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