Commit: patch 9.1.0086: Problem when scrolling using slow touchpads scroll event

[Christian Brabandt]

patch 9.1.0086: Problem when scrolling using slow touchpads scroll event

Commit: https://github.com/vim/vim/commit/725c7c31a4c7603e688511d769b0addaab442d07
Author: lilydjwg <lily...@gmail.com>
Date: Fri Feb 9 19:24:23 2024 +0100

patch 9.1.0086: Problem when scrolling using slow touchpads scroll event

Problem: Problem when scrolling using slow touchpads scroll event
Solution: better ways to determine if a smooth scroll has ended (when
available) (lilydjwg)

related: #13997

Signed-off-by: lilydjwg <lily...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index a89a77429..518edaf04 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -2049,7 +2049,7 @@ button_press_event(GtkWidget *widget,
}

/*
- * GTK+ 2 abstracts scrolling via the GdkEventScroll.
+ * GTK+ abstracts scrolling via the GdkEventScroll.
*/
static gboolean
scroll_event(GtkWidget *widget,
@@ -2060,7 +2060,9 @@ scroll_event(GtkWidget *widget,
int_u vim_modifiers;
#if GTK_CHECK_VERSION(3,4,0)
static double acc_x, acc_y;
+#if !GTK_CHECK_VERSION(3,22,0)
static guint32 last_smooth_event_time;
+#endif
#define DT_X11 1
#define DT_WAYLAND 2
static display_type;
@@ -2087,12 +2089,25 @@ scroll_event(GtkWidget *widget,
break;
#if GTK_CHECK_VERSION(3,4,0)
case GDK_SCROLL_SMOOTH:
+ if (event->is_stop)
+ {
+ acc_x = acc_y = 0;
+ // this event tells us to stop, without an actual moving
+ return FALSE;
+ }
+#if GTK_CHECK_VERSION(3,22,0)
+ if (gdk_device_get_axes(event->device) & GDK_AXIS_FLAG_WHEEL)
+ // this is from a wheel (as oppose to a touchpad / trackpoint)
+#else
if (event->time - last_smooth_event_time > 50)
// reset our accumulations after 50ms of silence
+#endif
acc_x = acc_y = 0;
acc_x += event->delta_x;
acc_y += event->delta_y;
+#if !GTK_CHECK_VERSION(3,22,0)
last_smooth_event_time = event->time;
+#endif
break;
#endif
default: // This shouldn't happen
diff --git a/src/version.c b/src/version.c
index 33325a664..8002c95b6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 86,
/**/
85,
/**/