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