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3959 | Serge | 1 | /* cairo - a vector graphics library with display and print output |
2 | * |
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3 | * Copyright © 2002 University of Southern California |
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4 | * Copyright © 2005 Red Hat, Inc. |
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5 | * |
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6 | * This library is free software; you can redistribute it and/or |
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7 | * modify it either under the terms of the GNU Lesser General Public |
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8 | * License version 2.1 as published by the Free Software Foundation |
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9 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
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10 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
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11 | * notice, a recipient may use your version of this file under either |
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12 | * the MPL or the LGPL. |
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13 | * |
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14 | * You should have received a copy of the LGPL along with this library |
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15 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
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16 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
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17 | * You should have received a copy of the MPL along with this library |
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18 | * in the file COPYING-MPL-1.1 |
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19 | * |
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20 | * The contents of this file are subject to the Mozilla Public License |
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21 | * Version 1.1 (the "License"); you may not use this file except in |
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22 | * compliance with the License. You may obtain a copy of the License at |
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23 | * http://www.mozilla.org/MPL/ |
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24 | * |
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25 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
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26 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
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27 | * the specific language governing rights and limitations. |
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28 | * |
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29 | * The Original Code is the cairo graphics library. |
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30 | * |
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31 | * The Initial Developer of the Original Code is University of Southern |
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32 | * California. |
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33 | * |
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34 | * Contributor(s): |
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35 | * Carl D. Worth |
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36 | */ |
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37 | |||
38 | #ifndef CAIRO_TRAPS_PRIVATE_H |
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39 | #define CAIRO_TRAPS_PRIVATE_H |
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40 | |||
41 | #include "cairo-compiler-private.h" |
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42 | #include "cairo-error-private.h" |
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43 | #include "cairo-types-private.h" |
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44 | |||
45 | CAIRO_BEGIN_DECLS |
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46 | |||
47 | struct _cairo_traps { |
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48 | cairo_status_t status; |
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49 | |||
50 | cairo_box_t bounds; |
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51 | const cairo_box_t *limits; |
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52 | int num_limits; |
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53 | |||
54 | unsigned int maybe_region : 1; /* hint: 0 implies that it cannot be */ |
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55 | unsigned int has_intersections : 1; |
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56 | unsigned int is_rectilinear : 1; |
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57 | unsigned int is_rectangular : 1; |
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58 | |||
59 | int num_traps; |
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60 | int traps_size; |
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61 | cairo_trapezoid_t *traps; |
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62 | cairo_trapezoid_t traps_embedded[16]; |
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63 | }; |
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64 | |||
65 | /* cairo-traps.c */ |
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66 | cairo_private void |
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67 | _cairo_traps_init (cairo_traps_t *traps); |
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68 | |||
69 | cairo_private void |
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70 | _cairo_traps_init_with_clip (cairo_traps_t *traps, |
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71 | const cairo_clip_t *clip); |
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72 | |||
73 | cairo_private void |
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74 | _cairo_traps_limit (cairo_traps_t *traps, |
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75 | const cairo_box_t *boxes, |
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76 | int num_boxes); |
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77 | |||
78 | cairo_private cairo_status_t |
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79 | _cairo_traps_init_boxes (cairo_traps_t *traps, |
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80 | const cairo_boxes_t *boxes); |
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81 | |||
82 | cairo_private void |
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83 | _cairo_traps_clear (cairo_traps_t *traps); |
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84 | |||
85 | cairo_private void |
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86 | _cairo_traps_fini (cairo_traps_t *traps); |
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87 | |||
88 | #define _cairo_traps_status(T) (T)->status |
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89 | |||
90 | cairo_private void |
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91 | _cairo_traps_translate (cairo_traps_t *traps, int x, int y); |
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92 | |||
93 | cairo_private void |
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94 | _cairo_traps_tessellate_triangle (cairo_traps_t *traps, |
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95 | const cairo_point_t t[3]); |
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96 | |||
97 | cairo_private void |
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98 | _cairo_traps_tessellate_convex_quad (cairo_traps_t *traps, |
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99 | const cairo_point_t q[4]); |
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100 | |||
101 | cairo_private cairo_status_t |
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102 | _cairo_traps_tessellate_rectangle (cairo_traps_t *traps, |
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103 | const cairo_point_t *top_left, |
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104 | const cairo_point_t *bottom_right); |
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105 | |||
106 | cairo_private void |
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107 | _cairo_traps_add_trap (cairo_traps_t *traps, |
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108 | cairo_fixed_t top, cairo_fixed_t bottom, |
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109 | cairo_line_t *left, cairo_line_t *right); |
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110 | |||
111 | cairo_private int |
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112 | _cairo_traps_contain (const cairo_traps_t *traps, |
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113 | double x, double y); |
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114 | |||
115 | cairo_private void |
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116 | _cairo_traps_extents (const cairo_traps_t *traps, |
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117 | cairo_box_t *extents); |
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118 | |||
119 | cairo_private cairo_int_status_t |
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120 | _cairo_traps_extract_region (cairo_traps_t *traps, |
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121 | cairo_antialias_t antialias, |
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122 | cairo_region_t **region); |
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123 | |||
124 | cairo_private cairo_bool_t |
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125 | _cairo_traps_to_boxes (cairo_traps_t *traps, |
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126 | cairo_antialias_t antialias, |
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127 | cairo_boxes_t *boxes); |
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128 | |||
129 | cairo_private cairo_status_t |
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130 | _cairo_traps_path (const cairo_traps_t *traps, |
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131 | cairo_path_fixed_t *path); |
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132 | |||
133 | cairo_private cairo_int_status_t |
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134 | _cairo_rasterise_polygon_to_traps (cairo_polygon_t *polygon, |
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135 | cairo_fill_rule_t fill_rule, |
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136 | cairo_antialias_t antialias, |
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137 | cairo_traps_t *traps); |
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138 | |||
139 | CAIRO_END_DECLS |
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140 | |||
141 | #endif /* CAIRO_TRAPS_PRIVATE_H */ |