1 #include <stdio.h>
2 #include <stdlib.h>
3 #include "pixman.h"
4 #include "gtk-utils.h"
5
6 int
main(int argc,char ** argv)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