PutlogoGUI.sh

#!/bin/bash

#This script helps u to put a logo on pictures using imagemagick and Zenity.
imagemagickInstalled=true
zenityInstalled=true
#Checks that imagemagick is installed.
if ! [ -x "$(command -v composite)" ] 
then
	echo "You don't have imagemagick installed, please install it before trying to run this script."
	imagemagickInstalled=false
fi
#Checks that zenity is installed.
if ! [ -x  "$(command -v zenity)" ]
then
	echo "Zenity isn't installed, please install it before trying to run this script."
    zenityInstalled=false
fi

#Exits if either of them aren't installed.
if ! [[ $imagemagickInstalled == true && $zenityInstalled == true ]]
then
    exit
fi
#Logo path
if [[ "$1" == "" ]]
then
    while [[ 1 ]]
    do
        flogoname=`zenity --title "Please choose the file for the logo" --file-selection  --filename /home/$USER/ >&1`;
        case $? in
                0)
                    echo "$flogoname chosen as logo."
                    break;;
                1)
                    echo "Box closed."
                    exit;;
        esac
    done
else
    flogoname="$1";
fi 

#Photos path
if [[ "$2" == "" ]]
then
    while [[ 1 ]]
    do
        picsPath=`zenity --title "Please choose the directory for the pics." --file-selection --directory --filename /home/$USER/ >&1`;
        case $? in
                0)
                    picsPath=$picsPath"/"
                    echo "$picsPath chosen as directory for pics."
                    break;;
                1)
                    echo "Box closed."
                    exit;;
        esac
    done
    

else
    picsPath="$2";
fi

#Logo position
if [[ "$3" == "" ]]
then
    while [[ 1 ]]
    do
        corner=$(zenity --title "Logo Location" \
            --text "Choose the corner for the logo" \
            --list --radiolist \
            --column=" " \
            --column="Number" \
            --column="Location" \
            1 "1" "Top Right"  \
            2 "2" "Top Left"  \
            3 "3" "Bottom Right"  \
            4 "4" "Bottom Left"  >&1)
        
        if [[ $corner == "" ]]
        then
            exit
        else
            echo "The chosen corner is: $corner"
            break
        fi
    done
else
    corner="$3";
fi

#Logo size
if [[ "$4" == "" ]]
then
    while [[ 1 ]]
    do
        size=$(zenity >&1 --scale --title="Logo Size" \
            --text="Choose the size of the logo" --min-value=1 \
            --max-value=100 --value=20)
        if [[ $size == "" ]]
        then
            exit
        else
            echo "The chosen size is: $size%"
            break
        fi
    done
else
    size=$4;
fi

#Output is where the results is going to be generated
if [ ! -d "Output" ]
then
    mkdir Output
fi

#An array containing the options for imagemagick to be able to pass them.
e=(NorthEast NorthWest SouthEast SouthWest);



for h in  "$picsPath"*.*
	do
		if [[ ! -d "$h" ]]
		then
			#differentiate between portrait and landscape photos taken by digital cameras with EXIF in it
			convert "$h" -auto-orient "$h" 
		
			#getting the each photo's width
			pwidth=$(convert "$h" -print "%w %h\\n" /dev/null);
			pwidth=$(echo "$pwidth" | cut -d ' ' -s -f2);
		
			#getting the file extinsion
			ext='.';
			ext+="echo $flogoname | rev | cut -d '.' -s -f1 |rev";
		
			#the new resulting photo's postion
			slogoname="Output/$(basename "$flogoname" "$ext").png"
	
			#make the logo's width and height a precentage of the photo's width 
			z=$((pwidth*size/100));
			float=$z;
			float+="x";
			float+=$z;
		
			#resizing the logo to fit the photo
			convert -background none "$flogoname" -resize "$float" "$slogoname" ;
			
			i=$(echo "$h" |rev| cut -d / -s -f 1|rev);
			echo " Processing " "$i"
			#putting the logo on the photo
			composite -background none -gravity "${e[(($corner-1))]}" "$slogoname" "$h" ./Output/"$i" 
		fi
	done

echo "You are done, thank you!"