1 #include <stdio.h> 2 #include <stdlib.h> 3 #include "pixman.h" 4 #include "gtk-utils.h" 5 6 #define WIDTH 200 7 #define HEIGHT 200 8 9 static pixman_image_t * 10 create_solid_bits (uint32_t pixel) 11 { 12 uint32_t *pixels = malloc (WIDTH * HEIGHT * 4); 13 int i; 14 15 for (i = 0; i < WIDTH * HEIGHT; ++i) 16 pixels[i] = pixel; 17 18 return pixman_image_create_bits (PIXMAN_a8r8g8b8, 19 WIDTH, HEIGHT, 20 pixels, 21 WIDTH * 4); 22 } 23 24 int 25 main (int argc, char **argv) 26 { 27 pixman_image_t *gradient_img; 28 pixman_image_t *src_img, *dst_img; 29 pixman_gradient_stop_t stops[2] = 30 { 31 { pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } }, 32 { pixman_int_to_fixed (1), { 0xffff, 0xffff, 0x0000, 0xffff } } 33 }; 34 #if 0 35 pixman_point_fixed_t p1 = { 0, 0 }; 36 pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH), 37 pixman_int_to_fixed (HEIGHT) }; 38 #endif 39 pixman_point_fixed_t c_inner; 40 pixman_point_fixed_t c_outer; 41 pixman_fixed_t r_inner; 42 pixman_fixed_t r_outer; 43 pixman_region32_t clip_region; 44 pixman_transform_t trans = { 45 { { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), }, 46 { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), }, 47 { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) } 48 } 49 }; 50 51 src_img = create_solid_bits (0xff0000ff); 52 53 c_inner.x = pixman_double_to_fixed (100.0); 54 c_inner.y = pixman_double_to_fixed (100.0); 55 c_outer.x = pixman_double_to_fixed (100.0); 56 c_outer.y = pixman_double_to_fixed (100.0); 57 r_inner = 0; 58 r_outer = pixman_double_to_fixed (100.0); 59 60 gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer, 61 r_inner, r_outer, 62 stops, 2); 63 64 #if 0 65 gradient_img = pixman_image_create_linear_gradient (&p1, &p2, 66 stops, 2); 67 68 #endif 69 70 pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img, 71 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT); 72 73 pixman_region32_init_rect (&clip_region, 50, 0, 100, 200); 74 pixman_image_set_clip_region32 (src_img, &clip_region); 75 pixman_image_set_source_clipping (src_img, TRUE); 76 pixman_image_set_has_client_clip (src_img, TRUE); 77 pixman_image_set_transform (src_img, &trans); 78 pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL); 79 80 dst_img = create_solid_bits (0xffff0000); 81 pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img, 82 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT); 83 84 85 #if 0 86 printf ("0, 0: %x\n", src[0]); 87 printf ("10, 10: %x\n", src[10 * 10 + 10]); 88 printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]); 89 #endif 90 91 show_image (dst_img); 92 93 pixman_image_unref (gradient_img); 94 pixman_image_unref (src_img); 95 96 return 0; 97 } 98
