Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/source/pdf/pdf-xobject.c @ 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) 2004-2024 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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22
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23 #include "mupdf/fitz.h"
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24 #include "mupdf/pdf.h"
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26 pdf_obj *
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27 pdf_xobject_resources(fz_context *ctx, pdf_obj *xobj)
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28 {
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29 return pdf_dict_get(ctx, xobj, PDF_NAME(Resources));
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30 }
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31
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32 fz_rect
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33 pdf_xobject_bbox(fz_context *ctx, pdf_obj *xobj)
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34 {
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35 return pdf_dict_get_rect(ctx, xobj, PDF_NAME(BBox));
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36 }
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37
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38 fz_matrix
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39 pdf_xobject_matrix(fz_context *ctx, pdf_obj *xobj)
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40 {
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41 return pdf_dict_get_matrix(ctx, xobj, PDF_NAME(Matrix));
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42 }
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43
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44 int pdf_xobject_isolated(fz_context *ctx, pdf_obj *xobj)
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45 {
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46 pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
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47 if (group)
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48 return pdf_dict_get_bool(ctx, group, PDF_NAME(I));
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49 return 0;
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50 }
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51
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52 int pdf_xobject_knockout(fz_context *ctx, pdf_obj *xobj)
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53 {
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54 pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
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55 if (group)
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56 return pdf_dict_get_bool(ctx, group, PDF_NAME(K));
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57 return 0;
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58 }
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59
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60 int pdf_xobject_transparency(fz_context *ctx, pdf_obj *xobj)
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61 {
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62 pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
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63 if (group)
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64 if (pdf_name_eq(ctx, pdf_dict_get(ctx, group, PDF_NAME(S)), PDF_NAME(Transparency)))
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65 return 1;
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66 return 0;
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67 }
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68
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69 fz_colorspace *
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70 pdf_xobject_colorspace(fz_context *ctx, pdf_obj *xobj)
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71 {
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72 pdf_obj *group = pdf_dict_get(ctx, xobj, PDF_NAME(Group));
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73 if (group)
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74 {
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75 pdf_obj *cs = pdf_dict_get(ctx, group, PDF_NAME(CS));
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76 if (cs)
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77 {
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78 fz_colorspace *colorspace = NULL;
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79 fz_try(ctx)
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80 colorspace = pdf_load_colorspace(ctx, cs);
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81 fz_catch(ctx)
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82 {
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83 fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
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84 fz_rethrow_if(ctx, FZ_ERROR_SYSTEM);
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85 fz_report_error(ctx);
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86 fz_warn(ctx, "Ignoring XObject blending colorspace.");
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87 }
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88
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89 if (!fz_is_valid_blend_colorspace(ctx, colorspace))
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90 {
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91 fz_warn(ctx, "Ignoring invalid XObject blending colorspace: %s.", fz_colorspace_name(ctx, colorspace));
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92 fz_drop_colorspace(ctx, colorspace);
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93 return NULL;
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94 }
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95 return colorspace;
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96 }
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97 }
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98 return NULL;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
99 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
100
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
101 pdf_obj *
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
102 pdf_new_xobject(fz_context *ctx, pdf_document *doc, fz_rect bbox, fz_matrix matrix, pdf_obj *res, fz_buffer *contents)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
103 {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
104 pdf_obj *ind = NULL;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
105 pdf_obj *form = pdf_new_dict(ctx, doc, 5);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 fz_try(ctx)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
107 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
108 pdf_dict_put(ctx, form, PDF_NAME(Type), PDF_NAME(XObject));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
109 pdf_dict_put(ctx, form, PDF_NAME(Subtype), PDF_NAME(Form));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
110 pdf_dict_put_rect(ctx, form, PDF_NAME(BBox), bbox);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
111 pdf_dict_put_matrix(ctx, form, PDF_NAME(Matrix), matrix);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
112 if (res)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
113 pdf_dict_put(ctx, form, PDF_NAME(Resources), res);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
114 ind = pdf_add_stream(ctx, doc, contents, form, 0);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
115 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
116 fz_always(ctx)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
117 pdf_drop_obj(ctx, form);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
118 fz_catch(ctx)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
119 fz_rethrow(ctx);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
120 return ind;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
121 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
122
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
123 void
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
124 pdf_update_xobject(fz_context *ctx, pdf_document *doc, pdf_obj *form, fz_rect bbox, fz_matrix matrix, pdf_obj *res, fz_buffer *contents)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
125 {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
126 pdf_dict_put_rect(ctx, form, PDF_NAME(BBox), bbox);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
127 pdf_dict_put_matrix(ctx, form, PDF_NAME(Matrix), matrix);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
128 if (res)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
129 pdf_dict_put(ctx, form, PDF_NAME(Resources), res);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
130 else
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
131 pdf_dict_del(ctx, form, PDF_NAME(Resources));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
132 pdf_update_stream(ctx, doc, form, contents, 0);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
133 }