x11-wm/mutter: Apply important fixes from upstream

One fixes drag&drop with QT apps and the other makes RDP desktop sharing
usable again.

Signed-off-by: Pacho Ramos <pacho@gentoo.org>

3 files changed, 448 insertions, 0 deletions

diff --git a/x11-wm/mutter/files/mutter-44.1-frame-updates.patch b/x11-wm/mutter/files/mutter-44.1-frame-updates.patch
new file mode 100644
index 000000000000..bc6f5411204b
--- /dev/null
+++ b/x11-wm/mutter/files/mutter-44.1-frame-updates.patch
@@ -0,0 +1,158 @@
+From 82bd40dcbcc3601da755678778f033bd9a30286d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
+Date: Thu, 4 May 2023 12:31:41 +0200
+Subject: [PATCH] screen-cast/src: Never dequeue pw_buffer's we refuse to
+ record to
+
+The DMA buffer paths vs MemFd paths differ slightly in when content is
+recorded. This was in some places done by trying to record but bail if
+the dequeued buffer had the wrong type. This is problematic for two
+reasons: we'd update the timestamp even if we refused to record, making
+the follow-up attempt fail, and we'd dequeue and queue buffers that
+didn't get any content, meaning the receiving end would see empty
+buffers potentially with only cursor updates.
+
+Fix this by keeping track if a stream is DMA buffer able or not, and
+don't attempt to record at all in the places we would previously require
+DMA buffers. This avoids both issues: we don't dequeue/queue pw_buffers
+that we refuse to record to, and we won't update the recorded timestamp
+when we didn't intend to record to begin with.
+
+Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2783
+Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2987>
+---
+ .../meta-screen-cast-monitor-stream-src.c     | 25 ++++++++++++-------
+ src/backends/meta-screen-cast-stream-src.c    | 22 ++++++++++------
+ src/backends/meta-screen-cast-stream-src.h    |  3 ++-
+ 3 files changed, 32 insertions(+), 18 deletions(-)
+
+diff --git a/src/backends/meta-screen-cast-monitor-stream-src.c b/src/backends/meta-screen-cast-monitor-stream-src.c
+index efb458067e..073a4d101f 100644
+--- a/src/backends/meta-screen-cast-monitor-stream-src.c
++++ b/src/backends/meta-screen-cast-monitor-stream-src.c
+@@ -158,8 +158,8 @@ stage_painted (MetaStage           *stage,
+   MetaScreenCastMonitorStreamSrc *monitor_src =
+     META_SCREEN_CAST_MONITOR_STREAM_SRC (user_data);
+   MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
+-  MetaScreenCastRecordResult record_result;
+-  MetaScreenCastRecordFlag flags;
++  MetaScreenCastRecordResult record_result =
++    META_SCREEN_CAST_RECORD_RESULT_RECORDED_NOTHING;
+   int64_t presentation_time_us;
+ 
+   if (monitor_src->maybe_record_idle_id)
+@@ -168,12 +168,16 @@ stage_painted (MetaStage           *stage,
+   if (!clutter_frame_get_target_presentation_time (frame, &presentation_time_us))
+     presentation_time_us = g_get_monotonic_time ();
+ 
+-  flags = META_SCREEN_CAST_RECORD_FLAG_DMABUF_ONLY;
+-  record_result =
+-    meta_screen_cast_stream_src_maybe_record_frame_with_timestamp (src,
+-                                                                   flags,
+-                                                                   NULL,
+-                                                                   presentation_time_us);
++  if (meta_screen_cast_stream_src_uses_dma_bufs (src))
++    {
++      MetaScreenCastRecordFlag flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
++
++      record_result =
++        meta_screen_cast_stream_src_maybe_record_frame_with_timestamp (src,
++                                                                       flags,
++                                                                       NULL,
++                                                                       presentation_time_us);
++    }
+ 
+   if (!(record_result & META_SCREEN_CAST_RECORD_RESULT_RECORDED_FRAME))
+     {
+@@ -200,13 +204,16 @@ before_stage_painted (MetaStage           *stage,
+   if (monitor_src->maybe_record_idle_id)
+     return;
+ 
++  if (!meta_screen_cast_stream_src_uses_dma_bufs (src))
++    return;
++
+   if (!clutter_stage_view_peek_scanout (view))
+     return;
+ 
+   if (!clutter_frame_get_target_presentation_time (frame, &presentation_time_us))
+     presentation_time_us = g_get_monotonic_time ();
+ 
+-  flags = META_SCREEN_CAST_RECORD_FLAG_DMABUF_ONLY;
++  flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
+   meta_screen_cast_stream_src_maybe_record_frame_with_timestamp (src,
+                                                                  flags,
+                                                                  NULL,
+diff --git a/src/backends/meta-screen-cast-stream-src.c b/src/backends/meta-screen-cast-stream-src.c
+index 91a8afab47..94fc222e43 100644
+--- a/src/backends/meta-screen-cast-stream-src.c
++++ b/src/backends/meta-screen-cast-stream-src.c
+@@ -107,6 +107,7 @@ typedef struct _MetaScreenCastStreamSrcPrivate
+   int64_t last_frame_timestamp_us;
+   guint follow_up_frame_source_id;
+ 
++  gboolean uses_dma_bufs;
+   GHashTable *dmabuf_handles;
+ 
+   cairo_region_t *redraw_clip;
+@@ -513,15 +514,9 @@ do_record_frame (MetaScreenCastStreamSrc  *src,
+ {
+   MetaScreenCastStreamSrcPrivate *priv =
+     meta_screen_cast_stream_src_get_instance_private (src);
+-  gboolean dmabuf_only;
+ 
+-  dmabuf_only = flags & META_SCREEN_CAST_RECORD_FLAG_DMABUF_ONLY;
+-  if (dmabuf_only && spa_buffer->datas[0].type != SPA_DATA_DmaBuf)
+-    return FALSE;
+-
+-  if (!dmabuf_only &&
+-      (spa_buffer->datas[0].data ||
+-       spa_buffer->datas[0].type == SPA_DATA_MemFd))
++  if (spa_buffer->datas[0].data ||
++      spa_buffer->datas[0].type == SPA_DATA_MemFd)
+     {
+       int width = priv->video_format.size.width;
+       int height = priv->video_format.size.height;
+@@ -1058,6 +1053,8 @@ on_stream_add_buffer (void             *data,
+       dmabuf_handle = NULL;
+     }
+ 
++  priv->uses_dma_bufs = !!dmabuf_handle;
++
+   if (dmabuf_handle)
+     {
+       meta_topic (META_DEBUG_SCREEN_CAST,
+@@ -1595,3 +1592,12 @@ meta_screen_cast_stream_src_class_init (MetaScreenCastStreamSrcClass *klass)
+                                   NULL, NULL, NULL,
+                                   G_TYPE_NONE, 0);
+ }
++
++gboolean
++meta_screen_cast_stream_src_uses_dma_bufs (MetaScreenCastStreamSrc *src)
++{
++  MetaScreenCastStreamSrcPrivate *priv =
++    meta_screen_cast_stream_src_get_instance_private (src);
++
++  return priv->uses_dma_bufs;
++}
+diff --git a/src/backends/meta-screen-cast-stream-src.h b/src/backends/meta-screen-cast-stream-src.h
+index 63058f2c35..a15ca54f15 100644
+--- a/src/backends/meta-screen-cast-stream-src.h
++++ b/src/backends/meta-screen-cast-stream-src.h
+@@ -41,7 +41,6 @@ typedef enum _MetaScreenCastRecordFlag
+ {
+   META_SCREEN_CAST_RECORD_FLAG_NONE = 0,
+   META_SCREEN_CAST_RECORD_FLAG_CURSOR_ONLY = 1 << 0,
+-  META_SCREEN_CAST_RECORD_FLAG_DMABUF_ONLY = 1 << 1,
+ } MetaScreenCastRecordFlag;
+ 
+ typedef enum _MetaScreenCastRecordResult
+@@ -132,4 +131,6 @@ void meta_screen_cast_stream_src_set_cursor_sprite_metadata (MetaScreenCastStrea
+                                                              float                    scale,
+                                                              MetaMonitorTransform     transform);
+ 
++gboolean meta_screen_cast_stream_src_uses_dma_bufs (MetaScreenCastStreamSrc *src);
++
+ #endif /* META_SCREEN_CAST_STREAM_SRC_H */
+-- 
+GitLab
+
diff --git a/x11-wm/mutter/files/mutter-44.1-xdnd-frame-window.patch b/x11-wm/mutter/files/mutter-44.1-xdnd-frame-window.patch
new file mode 100644
index 000000000000..4067e31ef277
--- /dev/null
+++ b/x11-wm/mutter/files/mutter-44.1-xdnd-frame-window.patch
@@ -0,0 +1,50 @@
+From f21cc690527010918d10638cfc7747df3eede496 Mon Sep 17 00:00:00 2001
+From: Sebastian Keller <skeller@gnome.org>
+Date: Fri, 28 Apr 2023 12:20:11 +0200
+Subject: [PATCH] frames: Disable XDND support on the frame window
+
+All X11 surfaces created by gtk4 claim to support XDND via the XdndAware
+property. This was leading some clients, e.g. Qt, to consider the frame
+window as drop target instead of the client window.
+
+Avoid this issue by removing the XdndAware property again after gtk has
+created the surface.
+
+Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2715
+Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2978>
+
+
+(cherry picked from commit d643eb5c6fe50e7f1afffda0e8747a87f668a799)
+---
+ src/frames/meta-frame.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/src/frames/meta-frame.c b/src/frames/meta-frame.c
+index be685c51fc..345751ad14 100644
+--- a/src/frames/meta-frame.c
++++ b/src/frames/meta-frame.c
+@@ -504,6 +504,7 @@ frame_sync_wm_state (MetaFrame *frame,
+ GtkWidget *
+ meta_frame_new (Window window)
+ {
++  GdkDisplay *display;
+   GtkWidget *frame, *header, *content;
+   GdkSurface *surface;
+   int frame_height = 0;
+@@ -549,6 +550,13 @@ meta_frame_new (Window window)
+   frame_sync_motif_wm_hints (GTK_WINDOW (frame), window);
+   frame_sync_wm_normal_hints (GTK_WINDOW (frame), window);
+ 
++  /* Disable XDND support on the frame window, because it can cause some clients
++   * to try use it instead of the client window as drop target */
++  display = gtk_widget_get_display (GTK_WIDGET (frame));
++  XDeleteProperty (gdk_x11_display_get_xdisplay (display),
++                   gdk_x11_surface_get_xid (surface),
++                   gdk_x11_get_xatom_by_name_for_display (display, "XdndAware"));
++
+   return frame;
+ }
+ 
+-- 
+GitLab
+
diff --git a/x11-wm/mutter/mutter-44.1-r1.ebuild b/x11-wm/mutter/mutter-44.1-r1.ebuild
new file mode 100644
index 000000000000..8f0ee64bf0e6
--- /dev/null
+++ b/x11-wm/mutter/mutter-44.1-r1.ebuild
@@ -0,0 +1,240 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+PYTHON_COMPAT=( python3_{9..11} )
+inherit gnome.org gnome2-utils meson python-any-r1 udev xdg
+
+DESCRIPTION="GNOME compositing window manager based on Clutter"
+HOMEPAGE="https://gitlab.gnome.org/GNOME/mutter/"
+
+if [[ ${PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://gitlab.gnome.org/GNOME/mutter.git"
+	SRC_URI=""
+else
+	KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~riscv ~x86"
+fi
+
+LICENSE="GPL-2+"
+SLOT="0/$(($(ver_cut 1) - 32))" # 0/libmutter_api_version - ONLY gnome-shell (or anything using mutter-clutter-<api_version>.pc) should use the subslot
+
+IUSE="debug elogind gnome gtk-doc input_devices_wacom +introspection screencast sysprof systemd test udev wayland video_cards_nvidia"
+# native backend requires gles3 for hybrid graphics blitting support, udev and a logind provider
+REQUIRED_USE="
+	gtk-doc? ( introspection )
+	wayland? ( ^^ ( elogind systemd ) udev )
+	test? ( wayland )"
+RESTRICT="!test? ( test )"
+
+# gnome-settings-daemon is build checked, but used at runtime only for org.gnome.settings-daemon.peripherals.keyboard gschema
+# xorg-server is needed at build and runtime with USE=wayland for Xwayland
+# v3.32.2 has many excessive or unused *_req variables declared, thus currently the dep order ignores those and goes via dependency() call order
+DEPEND="
+	>=media-libs/graphene-1.10.2[introspection?]
+	x11-libs/gdk-pixbuf:2
+	>=x11-libs/pango-1.46[introspection?]
+	>=x11-libs/cairo-1.14[X]
+	>=dev-libs/fribidi-1.0.0
+	>=gnome-base/gsettings-desktop-schemas-42.0[introspection?]
+	>=dev-libs/glib-2.75.1:2
+	gnome-base/gnome-settings-daemon
+	>=dev-libs/json-glib-0.12.0[introspection?]
+	>=x11-libs/libxkbcommon-0.4.3
+	x11-libs/libICE
+	>=app-accessibility/at-spi2-core-2.46:2[introspection?]
+	sys-apps/dbus
+	>=x11-misc/colord-1.4.5:=
+	>=media-libs/lcms-2.6:2
+	>=media-libs/harfbuzz-2.6.0:=
+
+	gnome? ( gnome-base/gnome-desktop:4= )
+
+	>=media-libs/libcanberra-0.26
+
+	media-libs/libglvnd[X]
+
+	wayland? (
+		>=dev-libs/wayland-protocols-1.31
+		>=dev-libs/wayland-1.21.0
+
+		x11-libs/libdrm
+		media-libs/mesa[gbm(+)]
+		>=dev-libs/libinput-1.18.0:=
+
+		elogind? ( sys-auth/elogind )
+		x11-base/xwayland
+		video_cards_nvidia? ( gui-libs/egl-wayland )
+	)
+	udev? (
+		>=virtual/libudev-232-r1:=
+		>=dev-libs/libgudev-232
+	)
+	systemd? ( sys-apps/systemd )
+	x11-libs/libSM
+	input_devices_wacom? ( >=dev-libs/libwacom-0.13:= )
+	>=x11-libs/startup-notification-0.7
+	screencast? ( >=media-video/pipewire-0.3.21:= )
+	introspection? ( >=dev-libs/gobject-introspection-1.54:= )
+	test? ( >=x11-libs/gtk+-3.19.8:3[X,introspection?] )
+	sysprof? ( >=dev-util/sysprof-capture-3.40.1:4 >=dev-util/sysprof-3.46.0 )
+"
+# for now upstream has "have_x11 = true" in the meson.build, but sooner or later upstream is going to make X optional.
+#	X? (
+DEPEND+="
+		>=gui-libs/gtk-4.0.0:4[X,introspection?]
+		>=x11-libs/libX11-1.7.0
+		>=x11-libs/libXcomposite-0.4
+		x11-libs/libXcursor
+		x11-libs/libXdamage
+		x11-libs/libXext
+		>=x11-libs/libXfixes-3
+		>=x11-libs/libXi-1.7.4
+		x11-libs/libXtst
+		x11-libs/libxkbfile
+		x11-misc/xkeyboard-config
+		>=x11-libs/libxkbcommon-0.4.3[X]
+		x11-libs/libXrender
+		>=x11-libs/libXrandr-1.5.0
+		x11-libs/libxcb:=
+		x11-libs/libXinerama
+		x11-libs/libXau
+"
+#	)"
+
+RDEPEND="${DEPEND}
+	gnome-extra/zenity
+
+	!<gui-libs/gtk-4.6.4:4
+"
+DEPEND="${DEPEND}
+	x11-base/xorg-proto
+	sysprof? ( >=dev-util/sysprof-common-3.38.0 )
+"
+BDEPEND="
+	dev-util/wayland-scanner
+	dev-util/gdbus-codegen
+	dev-util/glib-utils
+	>=sys-devel/gettext-0.19.8
+	virtual/pkgconfig
+	gtk-doc? ( >=dev-util/gi-docgen-2021.1 )
+	test? (
+		${PYTHON_DEPS}
+		$(python_gen_any_dep '
+			>=dev-python/python-dbusmock-0.28[${PYTHON_USEDEP}]
+		')
+		app-text/docbook-xml-dtd:4.5
+		x11-misc/xvfb-run
+	)
+	wayland? (
+		>=sys-kernel/linux-headers-4.4
+		x11-libs/libxcvt
+	)
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-43.0-Disable-anonymous-file-test.patch
+
+	# Fixes from 'master'
+	# Fix drag&drop in QT apps
+	"${FILESDIR}"/${P}-xdnd-frame-window.patch
+	# Fix frames dropping on screencast
+	"${FILESDIR}"/${P}-frame-updates.patch
+)
+
+python_check_deps() {
+	if use test; then
+		python_has_version ">=dev-python/python-dbusmock-0.28[${PYTHON_USEDEP}]"
+	fi
+}
+
+src_prepare() {
+	default
+
+	sed -i -e "s:#!/usr/bin/bash:#!$(command -v bash):" src/tests/x11-test.sh || die
+}
+
+src_configure() {
+	local emesonargs=(
+		# Mutter X11 renderer only supports gles2 and GLX, thus do NOT pass
+		#
+		#   -Dopengl_libname=libOpenGL.so.0
+		#
+		# while we build the x11 renderer, as we currently enable gles2 only
+		# with USE=wayland and x11 renderer wouldn't find the needed GLX symbols
+		# in a configuration where wayland is disabled, as libOpenGL doesn't
+		# include them.
+		#
+		# See
+		# - https://bugs.gentoo.org/835786
+		# - https://forums.gentoo.org/viewtopic-p-8695669.html
+
+		--buildtype $(usex debug debug plain)
+		-Dopengl=true
+		$(meson_use wayland gles2)
+		#gles2_libname
+		-Degl=true
+		-Dglx=true
+		$(meson_use wayland)
+		$(meson_use wayland xwayland)
+		$(meson_use systemd)
+		$(meson_use wayland native_backend)
+		$(meson_use screencast remote_desktop)
+		$(meson_use gnome libgnome_desktop)
+		$(meson_use udev)
+		-Dudev_dir=$(get_udevdir)
+		$(meson_use input_devices_wacom libwacom)
+		-Dsound_player=true
+		-Dpango_ft2=true
+		-Dstartup_notification=true
+		-Dsm=true
+		$(meson_use introspection)
+		$(meson_use gtk-doc docs)
+		$(meson_use test cogl_tests)
+		$(meson_use wayland core_tests) # core tests require wayland; overall -Dtests option is honored on top, so no extra conditional needed
+		-Dnative_tests=false
+		$(meson_use test clutter_tests)
+		$(meson_use test tests)
+		-Dkvm_tests=false
+		-Dtty_tests=false
+		$(meson_use sysprof profiler)
+		-Dinstalled_tests=false
+
+		#verbose # Let upstream choose default for verbose mode
+		#xwayland_path
+		# TODO: relies on default settings, but in Gentoo we might have some more packages we want to give Xgrab access (mostly virtual managers and remote desktops)
+		#xwayland_grab_default_access_rules
+	)
+
+	if use wayland && use video_cards_nvidia; then
+		emesonargs+=(
+			-Degl_device=true
+			-Dwayland_eglstream=true
+		)
+	else
+		emesonargs+=(
+			-Degl_device=false
+			-Dwayland_eglstream=false
+		)
+	fi
+
+	meson_src_configure
+}
+
+src_test() {
+	gnome2_environment_reset # Avoid dconf that looks at XDG_DATA_DIRS, which can sandbox fail if flatpak is installed
+	glib-compile-schemas "${BUILD_DIR}"/data
+	GSETTINGS_SCHEMA_DIR="${BUILD_DIR}"/data meson_src_test --setup=CI
+}
+
+pkg_postinst() {
+	use udev && udev_reload
+	xdg_pkg_postinst
+	gnome2_schemas_update
+}
+
+pkg_postrm() {
+	use udev && udev_reload
+	xdg_pkg_postrm
+	gnome2_schemas_update
+}