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 WIDTH 2
30 #define HEIGHT 2
31
32 static cairo_test_status_t
draw(cairo_t * cr,int width,int height)33 draw (cairo_t *cr, int width, int height)
34 {
35 cairo_surface_t *surface;
36 /* Four green pixels with different "alpha" values, (but which
37 * should be entirely ignored). */
38 uint32_t colors[4] = {
39 0xff00ff00, 0x8800ff00,
40 0x4400ff00, 0x0000ff00
41 };
42
43 surface = cairo_image_surface_create_for_data ((unsigned char *) colors,
44 CAIRO_FORMAT_RGB24, 2, 2, 8);
45
46 cairo_set_source_surface (cr, surface, 0, 0);
47 cairo_paint (cr);
48
49 cairo_surface_finish (surface); /* colors will go out of scope */
50 cairo_surface_destroy (surface);
51
52 return CAIRO_TEST_SUCCESS;
53 }
54
55 CAIRO_TEST (rgb24_ignore_alpha,
56 "Test that when using an RGB24 image as a source, there is no alpha channel",
57 "image, alpha", /* keywords */
58 NULL, /* requirements */
59 WIDTH, HEIGHT,
60 NULL, draw)
61