1 2/* 3 * 4 * (C) Copyright IBM Corp. 1998-2013 - 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 15U_NAMESPACE_BEGIN 16 17UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine) 18 19 GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader> &morphTable, LEErrorCode &success) 20 : LayoutEngine(fontInstance, scriptCode, languageCode, 0, success), fMorphTable(morphTable) 21{ 22 fMorphTable.orphan(); 23 // nothing else to do? 24} 25 26GXLayoutEngine::~GXLayoutEngine() 27{ 28 reset(); 29} 30 31// apply 'mort' table 32le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success) 33{ 34 if (LE_FAILURE(success)) { 35 return 0; 36 } 37 38 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { 39 success = LE_ILLEGAL_ARGUMENT_ERROR; 40 return 0; 41 } 42 43 mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success); 44 45 if (LE_FAILURE(success)) { 46 return 0; 47 } 48 49 fMorphTable->process(fMorphTable, glyphStorage, success); 50 51 return count; 52} 53 54// apply positional tables 55void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, 56 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success) 57{ 58 if (LE_FAILURE(success)) { 59 return; 60 } 61 62 if (chars == NULL || offset < 0 || count < 0) { 63 success = LE_ILLEGAL_ARGUMENT_ERROR; 64 return; 65 } 66 67 // FIXME: no positional processing yet... 68} 69 70U_NAMESPACE_END 71