#!/bin/bash

# This file is part of the PyOWS-WMS-Server package (= program).
# 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, see <http://www.gnu.org/licenses/>.
#
# author(s): Sebastian Holler <shgeo/at/online.de>
#
# Copyright (c)2008 by Sebastian Holler


# for document references, used in this source code: see <README_dev>

# use: convert text into an image
# run this script in shell environment!!

# input (via stdin): width#height#format[png|gif|jpg]#\n
#                    text
# output: image with defined format

CONV_TXT_FILE=${SHELL_TMPDIR}_inimage.text

cat /dev/stdin > ${CONV_TXT_FILE}

ORIG_IFS=$IFS
IFS="#"
read CONV_WIDTH CONV_HEIGHT CONV_FORMAT <<END
$(head -n 1 ${CONV_TXT_FILE})
END
IFS=$ORIG_IFS

CONV_IMG_FILE=${SHELL_TMPDIR}_inimage.${CONV_FORMAT}

# convert -> "text in images" options, see: http://www.imagemagick.org/Usage/text/
sed -n '2,$ p' ${CONV_TXT_FILE} | \
   convert -background "#FFFFFF" -fill black -size ${CONV_WIDTH}x${CONV_HEIGHT} \
      -pointsize 10 -gravity Center caption:@- "${CONV_IMG_FILE}"
rm -f "${CONF_TXT_FILE}"

echo -n "${CONV_IMG_FILE}"