[Poppler-bugs] [Bug 22473]

[James Cloos]

Albert> Well i did it by empirical testing, get the pdf remove the
Albert> /Matte[0 0 0] entry of the object 51 and see how the left "More
Albert> Text Here TBD" in Adobe Acrobat is rendered with the exact same
Albert> color we get in poppler.

Interesting.

Last night, working w/o any lights on, I was unable to discern any
difference at all between the two windows in the png.

Now that the sun is up, albeit still w/o any interior lighting, the
difference is easy to see.

Isn't colour fun?!

The reply was, of course, supposed to go to bugz-d rather than the
list.  But since it was wrong, I'm not going to correct that....

So, to handle Matte, the ref says the SMask's Width and Height have to
match the primary image's, so Matte should probably be checked for
earlier in the code than were the Matte comment is in Gfx.cc.

Should OutputDev::drawSoftMaskedImage() get another arg to pass the
Matte array?  Or should it be added to the GfxImageColorMap object?

Either way, it looks like dealing with it will certainly complicate
CairoOutputDev::drawSoftMaskedImage(), since it won't be able to use
cairo_mask() when there is a Matte array....

-JimC
-- 
James Cloos <cloos at jhcloos.com>         OpenPGP: 1024D/ED7DAEA6