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/*
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 * Copyright © 2005 Red Hat, Inc.
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 *
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 * Permission to use, copy, modify, distribute, and sell this software
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 * and its documentation for any purpose is hereby granted without
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 * fee, provided that the above copyright notice appear in all copies
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 * and that both that copyright notice and this permission notice
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 * appear in supporting documentation, and that the name of
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 * Red Hat, Inc. not be used in advertising or publicity pertaining to
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 * distribution of the software without specific, written prior
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 * permission. Red Hat, Inc. makes no representations about the
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 * suitability of this software for any purpose.  It is provided "as
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 * is" without express or implied warranty.
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 *
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 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 *
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 * Author: Owen Taylor <otaylor@redhat.com>
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 */
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#include "cairo-test.h"

            

        

            

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#include <math.h>

            

        

            

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#include <stdio.h>

            

        

            

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#define SIZE 40

            

        

            

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static cairo_test_status_t

            

        

            

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draw (cairo_t *cr, int width, int height)

            

        

            

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{

            

        

            

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    cairo_pattern_t *pattern;

            

        

            

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    cairo_matrix_t matrix;

            

        

            

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    /* Paint a diagonal division as a test image */

            

        

            

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    cairo_set_source_rgb (cr, 1, 1, 1);	/* White */

            

        

            

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    cairo_paint (cr);

            

        

            

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    cairo_move_to (cr, SIZE,    0);

            

        

            

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    cairo_line_to (cr, SIZE, SIZE);

            

        

            

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    cairo_line_to (cr, 0,    SIZE);

            

        

            

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    cairo_set_source_rgb (cr, 0, 0, 0);

            

        

            

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    cairo_fill (cr);

            

        

            

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    /* Create a pattern with the target surface as the source,

            

        

            

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     * offset by SIZE/2

            

        

            

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     */

            

        

            

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    pattern = cairo_pattern_create_for_surface (cairo_get_group_target (cr));

            

        

            

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    cairo_matrix_init_translate (&matrix, - SIZE / 2, - SIZE / 2);

            

        

            

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    cairo_pattern_set_matrix (pattern, &matrix);

            

        

            

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    cairo_set_source (cr, pattern);

            

        

            

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    cairo_pattern_destroy (pattern);

            

        

            

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    /* Copy two rectangles from the upper-left quarter of the image to

            

        

            

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     * the lower right.  It will work if we use cairo_fill(), but the

            

        

            

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     * cairo_clip() cairo_paint() combination fails because the clip

            

        

            

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     * on the surface as a destination affects it as the source as

            

        

            

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     * well.

            

        

            

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     */

            

        

            

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    cairo_rectangle (cr,

            

        

            

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		     2 * SIZE / 4, 2 * SIZE / 4,

            

        

            

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		     SIZE / 4,     SIZE / 4);

            

        

            

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    cairo_rectangle (cr,

            

        

            

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		     3 * SIZE / 4, 3 * SIZE / 4,

            

        

            

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		     SIZE / 4,     SIZE / 4);

            

        

            

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    cairo_clip (cr);

            

        

            

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    cairo_paint (cr);

            

        

            

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    return CAIRO_TEST_SUCCESS;

            

        

            

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}

            

        

            

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                1
            

            

                
CAIRO_TEST (self_copy,

            

        

            

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	    "Test copying from a surface to itself with a clip",

            

        

            

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	    "paint", /* keywords */

            

        

            

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	    NULL, /* requirements */

            

        

            

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	    SIZE, SIZE,

            

        

            

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	    NULL, draw)