1ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 2ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * HanLayoutEngine.cpp: OpenType processing for Han fonts. 3ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 459d709d503bab6e2b61931737e662dd293b40578ccornelius * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved. 5ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 6ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 7ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LETypes.h" 8ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LEScripts.h" 9ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LELanguages.h" 10ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 11ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LayoutEngine.h" 12ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "OpenTypeLayoutEngine.h" 13ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "HanLayoutEngine.h" 14ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "ScriptAndLanguageTags.h" 15ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "LEGlyphStorage.h" 16ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "OpenTypeTables.h" 17ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 18ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruU_NAMESPACE_BEGIN 19ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 20ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruUOBJECT_DEFINE_RTTI_IMPLEMENTATION(HanOpenTypeLayoutEngine) 21ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 22ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define loclFeatureTag LE_LOCL_FEATURE_TAG 23ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define smplFeatureTag LE_SMPL_FEATURE_TAG 24ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define tradFeatureTag LE_TRAD_FEATURE_TAG 25ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 26ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define loclFeatureMask 0x80000000UL 27ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define smplFeatureMask 0x40000000UL 28ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define tradFeatureMask 0x20000000UL 29ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 30ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const FeatureMap featureMap[] = 31ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 32ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru {loclFeatureTag, loclFeatureMask}, 33ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru {smplFeatureTag, smplFeatureMask}, 34ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru {tradFeatureTag, tradFeatureMask} 35ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 36ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 37ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const le_int32 featureMapCount = LE_ARRAY_SIZE(featureMap); 38ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 39ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define features (loclFeatureMask) 40ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 41ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruHanOpenTypeLayoutEngine::HanOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, 4259d709d503bab6e2b61931737e662dd293b40578ccornelius le_int32 typoFlags, const LEReferenceTo<GlyphSubstitutionTableHeader> &gsubTable, LEErrorCode &success) 4385bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho : OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable, success) 44ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 45ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru fFeatureMap = featureMap; 46ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru fFeatureMapCount = featureMapCount; 47ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 48ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 49ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruHanOpenTypeLayoutEngine::~HanOpenTypeLayoutEngine() 50ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 51ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // nothing to do 52ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 53ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 54ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querule_int32 HanOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool /*rightToLeft*/, 55ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru LEUnicode *&/*outChars*/, LEGlyphStorage &glyphStorage, LEErrorCode &success) 56ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru{ 57ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if (LE_FAILURE(success)) { 58ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return 0; 59ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 60ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 61ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { 62ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru success = LE_ILLEGAL_ARGUMENT_ERROR; 63ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return 0; 64ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 65ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 66ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru glyphStorage.allocateGlyphArray(count, FALSE, success); 67ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru glyphStorage.allocateAuxData(success); 68ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 69ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if (LE_FAILURE(success)) { 70ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return 0; 71ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 72ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 73ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // FIXME: do we want to add the 'trad' feature for 'ZHT' and the 74ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // 'smpl' feature for 'ZHS'? If we do this, we can remove the exact 75ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // flag from the language tag lookups, so we can use these features 76ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru // with the default LangSys... 77ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru for (le_int32 i = 0; i < count; i += 1) { 78ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru glyphStorage.setAuxData(i, features, success); 79ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 80ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 81ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return count; 82ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 83ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 84ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruU_NAMESPACE_END 85