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#!/usr/bin/env bash
clear_screen() {
printf '\e[%sH\e[9999C\e[1J%b\e[1;%sr' \
"$((LINES-2))" "${TMUX:+\e[2J}" "$max_items"
}
# Get a file's mime_type.
mime_type=$(file -bi "$1")
# File isn't an image file, give warning.
if [[ $mime_type != image/* ]]; then
lf -remote "send $id echoerr 'Not an image'"
exit
fi
w3m_paths=(/usr/{local/,}{lib,libexec,lib64,libexec64}/w3m/w3mi*)
read -r w3m _ < <(type -p w3mimgdisplay "${w3m_paths[@]}")
read -r LINES COLUMNS < <(stty size)
# Get terminal window size in pixels and set it to WIDTH and HEIGHT.
export $(xdotool getactivewindow getwindowgeometry --shell)
# Get the image size in pixels.
read -r img_width img_height < <("$w3m" <<< "5;${CACHE:-$1}")
((img_width > WIDTH)) && {
((img_height=img_height*WIDTH/img_width))
((img_width=WIDTH))
}
((img_height > HEIGHT)) && {
((img_width=img_width*HEIGHT/img_height))
((img_height=HEIGHT))
}
# Variable needed for centering image.
HALF_HEIGHT=$(expr $HEIGHT / 2)
HALF_WIDTH=$(expr $WIDTH / 2)
HALF_IMG_HEIGHT=$(expr $img_height / 2)
HALF_IMG_WIDTH=$(expr $img_width / 2)
X_POS=$(expr $HALF_WIDTH - $HALF_IMG_WIDTH)
Y_POS=$(expr $HALF_HEIGHT - $HALF_IMG_HEIGHT)
clear_screen
# Hide the cursor.
printf '\e[?25l'
# Display the image.
printf '0;1;%s;%s;%s;%s;;;;;%s\n3;\n4\n' \
${X_POS:-0} \
${Y_POS:-0} \
"$img_width" \
"$img_height" \
"${CACHE:-$1}" | "$w3m" &>/dev/null
# Wait for user input.
read -ern 1
# Clear the image.
printf '6;%s;%s;%s;%s\n3;' \
"${X_POS:-0}" \
"${Y_POS:-0}" \
"$WIDTH" \
"$HEIGHT" | "$w3m" &>/dev/null
clear_screen
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