GTK: Fix wrong direction of zoom when "smooth scrolling" with mouse w…

…heel ... on Linux/GTK The bug was introduced here 31d0c27 solvespace#1464 solvespace#1470 Fixes solvespace#1488
atomicdog · Oct 7, 2024 · c619fa9 · c619fa9
1 parent 5528da7
commit c619fa9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/platform/guigtk.cpp b/src/platform/guigtk.cpp
@@ -578,7 +578,7 @@ class GtkGLWidget : public Gtk::GLArea {
 //        gdk_scroll_event_get_direction((GdkEvent*)gdk_event, &dir);
 
         if(gdk_event_get_scroll_deltas((GdkEvent*)gdk_event, &dx, &dy)) {
-            delta = dy;
+            delta = -dy;
         } else if(gdk_event_get_scroll_direction((GdkEvent*)gdk_event, &dir)) {
             if(dir == GDK_SCROLL_UP) {
                 delta = 1;