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 * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved
29 *
30 */
31
32 #include "LETypes.h"
33 #include "LayoutEngine.h"
34 #include "GXLayoutEngine2.h"
35 #include "LEGlyphStorage.h"
36 #include "MorphTables.h"
37
38 U_NAMESPACE_BEGIN
39
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)40 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)
41
42 GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader2> &morphTable, le_int32 typoFlags, LEErrorCode &success)
43 : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable)
44 {
45 // nothing else to do?
46 }
47
~GXLayoutEngine2()48 GXLayoutEngine2::~GXLayoutEngine2()
49 {
50 reset();
51 }
52
53 // apply 'morx' table
computeGlyphs(const LEUnicode chars[],le_int32 offset,le_int32 count,le_int32 max,le_bool rightToLeft,LEGlyphStorage & glyphStorage,LEErrorCode & success)54 le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
55 {
56 if (LE_FAILURE(success)) {
57 return 0;
58 }
59
60 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
61 success = LE_ILLEGAL_ARGUMENT_ERROR;
62 return 0;
63 }
64
65 mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success);
66
67 if (LE_FAILURE(success)) {
68 return 0;
69 }
70
71 fMorphTable->process(fMorphTable, glyphStorage, fTypoFlags, success);
72 return glyphStorage.getGlyphCount();
73 }
74
75 // apply positional tables
adjustGlyphPositions(const LEUnicode chars[],le_int32 offset,le_int32 count,le_bool,LEGlyphStorage &,LEErrorCode & success)76 void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
77 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
78 {
79 if (LE_FAILURE(success)) {
80 return;
81 }
82
83 if (chars == NULL || offset < 0 || count < 0) {
84 success = LE_ILLEGAL_ARGUMENT_ERROR;
85 return;
86 }
87
88 // FIXME: no positional processing yet...
89 }
90
91 U_NAMESPACE_END
92