1049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/***************************************************************************/ 2049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 3049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* ttobjs.h */ 4049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 5049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* Objects manager (specification). */ 6049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 7c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner/* Copyright 1996-2009, 2011 by */ 8049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 10049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* This file is part of the FreeType project, and may only be used, */ 11049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* modified, and distributed under the terms of the FreeType project */ 12049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* this file you indicate that you have read the license and */ 14049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* understand and accept it fully. */ 15049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 16049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/***************************************************************************/ 17049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 18049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 19049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifndef __TTOBJS_H__ 20049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#define __TTOBJS_H__ 21049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 22049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 23049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include <ft2build.h> 24049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include FT_INTERNAL_OBJECTS_H 25049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include FT_INTERNAL_TRUETYPE_TYPES_H 26049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 27049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 28049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source ProjectFT_BEGIN_HEADER 29049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 30049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 31049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 32049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 33049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Type> */ 34049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TT_Driver */ 35049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 36049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Description> */ 37049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A handle to a TrueType driver object. */ 38049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 39049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_DriverRec_* TT_Driver; 40049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 41049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 42049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 43049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 44049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Type> */ 45049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TT_Instance */ 46049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 47049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Description> */ 48049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A handle to a TrueType size object. */ 49049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 50049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_SizeRec_* TT_Size; 51049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 52049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 53049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 54049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 55049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Type> */ 56049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TT_GlyphSlot */ 57049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 58049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Description> */ 59049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A handle to a TrueType glyph slot object. */ 60049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 61049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Note> */ 62049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* This is a direct typedef of FT_GlyphSlot, as there is nothing */ 63049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* specific about the TrueType glyph slot. */ 64049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 65049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef FT_GlyphSlot TT_GlyphSlot; 66049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 67049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 68049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 69049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 70049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Struct> */ 71049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TT_GraphicsState */ 72049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 73049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* <Description> */ 74049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* The TrueType graphics state used during bytecode interpretation. */ 75049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 76049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_GraphicsState_ 77049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 78049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort rp0; 79049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort rp1; 80049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort rp2; 81049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 82049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UnitVector dualVector; 83049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UnitVector projVector; 84049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UnitVector freeVector; 85049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 86049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING 87049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool both_x_axis; 88049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 89049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 90049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long loop; 91049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 minimum_distance; 92049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int round_state; 93049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 94049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool auto_flip; 95049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 control_value_cutin; 96049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 single_width_cutin; 97049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 single_width_value; 98049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Short delta_base; 99049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Short delta_shift; 100049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 101049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Byte instruct_control; 1020a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project /* According to Greg Hitchcock from Microsoft, the `scan_control' */ 1030a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project /* variable as documented in the TrueType specification is a 32-bit */ 1040a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project /* integer; the high-word part holds the SCANTYPE value, the low-word */ 1050a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project /* part the SCANCTRL value. We separate it into two fields. */ 106049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool scan_control; 107049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int scan_type; 108049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 109049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort gep0; 110049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort gep1; 111049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort gep2; 112049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 113049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_GraphicsState; 114049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 115049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 116049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef TT_USE_BYTECODE_INTERPRETER 117049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 118049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( void ) 119049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_glyphzone_done( TT_GlyphZone zone ); 120049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 121049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 122049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_glyphzone_new( FT_Memory memory, 123049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort maxPoints, 124049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Short maxContours, 125049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_GlyphZone zone ); 126049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 127049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif /* TT_USE_BYTECODE_INTERPRETER */ 128049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 129049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 130049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 131049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 132049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 133049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* EXECUTION SUBTABLES */ 134049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 135049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* These sub-tables relate to instruction execution. */ 136049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 137049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 138049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 139049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 140049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#define TT_MAX_CODE_RANGES 3 141049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 142049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 143049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 144049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 145049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* There can only be 3 active code ranges at once: */ 146049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - the Font Program */ 147049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - the CVT Program */ 148049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - a glyph's instructions set */ 149049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 150049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef enum TT_CodeRange_Tag_ 151049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 152049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_coderange_none = 0, 153049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_coderange_font, 154049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_coderange_cvt, 155049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_coderange_glyph 156049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 157049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_CodeRange_Tag; 158049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 159049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 160049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_CodeRange_ 161049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 162049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Byte* base; 163049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ULong size; 164049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 165049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_CodeRange; 166049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 167049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef TT_CodeRange TT_CodeRangeTable[TT_MAX_CODE_RANGES]; 168049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 169049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 170049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 171049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 172049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Defines a function/instruction definition record. */ 173049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 174049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_DefRecord_ 175049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 176049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int range; /* in which code range is it located? */ 177049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long start; /* where does it start? */ 178049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt opc; /* function #, or instruction code */ 179049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool active; /* is it active? */ 180049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 181049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_DefRecord, *TT_DefArray; 182049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 183049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 184049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 185049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 186049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Subglyph transformation record. */ 187049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 188049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_Transform_ 189049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 190049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed xx, xy; /* transformation matrix coefficients */ 191049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed yx, yy; 192049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 ox, oy; /* offsets */ 193049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 194049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_Transform; 195049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 196049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 197049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 198049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 199049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A note regarding non-squared pixels: */ 200049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 201049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* (This text will probably go into some docs at some time; for now, it */ 202295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner /* is kept here to explain some definitions in the TT_Size_Metrics */ 203295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner /* record). */ 204049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 205049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* The CVT is a one-dimensional array containing values that control */ 206049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* certain important characteristics in a font, like the height of all */ 207049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* capitals, all lowercase letter, default spacing or stem width/height. */ 208049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 209049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* These values are found in FUnits in the font file, and must be scaled */ 210049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* to pixel coordinates before being used by the CVT and glyph programs. */ 211049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Unfortunately, when using distinct x and y resolutions (or distinct x */ 212049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* and y pointsizes), there are two possible scalings. */ 213049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 214049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A first try was to implement a `lazy' scheme where all values were */ 215049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* scaled when first used. However, while some values are always used */ 216049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* in the same direction, some others are used under many different */ 217049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* circumstances and orientations. */ 218049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 219049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* I have found a simpler way to do the same, and it even seems to work */ 220049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* in most of the cases: */ 221049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 222049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - All CVT values are scaled to the maximum ppem size. */ 223049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 224049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - When performing a read or write in the CVT, a ratio factor is used */ 225049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* to perform adequate scaling. Example: */ 226049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 227049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* x_ppem = 14 */ 228049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* y_ppem = 10 */ 229049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 230049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* We choose ppem = x_ppem = 14 as the CVT scaling size. All cvt */ 231049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* entries are scaled to it. */ 232049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 233049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* x_ratio = 1.0 */ 234049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* y_ratio = y_ppem/ppem (< 1.0) */ 235049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 236049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* We compute the current ratio like: */ 237049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 238049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - If projVector is horizontal, */ 239049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* ratio = x_ratio = 1.0 */ 240049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 241049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - if projVector is vertical, */ 242049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* ratio = y_ratio */ 243049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 244049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - else, */ 245049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* ratio = sqrt( (proj.x * x_ratio) ^ 2 + (proj.y * y_ratio) ^ 2 ) */ 246049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 247049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Reading a cvt value returns */ 248049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* ratio * cvt[index] */ 249049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 250049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Writing a cvt value in pixels: */ 251049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* cvt[index] / ratio */ 252049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 253049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* The current ppem is simply */ 254049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* ratio * ppem */ 255049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 256049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 257049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 258049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 259049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 260049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 261049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Metrics used by the TrueType size and context objects. */ 262049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 263049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_Size_Metrics_ 264049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 265049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* for non-square pixels */ 266049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long x_ratio; 267049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long y_ratio; 268049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 269049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort ppem; /* maximum ppem size */ 270049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long ratio; /* current ratio */ 271049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed scale; 272049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 273049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_F26Dot6 compensations[4]; /* device-specific compensations */ 274049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 275049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool valid; 276049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 277049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool rotated; /* `is the glyph rotated?'-flag */ 278049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool stretched; /* `is the glyph stretched?'-flag */ 279049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 280049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_Size_Metrics; 281049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 282049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 283049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 284049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 285049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TrueType size class. */ 286049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 287049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_SizeRec_ 288049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 289049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_SizeRec root; 290049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 291049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we have our own copy of metrics so that we can modify */ 292049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* it without affecting auto-hinting (when used) */ 293049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Size_Metrics metrics; 294049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 295049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_Size_Metrics ttmetrics; 296049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 297049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ULong strike_index; /* 0xFFFFFFFF to indicate invalid */ 298049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 299049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef TT_USE_BYTECODE_INTERPRETER 300049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 301049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt num_function_defs; /* number of function definitions */ 302049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt max_function_defs; 303049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_DefArray function_defs; /* table of function definitions */ 304049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 305049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt num_instruction_defs; /* number of ins. definitions */ 306049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt max_instruction_defs; 307049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_DefArray instruction_defs; /* table of ins. definitions */ 308049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 309049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt max_func; 310049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt max_ins; 311049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 312049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_CodeRangeTable codeRangeTable; 313049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 314049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_GraphicsState GS; 315049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 316049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ULong cvt_size; /* the scaled control value table */ 317049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long* cvt; 318049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 319049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UShort storage_size; /* The storage area is now part of */ 320049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Long* storage; /* the instance */ 321049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 322049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_GlyphZoneRec twilight; /* The instance's twilight zone */ 323049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 324049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* debugging variables */ 325049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 326049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* When using the debugger, we must keep the */ 327049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* execution context tied to the instance */ 328049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* object rather than asking it on demand. */ 329049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 330049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool debug; 331049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_ExecContext context; 332049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 333049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool bytecode_ready; 334049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool cvt_ready; 335049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 336049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif /* TT_USE_BYTECODE_INTERPRETER */ 337049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 338049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_SizeRec; 339049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 340049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 341049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 342049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 343049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TrueType driver class. */ 344049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 345049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project typedef struct TT_DriverRec_ 346049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 347049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_DriverRec root; 348049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_ExecContext context; /* execution context */ 349049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project TT_GlyphZoneRec zone; /* glyph loader points zone */ 350049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 351049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project void* extension_component; 352049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 353049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } TT_DriverRec; 354049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 355049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 356049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Note: All of the functions below (except tt_size_reset()) are used */ 357049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* as function pointers in a FT_Driver_ClassRec. Therefore their */ 358049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* parameters are of types FT_Face, FT_Size, etc., rather than TT_Face, */ 359049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* TT_Size, etc., so that the compiler can confirm that the types and */ 360049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* number of parameters are correct. In all cases the FT_xxx types are */ 361049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* cast to their TT_xxx counterparts inside the functions since FreeType */ 362049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* will always use the TT driver to create them. */ 363049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 364049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 365049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 366049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 367049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Face functions */ 368049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 369049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 370049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_face_init( FT_Stream stream, 371049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Face ttface, /* TT_Face */ 372049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int face_index, 373049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int num_params, 374049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Parameter* params ); 375049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 376049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( void ) 377049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_face_done( FT_Face ttface ); /* TT_Face */ 378049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 379049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 380049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 381049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 382049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Size functions */ 383049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 384049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 385049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_size_init( FT_Size ttsize ); /* TT_Size */ 386049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 387049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( void ) 388049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_size_done( FT_Size ttsize ); /* TT_Size */ 389049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 390049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef TT_USE_BYTECODE_INTERPRETER 391049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 392049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 393c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner tt_size_run_fpgm( TT_Size size, 394c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner FT_Bool pedantic ); 395049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 396049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 397c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner tt_size_run_prep( TT_Size size, 398c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner FT_Bool pedantic ); 399049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 400049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 401c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner tt_size_ready_bytecode( TT_Size size, 402c3ee10bfa1f76a18500b487de9c85757375b48f3David 'Digit' Turner FT_Bool pedantic ); 403049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 404049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif /* TT_USE_BYTECODE_INTERPRETER */ 405049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 406049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 407049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_size_reset( TT_Size size ); 408049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 409049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 410049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 411049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 412049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Driver functions */ 413049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 414049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 415049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_driver_init( FT_Module ttdriver ); /* TT_Driver */ 416049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 417049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( void ) 418049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_driver_done( FT_Module ttdriver ); /* TT_Driver */ 419049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 420049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 421049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 422049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 423049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Slot functions */ 424049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 425049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL( FT_Error ) 426049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tt_slot_init( FT_GlyphSlot slot ); 427049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 428049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 429049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source ProjectFT_END_HEADER 430049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 431049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif /* __TTOBJS_H__ */ 432049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 433049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 434049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* END */ 435