1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*
* Copyright © 2005 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Carl Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#include <stdlib.h>
#include <stdio.h>
#define WIDTH 2
#define HEIGHT 2
cairo_test_t test = {
"create-from-png",
"Tests the creation of an image surface from a PNG file",
WIDTH, HEIGHT
};
static cairo_status_t
read_png_from_file (void *closure, unsigned char *data, unsigned int length)
{
FILE *file = closure;
size_t bytes_read;
bytes_read = fread (data, 1, length, file);
if (bytes_read != length)
return CAIRO_STATUS_READ_ERROR;
return CAIRO_STATUS_SUCCESS;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
char *srcdir = getenv ("srcdir");
char *filename;
FILE *file;
cairo_surface_t *surface;
xasprintf (&filename, "%s/%s", srcdir ? srcdir : ".",
"create-from-png-stream-ref.png");
file = fopen (filename, "r");
if (file == NULL) {
cairo_test_log ("Error: failed to open file: %s\n", filename);
return CAIRO_TEST_FAILURE;
}
surface = cairo_image_surface_create_from_png_stream (read_png_from_file,
file);
fclose (file);
if (surface == NULL) {
cairo_test_log ("Error: failed to create surface from PNG: %s\n", filename);
free (filename);
return CAIRO_TEST_FAILURE;
}
free (filename);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_paint (cr);
cairo_surface_destroy (surface);
return CAIRO_TEST_SUCCESS;
}
int
main (void)
{
return cairo_test (&test, draw);
}
|