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/**
* Simple Edje example illustrating drag functions.
*
* You'll need at least one Evas engine built for it (excluding the
* buffer one). See stdout/stderr for output.
*
* @verbatim
* edje_cc drag.edc && gcc -o drag-box drag-box.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
* @endverbatim
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#else
# define __UNUSED__
#endif
#include <Ecore.h>
#include <Ecore_Evas.h>
#include <Edje.h>
#define WIDTH 300
#define HEIGHT 300
#define RECTW 30
#define RECTH 30
#define NRECTS 20
static const char commands[] = \
"commands are:\n"
"\tDdown - set drag step to 1\n"
"\tUp - set drag step to -1\n"
"\tm - set drag value to 0.5\n"
"\tPrior - set drag page to -1\n"
"\tNext - set drag page to -1\n"
"\tEsc - exit\n"
"\th - print help\n";
static const char *PARTNAME = "example/knob";
static void
_on_destroy(Ecore_Evas *ee __UNUSED__)
{
ecore_main_loop_quit();
}
/* here just to keep our example's window size and background image's
* size in synchrony */
static void
_on_canvas_resize(Ecore_Evas *ee)
{
Evas_Object *bg;
Evas_Object *edje_obj;
int w;
int h;
bg = ecore_evas_data_get(ee, "background");
edje_obj = ecore_evas_data_get(ee, "edje_obj");
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
evas_object_resize(bg, w, h);
evas_object_resize(edje_obj, w, h);
}
static void
_on_bg_key_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
{
Ecore_Evas *ee;
Evas_Event_Key_Down *ev;
Evas_Object *edje_obj;
ee = (Ecore_Evas *)data;
ev = (Evas_Event_Key_Down *)event_info;
edje_obj = ecore_evas_data_get(ee, "edje_obj");
if (!strcmp(ev->keyname, "h"))
{
fprintf(stdout, commands);
return;
}
else if (!strcmp(ev->keyname, "Down"))
{
edje_object_part_drag_step(edje_obj, PARTNAME, 0, 1.0);
}
else if (!strcmp(ev->keyname, "Up"))
{
edje_object_part_drag_step(edje_obj, PARTNAME, 0, -1.0);
}
else if (!strcmp(ev->keyname, "m"))
{
edje_object_part_drag_value_set(edje_obj, PARTNAME, 0.0, 0.5);
}
else if (!strcmp(ev->keyname, "Prior"))
{
edje_object_part_drag_page(edje_obj, PARTNAME, 0.0, -1.0);
}
else if (!strcmp(ev->keyname, "Next"))
{
edje_object_part_drag_page(edje_obj, PARTNAME, 0.0, 1.0);
}
else if (!strcmp(ev->keyname, "Escape"))
ecore_main_loop_quit();
else
{
printf("unhandled key: %s\n", ev->keyname);
fprintf(stdout, commands);
}
}
static void
_on_knob_moved(void *data __UNUSED__, Evas_Object *o, const char *emission __UNUSED__, const char *source __UNUSED__)
{
double val;
edje_object_part_drag_value_get(o, PARTNAME, NULL, &val);
printf("value changed to: %0.3f\n", val);
}
int
main(int argc __UNUSED__, char *argv[])
{
char edje_file_path[PATH_MAX];
const char *edje_file = "drag.edj";
Ecore_Evas *ee;
Evas *evas;
Evas_Object *bg;
Evas_Object *edje_obj;
Eina_Prefix *pfx;
if (!ecore_evas_init())
return EXIT_FAILURE;
if (!edje_init())
goto shutdown_ecore_evas;
pfx = eina_prefix_new(argv[0], main,
"EDJE_EXAMPLES",
"edje/examples",
edje_file,
PACKAGE_BIN_DIR,
PACKAGE_LIB_DIR,
PACKAGE_DATA_DIR,
PACKAGE_DATA_DIR);
if (!pfx)
goto shutdown_edje;
/* 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 free_prefix;
ecore_evas_callback_destroy_set(ee, _on_destroy);
ecore_evas_callback_resize_set(ee, _on_canvas_resize);
ecore_evas_title_set(ee, "Edje Box Example");
evas = ecore_evas_get(ee);
bg = evas_object_rectangle_add(evas);
evas_object_color_set(bg, 255, 255, 255, 255);
evas_object_resize(bg, WIDTH, HEIGHT);
evas_object_focus_set(bg, EINA_TRUE);
evas_object_show(bg);
ecore_evas_data_set(ee, "background", bg);
evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_bg_key_down, ee);
edje_obj = edje_object_add(evas);
snprintf(edje_file_path, sizeof(edje_file_path),
"%s/examples/%s", eina_prefix_data_get(pfx), edje_file);
edje_object_file_set(edje_obj, edje_file_path, "example/group");
evas_object_move(edje_obj, 0, 0);
evas_object_resize(edje_obj, WIDTH, HEIGHT);
evas_object_show(edje_obj);
ecore_evas_data_set(ee, "edje_obj", edje_obj);
edje_object_part_drag_size_set(edje_obj, PARTNAME, 1.0, 0.4);
if (!edje_object_part_drag_step_set(edje_obj, PARTNAME, 0.0, 0.1))
printf("error when setting drag step size.\n");
if (!edje_object_part_drag_page_set(edje_obj, PARTNAME, 0.0, 0.3))
printf("error when setting drag page step size.\n");
edje_object_signal_callback_add(edje_obj, "drag", PARTNAME, _on_knob_moved, NULL);
fprintf(stdout, commands);
ecore_evas_show(ee);
ecore_main_loop_begin();
eina_prefix_free(pfx);
ecore_evas_free(ee);
ecore_evas_shutdown();
edje_shutdown();
return EXIT_SUCCESS;
free_prefix:
eina_prefix_free(pfx);
shutdown_edje:
edje_shutdown();
shutdown_ecore_evas:
ecore_evas_shutdown();
return EXIT_FAILURE;
}
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