351 lines
9.5 KiB
C
351 lines
9.5 KiB
C
/**
|
|
* Simple Evas example illustrating some image objects functions
|
|
*
|
|
* 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-images evas-images.c `pkg-config --libs --cflags evas ecore ecore-evas`
|
|
* @endverbatim
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#else
|
|
#define PACKAGE_EXAMPLES_DIR "."
|
|
#endif
|
|
|
|
#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 *border_img_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/red.png";
|
|
static const char *valid_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/enlightenment.png";
|
|
static const char *bogus_path = "/tmp/non-existent-220986.png";
|
|
static const char *commands = \
|
|
"commands are:\n"
|
|
"\tx - change image's x fill coordinate\n"
|
|
"\ty - change image's y fill coordinate\n"
|
|
"\tw - change image's w fill size\n"
|
|
"\te - change image's h fill size\n"
|
|
"\tf - toggle image filled property (overrides fill)\n"
|
|
"\ta - toggle image's alpha channel usage\n"
|
|
"\tm - toggle border's smooth scaling\n"
|
|
"\tt - change border's thickness\n"
|
|
"\tb - change border's center region aspect\n"
|
|
"\tc - change border's scaling factor\n"
|
|
"\ts - print image's fill property status\n"
|
|
"\th - print help\n";
|
|
|
|
struct test_data
|
|
{
|
|
Ecore_Evas *ee;
|
|
Evas *evas;
|
|
Evas_Object *img1, *img2, *bg, *border;
|
|
};
|
|
|
|
static struct test_data d = {0};
|
|
|
|
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
|
|
_canvas_resize_cb(Ecore_Evas *ee)
|
|
{
|
|
int w, h;
|
|
|
|
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
|
|
evas_object_resize(d.bg, w, h);
|
|
}
|
|
|
|
static const char *
|
|
_border_fill_mode_to_str(Evas_Border_Fill_Mode mode)
|
|
{
|
|
switch (mode)
|
|
{
|
|
case EVAS_BORDER_FILL_NONE:
|
|
return "none";
|
|
|
|
case EVAS_BORDER_FILL_DEFAULT:
|
|
return "default";
|
|
|
|
case EVAS_BORDER_FILL_SOLID:
|
|
return "solid";
|
|
|
|
default:
|
|
return "invalid";
|
|
}
|
|
}
|
|
|
|
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 */
|
|
{
|
|
puts(commands);
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "m") == 0) /* toggle border image's smooth scaling */
|
|
{
|
|
Eina_Bool smooth_scale = evas_object_image_smooth_scale_get(d.border);
|
|
|
|
evas_object_image_smooth_scale_set(d.border, !smooth_scale);
|
|
|
|
fprintf(stdout, "Image's border is now %s smooth scaling\n",
|
|
smooth_scale ? "without" : "with");
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "t") == 0) /* change border's thickness */
|
|
{
|
|
int l, r, t, b;
|
|
|
|
evas_object_image_border_get(d.border, &l, &r, &t, &b);
|
|
|
|
l = (l + 3) % 9;
|
|
r = (r + 3) % 9;
|
|
t = (t + 3) % 9;
|
|
b = (b + 3) % 9;
|
|
|
|
evas_object_image_border_set(d.border, l, r, t, b);
|
|
|
|
fprintf(stdout, "Image's border thickness is now %d\n", l);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "c") == 0) /* change border's scaling factor */
|
|
{
|
|
double scale = evas_object_image_border_scale_get(d.border);
|
|
|
|
scale *= 2;
|
|
if (scale > 4.0) scale = 1.0;
|
|
|
|
evas_object_image_border_scale_set(d.border, scale);
|
|
|
|
fprintf(stdout, "Image's border scaling factor is now %f\n", scale);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "b") == 0) /* change border's center
|
|
* region's aspect */
|
|
{
|
|
Eina_Bool fill = \
|
|
evas_object_image_border_center_fill_get(d.border);
|
|
|
|
fill = (fill + 1) % 3;
|
|
|
|
evas_object_image_border_center_fill_set(d.border, fill);
|
|
|
|
fprintf(stdout, "Image's border center region aspect is now \"%s\"\n",
|
|
_border_fill_mode_to_str(fill));
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "a") == 0) /* toggle alpha channel usage */
|
|
{
|
|
Eina_Bool alpha = evas_object_image_alpha_get(d.img1);
|
|
|
|
evas_object_image_alpha_set(d.img1, !alpha);
|
|
|
|
fprintf(stdout, "Image's alpha channel is now %s\n",
|
|
alpha ? "off" : "on");
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "f") == 0) /* toggle filled property */
|
|
{
|
|
Eina_Bool filled = evas_object_image_filled_get(d.img1);
|
|
|
|
evas_object_image_filled_set(d.img1, !filled);
|
|
|
|
fprintf(stdout, "Image's x filled property is now %s\n",
|
|
filled ? "off" : "on");
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "x") == 0) /* change x fill coordinate */
|
|
{
|
|
Evas_Coord x, y, w, h;
|
|
|
|
evas_object_image_fill_get(d.img1, &x, &y, &w, &h);
|
|
x = (x + 20) % (WIDTH / 2);
|
|
evas_object_image_fill_set(d.img1, x, y, w, h);
|
|
|
|
fprintf(stdout, "Image's x fill coordinate changed to %d\n", x);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "y") == 0) /* change y fill coordinate */
|
|
{
|
|
Evas_Coord x, y, w, h;
|
|
|
|
evas_object_image_fill_get(d.img1, &x, &y, &w, &h);
|
|
y = (y + 20) % (HEIGHT / 2);
|
|
evas_object_image_fill_set(d.img1, x, y, w, h);
|
|
|
|
fprintf(stdout, "Image's y fill coordinate changed to %d\n", y);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "w") == 0) /* change w fill size */
|
|
{
|
|
Evas_Coord x, y, w, h;
|
|
|
|
evas_object_image_fill_get(d.img1, &x, &y, &w, &h);
|
|
if (w == (WIDTH / 4)) w = (WIDTH / 2);
|
|
else if (w == WIDTH / 2) w = WIDTH;
|
|
else w = (WIDTH / 4);
|
|
evas_object_image_fill_set(d.img1, x, y, w, h);
|
|
|
|
fprintf(stdout, "Image's w fill size changed to %d\n", w);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "e") == 0) /* change h fill size */
|
|
{
|
|
Evas_Coord x, y, w, h;
|
|
|
|
evas_object_image_fill_get(d.img1, &x, &y, &w, &h);
|
|
if (h == (HEIGHT / 4)) h = (HEIGHT / 2);
|
|
else if (h == HEIGHT / 2) h = HEIGHT;
|
|
else h = (HEIGHT / 4);
|
|
evas_object_image_fill_set(d.img1, x, y, w, h);
|
|
|
|
fprintf(stdout, "Image's h fill size changed to %d\n", h);
|
|
|
|
return;
|
|
}
|
|
|
|
if (strcmp(ev->key, "s") == 0) /* status */
|
|
{
|
|
Evas_Coord x, y, w, h;
|
|
|
|
evas_object_image_fill_get(d.img1, &x, &y, &w, &h);
|
|
|
|
fprintf(stdout, "Image has fill properties set to: %d, %d, %d, %d\n",
|
|
x, y, w, h);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
int 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_destroy_set(d.ee, _on_destroy);
|
|
ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
|
|
ecore_evas_show(d.ee);
|
|
|
|
/* the canvas pointer, de facto */
|
|
d.evas = ecore_evas_get(d.ee);
|
|
|
|
d.bg = evas_object_rectangle_add(d.evas);
|
|
evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */
|
|
evas_object_move(d.bg, 0, 0); /* at canvas' origin */
|
|
evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */
|
|
evas_object_show(d.bg);
|
|
|
|
d.img1 = evas_object_image_add(d.evas);
|
|
evas_object_image_file_set(d.img1, valid_path, NULL);
|
|
err = evas_object_image_load_error_get(d.img1);
|
|
if (err != EVAS_LOAD_ERROR_NONE)
|
|
{
|
|
fprintf(stderr, "could not load image '%s'. error string is \"%s\"\n",
|
|
valid_path, evas_load_error_str(err));
|
|
}
|
|
else
|
|
{
|
|
fprintf(stdout,
|
|
"loaded image '%s' with succes! error string is \"%s\"\n",
|
|
valid_path, evas_load_error_str(err));
|
|
|
|
evas_object_move(d.img1, 3, 3);
|
|
evas_object_image_fill_set(d.img1, 0, 0, WIDTH / 2, HEIGHT / 2);
|
|
evas_object_resize(d.img1, WIDTH / 2, HEIGHT / 2);
|
|
evas_object_show(d.img1);
|
|
|
|
evas_object_focus_set(d.bg, EINA_TRUE);
|
|
evas_object_event_callback_add(
|
|
d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
|
|
}
|
|
|
|
/* this is a border around the image above, here just to emphasize
|
|
* its geometry */
|
|
d.border = evas_object_image_filled_add(d.evas);
|
|
evas_object_image_file_set(d.border, border_img_path, NULL);
|
|
evas_object_image_border_set(d.border, 3, 3, 3, 3);
|
|
evas_object_image_border_center_fill_set(d.border, EVAS_BORDER_FILL_NONE);
|
|
|
|
evas_object_move(d.border, 0, 0);
|
|
evas_object_resize(d.border, (WIDTH / 2) + 6, (HEIGHT / 2) + 6);
|
|
evas_object_show(d.border);
|
|
|
|
/* image loading will fail for this one -- unless one cheats and
|
|
* puts a valid image on that path */
|
|
d.img2 = evas_object_image_add(d.evas);
|
|
evas_object_image_file_set(d.img2, bogus_path, NULL);
|
|
err = evas_object_image_load_error_get(d.img2);
|
|
if (err != EVAS_LOAD_ERROR_NONE)
|
|
{
|
|
fprintf(stderr, "could not load image '%s': error string is \"%s\"\n",
|
|
bogus_path, evas_load_error_str(err));
|
|
}
|
|
else
|
|
{
|
|
evas_object_move(d.img2, WIDTH / 2, HEIGHT / 2);
|
|
evas_object_image_fill_set(d.img2, 0, 0, WIDTH / 2, HEIGHT / 2);
|
|
evas_object_resize(d.img2, WIDTH / 2, HEIGHT / 2);
|
|
evas_object_show(d.img2);
|
|
}
|
|
|
|
puts(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");
|
|
ecore_evas_shutdown();
|
|
return -1;
|
|
}
|