263 lines
7.5 KiB
C
263 lines
7.5 KiB
C
/**
|
|
* Porting evas-object-manipulation.c example
|
|
* to use Eo-styled Evas API.
|
|
*
|
|
* Simple Evas example illustrating basic objects manipulation.
|
|
*
|
|
* You'll need at least one engine built for it (excluding the buffer
|
|
* one) and the png image loader also built. See stdout/stderr for
|
|
* output.
|
|
*
|
|
* @verbatim
|
|
* gcc -o evas-object-manipulation-eo evas-object-manipulation-eo.c `pkg-config --libs --cflags ecore evas ecore-evas eo`
|
|
* @endverbatim
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#else
|
|
#define PACKAGE_EXAMPLES_DIR "."
|
|
#define EFL_EO_API_SUPPORT
|
|
#define EFL_BETA_API_SUPPORT
|
|
#endif
|
|
|
|
#include <Efl.h>
|
|
#include <Ecore.h>
|
|
#include <Ecore_Evas.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include "evas-common.h"
|
|
|
|
#define WIDTH (320)
|
|
#define HEIGHT (240)
|
|
|
|
static const char *img_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/enlightenment.png";
|
|
static const char *border_img_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/red.png";
|
|
|
|
static const char *commands = \
|
|
"commands are:\n"
|
|
"\to - change clipper's opacity\n"
|
|
"\tr - toggle clipper's color between red and white\n"
|
|
"\tc - toggle clipper's clipping function\n"
|
|
"\tv - toggle clipper's visibility"
|
|
"\th - print help\n";
|
|
|
|
struct test_data
|
|
{
|
|
Ecore_Evas *ee;
|
|
Evas *canvas;
|
|
Eo *img, *bg, *clipper, *clipper_border;
|
|
};
|
|
|
|
static struct test_data d = {0};
|
|
|
|
/* 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;
|
|
|
|
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
|
|
eo_do(d.bg, evas_obj_size_set(w, h));
|
|
}
|
|
|
|
static void
|
|
_on_keydown(void *data EINA_UNUSED,
|
|
Evas *evas EINA_UNUSED,
|
|
Evas_Object *o EINA_UNUSED,
|
|
void *einfo)
|
|
{
|
|
Evas_Event_Key_Down *ev = einfo;
|
|
|
|
if (strcmp(ev->key, "h") == 0) /* print help */
|
|
{
|
|
fprintf(stdout, "%s", commands);
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "o") == 0) /* change clipper's opacity */
|
|
{
|
|
int alpha, r, g, b;
|
|
|
|
eo_do(d.clipper, evas_obj_color_get(&r, &g, &b, &alpha));
|
|
evas_color_argb_unpremul(alpha, &r, &g, &b);
|
|
|
|
alpha -= 20;
|
|
if (alpha < 0)
|
|
alpha = 255;
|
|
|
|
evas_color_argb_premul(alpha, &r, &g, &b);
|
|
eo_do(d.clipper, evas_obj_color_set(r, g, b, alpha));
|
|
|
|
fprintf(stdout, "Changing clipper's opacity: %d%%\n",
|
|
(int)((alpha / 255.0) * 100));
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "r") == 0) /* toggle clipper's color
|
|
* between red and white */
|
|
{
|
|
int alpha, r, g, b;
|
|
|
|
fprintf(stdout, "Changing clipper's color to");
|
|
|
|
eo_do(d.clipper, evas_obj_color_get(&r, &g, &b, &alpha));
|
|
evas_color_argb_unpremul(alpha, &r, &g, &b);
|
|
|
|
if (g > 0)
|
|
{
|
|
fprintf(stdout, "red\n");
|
|
g = b = 0;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stdout, "white\n");
|
|
g = b = 255;
|
|
}
|
|
|
|
evas_color_argb_premul(alpha, &r, &g, &b);
|
|
eo_do(d.clipper, evas_obj_color_set(r, g, b, alpha));
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "c") == 0) /* toggle clipper's clipping function */
|
|
{
|
|
fprintf(stdout, "Toggling clipping ");
|
|
|
|
Evas_Object *clip = NULL;
|
|
eo_do(d.img, clip = evas_obj_clip_get());
|
|
if (clip == d.clipper)
|
|
{
|
|
eo_do(d.img, evas_obj_clip_unset());
|
|
fprintf(stdout, "off\n");
|
|
}
|
|
else
|
|
{
|
|
eo_do(d.img, evas_obj_clip_set(d.clipper));
|
|
fprintf(stdout, "on\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "v") == 0) /* toggle clipper's visibility */
|
|
{
|
|
Eina_Bool visibility;
|
|
/* Don't use "get"-"set" expressions in one eo_do call,
|
|
* if you pass parameter to "set" by value. */
|
|
eo_do(d.clipper, visibility = evas_obj_visibility_get());
|
|
eo_do(d.clipper, evas_obj_visibility_set(!visibility));
|
|
fprintf(stdout, "Clipper is now %s\n", visibility ? "hidden" : "visible");
|
|
return;
|
|
}
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
Evas_Load_Error err;
|
|
|
|
if (!ecore_evas_init())
|
|
return EXIT_FAILURE;
|
|
|
|
/* this will give you a window with an Evas canvas under the first
|
|
* engine available */
|
|
d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
|
|
if (!d.ee)
|
|
goto error;
|
|
|
|
ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
|
|
ecore_evas_show(d.ee);
|
|
|
|
/* the canvas pointer, de facto */
|
|
d.canvas = ecore_evas_get(d.ee);
|
|
|
|
/* Creating object with Eo.
|
|
* Object must be deleted explixitly at the end of program.*/
|
|
d.bg = eo_add(EVAS_RECTANGLE_CLASS, d.canvas);
|
|
|
|
/* Eo-styled way to perform actions on an object*/
|
|
eo_do(d.bg, evas_obj_name_set("background rectangle"),
|
|
evas_obj_color_set(255, 255, 255, 255), /* white bg */
|
|
evas_obj_position_set(0, 0), /* at canvas' origin */
|
|
evas_obj_size_set(WIDTH, HEIGHT), /* covers full canvas */
|
|
evas_obj_visibility_set(EINA_TRUE),
|
|
evas_obj_focus_set(EINA_TRUE));
|
|
|
|
evas_object_event_callback_add(
|
|
d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
|
|
|
|
d.img = eo_add(EVAS_IMAGE_CLASS, d.canvas);
|
|
|
|
/* As soon as 'canvas' object is a parent for 'image' object,
|
|
* 'canvas' keeps reference to 'image'.
|
|
* So it's possible to decrement refcount, and 'image' object
|
|
* will be deleted automatically by parent.*/
|
|
|
|
eo_do(d.img, evas_obj_image_filled_set(EINA_TRUE),
|
|
efl_file_set(img_path, NULL),
|
|
err = evas_obj_image_load_error_get());
|
|
|
|
if (err != EVAS_LOAD_ERROR_NONE)
|
|
{
|
|
goto panic;
|
|
}
|
|
else
|
|
{
|
|
eo_do(d.img, evas_obj_position_set(0, 0),
|
|
evas_obj_size_set(WIDTH, HEIGHT),
|
|
evas_obj_visibility_set(EINA_TRUE));
|
|
|
|
const char *type = NULL;
|
|
eo_do(d.img, type = evas_obj_type_get());
|
|
fprintf(stdout, "Image object added, type is: %s\n", type);
|
|
}
|
|
|
|
/* border on the image's clipper, here just to emphasize its position */
|
|
d.clipper_border = eo_add(EVAS_IMAGE_CLASS, d.canvas);
|
|
eo_do(d.clipper_border, evas_obj_image_filled_set(EINA_TRUE),
|
|
efl_file_set(border_img_path, NULL),
|
|
err = evas_obj_image_load_error_get());
|
|
|
|
if (err != EVAS_LOAD_ERROR_NONE)
|
|
{
|
|
goto panic;
|
|
}
|
|
else
|
|
{
|
|
eo_do(d.clipper_border,
|
|
evas_obj_image_border_set(3, 3, 3, 3),
|
|
evas_obj_image_border_center_fill_set(EVAS_BORDER_FILL_NONE),
|
|
evas_obj_position_set((WIDTH / 4) -3, (HEIGHT / 4) - 3),
|
|
evas_obj_size_set((WIDTH / 2) + 6, (HEIGHT / 2) + 6),
|
|
evas_obj_visibility_set(EINA_TRUE));
|
|
}
|
|
/* solid white clipper (note that it's the default color for a
|
|
* rectangle) - it won't change clippees' colors, then (multiplying
|
|
* by 255) */
|
|
d.clipper = eo_add(EVAS_RECTANGLE_CLASS, d.canvas);
|
|
|
|
eo_do(d.clipper,
|
|
evas_obj_position_set( WIDTH / 4, HEIGHT / 4),
|
|
evas_obj_size_set(WIDTH / 2, HEIGHT / 2),
|
|
evas_obj_visibility_set(EINA_TRUE));
|
|
|
|
eo_do(d.img, evas_obj_clip_set(d.clipper));
|
|
|
|
fprintf(stdout, "%s", commands);
|
|
|
|
ecore_main_loop_begin();
|
|
|
|
ecore_evas_free(d.ee);
|
|
ecore_evas_shutdown();
|
|
return 0;
|
|
|
|
error:
|
|
fprintf(stderr, "you got to have at least one evas engine built and linked"
|
|
" up to ecore-evas for this example to run properly.\n");
|
|
panic:
|
|
ecore_evas_free(d.ee);
|
|
ecore_evas_shutdown();
|
|
return -1;
|
|
}
|