| #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; |
| } |