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 static cairo_test_status_t
29 draw (cairo_t *cr, int width, int height)
31 double dash[2] = { 8, 4 };
38 /* fill the background using a big circle */
39 cairo_arc (cr, 0, 0, 4 * radius, 0, 2 * M_PI);
42 /* a rotated square - overlapping the corners */
45 cairo_translate (cr, width/2, height/2);
46 cairo_rotate (cr, M_PI/4);
47 cairo_scale (cr, M_SQRT2, M_SQRT2);
48 cairo_rectangle (cr, -width/2, -height/2, width, height);
50 cairo_set_source_rgba (cr, 0, 1, 0, .5);
51 cairo_set_line_width (cr, radius/2);
55 /* and put some circles in the corners */
56 cairo_set_source_rgb (cr, 1, 1, 1);
57 cairo_new_sub_path (cr);
58 cairo_arc (cr, 0, 0, radius/4, 0, 2 * M_PI);
59 cairo_new_sub_path (cr);
60 cairo_arc (cr, width, 0, radius/4, 0, 2 * M_PI);
61 cairo_new_sub_path (cr);
62 cairo_arc (cr, width, height, radius/4, 0, 2 * M_PI);
63 cairo_new_sub_path (cr);
64 cairo_arc (cr, 0, height, radius/4, 0, 2 * M_PI);
67 /* a couple of pixel-aligned lines */
68 cairo_set_source_rgb (cr, 0, 0, 1);
69 cairo_move_to (cr, width/2, -height);
70 cairo_rel_line_to (cr, 0, 3*height);
71 cairo_move_to (cr, -width, height/2);
72 cairo_rel_line_to (cr, 3*width, 0);
75 /* a couple of dashed diagonals */
77 cairo_set_source_rgb (cr, 1, 0, 0);
78 cairo_set_dash (cr, dash, 2, 0);
79 cairo_set_line_width (cr, 4.);
80 cairo_move_to (cr, -width, -height);
81 cairo_line_to (cr, width+width, height+height);
82 cairo_move_to (cr, width+width, -height);
83 cairo_line_to (cr, -width, height+height);
87 return CAIRO_TEST_SUCCESS;
90 CAIRO_TEST (clipped_trapezoids,
91 "Tests clipping of trapezoids larger than the surface",
92 "clip", /* keywords */
93 NULL, /* requirements */