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Diffstat (limited to 'Build/source/texk/web2c/xetexdir/XeTeXOTLayoutEngine.cpp')
| -rw-r--r-- | Build/source/texk/web2c/xetexdir/XeTeXOTLayoutEngine.cpp | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/Build/source/texk/web2c/xetexdir/XeTeXOTLayoutEngine.cpp b/Build/source/texk/web2c/xetexdir/XeTeXOTLayoutEngine.cpp deleted file mode 100644 index 3194bda18ce..00000000000 --- a/Build/source/texk/web2c/xetexdir/XeTeXOTLayoutEngine.cpp +++ /dev/null @@ -1,378 +0,0 @@ -/****************************************************************************\ - Part of the XeTeX typesetting system - copyright (c) 1994-2008 by SIL International - copyright (c) 2009, 2011 by Jonathan Kew - - Written by Jonathan Kew - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE -FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF -CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of the copyright holders -shall not be used in advertising or otherwise to promote the sale, -use or other dealings in this Software without prior written -authorization from the copyright holders. -\****************************************************************************/ - -#include "XeTeXOTLayoutEngine.h" - -/****************************************************************************\ -class XeTeXHanLayoutEngine - moved from XeTeXOTLayoutEngine.h to here in order not to include it into - XeTeXLayoutInterface.cpp. -\****************************************************************************/ -class XeTeXHanLayoutEngine : public XeTeXOTLayoutEngine -{ -public: - XeTeXHanLayoutEngine(const XeTeXFontInst *fontInstance, LETag scriptTag, LETag languageTag, - const GlyphSubstitutionTableHeader *gsubTable, - const GlyphPositioningTableHeader* gposTable, - const LETag* addFeatures, const le_int32* addParams, - const LETag* removeFeatures, LEErrorCode &success); - - virtual ~XeTeXHanLayoutEngine(); - - virtual UClassID getDynamicClassID() const; - static UClassID getStaticClassID(); -}; - -#include "layout/ArabicLayoutEngine.h" -#include "layout/IndicLayoutEngine.h" -#include "layout/TibetanLayoutEngine.h" -#include "layout/ThaiLayoutEngine.h" -#include "layout/KhmerLayoutEngine.h" - -#include "layout/LEScripts.h" -#include "layout/LELanguages.h" - -const LETag emptyTag = 0x00000000; - -static le_int32 getScriptCode(LETag scriptTag) -{ - for (le_int32 i = 0; i < scriptCodeCount; ++i) - if (OpenTypeLayoutEngine::getScriptTag(i) == scriptTag) - return i; - return -1; -} - -static le_int32 getLanguageCode(LETag languageTag) -{ - for (le_int32 i = 0; i < languageCodeCount; ++i) - if (OpenTypeLayoutEngine::getLangSysTag(i) == languageTag) - return i; - return -1; -} - -/* - * XeTeXOTLayoutEngine - */ - -UOBJECT_DEFINE_RTTI_IMPLEMENTATION(XeTeXOTLayoutEngine) - -LayoutEngine* XeTeXOTLayoutEngine::LayoutEngineFactory - (const XeTeXFontInst* fontInstance, - LETag scriptTag, LETag languageTag, - const LETag* addFeatures, const le_int32* addParams, - const LETag* removeFeatures, - LEErrorCode &success) -{ - static le_uint32 gsubTableTag = LE_GSUB_TABLE_TAG; - static le_uint32 gposTableTag = LE_GPOS_TABLE_TAG; - - if (LE_FAILURE(success)) - return NULL; - - const GlyphSubstitutionTableHeader* gsubTable = (const GlyphSubstitutionTableHeader*)fontInstance->getFontTable(gsubTableTag); - const GlyphPositioningTableHeader* gposTable = (const GlyphPositioningTableHeader*)fontInstance->getFontTable(gposTableTag); - LayoutEngine *result = NULL; - - le_uint32 scriptCode = getScriptCode(scriptTag); - le_uint32 languageCode = getLanguageCode(languageTag); - - le_int32 typoFlags = 3; - - if ((gsubTable != NULL && gsubTable->coversScript(scriptTag)) - || (gposTable != NULL && gposTable->coversScript(scriptTag))) { - switch (scriptCode) { - case bengScriptCode: - case devaScriptCode: - case gujrScriptCode: - case kndaScriptCode: - case mlymScriptCode: - case oryaScriptCode: - case guruScriptCode: - case tamlScriptCode: - case teluScriptCode: - case sinhScriptCode: -// result = new XeTeXIndicLayoutEngine(fontInstance, scriptTag, languageTag, gsubTable, addFeatures, removeFeatures); - result = new IndicOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, FALSE, gsubTable, success); - break; - - case arabScriptCode: - case syrcScriptCode: - case mongScriptCode: -// result = new XeTeXArabicLayoutEngine(fontInstance, scriptTag, languageTag, gsubTable, addFeatures, removeFeatures); - result = new ArabicOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable, success); - break; - - case bopoScriptCode: - case haniScriptCode: - case hangScriptCode: - case hiraScriptCode: - case kanaScriptCode: - case hrktScriptCode: - result = new XeTeXHanLayoutEngine(fontInstance, scriptTag, languageTag, gsubTable, gposTable, addFeatures, addParams, removeFeatures, success); - break; - - case tibtScriptCode: - result = new TibetanOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable, success); - break; - - case khmrScriptCode: - result = new KhmerOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable, success); - break; - - default: - result = new XeTeXOTLayoutEngine(fontInstance, scriptTag, languageTag, gsubTable, gposTable, addFeatures, addParams, removeFeatures, success); - break; - } - } - else { - switch (scriptCode) { - case bengScriptCode: - case devaScriptCode: - case gujrScriptCode: - case kndaScriptCode: - case mlymScriptCode: - case oryaScriptCode: - case guruScriptCode: - case tamlScriptCode: - case teluScriptCode: - case sinhScriptCode: - result = new IndicOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success); - break; - - case arabScriptCode: -// case hebrScriptCode: - result = new UnicodeArabicOpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success); - break; - - case thaiScriptCode: - result = new ThaiLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success); - break; - - default: - result = new OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success); - break; - } - } - - if (LE_FAILURE(success)) - return NULL; - - return result; -} - -XeTeXOTLayoutEngine::XeTeXOTLayoutEngine( - const LEFontInstance* fontInstance, LETag scriptTag, LETag languageTag, - const GlyphSubstitutionTableHeader* gsubTable, const GlyphPositioningTableHeader* gposTable, - const LETag* addFeatures, const le_int32* addParams, const LETag* removeFeatures, LEErrorCode &success) - : OpenTypeLayoutEngine(fontInstance, getScriptCode(scriptTag), getLanguageCode(languageTag), 3, gsubTable, success) -{ - fDefaultFeatureMap = fFeatureMap; - - // check the result of setScriptAndLanguageTags(), in case they were unknown to ICU - if (fScriptTag != scriptTag || fLangSysTag != languageTag) { - fScriptTag = scriptTag; - fLangSysTag = languageTag; - - // reset the GPOS if the tags changed - fGPOSTable = NULL; - if (gposTable != NULL && gposTable->coversScriptAndLanguage(fScriptTag, fLangSysTag)) { - fGPOSTable = gposTable; - } - } - - adjustFeatures(addFeatures, addParams, removeFeatures); -} - -XeTeXOTLayoutEngine::~XeTeXOTLayoutEngine() -{ - if (fFeatureMap != NULL && fFeatureMap != fDefaultFeatureMap) - LE_DELETE_ARRAY(fFeatureMap); - if (fFeatureParamList != NULL) - LE_DELETE_ARRAY(fFeatureParamList); -} - -void XeTeXOTLayoutEngine::adjustFeatures(const LETag* addTags, const le_int32* addParams, const LETag* removeTags) -{ - // bail out if nothing was requested! - if ((addTags == NULL || *addTags == emptyTag) && (removeTags == NULL || *removeTags == emptyTag)) - return; - - // figure out total tag count: initial set - removed tags + added tags omitting duplicates - le_int32 totalCount = 0; - for (le_int32 i = 0; i < fFeatureMapCount; ++i) { - // skip any that are disabled by the mask - if ((fFeatureMask & fFeatureMap[i].mask) != 0) { - bool remove = false; - for (const LETag* r = removeTags; r != NULL && *r != emptyTag; ++r) - if (*r == fFeatureMap[i].tag) { - remove = true; - break; - } - if (!remove) - ++totalCount; - } - } - for (const LETag* a = addTags; a != NULL && *a != emptyTag; ++a) { - // before counting an add tag, check original map, and check for duplicates in list - bool add = true; - for (le_int32 i = 0; i < fFeatureMapCount; ++i) - if (*a == fFeatureMap[i].tag) { - if ((fFeatureMask & fFeatureMap[i].mask) != 0) - add = false; - break; - } - if (add) { - for (const LETag* t = addTags; t != a; ++t) - if (*a == *t) { - add = false; - break; - } - } - if (add) - ++totalCount; - } - - if (totalCount > 32) - fprintf(stderr, "\n*** feature count exceeds mask size; some features will be ignored\n"); - - // allocate new map - FeatureMap* newFeatureMap = LE_NEW_ARRAY(FeatureMap, totalCount); - le_int32 newFeatureCount = 0; - le_int32* newParamList = (addParams == NULL) ? NULL : LE_NEW_ARRAY(le_int32, totalCount); - - // copy the features into the map and assign mask bits - FeatureMask newFeatureMask = 0; - FeatureMask maskBit = 0x80000000UL; - for (le_int32 i = 0; i < fFeatureMapCount; ++i) { - bool remove = false; - if ((fFeatureMask & fFeatureMap[i].mask) == 0) - remove = true; - else - for (const LETag* r = removeTags; r != NULL && *r != emptyTag; ++r) - if (*r == fFeatureMap[i].tag) { - remove = true; - break; - } - if (!remove) { - newFeatureMap[newFeatureCount].tag = fFeatureMap[i].tag; - newFeatureMap[newFeatureCount].mask = maskBit; - if (newParamList != NULL) - newParamList[newFeatureCount] = 0; - ++newFeatureCount; - newFeatureMask |= maskBit; - maskBit >>= 1; - } - } - const le_int32* param = addParams; - for (const LETag* a = addTags; a != NULL && *a != emptyTag; ++a) { - bool add = true; - for (le_int32 i = 0; i < fFeatureMapCount; ++i) - if (*a == fFeatureMap[i].tag) { - if ((fFeatureMask & fFeatureMap[i].mask) != 0) - add = false; - break; - } - if (add) { - for (const LETag* t = addTags; t != a; ++t) - if (*a == *t) { - add = false; - break; - } - } - if (add) { - newFeatureMap[newFeatureCount].tag = *a; - newFeatureMap[newFeatureCount].mask = maskBit; - if (newParamList != NULL) - newParamList[newFeatureCount] = *param++; - ++newFeatureCount; - newFeatureMask |= maskBit; - maskBit >>= 1; - } - } - - fFeatureMask = newFeatureMask; - fFeatureMap = newFeatureMap; - fFeatureMapCount = newFeatureCount; - fFeatureParamList = newParamList; -} - - -/* - * XeTeXHanLayoutEngine - */ - -UOBJECT_DEFINE_RTTI_IMPLEMENTATION(XeTeXHanLayoutEngine) - -static const LETag loclFeatureTag = LE_LOCL_FEATURE_TAG; -static const LETag smplFeatureTag = LE_SMPL_FEATURE_TAG; -static const LETag tradFeatureTag = LE_TRAD_FEATURE_TAG; -static const LETag vertFeatureTag = LE_VERT_FEATURE_TAG; -static const LETag vrt2FeatureTag = LE_VRT2_FEATURE_TAG; - -#define loclFeatureMask 0x80000000UL -#define smplFeatureMask 0x40000000UL -#define tradFeatureMask 0x20000000UL -#define vertFeatureMask 0x10000000UL -#define vrt2FeatureMask 0x08000000UL - -static const FeatureMap featureMap[] = { - {loclFeatureTag, loclFeatureMask}, - {smplFeatureTag, smplFeatureMask}, - {tradFeatureTag, tradFeatureMask}, - {vertFeatureTag, vertFeatureMask}, - {vrt2FeatureTag, vrt2FeatureMask}, -}; -static const le_int32 featureMapCount = LE_ARRAY_SIZE(featureMap); - -#define HORIZ_FEATURES (loclFeatureMask) -#define VERT_FEATURES (loclFeatureMask|vertFeatureMask|vrt2FeatureMask) - -XeTeXHanLayoutEngine::XeTeXHanLayoutEngine(const XeTeXFontInst *fontInstance, LETag scriptTag, LETag languageTag, - const GlyphSubstitutionTableHeader *gsubTable, const GlyphPositioningTableHeader *gposTable, - const LETag *addFeatures, const le_int32* addParams, - const LETag *removeFeatures, LEErrorCode &success) - : XeTeXOTLayoutEngine(fontInstance, scriptTag, languageTag, gsubTable, gposTable, NULL, NULL, NULL, success) -{ - // reset the feature map and default features - fFeatureMap = featureMap; - fDefaultFeatureMap = fFeatureMap; - fFeatureMapCount = featureMapCount; - - fFeatureMask = fontInstance->getLayoutDirVertical() ? VERT_FEATURES : HORIZ_FEATURES; - - // then apply any adjustments - adjustFeatures(addFeatures, addParams, removeFeatures); -} - -XeTeXHanLayoutEngine::~XeTeXHanLayoutEngine() -{ -} |