From dd7595a3475407a7fa96a97393bae8c5220e8762 Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Wed, 4 Jan 2012 18:41:13 +1000 Subject: Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje. Note that embryo wont be used, but I'm not sure yet if you can build edje without it. --- .../edje/src/examples/edje-signals-messages.c | 230 +++++++++++++++++++++ 1 file changed, 230 insertions(+) create mode 100644 libraries/edje/src/examples/edje-signals-messages.c (limited to 'libraries/edje/src/examples/edje-signals-messages.c') diff --git a/libraries/edje/src/examples/edje-signals-messages.c b/libraries/edje/src/examples/edje-signals-messages.c new file mode 100644 index 0000000..2345738 --- /dev/null +++ b/libraries/edje/src/examples/edje-signals-messages.c @@ -0,0 +1,230 @@ +/** + * Simple Edje example illustrating the Edje signals and messages + * + * You'll need at least one Evas engine built for it (excluding the + * buffer one). See stdout/stderr for output. + * + * @verbatim + * gcc -o edje-signals-messages edje-signals-messages.c `pkg-config --libs --cflags evas ecore ecore-evas edje` + * @endverbatim + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#else +#define PACKAGE_EXAMPLES_DIR "." +#define __UNUSED__ +#endif + +#include +#include +#include +#include + +#define WIDTH (300) +#define HEIGHT (300) + +#define MSG_COLOR 1 +#define MSG_TEXT 2 + +static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png"; +static const char *edje_file_path = \ + PACKAGE_EXAMPLES_DIR "/signals-messages.edj"; + +static Ecore_Evas *ee; +static Evas_Object *edje_obj; +static Eina_Bool right_rect_show = EINA_TRUE; + +static const char *commands = \ + "commands are:\n" + "\tt - toggle right rectangle's visibility\n" + "\th - print help\n"; + +static void +_on_keydown(void *data __UNUSED__, + Evas *evas __UNUSED__, + Evas_Object *o __UNUSED__, + void *einfo) +{ + Evas_Event_Key_Down *ev = einfo; + + if (strcmp(ev->keyname, "h") == 0) /* print help */ + { + fprintf(stdout, commands); + return; + } + + if (strcmp(ev->keyname, "t") == 0) /* toggle right rectangle's visibility */ + { + char buf[1024]; + + right_rect_show = !right_rect_show; + snprintf(buf, sizeof(buf), "part_right,%s", + right_rect_show ? "show" : "hide"); + + printf("emitting %s\n", buf); + + edje_object_signal_emit(edje_obj, buf, ""); + + return; + } +} + +static void +_on_delete(Ecore_Evas *ee __UNUSED__) +{ + ecore_main_loop_quit(); +} + +/* print signals coming from theme */ +static void +_sig_print(const char *emission, + const char *source) +{ + fprintf(stdout, "Signal %s coming from part %s!\n", emission, source); +} + +static void +_mouse_wheel_cb(void *data __UNUSED__, + Evas_Object *obj __UNUSED__, + const char *emission, + const char *source) +{ + _sig_print(emission, source); +} + +/* mouse over signals */ +static void +_mouse_over_cb(void *data __UNUSED__, + Evas_Object *obj __UNUSED__, + const char *emission, + const char *source) +{ + int i; + + _sig_print(emission, source); + + Edje_Message_Int_Set *msg = malloc(sizeof(*msg) + 3 * sizeof(int)); + msg->count = 4; + for (i = 0; i < 4; i++) + msg->val[i] = rand() % 256; + + edje_object_message_send(edje_obj, EDJE_MESSAGE_INT_SET, MSG_COLOR, msg); + + free(msg); +} + +/* print out received message string */ +static void +_message_handle(void *data __UNUSED__, + Evas_Object *obj __UNUSED__, + Edje_Message_Type type, + int id, + void *msg) +{ + Edje_Message_String *m; + + if (type != EDJE_MESSAGE_STRING) return; + if (id != MSG_TEXT) return; + + m = msg; + + fprintf(stdout, "String message received: %s\n", m->str); +} + +int +main(void) +{ + Evas_Object *border, *bg; + Evas *evas; + + srand(time(NULL)); + + if (!ecore_evas_init()) + return EXIT_FAILURE; + + if (!edje_init()) + return EXIT_FAILURE; + + /* this will give you a window with an Evas canvas under the first + * engine available */ + ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL); + if (!ee) + goto error; + + ecore_evas_callback_delete_request_set(ee, _on_delete); + ecore_evas_title_set(ee, "Edje Basics Example"); + ecore_evas_show(ee); + + evas = ecore_evas_get(ee); + + bg = evas_object_rectangle_add(evas); + evas_object_color_set(bg, 255, 255, 255, 255); /* white bg */ + evas_object_move(bg, 0, 0); /* at canvas' origin */ + evas_object_resize(bg, WIDTH, HEIGHT); /* covers full canvas */ + evas_object_show(bg); + ecore_evas_object_associate(ee, bg, ECORE_EVAS_OBJECT_ASSOCIATE_BASE); + + evas_object_focus_set(bg, EINA_TRUE); + evas_object_event_callback_add( + bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL); + + edje_obj = edje_object_add(evas); + + if (!edje_object_file_set(edje_obj, edje_file_path, "example_group")) + { + int err = edje_object_load_error_get(edje_obj); + const char *errmsg = edje_load_error_str(err); + fprintf(stderr, "Could not load 'example_group' from " + "signals-messages.edj: %s\n", errmsg); + + evas_object_del(edje_obj); + goto error_edj; + } + + edje_object_signal_callback_add(edje_obj, "mouse,wheel,*", "part_left", + _mouse_wheel_cb, NULL); + + edje_object_signal_callback_add(edje_obj, "mouse,over", "part_right", + _mouse_over_cb, NULL); + + edje_object_message_handler_set(edje_obj, _message_handle, NULL); + + evas_object_move(edje_obj, 20, 20); + evas_object_resize(edje_obj, WIDTH - 40, HEIGHT - 40); + evas_object_show(edje_obj); + + /* this is a border around the Edje object above, here just to + * emphasize its geometry */ + border = evas_object_image_filled_add(evas); + evas_object_image_file_set(border, border_img_path, NULL); + evas_object_image_border_set(border, 2, 2, 2, 2); + evas_object_image_border_center_fill_set(border, EVAS_BORDER_FILL_NONE); + + evas_object_resize(border, WIDTH - 40 + 4, HEIGHT - 40 + 4); + evas_object_move(border, 20 - 2, 20 - 2); + evas_object_repeat_events_set(border, EINA_TRUE); + evas_object_show(border); + + fprintf(stdout, commands); + ecore_main_loop_begin(); + + ecore_evas_free(ee); + ecore_evas_shutdown(); + edje_shutdown(); + return 0; + +error: + fprintf(stderr, "You got to have at least one Evas engine built" + " and linked up to ecore-evas for this example to run" + " properly.\n"); + ecore_evas_shutdown(); + return -1; + +error_edj: + fprintf(stderr, "Failed to load signals-messages.edj!\n"); + + ecore_evas_shutdown(); + return -2; +} + -- cgit v1.1