#!/bin/bash
#
# render_mogrifyCommentToPng.sh -- This function provides
# post-rendition to write a commentary in PNG images produced as
# result of centos-art.sh base-rendition action. The commentary is
# written in the image datastream and can be seen using the command
# `identify -verbose file.png'.
#
# Copyright (C) 2009-2011 Alain Reguera Delgado
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# ----------------------------------------------------------------------
# $Id$
# ----------------------------------------------------------------------

function render_mogrifyCommentToPng {

    # Define commentary you want to write on PNG images.
    local COMMENT="`gettext "Created in CentOS Artwork Repository"` (https://projects.centos.org/svn/artwork/)."

    # Check base file existence.
    cli_checkFiles ${FILE}.png 'f'

    # Write commentary to PNG image.
    mogrify -comment "$COMMENT" ${FILE}.png

}