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# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

JAVA_PKG_IUSE="doc source"

inherit flag-o-matic java-pkg-2 java-pkg-simple toolchain-funcs

MY_PV="${PV/_rc/RC}"
MY_DMF="https://download.eclipse.org/eclipse/downloads/drops4/R-${MY_PV}-202309031000"
MY_P="${PN}-${MY_PV}"

DESCRIPTION="GTK based SWT Library"
HOMEPAGE="https://www.eclipse.org/swt/"
SRC_URI="
	amd64? ( ${MY_DMF}/${MY_P}-gtk-linux-x86_64.zip )
	arm64? ( ${MY_DMF}/${MY_P}-gtk-linux-aarch64.zip )
	ppc64? ( ${MY_DMF}/${MY_P}-gtk-linux-ppc64le.zip )"

LICENSE="CPL-1.0 LGPL-2.1 MPL-1.1"
SLOT="4.27"
KEYWORDS="~amd64 arm64 ppc64"
IUSE="cairo opengl webkit"

COMMON_DEP="
	app-accessibility/at-spi2-core:2
	dev-libs/glib
	x11-libs/gtk+:3
	x11-libs/libXtst
	cairo? ( x11-libs/cairo )
	opengl?	(
		virtual/glu
		virtual/opengl
	)
	webkit? (
		net-libs/webkit-gtk:4.1
	)"
DEPEND="${COMMON_DEP}
	>=virtual/jdk-11:*[-headless-awt]
	x11-base/xorg-proto
	x11-libs/libX11
	x11-libs/libXrender
	x11-libs/libXt
	x11-libs/libXtst"
RDEPEND="${COMMON_DEP}
	>=virtual/jre-1.8:*"
BDEPEND="
	app-arch/unzip
	virtual/pkgconfig
"

HTML_DOCS=( about.html )

JAVA_RESOURCE_DIRS="resources"
JAVA_SRC_DIR="src"

PATCHES=(
	"${FILESDIR}/swt-4.27-as-needed-and-flag-fixes.patch"
)

src_unpack() {
	default
	unpack "./src.zip"
}

src_prepare() {
	default
	java-pkg-2_src_prepare
	# .css stuff is essential at least for running net-p2p/biglybt
	unzip swt.jar 'org/eclipse/swt/internal/gtk/*.css' -d resources || die
	java-pkg_clean
	mkdir src || die "mkdir failed"
	mv org src || die "moving java sources failed"
	pushd src > /dev/null || die
		find -type f ! -name '*.java' \
			| xargs \
			cp --parent -t ../resources -v \
			|| die "copying resources failed"
	popd > /dev/null || die
	cp version.txt resources || die "adding version.txt failed"
}

src_compile() {
	append-cflags -fcommon # https://bugs.gentoo.org/707838

	local JAWTSO="libjawt.so"
	IFS=":" read -r -a ldpaths <<< $(java-config -g LDPATH)

	for libpath in "${ldpaths[@]}"; do
		if [[ -f "${libpath}/${JAWTSO}" ]]; then
			export AWT_LIB_PATH="${libpath}"
			break
		# this is a workaround for broken LDPATH in <=openjdk-8.292_p10 and <=dev-java/openjdk-bin-8.292_p10
		elif [[ -f "${libpath}/$(tc-arch)/${JAWTSO}" ]]; then
			export AWT_LIB_PATH="${libpath}/$(tc-arch)"
			break
		fi
	done

	if [[ -z "${AWT_LIB_PATH}" ]]; then
		eerror "${JAWTSO} not found in the JDK being used for compilation!"
		die "cannot build AWT library"
	fi

	# Fix the pointer size for AMD64
	export SWT_PTR_CFLAGS=-DJNI64

	# Bug #461784, g_thread_init is deprecated since glib-2.32.
	append-cflags -DNO__1g_1thread_1init

	local make="emake -f make_linux.mak NO_STRIP=y CC=$(tc-getCC) CXX=$(tc-getCXX)"

	einfo "Building AWT library"
	export SWT_JAVA_HOME="$(java-config -g JAVA_HOME)"
	${make} make_awt AWT_LIBS="-L\$(AWT_LIB_PATH) -Wl,-rpath,\$(AWT_LIB_PATH) -ljawt \`pkg-config --libs x11\`"

	einfo "Building SWT library"
	${make} make_swt

	einfo "Building JAVA-AT-SPI bridge"
	${make} make_atk

	if use cairo ; then
		einfo "Building CAIRO support"
		${make} make_cairo
	fi

	if use opengl ; then
		einfo "Building OpenGL component"
		${make} make_glx
	fi

	if use webkit ; then
		einfo "Building WebKit component"
		${make} make_webkit
	fi

	java-pkg-simple_src_compile
}

src_install() {
	java-pkg-simple_src_install

	java-pkg_sointo "/usr/$(get_libdir)/swt"
	java-pkg_doso *.so
}