Accept dynamic changes to slideshow list

[caclark]

ISSUE TYPE

• Feature Request

GEEQIE VERSION

All versions

SUMMARY

If the slideshow is set to Repeat and is displaying images from a folder or collection, adding an image to the folder causes the slideshow to stop. It should be possible to add or remove images from a folder, and for the slideshow to continue.

[gkuenning]

Dunno if this will be useful to anybody, but I wrote the following script, gqview-picset, for use with gqview. It might be adaptable to geeqie. As it says, it's tailored to my usage patterns. I apologize for pasting it here; github is being finicky.

#!/bin/bash
#
# Helper script to display a set of photos in gqview, choosing the
# last but then starting a slideshow after a delay.
#
# This is very carefully tailored to my usage patterns.
#
# Each invocation adds to a list of pictures to display.
#
USAGE="Usage:  gqview-picset -c -D # -d # -k -z pic-files
    -c          Clear the current list of files before adding new ones.
    -D #        Give the slide show inter-slide delay time (default 5
                seconds, precision 0.1 seconds).  Note that if gqview
                is exited normally, this value will become the new
                default for future invocations not made through this
                script.
    -d #        Give the delay until starting the slide show (default
                60 seconds).
    -k          Kill xscreensaver.
    -z          Remove the given picture(s) from the display list."

FILES=/tmp/gqps.files

delay=60
slideshowDelay=5
zapDisplay=false

while (( $# > 0 ))
do
    case "$1" in
        -c)
            rm -f $FILES
            ;;
        -D)
            slideshowDelay="$2"
            shift
            ;;
        -d)
            delay="$2"
            shift
            ;;
        -k)
            pkill xscreensaver
            pkill glslideshow
            ;;
        -z)
            zapDisplay=true
            ;;
        --)
            shift
            break
            ;;
        -*)
            echo "$USAGE" 1>&2
            exit 2
            ;;
        *)
            break
            ;;
    esac
    shift
done

#
# If the list of files is more than a day old, blow it away.
#
fileAge=$(find $FILES -mtime +0 2>/dev/null)
[ -n "$fileAge" ]  &&  rm $FILES
for file
do
    if $zapDisplay
    then
        grep -v "$file" $FILES | sort -u -o $FILES
    else
        echo "$file" >> $FILES
    fi
done
sort -u -o $FILES $FILES
[ -s $FILES ]  ||  exit 0

#
# Remember when we created the updated file list.  We depend here on the
# precision of modern Unix timestamps.
#
listTime=$(date +%s.%N)

#
# Put the new file list into gqview, and go to the last one.
#
# Note: we redirect all gqview output because it's a chatty program.
# The redirection needs to be removed in three places if debugging is
# necessary.
#
gqview --remote -fs $(cat $FILES) &>/dev/null

#
# If there is more than one file, choose the last and spawn a
# background job to start a slide show.
#
if (( $(wc -l < $FILES) > 1 ))
then
    gqview --remote --slideshow-stop --last &>/dev/null
    #
    # Spawn a background job that will start a slide show if we've
    # been idle for $delay seconds.  But only do that if there are
    # multiple pictures.
    #
    (
    sleep $delay
    found=$(find $FILES -newermt @$listTime)
    #
    # gqview is a bit quirky about setting the slide show delay.  You
    # have to stop and restart the show before the delay will take
    # effect.  (Also, there's a bug of some sort that requires you
    # cuddle the value with the -d option, but I'm going to use the
    # long --delay version so I don't care.)
    #
    if [ -z "$found" ]
    then
        gqview --remote --slideshow-stop --delay=$slideshowDelay \
          --slideshow-start \
          &>/dev/null
    fi
    ) &
fi