Initial commit: basic scripting, working under KDE Wayland

screenshot.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/bash
+
+DIR="/home/immortaly007/screenshot-log"
+FORMAT="png"
+SIMILARITY_DELETE_TRESHOLD=100
+HTML_THUMB_WIDTH=200
+SCALE="50%"
+
+DAY=`date +%Y-%m-%d`
+TIME=`date +%H.%M.%S.%3N`
+mkdir -p $DIR/$DAY
+SCR_NEW="$DIR/$DAY/$TIME.$FORMAT"
+SCR_LAST=`ls -t $DIR/$DAY/*.png | head -n1`
+
+# do a screenshot
+if [ "$DESKTOP_SESSION" = "plasmawayland" ]
+then
+  spectacle -bn -o $SCR_NEW
+else
+  import -window root $SCR_NEW
+fi
+
+#requires ImageMagick
+DISTANCE=`compare -metric MAE $SCR_LAST $SCR_NEW NULL: 2>&1`
+echo $DISTANCE
+# ImageMagick outputs something like "21.8357 (0.218357)"; we only want to use the first number for the comparison below, so we use cut to get just that
+DISTANCE=`echo $DISTANCE | cut -d " " -f1 -`
+
+
+if [ "$DISTANCE" = "inf" ]
+then
+  DISTANCE=1000
+fi
+
+echo $DISTANCE between $SCR_LAST and $SCR_NEW
+IS_SIMILAR=`echo "$DISTANCE < $SIMILARITY_DELETE_TRESHOLD" | bc`
+if [ "$IS_SIMILAR" = "1" ]
+then
+  rm $SCR_NEW
+  echo "`date`: Distance = $DISTANCE; too similar; RM $SCR_NEW"
+  # echo "`date` RM" >> $DIR/$DAY/log-.log
+else
+  mogrify -scale $SCALE $SCR_LAST
+  # Ensure that the new file is still seen as the most recent one
+  FUTURE=`date +%Y%m%d%H%M.%S -d "+1 second"`
+  touch -t $FUTURE  "$SCR_NEW"
+#   echo "<p>`date +%H:%M:%S` <a href=\"$SCR_NEW\"><img width=\"$HTML_THUMB_WIDTH\" src=\"$SCR_NEW\" /></a> <br />$WINDOW_TITLE </p>" >> $DIR/`date +%Y-%m-%d`-$PREFIX.html
+fi