Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/include/mupdf/fitz/separation.h @ 29:f76e6575dca9 v1.26.4+1

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+++++ v1.26.4+1
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 19:59:23 +0200
parents b50eed0cc0ef
children
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1 // Copyright (C) 2004-2021 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_SEPARATION_H
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24 #define MUPDF_FITZ_SEPARATION_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/color.h"
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29
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30 /**
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31 A fz_separation structure holds details of a set of separations
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32 (such as might be used on within a page of the document).
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33
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34 The app might control the separations by enabling/disabling them,
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35 and subsequent renders would take this into account.
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36 */
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38 enum
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39 {
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40 FZ_MAX_SEPARATIONS = 64
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41 };
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42
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43 typedef struct fz_separations fz_separations;
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45 typedef enum
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46 {
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47 /* "Composite" separations are rendered using process
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48 * colors using the equivalent colors */
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49 FZ_SEPARATION_COMPOSITE = 0,
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50 /* Spot colors are rendered into their own spot plane. */
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51 FZ_SEPARATION_SPOT = 1,
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52 /* Disabled colors are not rendered at all in the final
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53 * output. */
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54 FZ_SEPARATION_DISABLED = 2
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55 } fz_separation_behavior;
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56
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57 /**
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58 Create a new separations structure (initially empty)
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59 */
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60 fz_separations *fz_new_separations(fz_context *ctx, int controllable);
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61
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62 /**
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63 Increment the reference count for a separations structure.
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64 Returns the same pointer.
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65
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66 Never throws exceptions.
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67 */
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68 fz_separations *fz_keep_separations(fz_context *ctx, fz_separations *sep);
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70 /**
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71 Decrement the reference count for a separations structure.
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72 When the reference count hits zero, the separations structure
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73 is freed.
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74
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75 Never throws exceptions.
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76 */
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77 void fz_drop_separations(fz_context *ctx, fz_separations *sep);
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79 /**
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80 Add a separation (null terminated name, colorspace)
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81 */
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82 void fz_add_separation(fz_context *ctx, fz_separations *sep, const char *name, fz_colorspace *cs, int cs_channel);
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83
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84 /**
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85 Add a separation with equivalents (null terminated name,
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86 colorspace)
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87
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88 (old, deprecated)
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89 */
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90 void fz_add_separation_equivalents(fz_context *ctx, fz_separations *sep, uint32_t rgba, uint32_t cmyk, const char *name);
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92 /**
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93 Control the rendering of a given separation.
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94 */
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95 void fz_set_separation_behavior(fz_context *ctx, fz_separations *sep, int separation, fz_separation_behavior behavior);
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97 /**
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98 Test for the current behavior of a separation.
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99 */
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100 fz_separation_behavior fz_separation_current_behavior(fz_context *ctx, const fz_separations *sep, int separation);
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101
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102 const char *fz_separation_name(fz_context *ctx, const fz_separations *sep, int separation);
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103 int fz_count_separations(fz_context *ctx, const fz_separations *sep);
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104
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105 /**
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106 Return the number of active separations.
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107 */
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108 int fz_count_active_separations(fz_context *ctx, const fz_separations *seps);
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109
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110 /**
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111 Compare 2 separations structures (or NULLs).
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112
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113 Return 0 if identical, non-zero if not identical.
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114 */
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115 int fz_compare_separations(fz_context *ctx, const fz_separations *sep1, const fz_separations *sep2);
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116
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117
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118 /**
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119 Return a separations object with all the spots in the input
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120 separations object that are set to composite, reset to be
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121 enabled. If there ARE no spots in the object, this returns
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122 NULL. If the object already has all its spots enabled, then
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123 just returns another handle on the same object.
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124 */
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125 fz_separations *fz_clone_separations_for_overprint(fz_context *ctx, fz_separations *seps);
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126
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127 /**
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128 Convert a color given in terms of one colorspace,
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129 to a color in terms of another colorspace/separations.
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130 */
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131 void fz_convert_separation_colors(fz_context *ctx, fz_colorspace *src_cs, const float *src_color, fz_separations *dst_seps, fz_colorspace *dst_cs, float *dst_color, fz_color_params color_params);
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132
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133 /**
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134 Get the equivalent separation color in a given colorspace.
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135 */
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136 void fz_separation_equivalent(fz_context *ctx, const fz_separations *seps, int idx, fz_colorspace *dst_cs, float *dst_color, fz_colorspace *prf, fz_color_params color_params);
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137
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138 #endif