diff options
| -rw-r--r-- | src/file-manager/fm-directory-view.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/file-manager/fm-directory-view.c b/src/file-manager/fm-directory-view.c index 80815dcd..135f4818 100644 --- a/src/file-manager/fm-directory-view.c +++ b/src/file-manager/fm-directory-view.c @@ -10827,6 +10827,11 @@ gboolean fm_directory_view_handle_scroll_event (FMDirectoryView *directory_view, GdkEventScroll *event) { +#if GTK_CHECK_VERSION (3, 0, 0) + static gdouble total_delta_y = 0; + gdouble delta_x, delta_y; +#endif + if (event->state & GDK_CONTROL_MASK) { switch (event->direction) { case GDK_SCROLL_UP: @@ -10839,6 +10844,29 @@ fm_directory_view_handle_scroll_event (FMDirectoryView *directory_view, fm_directory_view_bump_zoom_level (directory_view, -1); return TRUE; +#if GTK_CHECK_VERSION (3, 0, 0) + case GDK_SCROLL_SMOOTH: + gdk_event_get_scroll_deltas ((const GdkEvent *) event, + &delta_x, &delta_y); + + /* try to emulate a normal scrolling event by summing deltas */ + total_delta_y += delta_y; + + if (total_delta_y >= 1) { + total_delta_y = 0; + /* emulate scroll down */ + fm_directory_view_bump_zoom_level (directory_view, -1); + return TRUE; + } else if (total_delta_y <= - 1) { + total_delta_y = 0; + /* emulate scroll up */ + fm_directory_view_bump_zoom_level (directory_view, 1); + return TRUE; + } else { + /* eat event */ + return TRUE; + } +#endif case GDK_SCROLL_LEFT: case GDK_SCROLL_RIGHT: break; |