|
sl@0
|
1 |
|
|
sl@0
|
2 |
/*
|
|
sl@0
|
3 |
*
|
|
sl@0
|
4 |
* (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
|
|
sl@0
|
5 |
*
|
|
sl@0
|
6 |
*/
|
|
sl@0
|
7 |
|
|
sl@0
|
8 |
#include "LETypes.h"
|
|
sl@0
|
9 |
#include "LayoutEngine.h"
|
|
sl@0
|
10 |
#include "GXLayoutEngine.h"
|
|
sl@0
|
11 |
#include "LEGlyphStorage.h"
|
|
sl@0
|
12 |
|
|
sl@0
|
13 |
#include "MorphTables.h"
|
|
sl@0
|
14 |
|
|
sl@0
|
15 |
U_NAMESPACE_BEGIN
|
|
sl@0
|
16 |
|
|
sl@0
|
17 |
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine)
|
|
sl@0
|
18 |
|
|
sl@0
|
19 |
GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const MorphTableHeader *morphTable)
|
|
sl@0
|
20 |
: LayoutEngine(fontInstance, scriptCode, languageCode, 0), fMorphTable(morphTable)
|
|
sl@0
|
21 |
{
|
|
sl@0
|
22 |
// nothing else to do?
|
|
sl@0
|
23 |
}
|
|
sl@0
|
24 |
|
|
sl@0
|
25 |
GXLayoutEngine::~GXLayoutEngine()
|
|
sl@0
|
26 |
{
|
|
sl@0
|
27 |
reset();
|
|
sl@0
|
28 |
}
|
|
sl@0
|
29 |
|
|
sl@0
|
30 |
// apply 'mort' table
|
|
sl@0
|
31 |
le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
|
|
sl@0
|
32 |
{
|
|
sl@0
|
33 |
if (LE_FAILURE(success)) {
|
|
sl@0
|
34 |
return 0;
|
|
sl@0
|
35 |
}
|
|
sl@0
|
36 |
|
|
sl@0
|
37 |
if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
|
|
sl@0
|
38 |
success = LE_ILLEGAL_ARGUMENT_ERROR;
|
|
sl@0
|
39 |
return 0;
|
|
sl@0
|
40 |
}
|
|
sl@0
|
41 |
|
|
sl@0
|
42 |
mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success);
|
|
sl@0
|
43 |
|
|
sl@0
|
44 |
if (LE_FAILURE(success)) {
|
|
sl@0
|
45 |
return 0;
|
|
sl@0
|
46 |
}
|
|
sl@0
|
47 |
|
|
sl@0
|
48 |
fMorphTable->process(glyphStorage);
|
|
sl@0
|
49 |
|
|
sl@0
|
50 |
return count;
|
|
sl@0
|
51 |
}
|
|
sl@0
|
52 |
|
|
sl@0
|
53 |
// apply positional tables
|
|
sl@0
|
54 |
void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
|
|
sl@0
|
55 |
LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
|
|
sl@0
|
56 |
{
|
|
sl@0
|
57 |
if (LE_FAILURE(success)) {
|
|
sl@0
|
58 |
return;
|
|
sl@0
|
59 |
}
|
|
sl@0
|
60 |
|
|
sl@0
|
61 |
if (chars == NULL || offset < 0 || count < 0) {
|
|
sl@0
|
62 |
success = LE_ILLEGAL_ARGUMENT_ERROR;
|
|
sl@0
|
63 |
return;
|
|
sl@0
|
64 |
}
|
|
sl@0
|
65 |
|
|
sl@0
|
66 |
// FIXME: no positional processing yet...
|
|
sl@0
|
67 |
}
|
|
sl@0
|
68 |
|
|
sl@0
|
69 |
U_NAMESPACE_END
|