Swallow example 2

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Swallow example 2

This example will show you how to load an image using evas and fill a swallow with it.

It's basically almost like the last example, but with a minor change.

This variables are used to store the name of the image that is going to be used, the path to it and a variable that will store the error cause if something goes wrong.

Here it is:

Then we load the image with this command:

To check if we had some problem we use:

Now we are going to swallow it and check if worked. If you notice we are using "part_one" as argument. We do this because we must explicit what part of our .edc file we want to swallow:

The example's window should look like this picture:

The complete .edc file:

collections {
group {
name: "example_group";
max: 500 500;
min: 50 50;
parts {
part {
name: "part_one";
type: SWALLOW;
description {
min: 50 50;
state: "default" 0.0;
rel1.relative: 0.0 0.0;
rel2.relative: 1.0 1.0;
}
}
}
}
}

And the source code:

#ifdef HAVE_CONFIG_H
# include "config.h"
#else
# define EINA_UNUSED
#endif
#ifndef PACKAGE_DATA_DIR
#define PACKAGE_DATA_DIR "."
#endif
#include <Ecore.h>
#include <Ecore_Evas.h>
#include <Edje.h>
#define WIDTH (300)
#define HEIGHT (300)
static void
_on_delete(Ecore_Evas *ee EINA_UNUSED)
{
ecore_main_loop_quit();
}
int
main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
{
const char *edje_file = PACKAGE_DATA_DIR"/swallow.edj";
const char *img_file = PACKAGE_DATA_DIR"/bubble.png";
Ecore_Evas *ee;
Evas *evas;
Evas_Object *bg;
Evas_Object *img;
Evas_Object *obj;
Evas_Object *edje_obj;
Evas_Load_Error err;
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 Swallow 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);
ecore_evas_data_set(ee, "background", bg);
ecore_evas_object_associate(ee,bg, ECORE_EVAS_OBJECT_ASSOCIATE_BASE);
edje_obj = edje_object_add(evas);
edje_object_file_set(edje_obj, edje_file, "example_group");
evas_object_move(edje_obj, 20, 20);
evas_object_resize(edje_obj, WIDTH - 40, HEIGHT - 40);
evas_object_show(edje_obj);
img = evas_object_image_filled_add(evas);
evas_object_image_file_set(img, img_file, NULL);
err = evas_object_image_load_error_get(img);
if (err != EVAS_LOAD_ERROR_NONE)
{
fprintf(stderr, "could not load image '%s'. error string is \"%s\"\n",
img_file, evas_load_error_str(err));
goto shutdown_edje;
}
edje_object_part_swallow(edje_obj, "part_one", img);
obj = edje_object_part_swallow_get(edje_obj, "part_one");
if(obj == img)
printf("Swallowing worked!\n");
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;
}

To compile use this command:

    * gcc -o edje-swallow2 edje-swallow2.c -DPACKAGE_BIN_DIR=\"/Where/enlightenment/is/installed/bin\"
    * -DPACKAGE_LIB_DIR=\"/Where/enlightenment/is/installed/lib\"
    * -DPACKAGE_DATA_DIR=\"/Where/enlightenment/is/installed/share\"
    * `pkg-config --cflags --libs evas ecore ecore-evas edje`
    *
    * edje_cc swallow.edc
    *