| #include "../test/utils.h" |
| #include "gtk-utils.h" |
| |
| #define SIZE 128 |
| #define GRADIENTS_PER_ROW 7 |
| #define NUM_ROWS ((NUM_GRADIENTS + GRADIENTS_PER_ROW - 1) / GRADIENTS_PER_ROW) |
| #define WIDTH (SIZE * GRADIENTS_PER_ROW) |
| #define HEIGHT (SIZE * NUM_ROWS) |
| #define NUM_GRADIENTS 35 |
| |
| #define double_to_color(x) \ |
| (((uint32_t) ((x)*65536)) - (((uint32_t) ((x)*65536)) >> 16)) |
| |
| #define PIXMAN_STOP(offset,r,g,b,a) \ |
| { pixman_double_to_fixed (offset), \ |
| { \ |
| double_to_color (r), \ |
| double_to_color (g), \ |
| double_to_color (b), \ |
| double_to_color (a) \ |
| } \ |
| } |
| |
| |
| static const pixman_gradient_stop_t stops[] = { |
| PIXMAN_STOP (0.25, 1, 0, 0, 0.7), |
| PIXMAN_STOP (0.5, 1, 1, 0, 0.7), |
| PIXMAN_STOP (0.75, 0, 1, 0, 0.7), |
| PIXMAN_STOP (1.0, 0, 0, 1, 0.7) |
| }; |
| |
| #define NUM_STOPS (sizeof (stops) / sizeof (stops[0])) |
| |
| static pixman_image_t * |
| create_conical (int index) |
| { |
| pixman_point_fixed_t c; |
| double angle; |
| |
| c.x = pixman_double_to_fixed (0); |
| c.y = pixman_double_to_fixed (0); |
| |
| angle = (0.5 / NUM_GRADIENTS + index / (double)NUM_GRADIENTS) * 720 - 180; |
| |
| return pixman_image_create_conical_gradient ( |
| &c, pixman_double_to_fixed (angle), stops, NUM_STOPS); |
| } |
| |
| int |
| main (int argc, char **argv) |
| { |
| pixman_transform_t transform; |
| pixman_image_t *src_img, *dest_img; |
| int i; |
| |
| enable_divbyzero_exceptions (); |
| |
| dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, |
| WIDTH, HEIGHT, |
| NULL, 0); |
| |
| draw_checkerboard (dest_img, 25, 0xffaaaaaa, 0xff888888); |
| |
| pixman_transform_init_identity (&transform); |
| |
| pixman_transform_translate (NULL, &transform, |
| pixman_double_to_fixed (0.5), |
| pixman_double_to_fixed (0.5)); |
| |
| pixman_transform_scale (NULL, &transform, |
| pixman_double_to_fixed (SIZE), |
| pixman_double_to_fixed (SIZE)); |
| pixman_transform_translate (NULL, &transform, |
| pixman_double_to_fixed (0.5), |
| pixman_double_to_fixed (0.5)); |
| |
| for (i = 0; i < NUM_GRADIENTS; i++) |
| { |
| int column = i % GRADIENTS_PER_ROW; |
| int row = i / GRADIENTS_PER_ROW; |
| |
| src_img = create_conical (i); |
| pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL); |
| |
| pixman_image_set_transform (src_img, &transform); |
| |
| pixman_image_composite32 ( |
| PIXMAN_OP_OVER, src_img, NULL,dest_img, |
| 0, 0, 0, 0, column * SIZE, row * SIZE, |
| SIZE, SIZE); |
| |
| pixman_image_unref (src_img); |
| } |
| |
| show_image (dest_img); |
| |
| pixman_image_unref (dest_img); |
| |
| return 0; |
| } |