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| 1 /***************************************************************************/ | |
| 2 /* */ | |
| 3 /* ftpfr.h */ | |
| 4 /* */ | |
| 5 /* FreeType API for accessing PFR-specific data (specification only). */ | |
| 6 /* */ | |
| 7 /* Copyright 2002, 2003, 2004, 2006, 2008, 2009 by */ | |
| 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ | |
| 9 /* */ | |
| 10 /* This file is part of the FreeType project, and may only be used, */ | |
| 11 /* modified, and distributed under the terms of the FreeType project */ | |
| 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ | |
| 13 /* this file you indicate that you have read the license and */ | |
| 14 /* understand and accept it fully. */ | |
| 15 /* */ | |
| 16 /***************************************************************************/ | |
| 17 | |
| 18 | |
| 19 #ifndef __FTPFR_H__ | |
| 20 #define __FTPFR_H__ | |
| 21 | |
| 22 #include <ft2build.h> | |
| 23 #include FT_FREETYPE_H | |
| 24 | |
| 25 #ifdef FREETYPE_H | |
| 26 #error "freetype.h of FreeType 1 has been loaded!" | |
| 27 #error "Please fix the directory search order for header files" | |
| 28 #error "so that freetype.h of FreeType 2 is found first." | |
| 29 #endif | |
| 30 | |
| 31 | |
| 32 FT_BEGIN_HEADER | |
| 33 | |
| 34 | |
| 35 /*************************************************************************/ | |
| 36 /* */ | |
| 37 /* <Section> */ | |
| 38 /* pfr_fonts */ | |
| 39 /* */ | |
| 40 /* <Title> */ | |
| 41 /* PFR Fonts */ | |
| 42 /* */ | |
| 43 /* <Abstract> */ | |
| 44 /* PFR/TrueDoc specific API. */ | |
| 45 /* */ | |
| 46 /* <Description> */ | |
| 47 /* This section contains the declaration of PFR-specific functions. */ | |
| 48 /* */ | |
| 49 /*************************************************************************/ | |
| 50 | |
| 51 | |
| 52 /********************************************************************** | |
| 53 * | |
| 54 * @function: | |
| 55 * FT_Get_PFR_Metrics | |
| 56 * | |
| 57 * @description: | |
| 58 * Return the outline and metrics resolutions of a given PFR face. | |
| 59 * | |
| 60 * @input: | |
| 61 * face :: Handle to the input face. It can be a non-PFR face. | |
| 62 * | |
| 63 * @output: | |
| 64 * aoutline_resolution :: | |
| 65 * Outline resolution. This is equivalent to `face->units_per_EM' | |
| 66 * for non-PFR fonts. Optional (parameter can be NULL). | |
| 67 * | |
| 68 * ametrics_resolution :: | |
| 69 * Metrics resolution. This is equivalent to `outline_resolution' | |
| 70 * for non-PFR fonts. Optional (parameter can be NULL). | |
| 71 * | |
| 72 * ametrics_x_scale :: | |
| 73 * A 16.16 fixed-point number used to scale distance expressed | |
| 74 * in metrics units to device sub-pixels. This is equivalent to | |
| 75 * `face->size->x_scale', but for metrics only. Optional (parameter | |
| 76 * can be NULL). | |
| 77 * | |
| 78 * ametrics_y_scale :: | |
| 79 * Same as `ametrics_x_scale' but for the vertical direction. | |
| 80 * optional (parameter can be NULL). | |
| 81 * | |
| 82 * @return: | |
| 83 * FreeType error code. 0~means success. | |
| 84 * | |
| 85 * @note: | |
| 86 * If the input face is not a PFR, this function will return an error. | |
| 87 * However, in all cases, it will return valid values. | |
| 88 */ | |
| 89 FT_EXPORT( FT_Error ) | |
| 90 FT_Get_PFR_Metrics( FT_Face face, | |
| 91 FT_UInt *aoutline_resolution, | |
| 92 FT_UInt *ametrics_resolution, | |
| 93 FT_Fixed *ametrics_x_scale, | |
| 94 FT_Fixed *ametrics_y_scale ); | |
| 95 | |
| 96 | |
| 97 /********************************************************************** | |
| 98 * | |
| 99 * @function: | |
| 100 * FT_Get_PFR_Kerning | |
| 101 * | |
| 102 * @description: | |
| 103 * Return the kerning pair corresponding to two glyphs in a PFR face. | |
| 104 * The distance is expressed in metrics units, unlike the result of | |
| 105 * @FT_Get_Kerning. | |
| 106 * | |
| 107 * @input: | |
| 108 * face :: A handle to the input face. | |
| 109 * | |
| 110 * left :: Index of the left glyph. | |
| 111 * | |
| 112 * right :: Index of the right glyph. | |
| 113 * | |
| 114 * @output: | |
| 115 * avector :: A kerning vector. | |
| 116 * | |
| 117 * @return: | |
| 118 * FreeType error code. 0~means success. | |
| 119 * | |
| 120 * @note: | |
| 121 * This function always return distances in original PFR metrics | |
| 122 * units. This is unlike @FT_Get_Kerning with the @FT_KERNING_UNSCALED | |
| 123 * mode, which always returns distances converted to outline units. | |
| 124 * | |
| 125 * You can use the value of the `x_scale' and `y_scale' parameters | |
| 126 * returned by @FT_Get_PFR_Metrics to scale these to device sub-pixels. | |
| 127 */ | |
| 128 FT_EXPORT( FT_Error ) | |
| 129 FT_Get_PFR_Kerning( FT_Face face, | |
| 130 FT_UInt left, | |
| 131 FT_UInt right, | |
| 132 FT_Vector *avector ); | |
| 133 | |
| 134 | |
| 135 /********************************************************************** | |
| 136 * | |
| 137 * @function: | |
| 138 * FT_Get_PFR_Advance | |
| 139 * | |
| 140 * @description: | |
| 141 * Return a given glyph advance, expressed in original metrics units, | |
| 142 * from a PFR font. | |
| 143 * | |
| 144 * @input: | |
| 145 * face :: A handle to the input face. | |
| 146 * | |
| 147 * gindex :: The glyph index. | |
| 148 * | |
| 149 * @output: | |
| 150 * aadvance :: The glyph advance in metrics units. | |
| 151 * | |
| 152 * @return: | |
| 153 * FreeType error code. 0~means success. | |
| 154 * | |
| 155 * @note: | |
| 156 * You can use the `x_scale' or `y_scale' results of @FT_Get_PFR_Metrics | |
| 157 * to convert the advance to device sub-pixels (i.e., 1/64th of pixels). | |
| 158 */ | |
| 159 FT_EXPORT( FT_Error ) | |
| 160 FT_Get_PFR_Advance( FT_Face face, | |
| 161 FT_UInt gindex, | |
| 162 FT_Pos *aadvance ); | |
| 163 | |
| 164 /* */ | |
| 165 | |
| 166 | |
| 167 FT_END_HEADER | |
| 168 | |
| 169 #endif /* __FTPFR_H__ */ | |
| 170 | |
| 171 | |
| 172 /* END */ | |
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Chromium Code Reviews
Issue 1413673003:
Update bundled freetype to 2.6.1 (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master