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 Worth <cworth@cworth.org>
25 */
26
27 #include "cairo-test.h"
28
29 /* This is a test case for the following bug:
30 *
31 * Crash in cairo_stroke_extents when line width is 0 and line cap is ROUND
32 * (_cairo_pen_find_active_cw_vertex_index)
33 * https://bugs.freedesktop.org/show_bug.cgi?id=10231
34 */
35
36 static cairo_test_status_t
draw(cairo_t * cr,int width,int height)37 draw (cairo_t *cr, int width, int height)
38 {
39 double x1, y1, x2, y2;
40
41 cairo_move_to (cr, 0.0, 0.0);
42 cairo_line_to (cr, 100.0, 100.0);
43 cairo_set_line_width (cr, 0.0);
44
45 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
46 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
47 cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);
48 cairo_in_stroke (cr, 50, 50);
49 cairo_stroke_preserve (cr);
50
51 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
52 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
53 cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);
54 cairo_in_stroke (cr, 50, 50);
55 cairo_stroke_preserve (cr);
56
57 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
58 cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
59 cairo_stroke_extents (cr, &x1, &y1, &x2, &y2);
60 cairo_in_stroke (cr, 50, 50);
61 cairo_stroke (cr);
62
63 return CAIRO_TEST_SUCCESS;
64 }
65
66 CAIRO_TEST (line_width_zero,
67 "Test all stroke operations and all cap,join styles with line width of zero",
68 "stroke", /* keywords */
69 NULL, /* requirements */
70 0, 0,
71 NULL, draw)
72