[reportlab-users] Non-JPEG CMYK images

[Robin Becker]

Stevens, Ian wrote:
.........

>  

> What follows is the patch I'm using.  I don't know exactly what PIL

> image modes of '1', 'L', 'RGBX' or 'RGBA' mean in this context, so those

> modes get converted to 'RGB':

>  

> 98c98,107

> <         myimage = image.convert('RGB')

> ---

>>         # Use the colorspace in the image

>>         mode = image.mode

>>         if mode == 'CMYK':

>>             myimage = image

>>             colorSpace = 'DeviceCMYK'

>>         else:

>>             myimage = image.convert('RGB')

>>             colorSpace = 'RGB'

>>

> 104c113

> <         imagedata=['BI /W %d /H %d /BPC 8 /CS /RGB /F [/A85 /Fl] ID' %

> (imgwidth, imgheight)]

> ---

>>         imagedata=['BI /W %d /H %d /BPC 8 /CS /%s /F [/A85 /Fl] ID' %

> (imgwidth, imgheight, colorSpace)]

> 

.......
it's a bit hard to figure out what you're patching without either of the 
filename and or svn version :)

I looked in the latest trunk code and the ImageReader object has this
if sys.platform[0:4] == 'java':
........
else:
	im = self._image
	mode = self.mode = im.mode
	if mode=='RGBA':
		self._dataA = ImageReader(im.split()[3])
		im = im.convert('RGB')
		self.mode = 'RGB'
	elif mode not in ('L','RGB','CMYK'):
		im = im.convert('RGB')
		self.mode = 'RGB'
self._data = im.tostring()

so in the PIL branch we're trying to preserve the existing mode. Are you saying 
that even so the PIL images get converted somewhere else to RGB? I suspect that 
would not be intended, but this image stuff is fairly horrendous.
-- 
Robin Becker