1ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 2ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 3ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 459d709d503bab6e2b61931737e662dd293b40578ccornelius * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved 5ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 6ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 7ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 8ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#ifndef __ARABICLAYOUTENGINE_H 9ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define __ARABICLAYOUTENGINE_H 10ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 11ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LETypes.h" 12ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LEFontInstance.h" 13ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LEGlyphFilter.h" 14ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LayoutEngine.h" 15ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "OpenTypeLayoutEngine.h" 16ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 17ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "GlyphSubstitutionTables.h" 18ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "GlyphDefinitionTables.h" 19ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "GlyphPositioningTables.h" 20ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 21ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruU_NAMESPACE_BEGIN 22ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 23ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 24ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This class implements OpenType layout for Arabic fonts. It overrides 25ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the characerProcessing method to assign the correct OpenType feature 26ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * tags for the Arabic contextual forms. It also overrides the adjustGlyphPositions 27ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * method to guarantee that all vowel and accent glyphs have zero advance width. 28ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 29ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 30ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 31ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruclass ArabicOpenTypeLayoutEngine : public OpenTypeLayoutEngine 32ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 33ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querupublic: 34ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 35ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This is the main constructor. It constructs an instance of ArabicOpenTypeLayoutEngine for 36ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * a particular font, script and language. It takes the GSUB table as a parameter since 37ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * LayoutEngine::layoutEngineFactory has to read the GSUB table to know that it has an 38ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Indic OpenType font. 39ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 40ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param fontInstance - the font 41ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param scriptCode - the script 42ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param langaugeCode - the language 43ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param gsubTable - the GSUB table 4485bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * @param success - set to an error code if the operation fails 45ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 46ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see LayoutEngine::layoutEngineFactory 47ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see OpenTypeLayoutEngine 48ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see ScriptAndLanguageTags.h for script and language codes 49ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 50ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 51ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 52ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ArabicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, 5359d709d503bab6e2b61931737e662dd293b40578ccornelius le_int32 typoFlags, const LEReferenceTo<GlyphSubstitutionTableHeader> &gsubTable, LEErrorCode &success); 54ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 55ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 56ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This constructor is used when the font requires a "canned" GSUB table which can't be known 57ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * until after this constructor has been invoked. 58ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 59ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param fontInstance - the font 60ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param scriptCode - the script 61ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param langaugeCode - the language 6285bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * @param success - set to an error code if the operation fails 63ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 64ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see OpenTypeLayoutEngine 65ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see ScriptAndLanguageTags.h for script and language codes 66ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 67ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 68ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 69ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ArabicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, 7085bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho le_int32 typoFlags, LEErrorCode &success); 71ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 72ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 73ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The destructor, virtual for correct polymorphic invocation. 74ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 75ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 76ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 77ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual ~ArabicOpenTypeLayoutEngine(); 78ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 79ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 80ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ICU "poor man's RTTI", returns a UClassID for the actual class. 81ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 82ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.8 83ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 84ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual UClassID getDynamicClassID() const; 85ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 86ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 87ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ICU "poor man's RTTI", returns a UClassID for this class. 88ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 89ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.8 90ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 91ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru static UClassID getStaticClassID(); 92ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 93ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruprotected: 94ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 95ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 96ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This method does Arabic OpenType character processing. It assigns the OpenType feature 97ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * tags to the characters to generate the correct contextual forms and ligatures. 98ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 99ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Input parameters: 100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param chars - the input character context 101ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param offset - the index of the first character to process 102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param count - the number of characters to process 103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param max - the number of characters in the input context 104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param rightToLeft - <code>TRUE</code> if the characters are in a right to left directional run 105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output parameters: 107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param outChars - the output character arrayt 108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param charIndices - the output character index array 109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param featureTags - the output feature tag array 110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param success - set to an error code if the operation fails 111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return the output character count 113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 114ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual le_int32 characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, 117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru LEUnicode *&outChars, LEGlyphStorage &glyphStorage, LEErrorCode &success); 118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This method applies the GPOS table if it is present, otherwise it ensures that all vowel 121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and accent glyphs have a zero advance width by calling the adjustMarkGlyphs method. 122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * If the font contains a GDEF table, that is used to identify voewls and accents. Otherwise 123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the character codes are used. 124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param chars - the input character context 126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param offset - the offset of the first character to process 127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param count - the number of characters to process 128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param reverse - <code>TRUE</code> if the glyphs in the glyph array have been reordered 129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param glyphs - the input glyph array 130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param glyphCount - the number of glyphs 131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param positions - the position array, will be updated as needed 132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param success - output parameter set to an error code if the operation fails 133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual void adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool reverse, LEGlyphStorage &glyphStorage, LEErrorCode &success); 137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // static void adjustMarkGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success); 139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The class implements OpenType layout for Arabic fonts which don't 144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * contain a GSUB table, using a canned GSUB table based on Unicode 145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Arabic Presentation Forms. It overrides the mapCharsToGlyphs method 146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * to use the Presentation Forms as logical glyph indices. It overrides the 147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * glyphPostProcessing method to convert the Presentation Forms to actual 148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * glyph indices. 149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see ArabicOpenTypeLayoutEngine 151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruclass UnicodeArabicOpenTypeLayoutEngine : public ArabicOpenTypeLayoutEngine 155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querupublic: 157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This constructs an instance of UnicodeArabicOpenTypeLayoutEngine for a specific font, 159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * script and language. 160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param fontInstance - the font 162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param scriptCode - the script 163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param languageCode - the language 16485bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * @param success - set to an error code if the operation fails 165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see LEFontInstance 167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @see ScriptAndLanguageTags.h for script and language codes 168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UnicodeArabicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, 17285bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho le_int32 typoFlags, LEErrorCode &success); 173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The destructor, virtual for correct polymorphic invocation. 176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual ~UnicodeArabicOpenTypeLayoutEngine(); 180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruprotected: 182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This method converts the Arabic Presentation Forms in the temp glyph array 185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * into actual glyph indices using ArabicOpenTypeLayoutEngine::mapCharsToGlyps. 186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Input paramters: 188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param tempGlyphs - the input presentation forms 189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param tempCharIndices - the input character index array 190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param tempGlyphCount - the number of Presentation Froms 191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output parameters: 193ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param glyphs - the output glyph index array 194ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param charIndices - the output character index array 195ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param success - set to an error code if the operation fails 196ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 197ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return the number of glyph indices in the output glyph index array 198ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual le_int32 glyphPostProcessing(LEGlyphStorage &tempGlyphStorage, LEGlyphStorage &glyphStorage, LEErrorCode &success); 202ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 203ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 204ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This method copies the input characters into the output glyph index array, 205ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * for use by the canned GSUB table. It also generates the character index array. 206ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 207ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Input parameters: 208ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param chars - the input character context 209ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param offset - the offset of the first character to be mapped 210ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param count - the number of characters to be mapped 211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param reverse - if <code>TRUE</code>, the output will be in reverse order 212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param mirror - if <code>TRUE</code>, do character mirroring 213ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param glyphStorage - the glyph storage object. Glyph and char index arrays will be updated. 214ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param success - set to an error code if the operation fails 216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual void mapCharsToGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool reverse, le_bool mirror, 220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru LEGlyphStorage &glyphStorage, LEErrorCode &success); 221ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 222ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /** 223ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This method ensures that all vowel and accent glyphs have a zero advance width by calling 224ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the adjustMarkGlyphs method. The character codes are used to identify the vowel and mark 225ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * glyphs. 226ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 227ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param chars - the input character context 228ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param offset - the offset of the first character to process 229ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param count - the number of characters to process 230ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param reverse - <code>TRUE</code> if the glyphs in the glyph array have been reordered 231ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param glyphStorage - the glyph storage object. The glyph positions will be updated as needed. 232ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param success - output parameter set to an error code if the operation fails 233ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 234ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @internal 235ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 236ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru virtual void adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool reverse, LEGlyphStorage &glyphStorage, LEErrorCode &success); 237ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 238ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 239ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruU_NAMESPACE_END 240ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#endif 241ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 242