splash screen problem

[nazish zehra]

i am using splash screen for my program but problem is that i want the canvas to be displayed in small size and in the centre of screen.if i adjust the size then it moves away from the centre of screen.Code is:

import Tkinter as tk
 
root = tk.Tk()
# show no frame
root.overrideredirect(True)
width = root.winfo_screenwidth()
height = root.winfo_screenheight()
root.geometry('%dx%d+%d+%d' % (width*0.8, height*0.8, width*0.1, height*0.1))
 
image_file = "10.gif"

# use Tkinter's PhotoImage for .gif files
image = tk.PhotoImage(file=image_file)
canvas = tk.Canvas(root, height=height*0.8, width=width*0.8, bg="brown")
canvas.create_image(width*0.8/2, height*0.8/2, image=image)
canvas.pack()
 
# show the splash screen for 1000 milliseconds then destroy
root.after(1000, root.destroy)
root.mainloop()

[bvdet]

I don't see what your problem is. If you adjust the size of the widget you must also adjust its location to keep it in the center of the screen.

[nazish zehra]

but it's not working i cant understand it:(

[bvdet]

nazish zehra,

Your comment "but it's not working i cant understand it:(" does not help us understand your problem. What is not working about it? Are you receiving an error? If so, what is in the traceback? We cannot help you unless you help us.

[Glenton]

Is it just the geometry you're struggling with?
If m,n is width, length of image and
M,N is width,length of canvas, then corner coordinates will be
((M-m)/2,(N-n)/2)

[nazish zehra]

i can not adjust the coordinates.pro gram is not giving any error.i have problem with the coordinates and size of canvas only.

image size is 150*150 and i cannot adjust the size and location of canvas

[bvdet]

It is straightforward to determine the image size using PIL and calculate the splash screen position to center on the screen.

import Tkinter as tk
from PIL import Image

image_name = "10.gif"
image_size = Image.open(image_name).size
 
root = tk.Tk()
# show no frame
root.overrideredirect(True)
width = root.winfo_screenwidth()
height = root.winfo_screenheight()
x = (width-image_size[0])/2.
y = (height-image_size[1])/2.

root.geometry('%dx%d+%d+%d' % (image_size[0], image_size[1], x, y))

image = tk.PhotoImage(file=image_name)
canvas = tk.Canvas(root, height=image_size[1], width=image_size[0], bg="white")
canvas.create_image(0, 0, anchor="nw", image=image)
canvas.pack()

root.after(5000, root.destroy)
root.mainloop()

[nazish zehra]

thanks alot.It works.you hav solved my problem

[nazish zehra]

now splash problem is solved but when i call this splash program from another program, splash is shown but gui of the program i hav made is not shown.program runs without any error ,shows splash but doesnot show the interface i hav made in that program

import splashprog
splashprog.splash()#for splash screen
root = Tk()#my program interface
.....#code of my program
root.mainloop()

[dwblas]

You want to put the code in a function, and call the function from the other program. You may have to send "root" to the other program, and use a Toplevel in the first program, depending on what your second program does.

import splashprog
 root = Tk()#my program interface
 splashprog.splash(root)     #for splash screen
 .....#code of my program
 root.mainloop()

An example of the type that I use

##------------- first program --------------------------
class splash():
    def __init__(self, tk, root):
        self.new_gui = tk.Toplevel(root)
        lab = tk.Label(self.new_gui, text="test of calling another program")
        lab.pack()

    def stop(self):
        print  "stop called"
        self.new_gui.destroy()

##------------- second program --------------------------
try:
    import Tkinter as tk     ## Python 2.x
except ImportError:
    import tkinter as tk     ## Python 3.x

import first_prog
root=tk.Tk()
n=first_prog.splash(tk, root)
root.after(2000, n.stop)    ## destroy "splash" after 2 seconds
root.after(3000, root.quit) ## root remains 1 second longer
root.mainloop()