Grcov report - leaky-dashed-rectangle.c

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/*

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 * Copyright © 2008 Chris Wilson

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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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 * Chris Wilson 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. Chris Wilson 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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 * CHRIS WILSON 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 CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>

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 *         Franz Schmid <Franz.Schmid@altmuehlnet.de>

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*/

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/* Test case for bug reported by Franz Schmid <Franz.Schmid@altmuehlnet.de>

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 * https://lists.cairographics.org/archives/cairo/2008-April/013912.html

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 * See also: https://bugs.freedesktop.org/show_bug.cgi?id=17177

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*/

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#include "cairo-test.h"

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#define WIDTH 60

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#define HEIGHT 60

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static cairo_test_status_t

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3

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

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3

    const double dash[2] = {4, 2};

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    cairo_set_source_rgb (cr, 1, 1, 1);

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3

    cairo_paint (cr);

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    cairo_set_source_rgb (cr, 0., 0., 0);

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3

    cairo_translate (cr, 0.5, .5);

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3

    cairo_set_line_width (cr, 1); /* This is vital to reproduce the bug. */

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    /* First check simple rectangles */

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3

    cairo_set_source_rgb (cr, 0., 0., 0);

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    cairo_rectangle (cr, -WIDTH/4, -HEIGHT/4, WIDTH, HEIGHT);

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3

    cairo_stroke (cr);

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    cairo_rectangle (cr, WIDTH+WIDTH/4, -HEIGHT/4, -WIDTH, HEIGHT);

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    cairo_stroke (cr);

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    cairo_rectangle (cr, -WIDTH/4, HEIGHT+HEIGHT/4, WIDTH, -HEIGHT);

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    cairo_stroke (cr);

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    cairo_rectangle (cr, WIDTH+WIDTH/4, HEIGHT+HEIGHT/4, -WIDTH, -HEIGHT);

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3

    cairo_stroke (cr);

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3

    cairo_set_dash (cr, dash, 2, 0);

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    /* And now dashed. */

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3

    cairo_set_source_rgb (cr, 1., 0., 0);

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3

    cairo_rectangle (cr, -WIDTH/4, -HEIGHT/4, WIDTH, HEIGHT);

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3

    cairo_stroke (cr);

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3

    cairo_set_source_rgb (cr, 0., 1., 0);

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3

    cairo_rectangle (cr, WIDTH+WIDTH/4, -HEIGHT/4, -WIDTH, HEIGHT);

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3

    cairo_stroke (cr);

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3

    cairo_set_source_rgb (cr, 0., 0., 1);

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    cairo_rectangle (cr, -WIDTH/4, HEIGHT+HEIGHT/4, WIDTH, -HEIGHT);

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    cairo_stroke (cr);

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    cairo_set_source_rgb (cr, 1., 1., 0);

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    cairo_rectangle (cr, WIDTH+WIDTH/4, HEIGHT+HEIGHT/4, -WIDTH, -HEIGHT);

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3

    cairo_stroke (cr);

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3

    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (leaky_dashed_rectangle,

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	    "Exercises bug in which a dashed stroke leaks in from outside the surface",

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	    "dash, stroke", /* keywords */

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	    NULL, /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, draw)