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Edje Text example

This example shows how to manipulate TEXT and TEXTBLOCK parts from code.

The very first we are going to do is register a callback to react to changes in the text of our parts:

edje_object_text_change_cb_set(edje_obj, _on_text_change, NULL);
_on_text_change(void *data EINA_UNUSED, Evas_Object *obj, const char *part)

Note
  Since edje_obj represent a group we'll be notified whenever any part's text in that group changes.

We now set the text for two our two parts:

edje_object_part_text_set(edje_obj, "part_one", "one");
edje_object_part_text_set(edje_obj, "part_two", "<b>two");

Note
  Since the "part_two" part is a TEXTBLOCK we can use formatting such as <b>

And we now move on to selection issues, first thing we do is make sure the user can select text:

edje_object_part_text_select_allow_set(edje_obj, "part_two", EINA_TRUE);

We then select the entire text, and print the selected text:

printf("selection: %s\n", edje_object_part_text_selection_get(edje_obj, "part_two"));

We now unselect the entire text(set selection to none), and print the selected text:

edje_object_part_text_select_none(edje_obj, "part_two");
printf("selection: %s\n", edje_object_part_text_selection_get(edje_obj, "part_two"));

Our example will look like this:

The full source code follows:

#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();
}
static void
_on_text_change(void *data EINA_UNUSED, Evas_Object *obj, const char *part)
{
printf("text: %s\n", edje_object_part_text_unescaped_get(obj, part));
}
int
main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
{
const char *edje_file = PACKAGE_DATA_DIR"/text.edj";
Ecore_Evas *ee;
Evas *evas;
Evas_Object *bg;
Evas_Object *edje_obj;
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 text 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_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);
edje_object_text_change_cb_set(edje_obj, _on_text_change, NULL);
edje_object_part_text_set(edje_obj, "part_one", "one");
edje_object_part_text_set(edje_obj, "part_two", "<b>two");
edje_object_part_text_select_allow_set(edje_obj, "part_two", EINA_TRUE);
edje_object_part_text_select_all(edje_obj, "part_two");
printf("selection: %s\n", edje_object_part_text_selection_get(edje_obj, "part_two"));
edje_object_part_text_select_none(edje_obj, "part_two");
printf("selection: %s\n", edje_object_part_text_selection_get(edje_obj, "part_two"));
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;
}

The theme used in this example is:

collections {
group {
name: "sel_group";
parts {
part {
name: "rect";
type: RECT;
description {
state: "default" 0.0;
color: 0 255 0 255; /* green */
rel1.relative: 0.0 0.0;
rel2.relative: 1.0 1.0;
}
}
}
}
group {
name: "example_group";
max: 500 500;
min: 50 50;
styles {
style {
name: "textblock_style";
base: "font=Sans font_size=22 color=#600 wrap=word";
tag: "br" "\n";
tag: "hilight" "+ font_weight=Bold";
tag: "b" "+ font_weight=Bold";
tag: "tab" "\t";
}
}
parts {
part {
name: "part_one";
type: TEXT;
description {
min: 50 50;
state: "default" 0.0;
color: 0 0 255 255; /* blue */
rel1.relative: 0.0 0.0;
rel2.relative: 1.0 0.5;
text {
font: "arial";
size: 22;
min: 1 1;
}
}
}
part {
name: "part_two";
type: TEXTBLOCK;
select_mode: EXPLICIT;
source: "sel_group";
entry_mode: PLAIN;
description {
min: 50 50;
state: "default" 0.0;
rel1.relative: 0.0 0.5;
rel2.relative: 1.0 1.0;
text {
style: "textblock_style";
min: 1 1;
}
}
}
}
}
}

To compile use this command:

    * gcc -o edje-text edje-text.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 text.edc
    *