1/* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 27/* 28 * 29 * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved 30 * 31 */ 32 33#include "LETypes.h" 34#include "LayoutEngine.h" 35#include "GXLayoutEngine.h" 36#include "LEGlyphStorage.h" 37 38#include "MorphTables.h" 39 40U_NAMESPACE_BEGIN 41 42UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine) 43 44 GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader> &morphTable, LEErrorCode &success) 45 : LayoutEngine(fontInstance, scriptCode, languageCode, 0, success), fMorphTable(morphTable) 46{ 47 fMorphTable.orphan(); 48 // nothing else to do? 49} 50 51GXLayoutEngine::~GXLayoutEngine() 52{ 53 reset(); 54} 55 56// apply 'mort' table 57le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success) 58{ 59 if (LE_FAILURE(success)) { 60 return 0; 61 } 62 63 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { 64 success = LE_ILLEGAL_ARGUMENT_ERROR; 65 return 0; 66 } 67 68 mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success); 69 70 if (LE_FAILURE(success)) { 71 return 0; 72 } 73 74 fMorphTable->process(fMorphTable, glyphStorage, success); 75 76 return glyphStorage.getGlyphCount(); 77} 78 79// apply positional tables 80void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, 81 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success) 82{ 83 if (LE_FAILURE(success)) { 84 return; 85 } 86 87 if (chars == NULL || offset < 0 || count < 0) { 88 success = LE_ILLEGAL_ARGUMENT_ERROR; 89 return; 90 } 91 92 // FIXME: no positional processing yet... 93} 94 95U_NAMESPACE_END 96