edje-signals-messages.c

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edje-signals-messages.c
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define PACKAGE_EXAMPLES_DIR "."
#define EINA_UNUSED
#endif
#ifndef PACKAGE_DATA_DIR
#define PACKAGE_DATA_DIR "."
#endif
#include <Ecore.h>
#include <Ecore_Evas.h>
#include <Edje.h>
#include <stdio.h>
#define WIDTH (300)
#define HEIGHT (300)
#define MSG_COLOR 1
#define MSG_TEXT 2
static const char commands[] = \
"commands are:\n"
"\tt - toggle right rectangle's visibility\n"
"\tEsc - exit\n"
"\th - print help\n";
static Eina_Bool right_rect_show = EINA_TRUE;
static void
_on_keydown(void *data,
Evas *evas EINA_UNUSED,
Evas_Object *o EINA_UNUSED,
void *einfo)
{
Evas_Event_Key_Down *ev;
Evas_Object *edje_obj;
ev = (Evas_Event_Key_Down *)einfo;
edje_obj = (Evas_Object *)data;
if (!strcmp(ev->key, "h")) /* print help */
{
printf(commands);
return;
}
else if (!strcmp(ev->key, "t")) /* 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;
}
else if (!strcmp(ev->key, "Escape"))
ecore_main_loop_quit();
else
{
printf("unhandled key: %s\n", ev->key);
printf(commands);
}
}
static void
_on_delete(Ecore_Evas *ee EINA_UNUSED)
{
ecore_main_loop_quit();
}
/* print signals coming from theme */
static void
_sig_print(const char *emission,
const char *source)
{
printf("Signal %s coming from part %s!\n", emission, source);
}
static void
_on_mouse_wheel(void *data EINA_UNUSED,
Evas_Object *obj EINA_UNUSED,
const char *emission,
const char *source)
{
_sig_print(emission, source);
}
/* mouse over signals */
static void
_on_mouse_over(void *data EINA_UNUSED,
Evas_Object *edje_obj,
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 EINA_UNUSED,
Evas_Object *obj EINA_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;
printf("String message received: %s\n", m->str);
}
int
main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
{
const char *img_file = PACKAGE_DATA_DIR"/red.png";
const char *edje_file = PACKAGE_DATA_DIR"/signals-messages.edj";
Ecore_Evas *ee;
Evas *evas;
Evas_Object *bg;
Evas_Object *edje_obj;
Evas_Object *border;
if (!ecore_evas_init())
return EXIT_FAILURE;
if (!edje_init())
goto shutdown_ecore_evas;
/* 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 shutdown_edje;
ecore_evas_callback_delete_request_set(ee, _on_delete);
ecore_evas_title_set(ee, "Edje Signals and Messages Example");
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);
evas_object_focus_set(bg, EINA_TRUE);
ecore_evas_object_associate(ee, bg, ECORE_EVAS_OBJECT_ASSOCIATE_BASE);
edje_obj = edje_object_add(evas);
if (!edje_object_file_set(edje_obj, edje_file, "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 shutdown_edje;
}
edje_object_signal_callback_add(edje_obj, "mouse,wheel,*", "part_left",
_on_mouse_wheel, NULL);
edje_object_signal_callback_add(edje_obj, "mouse,over", "part_right",
_on_mouse_over, 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);
evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, 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, img_file, 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);
printf(commands);
ecore_evas_show(ee);
ecore_main_loop_begin();
ecore_evas_free(ee);
ecore_evas_shutdown();
edje_shutdown();
return EXIT_SUCCESS;
shutdown_edje:
edje_shutdown();
shutdown_ecore_evas:
ecore_evas_shutdown();
return EXIT_FAILURE;
}
Ecore_Evas.h
Evas wrapper functions.
Edje.h
Edje Graphical Design Library.
EVAS_CALLBACK_KEY_DOWN
@ EVAS_CALLBACK_KEY_DOWN
Key Press Event.
Definition: Evas_Common.h:430
ecore_evas_init
EAPI int ecore_evas_init(void)
Inits the Ecore_Evas system.
Definition: ecore_evas.c:602
ecore_evas_title_set
EAPI void ecore_evas_title_set(Ecore_Evas *ee, const char *t)
Sets the title of an Ecore_Evas' window.
Definition: ecore_evas.c:1527
ecore_evas_callback_delete_request_set
EAPI void ecore_evas_callback_delete_request_set(Ecore_Evas *ee, Ecore_Evas_Event_Cb func)
Sets a callback for Ecore_Evas delete request events.
Definition: ecore_evas.c:1176
ecore_evas_show
EAPI void ecore_evas_show(Ecore_Evas *ee)
Shows an Ecore_Evas' window.
Definition: ecore_evas.c:1480
ecore_evas_get
EAPI Evas * ecore_evas_get(const Ecore_Evas *ee)
Gets an Ecore_Evas's Evas.
Definition: ecore_evas.c:1300
ecore_evas_new
EAPI Ecore_Evas * ecore_evas_new(const char *engine_name, int x, int y, int w, int h, const char *extra_options)
Creates a new Ecore_Evas based on engine name and common parameters.
Definition: ecore_evas.c:1039
ecore_evas_shutdown
EAPI int ecore_evas_shutdown(void)
Shuts down the Ecore_Evas system.
Definition: ecore_evas.c:666
ecore_evas_object_associate
EAPI Eina_Bool ecore_evas_object_associate(Ecore_Evas *ee, Evas_Object *obj, Ecore_Evas_Object_Associate_Flags flags)
Associates the given object to this ecore evas.
Definition: ecore_evas_util.c:223
ecore_evas_free
EAPI void ecore_evas_free(Ecore_Evas *ee)
Frees an Ecore_Evas.
Definition: ecore_evas.c:1083
ecore_main_loop_quit
void ecore_main_loop_quit(void)
Quits the main loop once all the events currently on the queue have been processed.
Definition: ecore_main.c:1321
ecore_main_loop_begin
void ecore_main_loop_begin(void)
Runs the application main loop.
Definition: ecore_main.c:1311
edje_shutdown
int edje_shutdown(void)
Shuts down the Edje library.
Definition: edje_main.c:262
edje_init
int edje_init(void)
Initializes the Edje library.
Definition: edje_main.c:35
edje_object_message_handler_set
void edje_object_message_handler_set(Evas_Object *obj, Edje_Message_Handler_Cb func, void *data)
Sets an Edje message handler function for a given Edje object.
Definition: edje_message_queue.c:1028
edje_object_message_send
void edje_object_message_send(Evas_Object *obj, Edje_Message_Type type, int id, void *msg)
Sends an (Edje) message to a given Edje object.
Definition: edje_message_queue.c:1016
Edje_Message_Type
Edje_Message_Type
Identifiers of Edje message types, which can be sent back and forth code and a given Edje object's th...
Definition: Edje_Legacy.h:571
EDJE_MESSAGE_INT_SET
@ EDJE_MESSAGE_INT_SET
A message with a list of integer numbers as value.
Definition: Edje_Legacy.h:586
EDJE_MESSAGE_STRING
@ EDJE_MESSAGE_STRING
A message with a string as value.
Definition: Edje_Legacy.h:574
edje_object_signal_emit
void edje_object_signal_emit(Evas_Object *obj, const char *emission, const char *source)
Sends/emits an Edje signal to a given Edje object.
Definition: edje_legacy.c:147
edje_object_load_error_get
Edje_Load_Error edje_object_load_error_get(const Eo *obj)
Gets the (last) file loading error for a given Edje object.
Definition: edje_legacy.c:15
edje_object_add
Evas_Object * edje_object_add(Evas *evas)
Instantiates a new Edje object.
Definition: edje_smart.c:22
edje_load_error_str
const char * edje_load_error_str(Edje_Load_Error error)
Converts the given Edje file load error code into a string describing it in English.
Definition: edje_load.c:108
edje_object_signal_callback_add
void edje_object_signal_callback_add(Evas_Object *obj, const char *emission, const char *source, Edje_Signal_Cb func, void *data)
Adds a callback for an arriving Edje signal, emitted by a given Edje object.
Definition: edje_legacy.c:85
edje_object_file_set
Eina_Bool edje_object_file_set(Evas_Object *obj, const char *file, const char *group)
Sets the EDJ file (and group within it) to load an Edje object's contents from.
Definition: edje_smart.c:467
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
Eina_Bool
unsigned char Eina_Bool
Type to mimic a boolean.
Definition: eina_types.h:527
EINA_UNUSED
#define EINA_UNUSED
Used to indicate that a function parameter is purposely unused.
Definition: eina_types.h:339
Evas
Eo Evas
An opaque handle to an Evas canvas.
Definition: Evas_Common.h:163
evas_object_show
EVAS_API void evas_object_show(Evas_Object *eo_obj)
Makes the given Evas object visible.
Definition: evas_object_main.c:1814
evas_object_del
EVAS_API void evas_object_del(Evas_Object *obj)
Marks the given Evas object for deletion (when Evas will free its memory).
Definition: evas_object_main.c:928
evas_object_color_set
EVAS_API void evas_object_color_set(Evas_Object *obj, int r, int g, int b, int a)
Sets the general/main color of the given Evas object to the given one.
Definition: evas_object_main.c:2024
evas_object_event_callback_add
EVAS_API void evas_object_event_callback_add(Evas_Object *eo_obj, Evas_Callback_Type type, Evas_Object_Event_Cb func, const void *data)
Add (register) a callback function to a given Evas object event.
Definition: evas_callbacks.c:478
evas_object_move
EVAS_API void evas_object_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
Move the given Evas object to the given location inside its canvas' viewport.
Definition: evas_object_main.c:1171
Evas_Object
Efl_Canvas_Object Evas_Object
An Evas Object handle.
Definition: Evas_Common.h:185
evas_object_repeat_events_set
EVAS_API void evas_object_repeat_events_set(Efl_Canvas_Object *obj, Eina_Bool repeat)
Set whether an Evas object is to repeat events.
Definition: efl_canvas_object_eo.legacy.c:27
evas_object_focus_set
EVAS_API void evas_object_focus_set(Efl_Canvas_Object *obj, Eina_Bool focus)
Indicates that this object is the keyboard event receiver on its canvas.
Definition: efl_canvas_object_eo.legacy.c:39
evas_object_resize
EVAS_API void evas_object_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Changes the size of the given Evas object.
Definition: evas_object_main.c:1236
evas_object_image_border_set
EVAS_API void evas_object_image_border_set(Evas_Object *obj, int l, int r, int t, int b)
Dimensions of this image's border, a region that does not scale with the center area.
Definition: evas_image_legacy.c:117
evas_object_image_border_center_fill_set
EVAS_API void evas_object_image_border_center_fill_set(Evas_Object *obj, Evas_Border_Fill_Mode fill)
Specifies how the center part of the object (not the borders) should be drawn when EFL is rendering i...
Definition: evas_image_legacy.c:145
evas_object_image_file_set
EVAS_API void evas_object_image_file_set(Evas_Object *obj, const char *file, const char *key)
Set the source file from where an image object must fetch the real image data (it may be an Eet file,...
Definition: evas_image_legacy.c:194
evas_object_image_filled_add
EVAS_API Evas_Object * evas_object_image_filled_add(Evas *eo_e)
Creates a new image object that automatically scales its bound image to the object's area,...
Definition: evas_image_legacy.c:35
EVAS_BORDER_FILL_NONE
@ EVAS_BORDER_FILL_NONE
Image's center region is not to be rendered.
Definition: Evas_Legacy.h:5721
evas_object_rectangle_add
EVAS_API Evas_Object * evas_object_rectangle_add(Evas *e)
Adds a rectangle to the given evas.
Definition: evas_object_rectangle.c:78
_Edje_Message_Int_Set
Structure passed as value on EDJE_MESSAGE_INT_SET messages.
Definition: Edje_Legacy.h:527
_Edje_Message_Int_Set::val
int val[1]
The message's array of integers.
Definition: Edje_Legacy.h:529
_Edje_Message_Int_Set::count
int count
The size of the message's array (may be greater than 1)
Definition: Edje_Legacy.h:528
_Edje_Message_String
Structure passed as value on EDJE_MESSAGE_STRING messages.
Definition: Edje_Legacy.h:506
_Evas_Event_Key_Down
Key press event.
Definition: Evas_Legacy.h:314
_Evas_Event_Key_Down::key
const char * key
The logical key : (eg shift+1 == exclamation)
Definition: Evas_Legacy.h:320