[Poppler-bugs] [Bug 24987] PDF not displaying properly in newer version of evince

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=24987





--- Comment #1 from Adrian Johnson <ajohnson at redneon.com>  2009-11-09 04:37:40 PST ---
Created an attachment (id=31064)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31064)
patch

The the PDF is using two glyphs from the Type 3 font to draw the barcode. One
glyph draws a black rectangle, the other a white rectangle. 

The type 3 charproc for each glyph looks something like:

75 0 d0
6 0 69 2000 re
1.0 g
f

and 

75 0 d0
4 0 71 2000 re
0.0 g
f

The problem is the "1.0 g" and "0.0 g". Cairo doesn't support colors in the
user font render callback. Any mark made will be rendered as the font color. So
both the white and black rectangle are rendered as black resulting in one big
black blob.

I'm not sure how we can support gray levels in the Type 3 glyphs. For now I
attach a patch makes the barcode render correctly by disabling filling/stroking
inside Type 3 glyphs when the gray level is > 0.5.


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