From 8dcc03fb4a5db18fb52377ee578a2a673d691a1e Mon Sep 17 00:00:00 2001
From: Jason Gerecke <killertofu@gmail.com>
Date: Fri, 15 Jan 2016 17:29:37 -0800
Subject: [PATCH xserver 02/12] xwayland: Bind to wp_tablet_manager if
 available and get its seats

If we're notified about the existence of the wp_tablet_manager interface,
we bind to it so that we can make use of any tablets that are (or later
become) available. For each seat that exists or comes into existance at
a later point, obtain the associated tablet_seat.

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
(cherry picked from commit 7d48b758a601ce0252ebd21297a7c42263adfaaf)
---
 hw/xwayland/xwayland-input.c | 59 ++++++++++++++++++++++++++++++++++++++++++++
 hw/xwayland/xwayland.c       |  2 ++
 hw/xwayland/xwayland.h       |  4 +++
 3 files changed, 65 insertions(+)

diff --git a/hw/xwayland/xwayland-input.c b/hw/xwayland/xwayland-input.c
index 8fdc875ea..1d2be978e 100644
--- a/hw/xwayland/xwayland-input.c
+++ b/hw/xwayland/xwayland-input.c
@@ -63,6 +63,12 @@ static void
 xwl_seat_destroy_confined_pointer(struct xwl_seat *xwl_seat);
 
 static void
+init_tablet_manager_seat(struct xwl_screen *xwl_screen,
+                         struct xwl_seat *xwl_seat);
+static void
+release_tablet_manager_seat(struct xwl_seat *xwl_seat);
+
+static void
 xwl_pointer_control(DeviceIntPtr device, PtrCtrl *ctrl)
 {
     /* Nothing to do, dix handles all settings */
@@ -1147,6 +1153,9 @@ create_input_device(struct xwl_screen *xwl_screen, uint32_t id, uint32_t version
 
     xwl_seat->cursor = wl_compositor_create_surface(xwl_screen->compositor);
     wl_seat_add_listener(xwl_seat->seat, &seat_listener, xwl_seat);
+
+    init_tablet_manager_seat(xwl_screen, xwl_seat);
+
     wl_array_init(&xwl_seat->keys);
 
     xorg_list_init(&xwl_seat->touches);
@@ -1170,6 +1179,8 @@ xwl_seat_destroy(struct xwl_seat *xwl_seat)
         free (p);
     }
 
+    release_tablet_manager_seat(xwl_seat);
+
     wl_seat_destroy(xwl_seat->seat);
     wl_surface_destroy(xwl_seat->cursor);
     if (xwl_seat->cursor_frame_cb)
@@ -1178,6 +1189,52 @@ xwl_seat_destroy(struct xwl_seat *xwl_seat)
     free(xwl_seat);
 }
 
+
+static void
+init_tablet_manager_seat(struct xwl_screen *xwl_screen,
+                         struct xwl_seat *xwl_seat)
+{
+    if (!xwl_screen->tablet_manager)
+        return;
+
+    xwl_seat->tablet_seat =
+        zwp_tablet_manager_v2_get_tablet_seat(xwl_screen->tablet_manager,
+                                              xwl_seat->seat);
+}
+
+static void
+release_tablet_manager_seat(struct xwl_seat *xwl_seat)
+{
+    if (xwl_seat->tablet_seat) {
+        zwp_tablet_seat_v2_destroy(xwl_seat->tablet_seat);
+        xwl_seat->tablet_seat = NULL;
+    }
+}
+
+static void
+init_tablet_manager(struct xwl_screen *xwl_screen, uint32_t id, uint32_t version)
+{
+    struct xwl_seat *xwl_seat;
+
+    xwl_screen->tablet_manager = wl_registry_bind(xwl_screen->registry,
+                                                  id,
+                                                  &zwp_tablet_manager_v2_interface,
+                                                  min(version,1));
+
+    xorg_list_for_each_entry(xwl_seat, &xwl_screen->seat_list, link) {
+        init_tablet_manager_seat(xwl_screen, xwl_seat);
+    }
+}
+
+void
+xwl_screen_release_tablet_manager(struct xwl_screen *xwl_screen)
+{
+    if (xwl_screen->tablet_manager) {
+        zwp_tablet_manager_v2_destroy(xwl_screen->tablet_manager);
+        xwl_screen->tablet_manager = NULL;
+    }
+}
+
 static void
 init_relative_pointer_manager(struct xwl_screen *xwl_screen,
                               uint32_t id, uint32_t version)
@@ -1211,6 +1268,8 @@ input_handler(void *data, struct wl_registry *registry, uint32_t id,
         init_relative_pointer_manager(xwl_screen, id, version);
     } else if (strcmp(interface, "zwp_pointer_constraints_v1") == 0) {
         init_pointer_constraints(xwl_screen, id, version);
+    } else if (strcmp(interface, "zwp_tablet_manager_v2") == 0) {
+        init_tablet_manager(xwl_screen, id, version);
     }
 }
 
diff --git a/hw/xwayland/xwayland.c b/hw/xwayland/xwayland.c
index 939f3392c..fa7b81c7a 100644
--- a/hw/xwayland/xwayland.c
+++ b/hw/xwayland/xwayland.c
@@ -130,6 +130,8 @@ xwl_close_screen(ScreenPtr screen)
                                   &xwl_screen->seat_list, link)
         xwl_seat_destroy(xwl_seat);
 
+    xwl_screen_release_tablet_manager(xwl_screen);
+
     RemoveNotifyFd(xwl_screen->wayland_fd);
 
     wl_display_disconnect(xwl_screen->display);
diff --git a/hw/xwayland/xwayland.h b/hw/xwayland/xwayland.h
index 5e5624be0..2752d731c 100644
--- a/hw/xwayland/xwayland.h
+++ b/hw/xwayland/xwayland.h
@@ -76,6 +76,7 @@ struct xwl_screen {
     struct wl_registry *registry;
     struct wl_registry *input_registry;
     struct wl_compositor *compositor;
+    struct zwp_tablet_manager_v2 *tablet_manager;
     struct wl_shm *shm;
     struct wl_shell *shell;
     struct zwp_relative_pointer_manager_v1 *relative_pointer_manager;
@@ -137,6 +138,7 @@ struct xwl_seat {
     struct zwp_relative_pointer_v1 *wp_relative_pointer;
     struct wl_keyboard *wl_keyboard;
     struct wl_touch *wl_touch;
+    struct zwp_tablet_seat_v2 *tablet_seat;
     struct wl_array keys;
     struct xwl_window *focus_window;
     uint32_t id;
@@ -241,6 +243,8 @@ Bool xwl_screen_init_glamor(struct xwl_screen *xwl_screen,
                          uint32_t id, uint32_t version);
 struct wl_buffer *xwl_glamor_pixmap_get_wl_buffer(PixmapPtr pixmap);
 
+void xwl_screen_release_tablet_manager(struct xwl_screen *xwl_screen);
+
 #ifdef XV
 /* glamor Xv Adaptor */
 Bool xwl_glamor_xv_init(ScreenPtr pScreen);
-- 
2.13.5