Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/include/mupdf/fitz/outline.h @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 // Copyright (C) 2004-2025 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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23 #ifndef MUPDF_FITZ_OUTLINE_H
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24 #define MUPDF_FITZ_OUTLINE_H
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26 #include "mupdf/fitz/system.h"
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27 #include "mupdf/fitz/types.h"
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28 #include "mupdf/fitz/context.h"
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29 #include "mupdf/fitz/link.h"
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30 #include "mupdf/fitz/output.h"
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32 /* Outline */
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33
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34 typedef struct {
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35 char *title;
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36 char *uri;
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37 int is_open;
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38 int flags;
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39 float r;
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40 float g;
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41 float b;
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42 } fz_outline_item;
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43
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44 enum
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45 {
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46 FZ_OUTLINE_FLAG_BOLD = 1,
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47 FZ_OUTLINE_FLAG_ITALIC = 2,
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48 };
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49
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50 typedef struct fz_outline_iterator fz_outline_iterator;
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52 /**
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53 Call to get the current outline item.
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54
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55 Can return NULL. The item is only valid until the next call.
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56 */
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57 fz_outline_item *fz_outline_iterator_item(fz_context *ctx, fz_outline_iterator *iter);
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59 /**
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60 Calls to move the iterator position.
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61
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62 A negative return value means we could not move as requested. Otherwise:
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63 0 = the final position has a valid item.
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64 1 = not a valid item, but we can insert an item here.
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65 */
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66 int fz_outline_iterator_next(fz_context *ctx, fz_outline_iterator *iter);
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67 int fz_outline_iterator_prev(fz_context *ctx, fz_outline_iterator *iter);
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68 int fz_outline_iterator_up(fz_context *ctx, fz_outline_iterator *iter);
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69 int fz_outline_iterator_down(fz_context *ctx, fz_outline_iterator *iter);
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71 /**
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72 Call to insert a new item BEFORE the current point.
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73
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74 Ownership of pointers are retained by the caller. The item data will be copied.
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75
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76 After an insert, we do not change where we are pointing.
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77 The return code is the same as for next, it indicates the current iterator position.
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78
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79 Note that for PDF documents at least, the is_open field is ignored. All childless
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80 nodes are considered closed by PDF, hence (given every newly inserted node is
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81 childless by definition) all new nodes are inserted with is_open == false.
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82 */
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83 int fz_outline_iterator_insert(fz_context *ctx, fz_outline_iterator *iter, fz_outline_item *item);
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84
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85 /**
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86 Delete the current item.
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87
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88 This implicitly moves us to the 'next' item, and the return code is as for fz_outline_iterator_next.
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89 */
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90 int fz_outline_iterator_delete(fz_context *ctx, fz_outline_iterator *iter);
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91
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92 /**
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93 Update the current item properties according to the given item.
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94 */
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95 void fz_outline_iterator_update(fz_context *ctx, fz_outline_iterator *iter, fz_outline_item *item);
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96
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97 /**
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98 Drop the current iterator.
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99 */
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100 void fz_drop_outline_iterator(fz_context *ctx, fz_outline_iterator *iter);
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101
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102
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103 /** Structure based API */
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104
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105 /**
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106 fz_outline is a tree of the outline of a document (also known
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107 as table of contents).
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108
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109 title: Title of outline item using UTF-8 encoding. May be NULL
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110 if the outline item has no text string.
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111
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112 uri: Destination in the document to be displayed when this
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113 outline item is activated. May be an internal or external
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114 link, or NULL if the outline item does not have a destination.
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115
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116 page: The page number of an internal link, or -1 for external
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117 links or links with no destination.
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118
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119 next: The next outline item at the same level as this outline
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120 item. May be NULL if no more outline items exist at this level.
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121
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122 down: The outline items immediate children in the hierarchy.
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123 May be NULL if no children exist.
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124
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125 is_open: If zero, the outline element is closed in the UI. If
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126 1, it should be open, showing any child elements.
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127
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128 flags: Bit 0 set -> Bold, Bit 1 set -> Italic. All other bits
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129 reserved.
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130
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131 r, g, b: The RGB components of the color of this entry.
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132 */
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133 typedef struct fz_outline
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134 {
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135 int refs;
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136 char *title;
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137 char *uri;
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138 fz_location page;
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139 float x, y;
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140 struct fz_outline *next;
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141 struct fz_outline *down;
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142 unsigned int is_open : 1;
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143 unsigned int flags : 7;
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144 unsigned int r : 8;
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145 unsigned int g : 8;
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146 unsigned int b : 8;
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147 } fz_outline;
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148
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149 /**
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150 Create a new outline entry with zeroed fields for the caller
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151 to fill in.
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152 */
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153 fz_outline *fz_new_outline(fz_context *ctx);
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154
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155 /**
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156 Increment the reference count. Returns the same pointer.
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157
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158 Never throws exceptions.
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159 */
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160 fz_outline *fz_keep_outline(fz_context *ctx, fz_outline *outline);
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161
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162 /**
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163 Decrements the reference count. When the reference point
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164 reaches zero, the outline is freed.
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165
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166 When freed, it will drop linked outline entries (next and down)
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167 too, thus a whole outline structure can be dropped by dropping
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168 the top entry.
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169
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170 Never throws exceptions.
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171 */
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172 void fz_drop_outline(fz_context *ctx, fz_outline *outline);
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173
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174 /**
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175 Routine to implement the old Structure based API from an iterator.
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176 */
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177 fz_outline *
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178 fz_load_outline_from_iterator(fz_context *ctx, fz_outline_iterator *iter);
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179
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180
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181 /**
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182 Implementation details.
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183 Of use to people coding new document handlers.
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184 */
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185
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186 /**
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187 Function type for getting the current item.
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188
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189 Can return NULL. The item is only valid until the next call.
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190 */
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191 typedef fz_outline_item *(fz_outline_iterator_item_fn)(fz_context *ctx, fz_outline_iterator *iter);
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192
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193 /**
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194 Function types for moving the iterator position.
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195
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196 A negative return value means we could not move as requested. Otherwise:
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197 0 = the final position has a valid item.
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198 1 = not a valid item, but we can insert an item here.
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199 */
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200 typedef int (fz_outline_iterator_next_fn)(fz_context *ctx, fz_outline_iterator *iter);
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201 typedef int (fz_outline_iterator_prev_fn)(fz_context *ctx, fz_outline_iterator *iter);
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202 typedef int (fz_outline_iterator_up_fn)(fz_context *ctx, fz_outline_iterator *iter);
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203 typedef int (fz_outline_iterator_down_fn)(fz_context *ctx, fz_outline_iterator *iter);
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204
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205 /**
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206 Function type for inserting a new item BEFORE the current point.
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207
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208 Ownership of pointers are retained by the caller. The item data will be copied.
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209
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210 After an insert, we implicitly do a next, so that a successive insert operation
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211 would insert after the item inserted here. The return code is therefore as for next.
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212 */
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213 typedef int (fz_outline_iterator_insert_fn)(fz_context *ctx, fz_outline_iterator *iter, fz_outline_item *item);
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214
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215 /**
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216 Function type for deleting the current item.
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217
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218 This implicitly moves us to the 'next' item, and the return code is as for fz_outline_iterator_next.
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219 */
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220 typedef int (fz_outline_iterator_delete_fn)(fz_context *ctx, fz_outline_iterator *iter);
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221
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222 /**
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223 Function type for updating the current item properties according to the given item.
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224 */
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225 typedef void (fz_outline_iterator_update_fn)(fz_context *ctx, fz_outline_iterator *iter, fz_outline_item *item);
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226
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227 /**
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228 Function type for dropping the current iterator.
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229 */
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230 typedef void (fz_outline_iterator_drop_fn)(fz_context *ctx, fz_outline_iterator *iter);
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231
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232 #define fz_new_derived_outline_iter(CTX, TYPE, DOC)\
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233 ((TYPE *)Memento_label(fz_new_outline_iterator_of_size(ctx,sizeof(TYPE),DOC),#TYPE))
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234
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235 fz_outline_iterator *fz_new_outline_iterator_of_size(fz_context *ctx, size_t size, fz_document *doc);
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236
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237 fz_outline_iterator *fz_outline_iterator_from_outline(fz_context *ctx, fz_outline *outline);
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238
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239 struct fz_outline_iterator {
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240 /* Functions */
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241 fz_outline_iterator_drop_fn *drop;
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242 fz_outline_iterator_item_fn *item;
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243 fz_outline_iterator_next_fn *next;
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244 fz_outline_iterator_prev_fn *prev;
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245 fz_outline_iterator_up_fn *up;
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246 fz_outline_iterator_down_fn *down;
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247 fz_outline_iterator_insert_fn *insert;
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248 fz_outline_iterator_update_fn *update;
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249 fz_outline_iterator_delete_fn *del;
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250 /* Common state */
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251 fz_document *doc;
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252 };
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253
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254 #endif