1 #include <stdio.h> 2 #include <stdlib.h> 3 #include "pixman.h" 4 #include "gtk-utils.h" 5 6 int 7 main (int argc, char **argv) 8 { 9 #define WIDTH 400 10 #define HEIGHT 200 11 12 uint32_t *alpha = malloc (WIDTH * HEIGHT * 4); 13 uint32_t *dest = malloc (WIDTH * HEIGHT * 4); 14 uint32_t *src = malloc (WIDTH * HEIGHT * 4); 15 pixman_image_t *grad_img; 16 pixman_image_t *alpha_img; 17 pixman_image_t *dest_img; 18 pixman_image_t *src_img; 19 int i; 20 pixman_gradient_stop_t stops[2] = 21 { 22 { pixman_int_to_fixed (0), { 0x0000, 0x0000, 0x0000, 0x0000 } }, 23 { pixman_int_to_fixed (1), { 0xffff, 0x0000, 0x1111, 0xffff } } 24 }; 25 pixman_point_fixed_t p1 = { pixman_double_to_fixed (0), 0 }; 26 pixman_point_fixed_t p2 = { pixman_double_to_fixed (WIDTH), 27 pixman_int_to_fixed (0) }; 28 #if 0 29 pixman_transform_t trans = { 30 { { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), }, 31 { pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), }, 32 { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) } 33 } 34 }; 35 #else 36 pixman_transform_t trans = { 37 { { pixman_fixed_1, 0, 0 }, 38 { 0, pixman_fixed_1, 0 }, 39 { 0, 0, pixman_fixed_1 } } 40 }; 41 #endif 42 43 #if 0 44 pixman_point_fixed_t c_inner; 45 pixman_point_fixed_t c_outer; 46 pixman_fixed_t r_inner; 47 pixman_fixed_t r_outer; 48 #endif 49 50 for (i = 0; i < WIDTH * HEIGHT; ++i) 51 alpha[i] = 0x4f00004f; /* pale blue */ 52 53 alpha_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, 54 WIDTH, HEIGHT, 55 alpha, 56 WIDTH * 4); 57 58 for (i = 0; i < WIDTH * HEIGHT; ++i) 59 dest[i] = 0xffffff00; /* yellow */ 60 61 dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, 62 WIDTH, HEIGHT, 63 dest, 64 WIDTH * 4); 65 66 for (i = 0; i < WIDTH * HEIGHT; ++i) 67 src[i] = 0xffff0000; 68 69 src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, 70 WIDTH, HEIGHT, 71 src, 72 WIDTH * 4); 73 74 #if 0 75 c_inner.x = pixman_double_to_fixed (50.0); 76 c_inner.y = pixman_double_to_fixed (50.0); 77 c_outer.x = pixman_double_to_fixed (50.0); 78 c_outer.y = pixman_double_to_fixed (50.0); 79 r_inner = 0; 80 r_outer = pixman_double_to_fixed (50.0); 81 82 grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner, 83 stops, 2); 84 #endif 85 #if 0 86 grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner, 87 stops, 2); 88 grad_img = pixman_image_create_linear_gradient (&c_inner, &c_outer, 89 r_inner, r_outer, 90 stops, 2); 91 #endif 92 93 grad_img = pixman_image_create_linear_gradient (&p1, &p2, 94 stops, 2); 95 96 pixman_image_set_transform (grad_img, &trans); 97 pixman_image_set_repeat (grad_img, PIXMAN_REPEAT_PAD); 98 99 pixman_image_composite (PIXMAN_OP_OVER, grad_img, NULL, alpha_img, 100 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT); 101 102 pixman_image_set_alpha_map (src_img, alpha_img, 10, 10); 103 104 pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img, 105 0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT); 106 107 printf ("0, 0: %x\n", dest[0]); 108 printf ("10, 10: %x\n", dest[10 * 10 + 10]); 109 printf ("w, h: %x\n", dest[(HEIGHT - 1) * 100 + (WIDTH - 1)]); 110 111 show_image (dest_img); 112 113 pixman_image_unref (src_img); 114 pixman_image_unref (grad_img); 115 pixman_image_unref (alpha_img); 116 free (dest); 117 118 return 0; 119 } 120
