Grcov report - push-group-path-offset.c

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/*

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 * Copyright 2010 Red Hat Inc.

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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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 * Author: Benjamin Otte <otte@gnome.org>

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*/

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#include "cairo-test.h"

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#define CLIP_OFFSET 15

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#define CLIP_SIZE 20

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#define WIDTH 50

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#define HEIGHT 50

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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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    /* Neutral gray background */

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3

    cairo_set_source_rgb (cr, 0.51613, 0.55555, 0.51613);

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    cairo_paint (cr);

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    /* the rest uses CAIRO_OPERATOR_SOURCE so we see better when something goes wrong */

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    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);

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    /* add a rectangle */

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    cairo_rectangle (cr, CLIP_OFFSET, CLIP_OFFSET, CLIP_SIZE, CLIP_SIZE);

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    /* clip to the rectangle */

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    cairo_clip_preserve (cr);

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    /* push a group. We now have a device offset. */

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    cairo_push_group (cr);

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    /* push a group again. This is where the bug used to happen. */

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    cairo_push_group (cr);

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    /* draw something */

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    cairo_fill_preserve (cr);

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    /* make sure the stuff we drew ends up on the output */

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    cairo_pop_group_to_source (cr);

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    cairo_fill_preserve (cr);

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    cairo_pop_group_to_source (cr);

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    cairo_fill_preserve (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (push_group_path_offset,

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	    "Exercises a bug in Cairo 1.9 where existing paths applied the target's"

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            " device offset twice when cairo_push_group() was called.",

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	    "group, path", /* keywords */

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	    NULL, /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, draw)