In this article we will see how we can flip the window buffer 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). Flipping means to swap the OpenGL front and back buffers. Flipping method on a double-buffered window to update the visible display with the back buffer. The contents of the back buffer is undefined after this operation. Windows are double-buffered by default. Flipping is called automatically by EventLoop after the on_draw() event.
We can create a window with the help of command given below
pyglet.window.Window(width, height, title)
In order to create window we use flip method with the window object
Syntax : window.flip()
Argument : It takes no argument
Return : It returns None
Below is the implementation
Python3
# importing pyglet moduleimport pygletimport pyglet.window.key# width of windowwidth = 500# height of windowheight = 500# caption i.e title of the windowtitle = "Geeksforneveropen"# creating a windowwindow = pyglet.window.Window(width, height, title)# text text = "neveropen"# creating a label with font = times roman# font size = 36# aligning it to the centerlabel = 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.eventdef on_draw(): # clearing the window window.clear() # drawing the label on the window label.draw() # key press event @window.eventdef on_key_press(symbol, modifier): # key "F" get press if symbol == pyglet.window.key.F: # flipping the window buffer window.flip() # start running the applicationpyglet.app.run() |
Output :
Window get flipped when key “F” get pressed, it basically refresh the screen
