https://bugs.documentfoundation.org/show_bug.cgi?id=115808
Bug ID: 115808
Summary: Impress displays images differently on different
machines (screen resolutions?)
Product: LibreOffice
Version: 5.4.5.1 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Impress
Assignee: [email protected]
Reporter: [email protected]
When inserting and cropping images (they don't always have to be cropped for
this to happen) in a presentation on one machine and then opening the same .odp
file on another machine with the exact same Linux OS and exact same version of
LO, the figures appear mangled. Not every single figure is affected this way,
but usually a number of them are. In some cases it is both in the 'slide
sorter' view and also in the 'normal view' of the slide. The 'slide sorter'
thumbnails get redrawn after working with the presentation and is merely
annoying. When the problem affects the slide in 'normal view' it's a deal
breaker of a problem.
This has been a long standing issue (many many years through StarOffice,
OpenOffice, Apache OpenOffice, and now LibreOffice). I have posted bug reports
before on this, but the problem persists and makes Impress extremely painful to
use.
The post here on the Apache OO forum may be the underlying issue, but I don't
know because I don't know how LO Impress deals with inserted figures, or
figures from other slides that are 'imported' and so on.
https://forum.openoffice.org/en/forum/viewtopic.php?f=10&t=73858
I try to always crop images outside of Impress and only import them after, but
this doesn't solve the problem. I have generally noticed that if I import
slides from .ppt or .pptx that the images import correctly in the LO Impress
session, but as soon as I save as .odp and reopen, either on a different
machine or the same machine, the images will be distorted.
I have a lot of general questions:
1. How does Impress read image data on an import of say .jpg or .png?
2. How does Impress save this data in the .odp file?
3. How does Impress read image data on an imported SLIDE from another Impress
presentation?
4. How does Impress read image data on an imported SLIDE from a .ppt or .pptx
presentation?
5. Is the screen resolution ever taken into account when doing any of the
above?
This issue is a show stopper for me and it really makes Impress unusable for
scientific presentations where there are multiple figures on every slide. If I
understand the answers to some of the questions above I may be able to provide
much better bug reports.
Finally, can I work directly with one of the developers who knows the internals
to help debug this issue?
-EM
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