Grcov report - cairo-clip-polygon.c

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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */

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/* cairo - a vector graphics library with display and print output

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 * Copyright © 2011 Intel Corporation

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 * This library is free software; you can redistribute it and/or

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 * modify it either under the terms of the GNU Lesser General Public

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 * License version 2.1 as published by the Free Software Foundation

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 * (the "LGPL") or, at your option, under the terms of the Mozilla

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 * Public License Version 1.1 (the "MPL"). If you do not alter this

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 * notice, a recipient may use your version of this file under either

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 * the MPL or the LGPL.

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 * You should have received a copy of the LGPL along with this library

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 * in the file COPYING-LGPL-2.1; if not, write to the Free Software

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 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA

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 * You should have received a copy of the MPL along with this library

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 * in the file COPYING-MPL-1.1

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 * The contents of this file are subject to the Mozilla Public License

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 * Version 1.1 (the "License"); you may not use this file except in

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 * compliance with the License. You may obtain a copy of the License at

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 * http://www.mozilla.org/MPL/

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 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY

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 * OF ANY KIND, either express or implied. See the LGPL or the MPL for

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 * the specific language governing rights and limitations.

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 * The Original Code is the cairo graphics library.

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 * The Initial Developer of the Original Code is University of Southern

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 * California.

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 * Contributor(s):

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

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*/

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#include "cairoint.h"

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#include "cairo-clip-inline.h"

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#include "cairo-clip-private.h"

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#include "cairo-error-private.h"

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#include "cairo-freed-pool-private.h"

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#include "cairo-gstate-private.h"

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#include "cairo-path-fixed-private.h"

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#include "cairo-pattern-private.h"

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#include "cairo-composite-rectangles-private.h"

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#include "cairo-region-private.h"

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static cairo_bool_t

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2757

can_convert_to_polygon (const cairo_clip_t *clip)

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2757

    cairo_clip_path_t *clip_path = clip->path;

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2757

    cairo_antialias_t antialias = clip_path->antialias;

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3036

    while ((clip_path = clip_path->prev) != NULL) {

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	if (clip_path->antialias != antialias)

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	    return FALSE;

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    return TRUE;

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cairo_int_status_t

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2835

_cairo_clip_get_polygon (const cairo_clip_t *clip,

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			 cairo_polygon_t *polygon,

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			 cairo_fill_rule_t *fill_rule,

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			 cairo_antialias_t *antialias)

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    cairo_status_t status;

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    cairo_clip_path_t *clip_path;

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2835

    if (_cairo_clip_is_all_clipped (clip)) {

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	_cairo_polygon_init (polygon, NULL, 0);

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	return CAIRO_INT_STATUS_SUCCESS;

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    /* If there is no clip, we need an infinite polygon */

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2835

    assert (clip && (clip->path || clip->num_boxes));

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2835

    if (clip->path == NULL) {

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	*fill_rule = CAIRO_FILL_RULE_WINDING;

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	*antialias = CAIRO_ANTIALIAS_DEFAULT;

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	return _cairo_polygon_init_box_array (polygon,

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					      clip->boxes,

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					      clip->num_boxes);

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    /* check that residual is all of the same type/tolerance */

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2757

    if (! can_convert_to_polygon (clip))

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	return CAIRO_INT_STATUS_UNSUPPORTED;

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2751

    if (clip->num_boxes < 2)

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2691

	_cairo_polygon_init_with_clip (polygon, clip);

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    else

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	_cairo_polygon_init_with_clip (polygon, NULL);

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2751

    clip_path = clip->path;

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2751

    *fill_rule = clip_path->fill_rule;

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2751

    *antialias = clip_path->antialias;

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2751

    status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,

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						clip_path->tolerance,

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						polygon);

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2751

    if (unlikely (status))

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	goto err;

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2751

    if (clip->num_boxes > 1) {

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	status = _cairo_polygon_intersect_with_boxes (polygon, fill_rule,

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						      clip->boxes, clip->num_boxes);

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	if (unlikely (status))

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	    goto err;

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2751

    polygon->limits = NULL;

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2751

    polygon->num_limits = 0;

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    while ((clip_path = clip_path->prev) != NULL) {

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	cairo_polygon_t next;

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	_cairo_polygon_init (&next, NULL, 0);

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	status = _cairo_path_fixed_fill_to_polygon (&clip_path->path,

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						    clip_path->tolerance,

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						    &next);

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	if (likely (status == CAIRO_STATUS_SUCCESS))

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		status = _cairo_polygon_intersect (polygon, *fill_rule,

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						   &next, clip_path->fill_rule);

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	_cairo_polygon_fini (&next);

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	if (unlikely (status))

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	    goto err;

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	*fill_rule = CAIRO_FILL_RULE_WINDING;

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2751

    return CAIRO_STATUS_SUCCESS;

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err:

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    _cairo_polygon_fini (polygon);

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    return status;

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cairo_bool_t

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_cairo_clip_is_polygon (const cairo_clip_t *clip)

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    if (_cairo_clip_is_all_clipped (clip))

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	return TRUE;

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    /* If there is no clip, we need an infinite polygon */

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    if (clip == NULL)

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	return FALSE;

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    if (clip->path == NULL)

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	return TRUE;

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    /* check that residual is all of the same type/tolerance */

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    return can_convert_to_polygon (clip);

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