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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>
*/
#include "cairo-test.h"
#define N_OPERATORS (CAIRO_OPERATOR_SATURATE + 1)
#define SIZE 10
#define PAD 3
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
unsigned int n;
cairo_translate (cr, PAD, PAD);
for (n = 0; n < N_OPERATORS; n++) {
cairo_reset_clip (cr);
cairo_rectangle (cr, 0, 0, SIZE, SIZE);
cairo_clip (cr);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_rectangle (cr, 0, 0, SIZE-PAD, SIZE-PAD);
cairo_fill (cr);
cairo_set_source_rgba (cr, 0, 0, 1, .33);
cairo_set_operator (cr, n);
cairo_rectangle (cr, PAD, PAD, SIZE-PAD, SIZE-PAD);
cairo_fill (cr);
cairo_translate (cr, SIZE+PAD, 0);
}
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (operator_alpha,
"Tests using set_operator() with an non-opaque source",
"operator, alpha", /* keywords */
NULL, /* requirements */
(SIZE+PAD) * N_OPERATORS + PAD, SIZE + 2*PAD,
NULL, draw)
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