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Some gifs changes their background when zoomed in/out
Posted: Wed Mar 14, 2007 4:35 pm
by zencd
Synopsys: some gifs changes their background when zoomed in/out
Reproduction:
1) Open this GIF in xnview 1.90.2 windows xp p2:
http://i18.tinypic.com/34ezy9f.gif (it's 100% of size at my PC)
2) It has unexpected black background (while the background is true "white" in windows std viewer)
3) zoom out (eg 70%) -- the background gets white
4) zoom to 100% or more -- it get black again
Re: Some gifs changes their background when zoomed in/out
Posted: Wed Mar 14, 2007 4:48 pm
by xnview
zencd wrote:Synopsys: some gifs changes their background when zoomed in/out
Reproduction:
1) Open this GIF in xnview 1.90.2 windows xp p2:
http://i18.tinypic.com/34ezy9f.gif (it's 100% of size at my PC)
2) It has unexpected black background (while the background is true "white" in windows std viewer)
3) zoom out (eg 70%) -- the background gets white
4) zoom to 100% or more -- it get black again
Try the 1.90.3
Posted: Wed Mar 14, 2007 4:51 pm
by zencd
the same result with 1.90.3
btw, 1.90.2 didn't found that update
Posted: Wed Mar 14, 2007 10:05 pm
by XnTriq
This seems to be related to the preference settings in View » View » Auto Image Size.
If the image isn't “shrunk” upon opening (No fit or Fit window to image) everything works just fine.
Posted: Tue May 22, 2007 8:15 pm
by XnTriq
Fixed in v1.91!
Posted: Tue May 22, 2007 8:24 pm
by zencd
not fixed for me, the things get even worse a bit with 1.91
1) just opened picture has the same unexpected black background as it was before
2) pressing zooming out, background stays the same black (new behaviour)
Posted: Tue May 22, 2007 9:15 pm
by XnTriq
Hello zencd,
would you please tell us what your settings are for
Auto Image Size and
High quality zoom (both options are located in
Tools »
Options... »
View »
View).
Posted: Tue May 22, 2007 9:25 pm
by zencd
"Auto Image Size" == fit to desktop, large only
cannot locate "High quality zoom"
Fine here
Posted: Tue May 22, 2007 9:27 pm
by Clo
—> zencd
Hello !
• I tested your sample at this moment in 1.91, it's displayed OK !
- I can zoom in - out - restore 1:1 scale - fit to window, the transparency remains perfectly,
I have always the BG colour of my “View” window…
• Same in the browser, as well as the thumb nail as for the preview, I can change the preview size at will, all is right…
- “High quality” is totally disabled here.
- “Use Transparency Index” is enabled.
KR
Claude
Clo
Posted: Tue May 22, 2007 9:31 pm
by zencd
okay; it's a very rare case anyway
Posted: Tue May 22, 2007 9:50 pm
by XnTriq
zencd wrote:cannot locate "High quality zoom"
You can see it on your screenshot. It's the field with the two checkboxes (“Reduce”/“Enlarge”).
I was able to reproduce this with Version 1.90.3, but no matter what I try, in v1.91 the bug doesn't occur anymore.
Posted: Tue May 22, 2007 10:03 pm
by marsh
zencd wrote:not fixed for me, the things get even worse a bit with 1.91
1) just opened picture has the same unexpected black background as it was before
2) pressing zooming out, background stays the same black (new behaviour)
The problem is fixed for me also- the following option is needed for sample:
Options... View>[x]Use transparent index (<=8 bits) or alpha channel
Hmm... you show that in picture.
Posted: Tue May 22, 2007 10:07 pm
by zencd
yes, the bug has gone when I
unchecked that "strange" checkbox ("Use transparent index...")
Posted: Wed Jun 06, 2007 11:57 pm
by Drahken
I can't reproduce this bug on 1.91, the background always remains white.
Are you certain your upgrade was successful? Have you checked info->about to make sure it says 1.91? Have you tried reinstalling 1.91 to a new folder, make sure you're not getting some sort of holdover bug from some old files?
