1 /* 2 * 3 * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved 4 * 5 */ 6 7 #include "LETypes.h" 8 #include "LayoutEngine.h" 9 #include "GXLayoutEngine2.h" 10 #include "LEGlyphStorage.h" 11 #include "MorphTables.h" 12 13 U_NAMESPACE_BEGIN 14 15 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2) 16 17 GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const MorphTableHeader2 *morphTable, le_int32 typoFlags, LEErrorCode &success) 18 : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable) 19 { 20 // nothing else to do? 21 } 22 23 GXLayoutEngine2::~GXLayoutEngine2() 24 { 25 reset(); 26 } 27 28 // apply 'morx' table 29 le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success) 30 { 31 if (LE_FAILURE(success)) { 32 return 0; 33 } 34 35 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { 36 success = LE_ILLEGAL_ARGUMENT_ERROR; 37 return 0; 38 } 39 40 mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success); 41 42 if (LE_FAILURE(success)) { 43 return 0; 44 } 45 46 fMorphTable->process(glyphStorage, fTypoFlags); 47 return count; 48 } 49 50 // apply positional tables 51 void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, 52 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success) 53 { 54 if (LE_FAILURE(success)) { 55 return; 56 } 57 58 if (chars == NULL || offset < 0 || count < 0) { 59 success = LE_ILLEGAL_ARGUMENT_ERROR; 60 return; 61 } 62 63 // FIXME: no positional processing yet... 64 } 65 66 U_NAMESPACE_END 67
