2 * Simple Evas example illustrating some image objects functions
4 * You'll need at least one engine built for it (excluding the buffer
5 * one) and the png image loader/saver also built. See stdout/stderr
9 * gcc -o evas-images2 evas-images2.c `pkg-config --libs --cflags evas ecore ecore-evas`
18 #define PACKAGE_EXAMPLES_DIR "."
24 #include <Ecore_Evas.h>
31 static const char *img_path = PACKAGE_EXAMPLES_DIR "/enlightenment.png";
32 static const char *commands = \
34 "\tw - write new pixel data to image\n"
35 "\ti - print image info\n"
36 "\ta - save noise image to disk (/tmp dir)\n"
39 const char *file_path = "/tmp/evas-images2-example.png";
40 const char *quality_str = "quality=100";
47 Evas_Object *logo, *logo1;
50 static struct test_data d = {0};
53 _on_destroy(Ecore_Evas *ee __UNUSED__)
55 ecore_main_loop_quit();
58 /* here just to keep our example's window size and background image's
59 * size in synchrony */
61 _canvas_resize_cb(Ecore_Evas *ee)
65 ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
66 evas_object_resize(d.bg, w, h);
67 evas_object_resize(d.logo, w / 2, h);
68 evas_object_move(d.logo1, w / 2, 0);
69 evas_object_resize(d.logo1, w / 2, h);
73 _on_keydown(void *data __UNUSED__,
74 Evas *evas __UNUSED__,
75 Evas_Object *o __UNUSED__,
78 Evas_Event_Key_Down *ev = einfo;
80 if (strcmp(ev->keyname, "h") == 0) /* print help */
82 fprintf(stdout, commands);
86 if (strcmp(ev->keyname, "i") == 0) /* change proxy's source */
88 int stride = evas_object_image_stride_get(d.logo);
91 evas_object_image_size_get(d.logo, &w, &h);
93 printf("image size: %dx%d; stride: %d\n", w, h, stride);
98 if (strcmp(ev->keyname, "w") == 0) /* save noise image to disk */
101 char *pixels = evas_object_image_data_get(d.logo, EINA_FALSE);
105 Eina_Bool equal = EINA_TRUE;
107 evas_object_image_size_get(d.logo, &w, &h);
108 stride = evas_object_image_stride_get(d.logo);
110 bufpixels = malloc(sizeof(char) * stride * h);
111 memcpy(bufpixels, pixels, sizeof(char) * stride * h);
113 pixels = evas_object_image_data_get(d.logo, EINA_TRUE);
115 for (i = 0; i < (stride * h); i++)
117 if (bufpixels[i] != pixels[i])
127 printf("write pixels different from readonly pixels.\n");
129 for (i = ((stride * h) / 4) ; i < ((stride * h) / 2) ; i++)
134 // evas_object_image_data_set(d.logo, pixels);
135 evas_object_image_data_update_add(d.logo, 0, 0, w, h);
144 // unsigned int pixels[(WIDTH / 4) * (HEIGHT / 4)];
146 if (!ecore_evas_init())
149 /* this will give you a window with an Evas canvas under the first
150 * engine available */
151 d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
155 ecore_evas_callback_destroy_set(d.ee, _on_destroy);
156 ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
157 ecore_evas_show(d.ee);
159 /* the canvas pointer, de facto */
160 d.evas = ecore_evas_get(d.ee);
162 d.bg = evas_object_rectangle_add(d.evas);
163 evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */
164 evas_object_move(d.bg, 0, 0); /* at canvas' origin */
165 evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */
166 evas_object_show(d.bg);
168 evas_object_focus_set(d.bg, EINA_TRUE);
169 evas_object_event_callback_add(
170 d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
172 d.logo = evas_object_image_filled_add(d.evas);
174 evas_object_image_file_set(d.logo, img_path, NULL);
175 evas_object_resize(d.logo, WIDTH / 2, HEIGHT);
176 evas_object_show(d.logo);
178 d.logo1 = evas_object_image_filled_add(d.evas);
179 evas_object_image_file_set(d.logo1, img_path, NULL);
180 evas_object_resize(d.logo1, WIDTH / 2, HEIGHT);
181 evas_object_move(d.logo1, WIDTH / 2, 0);
182 evas_object_show(d.logo1);
184 fprintf(stdout, commands);
185 ecore_main_loop_begin();
187 ecore_evas_free(d.ee);
188 ecore_evas_shutdown();
192 fprintf(stderr, "you got to have at least one evas engine built and linked"
193 " up to ecore-evas for this example to run properly.\n");
194 ecore_evas_shutdown();