1 /*
2 * Copyright © 2005 Mozilla Corporation
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 * Mozilla Corporation not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Mozilla Corporation 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 * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION 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: Vladimir Vukicevic <vladimir@pobox.com>
24 */
25
26 #include "cairo-test.h"
27 #include <math.h>
28 #include <stdio.h>
29
30 #define SIZE 12
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 *source;
36 cairo_t *cr2;
37
38 source = cairo_surface_create_similar (cairo_get_group_target (cr),
39 CAIRO_CONTENT_COLOR_ALPHA,
40 SIZE, SIZE);
41 cr2 = cairo_create (source);
42 cairo_surface_destroy (source);
43
44 /* Fill the source surface with green */
45 cairo_set_source_rgb (cr2, 0, 1, 0);
46 cairo_paint (cr2);
47
48 /* Draw a blue square in the middle of the source with clipping.
49 * Note that we are only clipping within a save/restore block but
50 * the buggy behavior demonstrates that the clip remains present
51 * on the surface. */
52 cairo_save (cr2);
53 cairo_rectangle (cr2,
54 SIZE / 4, SIZE / 4,
55 SIZE / 2, SIZE / 2);
56 cairo_clip (cr2);
57 cairo_set_source_rgb (cr2, 0, 0, 1);
58 cairo_paint (cr2);
59 cairo_restore (cr2);
60
61 /* Fill the destination surface with solid red (should not appear
62 * in final result) */
63 cairo_set_source_rgb (cr, 1, 0, 0);
64 cairo_paint (cr);
65
66 /* Now draw the source surface onto the destination with scaling. */
67 cairo_scale (cr, 2.0, 1.0);
68
69 cairo_set_source_surface (cr, cairo_get_target (cr2), 0, 0);
70 cairo_destroy (cr2);
71
72 cairo_paint (cr);
73
74 return CAIRO_TEST_SUCCESS;
75 }
76
77 CAIRO_TEST (source_clip_scale,
78 "Test that a source surface is not affected by a clip when scaling",
79 "clip", /* keywords */
80 NULL, /* requirements */
81 SIZE * 2, SIZE,
82 NULL, draw)
83