2019-03-05 14:00:37 -08:00
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#ifndef _ELM_SLIDESHOW_EO_H_
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#define _ELM_SLIDESHOW_EO_H_
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#ifndef _ELM_SLIDESHOW_EO_CLASS_TYPE
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#define _ELM_SLIDESHOW_EO_CLASS_TYPE
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typedef Eo Elm_Slideshow;
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#endif
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#ifndef _ELM_SLIDESHOW_EO_TYPES
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#define _ELM_SLIDESHOW_EO_TYPES
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#endif
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/** Elementary slideshow class
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*
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* @ingroup Elm_Slideshow
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*/
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#define ELM_SLIDESHOW_CLASS elm_slideshow_class_get()
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efl: make all _class_get() functions const
please note, not the return type, but the function.
When appending __attribute__((const)) to a function, the compiler is
told that its enough to call this function once in a function.
This is quite often happening when we are efl_data_scope_get and
efl_super in a function that is different from a implemented function.
The compiler now starts to remove the calls that aggressivly that we
need to ensure that these calls are not removed, which means, the static
function calls, and the eo init are now checking the return value of
these functions, to ensure that they are called.
Please note that you now have to be carefull when your app calls
eo_shutdown, if it does so, you *must* call it at the end of a function,
or never call class_get after that anymore.
Overall this improves elm test runs 0.1s which is fair i guess, the main
thing that is faster is textrendering, where is also the point where
this is the most beneficial.
Please note, this replaces 42 occurences of double _class_get() ... THAT
is a sign!
Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Reviewed-by: Daniel Kolesa <daniel@octaforge.org>
Differential Revision: https://phab.enlightenment.org/D12057
2020-07-16 03:39:23 -07:00
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EWAPI const Efl_Class *elm_slideshow_class_get(void) EINA_CONST;
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2019-03-05 14:00:37 -08:00
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/**
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* @brief Set the number of items to cache, on a given slideshow widget, after
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* the current item.
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*
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* The default value for this property is 2. See @ref Slideshow_Caching
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* "slideshow caching" for more details.
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*
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* @param[in] obj The object.
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* @param[in] count Number of items to cache after the current one.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_cache_after_set(Eo *obj, int count);
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/**
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* @brief Get the number of items to cache, on a given slideshow widget, after
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* the current item.
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*
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* @param[in] obj The object.
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*
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* @return Number of items to cache after the current one.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI int elm_obj_slideshow_cache_after_get(const Eo *obj);
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/**
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* @brief Set the number of items to cache, on a given slideshow widget, before
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* the current item.
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*
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* The default value for this property is 2. See @ref Slideshow_Caching
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* "slideshow caching" for more details.
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*
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* @param[in] obj The object.
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* @param[in] count Number of items to cache before the current one.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_cache_before_set(Eo *obj, int count);
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/**
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* @brief Get the number of items to cache, on a given slideshow widget, before
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* the current item.
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*
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* @param[in] obj The object.
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*
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* @return Number of items to cache before the current one.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI int elm_obj_slideshow_cache_before_get(const Eo *obj);
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/**
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* @brief Set the current slide layout in use for a given slideshow widget
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*
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* If @c layout is implemented in @c obj's theme (i.e., is contained in the
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* list returned by elm_slideshow_layouts_get()), this new images layout will
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* be used on the widget.
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*
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* See @ref elm_obj_slideshow_layouts_get for more details.
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*
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* @param[in] obj The object.
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* @param[in] layout The new layout's name string.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_layout_set(Eo *obj, const char *layout);
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/**
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* @brief Get the current slide layout in use for a given slideshow widget.
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*
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* @param[in] obj The object.
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*
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* @return The new layout's name string.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI const char *elm_obj_slideshow_layout_get(const Eo *obj);
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/**
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* @brief Set the current slide transition/effect in use for a given slideshow
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* widget.
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*
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* If @c transition is implemented in @c obj's theme (i.e., is contained in the
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* list returned by @ref elm_obj_slideshow_transitions_get), this new sliding
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* effect will be used on the widget.
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*
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* @param[in] obj The object.
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* @param[in] transition The new transition's name string.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_transition_set(Eo *obj, const char *transition);
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/**
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* @brief Get the current slide transition/effect in use for a given slideshow
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* widget.
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*
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* @param[in] obj The object.
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*
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* @return The new transition's name string.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI const char *elm_obj_slideshow_transition_get(const Eo *obj);
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/**
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* @brief Set if the slideshow items should be displayed cyclically or not, so
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* when the end is reached it will restart from the first item.
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*
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* @note This will affect the "automatic" slidshow behaviour and the
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* @ref elm_obj_slideshow_next and @ref elm_obj_slideshow_previous functions as
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* well.
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*
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* @param[in] obj The object.
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* @param[in] loop Use @c true to make it cycle through items or @c false for
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* it to stop at the end of @c obj's internal list of items.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_items_loop_set(Eo *obj, Eina_Bool loop);
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/**
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* @brief Get if, after a slideshow is started, for a given slideshow widget,
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* its items are to be displayed cyclically or not.
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*
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* @param[in] obj The object.
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*
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* @return Use @c true to make it cycle through items or @c false for it to
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* stop at the end of @c obj's internal list of items.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI Eina_Bool elm_obj_slideshow_items_loop_get(const Eo *obj);
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/**
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* @brief Set the interval between each image transition on a given slideshow
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* widget and start the slideshow itself.
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*
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* After this call, the slideshow widget will start cycling its view,
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* sequentially and automatically, with the images of the items it has. The
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* time between each new image displayed is going to be @c timeout, in seconds.
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* If a different timeout was set previously and an slideshow was in progress,
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* it will continue with the new time between transitions, after this call.
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*
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* @note A value less than or equal to 0 on @c timeout will disable the
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* widget's internal timer, thus halting any slideshow which could be happening
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* on @c obj.
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*
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* @param[in] obj The object.
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* @param[in] timeout The new displaying timeout for images.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_timeout_set(Eo *obj, double timeout);
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/**
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* @brief Get the interval set for image transitions on a given slideshow
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* widget.
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*
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* @param[in] obj The object.
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*
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* @return The new displaying timeout for images.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI double elm_obj_slideshow_timeout_get(const Eo *obj);
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/**
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* @brief Get the internal list of items in a given slideshow widget.
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*
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* This list is not to be modified in any way and must not be freed.
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*
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* @warning This list is only valid until @c obj object's internal items list
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* is changed. It should be fetched again with another call to this function
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* when changes happen.
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*
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* @param[in] obj The object.
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*
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* @return The list of items (#Elm_Widget_Item as data) or @c null on errors.
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2019-03-05 14:00:37 -08:00
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI const Eina_List *elm_obj_slideshow_items_get(const Eo *obj);
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/**
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* @brief Returns the list of sliding transition/effect names available, for a
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* given slideshow widget.
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*
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* The transitions, which come from @c obj's theme, must be an EDC data item
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* named $"transitions" on the theme file, with (prefix) names of EDC programs
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* actually implementing them.
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*
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* The available transitions for slideshows on the default theme are "fade"
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* (the current item fades out, while the new one fades in to the slideshow's
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* viewport), "black_fade" (the current item fades to black, and just then, the
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* new item will fade in), "horizontal" (the current item slides horizontally,
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* until it gets out of the slideshow's viewport, while the new item comes from
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* the left to take its place), "vertical" (the current item slides vertically,
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* until it gets out of the slideshow's viewport, while the new item comes from
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* the bottom to take its place), "square" (the new item starts to appear from
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* the middle of the current one, but with a tiny size, growing until its
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* target (full) size and covering the old one.
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*
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* @warning The stringshared strings get no new references exclusive to the
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* user grabbing the list, here, so if you'd like to use them out of this
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* call's context, you'd better @ref eina_stringshare_ref them. Also the list
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* is an internal list and so is only valid for as long as the slideshow object
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* is valid and has not internally changed its list for some reason, so make a
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* copy if you need it around.
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*
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* @param[in] obj The object.
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*
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* @return The list of transitions (list of stringshared strings as data).
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI const Eina_List *elm_obj_slideshow_transitions_get(const Eo *obj);
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/**
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* @brief Get the number of items stored in a given slideshow widget.
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*
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* @param[in] obj The object.
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*
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* @return The number of items on @c obj, at the moment of this call.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI unsigned int elm_obj_slideshow_count_get(const Eo *obj);
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/**
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* @brief Returns the currently displayed item, in a given slideshow widget.
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*
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* @param[in] obj The object.
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*
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* @return A handle to the item being displayed in @c obj or @c null, if none
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* is (and on errors)
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI Elm_Widget_Item *elm_obj_slideshow_item_current_get(const Eo *obj);
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/**
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* @brief Returns the list of layout names available, for a given slideshow
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* widget.
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*
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* Slideshow layouts will change how the widget is to dispose each image item
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* in its viewport, with regard to cropping, scaling, etc.
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*
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* The layouts, which come from @c obj's theme, must be an EDC data item name
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* $"layouts" on the theme file, with (prefix) names of EDC programs actually
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* implementing them.
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*
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* The available layouts for slideshows on the default theme are "fullscreen"
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* (item images with original aspect, scaled to touch top and down slideshow
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* borders or, if the image's height is not enough, left and right slideshow
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* borders) and "not_fullscreen" (the same behavior as the "fullscreen" one,
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* but always leaving 10% of the slideshow's dimensions of distance between the
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* item image's borders and the slideshow borders, for each axis)-
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*
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* @warning The stringshared strings get no new references exclusive to the
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* user grabbing the list, here, so if you'd like to use them out of this
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* call's context, you'd better @ref eina_stringshare_ref them.
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*
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* @param[in] obj The object.
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*
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* @return The list of layouts (list of stringshared strings as data)
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI const Eina_List *elm_obj_slideshow_layouts_get(const Eo *obj);
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/**
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* @brief Slide to the previous item, in a given slideshow widget
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*
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* The sliding animation @c obj is set to use will be the transition effect
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* used, after this call is issued.
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*
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* @note If the beginning of the slideshow's internal list of items is reached,
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* it'll wrap around to the list's end, again.
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* @param[in] obj The object.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_previous(Eo *obj);
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/**
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* @brief Get the the item, in a given slideshow widget, placed at position
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* @c nth, in its internal items list.
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*
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* @param[in] obj The object.
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* @param[in] nth The number of the item to grab a handle to (0 being the
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* first).
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*
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* @return The item stored in @c obj at position @c nth or @c null if there's
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* no item with that index (and on errors).
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI Elm_Widget_Item *elm_obj_slideshow_item_nth_get(const Eo *obj, unsigned int nth);
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/**
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* @brief Slide to the next item, in a given slideshow widget.
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*
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* The sliding animation @c obj is set to use will be the transition effect
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* used, after this call is issued.
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*
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* @note If the end of the slideshow's internal list of items is reached, it'll
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* wrap around to the list's beginning, again.
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* @param[in] obj The object.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_next(Eo *obj);
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/**
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* @brief Remove all items from a given slideshow widget.
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*
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* This removes (and deletes) all items in @c obj, leaving it empty.
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* @param[in] obj The object.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI void elm_obj_slideshow_clear(Eo *obj);
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/**
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* @brief Add (append) a new item in a given slideshow widget.
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*
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* Add a new item to @c obj's internal list of items, appending it. The item's
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* class must contain the function really fetching the image object to show for
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* this item, which could be an Evas image object or an Elementary photo, for
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* example. The @c data parameter is going to be passed to both class functions
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* of the item.
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*
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* @param[in] obj The object.
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* @param[in] itc The item class for the item.
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* @param[in] data The item's data.
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*
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* @return A handle to the item added or @c null on errors.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI Elm_Widget_Item *elm_obj_slideshow_item_add(Eo *obj, const Elm_Slideshow_Item_Class *itc, const void *data);
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/**
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* @brief Insert a new item into the given slideshow widget, using the @c func
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* function to sort items (by item handles).
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*
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* Add a new item to @c obj's internal list of items, in a position determined
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* by the @c func comparing function. The item's class must contain the
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* function really fetching the image object to show for this item, which could
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* be an Evas image object or an Elementary photo, for example. The @c data
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* parameter is going to be passed to both class functions of the item.
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*
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* @param[in] obj The object.
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* @param[in] itc The item class for the item.
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* @param[in] data The item's data.
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* @param[in] func The comparing function to be used to sort the slideshow
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* items by #Elm_Slideshow_Item_Class item handles.
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*
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* @return Returns The slideshow item handle, on success, or @c null on errors.
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*
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* @ingroup Elm_Slideshow
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*/
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EOAPI Elm_Widget_Item *elm_obj_slideshow_item_sorted_insert(Eo *obj, const Elm_Slideshow_Item_Class *itc, const void *data, Eina_Compare_Cb func);
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EWAPI extern const Efl_Event_Description _ELM_SLIDESHOW_EVENT_CHANGED;
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/** Called when slideshow widget changed
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* @return Efl_Object *
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*
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* @ingroup Elm_Slideshow
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*/
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#define ELM_SLIDESHOW_EVENT_CHANGED (&(_ELM_SLIDESHOW_EVENT_CHANGED))
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EWAPI extern const Efl_Event_Description _ELM_SLIDESHOW_EVENT_TRANSITION_END;
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/** Called on transition end
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* @return Efl_Object *
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*
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* @ingroup Elm_Slideshow
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*/
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#define ELM_SLIDESHOW_EVENT_TRANSITION_END (&(_ELM_SLIDESHOW_EVENT_TRANSITION_END))
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#endif
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