PYGLET – On Resize Event

In this article we will see how we can trigger on resize event in PYGLET module in python. Pyglet is easy to use but powerful library for developing visually rich GUI applications like games, multimedia etc. A window is a “heavyweight” object occupying operating system resources. Windows may appear as floating regions or can be set to fill an entire screen (fullscreen).This event get called when the window was resized. The window will have the GL context when this event is dispatched; there is no need to call switch_to in this handler. We can change the size of the window with the help of set_size method.

We can create a window with the help of command given below 

pyglet.window.Window(width, height, title)

Below is the syntax of the on resize event, this method get called when this event is triggered 

@window.event       
def on_resize(width, height):
    print("Window Resized")

Below is the implementation  

Python3

# importing pyglet module
import pyglet
import pyglet.window.key

# width of window
width = 500

# height of window
height = 500

# caption i.e title of the window
title = "Geeksforgeeks"

# creating a window
window = pyglet.window.Window(width, height, title)

# text
text = "GeeksforGeeks"

# creating a label with font = times roman
# font size = 36
# aligning it to the center
label = pyglet.text.Label(text,
                          font_name ='Times New Roman',
                          font_size = 36,
                          x = window.width//2, y = window.height//2,
                          anchor_x ='center', anchor_y ='center')

new_label = pyglet.text.Label(text,
                          font_name ='Times New Roman',
                          font_size = 10,
                          x = 25, y = 25)

# on draw event
@window.event
def on_draw():


    # clearing the window
    window.clear()

    # drawing the label on the window
    label.draw()


# key press event
@window.event
def on_key_press(symbol, modifier):

    # key "C" get press
    if symbol == pyglet.window.key.C:

        print("Key C is pressed")


# on resize event
@window.event
def on_resize(width, height):

    # printing some message
    print("Window Resized")
    print("New Size : ", end = "")
    print(width, height)




# image for icon
img = image = pyglet.resource.image("logo.png")

# setting image as icon
window.set_icon(img)

# moving window
window.set_size(300, 400)

# start running the application
pyglet.app.run()

Output :

Window Resized
New Size : 300 400