I tried subclassing it this way.. The purpose here is to just get it
working for JPEG
class MyImageReader(ImageReader):
def __init__(self, filep):
if isinstance(filep,ImageReader):
self.__dict__ = fileName.__dict__ #borgize
return
#the relevant engine.
self.fileName = "Noname"
self.format = 'JPEG'
self._image = filep
self._width = None
self._height = None
self._transparent = None
self._data = filep
self._dataA=None
#if _isPILImage(fileName):
self.fp = filep
from reportlab.pdfbase.pdfutils import readJPEGInfo
self._width,self._height,c=readJPEGInfo(self.fp)
self.jpeg_fh = self._jpeg_fh
self.fp.seek(0)
class PdfHandler(webapp.RequestHandler):
def get(self):
self.response.headers['Content-Type'] = 'application/pdf'
self.response.headers['Content-Disposition'] =
'filename=somefilename.pdf'
p = canvas.Canvas(self.response.out, pagesize=A4)
.
.
.
graphtoembed = urlfetch.fetch("http://somedomain.ext/images/
test.jpg")
img_fp = StringIO(graphtoembed.content)
img_obj = MyImageReader(img_fp)
p.drawInlineImage(img_obj, 200,800)
p.showPage()
p.save()
And this results in
.
.
File "/usr/lib/python2.5/site-packages/reportlab/pdfbase/pdfdoc.py",
line 566, in format
s.decode('pdfdoc')
File "/usr/lib/python2.5/site-packages/reportlab/pdfbase/
rl_codecs.py", line 1022, in _rl_codecs
ImportError: No module named pdfmetrics
I have no clue whats happening here... In ususal way of reportlab
(where file is loaded from filesystem , passing just filename to
drawImage) I was never asked for pdfmetrics lib.
Any help....
On Jan 12, 8:08 pm, djidjadji <djidja...@gmail.com> wrote:
> Why don't you subclass ImageReader.
> This class contains the image Blob and serves it like an ImageReader.
> Just implement the ImageReader methods needed for drawing.
>
> 2009/1/11 NewPyHacker <abhishek.parol...@gmail.com>:
>
>
>
> > Hi,
> > I spent a lot of time trying to figure out ways to embed images in
> > pdf , I tried all sorts of stuff and hacks but stuck at this problem.
>
> > 1.) I want to embed a google chart
> >http://chart.apis.google.com/chart?cht=p3&chd=t:60,40&chs=250x100&chl...World
> > 2.) hence I do: graphtoembed = urlfetch.fetch("http://
> > chart.apis.google.com/blah....blah")
> > 3.) problem is, Reportlab's drawImage requires a file name to embed
> > this image or can take ImageReader object (which in turn asks for
> > localfile name in constructor)
> > 4.) How should I pass image content read from urlfetch to reportlab
> > while I am not allowed to dynamically create/store files in app
> > engine?
>
> > Even just for a test if I do this for static images,
> > path = os.path.join(os.path.dirname(__file__), 'static/images/
> > test.gif')
> > img_obj = ImageReader(path)
> > canvas.drawImage(img_obj, 200,800)
>
> > I get this
> > Cannot open resource "/base/data/home/apps/onepageresume
> > [blah....blah]"
>
> > Please show me direction... The goal is simple , just to retrieve
> > images from google charts and embed in a pdf...
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