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/*
* 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 D. Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#include <stdlib.h>
static void
scale_by_two (double *x, double *y)
{
*x = *x * 2.0;
*y = *y * 2.0;
}
typedef void (*munge_func_t) (double *x, double *y);
static void
munge_and_set_path (cairo_t *cr,
cairo_path_t *path,
munge_func_t munge)
{
int i;
cairo_path_data_t *p;
double x1, y1, x2, y2, x3, y3;
if (path->status) {
cairo_append_path (cr, path);
return;
}
for (i=0; i < path->num_data; i += path->data[i].header.length) {
p = &path->data[i];
switch (p->header.type) {
case CAIRO_PATH_MOVE_TO:
x1 = p[1].point.x; y1 = p[1].point.y;
(munge) (&x1, &y1);
cairo_move_to (cr, x1, y1);
break;
case CAIRO_PATH_LINE_TO:
x1 = p[1].point.x; y1 = p[1].point.y;
(munge) (&x1, &y1);
cairo_line_to (cr, x1, y1);
break;
case CAIRO_PATH_CURVE_TO:
x1 = p[1].point.x; y1 = p[1].point.y;
x2 = p[2].point.x; y2 = p[2].point.y;
x3 = p[3].point.x; y3 = p[3].point.y;
(munge) (&x1, &y1);
(munge) (&x2, &y2);
(munge) (&x3, &y3);
cairo_curve_to (cr,
x1, y1,
x2, y2,
x3, y3);
break;
case CAIRO_PATH_CLOSE_PATH:
cairo_close_path (cr);
break;
}
}
}
static void
make_path (cairo_t *cr)
{
cairo_rectangle (cr, 0, 0, 5, 5);
cairo_move_to (cr, 15, 2.5);
cairo_arc (cr, 12.5, 2.5, 2.5, 0, 2 * M_PI);
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_path_t *path;
cairo_t *cr_error;
/* Ensure that calling cairo_copy_path on an in-error cairo_t will
* propagate the error. */
cr_error = cairo_create (NULL);
path = cairo_copy_path (cr_error);
if (path->status != CAIRO_STATUS_NULL_POINTER) {
cairo_test_log (ctx,
"Error: cairo_copy_path returned status of %s rather than propagating %s\n",
cairo_status_to_string (path->status),
cairo_status_to_string (CAIRO_STATUS_NULL_POINTER));
cairo_path_destroy (path);
cairo_destroy (cr_error);
return CAIRO_TEST_FAILURE;
}
cairo_path_destroy (path);
path = cairo_copy_path_flat (cr_error);
if (path->status != CAIRO_STATUS_NULL_POINTER) {
cairo_test_log (ctx,
"Error: cairo_copy_path_flat returned status of %s rather than propagating %s\n",
cairo_status_to_string (path->status),
cairo_status_to_string (CAIRO_STATUS_NULL_POINTER));
cairo_path_destroy (path);
cairo_destroy (cr_error);
return CAIRO_TEST_FAILURE;
}
cairo_path_destroy (path);
cairo_destroy (cr_error);
/* first check that we can copy an empty path */
cairo_new_path (cr);
path = cairo_copy_path (cr);
if (path->status != CAIRO_STATUS_SUCCESS) {
cairo_status_t status = path->status;
cairo_test_log (ctx,
"Error: cairo_copy_path returned status of %s\n",
cairo_status_to_string (status));
cairo_path_destroy (path);
return cairo_test_status_from_status (ctx, status);
}
if (path->num_data != 0) {
cairo_test_log (ctx,
"Error: cairo_copy_path did not copy an empty path, returned path contains %d elements\n",
path->num_data);
cairo_path_destroy (path);
return CAIRO_TEST_FAILURE;
}
cairo_append_path (cr, path);
cairo_path_destroy (path);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) {
cairo_test_log (ctx,
"Error: cairo_append_path failed with a copy of an empty path, returned status of %s\n",
cairo_status_to_string (cairo_status (cr)));
return cairo_test_status_from_status (ctx, cairo_status (cr));
}
/* We draw in the default black, so paint white first. */
cairo_save (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_restore (cr);
/* copy path, munge, and fill */
cairo_translate (cr, 5, 5);
make_path (cr);
path = cairo_copy_path (cr);
cairo_new_path (cr);
munge_and_set_path (cr, path, scale_by_two);
cairo_path_destroy (path);
cairo_fill (cr);
/* copy flattened path, munge, and fill */
cairo_translate (cr, 0, 15);
make_path (cr);
path = cairo_copy_path_flat (cr);
cairo_new_path (cr);
munge_and_set_path (cr, path, scale_by_two);
cairo_path_destroy (path);
cairo_fill (cr);
/* append two copies of path, and fill */
cairo_translate (cr, 0, 15);
cairo_scale (cr, 2.0, 2.0);
make_path (cr);
path = cairo_copy_path (cr);
cairo_new_path (cr);
cairo_append_path (cr, path);
cairo_translate (cr, 2.5, 2.5);
cairo_append_path (cr, path);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill (cr);
cairo_path_destroy (path);
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
preamble (cairo_test_context_t *ctx)
{
cairo_t *cr;
cairo_path_data_t data;
cairo_path_t path;
cairo_surface_t *surface;
cairo_status_t status;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
status = cairo_surface_status (surface);
if (status) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
/* Test a few error cases for cairo_append_path_data */
#define CAIRO_CREATE() do {\
cr = cairo_create (surface); \
status = cairo_status (cr); \
if (status) { \
cairo_destroy (cr); \
cairo_surface_destroy (surface); \
return cairo_test_status_from_status (ctx, status); \
} \
} while (0)
CAIRO_CREATE ();
cairo_append_path (cr, NULL);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NULL_POINTER) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.status = -1;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_INVALID_STATUS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.status = CAIRO_STATUS_NO_MEMORY;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NO_MEMORY) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.data = NULL;
path.num_data = 0;
path.status = CAIRO_STATUS_SUCCESS;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.data = NULL;
path.num_data = 1;
path.status = CAIRO_STATUS_SUCCESS;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NULL_POINTER) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
/* Intentionally insert bogus header.length value (otherwise would be 2) */
data.header.type = CAIRO_PATH_MOVE_TO;
data.header.length = 1;
path.data = &data;
path.num_data = 1;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_INVALID_PATH_DATA) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
/* And test the degnerate case */
CAIRO_CREATE ();
path.num_data = 0;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
cairo_surface_destroy (surface);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (copy_path,
"Tests calls to path_data functions: cairo_copy_path, cairo_copy_path_flat, and cairo_append_path",
"path", /* keywords */
NULL, /* requirements */
45, 53,
preamble, draw)