[Bug 146760] New: Providing a Timeline-View for quickly narrowing donw the date of photos

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           Summary: Providing a Timeline-View for quickly narrowing donw the
                    date of photos
           Product: digikam
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: tom_t gmx at


Version:            (using KDE KDE 3.5.7)
Installed from:    Ubuntu Packages
OS:                Linux

I whould love to have a timeline on top of the screen (similiar as in Photoshop Elements), where I can quickly select regions of time I want to see photos from.

It would be great if there were a sort of histogram, which shows me how many photos are for example in one week/month. Then I could set a beginning and a end marker, and the photos are already filtered by this timespan. All other operation should only affect the already filtered photos (thus the timeline on top of the screen, as it whould always be visible).
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[Arnd Baecker]

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------- Additional Comments From arnd.baecker web de  2007-07-07 06:43 -------
Maybe one could re-use substantial parts of kphotoalbums
Datebar (DateBarWidget.cpp, MouseHandler.cpp, ViewHandler.cpp)?
See http://kphotoalbum.org/img/big/thumbnail-view.jpg for a screenshot.
To not occupy that space all the time, it should be possible to switch the
DateBar on and off.
(Still, it should act like the other filters such that it is
still active, even if it is not visible)
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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2007-07-07 08:03 -------
Arnd,

yes, these widgets can be backported from KPhotoAlbum and add to the layout of Album GUI - Date View. It must be done with KDE4 port because it touch indeep implementation.

We need to interface it with the new database interface from Marcel, and of improved the design of widgets to be better.

Marcel, please, give me your viewpoint about this subject

Gilles
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caulier.gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Albums GUI
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caulier.gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Albums GUI                  |Dates



------- Additional Comments From caulier.gilles gmail com  2007-12-04 07:51 -------
Arnd,

I will work on Date view for 0.9.4 release and especially about this file...

Gilles
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------- Additional Comments From caulier.gilles gmail com  2007-12-10 16:02 -------
chiefaua,

Please take a look into file http://bugs.kde.org/show_bug.cgi?id=96388

There is a new timeline widget under construction (not yet complete of course)...

Gilles Caulier
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------- Additional Comments From tom_t gmx at  2007-12-13 19:42 -------
Hello

Concerning the new timeline widget, I would have some ideas/whishes. I attach
a screenshot from Photoshop Elements, where I got the original idea from
(from my old windows-times...).

So, my whishes/ideas are:

- It would be cool if the timeline-widget could be visible all the time, maybe
on top or bottom of the screen (maybe even movable like a toolbar or
dock-widget which only docks on top or bottom)

- IMHO, the timeline widget should not only be displayed in the dates sidebar
view, as the user has there a feedback about time/dates anyway. It would be
much more usefull, if the timeline widget only displays a statistic about the
items currently displayed in the main window.

- The timeline widged should provide some visual feedback about the currently
selected item/items. So if a item from 12th march 2007 is selected, march
2007 should be highlighted in some form.

- If you click on some point of the timeline widget, the main view should
automatically jump to the first photo of this date.

- The timeline widged should act as a filter (maybe like the new filter in the
status line...). You could have handles at the right and left side of the
widget, and drag them towards the centre to define lower and upper bound of
the desired date range to display. Maybe we could "gray out" the not-visible
date range in this case, to inform the user, that there are other items,
which are just filtered away in the moment.

Let me just explain some use-cases which would be possible which such a
timeline widget:
suppose, you have assigned tags for all photos of your children. Now you could
search for these items in the tag-view sidebar or by clicking on the
corresponding checkboxes.
The timeline widget could give you now direct feedback about when you have
made photos of your children, and how many.
As you browse through your photos, you always see visually how old these
photos are.
You can filter the displayed photos very quickly by just dragging the upper
and lower bounds of the timeline view to the values you are interested in.

I know, all this would be possible too by defining customs searches, but this
does not give you the immediate visual feedback, and very often I am just
browsing my photos, and not interested in defining a lot of searches just for
one-time use.
I am also aware of the fact, that there exists already a filter for tags, and
that I could filter within the virtual date albums using tag filters. But
this approach does also not provide visual feedback (altough this would
change with the new feature of displaying the item count and the timeline
widget in the date-view sidebar, but I am not sure if the displayed count
would refer to the visible count or the count in the database)

The task described above can also not be done easily with virtual albums, as I
can only select one of these (either date or tags).

So, finally I think that the timeline-widget I am thinking of would be quite
usefull for browsing or rediscovering photos, not really for searching photos
of which I already know when I took them.


Additionally, I would have another idea/whish for the timeline-widget:

- The timeline widget should choose automatically the right granuality of the
scale (decade, year, quarter, month, week, day), depending on the "youngest"
and "oldest" item in the current view, and the space it has on the screen.
Optionally the user could change this, which would imply that we would need
some sort of scrolling mechanism to reach the (then) invisible portions of
the date-range.


I hope I could point out my vision quite clearly. I know, that some/many of
these ideas/whishes are quite hard to implement or would cause performance
issues, but I just wanted to precise my ideas.
I will certainly not stop digiKam if my whishes can not be realized, but I
still think that it would be a cool feature.


Best regards

Thomas
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------- Additional Comments From tom_t gmx at  2007-12-13 19:43 -------
Created an attachment (id=22533)
 --> (http://bugs.kde.org/attachment.cgi?id=22533&action=view)
Screenshot from Adobe Elements, Timeline
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[brianr]

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------- Additional Comments From bcr wt net  2008-01-01 02:40 -------
I think all the above ideas are great but the use of a single timeline 'widget' per se leaves behind a great space saving opportunity - incorporating the timeline into the folder tree renderer itself. In the sample screen at the moment (http://www.digikam.org/?q=node/285) there is a large amount of wasted whitespace to the right of the month labels in the tree.

I would suggest using this space to render smaller versions of the timeline widget for each folder. This would allow users to view their -whole- photo collection as a quasi-density chart by date. You could still provide the current timeline widget under construction to show more detail but it would be great to have all of them showing in simplified form to the right of the leaves on the folder tree:

2007   .....|..|...|.....  
  January  ....|..||.....
  February ........|..||.
  March    .||.|.|...|...
  April    ........||....
  etc..

Regards,
Brian
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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2008-01-08 16:58 -------
Created an attachment (id=22900)
 --> (http://bugs.kde.org/attachment.cgi?id=22900&action=view)
patch to enable new timeline sidebar tab

Hi all,

Working on time is under progress currently. There is a little patch to enable
timeline view as a new right sidebar tab.

Timeline now work with Search KIO slave an run on the whole collection of
albums.

Multiple selection (contiguous or not !) is implemented.

Still a lots of code polish (especially with selection mode) to do.

Gilles
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------- Additional Comments From caulier.gilles gmail com  2008-01-08 17:03 -------
Created an attachment (id=22901)
 --> (http://bugs.kde.org/attachment.cgi?id=22901&action=view)
Screenshot of TimeLine right sidebar bar in action
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------- Additional Comments From mikmach wp pl  2008-01-10 00:39 -------
Looks nice. Selection of images isn't clear but I never understood
appeal of that widget so maybe its my problem.

Real issue:

With current situation panel is occupied only in half, Rest is boring,
even ugly, grey. What do you think about changing of orientation of
widget from horizontal into vertical? It should solve some problems:

Pro:

+ in default sidebar width it can present only handful of units, with
  vertical orientation it can show several times more
+ in several languages one letter isn't enough to clearly distinguish
  month/day of week/whatever; in vertical layout you can use longer
  labels making everything clear
+ ugly background if filled making much nicer interface

Con:

- don't know if it is possible widgetwise
- anything else?
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caulier.gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #22900|0                           |1
        is obsolete|                            |
  Attachment #22901|0                           |1
        is obsolete|                            |



------- Additional Comments From caulier.gilles gmail com  2008-01-15 15:31 -------
Created an attachment (id=23056)
 --> (http://bugs.kde.org/attachment.cgi?id=23056&action=view)
Patch update to enable time-line tool in digiKam for KDE3

This is the last version of the patch to be able to use time-line tool in
digiKam, accordingly with last changes in svn.
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------- Additional Comments From caulier.gilles gmail com  2008-01-15 16:36 -------
Created an attachment (id=23060)
 --> (http://bugs.kde.org/attachment.cgi?id=23060&action=view)
Screenshot of timeline in action
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------- Additional Comments From mikmach wp pl  2008-01-16 00:03 -------
Looks great. Thanks to screenshot I understand now how to use it :)

Wonderful developments.

Several remarks:

- "Total" - IMO this is not the best word here . More precise could be:
  "Selected images", or even just "Selected". (Or am I missing
  something?)

- "crunching" of date in cursor info. It is very early shortened into
  something like: 5.11.200...6.11.2007, even when minimal width of left
  sidebar is more than enough to fit it all.

- wording again: tooltip for saving button: Save current selection to
  a new Album. In all other places in digiKam "Album" is physical place
  on disk; here we are saving selection to something virtual. May
  I suggest: "Save current selection to new virtual Album"?

- margins on timeline: they are too big, over 5 years in Year view;
  almost 2 years in month view; in week view over year below earliest
  image and almost two months after last image; 2,5 years and 1 year in
  *day* view.

But these things are only icing on a cake, thanks :)
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------- Additional Comments From caulier.gilles gmail com  2008-01-16 06:10 -------
- "Total" - IMO this is not the best word here . More precise could be:
  "Selected images", or even just "Selected". (Or am I missing
  something?)

==> this one will be removed. it's just for debug. In fact, total  count is already availalbe on bottom to status bar.

- "crunching" of date in cursor info. It is very early shortened into
  something like: 5.11.200...6.11.2007, even when minimal width of left
  sidebar is more than enough to fit it all.

==> this is for optimize space. i'm open for alternatve way to do it.

- wording again: tooltip for saving button: Save current selection to
  a new Album. In all other places in digiKam "Album" is physical place
  on disk; here we are saving selection to something virtual. May
  I suggest: "Save current selection to new virtual Album"?

==> right.

- margins on timeline: they are too big, over 5 years in Year view;
  almost 2 years in month view; in week view over year below earliest
  image and almost two months after last image; 2,5 years and 1 year in
  *day* view.

What do you mean by margin exactly. I don't understand (:=))

Gilles
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[Gerhard Kulzer-3]

Am Wednesday 16 January 2008 schrieb Gilles Caulier:

> ------- You are receiving this mail because: -------
> You are the assignee for the bug, or are watching the assignee.
>
> http://bugs.kde.org/show_bug.cgi?id=146760
>
>
>
>
> ------- Additional Comments From caulier.gilles gmail com  2008-01-16 06:10
> ------- - "Total" - IMO this is not the best word here . More precise could
> be: "Selected images", or even just "Selected". (Or am I missing
>   something?)
>
> ==> this one will be removed. it's just for debug. In fact, total  count is
> already availalbe on bottom to status bar.
>
> - "crunching" of date in cursor info. It is very early shortened into
>   something like: 5.11.200...6.11.2007, even when minimal width of left
>   sidebar is more than enough to fit it all.
>
> ==> this is for optimize space. i'm open for alternatve way to do it.
>
> - wording again: tooltip for saving button: Save current selection to
>   a new Album. In all other places in digiKam "Album" is physical place
>   on disk; here we are saving selection to something virtual. May
>   I suggest: "Save current selection to new virtual Album"?
>
> ==> right.
>
> - margins on timeline: they are too big, over 5 years in Year view;
>   almost 2 years in month view; in week view over year below earliest
>   image and almost two months after last image; 2,5 years and 1 year in
>   *day* view.
>
> What do you mean by margin exactly. I don't understand (:=))
>
> Gilles
> _______________________________________________

Hi Gilles,

very nice work again :-)

I agree with Mik's i18n comments (by the way it reminds me of our discussion
of using Album for virtual ones only, are you interested in that change?)

My comment: The selection spot is not intuitively to find, without your
screenshot I didn't know how to use it. What about putting some check box
below the bars?

Gerhard

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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2008-01-16 09:40 -------
Comments from Gerhard posted by mail, not in B.K.O:

//-------------------------------------------------------------------

Hi Gilles,
very nice work again :-)

1/ I agree with Mik's i18n comments (by the way it reminds me of our discussion
of using Album for virtual ones only, are you interested in that change?)

2/ My comment: The selection spot is not intuitively to find, without your
screenshot I didn't know how to use it. What about putting some check box
below the bars?

Gerhard

//-----------------------------------------------------------------------

1/ ==> What do you mean exactly ?

Currently we have "Album" for physical directory on HDD, and "Virtual Album" for virtual directory from digiKam database. This is not enough ?

2/ ==> the selection behaviour is the same than KPhotoAlbum, excepted than discontigous selection can be done in digiKam, not in KPhotoAlbum. Just use CTRL key with mouse button to perform multiple selections.

If this behaviour is not intuitive for you, well, KPhotoAlbum is not intuitive for you too (:=)))...

More seriously, I'm open to improve selection stuff of course. Using Checkbox below histogram is not possible in KDE3/QT3, because i have used a standard QWidget class to design TimeLineWidget. It's the most portable way to use the same code KDE3 and KDE4. Also the code is suitable as well with KDE3. If i use new Qt4 API for that, code will be not suitable in KDE3.

QT4 provide a way to mix widget where you want in a main canvas widget. Qt3 cannot do it easily.

Look like the PhotoShop Element do not provide a way to make selection outside the histogram area.

F-Spot... cannot provide Date range selection ! (Very nice program (:=))))

I don't know how others photo-management programs work about timeline selection. New screenshots are welcome...

Gilles
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------- Additional Comments From mikmach wp pl  2008-01-16 10:13 -------
> - margins on timeline
> What do you mean by margin exactly. I don't understand (:=))


Don't have access to digiKam now but I will try to explain on
hypothetical data:

I have photos from 10/1/2001 to 1/1/2008. When I show timeline in Year
view timeline width is from: 1995 to 2012. Margin are those additional
years, from 1995 to 1999 and 2009 to 2012: 3-4 ticks.

When I show timeline in month view it those additional, empty, useless
space is wide for 2 years: 24 ticks.

With week mode margins are: 52 ticks before and 8 ticks after images.

Day mode: 700 ticks before and 360 ticks after any images.

Those margins are too big and make usage awkward. When user scrolls to
beginning/end (s)he expects to see first/last images. Small margin of
1-2 ticks would be nice visually but is not necessary.

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------- Additional Comments From mikmach wp pl  2008-01-16 10:33 -------
One more question about wording:

In Timeline panel we have "My Date searches"

But there is separate panel Dates. Even when wording is technically
correct it may create some confusion leading to check for Date searches
in Dates panel, not Timeline.

What do you think about "My Timeline searches"?

However it may be difficult for translation in some languages...

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