Mercurial > hgrepos > Python2 > PyMuPDF
annotate mupdf-source/include/mupdf/fitz/glyph-cache.h @ 29:f76e6575dca9 v1.26.4+1
+++++ v1.26.4+1
| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Fri, 19 Sep 2025 19:59:23 +0200 |
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| rev | line source |
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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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22 |
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23 #ifndef MUPDF_FITZ_GLYPH_CACHE_H |
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24 #define MUPDF_FITZ_GLYPH_CACHE_H |
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25 |
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26 #include "mupdf/fitz/context.h" |
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27 #include "mupdf/fitz/geometry.h" |
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28 #include "mupdf/fitz/font.h" |
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29 #include "mupdf/fitz/pixmap.h" |
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30 #include "mupdf/fitz/device.h" |
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31 |
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32 /** |
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33 Purge all the glyphs from the cache. |
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34 */ |
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35 void fz_purge_glyph_cache(fz_context *ctx); |
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36 |
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37 /** |
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38 Create a pixmap containing a rendered glyph. |
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39 |
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40 Lookup gid from font, clip it with scissor, and rendering it |
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41 with aa bits of antialiasing into a new pixmap. |
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42 |
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43 The caller takes ownership of the pixmap and so must free it. |
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44 |
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45 Note: This function is no longer used for normal rendering |
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46 operations, and is kept around just because we use it in the |
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47 app. It should be considered "at risk" of removal from the API. |
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48 */ |
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49 fz_pixmap *fz_render_glyph_pixmap(fz_context *ctx, fz_font *font, int gid, fz_matrix *ctm, const fz_irect *scissor, int aa); |
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50 |
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51 /** |
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52 Nasty PDF interpreter specific hernia, required to allow the |
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53 interpreter to replay glyphs from a type3 font directly into |
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54 the target device. |
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55 |
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56 This is only used in exceptional circumstances (such as type3 |
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57 glyphs that inherit current graphics state, or nested type3 |
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58 glyphs). |
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59 */ |
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60 void fz_render_t3_glyph_direct(fz_context *ctx, fz_device *dev, fz_font *font, int gid, fz_matrix trm, void *gstate, fz_default_colorspaces *def_cs, void *fill_gstate, void *stroke_gstate); |
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61 |
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62 /** |
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63 Force a type3 font to cache the displaylist for a given glyph |
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64 id. |
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65 |
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66 This caching can involve reading the underlying file, so must |
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67 happen ahead of time, so we aren't suddenly forced to read the |
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68 file while playing a displaylist back. |
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69 */ |
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70 void fz_prepare_t3_glyph(fz_context *ctx, fz_font *font, int gid); |
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71 |
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72 /** |
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73 Dump debug statistics for the glyph cache. |
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74 */ |
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75 void fz_dump_glyph_cache_stats(fz_context *ctx, fz_output *out); |
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76 |
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77 /** |
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78 Perform subpixel quantisation and adjustment on a glyph matrix. |
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79 |
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80 ctm: On entry, the desired 'ideal' transformation for a glyph. |
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81 On exit, adjusted to a (very similar) transformation quantised |
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82 for subpixel caching. |
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83 |
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84 subpix_ctm: Initialised by the routine to the transform that |
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85 should be used to render the glyph. |
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86 |
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87 qe, qf: which subpixel position we quantised to. |
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88 |
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89 Returns: the size of the glyph. |
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90 |
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91 Note: This is currently only exposed for use in our app. It |
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92 should be considered "at risk" of removal from the API. |
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93 */ |
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94 float fz_subpixel_adjust(fz_context *ctx, fz_matrix *ctm, fz_matrix *subpix_ctm, unsigned char *qe, unsigned char *qf); |
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95 |
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96 #endif |
