[Bug 286263] New: Digikam automatically expands folders while dragging over them

[Thomas Damgaard]

https://bugs.kde.org/show_bug.cgi?id=286263

           Summary: Digikam automatically expands folders while dragging
                    over them
           Product: digikam
           Version: 2.3.0
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           2.3.0 (using KDE 4.7.2)
OS:                Linux

When a user drags a folder over another folder in Digikam, the folder is
automatically expanded. This confuses users and makes it very easy to
accidentially drop the folder in the wrong album.

A screencast illustrating the problem is available here:
http://ifile.dk/d/c4bd89b9-6f4b-49bf-be82-53ffc24ef7f8/

I see three problems here:
1: The automatic folder expansion can be useful in some use cases, however, it
is my experience that it confuses users more than it helps.
2: Appearently, there is no way to disable this behaviour from the Settings
window.
3: .. and this is probably the detail that makes this behavior most
annoying/dangerous: the folder expansion happens too quickly. I am guessing it
happens after hovering between 1 and 2 seconds. This is just too fast. Many
users require much longer time in order to position the mouse correctly. I
would say between 3-5 seconds would easily be needed.

Recommended solution:
1: Provide an option to enable/disable this feature.
2: Set the default bahavior to have this option disabled. (I think other KDE
applications such as Dolphin, etc. also have this feature disabled by default)
3: Make the delay before folder expansion configurable: let the user set the
delay from a range between 500ms to 10s. Set default value to 4s.

Reproducible: Always

Steps to Reproduce:
Drag a folder over another folder containing subfolders.


Actual Results:  
Folder expands very quickly

Expected Results:  
Should not expand -- or there should be a bigger delay.

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=286263





--- Comment #1 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-11-10 20:55:32 ---
The property is called "auto-expand delay" and currently set to 300 ms.
Suggestions on a better value (the value used by dolphin e.g.) are welcome; 4
sec are clearly too long, could just switch it off then.

I would not like to add application-specific options for details in handling of
basic UI components. If ever, then KDE-wide, but better, finding a clear
KDE-wide guideline for the time constant.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=286263


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]




--- Comment #2 from Gilles Caulier <caulier gilles gmail com>  2011-11-12 13:39:08 ---
Marcel,

I agree with Thomas. I use D&D all time in digiKam to manage collections and
items. when i drag icon-view items to album tree-view, target switch between
collapsed and reduced tree-view mode, depending if the position of mouse
cursor. It sound like a dysfunction... This behavior need to be improved and
polished.

Gilles Caulier

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[Marcel Wiesweg]

https://bugs.kde.org/show_bug.cgi?id=286263





--- Comment #3 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-11-12 16:55:37 ---
In Dolphin, press F7 to get the "folders" sidebar. Drag a file on this view.
You'll see there is the same auto-expand functionality, but apparently with a
longer delay. (and some nice smooth-scrolling animations...)

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[Thomas Damgaard]

https://bugs.kde.org/show_bug.cgi?id=286263





--- Comment #4 from Thomas Damgaard <thomasdn gmail com>  2011-11-13 15:57:05 ---
Marcel:
>The property is called "auto-expand delay" and currently set to 300 ms.
> Suggestions on a better value (the value used by dolphin e.g.) are welcome;
> 4 sec are clearly too long, could just switch it off then.

How to switch it off?

Why not add an option for the user to set the desired delay? I do not think 2-4
seconds is onreasonable for many users. Keep in mind that many users are not
software developers and do not spend nearly as much time in front of their
computers than we do. Thus, many users are not as trained in using the mouse to
quickly position the mouse where they want. (I am *not* kidding -- this is a
major usability concern)

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Usability




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[Thomas Damgaard]

https://bugs.kde.org/show_bug.cgi?id=286263





--- Comment #5 from Thomas Damgaard <thomasdn gmail com>  2011-12-13 12:40:43 ---
Marcel, as I read your text:
> Suggestions on a better value (the value used by dolphin e.g.) are welcome;
> 4 sec are clearly too long, could just switch it off then.

I get the impression that there already exists an option to disable this
feature. Is that correct? If so, where do I find this option?

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[Marcel Wiesweg]

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--- Comment #6 from Marcel Wiesweg <marcel wiesweg gmx de>  2011-12-24 17:03:51 ---
We could switch it off in code. As detailed in comment #1, I would not like a
digikam-specific option for this

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[Gilles Caulier-4]

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--- Comment #7 from Gilles Caulier <[hidden email]> ---
Marcel,

I'm hurting myself with this behavior on my lead computer. I use D&D everywhere
when i can.

On OSX, similar concept exist, but delay is not 300ms, but few seconds.

How we can customize this delay ?

Gilles

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Digikam automatically       |digiKam automatically
                   |expands folders while       |expands folders while
                   |dragging over them          |dragging over them

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[Gilles Caulier-4]

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--- Comment #8 from Gilles Caulier <[hidden email]> ---
MArcel,

I just seen that expanding folder feature is configurable in Dolphin (turn
on/off)

Turn off this feature have no sence in digiKam for me, but delay is not very
well adjusted to be usable well.

Gilles

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|digiKam automatically       |digiKam automatically
                   |expands folders while       |expands albums while
                   |dragging over them          |dragging over them

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]

--- Comment #9 from Gilles Caulier <[hidden email]> ---
*** Bug 307231 has been marked as a duplicate of this bug. ***

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|digiKam automatically       |digiKam automatically
                   |expands albums while        |expands albums tree-view
                   |dragging over them          |item while dragging over
                   |                            |them

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Latest Commit|                            |http://commits.kde.org/digi
                   |                            |kam/093fb17867b46d086826926
                   |                            |1154e2ca731f88221
         Resolution|---                         |FIXED
   Version Fixed In|                            |4.3.0
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #10 from Gilles Caulier <[hidden email]> ---
Git commit 093fb17867b46d0868269261154e2ca731f88221 by Gilles Caulier.
Committed on 03/09/2014 at 12:15.
Pushed by cgilles into branch 'master'.

Increase delay to expand album tree-view item with D&D operations from 300 to
800ms (as Dolphin)
code polish
Related: bug 307231
FIXED-IN: 4.3.0

M  +3    -1    NEWS
M  +34   -19   digikam/album/albumtreeview.cpp
M  +3    -2    digikam/album/albumtreeview.h
M  +9    -3    digikam/utils/globals.h
M  +1    -0    libs/widgets/mainview/dxmlguiwindow.cpp
M  +6    -5    libs/widgets/mainview/dxmlguiwindow.h

http://commits.kde.org/digikam/093fb17867b46d0868269261154e2ca731f88221

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Usability                   |Albums-Drag&Drop

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