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/**
* @defgroup Hover Hover
* @ingroup Elementary
*
* @image html img/widget/hover/preview-00.png
* @image latex img/widget/hover/preview-00.eps
*
* A Hover object will hover over its @p parent object at the @p target
* location. Anything in the background will be given a darker coloring to
* indicate that the hover object is on top (at the default theme). When the
* hover is clicked it is dismissed(hidden), if the contents of the hover are
* clicked that @b doesn't cause the hover to be dismissed.
*
* A Hover object has two parents. One parent that owns it during creation
* and the other parent being the one over which the hover object spans.
*
*
* @note The hover object will take up the entire space of @p target
* object.
*
* Elementary has the following styles for the hover widget:
* @li default
* @li popout
* @li menu
* @li hoversel_vertical
*
* The following are the available position for content:
* @li left
* @li top-left
* @li top
* @li top-right
* @li right
* @li bottom-right
* @li bottom
* @li bottom-left
* @li middle
* @li smart
*
* Signals that you can add callbacks for are:
* @li "clicked" - the user clicked the empty space in the hover to dismiss
* @li "smart,changed" - a content object placed under the "smart"
* policy was replaced to a new slot direction.
*
* Default content parts of the hover widget that you can use for are:
* @li "left"
* @li "top-left"
* @li "top"
* @li "top-right"
* @li "right"
* @li "bottom-right"
* @li "bottom"
* @li "bottom-left"
* @li "middle"
* @li "smart"
*
* @note These content parts indicates the direction that the content will be
* displayed
*
* All directions may have contents at the same time, except for
* "smart". This is a special placement hint and its use case
* depends of the calculations coming from
* elm_hover_best_content_location_get(). Its use is for cases when
* one desires only one hover content, but with a dynamic special
* placement within the hover area. The content's geometry, whenever
* it changes, will be used to decide on a best location, not
* extrapolating the hover's parent object view to show it in (still
* being the hover's target determinant of its medium part -- move and
* resize it to simulate finger sizes, for example). If one of the
* directions other than "smart" are used, a previously content set
* using it will be deleted, and vice-versa.
*
* Supported elm_object common APIs.
* @li @ref elm_object_signal_emit
* @li @ref elm_object_signal_callback_add
* @li @ref elm_object_signal_callback_del
* @li @ref elm_object_part_content_set
* @li @ref elm_object_part_content_get
* @li @ref elm_object_part_content_unset
*
* See @ref tutorial_hover for more information.
*
* @{
*/
/**
* @typedef Elm_Hover_Axis
*
* The orientation axis for the hover object
*/
typedef enum
{
ELM_HOVER_AXIS_NONE, /**< ELM_HOVER_AXIS_NONE -- no preferred orientation */
ELM_HOVER_AXIS_HORIZONTAL, /**< ELM_HOVER_AXIS_HORIZONTAL -- horizontal */
ELM_HOVER_AXIS_VERTICAL, /**< ELM_HOVER_AXIS_VERTICAL -- vertical */
ELM_HOVER_AXIS_BOTH /**< ELM_HOVER_AXIS_BOTH -- both */
} Elm_Hover_Axis;
/**
* @brief Adds a hover object to @p parent
*
* @param parent The parent object
* @return The hover object or NULL if one could not be created
*
* @ingroup Hover
*/
EAPI Evas_Object *elm_hover_add(Evas_Object *parent);
/**
* @brief Sets the target object for the hover.
*
* @param obj The hover object
* @param target The object to center the hover onto.
*
* This function will cause the hover to be centered on the target object.
*
* @ingroup Hover
*/
EAPI void elm_hover_target_set(Evas_Object *obj, Evas_Object *target);
/**
* @brief Gets the target object for the hover.
*
* @param obj The hover object
* @return The target object for the hover.
*
* @see elm_hover_target_set()
*
* @ingroup Hover
*/
EAPI Evas_Object *elm_hover_target_get(const Evas_Object *obj);
/**
* @brief Sets the parent object for the hover.
*
* @param obj The hover object
* @param parent The object to locate the hover over.
*
* This function will cause the hover to take up the entire space that the
* parent object fills.
*
* @ingroup Hover
*/
EAPI void elm_hover_parent_set(Evas_Object *obj, Evas_Object *parent);
/**
* @brief Gets the parent object for the hover.
*
* @param obj The hover object
* @return The parent object to locate the hover over.
*
* @see elm_hover_parent_set()
*
* @ingroup Hover
*/
EAPI Evas_Object *elm_hover_parent_get(const Evas_Object *obj);
/**
* @brief Returns the best swallow location for content in the hover.
*
* @param obj The hover object
* @param pref_axis The preferred orientation axis for the hover object to use
* @return The edje location to place content into the hover or @c
* NULL, on errors.
*
* Best is defined here as the location at which there is the most available
* space.
*
* @p pref_axis may be one of
* - @c ELM_HOVER_AXIS_NONE -- no preferred orientation
* - @c ELM_HOVER_AXIS_HORIZONTAL -- horizontal
* - @c ELM_HOVER_AXIS_VERTICAL -- vertical
* - @c ELM_HOVER_AXIS_BOTH -- both
*
* If ELM_HOVER_AXIS_HORIZONTAL is chosen the returned position will
* necessarily be along the horizontal axis("left" or "right"). If
* ELM_HOVER_AXIS_VERTICAL is chosen the returned position will necessarily
* be along the vertical axis("top" or "bottom"). Choosing
* ELM_HOVER_AXIS_BOTH or ELM_HOVER_AXIS_NONE has the same effect and the
* returned position may be in either axis.
*
* @see elm_object_part_content_set()
*
* @ingroup Hover
*/
EAPI const char *elm_hover_best_content_location_get(const Evas_Object *obj, Elm_Hover_Axis pref_axis);
/**
* @brief Dismiss a hover object
*
* @param obj The hover object
* Use this function to simulate clicking outside the hover to dismiss it.
* In this way, the hover will be hidden and the "clicked" signal will be emitted.
*
* @ingroup Hover
*/
EAPI void elm_hover_dismiss(Evas_Object *obj);
/**
* @}
*/
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