8 #include "ecore_private.h"
10 static int inpurge = 0;
12 struct _Ecore_Event_Handler
17 Ecore_Event_Handler_Cb func;
20 Eina_Bool delete_me : 1;
23 struct _Ecore_Event_Filter
27 Ecore_Data_Cb func_start;
28 Ecore_Filter_Cb func_filter;
29 Ecore_End_Cb func_end;
33 Eina_Bool delete_me : 1;
42 Ecore_End_Cb func_free;
45 Eina_Bool delete_me : 1;
49 static int events_num = 0;
50 static Ecore_Event *events = NULL;
51 static Ecore_Event *event_current = NULL;
52 static Ecore_Event *purge_events = NULL;
54 static Ecore_Event_Handler **event_handlers = NULL;
55 static Ecore_Event_Handler *event_handler_current = NULL;
56 static int event_handlers_num = 0;
57 static int event_handlers_alloc_num = 0;
58 static Eina_List *event_handlers_delete_list = NULL;
60 static Ecore_Event_Filter *event_filters = NULL;
61 static Ecore_Event_Filter *event_filter_current = NULL;
62 static Ecore_Event *event_filter_event_current = NULL;
63 static int event_filters_delete_me = 0;
64 static int event_id_max = ECORE_EVENT_COUNT;
65 static int ecore_raw_event_type = ECORE_EVENT_NONE;
66 static void *ecore_raw_event_event = NULL;
69 static void _ecore_event_purge_deleted(void);
70 static void *_ecore_event_del(Ecore_Event *event);
74 * Add an event handler.
75 * @param type The type of the event this handler will get called for
76 * @param func The function to call when the event is found in the queue
77 * @param data A data pointer to pass to the called function @p func
78 * @return A new Event handler, or NULL on failure
80 * Add an event handler to the list of handlers. This will, on success, return
81 * a handle to the event handler object that was created, that can be used
82 * later to remove the handler using ecore_event_handler_del(). The @p type
83 * parameter is the integer of the event type that will trigger this callback
84 * to be called. The callback @p func is called when this event is processed
85 * and will be passed the event type, a pointer to the private event
86 * structure that is specific to that event type, and a data pointer that is
87 * provided in this call as the @p data parameter.
89 * When the callback @p func is called, it must return 1 or 0. If it returns
90 * 1 (or ECORE_CALLBACK_RENEW), It will keep being called as per normal, for
91 * each handler set up for that event type. If it returns 0 (or
92 * ECORE_CALLBACK_CANCEL), it will cease processing handlers for that particular
93 * event, so all handler set to handle that event type that have not already
94 * been called, will not be.
96 EAPI Ecore_Event_Handler *
97 ecore_event_handler_add(int type, Ecore_Event_Handler_Cb func, const void *data)
99 Ecore_Event_Handler *eh;
101 if (!func) return NULL;
102 if ((type <= ECORE_EVENT_NONE) || (type >= event_id_max)) return NULL;
103 eh = calloc(1, sizeof(Ecore_Event_Handler));
104 if (!eh) return NULL;
105 ECORE_MAGIC_SET(eh, ECORE_MAGIC_EVENT_HANDLER);
108 eh->data = (void *)data;
109 if (type >= (event_handlers_num - 1))
113 p_alloc_num = event_handlers_alloc_num;
114 event_handlers_num = type + 1;
115 if (event_handlers_num > event_handlers_alloc_num)
117 Ecore_Event_Handler **new_handlers;
120 event_handlers_alloc_num = ((event_handlers_num + 16) / 16) * 16;
121 new_handlers = realloc(event_handlers, event_handlers_alloc_num * sizeof(Ecore_Event_Handler *));
127 event_handlers = new_handlers;
128 for (i = p_alloc_num; i < event_handlers_alloc_num; i++)
129 event_handlers[i] = NULL;
132 event_handlers[type] = (Ecore_Event_Handler *) eina_inlist_append(EINA_INLIST_GET(event_handlers[type]), EINA_INLIST_GET(eh));
137 * Delete an event handler.
138 * @param event_handler Event handler handle to delete
139 * @return Data passed to handler
141 * Delete a specified event handler from the handler list. On success this will
142 * delete the event handler and return the pointer passed as @p data when the
143 * handler was added by ecore_event_handler_add(). On failure NULL will be
144 * returned. Once a handler is deleted it will no longer be called.
147 ecore_event_handler_del(Ecore_Event_Handler *event_handler)
149 if (!ECORE_MAGIC_CHECK(event_handler, ECORE_MAGIC_EVENT_HANDLER))
151 ECORE_MAGIC_FAIL(event_handler, ECORE_MAGIC_EVENT_HANDLER,
152 "ecore_event_handler_del");
155 EINA_SAFETY_ON_TRUE_RETURN_VAL(event_handler->delete_me, NULL);
156 event_handler->delete_me = 1;
157 event_handlers_delete_list = eina_list_append(event_handlers_delete_list, event_handler);
158 return event_handler->data;
162 _ecore_event_generic_free (void *data __UNUSED__, void *event)
168 * Add an event to the event queue.
169 * @param type The event type to add to the end of the event queue
170 * @param ev The private data structure for this event type
171 * @param func_free The function to be called to free this private structure
172 * @param data The data pointer to be passed to the free function
173 * @return A Handle for that event
175 * On success this function returns a handle to an event on the event queue, or
176 * NULL if it fails. If it succeeds, an event of type @p type will be added
177 * to the queue for processing by event handlers added by
178 * ecore_event_handler_add(). The @p ev parameter will be a pointer to the event
179 * private data that is specific to that event type. When the event is no
180 * longer needed, @p func_free will be called and passed the private structure
181 * pointer for cleaning up. If @p func_free is NULL, free() will be called
182 * with the private structure pointer.
183 * func_free is passed @p data as its data parameter.
186 ecore_event_add(int type, void *ev, Ecore_End_Cb func_free, void *data)
188 /* if (!ev) return NULL;*/
189 if (type <= ECORE_EVENT_NONE) return NULL;
190 if (type >= event_id_max) return NULL;
191 if ((ev) && (!func_free)) func_free = _ecore_event_generic_free;
192 return _ecore_event_add(type, ev, func_free, data);
196 * Delete an event from the queue.
197 * @param event The event handle to delete
198 * @return The data pointer originally set for the event free function
200 * This deletes the event @p event from the event queue, and returns the
201 * @p data parameer originally set when adding it with ecore_event_add(). This
202 * does not immediately call the free function, and it may be called later on
203 * cleanup, and so if the free function depends on the data pointer to work,
204 * you should defer cleaning of this till the free function is called later.
207 ecore_event_del(Ecore_Event *event)
209 if (!ECORE_MAGIC_CHECK(event, ECORE_MAGIC_EVENT))
211 ECORE_MAGIC_FAIL(event, ECORE_MAGIC_EVENT, "ecore_event_del");
214 EINA_SAFETY_ON_TRUE_RETURN_VAL(event->delete_me, NULL);
215 event->delete_me = 1;
220 * Allocate a new event type id sensibly and return the new id.
221 * @return A new event type id.
223 * This function allocates a new event type id and returns it. Once an event
224 * type has been allocated it can never be de-allocated during the life of
225 * the program. There is no guarantee of the contents of this event ID, or how
226 * it is calculated, except that the ID will be unique to the current instance
230 ecore_event_type_new(void)
233 return event_id_max - 1;
237 * Add a filter the current event queue.
238 * @param func_start Function to call just before filtering and return data
239 * @param func_filter Function to call on each event
240 * @param func_end Function to call after the queu has been filtered
241 * @param data Data to pass to the filter functions
242 * @return A filter handle
244 * This adds a filter to call callbacks to loop through the event queue and
245 * filter events out of the queue. On failure NULL is returned. On success a
246 * Filter handle is returned. Filters are called on the queue just before
247 * Event handler processing to try and remove redundant events. Just as
248 * processing starts @p func_start is called and passed the @p data pointer.
249 * This function returns a pointer that is used as loop_data that is now passed to
250 * @p func_filter as loop_data. @p func_filter is also passed @p data and the
251 * event type and private event structure. If this callback returns 0, the
252 * event is removed from the queue. If it returns 1, the event is kept. When
253 * processing is finished @p func_end is called and is passed the loop_data
254 * and @p data pointer to clean up.
256 EAPI Ecore_Event_Filter *
257 ecore_event_filter_add(Ecore_Data_Cb func_start, Ecore_Filter_Cb func_filter, Ecore_End_Cb func_end, const void *data)
259 Ecore_Event_Filter *ef;
261 if (!func_filter) return NULL;
262 ef = calloc(1, sizeof(Ecore_Event_Filter));
263 if (!ef) return NULL;
264 ECORE_MAGIC_SET(ef, ECORE_MAGIC_EVENT_FILTER);
265 ef->func_start = func_start;
266 ef->func_filter = func_filter;
267 ef->func_end = func_end;
268 ef->data = (void *)data;
269 event_filters = (Ecore_Event_Filter *) eina_inlist_append(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(ef));
274 * Delete an event filter.
275 * @param ef The event filter handle
276 * @return The data set for the filter
278 * Delete a filter that has been added by its @p ef handle. On success this
279 * will return the data pointer set when this filter was added. On failure
283 ecore_event_filter_del(Ecore_Event_Filter *ef)
285 if (!ECORE_MAGIC_CHECK(ef, ECORE_MAGIC_EVENT_FILTER))
287 ECORE_MAGIC_FAIL(ef, ECORE_MAGIC_EVENT_FILTER, "ecore_event_filter_del");
290 EINA_SAFETY_ON_TRUE_RETURN_VAL(ef->delete_me, NULL);
292 event_filters_delete_me = 1;
297 * Return the current event type being handled.
298 * @return The current event type being handled if inside a handler callback
300 * If the program is currently inside an Ecore event handler callback this
301 * will return the type of the current event being processed. If Ecore is
302 * not inside an event handler, ECORE_EVENT_NONE is returned.
304 * This is useful when certain Ecore modules such as Ecore_Evas "swallow"
305 * events and not all the original information is passed on. In special cases
306 * this extra information may be useful or needed and using this call can let
307 * the program know if the event type being handled is one it wants to get more
311 ecore_event_current_type_get(void)
313 return ecore_raw_event_type;
317 * Return the current event type pointer handled.
318 * @return The current event pointer being handled if inside a handler callback
320 * If the program is currently inside an Ecore event handler callback this
321 * will return the pointer of the current event being processed. If Ecore is
322 * not inside an event handler, NULL will be returned.
324 * This is useful when certain Ecore modules such as Ecore_Evas "swallow"
325 * events and not all the original information is passed on. In special cases
326 * this extra information may be useful or needed and using this call can let
327 * the program access the event data if the type of the event is handled by
331 ecore_event_current_event_get(void)
333 return ecore_raw_event_event;
337 _ecore_event_shutdown(void)
340 Ecore_Event_Handler *eh;
341 Ecore_Event_Filter *ef;
343 while (events) _ecore_event_del(events);
344 event_current = NULL;
345 for (i = 0; i < event_handlers_num; i++)
347 while ((eh = event_handlers[i]))
349 event_handlers[i] = (Ecore_Event_Handler *) eina_inlist_remove(EINA_INLIST_GET(event_handlers[i]), EINA_INLIST_GET(event_handlers[i]));
350 ECORE_MAGIC_SET(eh, ECORE_MAGIC_NONE);
351 if (!eh->delete_me) free(eh);
354 EINA_LIST_FREE(event_handlers_delete_list, eh)
356 if (event_handlers) free(event_handlers);
357 event_handlers = NULL;
358 event_handlers_num = 0;
359 event_handlers_alloc_num = 0;
360 while ((ef = event_filters))
362 event_filters = (Ecore_Event_Filter *) eina_inlist_remove(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(event_filters));
363 ECORE_MAGIC_SET(ef, ECORE_MAGIC_NONE);
366 event_filters_delete_me = 0;
367 event_filter_current = NULL;
368 event_filter_event_current = NULL;
372 _ecore_event_exist(void)
375 EINA_INLIST_FOREACH(events, e)
376 if (!e->delete_me) return 1;
381 _ecore_event_add(int type, void *ev, Ecore_End_Cb func_free, void *data)
385 e = calloc(1, sizeof(Ecore_Event));
387 ECORE_MAGIC_SET(e, ECORE_MAGIC_EVENT);
390 e->func_free = func_free;
394 purge_events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(purge_events), EINA_INLIST_GET(e));
399 events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(events), EINA_INLIST_GET(e));
406 _ecore_event_del(Ecore_Event *event)
411 if (event->func_free) event->func_free(event->data, event->event);
412 events = (Ecore_Event *) eina_inlist_remove(EINA_INLIST_GET(events), EINA_INLIST_GET(event));
413 ECORE_MAGIC_SET(event, ECORE_MAGIC_NONE);
420 _ecore_event_purge_deleted(void)
422 Ecore_Event *itr = events;
427 Ecore_Event *next = (Ecore_Event *)EINA_INLIST_GET(itr)->next;
428 if ((!itr->references) && (itr->delete_me))
429 _ecore_event_del(itr);
435 Ecore_Event *e = purge_events;
436 purge_events = (Ecore_Event *)eina_inlist_remove(EINA_INLIST_GET(purge_events), EINA_INLIST_GET(purge_events));
437 events = (Ecore_Event *)eina_inlist_append(EINA_INLIST_GET(events), EINA_INLIST_GET(e));
442 _ecore_event_filters_apply()
445 if (!event_filter_current)
447 /* regular main loop, start from head */
448 event_filter_current = event_filters;
452 /* recursive main loop, continue from where we were */
453 event_filter_current = (Ecore_Event_Filter *)EINA_INLIST_GET(event_filter_current)->next;
456 while (event_filter_current)
458 Ecore_Event_Filter *ef = event_filter_current;
465 ef->loop_data = ef->func_start(ef->data);
467 if (!event_filter_event_current)
469 /* regular main loop, start from head */
470 event_filter_event_current = events;
474 /* recursive main loop, continue from where we were */
475 event_filter_event_current = (Ecore_Event *)EINA_INLIST_GET(event_filter_event_current)->next;
478 while (event_filter_event_current)
480 Ecore_Event *e = event_filter_event_current;
482 if (!ef->func_filter(ef->data, ef->loop_data,
488 if (event_filter_event_current) /* may have changed in recursive main loops */
489 event_filter_event_current = (Ecore_Event *)EINA_INLIST_GET(event_filter_event_current)->next;
492 ef->func_end(ef->data, ef->loop_data);
497 if (event_filter_current) /* may have changed in recursive main loops */
498 event_filter_current = (Ecore_Event_Filter *)EINA_INLIST_GET(event_filter_current)->next;
500 if (event_filters_delete_me)
502 int deleted_in_use = 0;
503 Ecore_Event_Filter *l;
504 for (l = event_filters; l;)
506 Ecore_Event_Filter *ef = l;
507 l = (Ecore_Event_Filter *) EINA_INLIST_GET(l)->next;
516 event_filters = (Ecore_Event_Filter *) eina_inlist_remove(EINA_INLIST_GET(event_filters), EINA_INLIST_GET(ef));
517 ECORE_MAGIC_SET(ef, ECORE_MAGIC_NONE);
522 event_filters_delete_me = 0;
526 _ecore_event_call(void)
528 Eina_List *l, *l_next;
529 Ecore_Event_Handler *eh;
531 _ecore_event_filters_apply();
535 /* regular main loop, start from head */
536 event_current = events;
537 event_handler_current = NULL;
540 while (event_current)
542 Ecore_Event *e = event_current;
543 int handle_count = 0;
547 event_current = (Ecore_Event *)EINA_INLIST_GET(event_current)->next;
551 ecore_raw_event_type = e->type;
552 ecore_raw_event_event = e->event;
554 if ((e->type >= 0) && (e->type < event_handlers_num))
556 if (!event_handler_current)
558 /* regular main loop, start from head */
559 event_handler_current = event_handlers[e->type];
563 /* recursive main loop, continue from where we were */
564 event_handler_current = (Ecore_Event_Handler *)EINA_INLIST_GET(event_handler_current)->next;
567 while ((event_handler_current) && (!e->delete_me))
569 Ecore_Event_Handler *eh = event_handler_current;
577 ret = eh->func(eh->data, e->type, e->event);
582 event_handler_current = NULL;
583 break; /* 0 == "call no further handlers" */
587 if (event_handler_current) /* may have changed in recursive main loops */
588 event_handler_current = (Ecore_Event_Handler *)EINA_INLIST_GET(event_handler_current)->next;
591 /* if no handlers were set for EXIT signal - then default is */
592 /* to quit the main loop */
593 if ((e->type == ECORE_EVENT_SIGNAL_EXIT) && (handle_count == 0))
594 ecore_main_loop_quit();
598 if (event_current) /* may have changed in recursive main loops */
599 event_current = (Ecore_Event *)EINA_INLIST_GET(event_current)->next;
602 ecore_raw_event_type = ECORE_EVENT_NONE;
603 ecore_raw_event_event = NULL;
605 _ecore_event_purge_deleted();
607 EINA_LIST_FOREACH_SAFE(event_handlers_delete_list, l, l_next, eh)
609 if (eh->references) continue;
611 event_handlers_delete_list = eina_list_remove_list(event_handlers_delete_list, l);
613 event_handlers[eh->type] = (Ecore_Event_Handler *) eina_inlist_remove(EINA_INLIST_GET(event_handlers[eh->type]), EINA_INLIST_GET(eh));
614 ECORE_MAGIC_SET(eh, ECORE_MAGIC_NONE);
620 _ecore_event_signal_user_new(void)
622 Ecore_Event_Signal_User *e;
624 e = calloc(1, sizeof(Ecore_Event_Signal_User));
629 _ecore_event_signal_hup_new(void)
631 Ecore_Event_Signal_Hup *e;
633 e = calloc(1, sizeof(Ecore_Event_Signal_Hup));
638 _ecore_event_signal_exit_new(void)
640 Ecore_Event_Signal_Exit *e;
642 e = calloc(1, sizeof(Ecore_Event_Signal_Exit));
647 _ecore_event_signal_power_new(void)
649 Ecore_Event_Signal_Power *e;
651 e = calloc(1, sizeof(Ecore_Event_Signal_Power));
656 _ecore_event_signal_realtime_new(void)
658 return calloc(1, sizeof(Ecore_Event_Signal_Realtime));