1 /*
2 *
3 * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved
4 *
5 */
6
7 #include "LETypes.h"
8 #include "LayoutEngine.h"
9 #include "GXLayoutEngine2.h"
10 #include "LEGlyphStorage.h"
11 #include "MorphTables.h"
12
13 U_NAMESPACE_BEGIN
14
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)15 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)
16
17 GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader2> &morphTable, le_int32 typoFlags, LEErrorCode &success)
18 : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable)
19 {
20 // nothing else to do?
21 }
22
~GXLayoutEngine2()23 GXLayoutEngine2::~GXLayoutEngine2()
24 {
25 reset();
26 }
27
28 // apply 'morx' table
computeGlyphs(const LEUnicode chars[],le_int32 offset,le_int32 count,le_int32 max,le_bool rightToLeft,LEGlyphStorage & glyphStorage,LEErrorCode & success)29 le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
30 {
31 if (LE_FAILURE(success)) {
32 return 0;
33 }
34
35 if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
36 success = LE_ILLEGAL_ARGUMENT_ERROR;
37 return 0;
38 }
39
40 mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success);
41
42 if (LE_FAILURE(success)) {
43 return 0;
44 }
45
46 fMorphTable->process(fMorphTable, glyphStorage, fTypoFlags, success);
47 return count;
48 }
49
50 // apply positional tables
adjustGlyphPositions(const LEUnicode chars[],le_int32 offset,le_int32 count,le_bool,LEGlyphStorage &,LEErrorCode & success)51 void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
52 LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
53 {
54 if (LE_FAILURE(success)) {
55 return;
56 }
57
58 if (chars == NULL || offset < 0 || count < 0) {
59 success = LE_ILLEGAL_ARGUMENT_ERROR;
60 return;
61 }
62
63 // FIXME: no positional processing yet...
64 }
65
66 U_NAMESPACE_END
67