Add libinput-1.14 support

This libinput version adds a new tablet tool type.

backend/libinput/tablet_tool.c

@@ -113,6 +113,10 @@ static enum wlr_tablet_tool_type wlr_type_from_libinput_type(
 		return WLR_TABLET_TOOL_TYPE_MOUSE;
 	case LIBINPUT_TABLET_TOOL_TYPE_LENS:
 		return WLR_TABLET_TOOL_TYPE_LENS;
+#if LIBINPUT_MINOR >= 14
+	case LIBINPUT_TABLET_TOOL_TYPE_TOTEM:
+		return WLR_TABLET_TOOL_TYPE_TOTEM;
+#endif
 	}
 
 	assert(false && "UNREACHABLE");

include/wlr/types/wlr_tablet_tool.h

@@ -19,14 +19,23 @@
  * tablet-unstable-v2 headers, so we can't include them
  */
 enum wlr_tablet_tool_type {
-	WLR_TABLET_TOOL_TYPE_PEN = 1,	/**< A generic pen */
-	WLR_TABLET_TOOL_TYPE_ERASER,	/**< Eraser */
-	WLR_TABLET_TOOL_TYPE_BRUSH,	/**< A paintbrush-like tool */
-	WLR_TABLET_TOOL_TYPE_PENCIL,	/**< Physical drawing tool, e.g.
-	                                     Wacom Inking Pen */
-	WLR_TABLET_TOOL_TYPE_AIRBRUSH,	/**< An airbrush-like tool */
-	WLR_TABLET_TOOL_TYPE_MOUSE,	/**< A mouse bound to the tablet */
-	WLR_TABLET_TOOL_TYPE_LENS,	/**< A mouse tool with a lens */
+	/** A generic pen */
+	WLR_TABLET_TOOL_TYPE_PEN = 1,
+	/** Eraser */
+	WLR_TABLET_TOOL_TYPE_ERASER,
+	/** A paintbrush-like tool */
+	WLR_TABLET_TOOL_TYPE_BRUSH,
+	/** Physical drawing tool, e.g. Wacom Inking Pen */
+	WLR_TABLET_TOOL_TYPE_PENCIL,
+	/** An airbrush-like tool */
+	WLR_TABLET_TOOL_TYPE_AIRBRUSH,
+	/** A mouse bound to the tablet */
+	WLR_TABLET_TOOL_TYPE_MOUSE,
+	/** A mouse tool with a lens */
+	WLR_TABLET_TOOL_TYPE_LENS,
+	/** A rotary device with positional and rotation data */
+	WLR_TABLET_TOOL_TYPE_TOTEM,
+
 };
 
 struct wlr_tablet_tool {

meson.build

@@ -128,6 +128,15 @@ if logind.found()
 	wlr_deps += logind
 endif
 
+if libinput.found()
+	ver = libinput.version().split('.')
+	add_project_arguments([
+		'-DLIBINPUT_MAJOR=' + ver[0],
+		'-DLIBINPUT_MINOR=' + ver[1],
+		'-DLIBINPUT_PATCH=' + ver[2],
+	], language: 'c')
+endif
+
 subdir('protocol')
 subdir('render')
 

types/tablet_v2/wlr_tablet_v2_tool.c

@@ -42,7 +42,7 @@ static void handle_tablet_tool_v2_set_cursor(struct wl_client *client,
 		.hotspot_x = hotspot_x,
 		.hotspot_y = hotspot_y,
 		.seat_client = tool->seat->seat_client,
-		};
+	};
 
 	wl_signal_emit(&tool->tool->events.set_cursor, &evt);
 }
@@ -73,6 +73,9 @@ static enum zwp_tablet_tool_v2_type tablet_type_from_wlr_type(
 		return ZWP_TABLET_TOOL_V2_TYPE_MOUSE;
 	case WLR_TABLET_TOOL_TYPE_LENS:
 		return ZWP_TABLET_TOOL_V2_TYPE_LENS;
+	default:
+		/* We skip these devices earlier on */
+		assert(false && "Unreachable");
 	}
 
 	assert(false && "Unreachable");
@@ -196,6 +199,21 @@ struct wlr_tablet_v2_tablet_tool *wlr_tablet_tool_create(
 		struct wlr_tablet_manager_v2 *manager,
 		struct wlr_seat *wlr_seat,
 		struct wlr_tablet_tool *wlr_tool) {
+	switch (wlr_tool->type) {
+	case WLR_TABLET_TOOL_TYPE_PEN:
+	case WLR_TABLET_TOOL_TYPE_ERASER:
+	case WLR_TABLET_TOOL_TYPE_BRUSH:
+	case WLR_TABLET_TOOL_TYPE_PENCIL:
+	case WLR_TABLET_TOOL_TYPE_AIRBRUSH:
+	case WLR_TABLET_TOOL_TYPE_MOUSE:
+	case WLR_TABLET_TOOL_TYPE_LENS:
+		/* supported */
+		break;
+	default:
+		/* Unsupported */
+		return NULL;
+	}
+
 	struct wlr_tablet_seat_v2 *seat = get_or_create_tablet_seat(manager, wlr_seat);
 	if (!seat) {
 		return NULL;