'''
Created on Jun 17, 2019
Chapter 11
@author: Burkhard
'''
import tkinter as tk
from tkinter import ttk
from tkinter import scrolledtext
from tkinter import Menu
from tkinter import Spinbox
from tkinter.messagebox import showinfo
#-----------------------------------------------------------
# Callback functions
#-----------------------------------------------------------
def clickMe(button, name, number):
button.configure(text='Hello {} {}'.format(name.get(), number.get()))
# Button callback Clear Text
def clearScrol(scr):
scr.delete('1.0', tk.END)
# Spinbox callback
def _spin(spin, scr):
value = spin.get()
print(value)
scr.insert(tk.INSERT, value + '\n')
# Checkbox callback
def checkCallback(*ignoredArgs):
pass
#------------------------------------------
def create_display_area():
# add empty label for spacing
display_area_label = tk.Label(display_area, text="", height=2)
display_area_label.grid(column=0, row=0)
#------------------------------------------
def clear_display_area():
# remove previous widget(s) from display_area:
for widget in display_area.grid_slaves():
if int(widget.grid_info()["row"]) == 0:
widget.grid_forget()
#------------------------------------------
# Exit GUI cleanly
def _quit():
win.quit()
win.destroy()
exit()
#------------------------------------------
def create_menu():
# Creating a Menu Bar
menuBar = Menu(win_frame_multi_row_tabs)
win.config(menu=menuBar)
# Add menu items
fileMenu = Menu(menuBar, tearoff=0)
fileMenu.add_command(label="New")
fileMenu.add_separator()
fileMenu.add_command(label="Exit", command=_quit)
menuBar.add_cascade(label="File", menu=fileMenu)
# Add another Menu to the Menu Bar and an item
helpMenu = Menu(menuBar, tearoff=0)
helpMenu.add_command(label="About")
menuBar.add_cascade(label="Help", menu=helpMenu)
#------------------------------------------
def display_tab1():
# Container frame to hold all other widgets
monty = ttk.LabelFrame(display_area, text=' Mighty Python ')
monty.grid(column=0, row=0, padx=8, pady=4)
# Adding a Label
ttk.Label(monty, text="Enter a name:").grid(column=0, row=0, sticky='W')
# Adding a Textbox Entry widget
name = tk.StringVar()
nameEntered = ttk.Entry(monty, width=12, textvariable=name)
nameEntered.grid(column=0, row=1, sticky='W')
ttk.Label(monty, text="Choose a number:").grid(column=1, row=0)
number = tk.StringVar()
numberChosen = ttk.Combobox(monty, width=12, textvariable=number)
numberChosen['values'] = (1, 2, 4, 42, 100)
numberChosen.grid(column=1, row=1)
numberChosen.current(0)
# Adding a Button
action = ttk.Button(monty, text="Click Me!", command= lambda: clickMe(action, name, number))
action.grid(column=2, row=1)
# Using a scrolled Text control
scrolW = 30; scrolH = 3
scr = scrolledtext.ScrolledText(monty, width=scrolW, height=scrolH, wrap=tk.WORD)
scr.grid(column=0, row=3, sticky='WE', columnspan=3)
# Adding a Spinbox widget using a set of values
spin = Spinbox(monty, values=(1, 2, 4, 42, 100), width=5, bd=8, command= lambda: _spin(spin, scr))
spin.grid(column=0, row=2, sticky='W')
# Adding another Button
clear = ttk.Button(monty, text="Clear Text", command= lambda: clearScrol(scr))
clear.grid(column=2, row=2)
# Adding more Feature Buttons
startRow = 4
for idx in range(12):
if idx < 2:
col = idx
else:
col += 1
if not idx % 3:
startRow += 1
col = 0
b = ttk.Button(monty, text="Feature " + str(idx+1))
b.grid(column=col, row=startRow)
#------------------------------------------
def display_tab2():
monty2 = ttk.LabelFrame(display_area, text=' Holy Grail ')
monty2.grid(column=0, row=0, padx=8, pady=4)
# Creating three checkbuttons
chVarDis = tk.IntVar()
check1 = tk.Checkbutton(monty2, text="Disabled", variable=chVarDis, state='disabled')
check1.select()
check1.grid(column=0, row=0, sticky=tk.W)
chVarUn = tk.IntVar()
check2 = tk.Checkbutton(monty2, text="UnChecked", variable=chVarUn)
check2.deselect()
check2.grid(column=1, row=0, sticky=tk.W )
chVarEn = tk.IntVar()
check3 = tk.Checkbutton(monty2, text="Toggle", variable=chVarEn)
check3.deselect()
check3.grid(column=2, row=0, sticky=tk.W)
# Create a container to hold labels
labelsFrame = ttk.LabelFrame(monty2, text=' Labels in a Frame ')
labelsFrame.grid(column=0, row=7)
# Place labels into the container element - vertically
ttk.Label(labelsFrame, text="Label1").grid(column=0, row=0)
ttk.Label(labelsFrame, text="Label2").grid(column=0, row=1)
# Add some space around each label
for child in labelsFrame.winfo_children():
child.grid_configure(padx=8)
#------------------------------------------
def display_tab3():
monty3 = ttk.LabelFrame(display_area, text=' New Features ')
monty3.grid(column=0, row=0, padx=8, pady=4)
# Adding more Feature Buttons
startRow = 4
for idx in range(24):
if idx < 2:
colIdx = idx
col = colIdx
else:
col += 1
if not idx % 3:
startRow += 1
col = 0
b = ttk.Button(monty3, text="Feature " + str(idx + 1))
b.grid(column=col, row=startRow)
# Add some space around each label
for child in monty3.winfo_children():
child.grid_configure(padx=8)
#------------------------------------------
def display_button(active_notebook, tab_no):
btn = ttk.Button(display_area, text=active_notebook +' - Tab '+ tab_no, \
command= lambda: showinfo("Tab Display", "Tab: " + tab_no) )
btn.grid(column=0, row=0, padx=8, pady=8)
#------------------------------------------
def notebook_callback(event):
clear_display_area()
current_notebook = str(event.widget)
tab_no = str(event.widget.index("current") + 1)
if current_notebook.endswith('notebook'):
active_notebook = 'Notebook 1'
elif current_notebook.endswith('notebook2'):
active_notebook = 'Notebook 2'
else:
active_notebook = ''
if active_notebook is 'Notebook 1':
if tab_no == '1': display_tab1()
elif tab_no == '2': display_tab2()
elif tab_no == '3': display_tab3()
else: display_button(active_notebook, tab_no)
else:
display_button(active_notebook, tab_no)
#-----------------------------------------------------------
# Create GUI
#-----------------------------------------------------------
win = tk.Tk() # Create instance
win.title("Python GUI") # Add title
#------------------------------------------
win_frame_multi_row_tabs = ttk.Frame(win)
win_frame_multi_row_tabs.grid(column=0, row=0, sticky='W')
display_area = ttk.Labelframe(win, text=' Tab Display Area ')
display_area.grid(column=0, row=1, sticky='WE')
note1 = ttk.Notebook(win_frame_multi_row_tabs)
note1.grid(column=0, row=0)
note2 = ttk.Notebook(win_frame_multi_row_tabs)
note2.grid(column=0, row=1)
# create and add tabs to Notebooks
for tab_no in range(5):
tab1 = ttk.Frame(note1, width=0, height=0) # Create a tab for notebook 1
tab2 = ttk.Frame(note2, width=0, height=0) # Create a tab for notebook 2
note1.add(tab1, text=' Tab {} '.format(tab_no + 1)) # Add tab notebook 1
note2.add(tab2, text=' Tab {} '.format(tab_no + 1)) # Add tab notebook 2
# bind click-events to Notebooks
note1.bind("<ButtonRelease-1>", notebook_callback)
note2.bind("<ButtonRelease-1>", notebook_callback)
create_display_area()
create_menu()
display_tab1()
#-------------
win.mainloop()
#-------------
