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| author | Milan Crha <mcrha@redhat.com> | 2012-05-15 22:23:10 +0800 |
|---|---|---|
| committer | Milan Crha <mcrha@redhat.com> | 2012-05-15 22:24:29 +0800 |
| commit | 5e379370ae0653c229308e1d7af31a54739ccc7e (patch) | |
| tree | a9079e286e9e6a006d58ffa064d53d50091aab03 /modules/calendar/e-cal-shell-view-private.c | |
| parent | 0f7f848300bb2282cde20777c26168bdffe2d955 (diff) | |
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Bug #671585 - Add support for smooth scrolling devices
Diffstat (limited to 'modules/calendar/e-cal-shell-view-private.c')
| -rw-r--r-- | modules/calendar/e-cal-shell-view-private.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/modules/calendar/e-cal-shell-view-private.c b/modules/calendar/e-cal-shell-view-private.c index 4526570202..c256c9aebe 100644 --- a/modules/calendar/e-cal-shell-view-private.c +++ b/modules/calendar/e-cal-shell-view-private.c @@ -202,19 +202,40 @@ cal_shell_view_date_navigator_selection_changed_cb (ECalShellView *cal_shell_vie gnome_calendar_notify_dates_shown_changed (calendar); } -static void +static gboolean cal_shell_view_date_navigator_scroll_event_cb (ECalShellView *cal_shell_view, GdkEventScroll *event, ECalendar *date_navigator) { ECalendarItem *calitem; GDate start_date, end_date; + GdkScrollDirection direction; calitem = date_navigator->calitem; if (!e_calendar_item_get_selection (calitem, &start_date, &end_date)) - return; + return FALSE; + + direction = event->direction; + + #if GTK_CHECK_VERSION(3,3,18) + if (direction == GDK_SCROLL_SMOOTH) { + static gdouble total_delta_y = 0.0; + + total_delta_y += event->delta_y; - switch (event->direction) { + if (total_delta_y >= 1.0) { + total_delta_y = 0.0; + direction = GDK_SCROLL_DOWN; + } else if (total_delta_y <= -1.0) { + total_delta_y = 0.0; + direction = GDK_SCROLL_UP; + } else { + return FALSE; + } + } + #endif + + switch (direction) { case GDK_SCROLL_UP: g_date_subtract_months (&start_date, 1); g_date_subtract_months (&end_date, 1); @@ -226,7 +247,7 @@ cal_shell_view_date_navigator_scroll_event_cb (ECalShellView *cal_shell_view, break; default: - g_return_if_reached (); + g_return_val_if_reached (FALSE); } /* XXX Does ECalendarItem emit a signal for this? If so, maybe @@ -235,6 +256,8 @@ cal_shell_view_date_navigator_scroll_event_cb (ECalShellView *cal_shell_view, cal_shell_view_date_navigator_selection_changed_cb ( cal_shell_view, calitem); + + return TRUE; } static void |