temp/gtk+3.0: Fix Phosh boot splash (MR 4332)

For the splash screen to correctly dismiss itself without
hitting the timeout, we need a Gtk patch.

This is described in the Phosh release notes:
https://gitlab.gnome.org/World/Phosh/phosh/-/releases/v0.30.0#required-patches-that-arent-merged-upstream-yet

The patch isn't in upstream yet, but there is an open PR:
https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/5628

Mobian also carries the patch:
https://salsa.debian.org/Mobian-team/packages/gtk3/-/blob/mobian/debian/patches/purism/gdk-wayland-Track-last-touch-serial-on-seat.patch

So let's add the patch to pmOS as well. This fixes the Phosh splash
screens so they now disapear when the application is ready.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
[ci:skip-build]: already built successfully in CI

temp/gtk+3.0/APKBUILD

@@ -1,7 +1,7 @@
 # Forked from Alpine to apply Purism's patches for mobile usage
 pkgname=gtk+3.0
 pkgver=9999_git20230719
-pkgrel=0
+pkgrel=1
 # pureos/latest branch
 _commit="084b40f29656945e4c12428a8e9a4d5310c0e56d"
 pkgdesc="The GTK+ Toolkit (v3)"
@@ -59,6 +59,7 @@ checkdepends="
 	gdk-pixbuf
 	"
 source="https://source.puri.sm/Librem5/gtk/-/archive/$_commit/gtk-$_commit.tar.gz
+	gdk-wayland-Track-last-touch-serial-on-seat.patch
 	"
 
 builddir="$srcdir/gtk-$_commit"
@@ -134,4 +135,5 @@ doc() {
 
 sha512sums="
 8b9d14b4038a5e58b772bd2996adc6501fd025e5cf7973ef9fb8df2e1fea0bf7f9d4d71e3daa93418faf7759e35a390fe5d2a78a0a4c5829891955a615f41ea2  gtk-084b40f29656945e4c12428a8e9a4d5310c0e56d.tar.gz
+4b8ecb3f1adb833fe4006d690c31d0d930687abc28f6033e6304c235227b6e86f6abaa2c7d015677d3fdecc628fa7d7d3927b48cfceec9ad144827274a176762  gdk-wayland-Track-last-touch-serial-on-seat.patch
 "

temp/gtk+3.0/gdk-wayland-Track-last-touch-serial-on-seat.patch

@@ -0,0 +1,46 @@
+From: =?utf-8?q?Guido_G=C3=BCnther?= <agx@sigxcpu.org>
+Date: Fri, 10 Mar 2023 12:25:13 +0100
+Subject: gdk/wayland: Track last touch serial on seat
+
+Since the touch data is released on touch up
+_gdk_wayland_seat_get_last_implicit_grab_serial will return 0 serial
+most of the time for touch only devices. This breaks xdg activation as
+the compositor will reject tokens that have a 0 serial set via
+xdg_activation_token_v1_set_serial.
+
+Avoid that by tracking touch serials on the seat itself too.
+---
+ gdk/wayland/gdkdevice-wayland.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
+index 9dc86a3..9570e82 100644
+--- a/gdk/wayland/gdkdevice-wayland.c
++++ b/gdk/wayland/gdkdevice-wayland.c
+@@ -212,6 +212,7 @@ struct _GdkWaylandSeat
+   GdkKeymap *keymap;
+ 
+   GHashTable *touches;
++  guint32 last_touch_down_serial;
+   GList *tablets;
+   GList *tablet_tools;
+   GList *tablet_pads;
+@@ -2514,7 +2515,7 @@ touch_handle_down (void              *data,
+   touch = gdk_wayland_seat_add_touch (seat, id, wl_surface);
+   touch->x = wl_fixed_to_double (x);
+   touch->y = wl_fixed_to_double (y);
+-  touch->touch_down_serial = serial;
++  seat->last_touch_down_serial = touch->touch_down_serial = serial;
+ 
+   event = _create_touch_event (seat, touch, GDK_TOUCH_BEGIN, time);
+ 
+@@ -5398,6 +5399,9 @@ _gdk_wayland_seat_get_last_implicit_grab_serial (GdkSeat           *seat,
+         }
+     }
+ 
++  if (wayland_seat->last_touch_down_serial > serial)
++    serial = wayland_seat->last_touch_down_serial;
++
+   return serial;
+ }
+