[libwnck] pager: Add scroll mode WNCK_PAGER_SCROLL_NONE

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 8f61229b171becbb5503ee831142a590ff8cc720
Author: Andre Miranda <andre andreldm com>
Date:   Thu Feb 18 22:05:48 2021 -0300

    pager: Add scroll mode WNCK_PAGER_SCROLL_NONE
    
    This allows disabling scrolling altogether.

 libwnck/pager.c | 2 ++
 libwnck/pager.h | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/libwnck/pager.c b/libwnck/pager.c
index c352733..32d146b 100644
--- a/libwnck/pager.c
+++ b/libwnck/pager.c
@@ -2042,6 +2042,8 @@ wnck_pager_scroll_event (GtkWidget      *widget,
     return FALSE;
   if (event->direction == GDK_SCROLL_SMOOTH)
     return FALSE;
+  if (pager->priv->scroll_mode == WNCK_PAGER_SCROLL_NONE)
+    return FALSE;
 
   absolute_direction = event->direction;
 
diff --git a/libwnck/pager.h b/libwnck/pager.h
index ed3988d..c67f2fa 100644
--- a/libwnck/pager.h
+++ b/libwnck/pager.h
@@ -88,6 +88,7 @@ typedef enum {
  * @WNCK_PAGER_SCROLL_1D: the #WnckPager will always cycle workspaces in a linear
  * manner, irrespective of how many rows are configured. (Hint: Better for mice)
  * Example cycling order with 2 rows and 4 workspaces: 1 2 3 4.
+ * @WNCK_PAGER_SCROLL_NONE: the #WnckPager will not cycle workspaces. Since 3.40.
  *
  * Mode defining in which order scrolling on a #WnckPager will cycle through workspaces.
  *
@@ -95,7 +96,8 @@ typedef enum {
  */
 typedef enum {
   WNCK_PAGER_SCROLL_2D,
-  WNCK_PAGER_SCROLL_1D
+  WNCK_PAGER_SCROLL_1D,
+  WNCK_PAGER_SCROLL_NONE
 } WnckPagerScrollMode;
 
 GType      wnck_pager_get_type           (void) G_GNUC_CONST;