Grcov report - bug-361.c

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/*

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 * Copyright © 2019 Uli Schlachter

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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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 * 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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 * 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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#include "cairo-test.h"

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/* This is basically gears.shape.arrow */

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static void

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3

shape (cairo_t *cr, double width, double height)

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3

    double shaft_length = height / 2;

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3

    double shaft_width = width / 2;

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3

    double head_width = width;

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3

    double head_length = height - shaft_length;

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3

    cairo_move_to (cr, width / 2, 0);

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3

    cairo_rel_line_to (cr, head_width / 2, head_length);

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3

    cairo_rel_line_to (cr, -(head_width - shaft_width) / 2, 0);

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3

    cairo_rel_line_to (cr, 0, shaft_length);

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3

    cairo_rel_line_to (cr, -shaft_width, 0);

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3

    cairo_rel_line_to (cr, 0, -shaft_length);

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    cairo_rel_line_to (cr, -(head_width - shaft_width) / 2, 0);

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3

    cairo_close_path (cr);

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3

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/* This is basically the drawing routine of wibox.container.background */

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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

    double bw = 1.5;

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    cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);

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    /* Draw background */

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    cairo_set_source_rgb (cr, 0, 0, 1);

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    cairo_paint (cr);

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    /* Create shape */

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    cairo_translate (cr, bw, bw);

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    shape (cr, width - 2 * bw, height - 2 * bw);

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    cairo_translate (cr, -bw, -bw);

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    /* Now do the border */

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    cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);

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    /* Mark everything as "is border" */

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    cairo_set_source_rgba (cr, 0, 0, 0, 1);

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3

    cairo_paint (cr);

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    /* Remove inside of the shape */

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    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);

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    cairo_set_source_rgba (cr, 0, 0, 0, 0);

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    cairo_fill_preserve (cr);

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    cairo_pattern_t *mask = cairo_pop_group (cr);

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    /* Now actually draw the border via the mask */

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);

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    cairo_mask (cr, mask);

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    cairo_pattern_destroy (mask);

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    /* We now have the right content in a temporary surface. Copy it to the

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     * target surface. Needs another mask.

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*/

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    cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);

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    cairo_set_line_width (cr, 2 * bw);

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    cairo_set_source_rgba (cr, 0, 0, 0, 1);

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    cairo_stroke_preserve (cr);

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    cairo_fill (cr);

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    mask = cairo_pop_group (cr);

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    cairo_pop_group_to_source (cr);

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    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);

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    cairo_mask (cr, mask);

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    cairo_pattern_destroy (mask);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (bug_361,

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	    "Bug 361 (Problem with SVG backend and masks)",

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	    "mask, operator", /* keywords */

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	    NULL, /* requirements */

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	    100, 100,

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	    NULL, draw)