#!/bin/bash

#

# svg_convertPngToDm.sh -- This function standardize production of

# display managers (e.g., Gdm and Kdm). This function copies all files

# needed into a temporal directory, realize expansion of translation

# markers and packs all the files into a tar.gz package that is used

# for installation. This function must be used as last-rendition

# action for Gdm and Kdm directory specific base-rendition actions.

#

# Copyright (C) 2009, 2010, 2011 The CentOS Artwork SIG

#

# 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 svg_convertPngToDm {

    # Print separator line.

    cli_printMessage '-' --as-separator-line

    # Initialize source and destination local variables.

    local SRC=''

    local DST=''

    # Initialize display manager type.

    local DM=$(${CLI_FUNCNAME}_getConfigOption "${ACTION}" '2')

    # Initialize screen resolutions used by display manager theme.

    # These are the different screen resolutions a display manager

    # theme is built for. The amount of screen resolution a display

    # manager theme can be built for is limited to the amount of

    # background files provided by the artistic motif used to build

    # the display manager theme.

    local RESOLUTION=''

    local RESOLUTIONS=$(${CLI_FUNCNAME}_getConfigOption "${ACTION}" '3')

    # Verify screen resolutions. We cannot produce display manager

    # theme if no screen resolution has been specified.

    if [[ "$RESOLUTIONS" == '' ]];then

        cli_printMessage "`gettext "There is no resolution information to process."`" --as-error-line

    fi

    # Initialize theme information we are going to build the display

    # manager theme for.

    local THEME=$(cli_getPathComponent $ACTIONVAL --motif)

    local THEME_NAME=$(cli_getPathComponent $ACTIONVAL --motif-name)

    # Initialize temporal directory where we collect all files needed

    # in order to create the tar.gz file. This intermediate step is

    # also needed in order to expand translation markers from XML and

    # Desktop definitions.

    local TMPDIR=$(cli_getTemporalFile 'dm')

    # Initialize source location for brands. This is the place where

    # brand information, needed to build the display manager theme, is

    # retrived from.

    local BRANDS=$(cli_getRepoTLDir)/Identity/Images/Brands

    # Initialize source location for artistic motif's backgrounds.

    # This is the place where background information needed to ubild

    # the display manager theme is retrived from. 

    local BGS=$(cli_getRepoTLDir)/Identity/Images/Themes/${THEME}/Backgrounds/Img/Png

    # Initialize file variables. File variables are used build and

    # process the file relation between source and target locations. 

    local FILE=''

    local FILES=''

    # Define file relation between source and target locations, based

    # on whether we are producing GDM or KDM. Use the colon character

    # (`:') as separator; on the left side we put the file's source

    # location and in the right side the file's target location.

    # Presently, both GDM and KDM are very similar on files with the

    # exception that GDM does use icons near actions buttons (e.g.,

    # shutdown, reboot, session, language) and KDM doesn't.

    case ${DM} in

        Gdm )

            FILES="\

            ${BRANDS}/Symbols/48/centos.png:centos-symbol.png

            ${OUTPUT}/release.png:centos-release.png

            ${OUTPUT}/screenshot.png:screenshot.png

            $(dirname $TEMPLATE)/GdmGreeterTheme.xml:${THEME_NAME}.xml

            $(dirname $TEMPLATE)/GdmGreeterTheme.desktop:GdmGreeterTheme.desktop

            $(dirname $TEMPLATE)/icon-language.png:icon-language.png

            $(dirname $TEMPLATE)/icon-reboot.png:icon-reboot.png

            $(dirname $TEMPLATE)/icon-session.png:icon-session.png

            $(dirname $TEMPLATE)/icon-shutdown.png:icon-shutdown.png

            "

            ;;

        Kdm )

            FILES="\

            ${BRANDS}/Symbols/48/centos.png:centos-symbol.png

            ${OUTPUT}/release.png:centos-release.png

            ${OUTPUT}/screenshot.png:screenshot.png

            $(dirname $TEMPLATE)/GdmGreeterTheme.xml:${THEME_NAME}.xml

            $(dirname $TEMPLATE)/GdmGreeterTheme.desktop:GdmGreeterTheme.desktop

            "

            ;;

        * )

            cli_printMessage "`eval_gettext "The \\\"\\\$DM\\\" display manager is not supported yet."`" --as-error-line

            ;;

    esac

    for FILE in $FILES;do

        # Define source location.

        SRC=$(echo $FILE | cut -d: -f1)

        # Define target location.

        DST=${TMPDIR}/${THEME_NAME}/$(echo $FILE | cut -d: -f2)

        # Verify source files.

        cli_checkFiles $SRC

        # Verify parent directory for target file.

        if [[ ! -d $(dirname $DST) ]];then

            mkdir -p $(dirname $DST)

        fi

        # Copy files from source to target location.

        cp ${SRC} ${DST}

        # Expand translation markers.

        if [[ ${DST} =~ "\.(xml|desktop)$"  ]];then

            cli_expandTMarkers "${DST}"

        fi

    done

    # Move into temporal directory.

    pushd $TMPDIR > /dev/null

    for RESOLUTION in $RESOLUTIONS;do

        # Verify background information. If it doesn't exist go on

        # with the next one in the list.

        if [[ ! -f $BGS/${RESOLUTION}-final.png ]];then

            continue

        fi

        # Print action message.

        if [[ -f ${RESOLUTION}.tar.gz ]];then

            cli_printMessage "${OUTPUT}/${RESOLUTION}.tar.gz" --as-updating-line

        else

            cli_printMessage "${OUTPUT}/${RESOLUTION}.tar.gz" --as-creating-line

        fi

        # Copy background information.

        cp $BGS/${RESOLUTION}-final.png ${THEME_NAME}/background.png

        # Create tar.gz file.

        tar -czf ${RESOLUTION}.tar.gz ${THEME_NAME}

        # Move from temporal directory to its final location.

        mv ${RESOLUTION}.tar.gz ${OUTPUT}

    done

    # Return to where we were initially.

    popd > /dev/null

    # Remove temporal directory.

    rm -r ${TMPDIR}

}