#include <stdio.h>

#include <stdlib.h>

#include "pixman.h"

#include "gtk-utils.h"

int

main (int argc, char **argv)

{

#define WIDTH 400

#define HEIGHT 200

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

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

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

    pixman_image_t *grad_img;

    pixman_image_t *alpha_img;

    pixman_image_t *dest_img;

    pixman_image_t *src_img;

    int i;

    pixman_gradient_stop_t stops[2] =

	{

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

	    { pixman_int_to_fixed (1), { 0xffff, 0x0000, 0x1111, 0xffff } }

	};

    pixman_point_fixed_t p1 = { pixman_double_to_fixed (0), 0 };

    pixman_point_fixed_t p2 = { pixman_double_to_fixed (WIDTH),

				pixman_int_to_fixed (0) };

#if 0

    pixman_transform_t trans = {

	{ { pixman_double_to_fixed (2), pixman_double_to_fixed (0.5), pixman_double_to_fixed (-100), },

	  { pixman_double_to_fixed (0), pixman_double_to_fixed (3), pixman_double_to_fixed (0), },

	  { pixman_double_to_fixed (0), pixman_double_to_fixed (0.000), pixman_double_to_fixed (1.0) } 

	}

    };

#else

    pixman_transform_t trans = {

	{ { pixman_fixed_1, 0, 0 },

	  { 0, pixman_fixed_1, 0 },

	  { 0, 0, pixman_fixed_1 } }

    };

#endif

#if 0

    pixman_point_fixed_t c_inner;

    pixman_point_fixed_t c_outer;

    pixman_fixed_t r_inner;

    pixman_fixed_t r_outer;

#endif

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

	alpha[i] = 0x4f00004f; /* pale blue */

    alpha_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,

					 WIDTH, HEIGHT, 

					  alpha,

					 WIDTH * 4);

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

	dest[i] = 0xffffff00;		/* yellow */

    dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,

					 WIDTH, HEIGHT, 

					 dest,

					 WIDTH * 4);

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

	src[i] = 0xffff0000;

    src_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,

					WIDTH, HEIGHT,

					src,

					WIDTH * 4);

#if 0

    c_inner.x = pixman_double_to_fixed (50.0);

    c_inner.y = pixman_double_to_fixed (50.0);

    c_outer.x = pixman_double_to_fixed (50.0);

    c_outer.y = pixman_double_to_fixed (50.0);

    r_inner = 0;

    r_outer = pixman_double_to_fixed (50.0);

    grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,

						    stops, 2);

#endif

#if 0

    grad_img = pixman_image_create_conical_gradient (&c_inner, r_inner,

						    stops, 2);

    grad_img = pixman_image_create_linear_gradient (&c_inner, &c_outer,

						   r_inner, r_outer,

						   stops, 2);

#endif

    grad_img = pixman_image_create_linear_gradient  (&p1, &p2,

						    stops, 2);

    pixman_image_set_transform (grad_img, &trans);

    pixman_image_set_repeat (grad_img, PIXMAN_REPEAT_PAD);

    pixman_image_composite (PIXMAN_OP_OVER, grad_img, NULL, alpha_img,

			    0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);

    pixman_image_set_alpha_map (src_img, alpha_img, 10, 10);

    pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,

			    0, 0, 0, 0, 0, 0, 10 * WIDTH, HEIGHT);

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

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

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

    show_image (dest_img);

    pixman_image_unref (src_img);

    pixman_image_unref (grad_img);

    pixman_image_unref (alpha_img);

    free (dest);

    return 0;

}