[E-devel] [PATCH] keyboard support patch for elm_calendar

[Jihoon Kim]

Hi, all.

Most widget supports keyboard events, but elm_calendar does not.
This patch makes elm_calendar be able to handle the key event.

When the Left or Right arrow key is pressed, selected item will be moved to
previous day, next day.
When the Up or Down arrow key is pressed, selected item will be moved to
previous week, next week.
In addition, calendar will show the previous or next month when the PgUp or
PgDn key is pressed.

Thanks.

Index: elm_calendar.c
===================================================================
--- elm_calendar.c      (리비전 54765)
+++ elm_calendar.c      (작업 사본)
@@ -51,6 +51,8 @@ struct _Elm_Calendar_Mark
 
 static const char *widtype = NULL;
 static void _on_focus_hook(void *data, Evas_Object *obj);
+static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src,
+                             Evas_Callback_Type type, void *event_info);
 
 static const char *_days_abbrev[] =
 {
@@ -498,24 +500,38 @@ _get_item_day(Evas_Object *obj, int selected_it)
 }
 
 static void
-_day_selected(void *data, Evas_Object *obj __UNUSED__, const char *emission 
__UNUSED__, const char *source)
+_update_sel_it(Evas_Object *obj, int sel_it)
 {
-   int sel_it, day;
-   Widget_Data *wd = elm_widget_data_get(data);
+   int day;
+   Widget_Data *wd = elm_widget_data_get(obj);
    if ((!wd) || (!wd->selection_enabled))
       return;
-   sel_it = atoi(source);
-   day = _get_item_day(data, sel_it);
+
+   day = _get_item_day(obj, sel_it);
    if (!day)
      return;
+
    _unselect(wd, wd->selected_it);
+
    wd->selected_it = sel_it;
    wd->selected_time.tm_mday = day;
    _select(wd, wd->selected_it);
    _fix_selected_time(wd);
-   evas_object_smart_callback_call(data, "changed", NULL);
+   evas_object_smart_callback_call(obj, "changed", NULL);
 }
 
+static void
+_day_selected(void *data, Evas_Object *obj __UNUSED__, const char *emission 
__UNUSED__, const char *source)
+{
+   int sel_it;
+   Widget_Data *wd = elm_widget_data_get(data);
+   if ((!wd) || (!wd->selection_enabled))
+      return;
+   sel_it = atoi(source);
+
+   _update_sel_it(data, sel_it);
+}
+
 static inline int
 _time_to_next_day(struct tm *t)
 {
@@ -547,6 +563,46 @@ _update_cur_date(void *data)
    return ECORE_CALLBACK_RENEW;
 }
 
+static Eina_Bool
+_event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__, Evas_Callback_Type 
type, void *event_info)
+{
+   if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
+   Evas_Event_Key_Down *ev = event_info;
+   Widget_Data *wd = elm_widget_data_get(obj);
+
+   if (!wd) return EINA_FALSE;
+   if (elm_widget_disabled_get(obj)) return EINA_FALSE;
+   if (!wd->selection_enabled) return EINA_FALSE;
+
+   if ((!strcmp(ev->keyname, "Left")) || (!strcmp(ev->keyname, "KP_Left")))
+     {
+        _update_sel_it(obj, wd->selected_it-1);    
+     }
+   else if ((!strcmp(ev->keyname, "Right")) || (!strcmp(ev->keyname, 
"KP_Right")))
+     {
+        _update_sel_it(obj, wd->selected_it+1);    
+     }
+   else if ((!strcmp(ev->keyname, "Up"))  || (!strcmp(ev->keyname, "KP_Up")))
+     {
+        _update_sel_it(obj, wd->selected_it-7);
+     }
+   else if ((!strcmp(ev->keyname, "Down")) || (!strcmp(ev->keyname, 
"KP_Down")))
+     {
+        _update_sel_it(obj, wd->selected_it+7);
+     }
+   else if ((!strcmp(ev->keyname, "Prior")) || (!strcmp(ev->keyname, 
"KP_Prior")))
+     {
+        if (_update_month(obj, -1)) _populate(obj);
+     }
+   else if ((!strcmp(ev->keyname, "Next")) || (!strcmp(ev->keyname, 
"KP_Next")))
+     {
+        if (_update_month(obj, 1)) _populate(obj);
+     }
+   else return EINA_FALSE;
+
+   return EINA_TRUE;
+}
+
 /**
  * Add a new calendar to the parent
  *
@@ -578,6 +634,7 @@ elm_calendar_add(Evas_Object *parent)
    elm_widget_signal_callback_add_hook_set(obj, _signal_callback_add_hook);
    elm_widget_signal_callback_del_hook_set(obj, _signal_callback_del_hook);
    elm_widget_can_focus_set(obj, EINA_TRUE);
+   elm_widget_event_hook_set(obj, _event_hook);
 
    wd->first_interval = 0.85;
    wd->year_min = 2;

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