forked from enlightenment/efl
Ecore event functions docs improvements.
Moved docs to header file. Fixed some typos. Added @brief. Add failure information to @return. Other random improvements. SVN revision: 69337
This commit is contained in:
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c001712874
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@ -664,16 +664,156 @@ struct _Ecore_Event_Signal_Realtime /** Realtime event */
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#endif
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};
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/**
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* @brief Add an event handler.
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* @param type The type of the event this handler will get called for
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* @param func The function to call when the event is found in the queue
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* @param data A data pointer to pass to the called function @p func
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* @return A new Event handler, or NULL on failure
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*
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* Add an event handler to the list of handlers. This will, on success, return
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* a handle to the event handler object that was created, that can be used
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* later to remove the handler using ecore_event_handler_del(). The @p type
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* parameter is the integer of the event type that will trigger this callback
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* to be called. The callback @p func is called when this event is processed
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* and will be passed the event type, a pointer to the private event
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* structure that is specific to that event type, and a data pointer that is
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* provided in this call as the @p data parameter.
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*
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* When the callback @p func is called, it must return 1 or 0. If it returns
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* 1 (or ECORE_CALLBACK_PASS_ON), It will keep being called as per normal, for
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* each handler set up for that event type. If it returns 0 (or
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* ECORE_CALLBACK_DONE), it will cease processing handlers for that particular
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* event, so all handler set to handle that event type that have not already
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* been called, will not be.
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*/
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EAPI Ecore_Event_Handler *ecore_event_handler_add(int type, Ecore_Event_Handler_Cb func, const void *data);
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/**
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* @brief Delete an event handler.
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* @param event_handler Event handler handle to delete
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* @return Data passed to handler
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*
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* Delete a specified event handler from the handler list. On success this will
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* delete the event handler and return the pointer passed as @p data when the
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* handler was added by ecore_event_handler_add(). On failure NULL will be
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* returned. Once a handler is deleted it will no longer be called.
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*/
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EAPI void *ecore_event_handler_del(Ecore_Event_Handler *event_handler);
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/**
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* @brief Add an event to the event queue.
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* @param type The event type to add to the end of the event queue
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* @param ev The data structure passed as @c event to event handlers
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* @param func_free The function to be called to free @a ev
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* @param data The data pointer to be passed to the free function
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* @return A Handle for that event on success, otherwise NULL
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*
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* If it succeeds, an event of type @a type will be added to the queue for
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* processing by event handlers added by ecore_event_handler_add(). The @a ev
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* parameter will be passed as the @c event parameter of the handler. When the
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* event is no longer needed, @a func_free will be called and passed @a ev for
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* cleaning up. If @p func_free is NULL, free() will be called with the private
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* structure pointer.
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*/
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EAPI Ecore_Event *ecore_event_add(int type, void *ev, Ecore_End_Cb func_free, void *data);
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/**
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* @brief Delete an event from the queue.
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* @param event The event handle to delete
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* @return The data pointer originally set for the event free function
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*
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* This deletes the event @p event from the event queue, and returns the
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* @p data parameter originally set when adding it with ecore_event_add(). This
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* does not immediately call the free function, and it may be called later on
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* cleanup, and so if the free function depends on the data pointer to work,
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* you should defer cleaning of this till the free function is called later.
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*/
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EAPI void *ecore_event_del(Ecore_Event *event);
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/**
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* @brief Get the data associated with an #Ecore_Event_Handler
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* @param eh The event handler
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* @return The data
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*
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* This function returns the data previously associated with @p eh by
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* ecore_event_handler_add().
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*/
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EAPI void *ecore_event_handler_data_get(Ecore_Event_Handler *eh);
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/**
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* @brief Set the data associated with an #Ecore_Event_Handler
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* @param eh The event handler
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* @param data The data to associate
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* @return The previous data
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*
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* This function sets @p data to @p eh and returns the old data pointer
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* which was previously associated with @p eh by ecore_event_handler_add().
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*/
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EAPI void *ecore_event_handler_data_set(Ecore_Event_Handler *eh, const void *data);
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/**
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* @brief Allocate a new event type id sensibly and return the new id.
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* @return A new event type id.
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*
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* This function allocates a new event type id and returns it. Once an event
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* type has been allocated it can never be de-allocated during the life of
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* the program. There is no guarantee of the contents of this event ID, or how
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* it is calculated, except that the ID will be unique to the current instance
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* of the process.
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*/
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EAPI int ecore_event_type_new(void);
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/**
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* @brief Add a filter the current event queue.
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*
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* @param func_start Function to call just before filtering and return data
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* @param func_filter Function to call on each event
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* @param func_end Function to call after the queue has been filtered
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* @param data Data to pass to the filter functions
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* @return A filter handle on success, NULL otherwise
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*
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* Adds a callback to filter events from the event queue. Filters are called on
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* the queue just before Event handler processing to try and remove redundant
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* events. Just as processing is about to start @a func_start is called and
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* passed the @a data pointer, the return value of this functions is passed to
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* @a func_filter as loop_data. @a func_filter is also passed @a data and the
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* event type and event structure. If this @a func_filter returns #EINA_FALSE,
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* the event is removed from the queue, if it returns #EINA_TRUE, the event is
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* kept. When processing is finished @p func_end is called and is passed the
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* loop_data(returned by @c func_start) and @p data pointer to clean up.
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*/
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EAPI Ecore_Event_Filter *ecore_event_filter_add(Ecore_Data_Cb func_start, Ecore_Filter_Cb func_filter, Ecore_End_Cb func_end, const void *data);
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/**
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* @brief Delete an event filter.
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* @param ef The event filter handle
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* @return The data set for the filter on success, NULL otherwise
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*
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* Delete a filter that has been added by its @p ef handle.
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*/
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EAPI void *ecore_event_filter_del(Ecore_Event_Filter *ef);
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/**
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* @brief Return the current event type being handled.
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* @return The current event type being handled if inside a handler callback,
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* ECORE_EVENT_NONE otherwise
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*
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* If the program is currently inside an Ecore event handler callback this
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* will return the type of the current event being processed.
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*
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* This is useful when certain Ecore modules such as Ecore_Evas "swallow"
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* events and not all the original information is passed on. In special cases
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* this extra information may be useful or needed and using this call can let
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* the program know if the event type being handled is one it wants to get more
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* information about.
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*/
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EAPI int ecore_event_current_type_get(void);
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/**
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* @brief Return the current event type pointer handled.
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* @return The current event pointer being handled if inside a handler callback,
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* NULL otherwise
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*
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* If the program is currently inside an Ecore event handler callback this
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* will return the pointer of the current event being processed.
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*
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* This is useful when certain Ecore modules such as Ecore_Evas "swallow"
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* events and not all the original information is passed on. In special cases
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* this extra information may be useful or needed and using this call can let
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* the program access the event data if the type of the event is handled by
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* the program.
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*/
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EAPI void *ecore_event_current_event_get(void);
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/**
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@ -72,35 +72,6 @@ static void *ecore_raw_event_event = NULL;
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static void _ecore_event_purge_deleted(void);
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static void *_ecore_event_del(Ecore_Event *event);
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/**
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* @addtogroup Ecore_Event_Group
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*
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* @{
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*/
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/**
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* Add an event handler.
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* @param type The type of the event this handler will get called for
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* @param func The function to call when the event is found in the queue
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* @param data A data pointer to pass to the called function @p func
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* @return A new Event handler, or NULL on failure
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*
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* Add an event handler to the list of handlers. This will, on success, return
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* a handle to the event handler object that was created, that can be used
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* later to remove the handler using ecore_event_handler_del(). The @p type
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* parameter is the integer of the event type that will trigger this callback
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* to be called. The callback @p func is called when this event is processed
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* and will be passed the event type, a pointer to the private event
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* structure that is specific to that event type, and a data pointer that is
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* provided in this call as the @p data parameter.
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*
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* When the callback @p func is called, it must return 1 or 0. If it returns
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* 1 (or ECORE_CALLBACK_PASS_ON), It will keep being called as per normal, for
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* each handler set up for that event type. If it returns 0 (or
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* ECORE_CALLBACK_DONE), it will cease processing handlers for that particular
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* event, so all handler set to handle that event type that have not already
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* been called, will not be.
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*/
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EAPI Ecore_Event_Handler *
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ecore_event_handler_add(int type,
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Ecore_Event_Handler_Cb func,
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@ -151,16 +122,6 @@ unlock:
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return eh;
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}
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/**
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* Delete an event handler.
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* @param event_handler Event handler handle to delete
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* @return Data passed to handler
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*
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* Delete a specified event handler from the handler list. On success this will
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* delete the event handler and return the pointer passed as @p data when the
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* handler was added by ecore_event_handler_add(). On failure NULL will be
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* returned. Once a handler is deleted it will no longer be called.
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*/
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EAPI void *
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ecore_event_handler_del(Ecore_Event_Handler *event_handler)
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{
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@ -180,14 +141,6 @@ unlock:
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return data;
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}
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/**
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* @brief Get the data associated with an #Ecore_Event_Handler
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* @param eh The event handler
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* @return The data
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*
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* This function returns the data previously associated with @p eh by
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* ecore_event_handler_add().
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*/
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EAPI void *
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ecore_event_handler_data_get(Ecore_Event_Handler *eh)
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{
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@ -205,15 +158,6 @@ unlock:
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return data;
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}
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/**
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* @brief Set the data associated with an #Ecore_Event_Handler
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* @param eh The event handler
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* @param data The data to associate
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* @return The previous data
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*
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* This function sets @p data to @p eh and returns the old data pointer
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* which was previously associated with @p eh by ecore_event_handler_add().
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*/
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EAPI void *
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ecore_event_handler_data_set(Ecore_Event_Handler *eh,
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const void *data)
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@ -241,21 +185,6 @@ _ecore_event_generic_free(void *data __UNUSED__,
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free(event);
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}
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/**
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* @brief Add an event to the event queue.
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* @param type The event type to add to the end of the event queue
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* @param ev The data structure passed as @c event to event handlers
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* @param func_free The function to be called to free @a ev
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* @param data The data pointer to be passed to the free function
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* @return A Handle for that event on success, otherwise NULL
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*
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* If it succeeds, an event of type @a type will be added to the queue for
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* processing by event handlers added by ecore_event_handler_add(). The @a ev
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* parameter will be passed as the @c event parameter of the handler. When the
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* event is no longer needed, @a func_free will be called and passed @a ev for
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* cleaning up. If @p func_free is NULL, free() will be called with the private
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* structure pointer.
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*/
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EAPI Ecore_Event *
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ecore_event_add(int type,
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void *ev,
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@ -276,17 +205,6 @@ unlock:
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return event;
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}
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/**
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* Delete an event from the queue.
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* @param event The event handle to delete
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* @return The data pointer originally set for the event free function
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*
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* This deletes the event @p event from the event queue, and returns the
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* @p data parameer originally set when adding it with ecore_event_add(). This
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* does not immediately call the free function, and it may be called later on
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* cleanup, and so if the free function depends on the data pointer to work,
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* you should defer cleaning of this till the free function is called later.
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*/
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EAPI void *
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ecore_event_del(Ecore_Event *event)
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{
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@ -306,16 +224,6 @@ unlock:
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return data;
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}
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/**
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* Allocate a new event type id sensibly and return the new id.
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* @return A new event type id.
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*
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* This function allocates a new event type id and returns it. Once an event
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* type has been allocated it can never be de-allocated during the life of
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* the program. There is no guarantee of the contents of this event ID, or how
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* it is calculated, except that the ID will be unique to the current instance
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* of the process.
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*/
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EAPI int
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ecore_event_type_new(void)
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{
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@ -328,26 +236,6 @@ ecore_event_type_new(void)
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return id;
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}
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/**
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* Add a filter the current event queue.
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* @param func_start Function to call just before filtering and return data
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* @param func_filter Function to call on each event
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* @param func_end Function to call after the queu has been filtered
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* @param data Data to pass to the filter functions
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* @return A filter handle
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*
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* This adds a filter to call callbacks to loop through the event queue and
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* filter events out of the queue. On failure NULL is returned. On success a
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* Filter handle is returned. Filters are called on the queue just before
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* Event handler processing to try and remove redundant events. Just as
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* processing starts @p func_start is called and passed the @p data pointer.
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* This function returns a pointer that is used as loop_data that is now passed to
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* @p func_filter as loop_data. @p func_filter is also passed @p data and the
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* event type and private event structure. If this callback returns 0, the
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* event is removed from the queue. If it returns 1, the event is kept. When
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* processing is finished @p func_end is called and is passed the loop_data
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* and @p data pointer to clean up.
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*/
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EAPI Ecore_Event_Filter *
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ecore_event_filter_add(Ecore_Data_Cb func_start,
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Ecore_Filter_Cb func_filter,
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return ef;
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}
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/**
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* Delete an event filter.
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* @param ef The event filter handle
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* @return The data set for the filter
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*
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* Delete a filter that has been added by its @p ef handle. On success this
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* will return the data pointer set when this filter was added. On failure
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* NULL is returned.
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*/
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EAPI void *
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ecore_event_filter_del(Ecore_Event_Filter *ef)
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{
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return data;
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}
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/**
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* Return the current event type being handled.
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* @return The current event type being handled if inside a handler callback
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*
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* If the program is currently inside an Ecore event handler callback this
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* will return the type of the current event being processed. If Ecore is
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* not inside an event handler, ECORE_EVENT_NONE is returned.
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*
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* This is useful when certain Ecore modules such as Ecore_Evas "swallow"
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* events and not all the original information is passed on. In special cases
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* this extra information may be useful or needed and using this call can let
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* the program know if the event type being handled is one it wants to get more
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* information about.
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*/
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EAPI int
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ecore_event_current_type_get(void)
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{
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return ecore_raw_event_type;
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}
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/**
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* Return the current event type pointer handled.
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* @return The current event pointer being handled if inside a handler callback
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*
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* If the program is currently inside an Ecore event handler callback this
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* will return the pointer of the current event being processed. If Ecore is
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* not inside an event handler, NULL will be returned.
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*
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* This is useful when certain Ecore modules such as Ecore_Evas "swallow"
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* events and not all the original information is passed on. In special cases
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* this extra information may be useful or needed and using this call can let
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* the program access the event data if the type of the event is handled by
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* the program.
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*/
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EAPI void *
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ecore_event_current_event_get(void)
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{
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return ecore_raw_event_event;
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}
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/**
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* @}
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*/
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EAPI void *
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_ecore_event_handler_del(Ecore_Event_Handler *event_handler)
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{
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