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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* ttsubpix.h */ |
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| 4 | /* */ |
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| 5 | /* TrueType Subpixel Hinting. */ |
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| 6 | /* */ |
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| 7 | /* Copyright 2010-2013 by */ |
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 9 | /* */ |
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| 10 | /* This file is part of the FreeType project, and may only be used, */ |
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| 11 | /* modified, and distributed under the terms of the FreeType project */ |
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 13 | /* this file you indicate that you have read the license and */ |
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| 14 | /* understand and accept it fully. */ |
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| 15 | /* */ |
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| 16 | /***************************************************************************/ |
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| 17 | |||
| 18 | |||
| 19 | #ifndef __TTSUBPIX_H__ |
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| 20 | #define __TTSUBPIX_H__ |
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| 21 | |||
| 22 | #include |
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| 23 | #include "ttobjs.h" |
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| 24 | #include "ttinterp.h" |
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| 25 | |||
| 26 | |||
| 27 | FT_BEGIN_HEADER |
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| 28 | |||
| 29 | |||
| 30 | #ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING |
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| 31 | |||
| 32 | /*************************************************************************/ |
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| 33 | /* */ |
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| 34 | /* ID flags to identify special functions at FDEF and runtime. */ |
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| 35 | /* */ |
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| 36 | /* */ |
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| 37 | #define SPH_FDEF_INLINE_DELTA_1 0x0000001 |
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| 38 | #define SPH_FDEF_INLINE_DELTA_2 0x0000002 |
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| 39 | #define SPH_FDEF_DIAGONAL_STROKE 0x0000004 |
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| 40 | #define SPH_FDEF_VACUFORM_ROUND_1 0x0000008 |
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| 41 | #define SPH_FDEF_TTFAUTOHINT_1 0x0000010 |
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| 42 | #define SPH_FDEF_SPACING_1 0x0000020 |
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| 43 | #define SPH_FDEF_SPACING_2 0x0000040 |
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| 44 | #define SPH_FDEF_TYPEMAN_STROKES 0x0000080 |
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| 45 | #define SPH_FDEF_TYPEMAN_DIAGENDCTRL 0x0000100 |
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| 46 | |||
| 47 | |||
| 48 | /*************************************************************************/ |
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| 49 | /* */ |
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| 50 | /* Tweak flags that are set for each glyph by the below rules. */ |
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| 51 | /* */ |
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| 52 | /* */ |
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| 53 | #define SPH_TWEAK_ALLOW_X_DMOVE 0x0000001 |
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| 54 | #define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000002 |
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| 55 | #define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000004 |
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| 56 | #define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000008 |
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| 57 | #define SPH_TWEAK_DEEMBOLDEN 0x0000010 |
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| 58 | #define SPH_TWEAK_DO_SHPIX 0x0000020 |
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| 59 | #define SPH_TWEAK_EMBOLDEN 0x0000040 |
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| 60 | #define SPH_TWEAK_MIAP_HACK 0x0000080 |
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| 61 | #define SPH_TWEAK_NORMAL_ROUND 0x0000100 |
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| 62 | #define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0000200 |
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| 63 | #define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0000400 |
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| 64 | #define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0000800 |
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| 65 | #define SPH_TWEAK_PIXEL_HINTING 0x0001000 |
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| 66 | #define SPH_TWEAK_RASTERIZER_35 0x0002000 |
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| 67 | #define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0004000 |
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| 68 | #define SPH_TWEAK_SKIP_IUP 0x0008000 |
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| 69 | #define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0010000 |
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| 70 | #define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0020000 |
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| 71 | #define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0040000 |
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| 72 | #define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES_DELTAP 0x0080000 |
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| 73 | |||
| 74 | |||
| 75 | FT_LOCAL( FT_Bool ) |
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| 76 | sph_test_tweak( TT_Face face, |
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| 77 | const FT_String* family, |
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| 78 | FT_UInt ppem, |
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| 79 | const FT_String* style, |
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| 80 | FT_UInt glyph_index, |
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| 81 | const SPH_TweakRule* rule, |
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| 82 | FT_UInt num_rules ); |
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| 83 | |||
| 84 | FT_LOCAL( FT_UInt ) |
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| 85 | sph_test_tweak_x_scaling( TT_Face face, |
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| 86 | const FT_String* family, |
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| 87 | FT_UInt ppem, |
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| 88 | const FT_String* style, |
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| 89 | FT_UInt glyph_index ); |
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| 90 | |||
| 91 | FT_LOCAL( void ) |
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| 92 | sph_set_tweaks( TT_Loader loader, |
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| 93 | FT_UInt glyph_index ); |
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| 94 | |||
| 95 | |||
| 96 | /* These macros are defined absent a method for setting them */ |
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| 97 | #define SPH_OPTION_BITMAP_WIDTHS FALSE |
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| 98 | #define SPH_OPTION_SET_SUBPIXEL TRUE |
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| 99 | #define SPH_OPTION_SET_GRAYSCALE FALSE |
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| 100 | #define SPH_OPTION_SET_COMPATIBLE_WIDTHS FALSE |
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| 101 | #define SPH_OPTION_SET_RASTERIZER_VERSION 38 |
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| 102 | |||
| 103 | #endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */ |
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| 104 | |||
| 105 | |||
| 106 | FT_END_HEADER |
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| 107 | |||
| 108 | #endif /* __TTSUBPIX_H__ */ |
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| 109 | |||
| 110 | /* END */ |