efl/legacy/elementary/src/lib/elc_popup.h

270 lines
10 KiB
C

/**
* @defgroup Popup Popup
* @ingroup Elementary
*
* This widget is an enhancement of @ref Notify.
* In addition to Content area, there are two optional sections namely Title
* area and Action area.
*
* Popup Widget displays its content with a particular orientation in the parent
* area. This orientation can be one among top, center, bottom, left, top-left,
* top-right, bottom-left and bottom-right.
* Content part of Popup can be an Evas Object set by application or it can be
* Text set by application or set of items containing an icon and/or text.
* The content/item-list can be removed using elm_object_content_set with second
* parameter passed as NULL.
*
* Following figures shows the textual layouts of popup in which Title Area and
* Action area area are optional ones.
* Action area can have upto 3 buttons handled using elm_object common APIs
* mentioned below. If user wants to have more than 3 buttons then these buttons
* can be put inside the items of a list as content.
* User needs to handle the clicked signal of these action buttons if required.
* No event is processed by the widget automatically when clicked on these
* action buttons.
*
* <pre>
*
* |-------------------- | |----------------- ---| |----------------- ---|
* | Title Area | | Title Area | | Title Area |
* |Icon| Text | |Icon| Text | |Icon| Text |
* |------------------- -| |---------------- ----| |------------------ --|
* | Item 1 | | | | |
* |------------------- -| | | | |
* | Item 2 | | | | Description |
* |------------------ --| | Content | | |
* | Item 3 | | | | |
* |------------------ --| | | | |
* | . | |------------------ --| |------------------- -|
* | . | | Action Area | | Action Area |
* | . | | Btn1 |Btn2|. |Btn3 | | Btn1 |Btn2| |Btn3 |
* |------------------ --| |------------------- -| |------------------- -|
* | Item N | Content Based Layout Description based Layout
* |------------------ --|
* | Action Area |
* | Btn1 |Btn2|. |Btn3 |
* |------------------- -|
* Item Based Layout
*
* </pre>
*
* Timeout can be set on expiry of which popup instance hides and sends a smart
* signal "timeout" to the user.
* The visible region of popup is surrounded by a translucent region called
* Blocked Event area.
* By clicking on Blocked Event area, the signal "block,clicked" is sent to
* the application. This block event area can be avoided by using
* API elm_popup_allow_events_set.
* When gets hidden, popup does not get destroyed automatically, application
* should destroy the popup instance after use.
* To control the maximum height of the internal scroller for item, we use the
* height of the action area which is passed by theme based on the number of
* buttons currently set to popup.
*
* Signals that you can add callbacks for are:
* @li "timeout" - when ever popup is closed as a result of timeout.
* @li "block,clicked" - when ever user taps on Blocked Event area.
*
* Styles available for Popup
* @li "default"
*
* Default contents parts of the popup widget that you can use for are:
* @li "default" - The content of the popup
* @li "title,icon" - Title area's icon
* @li "button1" - 1st button of the action area
* @li "button2" - 2nd button of the action area
* @li "button3" - 3rd button of the action area
*
* Default text parts of the popup widget that you can use for are:
* @li "title,text" - This operates on Title area's label
* @li "default" - content-text set in the content area of the widget
*
* Default contents parts of the popup items that you can use for are:
* @li "default" -Item's icon
*
* Default text parts of the popup items that you can use for are:
* @li "default" - Item's label
*
* Supported elm_object common APIs.
* @li elm_object_part_content_set
* @li elm_object_part_content_get
* @li elm_object_part_content_unset
*
* Supported elm_object_item common APIs.
* @li elm_object_item_disabled_set
* @li elm_object_item_disabled_get
* @li elm_object_item_part_text_set
* @li elm_object_item_part_text_get
* @li elm_object_item_part_content_set
* @li elm_object_item_part_content_get
* @li elm_object_item_signal_emit
* @li elm_object_item_del
*
* Here are some sample code to illustrate Popup usage:
* @li @ref popup_example_01_c
* @li @ref popup_example_02_c
* @li @ref popup_example_03_c
*/
/**
* @brief Possible orient values for popup.
*
* These values should be used in conjunction to elm_popup_orient_set() to
* set the position in which the popup should appear(relative to its parent)
* and in conjunction with elm_popup_orient_get() to know where the popup
* is appearing.
*
* @ingroup Popup
*/
typedef enum
{
ELM_POPUP_ORIENT_TOP = 0, /**< Popup should appear in the top of parent, default */
ELM_POPUP_ORIENT_CENTER, /**< Popup should appear in the center of parent */
ELM_POPUP_ORIENT_BOTTOM, /**< Popup should appear in the bottom of parent */
ELM_POPUP_ORIENT_LEFT, /**< Popup should appear in the left of parent */
ELM_POPUP_ORIENT_RIGHT, /**< Popup should appear in the right of parent */
ELM_POPUP_ORIENT_TOP_LEFT, /**< Popup should appear in the top left of parent */
ELM_POPUP_ORIENT_TOP_RIGHT, /**< Popup should appear in the top right of parent */
ELM_POPUP_ORIENT_BOTTOM_LEFT, /**< Popup should appear in the bottom left of parent */
ELM_POPUP_ORIENT_BOTTOM_RIGHT, /**< Notify should appear in the bottom right of parent */
ELM_POPUP_ORIENT_LAST /**< Sentinel value, @b don't use */
} Elm_Popup_Orient;
/**
* @brief Adds a new Popup to the parent
*
* @param parent The parent object
* @return The new object or NULL if it cannot be created
*
* @ingroup Popup
*/
EAPI Evas_Object *elm_popup_add(Evas_Object *parent) EINA_ARG_NONNULL(1);
/**
* @brief Add a new item to a Popup object
*
* Both an item list and a content could not be set at the same time!
* once you add an item, the previous content will be removed.
*
* @param obj popup object
* @param icon Icon to be set on new item
* @param label The Label of the new item
* @param func Convenience function called when item selected
* @param data Data passed to @p func above
* @return A handle to the item added or @c NULL, on errors
*
* @ingroup Popup
* @warning When the first item is appended to popup object, any previous content
* of the content area is deleted. At a time, only one of content, content-text
* and item(s) can be there in a popup content area.
*/
EAPI Elm_Object_Item *elm_popup_item_append(Evas_Object *obj, const char *label, Evas_Object *icon, Evas_Smart_Cb func, const void *data) EINA_ARG_NONNULL(1);
/**
* @brief Sets the wrapping type of content text packed in content
* area of popup object.
*
* @param obj The Popup object
* @param wrap wrapping type of type Elm_Wrap_Type
*
* @ingroup Popup
* @see elm_popup_content_text_wrap_type_get()
*/
EAPI void elm_popup_content_text_wrap_type_set(Evas_Object *obj, Elm_Wrap_Type wrap) EINA_ARG_NONNULL(1);
/**
* @brief Returns the wrapping type of content text packed in content area of
* popup object.
*
* @param obj The Popup object
* @return wrap type of the content text
*
* @ingroup Popup
* @see elm_popup_content_text_wrap_type_set
*/
EAPI Elm_Wrap_Type elm_popup_content_text_wrap_type_get(Evas_Object *obj) EINA_ARG_NONNULL(1);
/**
* @brief Sets the orientation of the popup in the parent region
*
* @param obj The popup object
* @param orient the orientation of the popup
*
* Sets the position in which popup will appear in its parent
*
* @ingroup Popup
* @see @ref Elm_Popup_Orient for possible values.
*/
EAPI void elm_popup_orient_set(Evas_Object *obj, Elm_Popup_Orient orient) EINA_ARG_NONNULL(1);
/**
* @brief Returns the orientation of Popup
*
* @param obj The popup object
* @return the orientation of the popup
*
* @ingroup Popup
* @see elm_popup_orient_set()
* @see Elm_Popup_Orient
*/
EAPI Elm_Popup_Orient elm_popup_orient_get(Evas_Object *obj) EINA_ARG_NONNULL(1);
/**
* @brief Sets a timeout to hide popup automatically
*
* @param obj The popup object
* @param timeout The timeout in seconds
*
* This function sets a timeout and starts the timer controlling when the
* popup is hidden. Since calling evas_object_show() on a popup restarts
* the timer controlling when it is hidden, setting this before the
* popup is shown will in effect mean starting the timer when the popup is
* shown. Smart signal "timeout" is called afterwards which can be handled
* if needed.
*
* @note Set a value <= 0.0 to disable a running timer.
*
* @note If the value > 0.0 and the popup is previously visible, the
* timer will be started with this value, canceling any running timer.
* @ingroup Popup
*/
EAPI void elm_popup_timeout_set(Evas_Object *obj, double timeout) EINA_ARG_NONNULL(1);
/**
* @brief Returns the timeout value set to the popup (in seconds)
*
* @param obj The popup object
* @return the timeout value
*
* @ingroup Popup
* @see elm_popup_timeout_set()
*/
EAPI double elm_popup_timeout_get(Evas_Object *obj) EINA_ARG_NONNULL(1);
/**
* @brief Sets whether events should be passed to by a click outside.
*
* @param obj The popup object
* @param allow EINA_TRUE Events are passed to lower objects, else not
*
* Enabling allow event will remove the Blocked event area and events will
* pass to the lowever layer objects otherwise they are blocked.
*
* @ingroup Popup
* @see elm_popup_allow_events_get()
* @note The default value is EINA_FALSE.
*/
EAPI void elm_popup_allow_events_set(Evas_Object *obj, Eina_Bool allow);
/**
* @brief Returns value indicating whether allow event is enabled or not
*
* @param obj The popup object
* @return EINA_FALSE if Blocked event area is present else EINA_TRUE
*
* @ingroup Popup
* @see elm_popup_allow_events_set()
* @note By default the Blocked event area is present
*/
EAPI Eina_Bool elm_popup_allow_events_get(Evas_Object *obj);