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
|
/*
* Copyright © 2010 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_pattern_t *pattern;
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_paint (cr);
pattern = cairo_pattern_create_linear (width/2, 0, width/2, 0);
cairo_pattern_add_color_stop_rgb (pattern, 0, 1, 0, 0);
cairo_pattern_add_color_stop_rgb (pattern, 1, 0, 0, 1);
cairo_set_source (cr, pattern);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_NONE); /* nothing */
cairo_rectangle (cr, 0, 0, width, height/2);
cairo_fill (cr);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD); /* step */
cairo_rectangle (cr, 0, height/2, width, height/2);
cairo_fill (cr);
cairo_pattern_destroy (pattern);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (linear_step_function,
"Tests creating a step function using a linear gradient",
"gradient, linear", /* keywords */
NULL, /* requirements */
40, 40,
NULL, draw)
|
