forked from enlightenment/efl
121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
//Compile with:
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//gcc -o efl_thread_4 efl_thread_4.c -g `pkg-config --cflags --libs elementary`
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#include <Elementary.h>
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#include <pthread.h>
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static Evas_Object *win = NULL;
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static Evas_Object *rect = NULL;
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struct info
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{
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double x, y;
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};
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static void my_thread_mainloop_code(void *data);
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static pthread_t thread_id;
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static pthread_mutex_t th_lock;
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static int th_exit = 0;
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// BEGIN - code running in my custom pthread instance
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//
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static void *
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my_thread_run(void *arg)
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{
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double t = 0.0;
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// inside the pthread function lets loop forever incrimenting a time point
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for (;;)
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{
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struct info *inf = malloc(sizeof(struct info));
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int do_exit;
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if (inf)
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{
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inf->x = 200 + (200 * sin(t));
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inf->y = 200 + (200 * cos(t));
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// now call a function in the mainloop and pass it our allocated
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// data that it will free when it gets it
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ecore_main_loop_thread_safe_call_async
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(my_thread_mainloop_code, inf);
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}
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// and sleep and loop
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usleep(1000);
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t += 0.02;
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// in case someone has asked us to cancel - then cancel this loop
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// co-operatively (cancelling is co-operative)
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pthread_mutex_lock(&th_lock);
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do_exit = th_exit;
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pthread_mutex_unlock(&th_lock);
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if (do_exit) break;
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}
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return NULL;
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}
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//
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// END - code running in my custom pthread instance
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static void
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my_thread_new(void)
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{
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pthread_attr_t attr;
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pthread_mutex_init(&th_lock, NULL);
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if (pthread_attr_init(&attr) != 0)
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perror("pthread_attr_init");
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if (pthread_create(&thread_id, &attr, my_thread_run, NULL) != 0)
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perror("pthread_create");
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}
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static void
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my_thread_mainloop_code(void *data)
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{
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struct info *inf = data;
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evas_object_move(rect, inf->x - 50, inf->y - 50);
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free(inf);
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}
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// just test cancelling the thread
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static void
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down(void *data, Evas *e, Evas_Object *obj, void *event_info)
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{
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pthread_mutex_lock(&th_lock);
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th_exit = 1;
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pthread_mutex_unlock(&th_lock);
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}
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EAPI_MAIN int
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elm_main(int argc, char **argv)
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{
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Evas_Object *o, *bg;
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win = elm_win_add(NULL, "efl-thread-4", ELM_WIN_BASIC);
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elm_win_title_set(win, "EFL Thread 4");
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elm_win_autodel_set(win, EINA_TRUE);
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elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
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evas_object_resize(win, 400, 400);
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evas_object_show(win);
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bg = elm_bg_add(win);
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evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
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elm_win_resize_object_add(win, bg);
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evas_object_show(bg);
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o = evas_object_rectangle_add(evas_object_evas_get(win));
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evas_object_color_set(o, 50, 80, 180, 255);
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evas_object_resize(o, 100, 100);
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evas_object_show(o);
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// new in the examples - we have a mouse down on the blue box cancel
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// the thread
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evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, down, NULL);
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rect = o;
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// create custom thread to do some "work on the side"
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my_thread_new();
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elm_run();
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elm_shutdown();
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return 0;
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}
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ELM_MAIN()
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