[Kde-imaging] [kipiplugins] [Bug 345198] New: Batch rename is *extremely* slow

[Chris Vanden Berghe]

https://bugs.kde.org/show_bug.cgi?id=345198

            Bug ID: 345198
           Summary: Batch rename is *extremely* slow
           Product: kipiplugins
           Version: 4.2.0
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: BatchProcessImages
          Assignee: kde-imaging at kde.org
          Reporter: Chris at VandenBerghe.org

Hi,

I'm trying to rename 766 photos (about 13 GB) on a modern PC with SSD and
plenty of RAM.

I use the following options:

prefix string: (empty)
sequence number start value: 1
add original file name: unchecked
add file date: checked
add extra symbols in date format field: unchecked
date format: %Y_%m_%d_sometext

Editing this date format string is unbelievable slow... I'm talking about
1-character-per-5-minutes slow (literally). CPU usage is through the roof. The
'rename images' window is in focus, but the mouse pointer does not show while
it's, well, busy interpreting the date format string as I'm typing it.

The plugin was called from gwenview 4.14.2.

Reproducible: Always

Steps to Reproduce:
1. select images in gwenview
2. batch operations -> rename
3. type in the date format string field
4. make a cup of coffee, watch a movie, ...
5. back to 3 if you made a typo or press start otherwise

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