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/*
* Copyright © Jeff Muizelaar
*
* 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.
*
* JEFF MUIZELAAR 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.
*
* Authors: Jeff Muizelaar <jeff@infidigm.net>
* Carl Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#define MASK_WIDTH 8
#define MASK_HEIGHT 8
static unsigned char mask[MASK_WIDTH * MASK_HEIGHT] = {
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
0x0, 0x0, 0xff, 0x0, 0xff, 0x0, 0x0, 0x0,
};
static cairo_test_status_t
check_status (const cairo_test_context_t *ctx,
cairo_status_t status,
cairo_status_t expected)
{
if (status == expected)
return CAIRO_TEST_SUCCESS;
cairo_test_log (ctx,
"Error: Expected status value %d (%s), received %d (%s)\n",
expected,
cairo_status_to_string (expected),
status,
cairo_status_to_string (status));
return CAIRO_TEST_FAILURE;
}
static cairo_test_status_t
test_surface_with_width_and_stride (const cairo_test_context_t *ctx,
int width, int stride,
cairo_status_t expected)
{
cairo_test_status_t status;
cairo_surface_t *surface;
cairo_t *cr;
int len;
unsigned char *data;
cairo_test_log (ctx,
"Creating surface with width %d and stride %d\n",
width, stride);
len = stride;
if (len < 0)
len = -len;
data = xmalloc (len);
surface = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_A8,
width, 1, stride);
cr = cairo_create (surface);
cairo_paint (cr);
status = check_status (ctx, cairo_surface_status (surface), expected);
if (status)
goto BAIL;
status = check_status (ctx, cairo_status (cr), expected);
if (status)
goto BAIL;
BAIL:
cairo_destroy (cr);
cairo_surface_destroy (surface);
free (data);
return status;
}
static cairo_test_status_t
draw (cairo_t *cr, int dst_width, int dst_height)
{
int stride, row;
unsigned char *src, *dst, *mask_aligned;
cairo_surface_t *surface;
/* Now test actually drawing through our mask data, allocating and
* copying with the proper stride. */
stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8,
MASK_WIDTH);
mask_aligned = xmalloc (stride * MASK_HEIGHT);
src = mask;
dst = mask_aligned;
for (row = 0; row < MASK_HEIGHT; row++) {
memcpy (dst, src, MASK_WIDTH);
src += MASK_WIDTH;
dst += stride;
}
surface = cairo_image_surface_create_for_data (mask_aligned,
CAIRO_FORMAT_A8,
MASK_WIDTH,
MASK_HEIGHT,
stride);
/* Paint background blue */
cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
cairo_paint (cr);
/* Then paint red through our mask */
cairo_set_source_rgb (cr, 1, 0, 0); /* red */
cairo_mask_surface (cr, surface, 0, 0);
cairo_surface_destroy (surface);
free (mask_aligned);
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
preamble (cairo_test_context_t *ctx)
{
cairo_test_status_t status = CAIRO_TEST_SUCCESS;
int test_width;
for (test_width = 0; test_width < 40; test_width++) {
int stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8,
test_width);
cairo_status_t expected;
/* First create a surface using the width as the stride,
* (most of these should fail).
*/
expected = (stride == test_width) ?
CAIRO_STATUS_SUCCESS : CAIRO_STATUS_INVALID_STRIDE;
status = test_surface_with_width_and_stride (ctx,
test_width,
test_width,
expected);
if (status)
return status;
status = test_surface_with_width_and_stride (ctx,
test_width,
-test_width,
expected);
if (status)
return status;
/* Then create a surface using the correct stride,
* (should always succeed).
*/
status = test_surface_with_width_and_stride (ctx,
test_width,
stride,
CAIRO_STATUS_SUCCESS);
if (status)
return status;
status = test_surface_with_width_and_stride (ctx,
test_width,
-stride,
CAIRO_STATUS_SUCCESS);
if (status)
return status;
}
return status;
}
CAIRO_TEST (a8_mask,
"test masks of CAIRO_FORMAT_A8",
"alpha, mask", /* keywords */
NULL, /* requirements */
8, 8,
preamble, draw)
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