In this article we will see how we can trigger window on draw 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). The EventLoop will dispatch this event when the window should be redrawn. This will happen during idle time after any window events and after any scheduled functions were called. The window will already have the GL context, so there is no need to call switch_to. The window’s flip method will be called after this event, so your event handler should not.
We can create a window with the help of command given below
pyglet.window.Window(width, height, title)
Below is the syntax of the window on draw event, this method get called when this event is triggered
@window.event def on_draw(): print("Window Draw Event")
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 = "Geeksforneveropen" # creating a window window = pyglet.window.Window(width, height, title) # text text = "neveropen" # 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' ) # on draw event @window .event def on_draw(): # printing some message print ("Window Draw event called") # clearing the window window.clear() # drawing the label on the window label.draw() # key press event @window .event def on_key_press(symbol, modifier): print ("nn") # key "C" get press if symbol = = pyglet.window.key.C: # close the window window.close() # image for icon img = image = pyglet.resource.image("logo.png") # setting image as icon window.set_icon(img) # start running the application pyglet.app.run() |
Output :
Window Draw event called