Bug 768635 - Attached ODP with .eps images hangs for seconds when editing something
Attached ODP with .eps images hangs for seconds when editing something
Product: Fedora
Classification: Fedora
Component: libreoffice (Show other bugs)
x86_64 Linux
unspecified Severity medium
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Assigned To: Caolan McNamara
Fedora Extras Quality Assurance
Depends On:
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Reported: 2011-12-17 09:46 EST by Milan Bouchet-Valat
Modified: 2012-08-08 13:30 EDT (History)
6 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Last Closed: 2012-08-07 11:39:13 EDT
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Attachments (Terms of Use)
Testcase (66.47 KB, application/vnd.oasis.opendocument.presentation)
2011-12-17 09:46 EST, Milan Bouchet-Valat
no flags Details

  None (edit)
Description Milan Bouchet-Valat 2011-12-17 09:46:06 EST
Created attachment 548212 [details]

The attached ODP presentation takes ages to load, and LO hangs for about 10s every time you change something in it (like moving an object or even selecting slides). I could not test with 3.5, but if you open it you'll soon figure out if it's still present. ;-)

The problem seems to be caused by the .eps images, since the more I add to the document, the longer the hangs lasts; and on start, image previews only appear when LO stops working. So my conclusion is that LO redraws these images every time something is changed in the whole doc, which doesn't make sense (these images are slow to render, that's OK, but they should only be drawn when needed).

What's interesting is that copying all the slides to a new files, I could work without experiencing the slow down. But once I saved, closed and reopened the new file, it started making LO hang again.

I'm using LO
Comment 1 Caolan McNamara 2012-01-10 09:43:18 EST
The delay will probably be due to running ghostscript to generate a preview image for each .eps. Some software puts a preview image into the eps in which case LibreOffice doesn't use ghostscript to generate one. 

Ideally we'd do something less stupid
Comment 2 Milan Bouchet-Valat 2012-01-10 12:17:37 EST
I understand previews need to be generated on start, but the really pathological issue is that even moving a simple text frame unrelated to the .eps images takes ages. So there's also a problem with when to generated the previews.
Comment 3 Fedora End Of Life 2012-08-07 11:39:15 EDT
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Comment 4 Milan Bouchet-Valat 2012-08-08 13:30:31 EDT
Fixed in Fedora 17, actually.

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