2 * Copyright 2010 Red Hat Inc.
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
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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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * Author: Benjamin Otte <otte@gnome.org>
27 #include "cairo-test.h"
29 #define CLIP_OFFSET 15
35 static cairo_test_status_t
36 draw (cairo_t *cr, int width, int height)
38 /* Neutral gray background */
39 cairo_set_source_rgb (cr, 0.51613, 0.55555, 0.51613);
42 /* the rest uses CAIRO_OPERATOR_SOURCE so we see better when something goes wrong */
43 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
46 cairo_rectangle (cr, CLIP_OFFSET, CLIP_OFFSET, CLIP_SIZE, CLIP_SIZE);
48 /* clip to the rectangle */
49 cairo_clip_preserve (cr);
51 /* push a group. We now have a device offset. */
52 cairo_push_group (cr);
54 /* push a group again. This is where the bug used to happen. */
55 cairo_push_group (cr);
58 cairo_set_source_rgb (cr, 1, 0, 0);
59 cairo_fill_preserve (cr);
61 /* make sure the stuff we drew ends up on the output */
62 cairo_pop_group_to_source (cr);
63 cairo_fill_preserve (cr);
65 cairo_pop_group_to_source (cr);
66 cairo_fill_preserve (cr);
68 return CAIRO_TEST_SUCCESS;
71 CAIRO_TEST (push_group_path_offset,
72 "Exercises a bug in Cairo 1.9 where existing paths applied the target's"
73 " device offset twice when cairo_push_group() was called.",
74 "group, path", /* keywords */
75 NULL, /* requirements */