HanLayoutEngine.cpp [plain text]
#include "LETypes.h"
#include "LEScripts.h"
#include "LELanguages.h"
#include "LayoutEngine.h"
#include "OpenTypeLayoutEngine.h"
#include "HanLayoutEngine.h"
#include "ScriptAndLanguageTags.h"
const char HanOpenTypeLayoutEngine::fgClassID=0;
HanOpenTypeLayoutEngine::HanOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode,
const GlyphSubstitutionTableHeader *gsubTable)
: OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, gsubTable)
{
}
HanOpenTypeLayoutEngine::~HanOpenTypeLayoutEngine()
{
}
const LETag emptyTag = 0x00000000;
const LETag loclFeatureTag = LE_LOCL_FEATURE_TAG;
const LETag smplFeatureTag = LE_SMPL_FEATURE_TAG;
const LETag tradFeatureTag = LE_TRAD_FEATURE_TAG;
const LETag features[] = {loclFeatureTag, emptyTag};
le_int32 HanOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool ,
LEUnicode *&, le_int32 *&, const LETag **&featureTags, 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;
}
featureTags = LE_NEW_ARRAY(const LETag *, count);
if (featureTags == NULL) {
success = LE_MEMORY_ALLOCATION_ERROR;
return 0;
}
for (le_int32 i = 0; i < count; i += 1) {
featureTags[i] = features;
}
return count;
}