[LyX/master] Make scrolling-by-selection smoother

[Jean-Marc Lasgouttes]

commit 1cc1f0ba27d1846ba244507529d4795ecfa29a39
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Sat Jul 20 19:47:32 2024 +0200

    Make scrolling-by-selection smoother
    
    This trivial patch makes scrolling-by-selection smoother by dividing
    the step size and the time between steps by 8 when generating
    synthetic events in work area.
    
    The scrolling speed is unchanged, but the result is visually better.
---
 src/frontends/qt/GuiWorkArea.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/frontends/qt/GuiWorkArea.cpp b/src/frontends/qt/GuiWorkArea.cpp
index 462fabda1e..4dfd365d79 100644
--- a/src/frontends/qt/GuiWorkArea.cpp
+++ b/src/frontends/qt/GuiWorkArea.cpp
@@ -943,6 +943,8 @@ void GuiWorkArea::generateSyntheticMouseEvent()
 				step = 80000 / (time * time);
 				time = 40;
 			}
+			step /= 8;
+			time /= 8;
 		}
 		d->synthetic_mouse_event_.timeout.setTimeout(time);
 		d->synthetic_mouse_event_.timeout.start();