# Tk_demos.py -- Basic Level

# Tk_demos.py -- Basic Level

from Tkinter import *


root = Tk()

theLabel = Label(root, text="A Tkinter Window in Python")
theLabel.pack()
Lab2 = Label(root, text="This is Label #2")
Lab2.pack()

root.mainloop()


theLabel = Label(None, text="Click Me", fg="blue")
theLabel.pack()
Btn2 = Button(None, text="Button #2*", fg="red")
Btn2.pack()

root.mainloop()


root = Tk()

frameA = Frame(root)
frameA.pack()
frameB = Frame(root)
frameB.pack(side=BOTTOM)

BtnA = Label(frameA, text="Button #1", fg="blue")
BtnA.pack()
BtnB = Label(frameA, text="Button #2", fg="red")
BtnB.pack()
BtnC = Label(frameB, text="Button #3", fg="purple")
BtnC.pack()
BtnD = Label(frameB, text="Button #4", fg="green")
BtnD.pack()

root.mainloop()


root = Tk()

frameA = Frame(root)
frameA.pack()
frameB = Frame(root)
frameB.pack(side=BOTTOM)

BtnA = Label(frameA, text="Button #1", fg="blue")
BtnA.pack(side=LEFT)
BtnB = Label(frameA, text="Button #2", fg="red")
BtnB.pack(side=LEFT)
BtnC = Label(frameB, text="Button #3", fg="purple")
BtnC.pack(side=LEFT)
BtnD = Label(frameB, text="Button #4", fg="green")
BtnD.pack(side=LEFT)

root.mainloop()


root = Tk()

BtnA = Label(None, text="Button #1", bg="blue")
BtnA.pack()
BtnB = Label(None, text="Button #2", bg="red")
BtnB.pack(fill=X)
BtnC = Label(None, text="Button #3", bg="purple")
BtnC.pack(side=LEFT, fill=Y)
BtnD = Label(None, text="Button #4", bg="green")
BtnD.pack(expand=True, fill=BOTH)

root.mainloop()


root = Tk()

LabelA = Label(None, text="Label #1", bg="blue")

LabelB = Label(None, text="Label #2", bg="red")

LabelC = Label(None, text="Label #3", bg="purple")

LabelD = Label(None, text="Label #4", bg="green")

LabelA.grid(row=0, column=1)

LabelB.grid(row=1, column=0)

LabelC.grid(row=1, column=3)

LabelD.grid(row=2, column=2)

root.mainloop()


root = Tk()

theLabel = Label(None, text="Enter Username: ", fg="blue")

theLabel.grid(row=0, column=0)

theEntry = Entry(root)

theEntry.grid(row=0, column=1)

root.mainloop()


root = Tk()

theLabel = Label(None, text="Enter Username: ", fg="blue")

theLabel.grid(row=0, column=0)

theEntry = Entry(root)

theEntry.grid(row=0, column=1)

Lab2 = Label(None, text="Password: ", fg="blue")

Lab2.grid(row=1, column=0)

Entry2 = Entry(root)

Entry2.grid(row=1, column=1)

theChkBtn = Checkbutton(root, text="Remember Password ")

theChkBtn.grid(columnspan=2)

root.mainloop()

root = Tk()

def sayHi():
    print "Hello World! \n  -- It's Python\n"

theButton = Button(None, text="Click Me", fg="blue", command=sayHi)
theButton.pack()

root.mainloop()


root = Tk()
root.geometry('400x400+1+1')

def sayHi(*arg):
    print "Thanks, You Are Awesome!\n"

theLabel = Label(root, text="Please Click Anywhere On The Canvas", fg="blue")
theLabel.pack()
root.bind('<Button-1>', sayHi)

root.mainloop()


root = Tk()
root.geometry('200x200+1+1')

def leftClk(event):
    print "Left Click"

def rightClk(event):
    print "Right Click"

def spacebar(event):
    print "Spacebar"

def leftKey(event):
    print "Left Arrow"

def rightKey(event):
    print "Right Arrow"

theLabel = Label(root, text="*** Python Bindings ***", fg="blue")
theLabel.pack()
root.bind('<Button-1>', leftClk)
root.bind('<Button-3>', rightClk)
root.bind('<space>', spacebar)
root.bind('<Left>', leftKey)
root.bind('<Right>', rightKey)

root.mainloop()


root = Tk()

msg=''' *** Basic Calculator (BEDMAS) *** \n\nNote:\nAlso try 7+2*10
then (7+2)*10\nWhereas...\n1st answer will be 27\n2nd answer will be 90\n'''

top = Label(root, text=msg, fg="blue")
top.pack()

def evaluate(event):
    data = e.get()
    ans.configure(text='Answer: '+str(eval(data)))

e = Entry(root)
e.bind('<Return>', evaluate)
e.pack(fill=X)
ans = Label(root, text='Press Enter To Calculate')
ans.pack()

root.mainloop()


import tkMessageBox
tkMessageBox.showinfo("This Is The Window Title", "Hello Python Message Box")

for z in 'z'*3:
    ans = tkMessageBox.askquestion("This Will Loop 3 Times", "Are You A Person?")
    if ans == 'yes':
        reply = "Hello Human!"
    if ans == 'no':
        reply = "Hello Non-Human Entity!"
    #
    tkMessageBox.showinfo("Message Box Demo", reply)

root = Tk()
root.geometry('500x500+1+1')

def mbox(reply):
    tkMessageBox.showinfo("Submenu Demo", reply)
def A():
    mbox("Hello A!")
def B():
    mbox("Hey B!")
def C():
    mbox("Hi C!")
def X():
    mbox("Greetings X!")
def Y():
    mbox("Bye Y!")
def Z():
    mbox("Welcome Onboard Z!")
def about():
    mbox("This Is Python In Tkinter!")

menubar = Menu(root)

# create a pulldown menu, and add it to the menu bar
submenuABC = Menu(menubar, tearoff=0)
submenuABC.add_command(label="Option A", command=A)
submenuABC.add_command(label="Option B", command=B)
submenuABC.add_command(label="Option C", command=C)
submenuABC.add_separator()
submenuABC.add_command(label="** Exit **", command=root.destroy)
menubar.add_cascade(label="ABC", menu=submenuABC)

# create more pulldown menus
submenuXYZ = Menu(menubar, tearoff=0)
submenuXYZ.add_command(label="Option X", command=X)
submenuXYZ.add_command(label="Option Y", command=Y)
submenuXYZ.add_command(label="Option Z", command=Z)
menubar.add_cascade(label="XYZ", menu=submenuXYZ)

helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label="About", command=about)
menubar.add_cascade(label="Help", menu=helpmenu)

# display the menu
root.config(menu=menubar)

root.mainloop()


root = Tk()

class Cv():
    outp = ''
cv = Cv()

calc = StringVar()
calc.set('9+21')

ans = Label(root, textvariable=calc)
ans.grid(columnspan=4)

def keypress(keyp):
    if keyp or cv.outp:
        cv.outp = cv.outp + str(keyp)
        calc.set(cv.outp)

def equalbtn(*arg):
    cv.outp = '1.0*{}'.format(cv.outp)
    cv.outp = str(eval(cv.outp))
    calc.set(cv.outp)

def reset(*arg):
    cv.outp = ''
    calc.set('0')

sym = 'DIVIDE / MULTIPLY * SUBSTRACT - ADD +'.split()

Btn = range(10)
for z in Btn:
    Btn[z] = Button(root, text='\n  {}  \n'.format(z), fg="blue", width=12, command=lambda z=z:keypress(z))
    if not z: Btn[0].grid(row=4, column=1)
    else: Btn[z].grid(row=((z-1)/3)+1, column=(z-1)%3)
#
z=1
while sym:
    oper,sign=sym.pop(0),sym.pop(0)
    Btn.append('')
    Btn[len(Btn)-1] = Button(root, text='\n {} \n'.format(oper), fg="red", width=12, command=lambda s=sign:keypress(s))
    Btn[len(Btn)-1].grid(row=z, column=3)
    z+=1

equal = Button(root, text='\n = \n', width=12, command=equalbtn)
equal.grid(row=4, column=2)
reset = Button(root, text='\n C \n', fg="red", width=12, command=reset)
reset.grid(row=4, column=0)

root.mainloop()


root = Tk()

canvas = Canvas(root, width=600, height=600)
canvas.pack()
x,y = 60,100
canvas.create_oval((x,y,x+400,y+270), fill='green')
canvas.create_polygon(60,100, 500,200, 580,400, 20,580, 480,300, fill='gray')
canvas.create_rectangle(20,20,250,580)

root.mainloop()

root = Tk()

import random, time
canvas = Canvas(root, width=600, height=600)
canvas.pack()

colors = 'red orange yellow green blue purple gray aqua lightpink'.split()

def oRect(x,y,x2,y2,color=None):
    canvas.create_rectangle((x,y,x2,y2),fill=color)
#
xy = []
for x in range(1,6):
    for y in range(1,6):
        xy += [[x*100,y*100]]
#
print xy

xy2 = []
while 1:
    canvas.delete('all')
    random.shuffle(xy) # Note: "xy = random.shuffle(xy)" will return "None"
    xy2 = xy[:]
    for color in colors:
        x,y = xy2.pop()
        x -= random.randint(0,30)
        y -= random.randint(0,30)
        x2 = x + random.randint(20,60)
        y2 = y + random.randint(20,60)
        oRect(x,y,x2,y2,color)
        canvas.update()
    t = time.time() + 0.4
    while t > time.time(): 0

root.mainloop()