2 * @defgroup Hover Hover
5 * @image html img/widget/hover/preview-00.png
6 * @image latex img/widget/hover/preview-00.eps
8 * A Hover object will hover over its @p parent object at the @p target
9 * location. Anything in the background will be given a darker coloring to
10 * indicate that the hover object is on top (at the default theme). When the
11 * hover is clicked it is dismissed(hidden), if the contents of the hover are
12 * clicked that @b doesn't cause the hover to be dismissed.
14 * A Hover object has two parents. One parent that owns it during creation
15 * and the other parent being the one over which the hover object spans.
18 * @note The hover object will take up the entire space of @p target
21 * Elementary has the following styles for the hover widget:
25 * @li hoversel_vertical
27 * The following are the available position for content:
39 * Signals that you can add callbacks for are:
40 * @li "clicked" - the user clicked the empty space in the hover to dismiss
41 * @li "smart,changed" - a content object placed under the "smart"
42 * policy was replaced to a new slot direction.
44 * Default content parts of the hover widget that you can use for are:
56 * @note These content parts indicates the direction that the content will be
59 * All directions may have contents at the same time, except for
60 * "smart". This is a special placement hint and its use case
61 * depends of the calculations coming from
62 * elm_hover_best_content_location_get(). Its use is for cases when
63 * one desires only one hover content, but with a dynamic special
64 * placement within the hover area. The content's geometry, whenever
65 * it changes, will be used to decide on a best location, not
66 * extrapolating the hover's parent object view to show it in (still
67 * being the hover's target determinant of its medium part -- move and
68 * resize it to simulate finger sizes, for example). If one of the
69 * directions other than "smart" are used, a previously content set
70 * using it will be deleted, and vice-versa.
72 * Supported elm_object common APIs.
73 * @li @ref elm_object_signal_emit
74 * @li @ref elm_object_signal_callback_add
75 * @li @ref elm_object_signal_callback_del
76 * @li @ref elm_object_part_content_set
77 * @li @ref elm_object_part_content_get
78 * @li @ref elm_object_part_content_unset
80 * See @ref tutorial_hover for more information.
86 * @typedef Elm_Hover_Axis
88 * The orientation axis for the hover object
92 ELM_HOVER_AXIS_NONE, /**< ELM_HOVER_AXIS_NONE -- no preferred orientation */
93 ELM_HOVER_AXIS_HORIZONTAL, /**< ELM_HOVER_AXIS_HORIZONTAL -- horizontal */
94 ELM_HOVER_AXIS_VERTICAL, /**< ELM_HOVER_AXIS_VERTICAL -- vertical */
95 ELM_HOVER_AXIS_BOTH /**< ELM_HOVER_AXIS_BOTH -- both */
99 * @brief Adds a hover object to @p parent
101 * @param parent The parent object
102 * @return The hover object or NULL if one could not be created
106 EAPI Evas_Object *elm_hover_add(Evas_Object *parent);
109 * @brief Sets the target object for the hover.
111 * @param obj The hover object
112 * @param target The object to center the hover onto.
114 * This function will cause the hover to be centered on the target object.
118 EAPI void elm_hover_target_set(Evas_Object *obj, Evas_Object *target);
121 * @brief Gets the target object for the hover.
123 * @param obj The hover object
124 * @return The target object for the hover.
126 * @see elm_hover_target_set()
130 EAPI Evas_Object *elm_hover_target_get(const Evas_Object *obj);
133 * @brief Sets the parent object for the hover.
135 * @param obj The hover object
136 * @param parent The object to locate the hover over.
138 * This function will cause the hover to take up the entire space that the
139 * parent object fills.
143 EAPI void elm_hover_parent_set(Evas_Object *obj, Evas_Object *parent);
146 * @brief Gets the parent object for the hover.
148 * @param obj The hover object
149 * @return The parent object to locate the hover over.
151 * @see elm_hover_parent_set()
155 EAPI Evas_Object *elm_hover_parent_get(const Evas_Object *obj);
158 * @brief Returns the best swallow location for content in the hover.
160 * @param obj The hover object
161 * @param pref_axis The preferred orientation axis for the hover object to use
162 * @return The edje location to place content into the hover or @c
165 * Best is defined here as the location at which there is the most available
168 * @p pref_axis may be one of
169 * - @c ELM_HOVER_AXIS_NONE -- no preferred orientation
170 * - @c ELM_HOVER_AXIS_HORIZONTAL -- horizontal
171 * - @c ELM_HOVER_AXIS_VERTICAL -- vertical
172 * - @c ELM_HOVER_AXIS_BOTH -- both
174 * If ELM_HOVER_AXIS_HORIZONTAL is chosen the returned position will
175 * necessarily be along the horizontal axis("left" or "right"). If
176 * ELM_HOVER_AXIS_VERTICAL is chosen the returned position will necessarily
177 * be along the vertical axis("top" or "bottom"). Choosing
178 * ELM_HOVER_AXIS_BOTH or ELM_HOVER_AXIS_NONE has the same effect and the
179 * returned position may be in either axis.
181 * @see elm_object_part_content_set()
185 EAPI const char *elm_hover_best_content_location_get(const Evas_Object *obj, Elm_Hover_Axis pref_axis);
188 * @brief Dismiss a hover object
190 * @param obj The hover object
191 * Use this function to simulate clicking outside the hover to dismiss it.
192 * In this way, the hover will be hidden and the "clicked" signal will be emitted.
196 EAPI void elm_hover_dismiss(Evas_Object *obj);