Drop check for wlr_seat_touch_notify_cancel

It's part of wlroots 0.16

Part-of: <https://gitlab.gnome.org/World/Phosh/phoc/-/merge_requests/410>

meson.build

@@ -67,16 +67,9 @@ if not embed_wlroots.disabled() and wlroots_proj.found()
         wlroots = wlroots_proj.get_variable('wlroots')
         wlroots_conf = wlroots_proj.get_variable('conf_data')
         wlroots_has_xwayland = wlroots_conf.get('WLR_HAS_XWAYLAND') == 1
-        have_wlr_seat_touch_notify_cancel = true
 else
         wlroots = dependency('wlroots', version: '>= 0.16.0')
         wlroots_has_xwayland = cc.get_define('WLR_HAS_XWAYLAND', prefix: '#include <wlr/config.h>', dependencies: wlroots) == '1'
-        have_wlr_seat_touch_notify_cancel = false
-        if cc.has_function('wlr_seat_touch_notify_cancel',
-                           args: '-DWLR_USE_UNSTABLE',
-                           dependencies: wlroots)
-          have_wlr_seat_touch_notify_cancel = true
-        endif
 endif
 
 if get_option('xwayland').enabled() and not wlroots_has_xwayland
@@ -143,9 +136,6 @@ config_h.set_quoted('PHOC_APP_ID', 'sm.puri.Phoc')
 config_h.set_quoted('PHOC_VERSION', meson.project_version())
 config_h.set('PHOC_XWAYLAND', have_xwayland,
 	     description: 'Whether xwayland is enabled')
-config_h.set('PHOC_HAVE_WLR_SEAT_TOUCH_NOTIFY_CANCEL', have_wlr_seat_touch_notify_cancel,
-	     description: '''Whether we have needed functions for toch gesture cancel
-   Can be dropped with wlroots 0.16.0''')
 
 phoc_config_h = configure_file(
   output: 'phoc-config.h',

phoc-config.h.in

@@ -9,7 +9,3 @@
 
 /* Whether xwayland is enabled */
 #mesondefine PHOC_XWAYLAND
-
-/* Whether we have needed functions for toch gesture cancel */
-/* Can be dropped with wlroots 0.16                         */
-#mesondefine PHOC_HAVE_WLR_SEAT_TOUCH_NOTIFY_CANCEL

src/cursor.c

@@ -552,7 +552,6 @@ on_drag_update (PhocGesture *gesture, double off_x, double off_y, PhocCursor *se
   switch (state) {
   case PHOC_DRAGGABLE_SURFACE_STATE_DRAGGING:
     if (phoc_seat_has_touch (self->seat)) {
-#ifdef PHOC_HAVE_WLR_SEAT_TOUCH_NOTIFY_CANCEL
       PhocLayerSurface *layer_surface =
         phoc_draggable_layer_surface_get_layer_surface (priv->drag_surface);
       GList *seqs = phoc_gesture_get_sequences (gesture);
@@ -566,9 +565,6 @@ on_drag_update (PhocGesture *gesture, double off_x, double off_y, PhocCursor *se
                phoc_layer_surface_get_namespace (layer_surface));
       wlr_seat_touch_notify_cancel (self->seat->seat,
                                     layer_surface->layer_surface->surface);
-#else
-      g_warning_once ("wlroots lacks wlr_seat_touch_send_wl_cancel support, can't cancel gesture");
-#endif /* PHOC_HAVE_WLR_SEAT_TOUCH_NOTIFY_CANCEL */
     }
     break;
   case PHOC_DRAGGABLE_SURFACE_STATE_REJECTED: