174 lines
4.7 KiB
C
174 lines
4.7 KiB
C
/*
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* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
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*/
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#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_private.h"
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#include "Ecore.h"
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static int _ecore_animator(void *data);
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static Ecore_Timer *timer = NULL;
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static int animators_delete_me = 0;
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static Ecore_Animator *animators = NULL;
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static double animators_frametime = 1.0 / 30.0;
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/**
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* Add a animator to tick off at every animaton tick during main loop execution.
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* @param func The function to call when it ticks off
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* @param data The data to pass to the function
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* @return A handle to the new animator
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* @ingroup Ecore_Animator_Group
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*
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* This function adds a animator and returns its handle on success and NULL on
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* failure. The function @p func will be called every N seconds where N is the
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* frametime interval set by ecore_animator_frametime_set(). The function will
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* be passed the @p data pointer as its parameter.
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*
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* When the animator @p func is called, it must return a value of either 1 or 0.
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* If it returns 1 (or ECORE_CALLBACK_RENEW), it will be called again at the
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* next tick, or if it returns 0 (or ECORE_CALLBACK_CANCEL) it will be deleted
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* automatically making any references/handles for it invalid.
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*/
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EAPI Ecore_Animator *
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ecore_animator_add(int (*func) (void *data), const void *data)
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{
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Ecore_Animator *animator;
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if (!func) return NULL;
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animator = calloc(1, sizeof(Ecore_Animator));
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if (!animator) return NULL;
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ECORE_MAGIC_SET(animator, ECORE_MAGIC_ANIMATOR);
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animator->func = func;
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animator->data = (void *)data;
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animators = (Ecore_Animator *) eina_inlist_append(EINA_INLIST_GET(animators), EINA_INLIST_GET(animator));
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if (!timer)
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timer = ecore_timer_add(animators_frametime, _ecore_animator, NULL);
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return animator;
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}
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/**
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* Delete the specified animator from the animator list.
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* @param animator The animator to delete
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* @return The data pointer set for the animator
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* @ingroup Ecore_Animator_Group
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*
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* Delete the specified @p aqnimator from the set of animators that are executed
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* during main loop execution. This function returns the data parameter that
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* was being passed to the callback on success, or NULL on failure. After this
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* call returns the specified animator object @p animator is invalid and should not
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* be used again. It will not get called again after deletion.
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*/
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EAPI void *
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ecore_animator_del(Ecore_Animator *animator)
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{
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if (!ECORE_MAGIC_CHECK(animator, ECORE_MAGIC_ANIMATOR))
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{
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ECORE_MAGIC_FAIL(animator, ECORE_MAGIC_ANIMATOR,
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"ecore_animator_del");
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return NULL;
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}
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if (animator->delete_me) return animator->data;
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animator->delete_me = 1;
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animators_delete_me++;
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return animator->data;
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}
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/**
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* Set the animator call interval in seconds.
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* @param frametime The time in seconds in between animator ticks.
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*
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* This function sets the time interval (in seconds) inbetween animator ticks.
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*/
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EAPI void
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ecore_animator_frametime_set(double frametime)
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{
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if (frametime < 0.0) frametime = 0.0;
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if (animators_frametime == frametime) return;
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animators_frametime = frametime;
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if (timer)
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{
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ecore_timer_del(timer);
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timer = NULL;
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}
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if (animators)
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timer = ecore_timer_add(animators_frametime, _ecore_animator, NULL);
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}
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/**
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* Get the animator call interval in seconds.
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* @return The time in second in between animator ticks.
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*
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* this function retrieves the time inbetween animator ticks, in seconds.
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*/
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EAPI double
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ecore_animator_frametime_get(void)
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{
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return animators_frametime;
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}
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void
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_ecore_animator_shutdown(void)
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{
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if (timer)
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{
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ecore_timer_del(timer);
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timer = NULL;
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}
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while (animators)
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{
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Ecore_Animator *animator;
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animator = animators;
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animators = (Ecore_Animator *) eina_inlist_remove(EINA_INLIST_GET(animators), EINA_INLIST_GET(animators));
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ECORE_MAGIC_SET(animator, ECORE_MAGIC_NONE);
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free(animator);
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}
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}
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static int
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_ecore_animator(void *data __UNUSED__)
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{
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Ecore_Animator *animator;
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EINA_INLIST_FOREACH(animators, animator)
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{
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if (!animator->delete_me)
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{
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if (!animator->func(animator->data))
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{
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animator->delete_me = 1;
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animators_delete_me++;
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}
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}
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}
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if (animators_delete_me)
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{
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Ecore_Animator *l;
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for(l = animators; l;)
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{
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animator = l;
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l = (Ecore_Animator *) EINA_INLIST_GET(l)->next;
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if (animator->delete_me)
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{
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animators = (Ecore_Animator *) eina_inlist_remove(EINA_INLIST_GET(animators), EINA_INLIST_GET(animator));
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ECORE_MAGIC_SET(animator, ECORE_MAGIC_NONE);
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free(animator);
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animators_delete_me--;
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if (animators_delete_me == 0) break;
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}
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}
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}
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if (!animators)
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{
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timer = NULL;
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return 0;
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}
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return 1;
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}
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