98 lines
2.3 KiB
Plaintext
98 lines
2.3 KiB
Plaintext
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#!/bin/bash
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# Defaults
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# All options are here: http://www.imagemagick.org/Usage/blur/#blur_args
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BLURTYPE="0x6"
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#BLURTYPE="0x2"
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#BLURTYPE="5x3"
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#BLURTYPE="2x8"
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#BLURTYPE="2x3"
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DISPLAY_RE="([0-9]+)x([0-9]+)\\+([0-9]+)\\+([0-9]+)"
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IMAGE_RE="([0-9]+)x([0-9]+)"
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FOLDER="$(dirname "$(readlink -f "$0")")"
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LOCK="$FOLDER/lock.png"
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TEXT="$FOLDER/text.png"
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PARAMS=""
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OUTPUT_IMAGE="/tmp/i3lock.png"
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DISPLAY_TEXT=true
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PIXELATE=false
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# Read user input
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POSITIONAL=()
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while [[ $# -gt 0 ]]
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do
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key="$1"
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case $key in
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-n|--no-text)
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DISPLAY_TEXT=false
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shift # past argument
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;;
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-p|--pixelate)
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PIXELATE=true
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shift # past argument
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;;
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*) # unknown option
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POSITIONAL+=("$1") # save it in an array for later
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shift # past argument
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;;
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esac
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done
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set -- "${POSITIONAL[@]}" # restore positional parameters
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#Take screenshot:
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scrot -z $OUTPUT_IMAGE
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#Get dimensions of the lock image:
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LOCK_IMAGE_INFO=`identify $LOCK`
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[[ $LOCK_IMAGE_INFO =~ $IMAGE_RE ]]
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IMAGE_WIDTH=${BASH_REMATCH[1]}
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IMAGE_HEIGHT=${BASH_REMATCH[2]}
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if $DISPLAY_TEXT ; then
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#Get dimensions of the text image:
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TEXT_IMAGE_INFO=`identify $TEXT`
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[[ $TEXT_IMAGE_INFO =~ $IMAGE_RE ]]
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TEXT_WIDTH=${BASH_REMATCH[1]}
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TEXT_HEIGHT=${BASH_REMATCH[2]}
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fi
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#Execute xrandr to get information about the monitors:
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while read LINE
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do
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#If we are reading the line that contains the position information:
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if [[ $LINE =~ $DISPLAY_RE ]]; then
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#Extract information and append some parameters to the ones that will be given to ImageMagick:
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WIDTH=${BASH_REMATCH[1]}
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HEIGHT=${BASH_REMATCH[2]}
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X=${BASH_REMATCH[3]}
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Y=${BASH_REMATCH[4]}
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POS_X=$(($X+$WIDTH/2-$IMAGE_WIDTH/2))
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POS_Y=$(($Y+$HEIGHT/2-$IMAGE_HEIGHT/2))
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PARAMS="$PARAMS '$LOCK' '-geometry' '+$POS_X+$POS_Y' '-composite'"
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if $DISPLAY_TEXT ; then
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TEXT_X=$(($X+$WIDTH/2-$TEXT_WIDTH/2))
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TEXT_Y=$(($Y+$HEIGHT/2-$TEXT_HEIGHT/2+200))
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PARAMS="$PARAMS '$TEXT' '-geometry' '+$TEXT_X+$TEXT_Y' '-composite'"
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fi
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fi
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done <<<"`xrandr`"
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#Execute ImageMagick:
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if $PIXELATE ; then
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PARAMS="'$OUTPUT_IMAGE' '-scale' '10%' '-scale' '1000%' $PARAMS '$OUTPUT_IMAGE'"
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else
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PARAMS="'$OUTPUT_IMAGE' '-level' '0%,100%,0.6' '-blur' '$BLURTYPE' $PARAMS '$OUTPUT_IMAGE'"
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fi
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eval convert $PARAMS
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#Lock the screen:
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i3lock -i $OUTPUT_IMAGE -t
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#Remove the generated image:
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rm $OUTPUT_IMAGE
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