libinput: Forward frame events to clients

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=77353

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>

desktop-shell/shell.c

@@ -1402,6 +1402,11 @@ touch_move_grab_motion(struct weston_touch_grab *grab, uint32_t time,
 	weston_compositor_schedule_repaint(es->compositor);
 }
 
+static void
+touch_move_grab_frame(struct weston_touch_grab *grab)
+{
+}
+
 static void
 touch_move_grab_cancel(struct weston_touch_grab *grab)
 {
@@ -1417,6 +1422,7 @@ static const struct weston_touch_grab_interface touch_move_grab_interface = {
 	touch_move_grab_down,
 	touch_move_grab_up,
 	touch_move_grab_motion,
+	touch_move_grab_frame,
 	touch_move_grab_cancel,
 };
 

src/compositor.h

@@ -278,6 +278,7 @@ struct weston_touch_grab_interface {
 			int touch_id,
 			wl_fixed_t sx,
 			wl_fixed_t sy);
+	void (*frame)(struct weston_touch_grab *grab);
 	void (*cancel)(struct weston_touch_grab *grab);
 };
 
@@ -1008,6 +1009,8 @@ notify_keyboard_focus_out(struct weston_seat *seat);
 void
 notify_touch(struct weston_seat *seat, uint32_t time, int touch_id,
 	     wl_fixed_t x, wl_fixed_t y, int touch_type);
+void
+notify_touch_frame(struct weston_seat *seat);
 
 void
 weston_layer_init(struct weston_layer *layer, struct wl_list *below);

src/data-device.c

@@ -496,6 +496,11 @@ drag_grab_touch_motion(struct weston_touch_grab *grab, uint32_t time,
 	}
 }
 
+static void
+drag_grab_touch_frame(struct weston_touch_grab *grab)
+{
+}
+
 static void
 drag_grab_touch_cancel(struct weston_touch_grab *grab)
 {
@@ -511,6 +516,7 @@ static const struct weston_touch_grab_interface touch_drag_grab_interface = {
 	drag_grab_touch_down,
 	drag_grab_touch_up,
 	drag_grab_touch_motion,
+	drag_grab_touch_frame,
 	drag_grab_touch_cancel
 };
 

src/input.c

@@ -286,6 +286,15 @@ default_grab_touch_motion(struct weston_touch_grab *grab, uint32_t time,
 	}
 }
 
+static void
+default_grab_touch_frame(struct weston_touch_grab *grab)
+{
+	struct wl_resource *resource;
+
+	wl_resource_for_each(resource, &grab->touch->focus_resource_list)
+		wl_touch_send_frame(resource);
+}
+
 static void
 default_grab_touch_cancel(struct weston_touch_grab *grab)
 {
@@ -295,6 +304,7 @@ static const struct weston_touch_grab_interface default_touch_grab_interface = {
 	default_grab_touch_down,
 	default_grab_touch_up,
 	default_grab_touch_motion,
+	default_grab_touch_frame,
 	default_grab_touch_cancel,
 };
 
@@ -1512,6 +1522,15 @@ notify_touch(struct weston_seat *seat, uint32_t time, int touch_id,
 	}
 }
 
+WL_EXPORT void
+notify_touch_frame(struct weston_seat *seat)
+{
+	struct weston_touch *touch = seat->touch;
+	struct weston_touch_grab *grab = touch->grab;
+
+	grab->interface->frame(grab);
+}
+
 static void
 pointer_cursor_surface_configure(struct weston_surface *es,
 				 int32_t dx, int32_t dy)

src/libinput-device.c

@@ -187,6 +187,17 @@ handle_touch_up(struct libinput_device *libinput_device,
 	notify_touch(device->seat, time, slot, 0, 0, WL_TOUCH_UP);
 }
 
+static void
+handle_touch_frame(struct libinput_device *libinput_device,
+		   struct libinput_event_touch *touch_event)
+{
+	struct evdev_device *device =
+		libinput_device_get_user_data(libinput_device);
+	struct weston_seat *seat = device->seat;
+
+	notify_touch_frame(seat);
+}
+
 int
 evdev_device_process_event(struct libinput_event *event)
 {
@@ -228,6 +239,10 @@ evdev_device_process_event(struct libinput_event *event)
 		handle_touch_up(libinput_device,
 				libinput_event_get_touch_event(event));
 		break;
+	case LIBINPUT_EVENT_TOUCH_FRAME:
+		handle_touch_frame(libinput_device,
+				   libinput_event_get_touch_event(event));
+		break;
 	default:
 		handled = 0;
 		weston_log("unknown libinput event %d\n",