diff --git a/media-libs/quarter/Manifest b/media-libs/quarter/Manifest
index b2357cfa36b2..ff468bdb021b 100644
--- a/media-libs/quarter/Manifest
+++ b/media-libs/quarter/Manifest
@@ -1 +1,2 @@
 DIST quarter-1.2.2-src.tar.gz 6709135 BLAKE2B 7294236c446ba4389cc89987cf0c461a1414405142a7d943faf8fd215f3ad103994b2cee600b9b8fad56102a7046b3d59de5b6accb748924f8bac604d5ca180c SHA512 a8e0edf1ce6155aef52392a94dbc0f9692c98e295124ac2e7465bde5398f0716822e606b924194251091f7ae3dd39dd134d5a3fdd8a745f22a94c159553271a1
+DIST quarter-1.2.3-src.tar.gz 6709677 BLAKE2B 219a3ca2ab843b81ffe51b6170ca0206a3ed4602c7e9a1b0e364accdabacadb03b54c48af2597ae1c1fa0f8bfa6c63701be733a1ce8c2ce09c4181a9705489d9 SHA512 905039dc2c5231b89272ba02aaf41e43b2632367a7bac09f579c4f6569f0cd9cf5003f3a8e315adc9f5c6b1b138ea137a09012888f2d9f59249c76fdf085eaf4
diff --git a/media-libs/quarter/quarter-1.2.3.ebuild b/media-libs/quarter/quarter-1.2.3.ebuild
new file mode 100644
index 000000000000..db81f795c25f
--- /dev/null
+++ b/media-libs/quarter/quarter-1.2.3.ebuild
@@ -0,0 +1,66 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake flag-o-matic
+
+DESCRIPTION="GUI binding for using Coin/Open Inventor with Qt"
+HOMEPAGE="https://github.com/coin3d/coin/wiki"
+SRC_URI="https://github.com/coin3d/quarter/releases/download/v${PV}/${P}-src.tar.gz"
+S="${WORKDIR}/quarter"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="debug designer doc qch"
+
+REQUIRED_USE="qch? ( doc )"
+
+RDEPEND="
+	dev-qt/qtbase:6[gui,opengl,widgets]
+	dev-qt/qttools:6[widgets]
+	media-libs/coin
+	virtual/opengl
+	designer? ( dev-qt/qttools:6[designer] )
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+	virtual/pkgconfig
+	doc? (
+		app-text/doxygen[dot]
+		qch? ( dev-qt/qttools:6[assistant] )
+	)
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.2.1-cmake.patch
+	"${FILESDIR}"/${PN}-1.2.2-find-qhelpgenerator.patch # bug 933432
+)
+
+DOCS=( AUTHORS NEWS README.md )
+
+src_prepare() {
+	cmake_src_prepare
+	sed -e 's|/lib$|/lib@LIB_SUFFIX@|' \
+		-i Quarter.pc.cmake.in || die
+}
+
+src_configure() {
+	use debug && append-cppflags -DQUARTER_DEBUG=1
+	local mycmakeargs=(
+		-DCMAKE_INSTALL_DOCDIR="${EPREFIX}/usr/share/doc/${PF}"
+		-DQUARTER_BUILD_SHARED_LIBS=ON
+		-DQUARTER_BUILD_PLUGIN=$(usex designer)
+		-DQUARTER_BUILD_EXAMPLES=OFF
+		-DQUARTER_BUILD_DOCUMENTATION=$(usex doc)
+		-DQUARTER_BUILD_AWESOME_DOCUMENTATION=$(usex doc)
+		-DQUARTER_BUILD_DOC_MAN=$(usex doc)
+		-DQUARTER_BUILD_INTERNAL_DOCUMENTATION=OFF
+		-DQUARTER_BUILD_DOC_QTHELP=$(usex qch)
+		-DQUARTER_BUILD_DOC_CHM=OFF
+		-DQUARTER_USE_QT6=ON
+	)
+	use doc && mycmakeargs+=( -DCMAKE_DISABLE_FIND_PACKAGE_Git=ON )
+	cmake_src_configure
+}