| /* |
| * Copyright © 2005 Red Hat, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software |
| * and its documentation for any purpose is hereby granted without |
| * fee, provided that the above copyright notice appear in all copies |
| * and that both that copyright notice and this permission notice |
| * appear in supporting documentation, and that the name of |
| * Red Hat, Inc. not be used in advertising or publicity pertaining to |
| * distribution of the software without specific, written prior |
| * permission. Red Hat, Inc. makes no representations about the |
| * suitability of this software for any purpose. It is provided "as |
| * is" without express or implied warranty. |
| * |
| * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS |
| * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL, |
| * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR |
| * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * Author: Owen Taylor <otaylor@redhat.com> |
| */ |
| |
| #include <math.h> |
| #include "cairo-test.h" |
| #include <stdio.h> |
| |
| #define SIZE 40 |
| |
| static cairo_test_status_t |
| draw (cairo_t *cr, int width, int height) |
| { |
| cairo_pattern_t *pattern; |
| cairo_matrix_t matrix; |
| |
| /* Paint a diagonal division as a test image */ |
| cairo_set_source_rgb (cr, 1, 1, 1); /* White */ |
| cairo_paint (cr); |
| |
| cairo_move_to (cr, SIZE, 0); |
| cairo_line_to (cr, SIZE, SIZE); |
| cairo_line_to (cr, 0, SIZE); |
| |
| cairo_set_source_rgb (cr, 0, 0, 0); |
| cairo_fill (cr); |
| |
| /* Create a pattern with the target surface as the source, |
| * offset by SIZE/2 |
| */ |
| pattern = cairo_pattern_create_for_surface (cairo_get_group_target (cr)); |
| |
| cairo_matrix_init_translate (&matrix, - SIZE / 2, - SIZE / 2); |
| cairo_pattern_set_matrix (pattern, &matrix); |
| |
| cairo_set_source (cr, pattern); |
| cairo_pattern_destroy (pattern); |
| |
| /* Copy two rectangles from the upper-left quarter of the image to |
| * the lower right. It will work if we use cairo_fill(), but the |
| * cairo_clip() cairo_paint() combination fails because the clip |
| * on the surface as a destination affects it as the source as |
| * well. |
| */ |
| cairo_rectangle (cr, |
| 2 * SIZE / 4, 2 * SIZE / 4, |
| SIZE / 4, SIZE / 4); |
| cairo_rectangle (cr, |
| 3 * SIZE / 4, 3 * SIZE / 4, |
| SIZE / 4, SIZE / 4); |
| cairo_clip (cr); |
| cairo_paint (cr); |
| |
| return CAIRO_TEST_SUCCESS; |
| |
| } |
| |
| CAIRO_TEST (self_copy, |
| "Test copying from a surface to itself with a clip", |
| "paint", /* keywords */ |
| NULL, /* requirements */ |
| SIZE, SIZE, |
| NULL, draw) |