| #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; |
| } |