Bug 181893

Summary: blur: dragging the preview image removes the target frame and leaves only the source frame
Product: [Applications] digikam Reporter: Nadav Kavalerchik <nadavkav>
Component: Usability-Drag&DropAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal CC: caulier.gilles
Priority: NOR    
Version: 0.10.0   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In: 0.10.0

Description Nadav Kavalerchik 2009-01-25 18:24:56 UTC 
Version:           0.10.0-beta8 (using 4.1.96 (KDE 4.1.96 (KDE 4.2 RC1)), Debian packages)
Compiler:          cc
OS:                Linux (x86_64) release 2.6.26-1-amd64

starting a blur effect, i get the screen divided into target and original frames
moving the upper-right preview image removes the target frame.

i think they both used to change (slide) together and reflect the place of the moving selection in the main image. 

pressing "try" button places the frame back with the result.

looks like a bug but might be intentional ?
Comment 1 caulier.gilles 2009-01-25 18:27:49 UTC 
It's intentional. 

I let's Andi give more info here... I have set this behaviours in code.

Gilles Caulier
Comment 2 Andi Clemens 2009-01-25 20:28:30 UTC 
We set it this way because blur can be very time consuming (30 seconds and more, depending on the image size and the zoom level).
Many users were annoyed that moving the slider or the preview image immediately resulted in the preview calculation.
So we removed the automatic calculation so that the user can select the preview window and the filter settings and hit "try" to finally see the results.
Since the preview is only calculated for the preview window, moving the frame "deletes" the target view, since this data is simply not present.

Andi
Comment 3 Nadav Kavalerchik 2009-01-25 20:30:15 UTC 
you are so right !
thanks :-)
Comment 4 Andi Clemens 2009-01-25 20:35:33 UTC 
If the zoom level is quite big, it is fast (like in Gimp, the preview seems to be zoomed to 100%). Maybe we will add something similar like in Gimp, where you have this "Preview" checkbox. We will see. For 0.11 we are planning to re-implement the editor preview widget.

Andi
Comment 5 Nadav Kavalerchik 2009-01-25 20:41:37 UTC 
great idea.

thow, you do not want to make too small ;-)
Comment 6 Andi Clemens 2009-01-25 20:45:22 UTC 
The plan is not to copy Gimp's plugin dialog, I only meant the checkbox feature :-)
We'll see what will happen, don't know if the others have plans in mind already.

Andi