edje-perspective.c
#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 480
#define HEIGHT 320
static const char commands[] = \
"commands are:\n"
"\tDown - move part down\n"
"\tUp - move part up\n"
"\tLeft - move part left\n"
"\tRight - move part right\n"
"\tPrior - move part up-left\n"
"\tNext - move part down-right\n"
"\tInsert - increase focal\n"
"\tSuppr - decrease focal\n"
"\tEsc - exit\n"
"\th - print help\n";
struct _App {
Evas_Object *edje_obj;
Evas_Object *bg;
Edje_Perspective *ps;
Eina_Bool animating;
int x, y; // relative position of part in the screen
int focal;
};
static void
_on_destroy(Ecore_Evas *ee EINA_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)
{
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_obj, w, h);
}
static void
_part_move(struct _App *app, int dx, int dy)
{
char emission[64];
if (app->animating)
return;
app->x += dx;
app->y += dy;
if (app->x > 1)
app->x = 1;
if (app->x < 0)
app->x = 0;
if (app->y > 1)
app->y = 1;
if (app->y < 0)
app->y = 0;
snprintf(emission, sizeof(emission), "move,%d,%d", app->x, app->y);
edje_object_signal_emit(app->edje_obj, emission, "");
app->animating = EINA_TRUE;
}
static void
_on_bg_key_down(void *data, Evas *e EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *event_info)
{
struct _App *app = data;
Evas_Event_Key_Down *ev = event_info;
if (!strcmp(ev->key, "h"))
{
printf(commands);
return;
}
// just moving the part and text
else if (!strcmp(ev->key, "Down"))
{
_part_move(app, 0, 1);
}
else if (!strcmp(ev->key, "Up"))
{
_part_move(app, 0, -1);
}
else if (!strcmp(ev->key, "Left"))
{
_part_move(app, -1, 0);
}
else if (!strcmp(ev->key, "Right"))
{
_part_move(app, 1, 0);
}
else if (!strcmp(ev->key, "Prior"))
{
_part_move(app, -1, -1);
}
else if (!strcmp(ev->key, "Next"))
{
_part_move(app, 1, 1);
}
// adjusting the perspective focal point distance
else if (!strcmp(ev->key, "KP_Add"))
{
app->focal += 5;
edje_perspective_set(app->ps, 240, 160, 0, app->focal);
edje_object_calc_force(app->edje_obj);
}
else if (!strcmp(ev->key, "KP_Subtract"))
{
app->focal -= 5;
if (app->focal < 5)
app->focal = 5;
edje_perspective_set(app->ps, 240, 160, 0, app->focal);
edje_object_calc_force(app->edje_obj);
}
// exiting
else if (!strcmp(ev->key, "Escape"))
ecore_main_loop_quit();
else
{
printf("unhandled key: %s\n", ev->key);
printf(commands);
}
}
static void
_animation_end_cb(void *data, Evas_Object *o EINA_UNUSED, const char *emission EINA_UNUSED, const char *source EINA_UNUSED)
{
struct _App *app = data;
app->animating = EINA_FALSE;
}
int
main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
{
const char *edje_file = PACKAGE_DATA_DIR"/perspective.edj";
struct _App app;
Ecore_Evas *ee;
Evas *evas;
if (!ecore_evas_init())
return EXIT_FAILURE;
if (!edje_init())
goto shutdown_ecore_evas;
edje_frametime_set(1.0 / 60.0);
/* this will give you a window with an Evas canvas under the first
* engine available */
app.animating = EINA_FALSE;
app.x = 0;
app.y = 0;
app.focal = 50;
ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
if (!ee) goto shutdown_edje;
ecore_evas_callback_destroy_set(ee, _on_destroy);
ecore_evas_callback_resize_set(ee, _on_canvas_resize);
ecore_evas_title_set(ee, "Edje Perspective Example");
ecore_evas_data_set(ee, "app", &app);
evas = ecore_evas_get(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, _on_bg_key_down, &app);
app.edje_obj = edje_object_add(evas);
edje_object_file_set(app.edje_obj, edje_file, "example/group");
evas_object_move(app.edje_obj, 0, 0);
evas_object_resize(app.edje_obj, WIDTH, HEIGHT);
evas_object_show(app.edje_obj);
edje_object_signal_callback_add(app.edje_obj, "animation,end", "", _animation_end_cb, &app);
app.ps = edje_perspective_new(evas);
edje_perspective_set(app.ps, 240, 160, 0, app.focal);
edje_perspective_global_set(app.ps, EINA_TRUE);
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_callback_destroy_set
EAPI void ecore_evas_callback_destroy_set(Ecore_Evas *ee, Ecore_Evas_Event_Cb func)
Sets a callback for Ecore_Evas destroy events.
Definition: ecore_evas.c:1185
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_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_geometry_get
EAPI void ecore_evas_geometry_get(const Ecore_Evas *ee, int *x, int *y, int *w, int *h)
Gets the geometry of an Ecore_Evas.
Definition: ecore_evas.c:1362
ecore_evas_data_set
EAPI void ecore_evas_data_set(Ecore_Evas *ee, const char *key, const void *data)
Stores user data in an Ecore_Evas structure.
Definition: ecore_evas.c:1103
ecore_evas_callback_resize_set
EAPI void ecore_evas_callback_resize_set(Ecore_Evas *ee, Ecore_Evas_Event_Cb func)
Sets a callback for Ecore_Evas resize events.
Definition: ecore_evas.c:1140
ecore_evas_shutdown
EAPI int ecore_evas_shutdown(void)
Shuts down the Ecore_Evas system.
Definition: ecore_evas.c:666
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_free
EAPI void ecore_evas_free(Ecore_Evas *ee)
Frees an Ecore_Evas.
Definition: ecore_evas.c:1083
ecore_evas_data_get
EAPI void * ecore_evas_data_get(const Ecore_Evas *ee, const char *key)
Retrieves user data associated with an Ecore_Evas.
Definition: ecore_evas.c:1092
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_frametime_set
void edje_frametime_set(double t)
Sets edje transitions' frame time.
Definition: edje_program.c:216
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_add
Evas_Object * edje_object_add(Evas *evas)
Instantiates a new Edje object.
Definition: edje_smart.c:22
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_calc_force
void edje_object_calc_force(Edje_Object *obj)
Forces a Size/Geometry calculation.
Definition: edje_legacy.c:1110
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
edje_perspective_new
Edje_Perspective * edje_perspective_new(Evas *e)
Creates a new perspective in the given canvas.
Definition: edje_util.c:5275
edje_perspective_global_set
void edje_perspective_global_set(Edje_Perspective *ps, Eina_Bool global)
Makes this perspective object be global for its canvas.
Definition: edje_util.c:5343
edje_perspective_set
void edje_perspective_set(Edje_Perspective *ps, Evas_Coord px, Evas_Coord py, Evas_Coord z0, Evas_Coord foc)
Sets up the transform for this perspective object.
Definition: edje_util.c:5302
Edje_Perspective
struct _Edje_Perspective Edje_Perspective
Perspective info for maps inside edje objects.
Definition: Edje_Common.h:140
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
EINA_FALSE
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition: eina_types.h:533
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_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_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_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
_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