pythonsvgpygamewidgetpygame-surface

SVG rendering in a Pygame application. Prior to Pygame 2.0, Pygame did not support SVG. Then how did you load it?


In a Pygame application, I would like to render resolution-free GUI widgets described in SVG.

How can I achieve this?

(I like the OCEMP GUI toolkit, but it seems to be bitmap-dependent for its rendering.)


Solution

  • This is a complete example which combines hints by other people here. It should render a file called test.svg from the current directory. It was tested on Ubuntu 10.10, python-cairo 1.8.8, python-pygame 1.9.1, python-rsvg 2.30.0.

    #!/usr/bin/python
    
    import array
    import math
    
    import cairo
    import pygame
    import rsvg
    
    WIDTH = 512
    HEIGHT = 512
    
    data = array.array('c', chr(0) * WIDTH * HEIGHT * 4)
    surface = cairo.ImageSurface.create_for_data(
        data, cairo.FORMAT_ARGB32, WIDTH, HEIGHT, WIDTH * 4)
    
    pygame.init()
    window = pygame.display.set_mode((WIDTH, HEIGHT))
    svg = rsvg.Handle(file="test.svg")
    ctx = cairo.Context(surface)
    svg.render_cairo(ctx)
    
    screen = pygame.display.get_surface()
    image = pygame.image.frombuffer(data.tostring(), (WIDTH, HEIGHT),"ARGB")
    screen.blit(image, (0, 0)) 
    pygame.display.flip() 
    
    clock = pygame.time.Clock()
    while True:
        clock.tick(15)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                raise SystemExit