community/ibus: enable gtk4, split gtk modules into subpackages

Otherwise, this pulls GTK2 into basically every GNOME-related
installation. And provides overall a smaller base package

community/ibus/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Will Sinatra <wpsinatra@gmail.com>
 pkgname=ibus
 pkgver=1.5.29
-pkgrel=0
+pkgrel=1
 pkgdesc="Next Generation Input Bus for Linux"
 url="https://github.com/ibus/ibus/wiki"
 arch="all"
@@ -10,8 +10,8 @@ depends="
 	dconf hicolor-icon-theme iso-codes dbus py3-gobject3
 "
 makedepends="
-	bash dconf-dev gtk+2.0-dev gtk+3.0-dev libnotify-dev iso-codes-dev
-	gobject-introspection-dev vala qt5-qtbase
+	bash dconf-dev gtk+2.0-dev gtk+3.0-dev gtk4.0-dev
+	libnotify-dev iso-codes-dev gobject-introspection-dev vala qt5-qtbase
 	wayland-dev wayland-protocols
 	dbus-x11 unicode-character-database cldr-emoji-annotation
 	libdbusmenu-glib-dev libdbusmenu-gtk3-dev
@@ -22,6 +22,9 @@ subpackages="
 	$pkgname-lang
 	$pkgname-pyc
 	$pkgname-emoji
+	$pkgname-gtk2
+	$pkgname-gtk3
+	$pkgname-gtk4
 	$pkgname-bash-completion
 	"
 source="https://github.com/ibus/ibus/releases/download/$pkgver/ibus-$pkgver-rc2.tar.gz"
@@ -43,6 +46,7 @@ build() {
 		--sysconfdir=/etc \
 		--enable-dconf \
 		--enable-wayland \
+		--enable-gtk4 \
 		--disable-memconf \
 		--enable-ui \
 		--disable-gtk-doc \
@@ -68,6 +72,24 @@ emoji() {
 	mv "$pkgdir"/usr/share/ibus/dicts "$subpkgdir"/usr/share/ibus
 }
 
+gtk2() {
+	install_if="$pkgname=$pkgver-r$pkgrel gtk+2.0"
+
+	amove usr/lib/gtk-2.0/2.10.0
+}
+
+gtk3() {
+	install_if="$pkgname=$pkgver-r$pkgrel gtk+3.0"
+
+	amove usr/lib/gtk-3.0/3.0.0
+}
+
+gtk4() {
+	install_if="$pkgname=$pkgver-r$pkgrel gtk4.0"
+
+	amove usr/lib/gtk-4.0/4.0.0
+}
+
 pyc() {
 	default_pyc
 	amove usr/share/ibus/setup/__pycache__