https://bugs.kde.org/show_bug.cgi?id=427225

            Bug ID: 427225
           Summary: Showfoto GUI becomes unresponsive when used with the
                    keyboard
           Product: digikam
           Version: 7.1.0
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: showfoto
          Assignee: digikam-bugs-n...@kde.org
          Reporter: war...@gmx.de
  Target Milestone: ---

Dear Digikam devs

I have been editing a larger number of photos over the last few days and in the
last hour, I had to xkill the Showfoto-Window at least four times because the
GUI did not respond anymore. There is no CPU load, the GUI simply does not
react to input and the window client area does not redraw after resizing.

I do as much as possible with the keyboard to speed up my workflow. For that, I
set up shortcuts to open my most used tools and use (shift+)tab in the tool
settings and press Enter or Escape to execute and cancel the tool,
respectively.

So the usual flow for an image is: use several tools in quick succession:
rotate, resize, denoise, crop, local contrast and so on, each by pressing the
relevant shortcut, amending settings values if necessary and pressing enter or
the proper shortcut for the OK button. Finally I press Ctrl+S to save and Space
to open the next image.

I haven’t been able to narrow down the exact cause. It appears as though there
might be happening race conditions between the GUI events, because I press the
keys in a rather quick succession. Sometimes I observe a hickup, like when I
open the denoise tool and then press enter too quickly, the tool does not use
the values from its last execution (and which are already visible in the
settings area), but rather the default values.

I wanted to write a ticket about better keyboard handling in general, but the
issue I am reporting in this ticket is a different problem altogether.

Kind regards

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