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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 Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#define WIDTH 2
#define HEIGHT 2
static cairo_status_t
read_png_from_file (void *closure, unsigned char *data, unsigned int length)
{
FILE *file = closure;
size_t bytes_read;
bytes_read = fread (data, 1, length, file);
if (bytes_read != length)
return CAIRO_STATUS_READ_ERROR;
return CAIRO_STATUS_SUCCESS;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
char *filename;
FILE *file;
cairo_surface_t *surface;
cairo_status_t status;
xasprintf (&filename, "%s/reference/%s", ctx->srcdir,
"create-from-png-stream.ref.png");
file = fopen (filename, "rb");
if (file == NULL) {
cairo_test_status_t ret;
ret = CAIRO_TEST_FAILURE;
if (errno == ENOMEM)
ret = cairo_test_status_from_status (ctx, CAIRO_STATUS_NO_MEMORY);
if (ret != CAIRO_TEST_NO_MEMORY)
cairo_test_log (ctx, "Error: failed to open file: %s\n", filename);
free (filename);
return ret;
}
surface = cairo_image_surface_create_from_png_stream (read_png_from_file,
file);
fclose (file);
status = cairo_surface_status (surface);
if (status) {
cairo_test_status_t ret;
cairo_surface_destroy (surface);
ret = cairo_test_status_from_status (ctx, status);
if (ret != CAIRO_TEST_NO_MEMORY) {
cairo_test_log (ctx,
"Error: failed to create surface from PNG: %s - %s\n",
filename,
cairo_status_to_string (status));
}
free (filename);
return ret;
}
free (filename);
/* Pretend we modify the surface data (which detaches the PNG mime data) */
cairo_surface_flush (surface);
cairo_surface_mark_dirty (surface);
cairo_set_source_surface (cr, surface, 0, 0);
cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST);
cairo_paint (cr);
cairo_surface_destroy (surface);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (create_from_png_stream,
"Tests the creation of an image surface from a PNG using a FILE *",
"png", /* keywords */
NULL, /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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