================
def create_ToolTip(widget, text):
toolTip = ToolTip(widget) # create instance of class
def enter(event):
toolTip.show_tip(text)
def leave(event):
toolTip.hide_tip()
widget.bind('<Enter>', enter) # bind mouse events
widget.bind('<Leave>', leave)
#===================================================================
# Create instance
win = tk.Tk()
# Add a title
win.title("Python GUI")
tabControl = ttk.Notebook(win) # Create Tab Control
tab1 = ttk.Frame(tabControl) # Create a tab
tabControl.add(tab1, text='Tab 1') # Add the tab
tab2 = ttk.Frame(tabControl) #
tabControl.add(tab2, text='Tab 2') # Add a second tab
tab3 = ttk.Frame(tabControl) #
tabControl.add(tab3, text='Tab 3') # Add a third tab
tabControl.pack(expand=1, fill="both") # Pack to make visible
# LabelFrame using tab1 as the parent
mighty = ttk.LabelFrame(tab1, text=' Mighty Python ')
mighty.grid(column=0, row=0, padx=8, pady=4)
# Modify adding a Label using mighty as the parent instead of win
a_label = ttk.Label(mighty, text="Enter a name:")
a_label.grid(column=0, row=0, sticky='W')
# Modified Button Click Function
def click_me():
action.configure(text='Hello ' + name.get() + ' ' +
number_chosen.get())
# Adding a Textbox Entry widget
name = tk.StringVar()
name_entered = ttk.Entry(mighty, width=12, textvariable=name)
name_entered.grid(column=0, row=1, sticky='W') # align left/West
# Adding a Button
action = ttk.Button(mighty, text="Click Me!", command=click_me)
action.grid(column=2, row=1)
ttk.Label(mighty, text="Choose a number:").grid(column=1, row=0)
number = tk.StringVar()
number_chosen = ttk.Combobox(mighty, width=12, textvariable=number, state='readonly')
number_chosen['values'] = (1, 2, 4, 42, 100)
number_chosen.grid(column=1, row=1)
number_chosen.current(0)
# Spinbox callback
def _spin():
value = spin.get()
print(value)
scrol.insert(tk.INSERT, value + '\n')
# Adding a Spinbox widget
spin = Spinbox(mighty, values=(1, 2, 4, 42, 100), width=5, bd=9, command=_spin) # using range
spin.grid(column=0, row=2)
# Add a Tooltip
create_ToolTip(spin, 'This is a Spin control')
# Using a scrolled Text control
scrol_w = 30
scrol_h = 3
scrol = scrolledtext.ScrolledText(mighty, width=scrol_w, height=scrol_h, wrap=tk.WORD)
scrol.grid(column=0, row=3, sticky='WE', columnspan=3)
# Add a Tooltip to the ScrolledText widget
create_ToolTip(scrol, 'This is a ScrolledText widget')
# Tab Control 2 refactoring ---------------------------------------------------------
# We are creating a container frame to hold all other widgets -- Tab2
mighty2 = ttk.LabelFrame(tab2, text=' The Snake ')
mighty2.grid(column=0, row=0, padx=8, pady=4)
# Creating three checkbuttons
chVarDis = tk.IntVar()
check1 = tk.Checkbutton(mighty2, text="Disabled", variable=chVarDis, state='disabled')
check1.select()
check1.grid(column=0, row=4, sticky=tk.W)
chVarUn = tk.IntVar()
check2 = tk.Checkbutton(mighty2, text="UnChecked", variable=chVarUn)
check2.deselect()
check2.grid(column=1, row=4, sticky=tk.W)
chVarEn = tk.IntVar()
check3 = tk.Checkbutton(mighty2, text="Enabled", variable=chVarEn)
check3.deselect()
check3.grid(column=2, row=4, sticky=tk.W)
# GUI Callback function
def checkCallback(*ignoredArgs):
# only enable one checkbutton
if chVarUn.get(): check3.configure(state='disabled')
else: check3.configure(state='normal')
if chVarEn.get(): check2.configure(state='disabled')
else: check2.configure(state='normal')
# trace the state of the two checkbuttons
chVarUn.trace('w', lambda unused0, unused1, unused2 : checkCallback())
chVarEn.trace('w', lambda unused0, unused1, unused2 : checkCallback())
# First, we change our Radiobutton global variables into a list
colors = ["Blue", "Gold", "Red"]
# We have also changed the callback function to be zero-based, using the list
# instead of module-level global variables
# Radiobutton Callback
def radCall():
radSel=radVar.get()
if radSel == 0: win.configure(background=colors[0]) # zero-based
elif radSel == 1: win.configure(background=colors[1]) # using list
elif radSel == 2: win.configure(background=colors[2])
# create three Radiobuttons using one variable
radVar = tk.IntVar()
# Next we are selecting a non-existing index value for radVar
radVar.set(99)
# Now we are creating all three Radiobutton widgets within one loop
for col in range(3):
curRad = tk.Radiobutton(mighty2, text=colors[col], variable=radVar,
value=col, command=radCall)
curRad.grid(column=col, row=6, sticky=tk.W) # row=6
# Create a container to hold labels
buttons_frame = ttk.LabelFrame(mighty2, text=' Labels in a Frame ')
buttons_frame.grid(column=0, row=7)
# Place labels into the container element
ttk.Label(buttons_frame, text="Label1").grid(column=0, row=0, sticky=tk.W)
ttk.Label(buttons_frame, text="Label2").grid(column=1, row=0, sticky=tk.W)
ttk.Label(buttons_frame, text="Label3").grid(column=2, row=0, sticky=tk.W)
# Exit GUI cleanly
def _quit():
win.quit()
win.destroy()
exit()
# Tab Control 3 -------------------------------
tab3_frame = tk.Frame(tab3, bg='blue')
tab3_frame.pack()
for orange_color in range(2):
canvas = tk.Canvas(tab3_frame, width=150, height=80, highlightthickness=0, bg='orange')
canvas.grid(row=orange_color, column=orange_color)
# Creating a Menu Bar
menu_bar = Menu(win)
win.config(menu=menu_bar)
# Add menu items
file_menu = Menu(menu_bar, tearoff=0)
file_menu.add_command(label="New")
file_menu.add_separator()
file_menu.add_command(label="Exit", command=_quit)
menu_bar.add_cascade(label="File", menu=file_menu)
# Display a Message Box
def _msgBox():
msg.showinfo('Python Message Info Box', 'A Python GUI created using tkinter:\nThe year is 2017.')
# Add another Menu to the Menu Bar and an item
help_menu = Menu(menu_bar, tearoff=0)
help_menu.add_command(label="About", command=_msgBox) # display messagebox when clicked
menu_bar.add_cascade(label="Help", menu=help_menu)
# Change the main windows icon
win.iconbitmap('pyc.ico')
name_entered.focus() # Place cursor into name Entry
#======================
# Start GUI
#======================
win.mainloop()
