#!/bin/bash # # Developed by Fred Weinhaus 8/20/2018 .......... revised 8/20/2018 # # ------------------------------------------------------------------------------ # # Licensing: # # Copyright © Fred Weinhaus # # My scripts are available free of charge for non-commercial use, ONLY. # # For use of my scripts in commercial (for-profit) environments or # non-free applications, please contact me (Fred Weinhaus) for # licensing arrangements. My email address is fmw at alink dot net. # # If you: 1) redistribute, 2) incorporate any of these scripts into other # free applications or 3) reprogram them in another scripting language, # then you must contact me for permission, especially if the result might # be used in a commercial or for-profit environment. # # My scripts are also subject, in a subordinate manner, to the ImageMagick # license, which can be found at: http://www.imagemagick.org/script/license.php # # ------------------------------------------------------------------------------ # #### # # USAGE: surroundblur [-r resize] [-b bgsize] [-s smoothing] [-c color] [-t thickness] # [-d darkness] [-f fade] [-e extent] [infile] [outfile] # # USAGE: surroundblur [h|-help] # # OPTIONS: # # -r resize resize of input image; WxH in pixels; default is input size # -b bgsize blurred background size; WxH in pixels; default is twice the # original input size # -s smoothing smoothing (blurring) amount; integer>=0; default=50 # -c color color of border; default=white # -t thickness thickness of the border; integer>=0; default=0 # -d darkeness darkeness of the shadow; 0<=integer<=100; default=60 # -f fade fade rate of the shadow; integer>=0; default=2 # -e extent extent (distance) of the shadow; integer>=0; default=5 # ### # # NAME: SURROUNDBLUR # # PURPOSE: To create a blurred background region around the input image. # # DESCRIPTION: SURROUNDBLUR creates a blurred background region around the input image. # A border and or drop shadow may be added between the image and the blurred background. # # # ARGUMENTS: # # -r resize ... RESIZE of input image expressed as WxH in pixels or in percent as WxH%. # The default is the original input size. The resize value should be smaller than # the bgsize. # # -b bgsize ... BGSIZE is the blurred background size expressed as WxH in pixels or in # percent as WxH%. The default is twice the original input size. The bgsize should be # larger than the resize. # # -s smoothing ... SMOOTHING (blurring) amount to apply to the input to create the # background. Values are integers>=0. The default=50. # # -c color ... COLOR for the border. Any valid opaque IM color is allowed. # The default=white. # # -t thickness ... THICKNESS of the border. Values are integers>=0. The default=0 # (no border) # # -d darkeness ... DARKNESS of the shadows. Values are 0<=integer<=100. The default=80. # # -f fade ... FADE (rolloff) of the shadow darkness. Values are integers>=0. # The default=3. # # -e extent ... EXTENT (distance) of the shadow. Values are integers>=0. The default=0. # (no shadow). Typical value is about 5 # # NOTE: This script is not designed for images with transparency. # # CAVEAT: No guarantee that this script will work on all platforms, # nor that trapping of inconsistent parameters is complete and # foolproof. Use At Your Own Risk. # ###### # # set default values resize="" bgsize="" smoothing=50 color="white" thickness=0 darkeness=80 fade=3 extent=0 # set directory for temporary files dir="." # suggestions are dir="." or dir="/tmp" # set up functions to report Usage and Usage with Description PROGNAME=`type $0 | awk '{print $3}'` # search for executable on path PROGDIR=`dirname $PROGNAME` # extract directory of program PROGNAME=`basename $PROGNAME` # base name of program usage1() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^###/g; /^#/!q; s/^#//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } usage2() { echo >&2 "" echo >&2 "$PROGNAME:" "$@" sed >&2 -e '1,/^####/d; /^######/g; /^#/!q; s/^#*//; s/^ //; 4,$p' "$PROGDIR/$PROGNAME" } # function to report error messages errMsg() { echo "" echo $1 echo "" usage1 exit 1 } # function to test for minus at start of value of second part of option 1 or 2 checkMinus() { test=`echo "$1" | grep -c '^-.*$'` # returns 1 if match; 0 otherwise [ $test -eq 1 ] && errMsg "$errorMsg" } # test for correct number of arguments and get values if [ $# -eq 0 ] then # help information echo "" usage2 exit 0 elif [ $# -gt 18 ] then errMsg "--- TOO MANY ARGUMENTS WERE PROVIDED ---" else while [ $# -gt 0 ] do # get parameter values case "$1" in -h|-help) # help information echo "" usage2 exit 0 ;; -r) # get resize shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID RESIZE SPECIFICATION ---" checkMinus "$1" resize=`expr "$1" : '\([0-9]*[%]*x[0-9]*[%]*\)'` [ "$resize" = "" ] && errMsg "--- RESIZE=$resize MUST BE A PAIR OF NON-NEGATIVE INTEGERS SEPARATED BY AN x ---" ;; -b) # get bgsize shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID BGSIZE SPECIFICATION ---" checkMinus "$1" bgsize=`expr "$1" : '\([0-9]*[%]*x[0-9]*[%]*\)'` [ "$bgsize" = "" ] && errMsg "--- BGSIZE=$bgsize MUST BE A PAIR OF NON-NEGATIVE INTEGERS SEPARATED BY AN x ---" ;; -s) # get smoothing shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID SMOOTHING SPECIFICATION ---" checkMinus "$1" smoothing=`expr "$1" : '\([0-9]*\)'` [ "$smoothing" = "" ] && errMsg "--- SMOOTHING=$smoothing MUST BE A NON-NEGATIVE INTEGER ---" ;; -c) # get color shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID COLOR SPECIFICATION ---" checkMinus "$1" color="$1" ;; -t) # get thickness shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID THICKNESS SPECIFICATION ---" checkMinus "$1" thickness=`expr "$1" : '\([0-9]*\)'` [ "$thickness" = "" ] && errMsg "--- THICKNESS=$thickness MUST BE A NON-NEGATIVE INTEGER ---" ;; -d) # get darkness shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID DARKNESS SPECIFICATION ---" checkMinus "$1" darkness=`expr "$1" : '\([0-9]*\)'` [ "$darkness" = "" ] && errMsg "--- DARKNESS=$darkness MUST BE A NON-NEGATIVE INTEGER ---" testA=`echo "$darkness > 100" | bc` [ $testA -eq 1 ] && errMsg "--- DARKNESS=$darkness MUST BE AN INTEGER BETWEEN 0 AND 100 ---" ;; -f) # get fade shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID FADE SPECIFICATION ---" checkMinus "$1" fade=`expr "$1" : '\([0-9]*\)'` [ "$fade" = "" ] && errMsg "--- FADE=$fade MUST BE A NON-NEGATIVE INTEGER ---" ;; -e) # get extent shift # to get the next parameter # test if parameter starts with minus sign errorMsg="--- INVALID EXTENT SPECIFICATION ---" checkMinus "$1" extent=`expr "$1" : '\([0-9]*\)'` [ "$extent" = "" ] && errMsg "--- EXTENT=$extent MUST BE A NON-NEGATIVE INTEGER ---" ;; -) # STDIN and end of arguments break ;; -*) # any other - argument errMsg "--- UNKNOWN OPTION ---" ;; *) # end of arguments break ;; esac shift # next option done # # get infile and outfile infile="$1" outfile="$2" fi # test that infile provided [ "$infile" = "" ] && errMsg "NO INPUT FILE SPECIFIED" # test that outfile provided [ "$outfile" = "" ] && errMsg "NO OUTPUT FILE SPECIFIED" # setup temporary images tmpA1="$dir/surroundblur_1_$$.mpc" tmpB1="$dir/surroundblur_1_$$.cache" trap "rm -f $tmpA1 $tmpB1; exit 0" 0 trap "rm -f $tmpA1 $tmpB1; exit 1" 1 2 3 15 # read the input image into the temporary cached image and test if valid convert -quiet "$infile" +repage $tmpA1 || echo "--- 1 FILE $infile DOES NOT EXIST OR IS NOT AN ORDINARY FILE, NOT READABLE OR HAS ZERO size ---" # get image dimensions ww=`convert -ping $tmpA1 -format "%w" info:` hh=`convert -ping $tmpA1 -format "%h" info:` # get resize and bgsize dimensions if [ "$resize" = "" ]; then resize=${ww}x${hh} fi if [ "$bgsize" = "" ]; then bww=$((2*ww)) bhh=$((2*hh)) bgsize=${bww}x${bhh} fi # process image if [ "$thickness" = "0" -a "$extent" = "0" ]; then convert $tmpA1 -write mpr:img +delete \ \( mpr:img -resize ${bgsize}^ -crop ${bgsize}+0+0 +repage -blur 0x$smoothing \) \ \( mpr:img -resize ${resize} \) \ -gravity center -compose over -composite "$outfile" elif [ "$extent" = "0" ]; then convert $tmpA1 -write mpr:img +delete \ \( mpr:img -resize ${bgsize}^ -crop ${bgsize}+0+0 +repage -blur 0x$smoothing \) \ \( mpr:img -resize ${resize} -bordercolor "$color" -border $thickness \) \ -gravity center -compose over -composite "$outfile" elif [ "$thickness" = "0" ]; then convert $tmpA1 -write mpr:img +delete \ \( mpr:img -resize ${bgsize}^ -crop ${bgsize}+0+0 +repage -blur 0x$smoothing \) \ \( mpr:img -resize ${resize} \) \ \( +clone -background black -shadow ${darkness}x${fade}+${extent}+${extent} \) \ \( -clone 2,1 -background none -layers merge +repage \) \ -delete 1,2 \ -gravity center -compose over -composite "$outfile" else convert $tmpA1 -write mpr:img +delete \ \( mpr:img -resize ${bgsize}^ -crop ${bgsize}+0+0 +repage -blur 0x$smoothing \) \ \( mpr:img -resize ${resize} -bordercolor "$color" -border $thickness \) \ \( +clone -background black -shadow ${darkness}x${fade}+${extent}+${extent} \) \ \( -clone 2,1 -background none -layers merge +repage \) \ -delete 1,2 \ -gravity center -compose over -composite "$outfile" fi exit 0