Mercurial > hgrepos > Python2 > PyMuPDF

comparison mupdf-source/source/pdf/pdf-pattern.c @ 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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1:1d09e1dec1d9 2:b50eed0cc0ef
1 // Copyright (C) 2004-2021 Artifex Software, Inc.
2 //
3 // This file is part of MuPDF.
4 //
5 // MuPDF is free software: you can redistribute it and/or modify it under the
6 // terms of the GNU Affero General Public License as published by the Free
7 // Software Foundation, either version 3 of the License, or (at your option)
8 // any later version.
9 //
10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
13 // details.
14 //
15 // You should have received a copy of the GNU Affero General Public License
16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
17 //
18 // Alternative licensing terms are available from the licensor.
19 // For commercial licensing, see <https://www.artifex.com/> or contact
20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
21 // CA 94129, USA, for further information.
22
23 #include "mupdf/fitz.h"
24 #include "mupdf/pdf.h"
25
26 pdf_pattern *
27 pdf_keep_pattern(fz_context *ctx, pdf_pattern *pat)
28 {
29 return fz_keep_storable(ctx, &pat->storable);
30 }
31
32 void
33 pdf_drop_pattern(fz_context *ctx, pdf_pattern *pat)
34 {
35 fz_drop_storable(ctx, &pat->storable);
36 }
37
38 static void
39 pdf_drop_pattern_imp(fz_context *ctx, fz_storable *pat_)
40 {
41 pdf_pattern *pat = (pdf_pattern *)pat_;
42 pdf_drop_obj(ctx, pat->resources);
43 pdf_drop_obj(ctx, pat->contents);
44 fz_free(ctx, pat);
45 }
46
47 static unsigned int
48 pdf_pattern_size(pdf_pattern *pat)
49 {
50 if (pat == NULL)
51 return 0;
52 return sizeof(*pat);
53 }
54
55 pdf_pattern *
56 pdf_load_pattern(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
57 {
58 pdf_pattern *pat;
59
60 if ((pat = pdf_find_item(ctx, pdf_drop_pattern_imp, dict)) != NULL)
61 {
62 return pat;
63 }
64
65 pat = fz_malloc_struct(ctx, pdf_pattern);
66 FZ_INIT_STORABLE(pat, 1, pdf_drop_pattern_imp);
67 pat->document = doc;
68 pat->resources = NULL;
69 pat->contents = NULL;
70 pat->id = pdf_to_num(ctx, dict);
71
72 fz_try(ctx)
73 {
74 /* Store pattern now, to avoid possible recursion if objects refer back to this one */
75 pdf_store_item(ctx, dict, pat, pdf_pattern_size(pat));
76
77 pat->ismask = pdf_dict_get_int(ctx, dict, PDF_NAME(PaintType)) == 2;
78 pat->xstep = pdf_dict_get_real(ctx, dict, PDF_NAME(XStep));
79 pat->ystep = pdf_dict_get_real(ctx, dict, PDF_NAME(YStep));
80 pat->bbox = pdf_dict_get_rect(ctx, dict, PDF_NAME(BBox));
81 pat->matrix = pdf_dict_get_matrix(ctx, dict, PDF_NAME(Matrix));
82
83 pat->resources = pdf_dict_get(ctx, dict, PDF_NAME(Resources));
84 if (pat->resources)
85 pdf_keep_obj(ctx, pat->resources);
86
87 pat->contents = pdf_keep_obj(ctx, dict);
88 }
89 fz_catch(ctx)
90 {
91 pdf_remove_item(ctx, pdf_drop_pattern_imp, dict);
92 pdf_drop_pattern(ctx, pat);
93 fz_rethrow(ctx);
94 }
95 return pat;
96 }