efl

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/**
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 * Edje example demonstrating how to use multiseat features following
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 * a dynamic approach.
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 *
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 * It's an example of how themes can be implemented even if the number
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 * of seats using the UI is unknown.
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 *
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 * You'll need at least one Evas engine built for it (excluding the
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 * buffer one) that supports multiseat. It may be wayland or
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 * X11 with VNC support. Using other engines will lead you to a
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 * situation where all seats are reported as the same one ("default").
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 *
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 * @verbatim
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 * edje_cc dynamic-multiseat.edc && gcc -o edje-dynamic-multiseat edje-dynamic-multiseat.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
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 * @endverbatim
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 */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#else
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# define EINA_UNUSED
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#endif
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#ifndef PACKAGE_DATA_DIR
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#define PACKAGE_DATA_DIR "."
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#endif
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#include <Ecore.h>
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#include <Ecore_Evas.h>
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#include <Edje.h>
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#define WIDTH 400
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#define HEIGHT 400
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static const char *GROUPNAME = "example/main";
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static const char *EDJE_FILE = PACKAGE_DATA_DIR"/dynamic_multiseat.edj";
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static void
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_on_destroy(Ecore_Evas *ee EINA_UNUSED)
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{
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   ecore_main_loop_quit();
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}
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static void
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_on_canvas_resize(Ecore_Evas *ee)
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{
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   Evas_Object *bg;
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   Evas_Object *edje_obj;
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   int w, h;
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   bg = ecore_evas_data_get(ee, "background");
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   edje_obj = ecore_evas_data_get(ee, "edje_obj");
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   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
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   evas_object_resize(bg, w, h);
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   evas_object_resize(edje_obj, w, h);
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}
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static void
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_edje_seat_cb(void *data EINA_UNUSED, Evas_Object *o EINA_UNUSED, const char *emission, const char *source EINA_UNUSED)
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{
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   const char *sig;
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   sig = emission + strlen("seat,");
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   printf("Device %s\n", sig);
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}
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static void
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_print_msg_cb(void *data EINA_UNUSED, Evas_Object *o EINA_UNUSED, const char *emission, const char *source EINA_UNUSED)
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{
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   printf("Info: %s\n", emission);
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}
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int
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main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
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{
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   Evas_Object *edje_obj, *bg;
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   Ecore_Evas *ee;
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   Evas *evas;
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   if (!ecore_evas_init())
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     return EXIT_FAILURE;
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   if (!edje_init())
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     goto shutdown_ecore_evas;
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   ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
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   if (!ee) goto shutdown_edje;
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   ecore_evas_callback_destroy_set(ee, _on_destroy);
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   ecore_evas_callback_resize_set(ee, _on_canvas_resize);
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   ecore_evas_title_set(ee, "Edje Dynamic Multiseat Example");
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   evas = ecore_evas_get(ee);
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   bg = evas_object_rectangle_add(evas);
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   evas_object_color_set(bg, 255, 255, 255, 255);
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   evas_object_resize(bg, WIDTH, HEIGHT);
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   evas_object_show(bg);
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   ecore_evas_data_set(ee, "background", bg);
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   edje_obj = edje_object_add(evas);
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   if (!edje_object_file_set(edje_obj, EDJE_FILE, GROUPNAME))
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     printf("failed to set file %s.\n", EDJE_FILE);
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   evas_object_move(edje_obj, 0, 0);
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   evas_object_resize(edje_obj, WIDTH, HEIGHT);
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   evas_object_show(edje_obj);
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   ecore_evas_data_set(ee, "edje_obj", edje_obj);
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   edje_object_signal_callback_add(edje_obj, "seat,*", "",
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                                   _edje_seat_cb, NULL);
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   edje_object_signal_callback_add(edje_obj, "*", "theme",
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                                   _print_msg_cb, NULL);
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   printf("Running example on evas engine %s\n",
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          ecore_evas_engine_name_get(ee));
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   ecore_evas_show(ee);
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   ecore_main_loop_begin();
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   ecore_evas_free(ee);
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   ecore_evas_shutdown();
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   edje_shutdown();
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   return EXIT_SUCCESS;
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shutdown_edje:
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   edje_shutdown();
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shutdown_ecore_evas:
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   ecore_evas_shutdown();
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   return EXIT_FAILURE;
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}
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