1 /*
2 * Copyright © 2007 Red Hat, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Author: Carl D. Worth <cworth@cworth.org>
25 */
26
27 #include "cairo-test.h"
28
29 #define SIZE 40
30 #define PAD 2
31 #define WIDTH (PAD + SIZE + PAD)
32 #define HEIGHT WIDTH
33
34 /* This test is designed to explore the interactions of "native" and
35 * "fallback" objects. For the ps surface, OVER with non-1.0 opacity
36 * will be a fallback while SOURCE will be native. For the pdf
37 * surface, it's the reverse where OVER is native while SOURCE is a
38 * fallback. */
39
40 static cairo_test_status_t
draw(cairo_t * cr,int width,int height)41 draw (cairo_t *cr, int width, int height)
42 {
43 cairo_translate (cr, PAD, PAD);
44
45 /* A red triangle with SOURCE */
46 cairo_move_to (cr, SIZE / 2, SIZE / 2);
47 cairo_rel_line_to (cr, SIZE / 2, 0);
48 cairo_rel_line_to (cr, -SIZE / 2, SIZE / 2);
49 cairo_close_path (cr);
50
51 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
52 cairo_set_source_rgba (cr, 1., 0., 0., 0.5); /* 50% red */
53
54 cairo_fill (cr);
55
56 /* A green circle with OVER */
57 cairo_arc (cr, SIZE / 2, SIZE / 2, SIZE / 4, 0., 2. * M_PI);
58
59 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
60 cairo_set_source_rgba (cr, 0., 1., 0., 0.5); /* 50% green */
61
62 cairo_fill (cr);
63
64 return CAIRO_TEST_SUCCESS;
65 }
66
67 CAIRO_TEST (over_above_source,
68 "A simple test drawing a circle with OVER after a triangle drawn with SOURCE",
69 "operator", /* keywords */
70 NULL, /* requirements */
71 WIDTH, HEIGHT,
72 NULL, draw)
73