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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

inherit java-pkg-2 desktop

MY_PN="ij"
IJ_PV="154" #plugins now available for 154

DESCRIPTION="Image Processing and Analysis in Java"

HOMEPAGE="
	https://imagej.net/software/imagej/
	https://github.com/imagej
"

SRC_URI="
	https://imagej.net/media/icons/imagej.png
	plugins? ( https://wsr.imagej.net/distros/cross-platform/${MY_PN}${IJ_PV}.zip )"
# plugins are under a different licenses and can be installed into user's $IJ_HOME/plugins

if [[ ${PV} == 9999 ]]; then
	inherit git-r3
	EGIT_REPO_URI="https://github.com/imagej/ImageJ"
	IJ_S="${S}/ImageJ"
else
	SRC_URI+="
		https://github.com/imagej/ImageJ/archive/refs/tags/v${PV}.tar.gz -> ${P}.gh.tar.gz
	"
	S="${WORKDIR}/ImageJ-${PV}"
	IJ_S="${WORKDIR}/ImageJ"
	KEYWORDS="~amd64"
fi

LICENSE="public-domain"

SLOT="0"

IUSE="doc plugins debug"

RDEPEND="
	>=virtual/jre-1.7:*
	dev-java/java-config
"

DEPEND="
	${RDEPEND}
	>=virtual/jdk-1.7:*
"

BDEPEND="
	app-arch/unzip
"

src_prepare() {
	cp "${DISTDIR}"/imagej.png "${WORKDIR}/${PN}.png" || die

	if [[ ${PV} == 9999 ]]; then
	   if use plugins ; then
		  unpack "${MY_PN}${IJ_PV}.zip"
	   fi
	fi

	if ! use debug ; then
		sed -i 's: debug="on">: debug="off">:' "${S}"/build.xml || die
	fi
	sed -i -E 's/source="[0-9.]+"//g' build.xml || die
	sed -i -E 's/target="[0-9.]+"//g' build.xml || die

	default
}

src_compile() {
	local antflags="build"
	use doc && antflags="${antflags} javadocs"

	eant ${antflags} \
		-Dant.build.javac.source="$(java-pkg_get-source)" \
		-Dant.build.javac.target="$(java-pkg_get-target)"

	# Max memory usage depends on available memory and CPU type
	MEM=$(grep MemTotal /proc/meminfo | cut -d':' -f2 | grep -o [0-9]*)
	IJ_MAX_MEM=$(expr ${MEM} / 1024)

	if use x86 && $IJ_MAX_MEM -gt 2048 ; then
	   IJ_MAX_MEM=2048
	fi

	# build finished, generate startup wrapper
	cat <<EOF > "${T}/${PN}"
#!${EPREFIX}/bin/bash
IJ_LIB=${EPREFIX}/usr/share/${PN}/lib
if !([ "\${IJ_HOME}" ]) ; then
	IJ_HOME=\${HOME}/.imagej
fi
if [ -d \${IJ_HOME}/plugins ] ; then
	IJ_PLG=\${IJ_HOME}
else
	IJ_PLG=${EPREFIX}/usr/share/${PN}/lib
fi
if !([ "\$IJ_MEM" ]) ; then
	IJ_MEM=${IJ_MAX_MEM}
fi
if !([ "\$IJ_CP" ]) ; then
	IJ_CP=\$(java-config -p imagej):\$(java-config -O)/lib/tools.jar
else
	IJ_CP=\$(java-config -p imagej):\$(java-config -O)/lib/tools.jar:\${IJ_CP}
fi
\$(java-config --java) \\
	-Xmx\${IJ_MEM}m -Dswing.aatext=true \\
	-Dawt.useSystemAAFontSettings=on\\
	-cp \${IJ_CP} \\
	-Duser.home=\${IJ_HOME} \\
	-Dplugins.dir=\${IJ_PLG} \\
	ij.ImageJ "\$@"
EOF
}

src_install() {
	java-pkg_dojar *.jar
	dobin "${T}/${PN}"

	if use plugins ; then
		cp -R "${IJ_S}"/plugins "${ED}"/usr/share/"${PN}"/lib/
		cp -R "${IJ_S}"/macros "${ED}"/usr/share/"${PN}"/lib/
	fi

	use doc && java-pkg_dohtml -r "${WORKDIR}"/api

	insinto /usr/share/pixmaps
	doins "${WORKDIR}/${PN}".png
	make_desktop_entry "${PN}" ImageJ "${PN}" Graphics
}

pkg_postinst() {
	einfo ""
	einfo "You can configure the path of a folder, which contains \"plugins\" directory and IJ_Prefs.txt,"
	einfo "by setting the environmental variable, \$IJ_HOME."
	einfo "Default setting is \$IJ_HOME=\${HOME}/.imagej, i.e. \${HOME}/.imagej/plugins and \${HOME}/.imagej/IJ_Prefs.txt."
	einfo ""
	einfo "You can also configure the memory size by setting the environmental variable, \$IJ_MEM,"
	einfo "and the class path by setting the environmental variable, \$IJ_CP."
	einfo ""
	einfo "If you want to use much more plugins, please see http://rsb.info.nih.gov/ij/plugins/index.html"
	einfo "and add *.class files to \$IJ_HOME/plugins folder"
	einfo ""
}