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add a CMAKE script which converts a *.png file into a *.cpp file

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Dick Hollenbeck 2011-08-24 01:18:36 -05:00
parent 5432a52192
commit f577f18bf7
1 changed files with 81 additions and 0 deletions
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CMakeModules/PNG2cpp.cmake Normal file
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# This program source code file is part of KICAD, a free EDA CAD application.
#
# Copyright (C) 2011 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
# Copyright (C) 2011 Kicad Developers, see change_log.txt for contributors#.
#
# 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, you may find one here:
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# or you may search the http://www.gnu.org website for the version 2 license,
# or you may write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
#############################################################################
#
# This script converts a *.png file into a *.cpp file.
# The *.cpp file will contain a BITMAP_DEF structure, which is simply a byte
# array and a length of bytes which were found in the *.png file.
#
#
# Invocation Parameters are: inputFile, outCppFile
#
# inputFile - Required, full path and file name of the input PNG file
#
# outCppFile - Required, full path and file name of where to save the
# generated cpp file.
file( READ ${inputFile} file_contents HEX )
get_filename_component( png_name "${inputFile}" NAME_WE )
# split into pairs of ASCII, where each pair gives a single byte's value
string( REGEX MATCHALL "[0-9a-fA-F][0-9a-fA-F]" byte_list ${file_contents} )
set( output_begin "
/* Do not modify this file, it was automatically generated by the
* PNG2cpp CMake script, using a *.png file as input.
*/
#include \"bitmaps.h\"
static const unsigned char png[] = {"
)
set( output_end "};
BITMAP_DEF ${png_name} = { png, sizeof(png) };
//EOF
" )
set( byte_count 0 )
set( byte_array "" )
foreach( byte ${byte_list} )
math( EXPR modulus "${byte_count} % 16" )
if( modulus EQUAL 0 )
set( byte_array "${byte_array}\n" )
endif()
set( byte_array "${byte_array} 0x${byte}," )
math( EXPR byte_count "${byte_count} + 1" )
endforeach()
set( byte_array "${byte_array}\n" )
file( WRITE ${outCppFile} "${output_begin}" )
file( APPEND ${outCppFile} "${byte_array}" )
file( APPEND ${outCppFile} "${output_end}" )