Canvas - Text

The first code shows how the text is located in the canvas:

from Tkinter import *

root = Tk()

ch, cw = 200, 200
x0, y0 =   0,   0
x1, y1 =  20,  40 
bgc    = "black"  # bgc : background colour

c1 = Canvas(root, height = ch, width = cw, bg = bgc)

c1.create_text( x1, y1, anchor = W, font= "Verdana" ,
                text = "Hey there!", fill="white"   )
c1.create_rectangle( x0, y0, x1, y1,
                     fill    = "blue",
                     outline = "cyan")
c1.pack()
root.title("Draft")
root.mainloop()
 

We must create a canvas using the "Canvas" method, also its dimensions are declared here.

c1 = Tkinter.Canvas(root, height = ch, width = cw, bg = "black")

Then we create text by using:

c1.create_text( x1, y1, anchor = W, font = "Verdana" , text = "Hey there!", fill="white")

The text will be fitted inside an invisible rectangle, but the position will refered with respect to the intersection point between the left side line of the rectangle and the line that divides the rectangle in half, and then the location of this intersection point will be fixed by (x1, y1). In this case, it's been used (x1,y1) = (20; 40) as the position of such intersection point.

(x1,y1) = (20, 40)

To show what has been explained of the intersection point, there's a graphical example that uses the drawing of a rectangle that uses the origin point (0; 0) and the point (x1, y1) as its corners.Then we could show the results in the screen by using the "pack" or "grid" methods.

The next examples have some variations.

Second code sample is:

from Tkinter import *

root    = Tk()
s       = 20
ch, cw  = 200, 200
x, y, n =  0,  90, 11
bgc     = "black"  # bgc : background colour
cr1     = "white"
cr2     = "red"
strin6  = '''Python 2.7.9
(
  default\t\t,
  Dec 10 2014\t,
  12:24:55
)'''

c1 = Canvas(root, height = ch, width = cw, bg = bgc)
c1.create_text(20, 90, anchor = W, font=("Verdana", n), text = strin6, fill="white")
c1.pack()
root.title("Dr4f7")
root.mainloop()
 

Third code sample is:

from Tkinter import *

def line(a, b, color, w):
    x0, y0, x1, y1 = a[0], a[1], b[0], b[1]
    c1.create_line(x0, y0, x1, y1, fill = color, width = w)

def txt(x, y, txt, size, colour):
    c1.create_text( x, y,
                    anchor = W,
                    font = ("Verdana", size),
                    text = txt,
                    fill = colour)

def n(a0, L, w):
    x0, y0 = a0[0], a0[1]
    x1, y1 = x0 + L, y0 + L
    dx, dy = L / 5.0, L / 5.0
    a1, b1 = [x0 - dx, y0 - dy], [x1 + dx, y1 + dy]
    a2, b2 = [a1[0], b1[1]], [b1[0], a1[1]]
    r1, r2 = "orange", "white"
    c1.create_oval(x0, y0, x1, y1, outline = r1, fill = r2, width = w)
    line(a2, b2, r1, w)
    print a2, "\n", b2

root   = Tk()
n_t1   = 14
n_t2   = 9
ch, cw = 600, 350
x0, y0 =   20, ch*0.5
bgc    = "black"  # bgc : background colour
cr1    = "white"
cr2    = "red"
a, b   = [2 * x0, ch - 20], [cw - 2 * x0, ch - 20]
c, d   = [2 * x0, ch - 30], [cw - 2 * x0, ch - 30]
e1     = [c[0] - 28, c[1] - 3]
e2     = [d[0] + 10, d[1] - 3]
title = '''
Joydrop - Breakdown
(Lyrics)
'''
lyrics = '''

And I don't hear you anymore
And I can't see you on the floor
It's like a nightmare come to life
But don't be frightened of the light

And all the days you pushed around
And all the times you lied to yourself
And all the dreams we had just might breakdown
woooo--ooo
Breakdown
woooo--ooo
And I wonder who you love, really love

You know I want you too much
You know it kills me the thought
I want to scream, I want to cry
Just to save myself just one last time

And all the days you pushed around
And all the times you lied to yourself
And all the dreams we had just might breakdown
woooo--ooo
Breakdown
woooo--ooo
And I wonder who you love, really love

And all the days you pushed around
And all the times you lied to yourself
And all the dreams we had just might breakdown
woooo--ooo
Breakdown
woooo--ooo
Breakdown
woooo--ooo
And I wonder who you love, really love
'''

c1 = Canvas(root, height = ch, width = cw, bg = bgc)
txt(x0, 1.35*x0,  title, n_t1,   "red")
txt(x0, y0, lyrics, n_t2, "white")
line(a, b, "orange", 1)
line(c, d, "orange", 1)
#--- circle symbols ---#
n(e1, 18, 2)
n(e2, 18, 2)

c1.pack()
root.title("Joydrop - Breakdown (Lyrics)")
print a, b
print c, d
root.mainloop()