1 2 /* 3 * 4 * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved 5 * 6 */ 7 8 #include "LETypes.h" 9 #include "LayoutEngine.h" 10 #include "GXLayoutEngine.h" 11 #include "LEGlyphStorage.h" 12 13 #include "MorphTables.h" 14 15 U_NAMESPACE_BEGIN 16 17 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine) 18 19 GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const MorphTableHeader *morphTable, LEErrorCode &success) 20 : LayoutEngine(fontInstance, scriptCode, languageCode, 0, success), fMorphTable(morphTable) 21 { 22 // nothing else to do? 23 } 24 25 GXLayoutEngine::~GXLayoutEngine() 26 { 27 reset(); 28 } 29 30 // apply 'mort' table 31 le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success) 32 { 33 if (LE_FAILURE(success)) { 34 return 0; 35 } 36 37 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { 38 success = LE_ILLEGAL_ARGUMENT_ERROR; 39 return 0; 40 } 41 42 mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success); 43 44 if (LE_FAILURE(success)) { 45 return 0; 46 } 47 48 fMorphTable->process(glyphStorage); 49 50 return count; 51 } 52 53 // apply positional tables 54 void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, 55 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success) 56 { 57 if (LE_FAILURE(success)) { 58 return; 59 } 60 61 if (chars == NULL || offset < 0 || count < 0) { 62 success = LE_ILLEGAL_ARGUMENT_ERROR; 63 return; 64 } 65 66 // FIXME: no positional processing yet... 67 } 68 69 U_NAMESPACE_END 70
