1 files changed, 852 insertions, 0 deletions

diff --git a/libraries/elementary/src/lib/elm_hover.c b/libraries/elementary/src/lib/elm_hover.c
new file mode 100644
index 0000000..ec92a9c
--- /dev/null
+++ b/libraries/elementary/src/lib/elm_hover.c
@@ -0,0 +1,852 @@
+#include <Elementary.h>
+#include "elm_priv.h"
+
+typedef struct _Widget_Data Widget_Data;
+typedef struct _Content_Info Content_Info;
+
+#ifndef MAX
+# define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#define ELM_HOVER_PARTS_FOREACH unsigned int i = 0; \
+  for (i = 0; i < sizeof(wd->subs) / sizeof(wd->subs[0]); i++)
+
+static const char *_directions[] = {
+  "left",
+  "top-left",
+  "top",
+  "top-right",
+  "right",
+  "bottom-right",
+  "bottom",
+  "bottom-left",
+  "middle"
+};
+
+#define _HOV_LEFT (_directions[0])
+#define _HOV_TOP_LEFT (_directions[1])
+#define _HOV_TOP (_directions[2])
+#define _HOV_TOP_RIGHT (_directions[2])
+#define _HOV_RIGHT (_directions[4])
+#define _HOV_BOTTOM_RIGHT (_directions[5])
+#define _HOV_BOTTOM (_directions[6])
+#define _HOV_BOTTOM_LEFT (_directions[7])
+#define _HOV_MIDDLE (_directions[8])
+
+struct _Content_Info
+{
+   const char *swallow;
+   Evas_Object *obj;
+};
+
+struct _Widget_Data
+{
+   Evas_Object *hov, *cov;
+   Evas_Object *offset, *size;
+   Evas_Object *parent, *target;
+   Evas_Object *smt_sub;
+   Content_Info subs[sizeof(_directions)/sizeof(_directions[0])];
+};
+
+static const char *widtype = NULL;
+static void _del_pre_hook(Evas_Object *obj);
+static void _del_hook(Evas_Object *obj);
+static void _mirrored_set(Evas_Object *obj, Eina_Bool rtl);
+static void _theme_hook(Evas_Object *obj);
+static void _sizing_eval(Evas_Object *obj);
+static void _reval_content(Evas_Object *obj);
+static void _sub_del(void *data, Evas_Object *obj, void *event_info);
+static void _hov_show_do(Evas_Object *obj);
+static void _hov_move(void *data, Evas *e, Evas_Object *obj, void *event_info);
+static void _hov_resize(void *data, Evas *e, Evas_Object *obj, void *event_info);
+static void _hov_show(void *data, Evas *e, Evas_Object *obj, void *event_info);
+static void _hov_hide(void *data, Evas *e, Evas_Object *obj, void *event_info);
+static void _on_focus_hook(void *data, Evas_Object *obj);
+static void _elm_hover_sub_obj_placement_eval_cb(void *data, Evas *e, Evas_Object *obj, void *event_info);
+static void _elm_hover_sub_obj_placement_eval(Evas_Object *obj);
+static void _content_set_hook(Evas_Object *obj, const char *swallow, Evas_Object *content);
+static Evas_Object * _content_get_hook(const Evas_Object *obj, const char *swallow);
+static Evas_Object * _content_unset_hook(Evas_Object *obj, const char *swallow);
+
+static const char SIG_CLICKED[] = "clicked";
+static const char SIG_SMART_LOCATION_CHANGED[] = "smart,changed";
+static const Evas_Smart_Cb_Description _signals[] = {
+       {SIG_CLICKED, ""},
+       {SIG_SMART_LOCATION_CHANGED, ""},
+       {NULL, NULL}
+};
+
+static void
+_del_pre_hook(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   if (evas_object_visible_get(obj))
+     evas_object_smart_callback_call(obj, SIG_CLICKED, NULL);
+   elm_hover_target_set(obj, NULL);
+   elm_hover_parent_set(obj, NULL);
+   evas_object_event_callback_del_full(wd->hov, EVAS_CALLBACK_MOVE, _hov_move, obj);
+   evas_object_event_callback_del_full(wd->hov, EVAS_CALLBACK_RESIZE, _hov_resize, obj);
+   evas_object_event_callback_del_full(wd->hov, EVAS_CALLBACK_SHOW, _hov_show, obj);
+   evas_object_event_callback_del_full(wd->hov, EVAS_CALLBACK_HIDE, _hov_hide, obj);
+}
+
+static void
+_del_hook(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+   free(wd);
+}
+
+static void
+_on_focus_hook(void *data __UNUSED__, Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+   if (elm_widget_focus_get(obj))
+     {
+        edje_object_signal_emit(wd->cov, "elm,action,focus", "elm");
+        evas_object_focus_set(wd->cov, EINA_TRUE);
+     }
+   else
+     {
+        edje_object_signal_emit(wd->cov, "elm,action,unfocus", "elm");
+        evas_object_focus_set(wd->cov, EINA_FALSE);
+     }
+}
+
+static void
+_mirrored_set(Evas_Object *obj, Eina_Bool rtl)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+   edje_object_mirrored_set(wd->cov, rtl);
+}
+
+static void
+_theme_hook(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+   _elm_widget_mirrored_reload(obj);
+   _mirrored_set(obj, elm_widget_mirrored_get(obj));
+   // FIXME: hover contents doesn't seem to propagate resizes properly
+   _elm_theme_object_set(obj, wd->cov, "hover", "base", elm_widget_style_get(obj));
+   edje_object_scale_set(wd->cov, elm_widget_scale_get(obj) *
+                         _elm_config->scale);
+
+   if (wd->smt_sub)
+     _elm_hover_sub_obj_placement_eval(obj);
+   else
+     _reval_content(obj);
+   _sizing_eval(obj);
+   if (evas_object_visible_get(wd->cov)) _hov_show_do(obj);
+}
+
+static void
+_signal_emit_hook(Evas_Object *obj, const char *emission, const char *source)
+{
+   Widget_Data *wd;
+
+   wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   edje_object_signal_emit(wd->cov, emission, source);
+}
+
+static void
+_signal_callback_add_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
+{
+   Widget_Data *wd;
+
+   wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   edje_object_signal_callback_add(wd->hov, emission, source, func_cb, data);
+}
+
+static void
+_signal_callback_del_hook(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func_cb, void *data)
+{
+   Widget_Data *wd;
+
+   wd = elm_widget_data_get(obj);
+
+   edje_object_signal_callback_del_full(wd->hov, emission, source, func_cb,
+                                        data);
+}
+
+static void
+_elm_hover_left_space_calc(Widget_Data *wd, Evas_Coord *spc_l, Evas_Coord *spc_t, Evas_Coord *spc_r, Evas_Coord *spc_b)
+{
+   Evas_Coord x = 0, y = 0, w = 0, h = 0, x2 = 0, y2 = 0, w2 = 0, h2 = 0;
+
+   if (wd->parent)
+     evas_object_geometry_get(wd->parent, &x, &y, &w, &h);
+   if (wd->target)
+     evas_object_geometry_get(wd->target, &x2, &y2, &w2, &h2);
+
+   *spc_l = x2 - x;
+   *spc_r = (x + w) - (x2 + w2);
+   if (*spc_l < 0)
+     *spc_l = 0;
+   if (*spc_r < 0)
+     *spc_r = 0;
+
+   *spc_t = y2 - y;
+   *spc_b = (y + h) - (y2 + h2);
+   if (*spc_t < 0)
+     *spc_t = 0;
+   if (*spc_b < 0)
+     *spc_b = 0;
+}
+
+static void
+_sizing_eval(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   Evas_Coord ofs_x, x = 0, y = 0, w = 0, h = 0, x2 = 0, y2 = 0, w2 = 0, h2 = 0;
+   if (!wd) return;
+   if (wd->parent) evas_object_geometry_get(wd->parent, &x, &y, &w, &h);
+   if (wd->hov) evas_object_geometry_get(wd->hov, &x2, &y2, &w2, &h2);
+
+   if (elm_widget_mirrored_get(obj))
+     ofs_x = w - (x2 - x) - w2;
+   else
+     ofs_x = x2 - x;
+
+   evas_object_move(wd->cov, x, y);
+   evas_object_resize(wd->cov, w, h);
+   evas_object_size_hint_min_set(wd->offset, ofs_x, y2 - y);
+   evas_object_size_hint_min_set(wd->size, w2, h2);
+   edje_object_part_swallow(wd->cov, "elm.swallow.offset", wd->offset);
+   edje_object_part_swallow(wd->cov, "elm.swallow.size", wd->size);
+}
+
+static void
+_reval_content(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   ELM_HOVER_PARTS_FOREACH
+     {
+        char buf[1024];
+        snprintf(buf, sizeof(buf), "elm.swallow.slot.%s", wd->subs[i].swallow);
+        edje_object_part_swallow(wd->cov, buf, wd->subs[i].obj);
+     }
+}
+
+static const char *
+_elm_hover_smart_content_location_get(Widget_Data *wd,  Evas_Coord spc_l, Evas_Coord spc_t, Evas_Coord spc_r, Evas_Coord spc_b)
+{
+   Evas_Coord c_w = 0, c_h = 0, mid_w, mid_h;
+   int max;
+
+   evas_object_size_hint_min_get(wd->smt_sub, &c_w, &c_h);
+   mid_w = c_w / 2;
+   mid_h = c_h / 2;
+
+   if (spc_l > spc_r)
+     goto left;
+
+   max = MAX(spc_t, spc_r);
+   max = MAX(max, spc_b);
+
+   if (max == spc_t)
+     {
+        if (mid_w > spc_l)
+          return _HOV_TOP_RIGHT;
+
+        return _HOV_TOP;
+     }
+
+   if (max == spc_r)
+     {
+        if (mid_h > spc_t)
+          return _HOV_BOTTOM_RIGHT;
+        else if (mid_h > spc_b)
+          return _HOV_TOP_RIGHT;
+
+        return _HOV_RIGHT;
+     }
+
+   if (mid_h > spc_l)
+     return _HOV_BOTTOM_RIGHT;
+
+   return _HOV_BOTTOM;
+
+left:
+   max = MAX(spc_t, spc_l);
+   max = MAX(max, spc_b);
+
+   if (max == spc_t)
+     {
+        if (mid_w > spc_r)
+          return _HOV_TOP_LEFT;
+
+        return _HOV_TOP;
+     }
+
+   if (max == spc_l)
+     {
+        if (mid_h > spc_t)
+          return _HOV_BOTTOM_LEFT;
+        else if (mid_h > spc_b)
+          return _HOV_TOP_LEFT;
+
+        return _HOV_LEFT;
+     }
+
+   if (mid_h > spc_r)
+     return _HOV_BOTTOM_LEFT;
+
+   return _HOV_BOTTOM;
+}
+
+static void
+_sub_del(void *data __UNUSED__, Evas_Object *obj, void *event_info)
+{
+   Widget_Data *wd;
+   Evas_Object *sub;
+
+   sub = event_info;
+   wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   if (wd->smt_sub)
+     {
+        if (wd->smt_sub == sub)
+          wd->smt_sub = NULL;
+     }
+   else
+     {
+        ELM_HOVER_PARTS_FOREACH
+          {
+             if (wd->subs[i].obj == sub)
+               {
+                  wd->subs[i].obj = NULL;
+                  break;
+               }
+          }
+     }
+}
+
+static void
+_hov_show_do(Evas_Object *obj)
+{
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd)
+     return;
+
+   if (wd->cov)
+     {
+        evas_object_show(wd->cov);
+        edje_object_signal_emit(wd->cov, "elm,action,show", "elm");
+     }
+
+   ELM_HOVER_PARTS_FOREACH
+     {
+        char buf[1024];
+
+        if (wd->subs[i].obj)
+          {
+             snprintf(buf, sizeof(buf), "elm,action,slot,%s,show",
+                      wd->subs[i].swallow);
+             edje_object_signal_emit(wd->cov, buf, "elm");
+          }
+     }
+}
+
+static void
+_hov_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _sizing_eval(data);
+}
+
+static void
+_hov_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _sizing_eval(data);
+}
+
+static void
+_hov_show(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _hov_show_do(data);
+}
+
+static void
+_hov_hide(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd) return;
+   if (wd->cov)
+     {
+        edje_object_signal_emit(wd->cov, "elm,action,hide", "elm");
+        evas_object_hide(wd->cov);
+     }
+
+   ELM_HOVER_PARTS_FOREACH
+     {
+        char buf[1024];
+
+        if (wd->subs[i].obj)
+          {
+             snprintf(buf, sizeof(buf), "elm,action,slot,%s,hide",
+                      wd->subs[i].swallow);
+             edje_object_signal_emit(wd->cov, buf, "elm");
+          }
+     }
+}
+
+static void
+_target_del(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd) return;
+   wd->target = NULL;
+}
+
+static void
+_target_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd)
+     return;
+
+   _sizing_eval(data);
+   _elm_hover_sub_obj_placement_eval(data);
+}
+
+static void
+_signal_dismiss(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd) return;
+   evas_object_hide(data);
+   evas_object_smart_callback_call(data, SIG_CLICKED, NULL);
+}
+
+static void
+_parent_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _sizing_eval(data);
+}
+
+static void
+_parent_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _sizing_eval(data);
+}
+
+static void
+_parent_show(void *data __UNUSED__, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+}
+
+static void
+_parent_hide(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd) return;
+   evas_object_hide(wd->cov);
+}
+
+static void
+_parent_del(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   Widget_Data *wd = elm_widget_data_get(data);
+   if (!wd) return;
+   elm_hover_parent_set(data, NULL);
+   _sizing_eval(data);
+}
+
+EAPI Evas_Object *
+elm_hover_add(Evas_Object *parent)
+{
+   Evas_Object *obj;
+   Evas *e;
+   Widget_Data *wd;
+
+   ELM_WIDGET_STANDARD_SETUP(wd, Widget_Data, parent, e, obj, NULL);
+
+   ELM_SET_WIDTYPE(widtype, "hover");
+   elm_widget_type_set(obj, "hover");
+   elm_widget_sub_object_add(parent, obj);
+   elm_widget_on_focus_hook_set(obj, _on_focus_hook, NULL);
+   elm_widget_data_set(obj, wd);
+   elm_widget_del_pre_hook_set(obj, _del_pre_hook);
+   elm_widget_theme_hook_set(obj, _theme_hook);
+   elm_widget_del_hook_set(obj, _del_hook);
+   elm_widget_can_focus_set(obj, EINA_TRUE);
+   elm_widget_signal_emit_hook_set(obj, _signal_emit_hook);
+   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_content_set_hook_set(obj, _content_set_hook);
+   elm_widget_content_get_hook_set(obj, _content_get_hook);
+   elm_widget_content_unset_hook_set(obj, _content_unset_hook);
+
+   ELM_HOVER_PARTS_FOREACH
+      wd->subs[i].swallow = _directions[i];
+
+   wd->hov = evas_object_rectangle_add(e);
+   evas_object_pass_events_set(wd->hov, EINA_TRUE);
+   evas_object_color_set(wd->hov, 0, 0, 0, 0);
+   elm_widget_resize_object_set(obj, wd->hov);
+   evas_object_event_callback_add(wd->hov, EVAS_CALLBACK_MOVE, _hov_move, obj);
+   evas_object_event_callback_add(wd->hov, EVAS_CALLBACK_RESIZE, _hov_resize, obj);
+   evas_object_event_callback_add(wd->hov, EVAS_CALLBACK_SHOW, _hov_show, obj);
+   evas_object_event_callback_add(wd->hov, EVAS_CALLBACK_HIDE, _hov_hide, obj);
+
+   wd->cov = edje_object_add(e);
+   _elm_theme_object_set(obj, wd->cov, "hover", "base", "default");
+   elm_widget_sub_object_add(obj, wd->cov);
+   edje_object_signal_callback_add(wd->cov, "elm,action,dismiss", "",
+                                   _signal_dismiss, obj);
+
+   wd->offset = evas_object_rectangle_add(e);
+   evas_object_pass_events_set(wd->offset, EINA_TRUE);
+   evas_object_color_set(wd->offset, 0, 0, 0, 0);
+   elm_widget_sub_object_add(obj, wd->offset);
+
+   wd->size = evas_object_rectangle_add(e);
+   evas_object_pass_events_set(wd->size, EINA_TRUE);
+   evas_object_color_set(wd->size, 0, 0, 0, 0);
+   elm_widget_sub_object_add(obj, wd->size);
+
+   edje_object_part_swallow(wd->cov, "elm.swallow.offset", wd->offset);
+   edje_object_part_swallow(wd->cov, "elm.swallow.size", wd->size);
+
+   evas_object_smart_callback_add(obj, "sub-object-del", _sub_del, obj);
+
+   elm_hover_parent_set(obj, parent);
+   evas_object_smart_callbacks_descriptions_set(obj, _signals);
+
+   _mirrored_set(obj, elm_widget_mirrored_get(obj));
+   _sizing_eval(obj);
+   return obj;
+}
+
+EAPI void
+elm_hover_target_set(Evas_Object *obj, Evas_Object *target)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype);
+   Widget_Data *wd = elm_widget_data_get(obj);
+
+   if (wd->target)
+     {
+        evas_object_event_callback_del_full(wd->target, EVAS_CALLBACK_DEL,
+                                            _target_del, obj);
+        evas_object_event_callback_del_full(wd->target, EVAS_CALLBACK_MOVE,
+                                            _target_move, obj);
+     }
+   wd->target = target;
+   if (wd->target)
+     {
+        evas_object_event_callback_add(wd->target, EVAS_CALLBACK_DEL,
+                                       _target_del, obj);
+        evas_object_event_callback_add(wd->target, EVAS_CALLBACK_MOVE,
+                                       _target_move, obj);
+        elm_widget_hover_object_set(target, obj);
+        _sizing_eval(obj);
+     }
+}
+
+
+EAPI void
+elm_hover_parent_set(Evas_Object *obj, Evas_Object *parent)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype);
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+   if (wd->parent)
+     {
+        evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_MOVE,
+                                            _parent_move, obj);
+        evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_RESIZE,
+                                            _parent_resize, obj);
+        evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_SHOW,
+                                            _parent_show, obj);
+        evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_HIDE,
+                                            _parent_hide, obj);
+        evas_object_event_callback_del_full(wd->parent, EVAS_CALLBACK_DEL,
+                                            _parent_del, obj);
+     }
+   wd->parent = parent;
+   if (wd->parent)
+     {
+        evas_object_event_callback_add(wd->parent, EVAS_CALLBACK_MOVE,
+                                       _parent_move, obj);
+        evas_object_event_callback_add(wd->parent, EVAS_CALLBACK_RESIZE,
+                                       _parent_resize, obj);
+        evas_object_event_callback_add(wd->parent, EVAS_CALLBACK_SHOW,
+                                       _parent_show, obj);
+        evas_object_event_callback_add(wd->parent, EVAS_CALLBACK_HIDE,
+                                       _parent_hide, obj);
+        evas_object_event_callback_add(wd->parent, EVAS_CALLBACK_DEL,
+                                       _parent_del, obj);
+        //      elm_widget_sub_object_add(parent, obj);
+     }
+   _sizing_eval(obj);
+}
+
+EAPI Evas_Object *
+elm_hover_target_get(const Evas_Object *obj)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype) NULL;
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return NULL;
+
+   return wd->target;
+}
+
+EAPI Evas_Object *
+elm_hover_parent_get(const Evas_Object *obj)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype) NULL;
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return NULL;
+
+   return wd->parent;
+}
+
+static void
+_elm_hover_subs_del(Widget_Data *wd)
+{
+   ELM_HOVER_PARTS_FOREACH
+     {
+        if (wd->subs[i].obj)
+          {
+             evas_object_del(wd->subs[i].obj);
+             wd->subs[i].obj = NULL;
+          }
+     }
+}
+
+static void
+_elm_hover_sub_obj_placement_eval(Evas_Object *obj)
+{
+   Evas_Coord spc_l, spc_r, spc_t, spc_b;
+   const char *smart_dir;
+   Widget_Data *wd;
+   char buf[1024];
+
+   wd = elm_widget_data_get(obj);
+   if (!wd->smt_sub)
+     return;
+
+   _elm_hover_left_space_calc(wd, &spc_l, &spc_t, &spc_r, &spc_b);
+
+   edje_object_part_unswallow(wd->cov, wd->smt_sub);
+
+   smart_dir = _elm_hover_smart_content_location_get(wd, spc_l, spc_t, spc_r,
+                                                     spc_b);
+   evas_object_smart_callback_call(obj, SIG_SMART_LOCATION_CHANGED,
+                                   (void *)smart_dir);
+
+   if (elm_widget_mirrored_get(obj))
+     {
+        if (smart_dir == _HOV_BOTTOM_LEFT)
+          smart_dir = _HOV_BOTTOM_RIGHT;
+        else if (smart_dir == _HOV_BOTTOM_RIGHT)
+          smart_dir = _HOV_BOTTOM_LEFT;
+        else if (smart_dir == _HOV_RIGHT)
+          smart_dir = _HOV_LEFT;
+        else if (smart_dir == _HOV_LEFT)
+          smart_dir = _HOV_RIGHT;
+        else if (smart_dir == _HOV_TOP_RIGHT)
+          smart_dir = _HOV_TOP_LEFT;
+        else if (smart_dir == _HOV_TOP_LEFT)
+          smart_dir = _HOV_TOP_RIGHT;
+     }
+   snprintf(buf, sizeof(buf), "elm.swallow.slot.%s", smart_dir);
+   edje_object_part_swallow(wd->cov, buf, wd->smt_sub);
+}
+
+static void
+_elm_hover_sub_obj_placement_eval_cb(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
+{
+   _elm_hover_sub_obj_placement_eval(data);
+}
+
+static void
+_elm_hover_sub_obj_unparent(Evas_Object *obj)
+{
+   Widget_Data *wd;
+   Evas_Object *smt_sub;
+
+   wd = elm_widget_data_get(obj);
+   if (!wd) return;
+
+   smt_sub = wd->smt_sub;
+   elm_widget_sub_object_del(obj, wd->smt_sub);
+   evas_object_event_callback_del_full(smt_sub,
+                                       EVAS_CALLBACK_CHANGED_SIZE_HINTS,
+                                       _elm_hover_sub_obj_placement_eval_cb,
+                                       obj);
+   edje_object_part_unswallow(wd->cov, smt_sub);
+}
+
+EAPI const char *
+elm_hover_best_content_location_get(const Evas_Object *obj, Elm_Hover_Axis pref_axis)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype) NULL;
+
+   Evas_Coord spc_l, spc_r, spc_t, spc_b;
+   Widget_Data *wd;
+
+   wd = elm_widget_data_get(obj);
+   if (!wd)
+     return NULL;
+
+   _elm_hover_left_space_calc(wd, &spc_l, &spc_t, &spc_r, &spc_b);
+
+   if (pref_axis == ELM_HOVER_AXIS_HORIZONTAL)
+     {
+        if (spc_l < spc_r) return _HOV_RIGHT;
+        else return _HOV_LEFT;
+     }
+   else if (pref_axis == ELM_HOVER_AXIS_VERTICAL)
+     {
+        if (spc_t < spc_b) return _HOV_BOTTOM;
+        else return _HOV_TOP;
+     }
+
+   if (spc_l < spc_r)
+     {
+        if (spc_t > spc_r) return _HOV_TOP;
+        else if (spc_b > spc_r) return _HOV_BOTTOM;
+        return _HOV_RIGHT;
+     }
+   if (spc_t > spc_r) return _HOV_TOP;
+   else if (spc_b > spc_r) return _HOV_BOTTOM;
+   return _HOV_LEFT;
+}
+
+EAPI void
+elm_hover_dismiss(Evas_Object *obj)
+{
+   Widget_Data *wd;
+   ELM_CHECK_WIDTYPE(obj, widtype);
+   wd = elm_widget_data_get(obj);
+   if (!wd) return;
+
+   edje_object_signal_emit(wd->cov, "elm,action,dismiss", "");
+}
+
+static void
+_content_set_hook(Evas_Object *obj, const char *swallow, Evas_Object *content)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype);
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return;
+
+   if (!strcmp(swallow, "smart"))
+     {
+        if (wd->smt_sub != content)
+          {
+             _elm_hover_subs_del(wd);
+             wd->smt_sub = content;
+          }
+
+        if (content)
+          {
+             elm_widget_sub_object_add(obj, content);
+             evas_object_event_callback_add(wd->smt_sub,
+                                            EVAS_CALLBACK_CHANGED_SIZE_HINTS,
+                                            _elm_hover_sub_obj_placement_eval_cb,
+                                            obj);
+
+             _elm_hover_sub_obj_placement_eval(obj);
+          }
+
+        goto end;
+     }
+
+   if (wd->smt_sub)
+     {
+        evas_object_del(wd->smt_sub);
+        wd->smt_sub = NULL;
+     }
+
+   ELM_HOVER_PARTS_FOREACH
+     {
+        if (!strcmp(swallow, wd->subs[i].swallow))
+          {
+             if (content == wd->subs[i].obj)
+               return;
+             evas_object_del(wd->subs[i].obj);
+             wd->subs[i].obj = NULL;
+
+             if (content)
+               {
+                  char buf[1024];
+
+                  snprintf(buf, sizeof(buf), "elm.swallow.slot.%s", swallow);
+                  elm_widget_sub_object_add(obj, content);
+                  edje_object_part_swallow(wd->cov, buf, content);
+                  wd->subs[i].obj = content;
+               }
+             break;
+          }
+     }
+end:
+   _sizing_eval(obj);
+}
+
+static Evas_Object *
+_content_get_hook(const Evas_Object *obj, const char *swallow)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype) NULL;
+
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return NULL;
+
+   if (!strcmp(swallow, "smart"))
+     return wd->smt_sub;
+
+   ELM_HOVER_PARTS_FOREACH
+     if (!strcmp(swallow, wd->subs[i].swallow))
+       return wd->subs[i].obj;
+
+   return NULL;
+}
+
+static Evas_Object *
+_content_unset_hook(Evas_Object *obj, const char *swallow)
+{
+   ELM_CHECK_WIDTYPE(obj, widtype) NULL;
+
+   Widget_Data *wd = elm_widget_data_get(obj);
+   if (!wd) return NULL;
+
+   if (!strcmp(swallow, "smart"))
+     {
+        if (!wd->smt_sub) return NULL;
+        Evas_Object *content = wd->smt_sub;
+        _elm_hover_sub_obj_unparent(obj);
+        return content;
+     }
+
+   ELM_HOVER_PARTS_FOREACH
+     {
+        if (!strcmp(swallow, wd->subs[i].swallow))
+          {
+             if (!wd->subs[i].obj) return NULL;
+             Evas_Object *content = wd->subs[i].obj;
+             elm_widget_sub_object_del(obj, wd->subs[i].obj);
+             edje_object_part_unswallow(wd->cov, content);
+             return content;
+          }
+     }
+
+   return NULL;
+}