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/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2005 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is Red Hat, Inc.
*
* Contributor(s):
* Owen Taylor <otaylor@redhat.com>
* Vladimir Vukicevic <vladimir@pobox.com>
*/
#include "cairoint.h"
void
_cairo_region_init (cairo_region_t *region)
{
pixman_region32_init (®ion->rgn);
}
void
_cairo_region_init_rect (cairo_region_t *region,
cairo_rectangle_int_t *rect)
{
pixman_region32_init_rect (®ion->rgn,
rect->x, rect->y,
rect->width, rect->height);
}
cairo_int_status_t
_cairo_region_init_boxes (cairo_region_t *region,
cairo_box_int_t *boxes,
int count)
{
pixman_box32_t stack_pboxes[CAIRO_STACK_ARRAY_LENGTH (pixman_box32_t)];
pixman_box32_t *pboxes = stack_pboxes;
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
int i;
if (count > ARRAY_LENGTH(stack_pboxes)) {
pboxes = _cairo_malloc_ab (count, sizeof(pixman_box32_t));
if (pboxes == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
for (i = 0; i < count; i++) {
pboxes[i].x1 = boxes[i].p1.x;
pboxes[i].y1 = boxes[i].p1.y;
pboxes[i].x2 = boxes[i].p2.x;
pboxes[i].y2 = boxes[i].p2.y;
}
if (!pixman_region32_init_rects (®ion->rgn, pboxes, count))
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
if (pboxes != stack_pboxes)
free (pboxes);
return status;
}
void
_cairo_region_fini (cairo_region_t *region)
{
pixman_region32_fini (®ion->rgn);
}
cairo_int_status_t
_cairo_region_copy (cairo_region_t *dst, cairo_region_t *src)
{
if (!pixman_region32_copy (&dst->rgn, &src->rgn))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
int
_cairo_region_num_boxes (cairo_region_t *region)
{
return pixman_region32_n_rects (®ion->rgn);
}
cairo_int_status_t
_cairo_region_get_boxes (cairo_region_t *region, int *num_boxes, cairo_box_int_t **boxes)
{
int nboxes;
pixman_box32_t *pboxes;
cairo_box_int_t *cboxes;
int i;
pboxes = pixman_region32_rectangles (®ion->rgn, &nboxes);
if (nboxes == 0) {
*num_boxes = 0;
*boxes = NULL;
return CAIRO_STATUS_SUCCESS;
}
cboxes = _cairo_malloc_ab (nboxes, sizeof(cairo_box_int_t));
if (cboxes == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
for (i = 0; i < nboxes; i++) {
cboxes[i].p1.x = pboxes[i].x1;
cboxes[i].p1.y = pboxes[i].y1;
cboxes[i].p2.x = pboxes[i].x2;
cboxes[i].p2.y = pboxes[i].y2;
}
*num_boxes = nboxes;
*boxes = cboxes;
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_region_boxes_fini (cairo_region_t *region, cairo_box_int_t *boxes)
{
free (boxes);
}
/**
* _cairo_region_get_extents:
* @region: a #cairo_region_t
* @rect: rectangle into which to store the extents
*
* Gets the bounding box of a region as a #cairo_rectangle_int_t
**/
void
_cairo_region_get_extents (cairo_region_t *region, cairo_rectangle_int_t *extents)
{
pixman_box32_t *pextents = pixman_region32_extents (®ion->rgn);
extents->x = pextents->x1;
extents->y = pextents->y1;
extents->width = pextents->x2 - pextents->x1;
extents->height = pextents->y2 - pextents->y1;
}
cairo_int_status_t
_cairo_region_subtract (cairo_region_t *dst, cairo_region_t *a, cairo_region_t *b)
{
if (!pixman_region32_subtract (&dst->rgn, &a->rgn, &b->rgn))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
cairo_int_status_t
_cairo_region_intersect (cairo_region_t *dst, cairo_region_t *a, cairo_region_t *b)
{
if (!pixman_region32_intersect (&dst->rgn, &a->rgn, &b->rgn))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
cairo_int_status_t
_cairo_region_union_rect (cairo_region_t *dst,
cairo_region_t *src,
cairo_rectangle_int_t *rect)
{
if (!pixman_region32_union_rect (&dst->rgn, &src->rgn,
rect->x, rect->y,
rect->width, rect->height))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
return CAIRO_STATUS_SUCCESS;
}
cairo_bool_t
_cairo_region_not_empty (cairo_region_t *region)
{
return (cairo_bool_t) pixman_region32_not_empty (®ion->rgn);
}
void
_cairo_region_translate (cairo_region_t *region,
int x, int y)
{
pixman_region32_translate (®ion->rgn, x, y);
}
pixman_region_overlap_t
_cairo_region_contains_rectangle (cairo_region_t *region,
const cairo_rectangle_int_t *rect)
{
pixman_box32_t pbox;
pbox.x1 = rect->x;
pbox.y1 = rect->y;
pbox.x2 = rect->x + rect->width;
pbox.y2 = rect->y + rect->height;
return pixman_region32_contains_rectangle (®ion->rgn, &pbox);
}
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