1 /*
2 * Copyright © 2008 Chris Wilson
3 *
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.
14 *
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.
22 *
23 * Author: Chris Wilson <chris@chris-wilson.co.uk>
24 */
25
26 #include "cairo-test.h"
27
28 static cairo_test_status_t
draw(cairo_t * cr,int width,int height)29 draw (cairo_t *cr, int width, int height)
30 {
31 uint32_t data[] = {
32 0xaa000000, 0x55000000,
33 0x55000000, 0xaa000000,
34 };
35
36 cairo_surface_t *mask, *mask2;
37 cairo_pattern_t *pattern;
38 cairo_t *cr2;
39
40 cairo_set_source_rgb (cr, 0, 0, 1.0);
41 cairo_paint (cr);
42
43 mask = cairo_surface_create_similar (cairo_get_group_target (cr),
44 CAIRO_CONTENT_ALPHA,
45 width, height);
46 cr2 = cairo_create (mask);
47 cairo_surface_destroy (mask);
48
49 cairo_save (cr2); {
50 cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
51 cairo_paint (cr2);
52 } cairo_restore (cr2);
53
54 pattern = cairo_pattern_create_linear (0, 0, width, height);
55 cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
56 cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
57 cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
58 cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
59 cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
60 cairo_set_source (cr2, pattern);
61 cairo_pattern_destroy (pattern);
62
63 mask2 = cairo_image_surface_create_for_data ((unsigned char *) data,
64 CAIRO_FORMAT_ARGB32, 2, 2, 8);
65 pattern = cairo_pattern_create_for_surface (mask2);
66 cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
67 cairo_mask (cr2, pattern);
68 cairo_pattern_destroy (pattern);
69
70 cairo_set_source_rgb (cr, 1.0, 0, 0);
71 cairo_mask_surface (cr, cairo_get_target (cr2), 0, 0);
72 cairo_destroy (cr2);
73
74 cairo_surface_finish (mask2); /* data will go out of scope */
75 cairo_surface_destroy (mask2);
76
77 return CAIRO_TEST_SUCCESS;
78 }
79
80 CAIRO_TEST (smask_image_mask,
81 "Test the support of \"soft\" masks with a secondary image mask",
82 "smask, image", /* keywords */
83 NULL, /* requirements */
84 60, 60,
85 NULL, draw)
86