2 * Copyright © 2008 Chris Wilson
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Chris Wilson not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Chris Wilson makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Chris Wilson <chris@chris-wilson.co.uk>
26 #include "cairo-test.h"
28 #define N_OPERATORS (CAIRO_OPERATOR_SATURATE + 1)
32 static cairo_test_status_t
33 draw (cairo_t *cr, int width, int height)
37 cairo_translate (cr, PAD, PAD);
39 for (n = 0; n < N_OPERATORS; n++) {
40 cairo_reset_clip (cr);
41 cairo_rectangle (cr, 0, 0, SIZE, SIZE);
44 cairo_set_source_rgb (cr, 1, 0, 0);
45 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
46 cairo_rectangle (cr, 0, 0, SIZE-PAD, SIZE-PAD);
49 cairo_set_source_rgba (cr, 0, 0, 1, .33);
50 cairo_set_operator (cr, n);
51 cairo_rectangle (cr, PAD, PAD, SIZE-PAD, SIZE-PAD);
54 cairo_translate (cr, SIZE+PAD, 0);
57 return CAIRO_TEST_SUCCESS;
60 CAIRO_TEST (operator_alpha,
61 "Tests using set_operator() with an non-opaque source",
62 "operator, alpha", /* keywords */
63 NULL, /* requirements */
64 (SIZE+PAD) * N_OPERATORS + PAD, SIZE + 2*PAD,