Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/include/mupdf/fitz/link.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 // Copyright (C) 2004-2022 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_LINK_H
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24 #define MUPDF_FITZ_LINK_H
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26 #include "mupdf/fitz/system.h"
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27 #include "mupdf/fitz/context.h"
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28 #include "mupdf/fitz/geometry.h"
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29 #include "mupdf/fitz/types.h"
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31 typedef struct fz_link fz_link;
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32 typedef void (fz_link_set_rect_fn)(fz_context *ctx, fz_link *link, fz_rect rect);
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33 typedef void (fz_link_set_uri_fn)(fz_context *ctx, fz_link *link, const char *uri);
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34 typedef void (fz_link_drop_link_fn)(fz_context *ctx, fz_link *link);
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36 /**
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37 fz_link is a list of interactive links on a page.
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38
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39 There is no relation between the order of the links in the
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40 list and the order they appear on the page. The list of links
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41 for a given page can be obtained from fz_load_links.
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43 A link is reference counted. Dropping a reference to a link is
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44 done by calling fz_drop_link.
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46 rect: The hot zone. The area that can be clicked in
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47 untransformed coordinates.
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49 uri: Link destinations come in two forms: internal and external.
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50 Internal links refer to other pages in the same document.
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51 External links are URLs to other documents.
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53 next: A pointer to the next link on the same page.
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54 */
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55 typedef struct fz_link
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56 {
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57 int refs;
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58 struct fz_link *next;
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59 fz_rect rect;
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60 char *uri;
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61 fz_link_set_rect_fn *set_rect_fn;
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62 fz_link_set_uri_fn *set_uri_fn;
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63 fz_link_drop_link_fn *drop;
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64 } fz_link;
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65
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66 typedef enum
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67 {
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68 FZ_LINK_DEST_FIT,
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69 FZ_LINK_DEST_FIT_B,
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70 FZ_LINK_DEST_FIT_H,
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71 FZ_LINK_DEST_FIT_BH,
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72 FZ_LINK_DEST_FIT_V,
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73 FZ_LINK_DEST_FIT_BV,
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74 FZ_LINK_DEST_FIT_R,
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75 FZ_LINK_DEST_XYZ
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76 } fz_link_dest_type;
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78 typedef struct
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79 {
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80 fz_location loc;
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81 fz_link_dest_type type;
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82 float x, y, w, h, zoom;
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83 } fz_link_dest;
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84
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85 fz_link_dest fz_make_link_dest_none(void);
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86 fz_link_dest fz_make_link_dest_xyz(int chapter, int page, float x, float y, float z);
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87
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88 /**
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89 Create a new link record.
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90
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91 next is set to NULL with the expectation that the caller will
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92 handle the linked list setup. Internal function.
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94 Different document types will be implemented by deriving from
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95 fz_link. This macro allocates such derived structures, and
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96 initialises the base sections.
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97 */
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98 fz_link *fz_new_link_of_size(fz_context *ctx, int size, fz_rect rect, const char *uri);
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99 #define fz_new_derived_link(CTX,TYPE,RECT,URI) \
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100 ((TYPE *)Memento_label(fz_new_link_of_size(CTX,sizeof(TYPE),RECT,URI),#TYPE))
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101
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102 /**
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103 Increment the reference count for a link. The same pointer is
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104 returned.
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105
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106 Never throws exceptions.
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107 */
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108 fz_link *fz_keep_link(fz_context *ctx, fz_link *link);
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109
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110 /**
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111 Decrement the reference count for a link. When the reference
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112 count reaches zero, the link is destroyed.
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113
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114 When a link is freed, the reference for any linked link (next)
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115 is dropped too, thus an entire linked list of fz_link's can be
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116 freed by just dropping the head.
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117 */
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118 void fz_drop_link(fz_context *ctx, fz_link *link);
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119
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120 /**
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121 Query whether a link is external to a document (determined by
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122 uri containing a ':', intended to match with '://' which
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123 separates the scheme from the scheme specific parts in URIs).
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124 */
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125 int fz_is_external_link(fz_context *ctx, const char *uri);
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126
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127 void fz_set_link_rect(fz_context *ctx, fz_link *link, fz_rect rect);
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128 void fz_set_link_uri(fz_context *ctx, fz_link *link, const char *uri);
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129
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130 #endif