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#!/usr/bin/python
#
# $Id: convert-icon 704 2006-10-18 00:51:11Z fraggle $
#
# Copyright(C) 2005 Simon Howard
#
# 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., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#
# Converts images into C structures to be inserted in programs
#

import sys
import os
import re

try:
        import Image
except ImportError:
        print "WARNING: Could not update %s.  Please install the Python Image library." % sys.argv[2]
        sys.exit(0)


def convert_image(filename, output_filename):

    im = Image.open(filename).convert("RGB")

    outfile = open(output_filename, "w")

    size = im.size

    struct_name = os.path.basename(filename)
    struct_name = re.sub(re.compile("\\..*$"), "", struct_name)
    struct_name = re.sub(re.compile("\W"), "_", struct_name)

    outfile.write("static int %s_w = %i;\n" % (struct_name, size[0]))
    outfile.write("static int %s_h = %i;\n" % (struct_name, size[1]))

    outfile.write("\n")
    outfile.write("static unsigned char %s_data[] = {\n" % (struct_name))

    elements_on_line = 0

    outfile.write("    ")

    for y in range(size[1]):
        for x in range(size[0]):
            val = im.getpixel((x, y))
            outfile.write("0x%02x,0x%02x,0x%02x,  " % val)
            elements_on_line += 1

            if elements_on_line >= 4:
                elements_on_line = 0
                outfile.write("\n")
                outfile.write("    ")

    outfile.write("\n")
    outfile.write("};\n")

convert_image(sys.argv[1], sys.argv[2])