Issue 124880 - Draw fails to recognize alpha layer (transparency) of .tiff
Summary: Draw fails to recognize alpha layer (transparency) of .tiff
Status: CONFIRMED
Alias: None
Product: Draw
Classification: Application
Component: formatting (show other issues)
Version: 3.3.0 or older (OOo)
Hardware: All All
: P3 Normal (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-05-13 01:45 UTC by hanson.alex
Modified: 2014-06-24 14:45 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: 4.1.0
Developer Difficulty: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this issue.
Description hanson.alex 2014-05-13 01:45:55 UTC 
Draw does not seem to be able to import the alpha layer of a .tiff. The background appears as an off-grey color. Unable to change the fill through picture fill properties.

Picture inserted using Inset -> Picture -> From File...
Comment 1 hanson.alex 2014-05-13 18:15:27 UTC 
To expand on this... I'm using 4.0.1 on Windows. Today I tried libre office on a different computer and it worked just fine.
Comment 2 mroe 2014-05-14 06:22:08 UTC 
Please attach a sample document with a .tiff that easy shows the described behaviour.
Comment 3 hanson.alex 2014-05-14 19:12:23 UTC 
see document at:
https://www.dropbox.com/s/qyec8nbuosts8lb/png-error.odg
Comment 4 mroe 2014-05-14 20:07:01 UTC 
Can confirm that the transparency of a .tiff is not respected. Same bitmap as .png makes no problem.
Comment 5 Armin Le Grand 2014-06-20 11:56:27 UTC 
Adding Herbert to CC. Herbert, do you know more about the tiff filter?
Comment 6 Armin Le Grand 2014-06-24 13:18:24 UTC 
Excerpt from Tiff Wikipedia page : 'Very few applications correctly process TIFF files with alpha channels'. Interesting...
Comment 7 Armin Le Grand 2014-06-24 14:45:31 UTC 
@hanson.alex: The link in comment 3 is dead, could you please add the TIFF in question directly as attachment please?