#!/bin/bash -e

# taken from gnome-icon-theme package postinst
write_cache()
{
if [ -x /usr/bin/gtk-update-icon-cache ]; then
    if ! gtk-update-icon-cache --force --quiet /usr/share/icons/gnome; then
        echo "WARNING: icon cache generation failed"
    fi
fi
}

if [ "$1" = "triggered" ]; then
    write_cache
    exit 0
fi


if [ "$1" = "configure" -o "$1" = "abort-upgrade" ]; then
    # Alternatives for the background (use higher priority than desktop-base
    update-alternatives --install \
        /usr/share/images/desktop-base/desktop-background \
        desktop-background \
        /usr/share/backgrounds/neurodebian.png 100

    # /usr/share/icons/gnome/scalable/places
    # For now disabled override of start-here since generally there is no alternative,
    # and we must not change content of other packages under /usr. Eventually
    # we might divert original files and add them as alternatives, or hack up our own
    # theme "overlay"
    for d in ; do
        # For the future - we might adjust for other themes as well
        [ -e $d ] || continue
        # push SVG icon and pixmaps for all relevant sizes
        SIZES=$(ls ${d//scalable/*} | sed -rn 's,^.*/([0-9]+)x[0-9]+/.*$,\1,p')
        command="update-alternatives --install $d/start-here.svg start-here.svg /usr/share/pixmaps/neurodebian.svg 100"
        for s in $SIZES; do
          command="$command --slave ${d//scalable/${s}x${s}}/start-here.png start-here-${s}.png /usr/share/pixmaps/neurodebian.png"
        done
        $command
        break
    done

    # let GTK know about the change
    write_cache
fi