#include <stdio.h>

#include <stdlib.h>

#include "pixman.h"

#include "gtk-utils.h"

#define WIDTH 200

#define HEIGHT 200

static pixman_image_t *

create_solid_bits (uint32_t pixel)

{

    uint32_t *pixels = malloc (WIDTH * HEIGHT * 4);

    int i;

    for (i = 0; i < WIDTH * HEIGHT; ++i)

	pixels[i] = pixel;

    return pixman_image_create_bits (PIXMAN_a8r8g8b8,

				     WIDTH, HEIGHT, 

				     pixels,

				     WIDTH * 4);

}

int

main (int argc, char **argv)

{

    pixman_image_t *gradient_img;

    pixman_image_t *src_img, *dst_img;

    pixman_gradient_stop_t stops[2] =

	{

	    { pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } },

	    { pixman_int_to_fixed (1), { 0xffff, 0xffff, 0x0000, 0xffff } }

	};

#if 0

    pixman_point_fixed_t p1 = { 0, 0 };

    pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH),

				pixman_int_to_fixed (HEIGHT) };

#endif

    pixman_point_fixed_t c_inner;

    pixman_point_fixed_t c_outer;

    pixman_fixed_t r_inner;

    pixman_fixed_t r_outer;

    pixman_region32_t clip_region;

    pixman_transform_t trans = {

	{ { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), },

	  { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), },

	  { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) } 

	}

    };

    src_img = create_solid_bits (0xff0000ff);

    c_inner.x = pixman_double_to_fixed (100.0);

    c_inner.y = pixman_double_to_fixed (100.0);

    c_outer.x = pixman_double_to_fixed (100.0);

    c_outer.y = pixman_double_to_fixed (100.0);

    r_inner = 0;

    r_outer = pixman_double_to_fixed (100.0);

    gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer,

							r_inner, r_outer,

							stops, 2);

#if 0

    gradient_img = pixman_image_create_linear_gradient  (&p1, &p2,

							 stops, 2);

#endif

    pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img,

			    0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);

    pixman_region32_init_rect (&clip_region, 50, 0, 100, 200);

    pixman_image_set_clip_region32 (src_img, &clip_region);

    pixman_image_set_source_clipping (src_img, TRUE);

    pixman_image_set_has_client_clip (src_img, TRUE);

    pixman_image_set_transform (src_img, &trans);

    pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);

    dst_img = create_solid_bits (0xffff0000);

    pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img,

			    0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);

#if 0

    printf ("0, 0: %x\n", src[0]);

    printf ("10, 10: %x\n", src[10 * 10 + 10]);

    printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]);

#endif

    show_image (dst_img);

    pixman_image_unref (gradient_img);

    pixman_image_unref (src_img);

    return 0;

}