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| author | Cosimo Cecchi <cosimoc@gnome.org> | 2012-03-13 10:25:34 -0400 |
|---|---|---|
| committer | Cosimo Cecchi <cosimoc@gnome.org> | 2012-03-13 10:26:51 -0400 |
| commit | f7b54cdba55a0856b201e62818059ac5007fac35 (patch) | |
| tree | 7bdf9498806851f94f27c7a01fd406f48f92e7dd | |
| parent | 45cb82857c9cef34952da4c0488780fd8b19a61b (diff) | |
| download | nautilus-f7b54cdba55a0856b201e62818059ac5007fac35.tar.gz | |
view: threshold the delta information when scroll-zooming
We don't want to zoom for every single event, since in case the device
supports smooth scrolling, we will get a lot of small events.
Pointed out by Stefano Facchini.
| -rw-r--r-- | src/nautilus-view.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/nautilus-view.c b/src/nautilus-view.c index f99a0f1bd..f58f97b13 100644 --- a/src/nautilus-view.c +++ b/src/nautilus-view.c @@ -9483,16 +9483,21 @@ nautilus_view_handle_scroll_event (NautilusView *directory_view, gdk_event_get_scroll_deltas ((const GdkEvent *) event, &delta_x, &delta_y); - if (delta_y > 0) { + /* threshold the delta, so that when events come from a device supporting + * smooth scrolling (e.g. a touchpad), we only change zoom level if the event + * is relevant enough. + */ + if (delta_y > 0.25) { /* emulate scroll down */ nautilus_view_bump_zoom_level (directory_view, -1); return TRUE; - } else if (delta_y < 0) { + } else if (delta_y < - 0.25) { /* emulate scroll up */ nautilus_view_bump_zoom_level (directory_view, 1); return TRUE; } else { - break; + /* eat event */ + return TRUE; } case GDK_SCROLL_LEFT: |