2 * Simple Ecore_Evas example on the Evas buffer engine wrapper
5 * You must have Evas compiled with the buffer engine.
10 * gcc -o evas-buffer-simple evas-buffer-simple.c `pkg-config --libs --cflags evas evas-software-buffer`
22 #include <Ecore_Evas.h>
28 static Ecore_Evas *ee;
30 /* support function to save scene as PPM image */
32 _scene_save(Evas *canvas,
35 const unsigned int *pixels, *pixels_end;
39 evas_output_size_get(canvas, &width, &height);
41 f = fopen(dest, "wb+");
44 fprintf(stderr, "ERROR: could not open for writing '%s': %s\n",
45 dest, strerror(errno));
49 pixels = ecore_evas_buffer_pixels_get(ee);
50 pixels_end = pixels + (width * height);
52 /* PPM P6 format is dead simple to write: */
53 fprintf(f, "P6\n%d %d\n255\n", width, height);
54 for (; pixels < pixels_end; pixels++)
58 r = ((*pixels) & 0xff0000) >> 16;
59 g = ((*pixels) & 0x00ff00) >> 8;
60 b = (*pixels) & 0x0000ff;
62 fprintf(f, "%c%c%c", r, g, b);
66 printf("Saved scene as '%s'\n", dest);
73 Evas_Object *bg, *r1, *r2, *r3;
77 ee = ecore_evas_buffer_new(WIDTH, HEIGHT);
80 canvas = ecore_evas_get(ee);
82 bg = evas_object_rectangle_add(canvas);
83 evas_object_color_set(bg, 255, 255, 255, 255); /* white bg */
84 evas_object_move(bg, 0, 0); /* at origin */
85 evas_object_resize(bg, WIDTH, HEIGHT); /* covers full canvas */
88 r1 = evas_object_rectangle_add(canvas);
89 evas_object_color_set(r1, 255, 0, 0, 255); /* 100% opaque red */
90 evas_object_move(r1, 10, 10);
91 evas_object_resize(r1, 100, 100);
94 r2 = evas_object_rectangle_add(canvas);
95 evas_object_color_set(r2, 0, 128, 0, 128); /* 50% opaque green */
96 evas_object_move(r2, 10, 10);
97 evas_object_resize(r2, 50, 50);
100 r3 = evas_object_rectangle_add(canvas);
101 evas_object_color_set(r3, 0, 128, 0, 255); /* 100% opaque dark green */
102 evas_object_move(r3, 60, 60);
103 evas_object_resize(r3, 50, 50);
104 evas_object_show(r3);
106 ecore_evas_manual_render(ee);
107 _scene_save(canvas, "/tmp/evas-buffer-simple-render.ppm");
110 ecore_evas_shutdown();
115 fprintf(stderr, "You got to have at least one Evas engine built"
116 " and linked up to ecore-evas for this example to run"
118 ecore_evas_shutdown();