1 files changed, 104 insertions, 0 deletions

diff --git a/libraries/elementary/src/examples/efl_thread_5.c b/libraries/elementary/src/examples/efl_thread_5.c
new file mode 100644
index 0000000..4e53dd0
--- /dev/null
+++ b/libraries/elementary/src/examples/efl_thread_5.c
@@ -0,0 +1,104 @@
+//Compile with:
+//gcc -o efl_thread_5 efl_thread_5.c -g `pkg-config --cflags --libs elementary`
+#include <Elementary.h>
+
+static Ecore_Thread *thr = NULL;
+
+static Evas_Object *win = NULL;
+static Evas_Object *rect = NULL;
+
+struct info
+{
+   double x, y;
+};
+
+// BEGIN - code running in my custom thread instance
+//
+static void
+th_do(void *data, Ecore_Thread *th)
+{
+   double t = 0.0;
+
+   // inside our "do" function for the ecore thread, lets do the real work
+   for (;;)
+     {
+        struct info *inf = malloc(sizeof(struct info));
+
+        if (inf)
+          {
+             inf->x = 200 + (200 * sin(t));
+             inf->y = 200 + (200 * cos(t));
+             // now we have recorded the timepoint we pass it as feedback
+             // back to the mainloop. it will free it when done
+             ecore_thread_feedback(th, inf);
+          }
+        // and sleep and loop
+        usleep(1000);
+        t += 0.02;
+        // in case someone has asked us to cancel - then cancel this loop
+        // co-operatively (cancelling is co-operative)
+        if (ecore_thread_check(th)) break;
+     }
+}
+//
+// END - code running in my custom thread instance
+
+static void // when mainloop gets feedback from worker
+th_feedback(void *data, Ecore_Thread *th, void *msg)
+{
+   struct info *inf = msg;
+   evas_object_move(rect, inf->x - 50, inf->y - 50);
+   free(inf);
+}
+
+// BONUS (optional): called after th_do returns and has NOT been cancelled
+static void th_end(void *data, Ecore_Thread *th) { printf("thread ended\n"); }
+// BONUS (optional): called in mainloop AFTER thread has finished cancelling
+static void th_cancel(void *data, Ecore_Thread *th) { printf("thread cancelled\n"); }
+
+// just test cancelling the thread worker
+static void
+down(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+   ecore_thread_cancel(thr);
+}
+
+EAPI_MAIN int
+elm_main(int argc, char **argv)
+{
+   Evas_Object *o, *bg;
+
+   win = elm_win_add(NULL, "efl-thread-5", ELM_WIN_BASIC);
+   elm_win_title_set(win, "EFL Thread 5");
+   elm_win_autodel_set(win, EINA_TRUE);
+   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
+   evas_object_resize(win, 400, 400);
+   evas_object_show(win);
+
+   bg = elm_bg_add(win);
+   evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+   elm_win_resize_object_add(win, bg);
+   evas_object_show(bg);
+
+   o = evas_object_rectangle_add(evas_object_evas_get(win));
+   evas_object_color_set(o, 50, 80, 180, 255);
+   evas_object_resize(o, 100, 100);
+   evas_object_show(o);
+   evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, down, NULL);
+   rect = o;
+
+   // explicitly create ecore thread to do some "work on the side" and pass
+   // in NULL as data ptr to callbacks and true at the end means to actually
+   // make a new thread and not use the thread pool (there is a thread pool
+   // with as many thread workers as there are cpu's so this means you do not
+   // overload the cpu's with more work than you actually have processing
+   // units *IF* your threads do actually spend their time doing actual
+   // heavy computation)
+   thr = ecore_thread_feedback_run(th_do, th_feedback, th_end, th_cancel,
+                                   NULL, EINA_TRUE);
+   elm_run();
+   elm_shutdown();
+
+   return 0;
+}
+ELM_MAIN()