[shotwell] Use different factors for smooth scrolling

[Jens Georg <jensgeorg src gnome org>]

commit 0d9739878857c6cf8feeeca1a7659dc851e0e2c9
Author: Jens Georg <mail jensge org>
Date:   Wed Sep 28 23:25:45 2022 +0200

    Use different factors for smooth scrolling
    
    This way the scrolling with touch pad is still smooth and zooming in the
    image is still somewhat manageable
    
    Fixes #4947

 src/Page.vala | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/src/Page.vala b/src/Page.vala
index 3915f21c..d21cfa33 100644
--- a/src/Page.vala
+++ b/src/Page.vala
@@ -989,16 +989,16 @@ public abstract class Page : Gtk.ScrolledWindow {
                     double dx, dy;
                     event.get_scroll_deltas(out dx, out dy);
 
-                    if (dy <= -1.0)
+                    if (dy < 0)
                         return on_mousewheel_up(event);
-                    else if (dy >= 1.0)
+                    else if (dy > 0)
                         return on_mousewheel_down(event);
-                    else if (dx <= -1.0)
+                    else if (dx < 0)
                         return on_mousewheel_left(event);
-                    else if (dx >= 1.0)
+                    else if (dx > 0)
                         return on_mousewheel_right(event);
                     else
-                        return true;
+                        return false;
                 }
            
             default: