660 lines
19 KiB
C
660 lines
19 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdlib.h>
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#include "Ecore.h"
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#include "ecore_private.h"
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static int inpurge = 0;
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struct _Ecore_Event_Handler
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{
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EINA_INLIST;
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ECORE_MAGIC;
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int type;
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Ecore_Event_Handler_Cb func;
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void *data;
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int references;
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Eina_Bool delete_me : 1;
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};
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struct _Ecore_Event_Filter
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{
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EINA_INLIST;
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ECORE_MAGIC;
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Ecore_Data_Cb func_start;
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Ecore_Filter_Cb func_filter;
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Ecore_End_Cb func_end;
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void *loop_data;
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void *data;
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int references;
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Eina_Bool delete_me : 1;
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};
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struct _Ecore_Event
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{
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EINA_INLIST;
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ECORE_MAGIC;
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int type;
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void *event;
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Ecore_End_Cb func_free;
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void *data;
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int references;
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Eina_Bool delete_me : 1;
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};
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static int events_num = 0;
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static Ecore_Event *events = NULL;
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static Ecore_Event *event_current = NULL;
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static Ecore_Event *purge_events = NULL;
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static Ecore_Event_Handler **event_handlers = NULL;
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static Ecore_Event_Handler *event_handler_current = NULL;
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static int event_handlers_num = 0;
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static int event_handlers_alloc_num = 0;
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static Eina_List *event_handlers_delete_list = NULL;
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static Ecore_Event_Filter *event_filters = NULL;
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static Ecore_Event_Filter *event_filter_current = NULL;
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static Ecore_Event *event_filter_event_current = NULL;
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static int event_filters_delete_me = 0;
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static int event_id_max = ECORE_EVENT_COUNT;
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static int ecore_raw_event_type = ECORE_EVENT_NONE;
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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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* 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_RENEW), 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_CANCEL), 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, Ecore_Event_Handler_Cb func, const void *data)
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{
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Ecore_Event_Handler *eh;
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if (!func) return NULL;
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if ((type <= ECORE_EVENT_NONE) || (type >= event_id_max)) return NULL;
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eh = calloc(1, sizeof(Ecore_Event_Handler));
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if (!eh) return NULL;
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ECORE_MAGIC_SET(eh, ECORE_MAGIC_EVENT_HANDLER);
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eh->type = type;
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eh->func = func;
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eh->data = (void *)data;
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if (type >= (event_handlers_num - 1))
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{
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int p_alloc_num;
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p_alloc_num = event_handlers_alloc_num;
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event_handlers_num = type + 1;
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if (event_handlers_num > event_handlers_alloc_num)
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{
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Ecore_Event_Handler **new_handlers;
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int i;
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event_handlers_alloc_num = ((event_handlers_num + 16) / 16) * 16;
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new_handlers = realloc(event_handlers, event_handlers_alloc_num * sizeof(Ecore_Event_Handler *));
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if (!new_handlers)
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{
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free(eh);
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return NULL;
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}
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event_handlers = new_handlers;
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for (i = p_alloc_num; i < event_handlers_alloc_num; i++)
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event_handlers[i] = NULL;
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}
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}
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event_handlers[type] = (Ecore_Event_Handler *) eina_inlist_append(EINA_INLIST_GET(event_handlers[type]), EINA_INLIST_GET(eh));
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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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if (!ECORE_MAGIC_CHECK(event_handler, ECORE_MAGIC_EVENT_HANDLER))
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{
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ECORE_MAGIC_FAIL(event_handler, ECORE_MAGIC_EVENT_HANDLER,
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"ecore_event_handler_del");
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return NULL;
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}
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EINA_SAFETY_ON_TRUE_RETURN_VAL(event_handler->delete_me, NULL);
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event_handler->delete_me = 1;
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event_handlers_delete_list = eina_list_append(event_handlers_delete_list, event_handler);
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return event_handler->data;
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}
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static void
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_ecore_event_generic_free (void *data __UNUSED__, void *event)
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{
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free (event);
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}
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/**
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* 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 private data structure for this event type
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* @param func_free The function to be called to free this private structure
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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
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*
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* On success this function returns a handle to an event on the event queue, or
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* NULL if it fails. If it succeeds, an event of type @p type will be added
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* to the queue for processing by event handlers added by
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* ecore_event_handler_add(). The @p ev parameter will be a pointer to the event
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* private data that is specific to that event type. When the event is no
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* longer needed, @p func_free will be called and passed the private structure
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* pointer for cleaning up. If @p func_free is NULL, free() will be called
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* with the private structure pointer.
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* func_free is passed @p data as its data parameter.
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*/
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EAPI Ecore_Event *
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ecore_event_add(int type, void *ev, Ecore_End_Cb func_free, void *data)
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{
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/* if (!ev) return NULL;*/
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if (type <= ECORE_EVENT_NONE) return NULL;
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if (type >= event_id_max) return NULL;
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if ((ev) && (!func_free)) func_free = _ecore_event_generic_free;
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return _ecore_event_add(type, ev, func_free, data);
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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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if (!ECORE_MAGIC_CHECK(event, ECORE_MAGIC_EVENT))
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{
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ECORE_MAGIC_FAIL(event, ECORE_MAGIC_EVENT, "ecore_event_del");
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return NULL;
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}
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EINA_SAFETY_ON_TRUE_RETURN_VAL(event->delete_me, NULL);
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event->delete_me = 1;
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return event->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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event_id_max++;
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return event_id_max - 1;
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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, Ecore_Filter_Cb func_filter, Ecore_End_Cb func_end, const void *data)
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{
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Ecore_Event_Filter *ef;
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if (!func_filter) return NULL;
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ef = calloc(1, sizeof(Ecore_Event_Filter));
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if (!ef) return NULL;
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ECORE_MAGIC_SET(ef, ECORE_MAGIC_EVENT_FILTER);
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ef->func_start = func_start;
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ef->func_filter = func_filter;
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ef->func_end = func_end;
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ef->data = (void *)data;
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event_filters = (Ecore_Event_Filter *) eina_inlist_append(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(ef));
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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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if (!ECORE_MAGIC_CHECK(ef, ECORE_MAGIC_EVENT_FILTER))
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{
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ECORE_MAGIC_FAIL(ef, ECORE_MAGIC_EVENT_FILTER, "ecore_event_filter_del");
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return NULL;
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}
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EINA_SAFETY_ON_TRUE_RETURN_VAL(ef->delete_me, NULL);
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ef->delete_me = 1;
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event_filters_delete_me = 1;
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return ef->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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void
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_ecore_event_shutdown(void)
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{
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int i;
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Ecore_Event_Handler *eh;
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Ecore_Event_Filter *ef;
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while (events) _ecore_event_del(events);
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event_current = NULL;
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for (i = 0; i < event_handlers_num; i++)
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{
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while ((eh = event_handlers[i]))
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{
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event_handlers[i] = (Ecore_Event_Handler *) eina_inlist_remove(EINA_INLIST_GET(event_handlers[i]), EINA_INLIST_GET(event_handlers[i]));
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ECORE_MAGIC_SET(eh, ECORE_MAGIC_NONE);
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if (!eh->delete_me) free(eh);
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}
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}
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EINA_LIST_FREE(event_handlers_delete_list, eh)
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free(eh);
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if (event_handlers) free(event_handlers);
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event_handlers = NULL;
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event_handlers_num = 0;
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event_handlers_alloc_num = 0;
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while ((ef = event_filters))
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{
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event_filters = (Ecore_Event_Filter *) eina_inlist_remove(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(event_filters));
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ECORE_MAGIC_SET(ef, ECORE_MAGIC_NONE);
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free(ef);
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}
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event_filters_delete_me = 0;
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event_filter_current = NULL;
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event_filter_event_current = NULL;
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}
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int
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_ecore_event_exist(void)
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{
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Ecore_Event *e;
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EINA_INLIST_FOREACH(events, e)
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if (!e->delete_me) return 1;
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return 0;
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}
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Ecore_Event *
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_ecore_event_add(int type, void *ev, Ecore_End_Cb func_free, void *data)
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{
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Ecore_Event *e;
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e = calloc(1, sizeof(Ecore_Event));
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if (!e) return NULL;
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ECORE_MAGIC_SET(e, ECORE_MAGIC_EVENT);
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e->type = type;
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e->event = ev;
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e->func_free = func_free;
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e->data = data;
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if (inpurge > 0)
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{
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purge_events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(purge_events), EINA_INLIST_GET(e));
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events_num++;
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}
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else
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{
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events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(events), EINA_INLIST_GET(e));
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events_num++;
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}
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return e;
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}
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void *
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_ecore_event_del(Ecore_Event *event)
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{
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void *data;
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data = event->data;
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if (event->func_free) event->func_free(event->data, event->event);
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events = (Ecore_Event *) eina_inlist_remove(EINA_INLIST_GET(events), EINA_INLIST_GET(event));
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ECORE_MAGIC_SET(event, ECORE_MAGIC_NONE);
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free(event);
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events_num--;
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return data;
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}
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static void
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_ecore_event_purge_deleted(void)
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{
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Ecore_Event *itr = events;
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inpurge++;
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while (itr)
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{
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Ecore_Event *next = (Ecore_Event *)EINA_INLIST_GET(itr)->next;
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if ((!itr->references) && (itr->delete_me))
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_ecore_event_del(itr);
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itr = next;
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}
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inpurge--;
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while (purge_events)
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{
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Ecore_Event *e = purge_events;
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purge_events = (Ecore_Event *)eina_inlist_remove(EINA_INLIST_GET(purge_events), EINA_INLIST_GET(purge_events));
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events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(events), EINA_INLIST_GET(e));
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}
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}
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static inline void
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_ecore_event_filters_apply()
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{
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if (!event_filter_current)
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{
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/* regular main loop, start from head */
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event_filter_current = event_filters;
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}
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else
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{
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/* recursive main loop, continue from where we were */
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event_filter_current = (Ecore_Event_Filter *)EINA_INLIST_GET(event_filter_current)->next;
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}
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while (event_filter_current)
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{
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Ecore_Event_Filter *ef = event_filter_current;
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if (!ef->delete_me)
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{
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ef->references++;
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if (ef->func_start)
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ef->loop_data = ef->func_start(ef->data);
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if (!event_filter_event_current)
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{
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/* regular main loop, start from head */
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event_filter_event_current = events;
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}
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else
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{
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/* recursive main loop, continue from where we were */
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event_filter_event_current = (Ecore_Event *)EINA_INLIST_GET(event_filter_event_current)->next;
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}
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while (event_filter_event_current)
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{
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Ecore_Event *e = event_filter_event_current;
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if (!ef->func_filter(ef->data, ef->loop_data,
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e->type, e->event))
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{
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ecore_event_del(e);
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}
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|
if (event_filter_event_current) /* may have changed in recursive main loops */
|
|
event_filter_event_current = (Ecore_Event *)EINA_INLIST_GET(event_filter_event_current)->next;
|
|
}
|
|
if (ef->func_end)
|
|
ef->func_end(ef->data, ef->loop_data);
|
|
|
|
ef->references--;
|
|
}
|
|
|
|
if (event_filter_current) /* may have changed in recursive main loops */
|
|
event_filter_current = (Ecore_Event_Filter *)EINA_INLIST_GET(event_filter_current)->next;
|
|
}
|
|
if (event_filters_delete_me)
|
|
{
|
|
int deleted_in_use = 0;
|
|
Ecore_Event_Filter *l;
|
|
for (l = event_filters; l;)
|
|
{
|
|
Ecore_Event_Filter *ef = l;
|
|
l = (Ecore_Event_Filter *) EINA_INLIST_GET(l)->next;
|
|
if (ef->delete_me)
|
|
{
|
|
if (ef->references)
|
|
{
|
|
deleted_in_use++;
|
|
continue;
|
|
}
|
|
|
|
event_filters = (Ecore_Event_Filter *) eina_inlist_remove(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(ef));
|
|
ECORE_MAGIC_SET(ef, ECORE_MAGIC_NONE);
|
|
free(ef);
|
|
}
|
|
}
|
|
if (!deleted_in_use)
|
|
event_filters_delete_me = 0;
|
|
}
|
|
}
|
|
void
|
|
_ecore_event_call(void)
|
|
{
|
|
Eina_List *l, *l_next;
|
|
Ecore_Event_Handler *eh;
|
|
|
|
_ecore_event_filters_apply();
|
|
|
|
if (!event_current)
|
|
{
|
|
/* regular main loop, start from head */
|
|
event_current = events;
|
|
event_handler_current = NULL;
|
|
}
|
|
|
|
while (event_current)
|
|
{
|
|
Ecore_Event *e = event_current;
|
|
int handle_count = 0;
|
|
|
|
if (e->delete_me)
|
|
{
|
|
event_current = (Ecore_Event *)EINA_INLIST_GET(event_current)->next;
|
|
continue;
|
|
}
|
|
|
|
ecore_raw_event_type = e->type;
|
|
ecore_raw_event_event = e->event;
|
|
e->references++;
|
|
if ((e->type >= 0) && (e->type < event_handlers_num))
|
|
{
|
|
if (!event_handler_current)
|
|
{
|
|
/* regular main loop, start from head */
|
|
event_handler_current = event_handlers[e->type];
|
|
}
|
|
else
|
|
{
|
|
/* recursive main loop, continue from where we were */
|
|
event_handler_current = (Ecore_Event_Handler *)EINA_INLIST_GET(event_handler_current)->next;
|
|
}
|
|
|
|
while ((event_handler_current) && (!e->delete_me))
|
|
{
|
|
Ecore_Event_Handler *eh = event_handler_current;
|
|
if (!eh->delete_me)
|
|
{
|
|
Eina_Bool ret;
|
|
|
|
handle_count++;
|
|
|
|
eh->references++;
|
|
ret = eh->func(eh->data, e->type, e->event);
|
|
eh->references--;
|
|
|
|
if (!ret)
|
|
{
|
|
event_handler_current = NULL;
|
|
break; /* 0 == "call no further handlers" */
|
|
}
|
|
}
|
|
|
|
if (event_handler_current) /* may have changed in recursive main loops */
|
|
event_handler_current = (Ecore_Event_Handler *)EINA_INLIST_GET(event_handler_current)->next;
|
|
}
|
|
}
|
|
/* if no handlers were set for EXIT signal - then default is */
|
|
/* to quit the main loop */
|
|
if ((e->type == ECORE_EVENT_SIGNAL_EXIT) && (handle_count == 0))
|
|
ecore_main_loop_quit();
|
|
e->references--;
|
|
e->delete_me = 1;
|
|
|
|
if (event_current) /* may have changed in recursive main loops */
|
|
event_current = (Ecore_Event *)EINA_INLIST_GET(event_current)->next;
|
|
}
|
|
|
|
ecore_raw_event_type = ECORE_EVENT_NONE;
|
|
ecore_raw_event_event = NULL;
|
|
|
|
_ecore_event_purge_deleted();
|
|
|
|
EINA_LIST_FOREACH_SAFE(event_handlers_delete_list, l, l_next, eh)
|
|
{
|
|
if (eh->references) continue;
|
|
|
|
event_handlers_delete_list = eina_list_remove_list(event_handlers_delete_list, l);
|
|
|
|
event_handlers[eh->type] = (Ecore_Event_Handler *) eina_inlist_remove(EINA_INLIST_GET(event_handlers[eh->type]), EINA_INLIST_GET(eh));
|
|
ECORE_MAGIC_SET(eh, ECORE_MAGIC_NONE);
|
|
free(eh);
|
|
}
|
|
}
|
|
|
|
EAPI void *
|
|
_ecore_event_signal_user_new(void)
|
|
{
|
|
Ecore_Event_Signal_User *e;
|
|
|
|
e = calloc(1, sizeof(Ecore_Event_Signal_User));
|
|
return e;
|
|
}
|
|
|
|
void *
|
|
_ecore_event_signal_hup_new(void)
|
|
{
|
|
Ecore_Event_Signal_Hup *e;
|
|
|
|
e = calloc(1, sizeof(Ecore_Event_Signal_Hup));
|
|
return e;
|
|
}
|
|
|
|
void *
|
|
_ecore_event_signal_exit_new(void)
|
|
{
|
|
Ecore_Event_Signal_Exit *e;
|
|
|
|
e = calloc(1, sizeof(Ecore_Event_Signal_Exit));
|
|
return e;
|
|
}
|
|
|
|
void *
|
|
_ecore_event_signal_power_new(void)
|
|
{
|
|
Ecore_Event_Signal_Power *e;
|
|
|
|
e = calloc(1, sizeof(Ecore_Event_Signal_Power));
|
|
return e;
|
|
}
|
|
|
|
void *
|
|
_ecore_event_signal_realtime_new(void)
|
|
{
|
|
return calloc(1, sizeof(Ecore_Event_Signal_Realtime));
|
|
}
|