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 15U_NAMESPACE_BEGIN 16 17UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine) 18 19GXLayoutEngine::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 25GXLayoutEngine::~GXLayoutEngine() 26{ 27 reset(); 28} 29 30// apply 'mort' table 31le_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 54void 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 69U_NAMESPACE_END 70