1#include <stdio.h>
2#include <stdlib.h>
3#include "pixman.h"
4#include "gtk-utils.h"
5
6#define WIDTH 200
7#define HEIGHT 200
8
9static pixman_image_t *
10create_solid_bits (uint32_t pixel)
11{
12    uint32_t *pixels = malloc (WIDTH * HEIGHT * 4);
13    int i;
14
15    for (i = 0; i < WIDTH * HEIGHT; ++i)
16	pixels[i] = pixel;
17
18    return pixman_image_create_bits (PIXMAN_a8r8g8b8,
19				     WIDTH, HEIGHT,
20				     pixels,
21				     WIDTH * 4);
22}
23
24int
25main (int argc, char **argv)
26{
27    pixman_image_t *gradient_img;
28    pixman_image_t *src_img, *dst_img;
29    pixman_gradient_stop_t stops[2] =
30	{
31	    { pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } },
32	    { pixman_int_to_fixed (1), { 0xffff, 0xffff, 0x0000, 0xffff } }
33	};
34#if 0
35    pixman_point_fixed_t p1 = { 0, 0 };
36    pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH),
37				pixman_int_to_fixed (HEIGHT) };
38#endif
39    pixman_point_fixed_t c_inner;
40    pixman_point_fixed_t c_outer;
41    pixman_fixed_t r_inner;
42    pixman_fixed_t r_outer;
43    pixman_region32_t clip_region;
44    pixman_transform_t trans = {
45	{ { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), },
46	  { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), },
47	  { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) }
48	}
49    };
50
51    src_img = create_solid_bits (0xff0000ff);
52
53    c_inner.x = pixman_double_to_fixed (100.0);
54    c_inner.y = pixman_double_to_fixed (100.0);
55    c_outer.x = pixman_double_to_fixed (100.0);
56    c_outer.y = pixman_double_to_fixed (100.0);
57    r_inner = 0;
58    r_outer = pixman_double_to_fixed (100.0);
59
60    gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer,
61							r_inner, r_outer,
62							stops, 2);
63
64#if 0
65    gradient_img = pixman_image_create_linear_gradient  (&p1, &p2,
66							 stops, 2);
67
68#endif
69
70    pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img,
71			    0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
72
73    pixman_region32_init_rect (&clip_region, 50, 0, 100, 200);
74    pixman_image_set_clip_region32 (src_img, &clip_region);
75    pixman_image_set_source_clipping (src_img, TRUE);
76    pixman_image_set_has_client_clip (src_img, TRUE);
77    pixman_image_set_transform (src_img, &trans);
78    pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);
79
80    dst_img = create_solid_bits (0xffff0000);
81    pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img,
82			    0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
83
84
85#if 0
86    printf ("0, 0: %x\n", src[0]);
87    printf ("10, 10: %x\n", src[10 * 10 + 10]);
88    printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
89#endif
90
91    show_image (dst_img);
92
93    pixman_image_unref (gradient_img);
94    pixman_image_unref (src_img);
95
96    return 0;
97}
98