On 8/16/05, Bengt Thuree <[EMAIL PROTECTED]> wrote: > Hej > > F-Spot stores all timestamps as UTC.
Yeah, I looked briefly at the code and found a comment about that. But I can't quite figured out how it is supposed to work. I looked at one image that I have taken. The exif-information says that the image was taken at 20:49 on 2005-05-21. The modification time of the file is also 20:49. The f-spot gui says that the image was taken 18:49. The sqlite database has time as 1116697783. If I use Perl's localtime (I'm a perl-guy...) it says that it equals 19:49, but I'm not sure about how localtime handles timezones. The correct interpretation would be 22:49 in the +0200 timezone, since the picture was taken in Stockholm during daylight savings time and my camera is set to UTC. What does the time displayed by f-spot mean? Should it be the local time where the picture was taken, the local time of f-spot at the time the image was taken or something else? One solution is to store a display-timezone along with the time. We could then show the time of my picture as 2005-05-21 22:49 +0200 and a picture taken in the New York at the same time would show 2005-05-21 16:49 -0400. Both pictures would have the same utc-time stored in the database, but different values for the display-timezone field. /Mattias > > -Bengt > > > On Ti, 2005-08-16, 04:21 am, Mattias Holmlund skrev: > > On 8/15/05, Bengt Thuree <[EMAIL PROTECTED]> wrote: > >> Hej > > Hej, > > > >> > >> Here is the first release of the ChangePhotoTime routine. > >> > >> For a teaser, please check the GUI at > >> www.thuree.com:8080/bt/testing/F-Spot_TimeZone.jpg > >> > >> Please test it and do come with suggestions for features/enhancements. > > > > I have given up on remembering to change the time on my camera every > > time I travel to a different timezone. I always end up forgetting to > > change it back... Instead, I have set the camera to use UTC time. This > > means that the timestamp on each image is always a correct UTC time. I > > haven't quite figured out how I would like f-spot to handle this. Some > > kind of TimeZone-field where I can keep track of in what timezone the > > picture was taken perhaps. > > > > It might be a good idea to adopt UTC times for all images in F-Spot. > > You don't necessarily have to set the time to UTC in your camera if > > you don't want to, but it might make sense for f-spot to always store > > timestamps in UTC. If f-spot stores the local time where the picture > > was taken, the picture you took before you boarded the plane might > > have an earlier timestamp than the picture you took when the plane > > landed. > > > > /Mattias > > > >> > >> Gnome HIG I am not sure I am following, neither proper translation > >> standards. > >> This is my second try at coding in Gnome and C# so bear with me please > >> :) > >> > >> The command I used to create the diff files were as follows > >> diff -Naur ../f-spot-0.0.13.orig/src/Makefile src/Makefile > > >> Makefile.diff > >> diff -Naur ../f-spot-0.0.13.orig/src/MainWindow.cs src/MainWindow.cs > > >> MainWindow.cs.diff > >> diff -Naur ../f-spot-0.0.13.orig/src/PhotoStore.cs src/PhotoStore.cs > > >> PhotoStore.cs.diff > >> diff -Naur ../f-spot-0.0.13.orig/src/f-spot.glade src/f-spot.glade > > >> f-spot.glade.diff > >> > >> and then I just copied the ChangePhotoTime.cs file > >> > >> The changes I introduced to PhotoStore consist of one new method > >> (CommitTime (DbItem item)) > >> which updates only the time (thought it was uneccasary to call commit > >> and > >> modify tags and all). > >> > >> Good luck > >> > >> /Bengt > >> > >> p.s. > >> I have based my modifications on F-Spot version 0.0.13 > >> > >> > >> ----- > >> > >> A debug trace from one of my runs... > >> > >> [EMAIL PROTECTED]:~/development/f-spot/f-spot-0.0.13.TimeZone$ f-spot > >> Photo 20030426_Jasmine_ 006.jpg, Old time 23/04/2003 7:11:06 AM, New > >> time > >> 24/04/2003 7:10:06 AM > >> Photo 20030819_Jasmine_ 009.jpg, Old time 16/08/2003 10:50:27 AM, New > >> time > >> 17/08/2003 10:49:27 AM > >> Photo 20030822_Jasmine 002a.jpg, Old time 21/08/2003 4:36:45 AM, New > >> time > >> 22/08/2003 4:35:45 AM > >> Photo 20040131_JadeJasmine_China_1.JPG, Old time 30/01/2004 2:29:05 AM, > >> New time 31/01/2004 2:28:05 AM > >> Photo 20040629 183759_Linköping_PrincessJasmine_004.JPG, Old time > >> 28/06/2004 8:38:59 AM, New time 29/06/2004 8:37:59 AM > >> Photo 20040717 125752_Loftahammar_AakesSummerHouse.JPG, Old time > >> 16/07/2004 2:58:52 AM, New time 17/07/2004 2:57:52 AM > >> Photo 20040723 142528_Stockholm_Skansen_Jasmine_Bengt_005.JPG, Old time > >> 22/07/2004 4:26:28 AM, New time 23/07/2004 4:25:28 AM > >> Photo 20040905181719_Yokohama_SushiTime_Jasmine_000.JPG, Old time > >> 4/09/2004 8:18:19 AM, New time 5/09/2004 8:17:19 AM > >> Photo 20041005130110_Mohnani_Jasmine_Bengt.JPG, Old time 4/10/2004 > >> 3:02:10 > >> AM, New time 5/10/2004 3:01:10 AM > >> > >> > >> > >> > >> -- > >> Bengt Thuree [EMAIL PROTECTED] www.thuree.com/bt > >> > >> _______________________________________________ > >> F-spot-list mailing list > >> [email protected] > >> http://mail.gnome.org/mailman/listinfo/f-spot-list > >> > >> > >> > >> > > _______________________________________________ > > F-spot-list mailing list > > [email protected] > > http://mail.gnome.org/mailman/listinfo/f-spot-list > > > > > > > -- > Bengt Thuree [EMAIL PROTECTED] www.thuree.com/bt > > _______________________________________________ > F-spot-list mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/f-spot-list > _______________________________________________ F-spot-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/f-spot-list
