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author | Peter Breitenlohner <peb@mppmu.mpg.de> | 2012-10-26 07:13:09 +0000 |
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committer | Peter Breitenlohner <peb@mppmu.mpg.de> | 2012-10-26 07:13:09 +0000 |
commit | 74cc05c672add53f566ac385f117008e8c4b3eda (patch) | |
tree | ce973a7d2e4814a20d52a55b1a2131d1515e9911 /Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp | |
parent | 6439fb8917718c4d620170e1459a1d9e7ab3c441 (diff) |
icu 50.1 (50_rc)
git-svn-id: svn://tug.org/texlive/trunk@28087 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp')
-rw-r--r-- | Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp b/Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp new file mode 100644 index 00000000000..31dc8187c43 --- /dev/null +++ b/Build/source/libs/icu/icu-50.1/layout/HanLayoutEngine.cpp @@ -0,0 +1,84 @@ +/* + * HanLayoutEngine.cpp: OpenType processing for Han fonts. + * + * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved. + */ + +#include "LETypes.h" +#include "LEScripts.h" +#include "LELanguages.h" + +#include "LayoutEngine.h" +#include "OpenTypeLayoutEngine.h" +#include "HanLayoutEngine.h" +#include "ScriptAndLanguageTags.h" +#include "LEGlyphStorage.h" +#include "OpenTypeTables.h" + +U_NAMESPACE_BEGIN + +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HanOpenTypeLayoutEngine) + +#define loclFeatureTag LE_LOCL_FEATURE_TAG +#define smplFeatureTag LE_SMPL_FEATURE_TAG +#define tradFeatureTag LE_TRAD_FEATURE_TAG + +#define loclFeatureMask 0x80000000UL +#define smplFeatureMask 0x40000000UL +#define tradFeatureMask 0x20000000UL + +static const FeatureMap featureMap[] = +{ + {loclFeatureTag, loclFeatureMask}, + {smplFeatureTag, smplFeatureMask}, + {tradFeatureTag, tradFeatureMask} +}; + +static const le_int32 featureMapCount = LE_ARRAY_SIZE(featureMap); + +#define features (loclFeatureMask) + +HanOpenTypeLayoutEngine::HanOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, + le_int32 typoFlags, const GlyphSubstitutionTableHeader *gsubTable, LEErrorCode &success) + : OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable, success) +{ + fFeatureMap = featureMap; + fFeatureMapCount = featureMapCount; +} + +HanOpenTypeLayoutEngine::~HanOpenTypeLayoutEngine() +{ + // nothing to do +} + +le_int32 HanOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool /*rightToLeft*/, + LEUnicode *&/*outChars*/, 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; + } + + glyphStorage.allocateGlyphArray(count, FALSE, success); + glyphStorage.allocateAuxData(success); + + if (LE_FAILURE(success)) { + return 0; + } + + // FIXME: do we want to add the 'trad' feature for 'ZHT' and the + // 'smpl' feature for 'ZHS'? If we do this, we can remove the exact + // flag from the language tag lookups, so we can use these features + // with the default LangSys... + for (le_int32 i = 0; i < count; i += 1) { + glyphStorage.setAuxData(i, features, success); + } + + return count; +} + +U_NAMESPACE_END |