SquirrelJME/SquirrelJME

#!/bin/sh

# Figure out what the scaling should be so it is not ultra-tiny
if [ -n "$GDK_SCALE" ]
then
    __scale="$GDK_SCALE"
elif [ -n "$GDK_DPI_SCALE" ]
then
    __scale="$GDK_DPI_SCALE"
elif [ -n "$QT_SCALE_FACTOR" ]
then
    __scale="$QT_SCALE_FACTOR"
elif [ -n "$QT_FONT_DPI" ]
then
    __dpi="$QT_FONT_DPI"
elif [ -n "$ELM_SCALE" ]
then
    __scale="$ELM_SCALE"
elif [ -f "$HOME/.Xresources" ]
then
    __dpi="$(grep 'Xft.dpi' < "$HOME/.Xresources" | cut -d ':' -f 2 |
        tr -d ' ')"
else
    __scale=1
fi

# If a DPI used, map to a scale
if [ -n "$__dpi" ]
then
    __div="$(expr "$__dpi" / 96)"
    __mod="$(expr "$__dpi" % 96)"
    
    # Scale is on the higher end, so round up
    if [ "$__mod" -ge "48" ]
    then
        __scale="$(expr "$__div" + 1)"
    else
        __scale="$__div"
    fi
fi

# If scale is not valid, just default to 1
if [ -z "$__scale" ] || ! [ "$__scale" -ge "-666" ] 2> /dev/null ||
    [ "$__scale" -le "0" ] 2> /dev/null
then
    __scale=1
fi

# Note that only whole numbers are supported... so round up for the user!
if echo "$__scale" | grep '\.' > /dev/null
then
    __int="$(echo "$__scale" | cut -d '.' -f 1)"
    __dec="$(echo "$__scale" | cut -d '.' -f 2)"
    
    # Should this round up? Also consider 1.75 and such...
    if [ "$__dec" -lt "10" ] && [ "$__dec" -ge "5" ]
    then
        __scale="$(expr "$__int" + 1)"
    
    # Duplicate because we do not want to fork!
    elif [ "$__dec" -ge "10" ] && [ "$__dec" -ge "50" ]
    then
        __scale="$(expr "$__int" + 1)"
        
    # Round down
    else
        __scale="$__int"
    fi
fi

# Run SquirrelJME!
/app/jre/bin/java "-Dsun.java2d.uiScale=$__scale" \
    -jar /app/bin/squirreljme-standalone.jar "$@"
exit $?