Grcov report - clip-nesting.c

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/*

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 * Copyright © 2005 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: Owen Taylor <otaylor@redhat.com>

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*/

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#include "cairo-test.h"

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#include <math.h>

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#include <stdio.h>

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#define SIZE 100

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#define BORDER 10

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#define LINE_WIDTH 20

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static void

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_propagate_status (cairo_t *dst, cairo_t *src)

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    cairo_path_t path;

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    path.status = cairo_status (src);

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    if (path.status) {

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	path.num_data = 0;

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	path.data = NULL;

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	cairo_append_path (dst, &path);

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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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    cairo_surface_t *target_surface;

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    cairo_t *cr2, *cr3;

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3

    target_surface = cairo_get_group_target (cr);

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3

    cr2 = cairo_create (target_surface);

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    /* Draw a diagonal line and clip to it */

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3

    cairo_move_to (cr2, BORDER,                     BORDER);

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3

    cairo_line_to (cr2, BORDER + LINE_WIDTH,        BORDER);

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3

    cairo_line_to (cr2, SIZE - BORDER,              SIZE - BORDER);

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3

    cairo_line_to (cr2, SIZE - BORDER - LINE_WIDTH, SIZE - BORDER);

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3

    cairo_clip (cr2);

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3

    cairo_set_source_rgb (cr2, 0, 0, 1); /* Blue */

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3

    cairo_paint (cr2);

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    /* Clipping affects this cairo_t */

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3

    cairo_set_source_rgb (cr2, 1, 1, 1); /* White */

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3

    cairo_rectangle (cr2,

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		     SIZE / 2 - LINE_WIDTH / 2, BORDER,

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		     LINE_WIDTH,                SIZE - 2 * BORDER);

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3

    cairo_fill (cr2);

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    /* But doesn't affect another cairo_t that we create temporarily for

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     * the same surface

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*/

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    cr3 = cairo_create (target_surface);

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3

    cairo_set_source_rgb (cr3, 1, 1, 1); /* White */

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3

    cairo_rectangle (cr3,

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		     SIZE - BORDER - LINE_WIDTH, BORDER,

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		     LINE_WIDTH,                 SIZE - 2 * BORDER);

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3

    cairo_fill (cr3);

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3

    _propagate_status (cr, cr3);

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3

    cairo_destroy (cr3);

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3

    _propagate_status (cr, cr2);

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3

    cairo_destroy (cr2);

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    /* And doesn't affect anything after this cairo_t is destroyed */

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3

    cairo_set_source_rgb (cr, 1, 1, 1); /* White */

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3

    cairo_rectangle (cr,

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		     BORDER,     BORDER,

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		     LINE_WIDTH, SIZE - 2 * BORDER);

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    cairo_fill (cr);

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3

    return CAIRO_TEST_SUCCESS;

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1

CAIRO_TEST (clip_nesting,

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	    "Test clipping with multiple contexts for the same surface",

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	    "clip", /* keywords */

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	    NULL, /* requirements */

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	    SIZE, SIZE,

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	    NULL, draw)