Bug 14619

Summary:	Poppler-cairo not displaying pdf correctly
Product:	poppler	Reporter:	Pedro Villavicencio <pvillavi>
Component:	cairo backend	Assignee:	poppler-bugs <poppler-bugs>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	mpsuzuki
Version:	unspecified
Hardware:	x86 (IA32)
OS:	All
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:	27456
Bug Blocks:
Attachments:	Fix-test-for-rotation.patch

Description Pedro Villavicencio 2008-02-22 03:49:44 UTC

This report has been filed here:

https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/193927

"Evince does not display a pdf correctly. It seems like a layer or something is missing.
I have no idea of how the pdf was made but I have attached the example.pdf to this bug report. I will also attach screenshots from evince and also xpdf (which does display it correctly)."

http://launchpadlibrarian.net/12128520/example.pdf
http://launchpadlibrarian.net/12128526/evince.png
http://launchpadlibrarian.net/12128527/xpdf.png

Thanks,

Comment 1 Albert Astals Cid 2008-02-22 14:31:10 UTC

Can reproduce it on cairo backend, not with splash

Comment 2 Carlos Garcia Campos 2009-11-18 09:06:52 UTC

This is another bug in drawImageMaskPrescaled :-(

Comment 3 Patrick 2012-01-19 06:32:54 UTC

Created attachment 55785 [details] [review]
Fix-test-for-rotation.patch

This patch fixes the bug, which stems from the wrong assumption
that rotation can be detected by testing (matrix.xy == 0 && matrix.yx == 0) only.

Defined LOG_CAIRO in CairoOutputDev.cc and checked the output to
make sure the test works, with the old attached pdf: Edited it in vim and changed /Rotate 180 to 0, 90 and 270 ("attempting to reconstruct xref table" succeeded...). Prints "drawImageMaskPrescaled" if the mask is not rotated, and "drawImageMask" if it is, as intended.

Comment 4 Carlos Garcia Campos 2012-01-20 06:37:19 UTC

Comment on attachment 55785 [details] [review]
Fix-test-for-rotation.patch

Review of attachment 55785 [details] [review]:
-----------------------------------------------------------------

Pushed to git master, thanks!

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