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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 PACKAGE_EXAMPLES_DIR "."
#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 *PARTNAME = "example/knob";
static const char *edje_file_path = PACKAGE_EXAMPLES_DIR "/drag.edj";
struct _App {
Ecore_Evas *ee;
Evas_Object *edje;
Evas_Object *bg;
};
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
_canvas_resize_cb(Ecore_Evas *ee)
{
int w, h;
struct _App *app = ecore_evas_data_get(ee, "app");
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
evas_object_resize(app->bg, w, h);
evas_object_resize(app->edje, w, h);
}
static void
_bg_key_down(void *data, Evas *e, Evas_Object *o __UNUSED__, void *event_info)
{
struct _App *app = data;
Evas_Event_Key_Down *ev = event_info;
Evas_Object *rect;
Eina_Bool r;
if (!strcmp(ev->keyname, "Down"))
{
edje_object_part_drag_step(app->edje, PARTNAME, 0, 1.0);
}
else if (!strcmp(ev->keyname, "Up"))
{
edje_object_part_drag_step(app->edje, PARTNAME, 0, -1.0);
}
else if (!strcmp(ev->keyname, "m"))
{
edje_object_part_drag_value_set(app->edje, PARTNAME, 0.0, 0.5);
}
else if (!strcmp(ev->keyname, "Prior"))
{
edje_object_part_drag_page(app->edje, PARTNAME, 0.0, -1.0);
}
else if (!strcmp(ev->keyname, "Next"))
{
edje_object_part_drag_page(app->edje, PARTNAME, 0.0, 1.0);
}
else if (!strcmp(ev->keyname, "Escape"))
ecore_main_loop_quit();
else
printf("unhandled key: %s\n", ev->keyname);
}
static void
_knob_moved_cb(void *data, Evas_Object *o, const char *emission, const char *source)
{
double val;
edje_object_part_drag_value_get(o, PARTNAME, NULL, &val);
printf("value changed to: %0.3f\n", val);
}
int
main(void)
{
Evas *evas;
struct _App app;
int i;
ecore_evas_init();
edje_init();
/* this will give you a window with an Evas canvas under the first
* engine available */
app.ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
ecore_evas_callback_destroy_set(app.ee, _on_destroy);
ecore_evas_callback_resize_set(app.ee, _canvas_resize_cb);
ecore_evas_title_set(app.ee, "Edje Box Example");
ecore_evas_show(app.ee);
ecore_evas_data_set(app.ee, "app", &app);
evas = ecore_evas_get(app.ee);
app.bg = evas_object_rectangle_add(evas);
evas_object_color_set(app.bg, 255, 255, 255, 255);
evas_object_resize(app.bg, WIDTH, HEIGHT);
evas_object_focus_set(app.bg, EINA_TRUE);
evas_object_show(app.bg);
evas_object_event_callback_add(app.bg, EVAS_CALLBACK_KEY_DOWN, _bg_key_down, &app);
app.edje = edje_object_add(evas);
edje_object_file_set(app.edje, edje_file_path, "example/group");
evas_object_move(app.edje, 0, 0);
evas_object_resize(app.edje, WIDTH, HEIGHT);
evas_object_show(app.edje);
edje_object_part_drag_size_set(app.edje, PARTNAME, 1.0, 0.4);
if (!edje_object_part_drag_step_set(app.edje, PARTNAME, 0.0, 0.1))
printf("error when setting drag step size.\n");
if (!edje_object_part_drag_page_set(app.edje, PARTNAME, 0.0, 0.3))
printf("error when setting drag page step size.\n");
edje_object_signal_callback_add(app.edje, "drag", PARTNAME, _knob_moved_cb, &app);
ecore_main_loop_begin();
ecore_evas_free(app.ee);
ecore_evas_shutdown();
edje_shutdown();
return 0;
}
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