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/*
* Copyright © 2008 Chris Wilson
*
* 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
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
*
* Based on an example by Dirk "krit" Schulze found during WebKit integration.
*/
#include "cairo-test.h"
/* we know that this is an inherent limitation in cairo */
#define FAIL CAIRO_TEST_XFAILURE
/* Test the idempotency of path construction and copying */
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_path_data_t path_data[] = {
{ { CAIRO_PATH_MOVE_TO, 2 }, },
{ { 95.000000, 40.000000 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.960533, 41.255810 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.842293, 42.50666 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.645744, 43.747627 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.371666, 44.973797 }, },
};
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_path_t path, *path_copy;
int i, j, n;
cairo_test_status_t result = CAIRO_TEST_SUCCESS;
path.status = CAIRO_STATUS_SUCCESS;
path.num_data = sizeof (path_data) / sizeof (path_data[0]);
path.data = path_data;
cairo_new_path (cr);
cairo_append_path (cr, &path);
path_copy = cairo_copy_path (cr);
if (path_copy->status)
return cairo_test_status_from_status (ctx, path_copy->status);
for (i = j = n = 0;
i < path.num_data && j < path_copy->num_data;
i += path.data[i].header.length,
j += path_copy->data[j].header.length,
n++)
{
const cairo_path_data_t *src, *dst;
src = &path.data[i];
dst = &path_copy->data[j];
if (src->header.type != dst->header.type) {
cairo_test_log (ctx,
"Paths differ in header type after %d operations.\n"
"Expected path operation %d, found %d.\n",
n, src->header.type, dst->header.type);
result = FAIL;
break;
}
if (memcmp (&src[1].point, &dst[1].point, sizeof (src->point))) {
cairo_test_log (ctx,
"Paths differ in coordinates after %d operations.\n"
"Expected point (%f, %f), found (%f, %f).\n",
n,
src[1].point.x, src[1].point.y,
dst[1].point.x, dst[1].point.y);
result = FAIL;
break;
}
}
cairo_path_destroy (path_copy);
return result;
}
CAIRO_TEST (path_precision,
"Check that the path append/copy is idempotent.",
"api", /* keywords */
NULL, /* requirements */
0, 0,
NULL, draw)
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