[evolution] Bug 578496 - Date selection popup arrow usage is flipped in RTL

[Milan Crha <mcrha src gnome org>]

commit 5b386c17bc10ad5a771212ae6b555cb2669277e0
Author: Milan Crha <mcrha redhat com>
Date:   Tue Aug 29 16:18:51 2017 +0200

    Bug 578496 - Date selection popup arrow usage is flipped in RTL

 src/e-util/e-calendar-item.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/src/e-util/e-calendar-item.c b/src/e-util/e-calendar-item.c
index ecbedbd..d70a0bb 100644
--- a/src/e-util/e-calendar-item.c
+++ b/src/e-util/e-calendar-item.c
@@ -2018,13 +2018,16 @@ e_calendar_item_key_press_event (ECalendarItem *calitem,
                                  GdkEvent *event)
 {
        guint keyval = event->key.keyval;
-       gboolean multi_selection = FALSE;
+       gboolean is_rtl;
+       gboolean multi_selection;
 
        if (event->key.state & GDK_CONTROL_MASK ||
            event->key.state & GDK_MOD1_MASK)
                return FALSE;
 
+       is_rtl = gtk_widget_get_direction (GTK_WIDGET (GNOME_CANVAS_ITEM (calitem)->canvas)) == 
GTK_TEXT_DIR_RTL;
        multi_selection = event->key.state & GDK_SHIFT_MASK;
+
        switch (keyval) {
        case GDK_KEY_Up:
                e_calendar_item_selection_add_days (
@@ -2038,12 +2041,12 @@ e_calendar_item_key_press_event (ECalendarItem *calitem,
                break;
        case GDK_KEY_Left:
                e_calendar_item_selection_add_days (
-                       calitem, -1,
+                       calitem, is_rtl ? 1 : -1,
                        multi_selection);
                break;
        case GDK_KEY_Right:
                e_calendar_item_selection_add_days (
-                       calitem, 1,
+                       calitem, is_rtl ? -1 : 1,
                        multi_selection);
                break;
        case GDK_KEY_space: