Grcov report - clip-fill-rule-pixel-aligned.c

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/*

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 * Copyright © 2004 Red Hat, Inc.

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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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 * 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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 * Author: Carl D. Worth <cworth@cworth.org>

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*/

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#include "cairo-test.h"

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#define PAD 1

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#define SIZE 5

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static void

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pixel_aligned_path (cairo_t *cr)

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    cairo_save (cr);

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	cairo_scale (cr, SIZE, SIZE);

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	cairo_move_to     (cr,  1,  0);

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	cairo_rel_line_to (cr,  1,  0);

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	cairo_rel_line_to (cr,  0,  3);

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	cairo_rel_line_to (cr,  1,  0);

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	cairo_rel_line_to (cr,  0, -1);

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	cairo_rel_line_to (cr, -3,  0);

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	cairo_rel_line_to (cr,  0, -1);

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	cairo_rel_line_to (cr,  4,  0);

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	cairo_rel_line_to (cr,  0,  3);

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	cairo_rel_line_to (cr, -3,  0);

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	cairo_rel_line_to (cr,  0, -4);

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	cairo_close_path (cr);

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    cairo_restore (cr);

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/* Use clipping to draw the same path twice, once with each fill rule */

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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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    cairo_set_source_rgb (cr, 1, 0, 0); /* red */

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    cairo_translate (cr, PAD, PAD);

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    cairo_save (cr);

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	pixel_aligned_path (cr);

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	cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);

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	cairo_clip (cr);

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	cairo_paint (cr);

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    cairo_restore (cr);

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    cairo_translate (cr, SIZE*4 + PAD, 0);

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    cairo_save (cr);

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	pixel_aligned_path (cr);

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	cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);

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	cairo_clip (cr);

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	cairo_paint (cr);

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    cairo_restore (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (clip_fill_rule_pixel_aligned,

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	    "Tests interaction of clipping and cairo_set_fill_rule with a pixel-aligned path",

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	    "clip", /* keywords */

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	    NULL, /* requirements */

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	    PAD + (SIZE*4) + PAD + (SIZE*4) + PAD,

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	    PAD + (SIZE*4) + PAD,

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	    NULL, draw)