From: Po Lu <luangruo@yahoo.com>
Date: Fri, 25 Feb 2022 06:20:14 +0000 (+0800)
Subject: Fix calculation of scroll deltas when coalescing wheel events
X-Git-Tag: emacs-29.0.90~2111
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=6fd6bea8c4be3e5025645907a52f56521192fef3;p=emacs.git

Fix calculation of scroll deltas when coalescing wheel events

* src/xterm.c (handle_one_xevent): Use accumulated values
instead of raw delta to determine scroll amounts.
---

diff --git a/src/xterm.c b/src/xterm.c
index 18d68e52f12..32f76d156a6 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -11471,9 +11471,9 @@ handle_one_xevent (struct x_display_info *dpyinfo,
 			    scroll_unit *= XFLOATINT (Vx_scroll_event_delta_factor);
 
 			  if (val->horizontal)
-			    total_x += delta * scroll_unit;
+			    total_x += val->emacs_value * scroll_unit;
 			  else
-			    total_y += delta * scroll_unit;
+			    total_y += val->emacs_value * scroll_unit;
 
 			  found_valuator = true;
 			  val->emacs_value = 0;