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75 lines
1.6 KiB
Bash
75 lines
1.6 KiB
Bash
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#!/usr/bin/env bash
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#
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# Little tool to help with doing screenshots.
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#
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# Run: ./screenshot.sh output.png
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#
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# Then select a window. It will create a screenshot from that window,
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# cut (optionally) some pixels (removes the browser bar) and then
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# resizes it to some maximum width.
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set -e
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# input file
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file=/tmp/screenshot.png
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# final output file
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out=/tmp/screenshot-out.png
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# image dimension ratio w:h
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ratio=${RATIO:-"16:9"}
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# cut that much from the top to remove browser bar (my firefox settings)
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top_cut=${TOP_CUT:-85}
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# maximum width of final image
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maxw=${MAXW:-1200}
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# time to wait in secs
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waitsec=${WAIT_SEC:-3}
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#### Main ############
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work=/tmp/screenshot-work.png
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debug() {
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(1>&2 echo "$@")
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}
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scrot -s -c -d $waitsec "$file" 1>&2
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cp "$file" "$work"
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read -r w h < <(identify -verbose $file |\
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grep "Geometry:" | \
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cut -d':' -f2 | \
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cut -d'+' -f1 | \
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tr 'x' ' ' | xargs)
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debug "Original size: ${w}x${h}"
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read nw nh < <(echo $ratio | tr ':' ' ')
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# remove browser bar from top
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((h=$h - $top_cut))
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# create height to match ratio
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((newH=($w * $nh) / $nw))
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if [ $newH -gt $h ]; then
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debug "Cropping to $w x $h"
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debug "Cannot crop to ratio without reducing width"
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convert -crop ${w}x${h}+0+${top_cut} "$work" "$out"
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else
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debug "Cropping to $w x $h"
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convert -crop ${w}x${newH}+0+${top_cut} "$work" "$out"
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fi
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cp "$out" "$work"
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debug "Resize to max width $maxw"
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convert -resize $maxw "$work" "$out"
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rm -f "$work" "$file"
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if [ -z "$1" ]; then
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echo "$out"
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else
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mv "$out" "$1"
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echo "$1"
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fi
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