From 6c58680691e04ce418e5247f995a16ac9c1436f5 Mon Sep 17 00:00:00 2001
From: Jaehwan Kim <jae.hwan.kim@samsung.com>
Date: Mon, 1 Jul 2013 20:28:23 +0900
Subject: [PATCH] Add the
 elm_scrollable_interface_content_viewport_resize_cb_set. When the viewport is
 resized, the enrolled function is called.

Change-Id: I77ebbf7cf54d13130689f7e31f8880de6bfad219
---
 src/lib/elm_interface_scrollable.c | 34 ++++++++++++++++++++++++++++++++++
 src/lib/elm_interface_scrollable.h |  7 +++++++
 src/lib/elm_scroller.c             | 10 ++++++++++
 3 files changed, 51 insertions(+)

diff --git a/src/lib/elm_interface_scrollable.c b/src/lib/elm_interface_scrollable.c
index aea6abf..35e8784 100644
--- a/src/lib/elm_interface_scrollable.c
+++ b/src/lib/elm_interface_scrollable.c
@@ -3342,6 +3342,22 @@ _elm_scroll_pan_changed_cb(void *data,
 }
 
 static void
+_elm_scroll_pan_resized_cb(void *data,
+                          Evas *e __UNUSED__,
+                          Evas_Object *obj __UNUSED__,
+                          void *event_info __UNUSED__)
+{
+   Evas_Coord w, h;
+   Elm_Scrollable_Smart_Interface_Data *sid = data;
+
+   if (sid->cb_func.content_viewport_resize)
+     {
+        _elm_scroll_content_viewport_size_get(sid->obj, &w, &h);
+        sid->cb_func.content_viewport_resize(sid->obj, w, h);
+     }
+}
+
+static void
 _elm_scroll_content_del_cb(void *data,
                            Evas *e __UNUSED__,
                            Evas_Object *obj __UNUSED__,
@@ -3385,6 +3401,8 @@ _elm_scroll_content_set(Evas_Object *obj,
         sid->pan_obj = o;
         evas_object_smart_callback_add
           (o, SIG_CHANGED, _elm_scroll_pan_changed_cb, sid);
+        evas_object_event_callback_add(o, EVAS_CALLBACK_RESIZE,
+                                       _elm_scroll_pan_resized_cb, sid);
         edje_object_part_swallow(sid->edje_obj, "elm.swallow.content", o);
      }
 
@@ -3416,6 +3434,8 @@ _elm_scroll_extern_pan_set(Evas_Object *obj,
      {
         evas_object_smart_callback_del
           (sid->pan_obj, SIG_CHANGED, _elm_scroll_pan_changed_cb);
+        evas_object_event_callback_del(sid->pan_obj, EVAS_CALLBACK_RESIZE,
+                                       _elm_scroll_pan_resized_cb);
      }
 
    if (sid->extern_pan)
@@ -3446,6 +3466,8 @@ _elm_scroll_extern_pan_set(Evas_Object *obj,
    sid->extern_pan = EINA_TRUE;
    evas_object_smart_callback_add
      (sid->pan_obj, SIG_CHANGED, _elm_scroll_pan_changed_cb, sid);
+   evas_object_event_callback_add(sid->pan_obj, EVAS_CALLBACK_RESIZE,
+                                  _elm_scroll_pan_resized_cb, sid);
    edje_object_part_swallow
      (sid->edje_obj, "elm.swallow.content", sid->pan_obj);
 }
@@ -3651,6 +3673,17 @@ _elm_scroll_content_min_limit_cb_set(Evas_Object *obj,
    sid->cb_func.content_min_limit = c_min_limit_cb;
 }
 
+static void
+_elm_scroll_content_viewport_resize_cb_set(Evas_Object *obj,
+                                 void (*c_viewport_resize_cb)(Evas_Object *obj,
+                                                              Evas_Coord w,
+                                                              Evas_Coord h))
+{
+   ELM_SCROLL_IFACE_DATA_GET_OR_RETURN(obj, sid);
+
+   sid->cb_func.content_viewport_resize = c_viewport_resize_cb;
+}
+
 static Eina_Bool
 _elm_scroll_momentum_animator_disabled_get(const Evas_Object *obj)
 {
@@ -4237,6 +4270,7 @@ EAPI const Elm_Scrollable_Smart_Interface ELM_SCROLLABLE_IFACE =
    _elm_scroll_hbar_press_cb_set,
    _elm_scroll_hbar_unpress_cb_set,
    _elm_scroll_content_min_limit_cb_set,
+   _elm_scroll_content_viewport_resize_cb_set,
    _elm_scroll_content_pos_set,
    _elm_scroll_content_pos_get,
    _elm_scroll_content_region_show,
diff --git a/src/lib/elm_interface_scrollable.h b/src/lib/elm_interface_scrollable.h
index 1e2857b..b355f12 100644
--- a/src/lib/elm_interface_scrollable.h
+++ b/src/lib/elm_interface_scrollable.h
@@ -293,6 +293,9 @@ struct _Elm_Scrollable_Smart_Interface_Data
       void (*content_min_limit)(Evas_Object *obj,
                                 Eina_Bool w,
                                 Eina_Bool h);
+      void (*content_viewport_resize)(Evas_Object *obj,
+                                      Evas_Coord w,
+                                      Evas_Coord h);
    } cb_func;
 
    struct
@@ -408,6 +411,10 @@ struct _Elm_Scrollable_Smart_Interface
                                           void (*c_limit_cb)(Evas_Object *obj,
                                                              Eina_Bool w,
                                                              Eina_Bool h));
+   void       (*content_viewport_resize_cb_set)(Evas_Object *obj,
+                                void (*c_viewport_resize_cb)(Evas_Object *obj,
+                                                             Evas_Coord w,
+                                                             Evas_Coord h));
 
    /* set the position of content object inside the scrolling region,
     * immediately */
diff --git a/src/lib/elm_scroller.c b/src/lib/elm_scroller.c
index 49ed4e2..e11ff5a 100644
--- a/src/lib/elm_scroller.c
+++ b/src/lib/elm_scroller.c
@@ -763,6 +763,14 @@ _elm_scroller_content_min_limit_cb(Evas_Object *obj,
 }
 
 static void
+_elm_scroller_content_viewport_resize_cb(Evas_Object *obj,
+                                         Evas_Coord w __UNUSED__,
+                                         Evas_Coord h __UNUSED__)
+{
+   elm_layout_sizing_eval(obj);
+}
+
+static void
 _elm_scroller_smart_add(Evas_Object *obj)
 {
    Evas_Coord minw, minh;
@@ -818,6 +826,8 @@ _elm_scroller_smart_add(Evas_Object *obj)
 
    priv->s_iface->content_min_limit_cb_set
      (obj, _elm_scroller_content_min_limit_cb);
+   priv->s_iface->content_viewport_resize_cb_set
+     (obj, _elm_scroller_content_viewport_resize_cb);
 }
 
 static void
-- 
2.7.4