1#include <stdio.h>
2#include <stdlib.h>
3#include "pixman.h"
4#include "gtk-utils.h"
5
6int
7main (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