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

747 lines
26 KiB
C

/**
* @typedef Elm_Object_Item
* An Elementary Object item handle.
* @ingroup General
*/
typedef struct _Elm_Object_Item Elm_Object_Item;
/**
* @typedef Elm_Object_Item_Signal_Cb
*
* Elm_Object_Item Signal Callback functions' prototype definition. @c data
* will have the auxiliary data pointer at the time the callback registration.
* @c it will be a pointer the Elm_Object_Item that have the edje object where
* the signal comes from. @c emission will identify the exact signal's emission
* string and @c source the exact signal's source one.
*
* @see elm_object_item_signal_callback_add()
* @since 1.8
*
* @ingroup General
*/
typedef void (*Elm_Object_Item_Signal_Cb)(void *data, Elm_Object_Item *it, const char *emission, const char *source);
/**
* Get the widget object's handle which contains a given item
*
* @param it The Elementary object item
* @return The widget object
*
* @note This returns the widget object itself that an item belongs to.
* @note Every elm_object_item supports this API
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_widget_get(const Elm_Object_Item *it);
/**
* Set a content of an object item
*
* @param it The Elementary object item
* @param part The content part name to set (NULL for the default content)
* @param content The new content of the object item
*
* This sets a new object to an item as a content object. If any object was
* already set as a content object in the same part, previous object will be
* deleted automatically.
*
* @note Elementary object items may have many contents
*
* @ingroup General
*/
EAPI void elm_object_item_part_content_set(Elm_Object_Item *it, const char *part, Evas_Object *content);
#define elm_object_item_content_set(it, content) elm_object_item_part_content_set((it), NULL, (content))
/**
* Get a content of an object item
*
* @param it The Elementary object item
* @param part The content part name to unset (NULL for the default content)
* @return content of the object item or NULL for any error
*
* @note Elementary object items may have many contents
*
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_part_content_get(const Elm_Object_Item *it, const char *part);
#define elm_object_item_content_get(it) elm_object_item_part_content_get((it), NULL)
/**
* Unset a content of an object item
*
* @param it The Elementary object item
* @param part The content part name to unset (NULL for the default content)
*
* @note Elementary object items may have many contents
*
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_part_content_unset(Elm_Object_Item *it, const char *part);
#define elm_object_item_content_unset(it) elm_object_item_part_content_unset((it), NULL)
/**
* Set a label of an object item
*
* @param it The Elementary object item
* @param part The text part name to set (NULL for the default label)
* @param label The new text of the label
*
* @note Elementary object items may have many labels
*
* @ingroup General
*/
EAPI void elm_object_item_part_text_set(Elm_Object_Item *it, const char *part, const char *label);
/**
* Macro to set a label of an object item.
*
* @param it The Elementary object item.
* @param label The new text of the label.
*
* @note Elementary object items may have many labels.
*
* @ingroup General
*/
#define elm_object_item_text_set(it, label) elm_object_item_part_text_set((it), NULL, (label))
/**
* Get a label of an object item
*
* @param it The Elementary object item
* @param part The text part name to get (NULL for the default label)
* @return text of the label or NULL for any error
*
* @note Elementary object items may have many labels
*
* @ingroup General
*/
EAPI const char *elm_object_item_part_text_get(const Elm_Object_Item *it, const char *part);
#define elm_object_item_text_get(it) elm_object_item_part_text_get((it), NULL)
/**
* Set the text for an object item's part, marking it as translatable.
*
* The string to set as @p text must be the original one. Do not pass the
* return of @c gettext() here. Elementary will translate the string
* internally and set it on the object item using
* elm_object_item_part_text_set(), also storing the original string so that it
* can be automatically translated when the language is changed with
* elm_language_set(). The @p domain will be stored along to find the
* translation in the correct catalog. It can be NULL, in which case it will use
* whatever domain was set by the application with @c textdomain(). This is
* useful in case you are building a library on top of Elementary that will have
* its own translatable strings, that should not be mixed with those of programs
* using the library.
*
* @param it The object item containing the text part
* @param part The name of the part to set
* @param domain The translation domain to use
* @param text The original, non-translated text to set
*
* @ingroup General
* @since 1.8
*/
EAPI void elm_object_item_domain_translatable_part_text_set(Elm_Object_Item *it, const char *part, const char *domain, const char *text);
#define elm_object_item_domain_translatable_text_set(it, domain, text) elm_object_item_domain_translatable_part_text_set((it), NULL, (domain), (text))
#define elm_object_item_translatable_text_set(it, text) elm_object_item_domain_translatable_part_text_set((it), NULL, NULL, (text))
#define elm_object_item_translatable_part_text_set(it, part, text) elm_object_item_domain_translatable_part_text_set((it), (part), NULL, (text))
/**
* Get the original string set as translatable for an object item.
*
* When setting translated strings, the function elm_object_item_part_text_get()
* will return the translation returned by @c gettext(). To get the original
* string use this function.
*
* @param it The object item.
* @param part The name of the part that was set
*
* @return The original, untranslated string
*
* @ingroup General
* @since 1.8
*/
EAPI const char *elm_object_item_translatable_part_text_get(const Elm_Object_Item *it, const char *part);
#define elm_object_item_translatable_text_get(it) elm_object_item_translatable_part_text_get((it), NULL)
/**
* Mark the part text to be translatable or not.
*
* Once you mark the part text to be translatable, the text will be translated
* internally regardless of elm_object_item_part_text_set() and
* elm_object_item_domain_translatable_part_text_set(). In other case, if you
* set the Elementary policy that all text will be translatable in default, you
* can set the part text to not be translated by calling this API.
*
* @param it The object item containing the text part
* @param part The part name of the translatable text
* @param domain The translation domain to use
* @param translatable @c EINA_TRUE, the part text will be translated
* internally. @c EINA_FALSE, otherwise.
*
* @see elm_object_item_domain_translatable_part_text_set()
* @see elm_object_item_part_text_set()
* @see elm_policy()
*
* @since 1.8
*
* @ingroup General
*/
EAPI void elm_object_item_domain_part_text_translatable_set(Elm_Object_Item *it, const char *part, const char *domain, Eina_Bool translatable);
#define elm_object_item_part_text_translatable_set(it, part, translatable) elm_object_item_domain_part_text_translatable_set((it), (part), NULL, (translatable))
#define elm_object_item_domain_text_translatable_set(it, domain, translatable) elm_object_item_domain_part_text_translatable_set((it), NULL, (domain), (translatable))
/**
* Set the text to read out when in accessibility mode
*
* @param it The object item which is to be described
* @param txt The text that describes the widget to people with poor or no vision
*
* @ingroup General
*/
EAPI void elm_object_item_access_info_set(Elm_Object_Item *it, const char *txt);
/**
* @brief Register object item as an accessible object.
* @since 1.8
*
* @param item The elementary object item
* @return Accessible object of the object item or NULL for any error
*
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_access_register(Elm_Object_Item *item);
/**
* @brief Unregister accessible object of the object item.
* @since 1.8
*
* @param item The elementary object item
*
* @ingroup General
*/
EAPI void elm_object_item_access_unregister(Elm_Object_Item *item);
/**
* @brief Get an accessible object of the object item.
* @since 1.8
*
* @param item The elementary object item
* @return Accessible object of the object item or NULL for any error
*
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_access_object_get(const Elm_Object_Item *item);
/**
* @brief Set highlight order
* @since 1.8
*
* @param item The container object item
* @param objs Order of objects to pass highlight
*
* @ingroup General
*/
EAPI void elm_object_item_access_order_set(Elm_Object_Item *item, Eina_List *objs);
/**
* @brief Get highlight order
* @since 1.8
*
* @param item The container object item
* @return Order of objects to pass highlight
*
* @ingroup General
*/
EAPI const Eina_List *elm_object_item_access_order_get(const Elm_Object_Item *item);
/**
* @brief Unset highlight order
* @since 1.8
*
* @param item The container object item
*
* @ingroup General
*/
EAPI void elm_object_item_access_order_unset(Elm_Object_Item *item);
/**
* Get the data associated with an object item
* @param it The Elementary object item
* @return The data associated with @p it
*
* @note Every elm_object_item supports this API
* @ingroup General
*/
EAPI void *elm_object_item_data_get(const Elm_Object_Item *it);
/**
* Set the data associated with an object item
* @param it The Elementary object item
* @param data The data to be associated with @p it
*
* @note Every elm_object_item supports this API
* @ingroup General
*/
EAPI void elm_object_item_data_set(Elm_Object_Item *it, void *data);
/**
* Send a signal to the edje object of the widget item.
*
* This function sends a signal to the edje object of the obj item. An
* edje program can respond to a signal by specifying matching
* 'signal' and 'source' fields.
*
* @param it The Elementary object item
* @param emission The signal's name.
* @param source The signal's source.
* @ingroup General
*/
EAPI void elm_object_item_signal_emit(Elm_Object_Item *it, const char *emission, const char *source);
/**
* Add a callback for a signal emitted by object item edje.
*
* This function connects a callback function to a signal emitted by the
* edje object of the object item.
* Globs can occur in either the emission or source name.
*
* @param it The elementary object item
* @param emission The signal's name.
* @param source The signal's source.
* @param func The callback function to be executed when the signal is
* emitted.
* @param data A pointer to data to pass to the callback function.
* @since 1.8
*
* @ingroup General
*/
EAPI void elm_object_item_signal_callback_add(Elm_Object_Item *it, const char *emission, const char *source, Elm_Object_Item_Signal_Cb func, void *data);
/**
* Remove a signal-triggered callback from a object item edje object.
*
* @param it The elementary object item
* @param emission The signal's name.
* @param source The signal's source.
* @param func The callback function to be executed when the signal is
* emitted.
* @return The data pointer of the signal callback or @c NULL, on
* errors.
*
* This function removes the @b last callback, previously attached to
* a signal emitted by an underlying Edje object of @a it, whose
* parameters @a emission, @a source and @c func match exactly with
* those passed to a previous call to
* elm_object_item_signal_callback_add(). The data pointer that was passed
* to this call will be returned.
*
* @see elm_object_item_signal_callback_add()
* @since 1.8
*
* @ingroup General
*/
EAPI void *elm_object_item_signal_callback_del(Elm_Object_Item *it, const char *emission, const char *source, Elm_Object_Item_Signal_Cb func);
/**
* Set the disabled state of an widget item.
*
* @param it The Elementary object item
* @param disabled The state to put in in: @c EINA_TRUE for
* disabled, @c EINA_FALSE for enabled
*
* Elementary object item can be @b disabled, in which state they won't
* receive input and, in general, will be themed differently from
* their normal state, usually greyed out. Useful for contexts
* where you don't want your users to interact with some of the
* parts of you interface.
*
* This sets the state for the widget item, either disabling it or
* enabling it back.
*
* @ingroup Styles
*/
EAPI void elm_object_item_disabled_set(Elm_Object_Item *it, Eina_Bool disabled);
/**
* Get the disabled state of an widget item.
*
* @param it The Elementary object item
* @return @c EINA_TRUE, if the widget item is disabled, @c EINA_FALSE
* if it's enabled (or on errors)
*
* This gets the state of the widget, which might be enabled or disabled.
*
* @ingroup Styles
*/
EAPI Eina_Bool elm_object_item_disabled_get(const Elm_Object_Item *it);
/**
* @brief Set the function to be called when an item from the widget is
* freed.
*
* @param it The item to set the callback on
* @param del_cb The function called
*
* That function will receive these parameters:
* @li void * item data
* @li Evas_Object * widget object
* @li Elm_Object_Item * widget item
*
* @note Every elm_object_item supports this API
*
* @see elm_object_item_del()
* @ingroup General
*/
EAPI void elm_object_item_del_cb_set(Elm_Object_Item *it, Evas_Smart_Cb del_cb);
/**
* Delete the given item.
*
* @param it The item to be deleted.
*
* @ingroup General
*/
EAPI void elm_object_item_del(Elm_Object_Item *it);
/**
* Set the text to be shown in a given object item's tooltips.
*
* @param it Target item.
* @param text The text to set in the content.
*
* Setup the text as tooltip to object. The item can have only one tooltip,
* so any previous tooltip data - set with this function or
* elm_object_item_tooltip_content_cb_set() - is removed.
*
* @see elm_object_tooltip_text_set() for more details.
*
* @ingroup General
*/
EAPI void elm_object_item_tooltip_text_set(Elm_Object_Item *it, const char *text);
/**
* @brief Disable size restrictions on an object's tooltip
* @param it The tooltip's anchor object
* @param disable If EINA_TRUE, size restrictions are disabled
* @return EINA_FALSE on failure, EINA_TRUE on success
*
* This function allows a tooltip to expand beyond its parent window's canvas.
* It will instead be limited only by the size of the display.
*/
EAPI Eina_Bool elm_object_item_tooltip_window_mode_set(Elm_Object_Item *it, Eina_Bool disable);
/**
* @brief Retrieve size restriction state of an object's tooltip
* @param it The tooltip's anchor object
* @return If EINA_TRUE, size restrictions are disabled
*
* This function returns whether a tooltip is allowed to expand beyond
* its parent window's canvas.
* It will instead be limited only by the size of the display.
*/
EAPI Eina_Bool elm_object_item_tooltip_window_mode_get(const Elm_Object_Item *it);
/**
* Set the content to be shown in the tooltip item.
*
* Setup the tooltip to item. The item can have only one tooltip,
* so any previous tooltip data is removed. @p func(with @p data) will
* be called every time that need show the tooltip and it should
* return a valid Evas_Object. This object is then managed fully by
* tooltip system and is deleted when the tooltip is gone.
*
* @param it the object item being attached a tooltip.
* @param func the function used to create the tooltip contents.
* @param data what to provide to @a func as callback data/context.
* @param del_cb called when data is not needed anymore, either when
* another callback replaces @a func, the tooltip is unset with
* elm_object_item_tooltip_unset() or the owner @a item
* dies. This callback receives as the first parameter the
* given @a data, and @c event_info is the item.
*
* @see elm_object_tooltip_content_cb_set() for more details.
*
* @ingroup General
*/
EAPI void elm_object_item_tooltip_content_cb_set(Elm_Object_Item *it, Elm_Tooltip_Item_Content_Cb func, const void *data, Evas_Smart_Cb del_cb);
/**
* Unset tooltip from item.
*
* @param it object item to remove previously set tooltip.
*
* Remove tooltip from item. The callback provided as del_cb to
* elm_object_item_tooltip_content_cb_set() will be called to notify
* it is not used anymore.
*
* @see elm_object_tooltip_unset() for more details.
* @see elm_object_item_tooltip_content_cb_set()
*
* @ingroup General
*/
EAPI void elm_object_item_tooltip_unset(Elm_Object_Item *it);
/**
* Sets a different style for this item tooltip.
*
* @note before you set a style you should define a tooltip with
* elm_object_item_tooltip_content_cb_set() or
* elm_object_item_tooltip_text_set()
*
* @param it object item with tooltip already set.
* @param style the theme style to use (default, transparent, ...)
*
* @see elm_object_tooltip_style_set() for more details.
*
* @ingroup General
*/
EAPI void elm_object_item_tooltip_style_set(Elm_Object_Item *it, const char *style);
/**
* Get the style for this item tooltip.
*
* @param it object item with tooltip already set.
* @return style the theme style in use, defaults to "default". If the
* object does not have a tooltip set, then NULL is returned.
*
* @see elm_object_tooltip_style_get() for more details.
* @see elm_object_item_tooltip_style_set()
*
* @ingroup General
*/
EAPI const char *elm_object_item_tooltip_style_get(const Elm_Object_Item *it);
/**
* Set the type of mouse pointer/cursor decoration to be shown,
* when the mouse pointer is over the given item
*
* @param it item to customize cursor on
* @param cursor the cursor type's name
*
* This function works analogously as elm_object_cursor_set(), but
* here the cursor's changing area is restricted to the item's
* area, and not the whole widget's. Note that that item cursors
* have precedence over widget cursors, so that a mouse over an
* item with custom cursor set will always show @b that cursor.
*
* If this function is called twice for an object, a previously set
* cursor will be unset on the second call.
*
* @see elm_object_cursor_set()
* @see elm_object_item_cursor_get()
* @see elm_object_item_cursor_unset()
*
* @ingroup General
*/
EAPI void elm_object_item_cursor_set(Elm_Object_Item *it, const char *cursor);
/*
* Get the type of mouse pointer/cursor decoration set to be shown,
* when the mouse pointer is over the given item
*
* @param it item with custom cursor set
* @return the cursor type's name or @c NULL, if no custom cursors
* were set to @p item (and on errors)
*
* @see elm_object_cursor_get()
* @see elm_object_item_cursor_set()
* @see elm_object_item_cursor_unset()
*
* @ingroup General
*/
EAPI const char *elm_object_item_cursor_get(const Elm_Object_Item *it);
/**
* Unset any custom mouse pointer/cursor decoration set to be
* shown, when the mouse pointer is over the given
* item, thus making it show the @b default cursor again.
*
* @param it the item
*
* Use this call to undo any custom settings on this item's cursor
* decoration, bringing it back to defaults (no custom style set).
*
* @see elm_object_cursor_unset()
* @see elm_object_item_cursor_set()
*
* @ingroup General
*/
EAPI void elm_object_item_cursor_unset(Elm_Object_Item *it);
/**
* Set a different @b style for a given custom cursor set for an
* item.
*
* @param it item with custom cursor set
* @param style the <b>theme style</b> to use (e.g. @c "default",
* @c "transparent", etc)
*
* This function only makes sense when one is using custom mouse
* cursor decorations <b>defined in a theme file</b>, which can have,
* given a cursor name/type, <b>alternate styles</b> on it. It
* works analogously as elm_object_cursor_style_set(), but here
* applies only to item objects.
*
* @warning Before you set a cursor style you should have defined a
* custom cursor previously on the item, with
* elm_object_item_cursor_set()
*
* @see elm_object_item_cursor_engine_only_set()
* @see elm_object_item_cursor_style_get()
*
* @ingroup General
*/
EAPI void elm_object_item_cursor_style_set(Elm_Object_Item *it, const char *style);
/**
* Get the current @b style set for a given item's custom
* cursor
*
* @param it item with custom cursor set.
* @return style the cursor style in use. If the object does not
* have a cursor set, then @c NULL is returned.
*
* @see elm_object_item_cursor_style_set() for more details
*
* @ingroup General
*/
EAPI const char *elm_object_item_cursor_style_get(const Elm_Object_Item *it);
/**
* Set if the (custom)cursor for a given item should be
* searched in its theme, also, or should only rely on the
* rendering engine.
*
* @param it item with custom (custom) cursor already set on
* @param engine_only Use @c EINA_TRUE to have cursors looked for
* only on those provided by the rendering engine, @c EINA_FALSE to
* have them searched on the widget's theme, as well.
*
* @note This call is of use only if you've set a custom cursor
* for items, with elm_object_item_cursor_set().
*
* @note By default, cursors will only be looked for between those
* provided by the rendering engine.
*
* @ingroup General
*/
EAPI void elm_object_item_cursor_engine_only_set(Elm_Object_Item *it, Eina_Bool engine_only);
/**
* Get if the (custom) cursor for a given item is being
* searched in its theme, also, or is only relying on the rendering
* engine.
*
* @param it an object item
* @return @c EINA_TRUE, if cursors are being looked for only on
* those provided by the rendering engine, @c EINA_FALSE if they
* are being searched on the widget's theme, as well.
*
* @see elm_object_item_cursor_engine_only_set(), for more details
*
* @ingroup General
*/
EAPI Eina_Bool elm_object_item_cursor_engine_only_get(const Elm_Object_Item *it);
/**
* This returns track object of the item.
*
* @param it The Elementary Object Item to be tracked.
* @return The track object.
*
* @note This gets a rectangle object that represents the object item's internal
* object. If you wanna check the geometry, visibility of the item, you
* can call the evas apis such as evas_object_geometry_get(),
* evas_object_visible_get() to the track object. Note that all of the
* widget items may/may not have the internal object so this api may
* return @c NULL if the widget item doesn't have it. Additionally, the
* widget item is managed/controlled by the widget, the widget item could
* be changed(moved, resized even deleted) anytime by it's own widget's
* decision. So please dont' change the track object as well as don't
* keep the track object in your side as possible but get the track object
* at the moment you need to refer. Otherwise, you need to add some
* callbacks to the track object to track it's attributes changes.
*
* @warning After use the track object, please call the
* elm_object_item_untrack() paired to elm_object_item_track()
* definitely to free the track object properly. Don't delete the
* track object.
*
* @see elm_object_item_untrack()
* @see elm_object_item_track_get()
*
* @since 1.8
*
* @ingroup General
*/
EAPI Evas_Object *elm_object_item_track(Elm_Object_Item *it);
/**
* This retrieve the track object of the item.
*
* @param it The Elementary Object Item that returned track object.
*
* @note This retrieves the track object that was returned from
* elm_object_item_track().
*
* @see elm_object_item_track()
* @see elm_object_item_track_get()
*
* @since 1.8
*
* @ingroup General
*/
EAPI void elm_object_item_untrack(Elm_Object_Item *it);
/**
* Get the track object reference count.
*
* @param it The Elementary Object Item that returned track object.
*
* @note This gets the reference count for the track object. Whenever you call
* the elm_object_item_track(), the reference count will be increased by
* one. Likely the referece count will be decreased again when you call
* the elm_object_item_untrack(). Unless the reference count reaches to
* zero, the track object won't be deleted. So please be sure to call
* elm_object_item_untrack() paired to the elm_object_item_track() call
* count.
*
* @see elm_object_item_track()
* @see elm_object_item_track_get()
*
* @since 1.8
*
* @ingroup General
*/
EAPI int elm_object_item_track_get(const Elm_Object_Item *it);
/**
* Set a style of an object item
*
* @param it The Elementary object item
* @param part The style
*
* @ingroup General
*/
EAPI void elm_object_item_style_set(Elm_Object_Item *it, const char *part);
/**
* Get the style of an object item
*
* @param it The Elementary object item
* @return The style of object item
*
* @ingroup General
*/
EAPI const char *elm_object_item_style_get(Elm_Object_Item *it);