71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
|
|
/*
|
|
*
|
|
* (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
|
|
*
|
|
*/
|
|
|
|
#include "LETypes.h"
|
|
#include "LayoutEngine.h"
|
|
#include "GXLayoutEngine.h"
|
|
#include "LEGlyphStorage.h"
|
|
|
|
#include "MorphTables.h"
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine)
|
|
|
|
GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader> &morphTable, LEErrorCode &success)
|
|
: LayoutEngine(fontInstance, scriptCode, languageCode, 0, success), fMorphTable(morphTable)
|
|
{
|
|
fMorphTable.orphan();
|
|
// nothing else to do?
|
|
}
|
|
|
|
GXLayoutEngine::~GXLayoutEngine()
|
|
{
|
|
reset();
|
|
}
|
|
|
|
// apply 'mort' table
|
|
le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
|
|
{
|
|
if (LE_FAILURE(success)) {
|
|
return 0;
|
|
}
|
|
|
|
if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
|
|
success = LE_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success);
|
|
|
|
if (LE_FAILURE(success)) {
|
|
return 0;
|
|
}
|
|
|
|
fMorphTable->process(fMorphTable, glyphStorage, success);
|
|
|
|
return count;
|
|
}
|
|
|
|
// apply positional tables
|
|
void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
|
|
LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
|
|
{
|
|
if (LE_FAILURE(success)) {
|
|
return;
|
|
}
|
|
|
|
if (chars == NULL || offset < 0 || count < 0) {
|
|
success = LE_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
|
|
// FIXME: no positional processing yet...
|
|
}
|
|
|
|
U_NAMESPACE_END
|