genlist: track viewport size changes and re-eval items when it resizes

Summary:
This uses new Evas Callback type EVAS_CALLBACK_CANVAS_VIEWPORT_RESIZE
to listen to view port size changes.

Reviewers: Hermet, cedric, raster

Reviewed By: raster

Subscribers: SanghyeonLee, seoz

Differential Revision: https://phab.enlightenment.org/D2527

Change-Id: I2b84fb712d964338430bdc4db874f70d59789176
origin: upstream

diff --git a/src/lib/elm_genlist.c b/src/lib/elm_genlist.c
index d45ad4e..016ca31 100644 (file)
--- a/src/lib/elm_genlist.c
+++ b/src/lib/elm_genlist.c
@@ -5358,6 +5358,13 @@ _elm_genlist_focus_highlight_move_up_end_cb(void *data,
       _elm_widget_focus_highlight_signal_emit(gl, "elm,action,focus,move,home,down", "elm");
 }
 
+static void
+_evas_viewport_resize_cb(void *d, Evas *e EINA_UNUSED, void *ei EINA_UNUSED)
+{
+   Elm_Genlist_Data *priv = d;
+   evas_object_smart_changed(priv->pan_obj);
+}
+
 EOLIAN static void
 _elm_genlist_evas_object_smart_add(Eo *obj, Elm_Genlist_Data *priv)
 {
@@ -5437,6 +5444,9 @@ _elm_genlist_evas_object_smart_add(Eo *obj, Elm_Genlist_Data *priv)
 
    edje_object_signal_callback_add(wd->resize_obj, "elm,looping,up,done", "elm", _elm_genlist_looping_up_cb, obj);
    edje_object_signal_callback_add(wd->resize_obj, "elm,looping,down,done", "elm", _elm_genlist_looping_down_cb, obj);
+   evas_event_callback_add(evas_object_evas_get(obj),
+                           EVAS_CALLBACK_CANVAS_VIEWPORT_RESIZE,
+                           _evas_viewport_resize_cb, priv);
 }
 
 EOLIAN static void
@@ -5447,6 +5457,10 @@ _elm_genlist_evas_object_smart_del(Eo *obj, Elm_Genlist_Data *sd)
    elm_genlist_clear(obj);
    for (i = 0; i < 2; i++)
      ELM_SAFE_FREE(sd->stack[i], evas_object_del);
+
+   evas_event_callback_del_full(evas_object_evas_get(obj),
+                                EVAS_CALLBACK_CANVAS_VIEWPORT_RESIZE,
+                                _evas_viewport_resize_cb, sd);
    ELM_SAFE_FREE(sd->pan_obj, evas_object_del);
 
    _item_cache_zero(sd);