efl

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/**
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 * Simple Edje example illustrating the Edje signals and messages
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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). See stdout/stderr for output.
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 *
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 * @verbatim
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 * edje_cc signals-messages.edc && gcc -o edje-signals-messages edje-signals-messages.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 PACKAGE_EXAMPLES_DIR "."
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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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#include <stdio.h>
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#define WIDTH     (300)
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#define HEIGHT    (300)
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#define MSG_COLOR 1
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#define MSG_TEXT  2
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static const char commands[] = \
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  "commands are:\n"
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  "\tt - toggle right rectangle's visibility\n"
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  "\tEsc - exit\n"
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  "\th - print help\n";
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static Eina_Bool right_rect_show = EINA_TRUE;
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static void
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_on_keydown(void        *data,
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            Evas        *evas EINA_UNUSED,
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            Evas_Object *o EINA_UNUSED,
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            void        *einfo)
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{
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   Evas_Event_Key_Down *ev;
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   Evas_Object         *edje_obj;
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   ev = (Evas_Event_Key_Down *)einfo;
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   edje_obj = (Evas_Object *)data;
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   if (!strcmp(ev->key, "h")) /* print help */
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     {
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        printf(commands);
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        return;
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     }
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   else if (!strcmp(ev->key, "t")) /* toggle right rectangle's visibility */
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     {
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        char buf[1024];
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        right_rect_show = !right_rect_show;
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        snprintf(buf, sizeof(buf), "part_right,%s",
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                 right_rect_show ? "show" : "hide");
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        printf("emitting %s\n", buf);
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        edje_object_signal_emit(edje_obj, buf, "");
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        return;
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     }
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   else if (!strcmp(ev->key, "Escape"))
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     ecore_main_loop_quit();
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   else
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     {
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        printf("unhandled key: %s\n", ev->key);
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        printf(commands);
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     }
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}
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static void
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_on_delete(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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/* print signals coming from theme */
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static void
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_sig_print(const char *emission,
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           const char *source)
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{
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   printf("Signal %s coming from part %s!\n", emission, source);
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}
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static void
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_on_mouse_wheel(void        *data EINA_UNUSED,
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                  Evas_Object *obj EINA_UNUSED,
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                  const char  *emission,
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                  const char  *source)
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{
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   _sig_print(emission, source);
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}
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/* mouse over signals */
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static void
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_on_mouse_over(void        *data EINA_UNUSED,
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               Evas_Object *edje_obj,
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               const char  *emission,
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               const char  *source)
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{
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   int i;
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   _sig_print(emission, source);
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   Edje_Message_Int_Set *msg = malloc(sizeof(*msg) + 3 * sizeof(int));
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   msg->count = 4;
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   for (i = 0; i < 4; i++)
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     msg->val[i] = rand() % 256;
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   edje_object_message_send(edje_obj, EDJE_MESSAGE_INT_SET, MSG_COLOR, msg);
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   free(msg);
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}
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/* print out received message string */
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static void
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_message_handle(void             *data EINA_UNUSED,
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                Evas_Object      *obj EINA_UNUSED,
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                Edje_Message_Type type,
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                int               id,
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                void             *msg)
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{
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   Edje_Message_String *m;
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   if (type != EDJE_MESSAGE_STRING) return;
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   if (id != MSG_TEXT) return;
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   m = msg;
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   printf("String message received: %s\n", m->str);
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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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   const char  *img_file = PACKAGE_DATA_DIR"/red.png";
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   const char  *edje_file = PACKAGE_DATA_DIR"/signals-messages.edj";
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   Ecore_Evas  *ee;
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   Evas        *evas;
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   Evas_Object *bg;
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   Evas_Object *edje_obj;
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   Evas_Object *border;
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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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   /* this will give you a window with an Evas canvas under the first
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    * engine available */
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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_delete_request_set(ee, _on_delete);
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   ecore_evas_title_set(ee, "Edje Signals and Messages 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); /* white bg */
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   evas_object_move(bg, 0, 0); /* at canvas' origin */
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   evas_object_resize(bg, WIDTH, HEIGHT); /* covers full canvas */
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   evas_object_show(bg);
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   evas_object_focus_set(bg, EINA_TRUE);
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   ecore_evas_object_associate(ee, bg, ECORE_EVAS_OBJECT_ASSOCIATE_BASE);
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   edje_obj = edje_object_add(evas);
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   if (!edje_object_file_set(edje_obj, edje_file, "example_group"))
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     {
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        int err = edje_object_load_error_get(edje_obj);
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        const char *errmsg = edje_load_error_str(err);
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        fprintf(stderr, "Could not load 'example_group' from "
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                        "signals-messages.edj: %s\n", errmsg);
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        evas_object_del(edje_obj);
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        goto shutdown_edje;
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     }
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   edje_object_signal_callback_add(edje_obj, "mouse,wheel,*", "part_left",
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                                   _on_mouse_wheel, NULL);
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   edje_object_signal_callback_add(edje_obj, "mouse,over", "part_right",
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                                   _on_mouse_over, NULL);
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   edje_object_message_handler_set(edje_obj, _message_handle, NULL);
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   evas_object_move(edje_obj, 20, 20);
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   evas_object_resize(edje_obj, WIDTH - 40, HEIGHT - 40);
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   evas_object_show(edje_obj);
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   evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, edje_obj);
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   /* this is a border around the Edje object above, here just to
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    * emphasize its geometry */
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   border = evas_object_image_filled_add(evas);
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   evas_object_image_file_set(border, img_file, NULL);
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   evas_object_image_border_set(border, 2, 2, 2, 2);
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   evas_object_image_border_center_fill_set(border, EVAS_BORDER_FILL_NONE);
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   evas_object_resize(border, WIDTH - 40 + 4, HEIGHT - 40 + 4);
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   evas_object_move(border, 20 - 2, 20 - 2);
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   evas_object_repeat_events_set(border, EINA_TRUE);
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   evas_object_show(border);
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   printf(commands);
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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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