Blame Scripts/Functions/Render/Svg/svg_convertPngToBranded.sh

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#!/bin/bash
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#
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# svg_convertPngToBranded.sh -- This function standardizes image
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# branding. Once the base PNG image is rendered and the
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# `--with-brands' option is provided, this function composites a new
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# branded image using the preferences set in the `branding.conf' file.
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# The `branding.conf' file must be stored in the design model root
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# location used as reference to produce the base PNG image.
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#
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# Copyright (C) 2009, 2010, 2011 The CentOS Project
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# ----------------------------------------------------------------------
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# $Id$
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# ----------------------------------------------------------------------
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function svg_convertPngToBranded {
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    # Verify whether the option `--with-brands' was provided or not to
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    # `centos-art.sh' script command-line.
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    if [[ $FLAG_WITH_BRANDS == 'false' ]];then
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        return
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    fi
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    local BRANDING_CONF_FILE=''
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    local BRANDING_CONF_SECTION=''
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    local BRANDING_CONF_VALUES=''
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    local BRANDING_CONF_VALUE=''
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    local BRAND=''
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    local POSITION=''
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    local POSITIONS=''
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    # Define absolute path to branding configuration file.
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    BRANDING_CONF_FILE="$(cli_getRepoTLDir)/Identity/Models/Themes/${FLAG_THEME_MODEL}/branding.conf"
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    # Define regular expression matching the variable name (i.e., the
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    # left column), inside the configuration line, you want to match
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    # on.
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    BRANDING_CONF_VARNAME=$(echo $TEMPLATE | cut -d/ -f10-)
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    # Define list of configuration lines related to current design
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    # model. This are the lines that tell us how and where to apply
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    # branding information on base PNG image. Be sure that only
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    # configuration lines from supported section names (e.g.,
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    # `symbol', `type', `logo') be read, no need to waste resources
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    # with others.
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    BRANDING_CONF_VALUES=$(\
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        for BRANDING_CONF_SECTION in $(echo "types symbols logos");do
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            cli_getConfigValue "${BRANDING_CONF_FILE}" "${BRANDING_CONF_SECTION}" "${BRANDING_CONF_VARNAME}"
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        done)
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    for BRANDING_CONF_VALUE in $BRANDING_CONF_VALUES;do
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        # Define absolute path to image file used as brand. This is
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        # the image put over the PNG image produced as result of
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        # design models base rendition.
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        BRAND="$(cli_getRepoTLDir)/Identity/Images/Brands/$(echo $BRANDING_CONF_VALUE \
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            | gawk 'BEGIN{ FS=":" } { print $1 }')"
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        # Verify absolute path to image file used as brand. Assuming
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        # no brand image file is found, continue with the next
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        # configuration line.
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        if [[ ! -f $BRAND ]];then
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            continue
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        fi
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        # Define list of positions using the format of ImageMagick
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        # `-geometry' option argument. 
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        POSITIONS=$(echo "$BRANDING_CONF_VALUE" | cut -d: -f2- | tr ':' ' ')
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        # Loop through list of brand image positions and use the
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        # composite command from ImageMagick, to overlap brand image
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        # over unbranded image just rendered.
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        for POSITION in $POSITIONS;do
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            composite -geometry $POSITION $BRAND ${FILE}.png ${FILE}.png
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        done
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    done
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}