feh basics

In Ubuntu I find the following description in man feh

 --zoom percent | max | fill

         Zoom images by percent when in full screen mode or when window

         geometry is fixed.  When combined with --auto-zoom, zooming will

         be limited to the specified percent.  Specifying max is like set‐

         ting --auto-zoom, using fill makes feh zoom the image like the

         --bg-fill mode.

Zoom works for me not only in full screen but also with fixed geometry according to the following example,

feh --zoom 200 --geometry 1500x500 zenity-info-message.png

Shellscript that makes feh --zoom nicer

The following shellscript fixes the geometry parameter automatically for each,

#!/bin/bash



function usage {



 echo "Help for ${0##*/} by Nio Wiklund <nio.wiklund at gmail.com>



Usage:

 ${0##*/} [--zoom <percent> [--position <+X+Y>]] <picture-1> [picture-2] [...]



Examples:



feh-zoom --zoom 200 picture.png

feh-zoom --zoom 50 --position +400+200 g*.jpg



    --zoom <percent>

        Zoom images by percent. Will create a correct window size automatically.

        . this option is modified in this shellscript compared to feh.

        

    --position <+X+Y>

        Position of the picture-window's top left corner

        (offset X pixels and Y pixels from the screen's top left cormer)

        . this is an option only for this shellscript, but not for feh.



    <picture-1> [picture-2] [...]

       . Specify at least one picture. Wild-card works, e.g. *.png

 

       . Switch to the next picture with 'q' (while you do it with -> in feh).

         Quit with 'qq' (press 'q' twice within one second).



       . The standard options for feh (for example --randomize) will fail

         because feh is called for one picture eash time in a for-loop, and

         no more options are passed.



If the first option is not --zoom, this shellscript passes control to feh

directly, so that all the standard options for feh will work.



General help for feh: man feh"

}

##############################

if [ "${1}" == "--zoom" ]

then

 shift

 if [ "$1" == "" ]

 then

  usage

 fi

 zoom="$1"



 shift

 if [ "$1" == "" ]

 then

  usage

 fi

 if [ "${1}" == "--position" ]

 then

  shift

  if [ "$1" == "" ]

  then

   usage

  fi

  position="$1"



  shift

  if [ "$1" == "" ]

  then

   usage

  fi

 fi

 cont=1

 for i in "$@"

 do

  if [ $cont -ne 0 ]

  then

   str="$(feh -l "$i"|tail -n1)"

   wide=$(<<< "$str" cut -f3)

   high=$(<<< "$str" cut -f4)

   wide=$((wide*zoom/100+1))

   high=$((high*zoom/100+1))

   geom="${wide}x${high}$position"

#   echo "$geom"

   feh --zoom "$zoom" --geometry "$geom" "$i"

   read -n1 -s -t1 ans

   cont=$?

  else

   exit 0

  fi

 done

elif [ "${1}" == "-h" ] || [ "${1}" == "--help" ]

then

 usage

else

 if [ "$1" == "" ]

 then

  feh

 else

  feh "$@"

 fi

fi

Make the shellscript feh-zoom executable and put it in directory in PATH. There is a help text,

$ feh-zoom -h

Help for feh-zoom by Nio Wiklund <nio.wiklund at gmail.com>



Usage:

 feh-zoom [--zoom <percent> [--position <+X+Y>]] <picture-1> [picture-2] [...]



Examples:



feh-zoom --zoom 200 picture.png

feh-zoom --zoom 50 --position +400+200 g*.jpg



    --zoom <percent>

        Zoom images by percent. Will create a correct window size automatically.

        . this option is modified in this shellscript compared to feh.

        

    --position <+X+Y>

        Position of the picture-window's top left corner

        (offset X pixels and Y pixels from the screen's top left cormer)

        . this is an option only for this shellscript, but not for feh.



    <picture-1> [picture-2] [...]

       . Specify at least one picture. Wild-card works, e.g. *.png

 

       . Switch to the next picture with 'q' (while you do it with -> in feh).

         Quit with 'qq' (press 'q' twice within one second).



       . The standard options for feh (for example --randomize) will fail

         because feh is called for one picture eash time in a for-loop, and

         no more options are passed.



If the first option is not --zoom, this shellscript passes control to feh

directly, so that all the standard options for feh will work.



General help for feh: man feh