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/*
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 * Copyright © 2008 Red Hat, Inc.
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 *
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 * Permission is hereby granted, free of charge, to any person
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 * obtaining a copy of this software and associated documentation
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 * files (the "Software"), to deal in the Software without
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 * restriction, including without limitation the rights to use, copy,
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 * modify, merge, publish, distribute, sublicense, and/or sell copies
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 * of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 *
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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 LINE_WIDTH  10

            

        

            

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#define PAD	    2

            

        

            

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#define WIDTH	    (PAD + LINE_WIDTH + PAD)

            

        

            

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#define HEIGHT	    (WIDTH)

            

        

            

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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_translate (cr, PAD, PAD);

            

        

            

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    /* Paint background white, then draw in black. */

            

        

            

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    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */

            

        

            

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    cairo_paint (cr);

            

        

            

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    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */

            

        

            

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    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);

            

        

            

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    cairo_set_line_width (cr, LINE_WIDTH);

            

        

            

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    /* The default miter limit value of 10.0 guarantees that

            

        

            

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     * right-angle turns, (in fact, any angle greater than 11

            

        

            

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     * degrees), gets a miter rather than a bevel join. The

            

        

            

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     * rectilinear stroke optimization was originally written in a

            

        

            

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     * buggy way that did not respect the miter limit, (that is,

            

        

            

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     * inappropriately drawing miter joins when the miter limit would

            

        

            

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     * turn them into bevels). So we draw here with a miter limit of

            

        

            

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     * 1.0 to force all miter joins into bevels. */

            

        

            

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    cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);

            

        

            

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    cairo_set_miter_limit (cr, 1.0);

            

        

            

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    cairo_move_to (cr, LINE_WIDTH / 2.0, LINE_WIDTH);

            

        

            

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    cairo_rel_line_to (cr, 0, - LINE_WIDTH / 2.0);

            

        

            

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    cairo_rel_line_to (cr, LINE_WIDTH / 2.0, 0);

            

        

            

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    cairo_stroke (cr);

            

        

            

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    return CAIRO_TEST_SUCCESS;

            

        

            

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}

            

        

            

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CAIRO_TEST (rectilinear_miter_limit,

            

        

            

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	    "Test that the rectilinear stroke optimization doesn't break cairo_set_miter_limit",

            

        

            

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	    "miter, stroke, stress", /* keywords */

            

        

            

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	    NULL, /* requirements */

            

        

            

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	    WIDTH, HEIGHT,

            

        

            

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	    NULL, draw)