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Diffstat (limited to 'src/3rdparty/harfbuzz/src/harfbuzz-gdef.h')
| -rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-gdef.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-gdef.h b/src/3rdparty/harfbuzz/src/harfbuzz-gdef.h new file mode 100644 index 0000000..b6dcadc --- /dev/null +++ b/src/3rdparty/harfbuzz/src/harfbuzz-gdef.h @@ -0,0 +1,135 @@ +/* + * Copyright (C) 1998-2004 David Turner and Werner Lemberg + * Copyright (C) 2006 Behdad Esfahbod + * + * This is part of HarfBuzz, an OpenType Layout engine library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#ifndef HARFBUZZ_GDEF_H +#define HARFBUZZ_GDEF_H + +#include "harfbuzz-open.h" +#include "harfbuzz-stream.h" + +HB_BEGIN_HEADER + +/* GDEF glyph properties. Note that HB_GDEF_COMPONENT has no corresponding + * flag in the LookupFlag field. */ +#define HB_GDEF_BASE_GLYPH 0x0002 +#define HB_GDEF_LIGATURE 0x0004 +#define HB_GDEF_MARK 0x0008 +#define HB_GDEF_COMPONENT 0x0010 + + +typedef struct HB_AttachPoint_ HB_AttachPoint; + + +struct HB_AttachList_ +{ + HB_Bool loaded; + + HB_Coverage Coverage; /* Coverage table */ + HB_UShort GlyphCount; /* number of glyphs with + attachments */ + HB_AttachPoint* AttachPoint; /* array of AttachPoint tables */ +}; + +typedef struct HB_AttachList_ HB_AttachList; + +typedef struct HB_LigGlyph_ HB_LigGlyph; + +struct HB_LigCaretList_ +{ + HB_Bool loaded; + + HB_Coverage Coverage; /* Coverage table */ + HB_UShort LigGlyphCount; /* number of ligature glyphs */ + HB_LigGlyph* LigGlyph; /* array of LigGlyph tables */ +}; + +typedef struct HB_LigCaretList_ HB_LigCaretList; + + + +/* The `NewGlyphClasses' field is not defined in the TTO specification. + We use it for fonts with a constructed `GlyphClassDef' structure + (i.e., which don't have a GDEF table) to collect glyph classes + assigned during the lookup process. The number of arrays in this + pointer array is GlyphClassDef->cd.cd2.ClassRangeCount+1; the nth + array then contains the glyph class values of the glyphs not covered + by the ClassRangeRecords structures with index n-1 and n. We store + glyph class values for four glyphs in a single array element. + + `LastGlyph' is identical to the number of glyphs minus one in the + font; we need it only if `NewGlyphClasses' is not NULL (to have an + upper bound for the last array). + + Note that we first store the file offset to the `MarkAttachClassDef' + field (which has been introduced in OpenType 1.2) -- since the + `Version' field value hasn't been increased to indicate that we have + one more field for some obscure reason, we must parse the GSUB table + to find out whether class values refer to this table. Only then we + can finally load the MarkAttachClassDef structure if necessary. */ + +struct HB_GDEFHeader_ +{ + HB_UInt offset; + + HB_16Dot16 Version; + + HB_ClassDefinition GlyphClassDef; + HB_AttachList AttachList; + HB_LigCaretList LigCaretList; + HB_UInt MarkAttachClassDef_offset; + HB_ClassDefinition MarkAttachClassDef; /* new in OT 1.2 */ + + HB_UShort LastGlyph; + HB_UShort** NewGlyphClasses; +}; + +typedef struct HB_GDEFHeader_ HB_GDEFHeader; +typedef struct HB_GDEFHeader_* HB_GDEF; + + +HB_Error HB_New_GDEF_Table( HB_GDEFHeader** retptr ); + + +HB_Error HB_Load_GDEF_Table( HB_Stream stream, + HB_GDEFHeader** gdef ); + + +HB_Error HB_Done_GDEF_Table ( HB_GDEFHeader* gdef ); + + +HB_Error HB_GDEF_Get_Glyph_Property( HB_GDEFHeader* gdef, + HB_UShort glyphID, + HB_UShort* property ); + +HB_Error HB_GDEF_Build_ClassDefinition( HB_GDEFHeader* gdef, + HB_UShort num_glyphs, + HB_UShort glyph_count, + HB_UShort* glyph_array, + HB_UShort* class_array ); + + +HB_END_HEADER + +#endif /* HARFBUZZ_GDEF_H */ |