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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* cairo - a vector graphics library with display and print output |
| 2 | * |
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| 3 | * Copyright © 2011 Intel Corporation. |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it either under the terms of the GNU Lesser General Public |
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| 7 | * License version 2.1 as published by the Free Software Foundation |
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| 8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
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| 9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
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| 10 | * notice, a recipient may use your version of this file under either |
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| 11 | * the MPL or the LGPL. |
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| 12 | * |
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| 13 | * You should have received a copy of the LGPL along with this library |
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| 14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
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| 16 | * You should have received a copy of the MPL along with this library |
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| 17 | * in the file COPYING-MPL-1.1 |
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| 18 | * |
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| 19 | * The contents of this file are subject to the Mozilla Public License |
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| 20 | * Version 1.1 (the "License"); you may not use this file except in |
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| 21 | * compliance with the License. You may obtain a copy of the License at |
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| 22 | * http://www.mozilla.og/MPL/ |
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| 23 | * |
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| 24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
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| 25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
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| 26 | * the specific language governing rights and limitations. |
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| 27 | * |
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| 28 | * Contributor(s): |
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| 29 | * Robert Bragg |
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| 30 | */ |
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| 31 | |||
| 32 | #include "cairoint.h" |
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| 33 | #include "cairo-cogl-utils-private.h" |
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| 34 | |||
| 35 | #include |
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| 36 | #include |
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| 37 | |||
| 38 | static cairo_status_t |
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| 39 | _cogl_move_to (void *closure, |
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| 40 | const cairo_point_t *point) |
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| 41 | { |
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| 42 | cogl_path_move_to (closure, |
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| 43 | _cairo_cogl_util_fixed_to_float (point->x), |
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| 44 | _cairo_cogl_util_fixed_to_float (point->y)); |
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| 45 | return CAIRO_STATUS_SUCCESS; |
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| 46 | } |
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| 47 | |||
| 48 | static cairo_status_t |
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| 49 | _cogl_line_to (void *closure, |
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| 50 | const cairo_point_t *point) |
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| 51 | { |
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| 52 | cogl_path_line_to (closure, |
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| 53 | _cairo_cogl_util_fixed_to_float (point->x), |
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| 54 | _cairo_cogl_util_fixed_to_float (point->y)); |
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| 55 | return CAIRO_STATUS_SUCCESS; |
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| 56 | } |
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| 57 | |||
| 58 | static cairo_status_t |
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| 59 | _cogl_curve_to (void *closure, |
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| 60 | const cairo_point_t *p0, |
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| 61 | const cairo_point_t *p1, |
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| 62 | const cairo_point_t *p2) |
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| 63 | { |
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| 64 | cogl_path_curve_to (closure, |
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| 65 | _cairo_cogl_util_fixed_to_float (p0->x), |
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| 66 | _cairo_cogl_util_fixed_to_float (p0->y), |
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| 67 | _cairo_cogl_util_fixed_to_float (p1->x), |
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| 68 | _cairo_cogl_util_fixed_to_float (p1->y), |
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| 69 | _cairo_cogl_util_fixed_to_float (p2->x), |
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| 70 | _cairo_cogl_util_fixed_to_float (p2->y)); |
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| 71 | return CAIRO_STATUS_SUCCESS; |
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| 72 | } |
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| 73 | |||
| 74 | static cairo_status_t |
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| 75 | _cogl_close_path (void *closure) |
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| 76 | { |
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| 77 | cogl_path_close (closure); |
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| 78 | return CAIRO_STATUS_SUCCESS; |
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| 79 | } |
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| 80 | |||
| 81 | CoglPath * |
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| 82 | _cairo_cogl_util_path_from_cairo (const cairo_path_fixed_t *path, |
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| 83 | cairo_fill_rule_t fill_rule, |
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| 84 | float tolerance) |
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| 85 | { |
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| 86 | CoglPath *cogl_path = cogl_path_new (); |
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| 87 | cairo_status_t status; |
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| 88 | |||
| 89 | if (fill_rule == CAIRO_FILL_RULE_EVEN_ODD) |
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| 90 | cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_EVEN_ODD); |
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| 91 | else |
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| 92 | cogl_path_set_fill_rule (cogl_path, COGL_PATH_FILL_RULE_NON_ZERO); |
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| 93 | |||
| 94 | #ifdef USE_CAIRO_PATH_FLATTENER |
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| 95 | /* XXX: rely on cairo to do path flattening, since it seems Cogl's |
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| 96 | * curve_to flattening is much slower */ |
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| 97 | status = _cairo_path_fixed_interpret_flat (path, |
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| 98 | _cogl_move_to, |
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| 99 | _cogl_line_to, |
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| 100 | _cogl_close_path, |
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| 101 | cogl_path, |
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| 102 | tolerance); |
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| 103 | #else |
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| 104 | status = _cairo_path_fixed_interpret (path, |
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| 105 | _cogl_move_to, |
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| 106 | _cogl_line_to, |
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| 107 | _cogl_curve_to, |
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| 108 | _cogl_close_path, |
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| 109 | cogl_path); |
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| 110 | #endif |
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| 111 | |||
| 112 | assert (status == CAIRO_STATUS_SUCCESS); |
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| 113 | return cogl_path; |
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| 114 | } |
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| 115 | |||
| 116 | int |
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| 117 | _cairo_cogl_util_next_p2 (int a) |
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| 118 | { |
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| 119 | int rval = 1; |
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| 120 | |||
| 121 | while (rval < a) |
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| 122 | rval <<= 1; |
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| 123 | |||
| 124 | return rval; |
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| 125 | } |
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| 126 |