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#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;
}
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