Changes between Initial Version and Version 1 of TextImageView

Timestamp:

Jun 30, 2006, 8:31:33 PM (18 years ago)

Author:

anonymous

Comment:

--

TextImageView

@@ +1 @@
+
+== Generating Dynamic Text Images==
+ 
+Taken from Jacobian.org
+[http://www.jacobian.org/2006/jun/30/improved-text-image-view/]
+
+
+
+{{{
+import md5
+from django.conf import settings
+from django.http import (HttpResponse,
+                         HttpResponseNotModified,
+                         HTTPResponseForbidden)
+import Image, ImageFont, ImageDraw
+
+def view_header(request, fontalias):
+    try:
+        fontfile = settings.DYNAMIC_FONT_ALIASES[fontalias]
+    except:
+        return HttpResponseForbidden("font alias not supported")
+
+    if request.GET.has_key('text'):
+        header = request.GET['text']
+    else:
+        header = 'Hello world'
+
+    etag = md5.new(header).hexdigest()
+    if request.META.get("HTTP_IF_NONE_MATCH") == etag:
+        return HttpResponseNotModified()
+
+    imf = ImageFont.truetype(fontfile, 20)
+    size = imf.getsize(header)
+    im = Image.new("RGB", size)
+    draw = ImageDraw.Draw(im)
+    draw.text((0, 0), header, font=imf)
+
+    response = HTTPResponse(mimetype="image/png")
+    im.save(response, "PNG")
+    response["e-tag"] = etag
+    return response
+
+}}}