| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved |
| * |
| */ |
| |
| #ifndef __ARABICSHAPING_H |
| #define __ARABICSHAPING_H |
| |
| /** |
| * \file |
| * \internal |
| */ |
| |
| #include "LETypes.h" |
| #include "OpenTypeTables.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| class LEGlyphStorage; |
| |
| class ArabicShaping /* not : public UObject because all methods are static */ { |
| public: |
| // Joining types |
| enum JoiningTypes |
| { |
| JT_NON_JOINING = 0, |
| JT_JOIN_CAUSING = 1, |
| JT_DUAL_JOINING = 2, |
| JT_LEFT_JOINING = 3, |
| JT_RIGHT_JOINING = 4, |
| JT_TRANSPARENT = 5, |
| JT_COUNT = 6 |
| }; |
| |
| // shaping bit masks |
| enum ShapingBitMasks |
| { |
| MASK_SHAPE_RIGHT = 1, // if this bit set, shapes to right |
| MASK_SHAPE_LEFT = 2, // if this bit set, shapes to left |
| MASK_TRANSPARENT = 4, // if this bit set, is transparent (ignore other bits) |
| MASK_NOSHAPE = 8 // if this bit set, don't shape this char, i.e. tatweel |
| }; |
| |
| // shaping values |
| enum ShapeTypeValues |
| { |
| ST_NONE = 0, |
| ST_RIGHT = MASK_SHAPE_RIGHT, |
| ST_LEFT = MASK_SHAPE_LEFT, |
| ST_DUAL = MASK_SHAPE_RIGHT | MASK_SHAPE_LEFT, |
| ST_TRANSPARENT = MASK_TRANSPARENT, |
| ST_NOSHAPE_DUAL = MASK_NOSHAPE | ST_DUAL, |
| ST_NOSHAPE_NONE = MASK_NOSHAPE |
| }; |
| |
| typedef le_int32 ShapeType; |
| |
| static void shape(const LEUnicode *chars, le_int32 offset, le_int32 charCount, le_int32 charMax, |
| le_bool rightToLeft, LEGlyphStorage &glyphStorage); |
| |
| static const FeatureMap *getFeatureMap(le_int32 &count); |
| |
| private: |
| // forbid instantiation |
| ArabicShaping(); |
| |
| static ShapeType getShapeType(LEUnicode c); |
| |
| static const le_uint8 shapingTypeTable[]; |
| static const size_t shapingTypeTableLen; |
| |
| static const ShapeType shapeTypes[]; |
| |
| static void adjustTags(le_int32 outIndex, le_int32 shapeOffset, LEGlyphStorage &glyphStorage); |
| }; |
| |
| U_NAMESPACE_END |
| #endif |