I went through the patch written by me and unfortunately I can not make it so that it returns the same result as before. I've separated axes in which it searches for immediate up/down/left/right neighbours, sorted them and found the neighbours by single pass (+ number of possible neighbour candidates in the other axis for given block, which should be sqrt(n) in average case).
The difference is that the patch searches for right-down neighbour by looking at down neighbour of its right neighbour and at the right neighbour of its down neighbour. If they match then it selects it as the right-bottom neighbour. Previous version just searched for the closest block which is to the right of the block and below the block (and looking at the code, the result could depend on order of the blocks in the searched array). Modifying the patch so that it would return the same results as without it would cost the whole efficiency. Anyway, the efficiency improvement of my patch is not as big as the one from Brian so you can reject it (but I think that it improves the conversion :) ). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to poppler in Ubuntu. https://bugs.launchpad.net/bugs/33288 Title: Evince doesn't handle columns properly Status in Poppler: Confirmed Status in poppler package in Ubuntu: Fix Released Status in poppler source package in Lucid: Fix Released Bug description: So, now that RC is here, let's propose it as an SRU. I've pushed it in lucid-proposed. The debdiff is poppler_0.12.4-0ubuntu4_2_0.12.4-0ubuntu5.debdiff attached there for information. I'm removing old debdiff to avoid confusion. poppler (0.12.4-0ubuntu5) lucid-proposed; urgency=low * debian/patches/11_column_selection.patch: - backport from upstream git commit to fix wrong selection in pdf when containing tables, long text, broken flow and so on. (fixing most of known issues with selection in pdf) (LP: #33288) ---------------------------- ---------------------------- When making a multi column selection from a PDF like this: http://www.specialist-games.com/mordheim/assets/lrb/1Rules.pdf And pasting the result into OpenOffice.org the columns are not maintained. The results unusable because the text from both columns becomes mixed. Please note, this is not a PDF problem, using Adobe Acrobat Reader 7.x under Windows does properly copy-paste columned text over to OpenOffice.org. Regards, Pascal de Bruijn To manage notifications about this bug go to: https://bugs.launchpad.net/poppler/+bug/33288/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
