forked from KolibriOS/kolibrios
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2011 Intel Corporation.
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*
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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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*
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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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*
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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.og/MPL/
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*
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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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*
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* Contributor(s):
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* Robert Bragg <robert@linux.intel.com>
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*/
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#include "cairoint.h"
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#include "cairo-cogl-utils-private.h"
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#include <cogl/cogl.h>
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#include <glib.h>
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static cairo_status_t
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_cogl_move_to (void *closure,
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const cairo_point_t *point)
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{
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cogl_path_move_to (closure,
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_cairo_cogl_util_fixed_to_float (point->x),
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_cairo_cogl_util_fixed_to_float (point->y));
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_cogl_line_to (void *closure,
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const cairo_point_t *point)
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{
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cogl_path_line_to (closure,
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_cairo_cogl_util_fixed_to_float (point->x),
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_cairo_cogl_util_fixed_to_float (point->y));
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_cogl_curve_to (void *closure,
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const cairo_point_t *p0,
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const cairo_point_t *p1,
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const cairo_point_t *p2)
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{
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cogl_path_curve_to (closure,
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_cairo_cogl_util_fixed_to_float (p0->x),
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_cairo_cogl_util_fixed_to_float (p0->y),
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_cairo_cogl_util_fixed_to_float (p1->x),
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_cairo_cogl_util_fixed_to_float (p1->y),
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_cairo_cogl_util_fixed_to_float (p2->x),
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_cairo_cogl_util_fixed_to_float (p2->y));
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return CAIRO_STATUS_SUCCESS;
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}
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static cairo_status_t
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_cogl_close_path (void *closure)
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{
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cogl_path_close (closure);
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return CAIRO_STATUS_SUCCESS;
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}
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CoglPath *
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_cairo_cogl_util_path_from_cairo (const cairo_path_fixed_t *path,
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cairo_fill_rule_t fill_rule,
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float tolerance)
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{
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CoglPath *cogl_path = cogl_path_new ();
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cairo_status_t status;
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if (fill_rule == CAIRO_FILL_RULE_EVEN_ODD)
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cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_EVEN_ODD);
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else
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cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_NON_ZERO);
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#ifdef USE_CAIRO_PATH_FLATTENER
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/* XXX: rely on cairo to do path flattening, since it seems Cogl's
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* curve_to flattening is much slower */
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status = _cairo_path_fixed_interpret_flat (path,
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_cogl_move_to,
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_cogl_line_to,
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_cogl_close_path,
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cogl_path,
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tolerance);
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#else
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status = _cairo_path_fixed_interpret (path,
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_cogl_move_to,
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_cogl_line_to,
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_cogl_curve_to,
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_cogl_close_path,
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cogl_path);
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#endif
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assert (status == CAIRO_STATUS_SUCCESS);
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return cogl_path;
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}
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int
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_cairo_cogl_util_next_p2 (int a)
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{
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int rval = 1;
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while (rval < a)
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rval <<= 1;
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return rval;
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}
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