Bug 141940 - Image selection bugs (multiple and single selections)
Summary: Image selection bugs (multiple and single selections)
Status: RESOLVED FIXED
Alias: None
Product: digikam
Classification: Applications
Component: Albums-MainView (show other bugs)
Version: 0.9.2
Platform: Ubuntu Linux
: VHI normal
Target Milestone: ---
Assignee: Digikam Developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-02-19 20:44 UTC by Thomas McGuire
Modified: 2016-07-14 17:00 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In: 5.1.0
Sentry Crash Report:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Thomas McGuire 2007-02-19 20:44:00 UTC
Version:           SVN (using KDE KDE 3.5.6)
Installed from:    Ubuntu Packages
OS:                Linux

There are two problems with selections of pictures in the thumbnail view:

1.
Digikam sometimes operates on pictures which are not selected.
Assume the following situation:
The thumbnail view shows 2 pictures. Initially, the first one is selected. Now, click on some empty whitespace and drag the selection over picture 2. Now only picture 2 is selected, like it should be. Now, click on the "Edit" icon in the toolbar. Picture 1 will be opened in the editor, while the selected one, picture 2, should be opened instead.
Using "Image->Rotate" operates on the correct picture, however the selection jumps to picture 1 afterwards.
Selecting a picture by right-clicking it and then pressing escape works.

2.
The selection is reset after opening/closing the right sidebar, but only when selection a picture with the "click empty space and drag" method described above.
Multiple selection does not work with either method.
Comment 1 Gerhard Kulzer 2007-02-19 20:59:46 UTC
Am Monday 19 February 2007 schrieb Thomas McGuire:
[bugs.kde.org quoted mail]

Bug confirmed
Gerhard
Comment 2 caulier.gilles 2007-02-20 07:38:52 UTC
And it's important. It must be fixed before 0.9.1-final release

Gilles
Comment 3 Marcel Wiesweg 2007-02-25 15:01:43 UTC
SVN commit 637131 by mwiesweg:

- Do not reset selection in slotUpdate.
  This means that the selection is preserved
	- during any resize operations (hiding sidebar)
	- while filtering out items with the tag filter 
	- when items have been changed from outside (AlbumIconView::refreshItems)
- change the misleading name d->firstVisibleItem to d->storedVisibleItem
  (it does not always point to the current first visible item - it is usually 0)

CCBUG:141940


 M  +21 -22    iconview.cpp  


--- trunk/extragear/graphics/digikam/digikam/iconview.cpp #637130:637131
@@ -65,7 +65,7 @@
         lastGroup           = 0;
         currItem            = 0;
         anchorItem          = 0;
-        firstVisibleItem    = 0;
+        storedVisibleItem   = 0;
         clearing            = false;
         spacing             = 10;
 
@@ -103,7 +103,7 @@
     IconItem*          toolTipItem;
     IconItem*          currItem;
     IconItem*          anchorItem;
-    IconItem*          firstVisibleItem; // store position for slotUpdate
+    IconItem*          storedVisibleItem; // store position for slotUpdate
     
     IconGroupItem*     firstGroup;
     IconGroupItem*     lastGroup;
@@ -403,7 +403,7 @@
         d->lastGroup         = group;
     }
 
-    d->firstVisibleItem = findFirstVisibleItem();
+    d->storedVisibleItem = findFirstVisibleItem();
     startUpdateTimer();
 }
 
@@ -415,7 +415,7 @@
     // this is only to find an alternative visible item if all visible items
     // are removed
     IconGroupItem *alternativeVisibleGroup = 0;
-    d->firstVisibleItem = 0;
+    d->storedVisibleItem = 0;
 
     if (group == d->firstGroup)
     {
@@ -454,11 +454,11 @@
 
     if (!d->clearing)
     {
-        d->firstVisibleItem = findFirstVisibleItem();
-        if (!d->firstVisibleItem && alternativeVisibleGroup)
+        d->storedVisibleItem = findFirstVisibleItem();
+        if (!d->storedVisibleItem && alternativeVisibleGroup)
         {
             // find an alternative visible item
-            d->firstVisibleItem = alternativeVisibleGroup->lastItem();
+            d->storedVisibleItem = alternativeVisibleGroup->lastItem();
         }
         startUpdateTimer();
     }
@@ -469,7 +469,7 @@
     if (!item)
         return;
 
-    d->firstVisibleItem = findFirstVisibleItem();
+    d->storedVisibleItem = findFirstVisibleItem();
     startUpdateTimer();
 }
 
@@ -509,16 +509,16 @@
     
     if (!d->clearing)
     {
-        d->firstVisibleItem = findFirstVisibleItem();
-        if (d->firstVisibleItem == item)
-            d->firstVisibleItem = d->currItem;
+        d->storedVisibleItem = findFirstVisibleItem();
+        if (d->storedVisibleItem == item)
+            d->storedVisibleItem = d->currItem;
         startUpdateTimer();
     }
 }
 
 void IconView::triggerUpdate()
 {
-    d->firstVisibleItem = findFirstVisibleItem();
+    d->storedVisibleItem = findFirstVisibleItem();
     startUpdateTimer();
 }
 
@@ -603,22 +603,21 @@
     }
     d->anchorItem = d->currItem;
 
-    if (d->currItem)
+    // ensure there is a selection
+    if (d->selectedItems.isEmpty())
     {
-        d->currItem->setSelected(true, true);
+        if (d->currItem)
+            d->currItem->setSelected(true, true);
+        else // no selection
+            emit signalSelectionChanged();
     }
-    else
-    {
-        // no selection
-        emit signalSelectionChanged();
-    }
 
     // set first visible item if they where stored before update was triggered
-    if (d->firstVisibleItem)
+    if (d->storedVisibleItem)
     {
-        ensureItemVisible(d->firstVisibleItem);
+        ensureItemVisible(d->storedVisibleItem);
         // reset to 0
-        d->firstVisibleItem = 0;
+        d->storedVisibleItem = 0;
     }
     else
     {
Comment 4 Marcel Wiesweg 2007-02-25 15:06:05 UTC
Point 2. is fixed by the commit.

Point 1 is not a bug IMO:
 - it is consistent with Konqueror's iconview behavior
 - the current item, which is opened in the image editor, is marked with a dashed black line
Comment 5 Thomas McGuire 2007-02-25 15:58:44 UTC
Thanks for fixing this.

>- while filtering out items with the tag filter 
Introduces a new bug:
Let's say you have two pictues, picture A and B. Picture A has a tag named "Test", picture B has no such tag. Now you select both pictures, then set the tag filter to show only pictures with the "Test" tag. Now, as expected, only picture A is shown. However, the statusbar still shows "2 items selected". 

I think pictures which are filtered away should be deselected. It can only cause problems having pictures which are selected but invisible.
However the other selections should still be preserved.

>Point 1 is not a bug IMO: 
>  - it is consistent with Konqueror's iconview behavior 
>  - the current item, which is opened in the image editor, is marked with a >dashed black line 
Ah, I've never noticed that dashed black line before. 
But think of the following situation: You have two pictures, A and B. A is selected (blue background), B is the current item (dashed black line).
Why does Image->Rotate work on the selected picture (A), while Image->Edit works on the current item (B) ? 

Maybe a solution to this would be that when selecting an image, it should become the current item. This way, it would not be possible that the current item is not selected (except when nothing is selected), eliminating such confusions like above.


Comment 6 Marcel Wiesweg 2007-02-26 18:01:50 UTC
SVN commit 637505 by mwiesweg:

Emit signalSelectionChanged if a selected item has been removed

CCBUG: 141940


 M  +9 -5      iconview.cpp  


--- trunk/extragear/graphics/digikam/digikam/iconview.cpp #637504:637505
@@ -490,6 +490,8 @@
 
     // Remove from selected item list
     d->selectedItems.remove(item);
+    if (item->isSelected())
+        d->needEmitSelectionChanged = true;
 
     if (d->toolTipItem == item)
     {
@@ -606,13 +608,15 @@
     d->anchorItem = d->currItem;
 
     // ensure there is a selection
-    if (d->selectedItems.isEmpty())
+    if (d->selectedItems.isEmpty() && d->currItem)
     {
-        if (d->currItem)
-            d->currItem->setSelected(true, true);
-        else // no selection
-            emit signalSelectionChanged();
+        d->currItem->setSelected(true, true);
     }
+    else if (d->needEmitSelectionChanged)
+    {
+        emit signalSelectionChanged();
+    }
+    d->needEmitSelectionChanged = false;
 
     // set first visible item if they where stored before update was triggered
     if (d->storedVisibleItem)
Comment 7 Marcel Wiesweg 2007-02-26 21:33:29 UTC
> Why does Image->Rotate work on the selected picture (A), while Image->Edit 
> works on the current item (B) ? 
 
Because Image->Rotate works on multiple images, and 0...n pictures can be selected. Image->Edit can only open one image as the current image, and one and only one image is the current image.

What you experience is only the corner case of rubber-band selecting only one image. I don't really mind to set the one selected image as the current image in this case, but on the other hand, it is not consistent behavior.
Comment 8 Thomas McGuire 2007-02-27 16:28:16 UTC
> > Why does Image->Rotate work on the selected picture (A), while
> > Image->Edit works on the current item (B) ?
>
> Because Image->Rotate works on multiple images, and 0...n pictures can be
> selected. Image->Edit can only open one image as the current image, and one
> and only one image is the current image.
>
> What you experience is only the corner case of rubber-band selecting only
> one image. I don't really mind to set the one selected image as the current
> image in this case, but on the other hand, it is not consistent behavior.

Well, the real inconsistence is that Edit and Rotate work on different 
pictures in the same situation. I understand the reasons for that (now), but 
the average user does not know that there is a difference between the current 
image and the selected image(s), and that some functions operate on the 
selected images, while others work with the current image. Until you 
explained this here, I found this totally irritating, especially because my 
method for editing a picture was selecting it and then pressing the edit 
toolbar button (which didn't work).

What do you think is not consistent behavior in my proposal?
Anyway, please implement this, it will save a lot of confusion for most users.
Comment 9 Arnd Baecker 2007-09-05 22:39:53 UTC
Hi Thomas,

I tried to find out the remaining open problem here, but
the present behaviour seems ok and intuitive to me.
Could you maybe summarize the open issue (with respect to current svn)
and your proposed solution?

Many thanks,

Arnd

P.S.: the only issue I see is that when F4 (edit) is pressed,
the current selection is lost.
Comment 10 Thomas McGuire 2007-09-06 14:24:21 UTC
>Could you maybe summarize the open issue (with respect to current svn) and your proposed solution? 
Ok, the open issue is the following: If I use the "click whitespace and then drag the selection" method to select one image, that image is NOT the current one, which is confusing for me (see description above).

Basically I want the following: If the user selects only one image with the drag method, please make that image also the current one (with a dashed rectangle around it).

I can not the test the current KDE4 SVN version, as it always crashes for me on startup (I'll write a bug report about that later).
I'm still using the 0.9.1 version.
 
Comment 11 caulier.gilles 2007-09-06 14:31:50 UTC
Thomas,

Do not file a report about digiKam for KDE4. it still in alpha stage. Please wait until 0.10.0-beta1 is out. Thanks in advance

Gilles Caulier
Comment 12 caulier.gilles 2007-11-28 13:22:25 UTC
Thomas,

What's news about this report ? Are you tested 0.9.2 or 0.9.3-beta3 ? Problem still exist ?

Gilles Caulier
Comment 13 Thomas McGuire 2007-11-30 15:34:45 UTC
>What's news about this report ? Are you tested 0.9.2 or 0.9.3-beta3 ? Problem still exist ? 
Sorry, but for some reason my SVN build fails at the moment, so I am still using 0.9.1

But unless someone changed it, problem problem 1) is still there:

Suggestions:
a) When using the mouse to select exactly one image, make that image also the current image (with the dotted rectangle). See the above discussion why.

b) When selecting multiple (>1) images, disable the actions which operate only on one image, as the user excepts it to work on all selected images. An example is the "Edit" action.
Comment 14 Simon Oosthoek 2008-01-12 22:19:12 UTC
Not sure if I'm experiencing this problem as well, but I'll describe it anyway.

When I rotate one or a selection of images (walking through an album using cursor keys, selecting multiple using shift press with cursor keys), the ability to use the cursor keys sometimes disappears after the rotation is finished. Usually a simple mouseclick on the right thumbnail fixes the problem, which causes me to believe it is a focus setting problem, but one that isn't consistent.

If necessary, I can file a separate bugreport...

/Simon
Comment 15 caulier.gilles 2008-12-04 20:58:58 UTC
What's news about this report ? it still valid using digiKam 0.9.4 or 0.10.0 ?

Gilles Caulier
Comment 16 caulier.gilles 2008-12-05 11:16:16 UTC
Andi,

A lots of patches have been apply with this entry. Is the original problem is fixed now ?

Gilles
Comment 17 Andi Clemens 2008-12-05 11:56:48 UTC
I can confirm bug 1 for 0.9.5, although it doesn't seem to be a real bug. But I also think the rubberband behavior feels wrong, if I highlight an image I want this to be active, not the one I previously clicked on.

Andi
Comment 18 Mikolaj Machowski 2008-12-05 22:23:44 UTC
1 exists for 0.9.5svn and it *is* real bug. Not operating on image not pointed by user is grave bug.

It also exists for selecting images by clicking: click on image A and B holding Ctrl pressed to select both and click once more on B to deselect it. Edit will open B in IE.
Comment 19 Thomas McGuire 2008-12-06 14:30:31 UTC
> What's news about this report ? it still valid using digiKam 0.9.4 or 0.10.0 ?

It is still valid in 0.10.0 beta 7. At least point 1 of this report.
Comment 20 Andi Clemens 2009-10-08 00:42:44 UTC
Any news with digiKam 1.0.0-betaX here?
We switched to Qt4 model view, so it might be solved...
Comment 21 Johannes Wienke 2010-01-08 12:19:39 UTC
Should we close this as WAITINGFORINFO as there is no feedback since one year?
Comment 22 caulier.gilles 2011-12-14 09:16:26 UTC
Thomas,

We need some fresh feedback with digiKam 2.x serie...

Gilles Caulier
Comment 23 caulier.gilles 2015-07-02 05:06:17 UTC
New digiKam 4.11.0 is available.

https://www.digikam.org/node/740

Can you reproduce the problem with this release ?

Gilles Caulier
Comment 24 caulier.gilles 2016-07-14 17:00:55 UTC
With digiKam 5.0.0  this problem is not reproducible.
I close this file now. Don't hesitate to re-open if necessary.
Gilles Caulier