Using PIL with Django

Here’s a simple django view which creates a PIL image on the fly, and returns it as a PNG image:

from django.utils.httpwrappers import HttpResponse


from PIL import Image





import random


INK = "red", "blue", "green", "yellow"





def image(request):





# ... create/load image here ...


image = Image.new("RGB", (800, 600), random.choice(INK))





# serialize to HTTP response


response = HttpResponse(mimetype="image/png")


image.save(response, "PNG")


return response

 

To draw things on the fly, you can use either PIL’s ImageDraw module, or the module:

from django.utils.httpwrappers import HttpResponse


from PIL import Image


from aggdraw import Draw, Pen, Brush, Font





import random





def graphics(request):





image = Image.new("RGB", (800, 600), "white")


draw = Draw(image)





# ... draw graphics here ...


for i in range(20):


x0 = random.randint(0, image.size[0])


y0 = random.randint(0, image.size[1])


x1 = random.randint(0, image.size[0])


y1 = random.randint(0, image.size[1])


draw.rectangle((x0, y0, x1, y1), Pen(random.choice(INK), 5))





draw.flush()





response = HttpResponse(mimetype="image/png")


image.save(response, "PNG")


return response

seal 2008-11-06 09:32 发表评论