bugfix: evas_object_box should reset size_hint_min to zero when no child exists.

there are some early-return code that were leaving the size_hint as it
was before, then if you removed every child it should go to 0x0 but
couldn't.

PLEASE BACKPORT THIS TO 1.7 BRANCH FOR ME :-(



SVN revision: 79948

ChangeLog

@@ -1,3 +1,8 @@
+2012-11-30 Gustavo Sverzut Barbieri (k-s)
+
+	* Fix evas_object_box.c to properly reset size_hint_min to zero if
+	there are no objects packed into the box.
+
 2012-11-22 Paulo Alcantara (pcacjr)
 
 	* Add scalecache support to Cserve2

NEWS

@@ -28,3 +28,4 @@ Fixes:
     * Fixed glGetIntegerv() in Direct Rendering mode for Evas GL
       to properly handle GL_SCISSOR_BOX and GL_VIEWPORT parameters.
     * Fixed textblock textprop leak.
+    * Fixed evas_object_box to reset size_hint_min to zero when no child.

src/lib/evas/canvas/evas_object_box.c

@@ -745,11 +745,17 @@ _box_layout_horizontal(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    objects = (Evas_Object_Box_Option **)alloca(sizeof(Evas_Object_Box_Option *) * n_children);
    if (!objects)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
    global_pad = priv->pad.h;
@@ -911,11 +917,17 @@ _box_layout_vertical(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    objects = (Evas_Object_Box_Option **)alloca(sizeof(Evas_Object_Box_Option *) * n_children);
    if (!objects)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
    global_pad = priv->pad.v;
@@ -1021,7 +1033,10 @@ _box_layout_homogeneous_horizontal(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
 
@@ -1090,7 +1105,10 @@ _box_layout_homogeneous_vertical(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
 
@@ -1159,7 +1177,10 @@ _box_layout_homogeneous_max_size_horizontal(Eo *o, void *_pd, va_list *list EINA
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
 
@@ -1251,7 +1272,10 @@ _box_layout_homogeneous_max_size_vertical(Eo *o, void *_pd, va_list *list EINA_U
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    evas_object_geometry_get(o, &x, &y, &w, &h);
 
@@ -1411,7 +1435,10 @@ _box_layout_flow_horizontal(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    /* *per row* arrays */
    row_max_h = (int *)alloca(sizeof(int) * n_children);
@@ -1593,7 +1620,10 @@ _box_layout_flow_vertical(Eo *o, void *_pd, va_list *list EINA_UNUSED)
 
    n_children = eina_list_count(priv->children);
    if (!n_children)
-     return;
+     {
+        evas_object_size_hint_min_set(o, 0, 0);
+        return;
+     }
 
    /* *per col* arrays */
    col_max_w = (int *)alloca(sizeof(int) * n_children);