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Viewing changes to src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h

  • Committer: Package Import Robot
  • Author(s): Timo Jyrinki
  • Date: 2013-02-05 12:46:17 UTC
  • Revision ID: package-import@ubuntu.com-20130205124617-c8jouts182j002fx
Tags: upstream-5.0.1+dfsg
Import upstream version 5.0.1+dfsg

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src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h
 
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/*
 
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 * Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies)
 
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 *
 
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 * This is part of HarfBuzz, an OpenType Layout engine library.
 
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 *
 
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 * Permission is hereby granted, without written agreement and without
 
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 * license or royalty fees, to use, copy, modify, and distribute this
 
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 * software and its documentation for any purpose, provided that the
 
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 * above copyright notice and the following two paragraphs appear in
 
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 * all copies of this software.
 
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 *
 
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 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
 
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 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 
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 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
 
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 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 
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 * DAMAGE.
 
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 *
 
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 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
 
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 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 
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 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 
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 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
 
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 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 
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 */
 
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#ifndef HARFBUZZ_SHAPER_PRIVATE_H
 
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#define HARFBUZZ_SHAPER_PRIVATE_H
 
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HB_BEGIN_HEADER
 
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enum {
 
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    C_DOTTED_CIRCLE = 0x25CC
 
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};
 
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typedef enum 
 
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{
 
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    HB_Combining_BelowLeftAttached       = 200,
 
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    HB_Combining_BelowAttached           = 202,
 
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    HB_Combining_BelowRightAttached      = 204,
 
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    HB_Combining_LeftAttached            = 208,
 
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    HB_Combining_RightAttached           = 210,
 
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    HB_Combining_AboveLeftAttached       = 212,
 
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    HB_Combining_AboveAttached           = 214,
 
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    HB_Combining_AboveRightAttached      = 216,
 
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    HB_Combining_BelowLeft               = 218,
 
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    HB_Combining_Below                   = 220,
 
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    HB_Combining_BelowRight              = 222,
 
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    HB_Combining_Left                    = 224,
 
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    HB_Combining_Right                   = 226,
 
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    HB_Combining_AboveLeft               = 228,
 
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    HB_Combining_Above                   = 230,
 
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    HB_Combining_AboveRight              = 232,
 
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    HB_Combining_DoubleBelow             = 233,
 
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    HB_Combining_DoubleAbove             = 234,
 
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    HB_Combining_IotaSubscript           = 240
 
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} HB_CombiningClass;
 
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typedef enum {
 
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    LocaProperty = 0x1,
 
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    CcmpProperty = 0x2,
 
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    InitProperty = 0x4,
 
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    IsolProperty = 0x8,
 
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    FinaProperty = 0x10,
 
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    MediProperty = 0x20,
 
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    RligProperty = 0x40,
 
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    CaltProperty = 0x80,
 
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    LigaProperty = 0x100,
 
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    DligProperty = 0x200,
 
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    CswhProperty = 0x400,
 
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    MsetProperty = 0x800,
 
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    /* used by indic and myanmar shaper */
 
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    NuktaProperty = 0x8,
 
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    AkhantProperty = 0x10,
 
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    RephProperty = 0x20,
 
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    PreFormProperty = 0x40,
 
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    BelowFormProperty = 0x80,
 
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    AboveFormProperty = 0x100,
 
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    HalfFormProperty = 0x200,
 
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    PostFormProperty = 0x400,
 
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    ConjunctFormProperty = 0x800,
 
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    VattuProperty = 0x1000,
 
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    PreSubstProperty = 0x2000,
 
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    BelowSubstProperty = 0x4000,
 
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    AboveSubstProperty = 0x8000,
 
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    PostSubstProperty = 0x10000,
 
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    HalantProperty = 0x20000,
 
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    CligProperty = 0x40000,
 
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    IndicCaltProperty = 0x80000
 
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} HB_OpenTypeProperty;
 
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/* return true if ok. */
 
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typedef HB_Bool (*HB_ShapeFunction)(HB_ShaperItem *shaper_item);
 
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typedef void (*HB_AttributeFunction)(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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typedef struct {
 
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    HB_ShapeFunction shape;
 
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    HB_AttributeFunction charAttributes;
 
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} HB_ScriptEngine;
 
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extern const HB_ScriptEngine hb_scriptEngines[];
 
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extern HB_Bool HB_BasicShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_GreekShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_TibetanShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_HebrewShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_ArabicShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_HangulShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_MyanmarShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_KhmerShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_IndicShape(HB_ShaperItem *shaper_item);
 
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extern HB_Bool HB_ThaiShape(HB_ShaperItem *shaper_item);
 
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extern void HB_TibetanAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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extern void HB_MyanmarAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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extern void HB_KhmerAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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extern void HB_IndicAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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extern void HB_ThaiAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes);
 
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#ifndef NO_OPENTYPE
 
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typedef struct {
 
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    hb_uint32 tag;
 
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    hb_uint32 property;
 
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} HB_OpenTypeFeature;
 
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#define PositioningProperties 0x80000000
 
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HB_Bool HB_SelectScript(HB_ShaperItem *item, const HB_OpenTypeFeature *features);
 
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HB_Bool HB_OpenTypeShape(HB_ShaperItem *item, const hb_uint32 *properties);
 
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HB_Bool HB_OpenTypePosition(HB_ShaperItem *item, int availableGlyphs, HB_Bool doLogClusters);
 
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#endif // NO_OPENTYPE
 
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void HB_HeuristicPosition(HB_ShaperItem *item);
 
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void HB_HeuristicSetGlyphAttributes(HB_ShaperItem *item);
 
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#define HB_IsControlChar(uc) \
 
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    ((uc >= 0x200b && uc <= 0x200f /* ZW Space, ZWNJ, ZWJ, LRM and RLM */) \
 
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     || (uc >= 0x2028 && uc <= 0x202f /* LS, PS, LRE, RLE, PDF, LRO, RLO, NNBSP */) \
 
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     || (uc >= 0x206a && uc <= 0x206f /* ISS, ASS, IAFS, AFS, NADS, NODS */))
 
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HB_Bool HB_ConvertStringToGlyphIndices(HB_ShaperItem *shaper_item);
 
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#define HB_GetGlyphAdvances(shaper_item) \
 
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    shaper_item->font->klass->getGlyphAdvances(shaper_item->font, \
 
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                                               shaper_item->glyphs, shaper_item->num_glyphs, \
 
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                                               shaper_item->advances, \
 
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                                               shaper_item->face->current_flags);
 
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#define HB_DECLARE_STACKARRAY(Type, Name) \
 
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    Type stack##Name[512]; \
 
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    Type *Name = stack##Name;
 
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#define HB_INIT_STACKARRAY(Type, Name, Length) \
 
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    if ((Length) >= 512) \
 
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        Name = (Type *)malloc((Length) * sizeof(Type));
 
163
 
 
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#define HB_STACKARRAY(Type, Name, Length) \
 
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    HB_DECLARE_STACKARRAY(Type, Name) \
 
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    HB_INIT_STACKARRAY(Type, Name, Length)
 
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168
#define HB_FREE_STACKARRAY(Name) \
 
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    if (stack##Name != Name) \
 
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        free(Name);
 
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HB_END_HEADER
 
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#endif