1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/textandloc/fontservices/textshaperplugin/IcuSource/layout/HanLayoutEngine.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,71 @@
     1.4 +/*
     1.5 + * HanLayoutEngine.cpp: OpenType processing for Han fonts.
     1.6 + *
     1.7 + * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved.
     1.8 + */
     1.9 +
    1.10 +#include "LETypes.h"
    1.11 +#include "LEScripts.h"
    1.12 +#include "LELanguages.h"
    1.13 +
    1.14 +#include "LayoutEngine.h"
    1.15 +#include "OpenTypeLayoutEngine.h"
    1.16 +#include "HanLayoutEngine.h"
    1.17 +#include "ScriptAndLanguageTags.h"
    1.18 +#include "LEGlyphStorage.h"
    1.19 +
    1.20 +U_NAMESPACE_BEGIN
    1.21 +
    1.22 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HanOpenTypeLayoutEngine)
    1.23 +
    1.24 +HanOpenTypeLayoutEngine::HanOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode,
    1.25 +                        le_int32 typoFlags, const GlyphSubstitutionTableHeader *gsubTable)
    1.26 +    : OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable)
    1.27 +{
    1.28 +    // nothing else to do...
    1.29 +}
    1.30 +
    1.31 +HanOpenTypeLayoutEngine::~HanOpenTypeLayoutEngine()
    1.32 +{
    1.33 +    // nothing to do
    1.34 +}
    1.35 +
    1.36 +static const LETag emptyTag = 0x00000000;
    1.37 +
    1.38 +static const LETag loclFeatureTag = LE_LOCL_FEATURE_TAG;
    1.39 +static const LETag smplFeatureTag = LE_SMPL_FEATURE_TAG;
    1.40 +static const LETag tradFeatureTag = LE_TRAD_FEATURE_TAG;
    1.41 +
    1.42 +static const LETag features[] = {loclFeatureTag, emptyTag};
    1.43 +
    1.44 +le_int32 HanOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool /*rightToLeft*/,
    1.45 +        LEUnicode *&/*outChars*/, LEGlyphStorage &glyphStorage, LEErrorCode &success)
    1.46 +{
    1.47 +    if (LE_FAILURE(success)) {
    1.48 +        return 0;
    1.49 +    }
    1.50 +
    1.51 +    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
    1.52 +        success = LE_ILLEGAL_ARGUMENT_ERROR;
    1.53 +        return 0;
    1.54 +    }
    1.55 +
    1.56 +    glyphStorage.allocateGlyphArray(count, FALSE, success);
    1.57 +    glyphStorage.allocateAuxData(success);
    1.58 +
    1.59 +    if (LE_FAILURE(success)) {
    1.60 +        return 0;
    1.61 +    }
    1.62 +
    1.63 +    // FIXME: do we want to add the 'trad' feature for 'ZHT' and the
    1.64 +    // 'smpl' feature for 'ZHS'? If we do this, we can remove the exact
    1.65 +    // flag from the language tag lookups, so we can use these features
    1.66 +    // with the default LangSys...
    1.67 +    for (le_int32 i = 0; i < count; i += 1) {
    1.68 +        glyphStorage.setAuxData(i, (void *) features, success);
    1.69 +    }
    1.70 +
    1.71 +    return count;
    1.72 +}
    1.73 +
    1.74 +U_NAMESPACE_END