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| 1 /***************************************************************************/ | |
| 2 /* */ | |
| 3 /* ftsizes.h */ | |
| 4 /* */ | |
| 5 /* FreeType size objects management (specification). */ | |
| 6 /* */ | |
| 7 /* Copyright 1996-2001, 2003, 2004, 2006, 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 /*************************************************************************/ | |
| 20 /* */ | |
| 21 /* Typical application would normally not need to use these functions. */ | |
| 22 /* However, they have been placed in a public API for the rare cases */ | |
| 23 /* where they are needed. */ | |
| 24 /* */ | |
| 25 /*************************************************************************/ | |
| 26 | |
| 27 | |
| 28 #ifndef __FTSIZES_H__ | |
| 29 #define __FTSIZES_H__ | |
| 30 | |
| 31 | |
| 32 #include "../ft2build.h" | |
| 33 #include "freetype.h" | |
| 34 | |
| 35 #ifdef FREETYPE_H | |
| 36 #error "freetype.h of FreeType 1 has been loaded!" | |
| 37 #error "Please fix the directory search order for header files" | |
| 38 #error "so that freetype.h of FreeType 2 is found first." | |
| 39 #endif | |
| 40 | |
| 41 | |
| 42 FT_BEGIN_HEADER | |
| 43 | |
| 44 | |
| 45 /*************************************************************************/ | |
| 46 /* */ | |
| 47 /* <Section> */ | |
| 48 /* sizes_management */ | |
| 49 /* */ | |
| 50 /* <Title> */ | |
| 51 /* Size Management */ | |
| 52 /* */ | |
| 53 /* <Abstract> */ | |
| 54 /* Managing multiple sizes per face. */ | |
| 55 /* */ | |
| 56 /* <Description> */ | |
| 57 /* When creating a new face object (e.g., with @FT_New_Face), an */ | |
| 58 /* @FT_Size object is automatically created and used to store all */ | |
| 59 /* pixel-size dependent information, available in the `face->size' */ | |
| 60 /* field. */ | |
| 61 /* */ | |
| 62 /* It is however possible to create more sizes for a given face, */ | |
| 63 /* mostly in order to manage several character pixel sizes of the */ | |
| 64 /* same font family and style. See @FT_New_Size and @FT_Done_Size. */ | |
| 65 /* */ | |
| 66 /* Note that @FT_Set_Pixel_Sizes and @FT_Set_Char_Size only */ | |
| 67 /* modify the contents of the current `active' size; you thus need */ | |
| 68 /* to use @FT_Activate_Size to change it. */ | |
| 69 /* */ | |
| 70 /* 99% of applications won't need the functions provided here, */ | |
| 71 /* especially if they use the caching sub-system, so be cautious */ | |
| 72 /* when using these. */ | |
| 73 /* */ | |
| 74 /*************************************************************************/ | |
| 75 | |
| 76 | |
| 77 /*************************************************************************/ | |
| 78 /* */ | |
| 79 /* <Function> */ | |
| 80 /* FT_New_Size */ | |
| 81 /* */ | |
| 82 /* <Description> */ | |
| 83 /* Create a new size object from a given face object. */ | |
| 84 /* */ | |
| 85 /* <Input> */ | |
| 86 /* face :: A handle to a parent face object. */ | |
| 87 /* */ | |
| 88 /* <Output> */ | |
| 89 /* asize :: A handle to a new size object. */ | |
| 90 /* */ | |
| 91 /* <Return> */ | |
| 92 /* FreeType error code. 0~means success. */ | |
| 93 /* */ | |
| 94 /* <Note> */ | |
| 95 /* You need to call @FT_Activate_Size in order to select the new size */ | |
| 96 /* for upcoming calls to @FT_Set_Pixel_Sizes, @FT_Set_Char_Size, */ | |
| 97 /* @FT_Load_Glyph, @FT_Load_Char, etc. */ | |
| 98 /* */ | |
| 99 FT_EXPORT( FT_Error ) | |
| 100 FT_New_Size( FT_Face face, | |
| 101 FT_Size* size ); | |
| 102 | |
| 103 | |
| 104 /*************************************************************************/ | |
| 105 /* */ | |
| 106 /* <Function> */ | |
| 107 /* FT_Done_Size */ | |
| 108 /* */ | |
| 109 /* <Description> */ | |
| 110 /* Discard a given size object. Note that @FT_Done_Face */ | |
| 111 /* automatically discards all size objects allocated with */ | |
| 112 /* @FT_New_Size. */ | |
| 113 /* */ | |
| 114 /* <Input> */ | |
| 115 /* size :: A handle to a target size object. */ | |
| 116 /* */ | |
| 117 /* <Return> */ | |
| 118 /* FreeType error code. 0~means success. */ | |
| 119 /* */ | |
| 120 FT_EXPORT( FT_Error ) | |
| 121 FT_Done_Size( FT_Size size ); | |
| 122 | |
| 123 | |
| 124 /*************************************************************************/ | |
| 125 /* */ | |
| 126 /* <Function> */ | |
| 127 /* FT_Activate_Size */ | |
| 128 /* */ | |
| 129 /* <Description> */ | |
| 130 /* Even though it is possible to create several size objects for a */ | |
| 131 /* given face (see @FT_New_Size for details), functions like */ | |
| 132 /* @FT_Load_Glyph or @FT_Load_Char only use the one which has been */ | |
| 133 /* activated last to determine the `current character pixel size'. */ | |
| 134 /* */ | |
| 135 /* This function can be used to `activate' a previously created size */ | |
| 136 /* object. */ | |
| 137 /* */ | |
| 138 /* <Input> */ | |
| 139 /* size :: A handle to a target size object. */ | |
| 140 /* */ | |
| 141 /* <Return> */ | |
| 142 /* FreeType error code. 0~means success. */ | |
| 143 /* */ | |
| 144 /* <Note> */ | |
| 145 /* If `face' is the size's parent face object, this function changes */ | |
| 146 /* the value of `face->size' to the input size handle. */ | |
| 147 /* */ | |
| 148 FT_EXPORT( FT_Error ) | |
| 149 FT_Activate_Size( FT_Size size ); | |
| 150 | |
| 151 /* */ | |
| 152 | |
| 153 | |
| 154 FT_END_HEADER | |
| 155 | |
| 156 #endif /* __FTSIZES_H__ */ | |
| 157 | |
| 158 | |
| 159 /* END */ | |
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Chromium Code Reviews
Issue 815103002:
Update freetype to 2.5.4. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master