Bug 137191 - I'd like to rotate only the thumbnail of an image (and not allow rotate raw image)
Summary: I'd like to rotate only the thumbnail of an image (and not allow rotate raw i...
Status: RESOLVED FIXED
Alias: None
Product: digikam
Classification: Applications
Component: Thumbs-RAW (show other bugs)
Version: 0.9.2
Platform: Compiled Sources Linux
: NOR wishlist
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks: 196383
  Show dependency treegraph
 
Reported: 2006-11-11 12:13 UTC by Simon Oosthoek
Modified: 2017-07-27 10:56 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In: 2.6.0


Attachments
part of the album window showing thumbs of raw images upside down (129.66 KB, image/png)
2006-11-11 12:14 UTC, Simon Oosthoek
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Simon Oosthoek 2006-11-11 12:13:03 UTC
Version:           Revision: 603502 (using KDE Devel)
Installed from:    Compiled sources
Compiler:          gcc (GCC) 4.1.2 20060901 (prerelease) (Debian 4.1.1-13) 
OS:                Linux

I've seen quite a few bugreports (like 131603 or 127577) for thumbnails and rotation and not showing correctly, this is more of a suggestion to fix things manually sort of...

Some of the thumbnails of raw images (CRW) are showing up rotated 180 deg. I'm not sure if it's the orientation of the camera or some other factor, but it's very odd. I'd like to be able to rotate the thumbnail to show up right.
Strangely, opening the image in the editor gives me a right side up version of the image and also the whitebalance and gamma is immediately adjusted, I'm not sure if that's something I did or the default setting (could be more clear)

Finally, isn't it strange to modify the raw image at all? I see it as the negative in a film camera, so you don't change that in any way. I wouldn't offer the rotate image option in the right-mouse-menu with raw images, but instead allow the thumbnail to be rotated.

I'll attach a fragment of my album window to show the problem.
Comment 1 Simon Oosthoek 2006-11-11 12:14:02 UTC
Created attachment 18497 [details]
part of the album window showing thumbs of raw images upside down
Comment 2 Arnd Baecker 2007-06-12 20:53:00 UTC
There have been several bugfixes concerning image rotation.
In particular, the two bugs mentioned above have been fixed by now.

Could you maybe try with a recent digikam 0.9.2-beta3 to see
if things have improved for you?

Many thanks in advance,

Arnd
Comment 3 Simon Oosthoek 2007-06-13 12:40:19 UTC
sorry, I'm having trouble building beta3 on kubuntu feisty :-(

make[4]: Entering directory `/home/simon/src/digikam-0.9.2-beta3/digikam/libs/dmetadata'
if /bin/bash ../../../libtool --silent --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I. -I../../.. -I../../../digikam/libs/dimg -I../../../digikam/digikam   -I/usr/include/kde -I/usr/share/qt3/include -I.   -DQT_THREAD_SUPPORT  -D_REENTRANT  -Wno-long-long -Wundef -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -O2 -Wformat-security -Wmissing-format-attribute -Wno-non-virtual-dtor -fno-exceptions -fno-check-new -fno-common -DQT_CLEAN_NAMESPACE -DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION -DQT_CLEAN_NAMESPACE  -MT dmetadata.lo -MD -MP -MF ".deps/dmetadata.Tpo" -c -o dmetadata.lo dmetadata.cpp; \
        then mv -f ".deps/dmetadata.Tpo" ".deps/dmetadata.Plo"; else rm -f ".deps/dmetadata.Tpo"; exit 1; fi
dmetadata.cpp: In member function 'int Digikam::DMetadata::getImageRating() const':
dmetadata.cpp:216: error: passing 'const Digikam::DMetadata' as 'this' argument of 'bool KExiv2Iface::KExiv2::getExifTagLong(const char*, long int&)' discards qualifiers
make[4]: *** [dmetadata.lo] Error 1
make[4]: Leaving directory `/home/simon/src/digikam-0.9.2-beta3/digikam/libs/dmetadata'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/simon/src/digikam-0.9.2-beta3/digikam/libs'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/simon/src/digikam-0.9.2-beta3/digikam'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/simon/src/digikam-0.9.2-beta3'
make: *** [all] Error 2
Comment 4 caulier.gilles 2007-06-13 12:43:08 UTC
Update libkexiv2, and all will be fine

Gilles
Comment 5 caulier.gilles 2007-06-13 13:36:50 UTC
Look here :

http://www.digikam.org/?q=download/svn

... and especially the section "Install digiKam in your Home Directory"...

Gilles
Comment 6 Simon Oosthoek 2007-06-13 21:33:24 UTC
Gilles Caulier wrote:
[bugs.kde.org quoted mail]

Sorry, I still cannot compile the software on feisty. The scripts don't 
work for me (even after I replaced the /home/fabien with $HOME) and the 
other instructions fail as well (stuck at compiling the libs, libkdcraw 
is missing a .moc (dcrawbinary.cpp:36:27: error: dcrawbinary.moc: No 
such file or directory)

I'll see again when a binary is available for feisty (I'm tracking the 
repository for feisty editions of digikam). This is not a blocker bug 
for me. So far, digikam is not more than a semi-convenient way of 
downloading images from my CF card. The rest of my workflow is 
commandline dcraw/convert/exiftool, gqview and gimp/ufraw. The only 
convenient part is that digikam downloading is offered at loading the CF 
card and that I can select which images to download and where to save them.

(See also my RAW workflow wishlist item 
http://bugs.kde.org/show_bug.cgi?id=142975 , I'll keep updating that 
with ideas if I get them)

Cheers

Simon
Comment 7 Simon Oosthoek 2007-06-22 12:29:16 UTC
I'm now using 0.9.2-final and the problem is still there.

raw files usually have an embedded jpg "thumbnail", I guess this is used in digikam to show an image for a raw file, it may be usuful to have the thumbnail show up right side up, which may be determined from the stored exif info or it might be set manually. 

The problem is really that the right-mousebutton menu shows the option to rotate, but when this is used, an error occurs, since a raw file can't be rotated. So the solution to this bug is either not show the rotate option (or grey it) for raw images, or change the option to say "rotate thumbnail" for raw files and then store a rotation offset with the image metadata.

Cheers

Simon
Comment 8 caulier.gilles 2008-12-05 19:15:35 UTC
Simon,

What's news about this file ? Are you tried digiKam 0.9.4 ?

Gilles Caulier
Comment 9 Simon Oosthoek 2008-12-06 21:55:43 UTC
this is still not possible in an early 0.9.5-svn version.

When I rotate the raw file (which isn't possible) I get an error, and there is no option to rotate the icon/thumbnail of the raw file only.

Basically, just being able to set the rotation option for a file (raw or otherwise) would probably fix it, since I assume you do check the orientation in the exif info, if it is there?

Unfortunately, I haven't seen any new info about rotation information in Sony's A100 .ARW format...

Cheers

Simon
Comment 10 caulier.gilles 2009-05-31 10:55:47 UTC
Marcel,

Look this entry. Do you remember my email some month ago about to only rotate thumb and not image as well ? 

Gilles Caulier
Comment 11 Marcel Wiesweg 2009-05-31 17:31:48 UTC
Can't find the mail right now, do you know the date?

Anyway, I think the problem is files for which we cannot edit the metadata, so we need to use the rotation flag stored in the database for it? So one thing is editing the rotation flag, second thing is reading it from the thumbnail creator. As usual it is a bit difficult as regards dependencies, but perhaps we keep that in mind if/when we redesign the thumbnail storage?
Comment 12 caulier.gilles 2009-05-31 18:51:31 UTC
Marcel, 

> Can't find the mail right now, do you know the date?

Mail from me, december 2008 : "virtual rotation of image..."

>Anyway, I think the problem is files for which we cannot edit the metadata, so
>we need to use the rotation flag stored in the database for it? 

yes.

>So one thing is editing the rotation flag, second thing is reading it from the >thumbnail creator. As usual it is a bit difficult as regards dependencies, but >perhaps we keep that in mind if/when we redesign the thumbnail storage?

and yes...

Gilles
Comment 13 caulier.gilles 2009-06-01 10:27:57 UTC
*** Bug 194800 has been marked as a duplicate of this bug. ***
Comment 14 caulier.gilles 2009-10-16 15:10:20 UTC
Johannes,

This feature is fully relevant of new thumbs database introduced with 1.0.0.

If i'm not too wrong :

- thumbs are stored as well in DB.
- A flag in DB can be used to give informations about orientation.
- when thumbs is extracted to be displayed, flag is used to process rotation.

Marcel, can you confirm ?

Gilles
Comment 15 Marcel Wiesweg 2009-10-16 18:55:06 UTC
There is a rotation field in the main database which is filled from Exif info. This field is currently ignored.
And there is a rotation field in the thumbnail database which is also filled from Exif info at time of thumbnail creation. This one is used to rotate the thumbnail after loading it from the thumbnail database.

Why two fields? Because the first existed when we needed the second... We could fill the second from the first instead of reading the file metadata directly. To adjust a thumbnail rotation "virtually", both should be updated.
Comment 16 Dominic Lyons 2010-08-16 00:43:18 UTC
As I found out in 1.3.0 (and possibly even in previous versions) there's a way to rotate the preview: In German GUI it is Bild > Exif-Ausrichtung justieren > [...], so in English GUI it should be found in Image > Justify Exif Orientation > [...] (or something similar).

So I guess the solution is as simple as changing the EXIX orientation (as the menu entry above does) instead of trying to rotate the image itself.

It would be very nice if this would happen transparent for the user, so if he calls the "normal" rotation via the overlay menu, the context menu or the Image menu the EXIF orientation rotation should be used instead of real rotation for RAW images. This should happen without showing a disturbing warning or something; maybe a short non-disturbing/interrupting information in the status bar is useful.
Comment 17 Dominic Lyons 2010-08-16 01:29:00 UTC
A temporal workaround is it to set short cuts - at least for more experienced users.

But:
a) Most users won't even know that they can rotate by changing Exif rotation
b) Setting shortcuts for this is somehow difficult (as the KDE dialog for setting short cuts is a bit confusing)

So it look forward to see this working in an easy way (for example as explained in comment #16).
Comment 18 caulier.gilles 2011-12-19 14:05:09 UTC
*** Bug 196383 has been marked as a duplicate of this bug. ***
Comment 19 caulier.gilles 2012-01-25 08:19:08 UTC
This entry have been implemented by Marcel on current implementation from git/master (next 2.6.0)

You can now rotate RAW thumb/preview. In fact a rotation flag is fixed in thumbnails database. Raw file still untouched of course.

Gilles Caulier