Tickets :: [#4648] Horde PNG Graphics Broken in IE7

6.0.0-beta1

7/22/25

Summary	Horde PNG Graphics Broken in IE7
Queue	Horde Base
Queue Version	3.1.3
Type	Bug
State	Not A Bug
Priority	2. Medium
Owners
Requester	matthew.fisch (at) yahoo (dot) com
Created	11/11/2006 (6828 days ago)
Due	10/31/2000 (9030 days ago)
Updated	11/12/2006 (6827 days ago)
Assigned	11/12/2006 (6827 days ago)
Resolved	11/12/2006 (6827 days ago)
Github Issue Link
Github Pull Request
Milestone
Patch	No

11/12/2006 11:21:26 PM	Jan Schneider	Comment #7 State ⇒ Not A Bug Due ⇒ 10/31/2000	Reply to this comment
Well, we already had to use indexed PNGs because IE6 doesn't support alpha transparency. I wouldn't be surprised if these are exactly the icons that cause problems with IE7 now. IE sucks.

11/12/2006 08:40:10 PM	matthew (dot) fisch (at) yahoo (dot) com	Comment #6	Reply to this comment
Sorry. Runs just fine here. Are you using 256 colors on your desktop or is it only a screenshot saved this way? Looks like you've nailed it. Theres a problem with IE/PNG's running in 256 color mode (as IE is from this thinclient). I tried it from another machine running 32-bit color and everything looks fine. Not all PNG's are affected, and when I convert to jpg or bmp and back they look fine. Maybe a problem with transparencies? I guess this could be relegated to be a Microsoft problem, the number of users it affects is probably small. I've heard IE7 PNG support is flaky. Although, if theres an easy fix without breaking transparencies theres no point in waiting for the fix from redmond that never comes.

11/12/2006 10:13:17 AM	vilius (at) lnk (dot) lt	Comment #5	Reply to this comment
Sorry. Runs just fine here. Are you using 256 colors on your desktop or is it only a screenshot saved this way?

11/12/2006 06:16:42 AM	matthew (dot) fisch (at) yahoo (dot) com	Comment #4	Reply to this comment
I haven't seen this. Has anyone else? If I should provide more information about the client computers I have used let me know what you need. I've seen this on XP PRO SP2, and 2000 or 2003 server (would have to double check).

11/12/2006 03:19:48 AM	Chuck Hagenbuch	Comment #3 State ⇒ Feedback Due ⇒ 11/30/2000 Priority ⇒ 2. Medium	Reply to this comment
I haven't seen this. Has anyone else?

11/11/2006 04:54:54 AM	matthew (dot) fisch (at) yahoo (dot) com	Comment #2	Reply to this comment
Using ImageMagick's 'convert' utility I was able to fix individual images by converting to jpeg and back to png. This wouldn't be my desired fix since the images end up larger in filesize. ps. Converting to gif and back (default options) did not work.

11/11/2006 04:34:38 AM	matthew (dot) fisch (at) yahoo (dot) com	Comment #1 Priority ⇒ 3. High Type ⇒ Bug Summary ⇒ Horde PNG Graphics Broken in IE7 Due ⇒ 12/31/2005 Queue ⇒ Horde Base New Attachment: bugshot.png State ⇒ Unconfirmed	Reply to this comment
Most of Horde's graphics (since the conversion to PNG?) have been broken in IE7. Not sure why IE7 doesn't like these PNG's, but it affects horde base/framework and imp (most recent versions). Ive tested this on my own updated horde/imp installs, and horde installs of others using IE7.0 release on several client machines, all appear to have the same problem. Since IE7 is now release code (and about to be pushed out in windows update) this is a big issue. A workaround might involve simply reformatting all PNG's to view correctly in IE7. Attached is a screenshot showing IE7 viewing bugs.horde.org (with PNG bug).