elementary: reload theme when it change on disk.

NOTE: This is not very robust yet. But that's not related to this patch.
You can see the issue when switching between two different theme in
elementary_config. At some point elementary_test start to loose information.


SVN revision: 70895

legacy/elementary/ChangeLog

@@ -35,3 +35,7 @@
 2012-05-04  Leandro Pereira
 
         * Fix icon not appearing in default Genlist theme.
+
+2012-05-09  Cedric Bail
+
+	* Reload theme when it change on disk.

legacy/elementary/NEWS

@@ -6,6 +6,7 @@ Changes since Elementary 1.0.0:
 Additions:
 
    * Focus can be moved in all directions by elm_widget_focus_go function.
+   * Reload theme when it change on disk.
 
 Fixes:
 

legacy/elementary/src/lib/elm_bg.c

@@ -189,6 +189,18 @@ elm_bg_add(Evas_Object *parent)
    return obj;
 }
 
+static void
+_elm_bg_file_reload(void *data, Evas_Object *obj,
+		    const char *emission __UNUSED__, const char *source __UNUSED__)
+{
+  Evas_Object *bg = data;
+  const char *file;
+  const char *group;
+
+  edje_object_file_get(obj, &file, &group);
+  elm_bg_file_set(bg, file, group);
+}
+
 EAPI Eina_Bool
 elm_bg_file_set(Evas_Object *obj,
                 const char *file,
@@ -220,6 +232,8 @@ elm_bg_file_set(Evas_Object *obj,
         sd->img = edje_object_add
             (evas_object_evas_get(ELM_WIDGET_DATA(sd)->resize_obj));
         ret = edje_object_file_set(sd->img, file, group);
+	edje_object_signal_callback_del(sd->img, "edje,change,file", "edje", _elm_bg_file_reload);
+	edje_object_signal_callback_add(sd->img, "edje,change,file", "edje", _elm_bg_file_reload, obj);
      }
    else
      {

legacy/elementary/src/lib/elm_config.c

@@ -2119,6 +2119,7 @@ _elm_config_reload(void)
    _elm_config_font_overlay_apply();
    _elm_rescale();
    _elm_recache();
+   ecore_event_add(ELM_EVENT_CONFIG_ALL_CHANGED, NULL, NULL, NULL);
 }
 
 void

legacy/elementary/src/lib/elm_layout.c

@@ -286,6 +286,18 @@ _parts_cursors_apply(Elm_Layout_Smart_Data *sd)
      }
 }
 
+static void
+_reload_theme(void *data, Evas_Object *obj,
+              const char *emission __UNUSED__, const char *source __UNUSED__)
+{
+   Evas_Object *layout = data;
+   const char *file;
+   const char *group;
+
+   edje_object_file_get(obj, &file, &group);
+   elm_layout_file_set(layout, file, group);
+}
+
 static void
 _visuals_refresh(Evas_Object *obj,
                  Elm_Layout_Smart_Data *sd)
@@ -295,6 +307,13 @@ _visuals_refresh(Evas_Object *obj,
    _parts_cursors_apply(sd);
 
    ELM_LAYOUT_CLASS(ELM_WIDGET_DATA(sd)->api)->sizing_eval(obj);
+
+   edje_object_signal_callback_del(ELM_WIDGET_DATA(sd)->resize_obj,
+				   "edje,change,file", "edje",
+                                   _reload_theme);
+   edje_object_signal_callback_add(ELM_WIDGET_DATA(sd)->resize_obj,
+				   "edje,change,file", "edje",
+                                   _reload_theme, obj);
 }
 
 static Eina_Bool

legacy/elementary/src/lib/elm_theme.c

@@ -189,11 +189,56 @@ _elm_theme_data_find(Elm_Theme *th, const char *key)
    return NULL;
 }
 
+static void _elm_theme_idler_clean(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__);
+
+static Eina_Bool
+_elm_theme_reload_idler(void *data)
+{
+   Evas_Object *elm = data;
+
+   elm_widget_theme(elm);
+   evas_object_data_del(elm, "elm-theme-reload-idler");
+   evas_object_event_callback_del(elm, EVAS_CALLBACK_DEL, _elm_theme_idler_clean);
+   return EINA_FALSE;
+}
+
+static void
+_elm_theme_idler_clean(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj, void *event_info __UNUSED__)
+{
+   Ecore_Idler *idler;
+
+   idler = evas_object_data_get(obj, "elm-theme-reload-idler");
+   if (idler) ecore_idler_del(idler);
+   evas_object_data_del(obj, "elm-theme-reload-idler");
+}
+
+static void
+_elm_theme_reload(void *data __UNUSED__, Evas_Object *obj,
+                  const char *emission __UNUSED__, const char *source __UNUSED__)
+{
+   Evas_Object *elm;
+
+   elm = evas_object_data_get(obj, "elm-parent");
+   if (elm)
+     {
+        evas_object_event_callback_add(elm, EVAS_CALLBACK_DEL, _elm_theme_idler_clean, NULL);
+        evas_object_data_set(elm, "elm-theme-reload-idler", ecore_idler_add(_elm_theme_reload_idler, elm));
+     }
+}                  
+
 Eina_Bool
 _elm_theme_object_set(Evas_Object *parent, Evas_Object *o, const char *clas, const char *group, const char *style)
 {
    Elm_Theme *th = NULL;
+   void *test;
+
    if (parent) th = elm_widget_theme_get(parent);
+   test = evas_object_data_get(o, "edje,theme,watcher");
+   if (!test)
+     {
+        edje_object_signal_callback_add(o, "edje,change,file", "edje", _elm_theme_reload, NULL);
+        evas_object_data_set(o, "edje,theme,watcher", (void*) -1);
+     }
    return _elm_theme_set(th, o, clas, group, style);
 }
 

legacy/elementary/src/lib/elm_thumb.c

@@ -198,6 +198,8 @@ _retry_thumb(Widget_Data *wd)
                    wd->file);
              goto view_err;
           }
+	/* FIXME: Do we want to reload a thumbnail when the file change ? I think no at the moment as
+	   this may increase the presure on the system a lot when using it in a file browser */
      }
    else
      {

legacy/elementary/src/lib/els_icon.c

@@ -182,6 +182,7 @@ _els_smart_icon_file_edje_set(Evas_Object *obj, const char *file, const char *pa
    sd->edje = EINA_TRUE;
    if (!edje_object_file_set(sd->obj, file, part))
      return EINA_FALSE;
+   /* FIXME: do i want to update icon on file change ? */
    _smart_reconfigure(sd);
    return EINA_TRUE;
 }

legacy/elementary/src/lib/els_scroller.c

@@ -301,6 +301,20 @@ elm_smart_scroller_extern_pan_set(Evas_Object *obj, Evas_Object *pan,
    evas_object_show(sd->pan_obj);
 }
 
+static void
+_elm_smart_scroller_custom_edje_file_reload(void *data,
+					    Evas_Object *obj,
+					    const char *emission __UNUSED__,
+					    const char *source __UNUSED__)
+{
+   Evas_Object *scroller = data;
+   const char *file;
+   const char *group;
+
+   edje_object_file_get(obj, &file, &group);
+   elm_smart_scroller_custom_edje_file_set(scroller, (char*) file, (char*) group);
+}
+
 void
 elm_smart_scroller_custom_edje_file_set(Evas_Object *obj, char *file, char *group)
 {
@@ -309,6 +323,13 @@ elm_smart_scroller_custom_edje_file_set(Evas_Object *obj, char *file, char *grou
    edje_object_file_set(sd->edje_obj, file, group);
    if (sd->pan_obj)
      edje_object_part_swallow(sd->edje_obj, "elm.swallow.content", sd->pan_obj);
+   edje_object_signal_callback_del(sd->edje_obj,
+                                   "edje,change,file", "edje",
+                                   _elm_smart_scroller_custom_edje_file_reload);
+   edje_object_signal_callback_add(sd->edje_obj,
+                                   "edje,change,file", "edje",
+                                   _elm_smart_scroller_custom_edje_file_reload,
+                                   obj);
    sd->vbar_visible = !sd->vbar_visible;
    sd->hbar_visible = !sd->hbar_visible;
    _smart_scrollbar_bar_visibility_adjust(sd);