build: require libinput v1.19

This version has been published back in 2021.

backend/libinput/events.c

@@ -167,12 +167,8 @@ void handle_libinput_event(struct wlr_libinput_backend *backend,
 		handle_pointer_button(event, &dev->pointer);
 		break;
 	case LIBINPUT_EVENT_POINTER_AXIS:
-#if !HAVE_LIBINPUT_SCROLL_VALUE120
 		/* This event must be ignored in favour of the SCROLL_* events */
-		handle_pointer_axis(event, &dev->pointer);
-#endif
 		break;
-#if HAVE_LIBINPUT_SCROLL_VALUE120
 	case LIBINPUT_EVENT_POINTER_SCROLL_WHEEL:
 		handle_pointer_axis_value120(event, &dev->pointer,
 			WL_POINTER_AXIS_SOURCE_WHEEL);
@@ -185,7 +181,6 @@ void handle_libinput_event(struct wlr_libinput_backend *backend,
 		handle_pointer_axis_value120(event, &dev->pointer,
 			WL_POINTER_AXIS_SOURCE_CONTINUOUS);
 		break;
-#endif
 	case LIBINPUT_EVENT_TOUCH_DOWN:
 		handle_touch_down(event, &dev->touch);
 		break;
@@ -243,14 +238,12 @@ void handle_libinput_event(struct wlr_libinput_backend *backend,
 	case LIBINPUT_EVENT_GESTURE_PINCH_END:
 		handle_pointer_pinch_end(event, &dev->pointer);
 		break;
-#if HAVE_LIBINPUT_HOLD_GESTURES
 	case LIBINPUT_EVENT_GESTURE_HOLD_BEGIN:
 		handle_pointer_hold_begin(event, &dev->pointer);
 		break;
 	case LIBINPUT_EVENT_GESTURE_HOLD_END:
 		handle_pointer_hold_end(event, &dev->pointer);
 		break;
-#endif
 	default:
 		wlr_log(WLR_DEBUG, "Unknown libinput event %d", event_type);
 		break;

backend/libinput/meson.build

@@ -5,7 +5,7 @@ endif
 
 libinput = dependency(
 	'libinput',
-	version: '>=1.14.0',
+	version: '>=1.19.0',
 	required: 'libinput' in backends,
 	not_found_message: '\n'.join(msg),
 )
@@ -28,7 +28,4 @@ wlr_files += files(
 features += { 'libinput-backend': true }
 wlr_deps += libinput
 
-# libinput hold gestures and high resolution scroll are available since 1.19.0
-internal_config.set10('HAVE_LIBINPUT_HOLD_GESTURES', libinput.version().version_compare('>=1.19.0'))
-internal_config.set10('HAVE_LIBINPUT_SCROLL_VALUE120', libinput.version().version_compare('>=1.19.0'))
 internal_config.set10('HAVE_LIBINPUT_BUSTYPE', libinput.version().version_compare('>=1.26.0'))

backend/libinput/pointer.c

@@ -136,7 +136,6 @@ void handle_pointer_axis(struct libinput_event *event,
 	wl_signal_emit_mutable(&pointer->events.frame, pointer);
 }
 
-#if HAVE_LIBINPUT_SCROLL_VALUE120
 void handle_pointer_axis_value120(struct libinput_event *event,
 		struct wlr_pointer *pointer, enum wl_pointer_axis_source source) {
 	struct libinput_event_pointer *pevent =
@@ -173,7 +172,6 @@ void handle_pointer_axis_value120(struct libinput_event *event,
 	}
 	wl_signal_emit_mutable(&pointer->events.frame, pointer);
 }
-#endif
 
 void handle_pointer_swipe_begin(struct libinput_event *event,
 		struct wlr_pointer *pointer) {

include/backend/libinput.h

@@ -71,10 +71,8 @@ void handle_pointer_button(struct libinput_event *event,
 	struct wlr_pointer *pointer);
 void handle_pointer_axis(struct libinput_event *event,
 	struct wlr_pointer *pointer);
-#if HAVE_LIBINPUT_SCROLL_VALUE120
 void handle_pointer_axis_value120(struct libinput_event *event,
 	struct wlr_pointer *pointer, enum wl_pointer_axis_source source);
-#endif
 void handle_pointer_swipe_begin(struct libinput_event *event,
 	struct wlr_pointer *pointer);
 void handle_pointer_swipe_update(struct libinput_event *event,