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Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqscriptengine_x11.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/kernel/tqscriptengine_x11.cpp | 3752 |
1 files changed, 0 insertions, 3752 deletions
diff --git a/tqtinterface/qt4/src/kernel/tqscriptengine_x11.cpp b/tqtinterface/qt4/src/kernel/tqscriptengine_x11.cpp deleted file mode 100644 index d42b8d2..0000000 --- a/tqtinterface/qt4/src/kernel/tqscriptengine_x11.cpp +++ /dev/null @@ -1,3752 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2003-2008 Trolltech ASA. All rights reserved. -** -** This file is part of the kernel module of the TQt GUI Toolkit. -** -** This file may be used under the terms of the GNU General -** Public License versions 2.0 or 3.0 as published by the Free -** Software Foundation and appearing in the files LICENSE.GPL2 -** and LICENSE.GPL3 included in the packaging of this file. -** Alternatively you may (at your option) use any later version -** of the GNU General Public License if such license has been -** publicly approved by Trolltech ASA (or its successors, if any) -** and the KDE Free TQt Foundation. -** -** Please review the following information to ensure GNU General -** Public Licensing requirements will be met: -** http://trolltech.com/products/qt/licenses/licensing/opensource/. -** If you are unsure which license is appropriate for your use, please -** review the following information: -** http://trolltech.com/products/qt/licenses/licensing/licensingoverview -** or contact the sales department at sales@trolltech.com. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. Licensees holding valid TQt -** Commercial licenses may use this file in accordance with the TQt -** Commercial License Agreement provided with the Software. -** -** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, -** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted -** herein. -** -**********************************************************************/ - -// ------------------------------------------------------------------------------------------------------------------ -// -// Continuation of middle eastern languages -// -// ------------------------------------------------------------------------------------------------------------------ - -// #### stil missing: identify invalid character combinations -static bool syriac_tqshape(TQShaperItem *item) -{ - TQ_ASSERT(item->script == TQFont::Syriac); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType && openType->supportsScript(TQFont::Syriac)) { - bool ot_ok; - if (arabicSyriacOpenTypeShape(openType, item, &ot_ok)) - return true; - if (ot_ok) - return false; - // fall through to the non OT code - } -#endif - return basic_tqshape(item); -} - - -static bool thaana_tqshape(TQShaperItem *item) -{ - TQ_ASSERT(item->script == TQFont::Thaana); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - - if (openType && openType->supportsScript(item->script)) { - openType->selectScript(TQFont::Thaana); - if (item->font->stringToCMap(item->string->tqunicode()+item->from, item->length, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - heuristicSetGlyphAttributes(item); - openType->tqshape(item); - return openType->positionAndAdd(item); - } -#endif - return basic_tqshape(item); -} - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Indic languages -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - -enum Form { - Invalid = 0x0, - Unknown = Invalid, - Consonant, - Nukta, - Halant, - Matra, - VowelMark, - StressMark, - IndependentVowel, - LengthMark, - Control, - Other -}; - -static const unsigned char indicForms[0xe00-0x900] = { - // Devangari - Invalid, VowelMark, VowelMark, VowelMark, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Matra, - Matra, Matra, Matra, Matra, - Matra, Matra, Matra, Matra, - Matra, Halant, Unknown, Unknown, - - Other, StressMark, StressMark, StressMark, - StressMark, Unknown, Unknown, Unknown, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - IndependentVowel, IndependentVowel, VowelMark, VowelMark, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Consonant, - Consonant, Consonant /* ??? */, Consonant, Consonant, - - // Bengali - Invalid, VowelMark, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Invalid, Invalid, IndependentVowel, - - IndependentVowel, Invalid, Invalid, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Invalid, Consonant, Invalid, - Invalid, Invalid, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Matra, - Matra, Invalid, Invalid, Matra, - Matra, Invalid, Invalid, Matra, - Matra, Halant, Consonant, Unknown, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, VowelMark, - Invalid, Invalid, Invalid, Invalid, - Consonant, Consonant, Invalid, Consonant, - - IndependentVowel, IndependentVowel, VowelMark, VowelMark, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Consonant, Consonant, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Gurmukhi - Invalid, VowelMark, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, Invalid, - Invalid, Invalid, Invalid, IndependentVowel, - - IndependentVowel, Invalid, Invalid, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Invalid, Consonant, Consonant, - Invalid, Consonant, Consonant, Invalid, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Invalid, - Invalid, Invalid, Invalid, Matra, - Matra, Invalid, Invalid, Matra, - Matra, Halant, Unknown, Unknown, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Unknown, Unknown, Unknown, - Invalid, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Invalid, - - Other, Other, Invalid, Invalid, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - StressMark, StressMark, Consonant, Consonant, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Gujarati - Invalid, VowelMark, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, Invalid, IndependentVowel, - - IndependentVowel, IndependentVowel, Invalid, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Invalid, Consonant, Consonant, - Invalid, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Matra, - Matra, Matra, Invalid, Matra, - Matra, Matra, Invalid, Matra, - Matra, Halant, Unknown, Unknown, - - Other, Unknown, Unknown, Unknown, - Unknown, Unknown, Unknown, Unknown, - Unknown, Unknown, Unknown, Unknown, - Unknown, Unknown, Unknown, Unknown, - - IndependentVowel, IndependentVowel, VowelMark, VowelMark, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Oriya - Invalid, VowelMark, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Invalid, Invalid, IndependentVowel, - - IndependentVowel, Invalid, Invalid, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Invalid, Consonant, Consonant, - Invalid, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Matra, - Invalid, Invalid, Invalid, Matra, - Matra, Invalid, Invalid, Matra, - Matra, Halant, Unknown, Unknown, - - Other, Invalid, Invalid, Invalid, - Invalid, Unknown, LengthMark, LengthMark, - Invalid, Invalid, Invalid, Invalid, - Consonant, Consonant, Invalid, Consonant, - - IndependentVowel, IndependentVowel, Invalid, Invalid, - Invalid, Invalid, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Consonant, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - //Tamil - Invalid, Invalid, VowelMark, Other, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, Invalid, - Invalid, Invalid, IndependentVowel, IndependentVowel, - - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - IndependentVowel, Consonant, Invalid, Invalid, - Invalid, Consonant, Consonant, Invalid, - Consonant, Invalid, Consonant, Consonant, - - Invalid, Invalid, Invalid, Consonant, - Consonant, Invalid, Invalid, Invalid, - Consonant, Consonant, Consonant, Invalid, - Invalid, Invalid, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Invalid, Invalid, Matra, Matra, - - Matra, Matra, Matra, Invalid, - Invalid, Invalid, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Halant, Invalid, Invalid, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, LengthMark, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Telugu - Invalid, VowelMark, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Invalid, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Invalid, Invalid, Matra, Matra, - - Matra, Matra, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Halant, Invalid, Invalid, - - Invalid, Invalid, Invalid, Invalid, - Invalid, LengthMark, Matra, Invalid, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - - IndependentVowel, IndependentVowel, Invalid, Invalid, - Invalid, Invalid, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Kannada - Invalid, Invalid, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Invalid, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Nukta, Other, Matra, Matra, - - Matra, Matra, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Halant, Invalid, Invalid, - - Invalid, Invalid, Invalid, Invalid, - Invalid, LengthMark, LengthMark, Invalid, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Consonant, Invalid, - - IndependentVowel, IndependentVowel, VowelMark, VowelMark, - Invalid, Invalid, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Malayalam - Invalid, Invalid, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - - IndependentVowel, Invalid, IndependentVowel, IndependentVowel, - IndependentVowel, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Unknown, Unknown, - Invalid, Invalid, Matra, Matra, - - Matra, Matra, Matra, Matra, - Invalid, Invalid, Matra, Matra, - Matra, Invalid, Matra, Matra, - Matra, Halant, Invalid, Invalid, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, LengthMark, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - - IndependentVowel, IndependentVowel, Invalid, Invalid, - Invalid, Invalid, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, - - // Sinhala - Invalid, Invalid, VowelMark, VowelMark, - Invalid, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - - IndependentVowel, IndependentVowel, IndependentVowel, IndependentVowel, - IndependentVowel, IndependentVowel, IndependentVowel, Invalid, - Invalid, Invalid, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - - Consonant, Consonant, Invalid, Consonant, - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Consonant, - Invalid, Consonant, Invalid, Invalid, - - Consonant, Consonant, Consonant, Consonant, - Consonant, Consonant, Consonant, Invalid, - Invalid, Invalid, Halant, Invalid, - Invalid, Invalid, Invalid, Matra, - - Matra, Matra, Matra, Matra, - Matra, Invalid, Matra, Invalid, - Matra, Matra, Matra, Matra, - Matra, Matra, Matra, Matra, - - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, Invalid, - - Invalid, Invalid, Matra, Matra, - Other, Other, Other, Other, - Other, Other, Other, Other, - Other, Other, Other, Other, -}; - -enum Position { - None, - Pre, - Above, - Below, - Post, - Split, - Base, - Reph, - Vattu, - Inherit -}; - -static const unsigned char indicPosition[0xe00-0x900] = { - // Devanagari - None, Above, Above, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - Below, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, Post, Pre, - - Post, Below, Below, Below, - Below, Above, Above, Above, - Above, Post, Post, Post, - Post, None, None, None, - - None, Above, Below, Above, - Above, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, Below, Below, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Bengali - None, Above, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - Below, None, None, Post, - - Below, None, None, None, - None, None, None, None, - None, None, None, None, - Below, None, Post, Pre, - - Post, Below, Below, Below, - Below, None, None, Pre, - Pre, None, None, Split, - Split, Below, None, None, - - None, None, None, None, - None, None, None, Post, - None, None, None, None, - None, None, None, None, - - None, None, Below, Below, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Gurmukhi - None, Above, Above, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, Post, - - Below, None, None, None, - None, Below, None, None, - None, Below, None, None, - Below, None, Post, Pre, - - Post, Below, Below, None, - None, None, None, Above, - Above, None, None, Above, - Above, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - Above, Above, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Gujarati - None, Above, Above, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - Below, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, Post, Pre, - - Post, Below, Below, Below, - Below, Above, None, Above, - Above, Post, None, Post, - Post, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, Below, Below, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Oriya - None, Above, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - Below, None, None, None, - Below, None, None, None, - Below, Below, Below, Post, - - Below, None, Below, Below, - None, None, None, None, - None, None, None, None, - None, None, Post, Above, - - Post, Below, Below, Below, - None, None, None, Pre, - Split, None, None, Split, - Split, None, None, None, - - None, None, None, None, - None, None, Above, Post, - None, None, None, None, - None, None, None, Post, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, Below, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Tamil - None, None, Above, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, Post, Post, - - Above, Below, Below, None, - None, None, Pre, Pre, - Pre, None, Split, Split, - Split, Halant, None, None, - - None, None, None, None, - None, None, None, Post, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Telugu - None, Post, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, Below, Below, Below, - Below, Below, Below, Below, - Below, Below, Below, Below, - - Below, Below, Below, Below, - Below, Below, Below, Below, - Below, None, Below, Below, - Below, Below, Below, Below, - - Below, None, Below, Below, - None, Below, Below, Below, - Below, Below, None, None, - None, None, Post, Above, - - Above, Post, Post, Post, - Post, None, Above, Above, - Split, None, Post, Above, - Above, Halant, None, None, - - None, None, None, None, - None, Above, Below, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Kannada - None, None, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, Below, Below, Below, - Below, Below, Below, Below, - Below, Below, Below, Below, - - Below, Below, Below, Below, - Below, Below, Below, Below, - Below, Below, Below, Below, - Below, Below, Below, Below, - - Below, None, Below, Below, - None, Below, Below, Below, - Below, Below, None, None, - None, None, Post, Above, - - Split, Post, Post, Post, - Post, None, Above, Split, - Split, None, Split, Split, - Above, Halant, None, None, - - None, None, None, None, - None, Post, Post, None, - None, None, None, None, - None, None, Below, None, - - None, None, Below, Below, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Malayalam - None, None, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, Post, - - Post, None, Below, None, - None, Post, None, None, - None, None, None, None, - None, None, Post, Post, - - Post, Post, Post, Post, - None, None, Pre, Pre, - Pre, None, Split, Split, - Split, Halant, None, None, - - None, None, None, None, - None, None, None, Post, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - // Sinhala - None, None, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, Post, - - Post, Post, Above, Above, - Below, None, Below, None, - Post, Pre, Split, Pre, - Split, Split, Split, Post, - - None, None, None, None, - None, None, None, None, - None, None, None, None, - None, None, None, None, - - None, None, Post, Post, - None, None, None, None, - None, None, None, None, - None, None, None, None -}; - -static inline Form form(unsigned short uc) { - if (uc < 0x900 || uc > 0xdff) { - if (uc == 0x25cc) - return Consonant; - if (uc == 0x200c || uc == 0x200d) - return Control; - return Other; - } - return (Form)indicForms[uc-0x900]; -} - -static inline Position indic_position(unsigned short uc) { - if (uc < 0x900 || uc > 0xdff) - return None; - return (Position) indicPosition[uc-0x900]; -} - - -enum IndicScriptProperties { - HasReph = 0x01, - HasSplit = 0x02 -}; - -const uchar scriptProperties[10] = { - // Devanagari, - HasReph, - // Bengali, - HasReph|HasSplit, - // Gurmukhi, - 0, - // Gujarati, - HasReph, - // Oriya, - HasReph|HasSplit, - // Tamil, - HasSplit, - // Telugu, - HasSplit, - // Kannada, - HasSplit|HasReph, - // Malayalam, - HasSplit, - // Sinhala, - HasSplit -}; - -struct IndicOrdering { - Form form; - Position position; -}; - -static const IndicOrdering devanagari_order [] = { - { Consonant, Below }, - { Matra, Below }, - { VowelMark, Below }, - { StressMark, Below }, - { Matra, Above }, - { Matra, Post }, - { Consonant, Reph }, - { VowelMark, Above }, - { StressMark, Above }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering bengali_order [] = { - { Consonant, Below }, - { Matra, Below }, - { Matra, Above }, - { Consonant, Reph }, - { VowelMark, Above }, - { Consonant, Post }, - { Matra, Post }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering gurmukhi_order [] = { - { Consonant, Below }, - { Matra, Below }, - { Matra, Above }, - { Consonant, Post }, - { Matra, Post }, - { VowelMark, Above }, - { (Form)0, None } -}; - -static const IndicOrdering tamil_order [] = { - { Matra, Above }, - { Matra, Post }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering telugu_order [] = { - { Matra, Above }, - { Matra, Below }, - { Matra, Post }, - { Consonant, Below }, - { Consonant, Post }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering kannada_order [] = { - { Matra, Above }, - { Matra, Post }, - { Consonant, Below }, - { Consonant, Post }, - { LengthMark, Post }, - { Consonant, Reph }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering malayalam_order [] = { - { Consonant, Below }, - { Matra, Below }, - { Consonant, Reph }, - { Consonant, Post }, - { Matra, Post }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering sinhala_order [] = { - { Matra, Below }, - { Matra, Above }, - { Matra, Post }, - { VowelMark, Post }, - { (Form)0, None } -}; - -static const IndicOrdering * const indic_order[] = { - devanagari_order, // Devanagari - bengali_order, // Bengali - gurmukhi_order, // Gurmukhi - devanagari_order, // Gujarati - bengali_order, // Oriya - tamil_order, // Tamil - telugu_order, // Telugu - kannada_order, // Kannada - malayalam_order, // Malayalam - sinhala_order // Sinhala -}; - - - -// vowel matras that have to be split into two parts. -static const unsigned short split_matras[] = { - // matra, split1, split2 - - // bengalis - 0x9cb, 0x9c7, 0x9be, - 0x9cc, 0x9c7, 0x9d7, - // oriya - 0xb48, 0xb47, 0xb56, - 0xb4b, 0xb47, 0xb3e, - 0xb4c, 0xb47, 0xb57, - // tamil - 0xbca, 0xbc6, 0xbbe, - 0xbcb, 0xbc7, 0xbbe, - 0xbcc, 0xbc6, 0xbd7, - // telugu - 0xc48, 0xc46, 0xc56, - // kannada - 0xcc0, 0xcbf, 0xcd5, - 0xcc7, 0xcc6, 0xcd5, - 0xcc8, 0xcc6, 0xcd6, - 0xcca, 0xcc6, 0xcc2, - 0xccb, 0xcca, 0xcd5, - // malayalam - 0xd4a, 0xd46, 0xd3e, - 0xd4b, 0xd47, 0xd3e, - 0xd4c, 0xd46, 0xd57, - // sinhala - 0xdda, 0xdd9, 0xdca, - 0xddc, 0xdd9, 0xdcf, - 0xddd, 0xddc, 0xdca, - 0xdde, 0xdd9, 0xddf, - 0xffff -}; - -static inline void splitMatra(unsigned short *reordered, int matra, int &len, int &base) -{ - unsigned short matra_uc = reordered[matra]; - //qDebug("matra=%d, reordered[matra]=%x", matra, reordered[matra]); - - const unsigned short *split = split_matras; - while (split[0] < matra_uc) - split += 3; - - assert(*split == matra_uc); - ++split; - - if (indic_position(*split) == Pre) { - reordered[matra] = split[1]; - memmove(reordered + 1, reordered, len*sizeof(unsigned short)); - reordered[0] = split[0]; - base++; - } else { - memmove(reordered + matra + 1, reordered + matra, (len-matra)*sizeof(unsigned short)); - reordered[matra] = split[0]; - reordered[matra+1] = split[1]; - } - len++; -} - -enum IndicProperties { - // these two are already defined -// CcmpProperty = 0x1, -// InitProperty = 0x2, - NuktaProperty = 0x4, - AkhantProperty = 0x8, - RephProperty = 0x10, - PreFormProperty = 0x20, - BelowFormProperty = 0x40, - AboveFormProperty = 0x80, - HalfFormProperty = 0x100, - PostFormProperty = 0x200, - VattuProperty = 0x400, - PreSubstProperty = 0x800, - BelowSubstProperty = 0x1000, - AboveSubstProperty = 0x2000, - PostSubstProperty = 0x4000, - HalantProperty = 0x8000, - CligProperty = 0x10000 -}; - -#ifndef TQT_NO_XFTFREETYPE -static const TQOpenType::Features indic_features[] = { - { FT_MAKE_TAG('c', 'c', 'm', 'p'), CcmpProperty }, - { FT_MAKE_TAG('i', 'n', 'i', 't'), InitProperty }, - { FT_MAKE_TAG('n', 'u', 'k', 't'), NuktaProperty }, - { FT_MAKE_TAG('a', 'k', 'h', 'n'), AkhantProperty }, - { FT_MAKE_TAG('r', 'p', 'h', 'f'), RephProperty }, - { FT_MAKE_TAG('b', 'l', 'w', 'f'), BelowFormProperty }, - { FT_MAKE_TAG('h', 'a', 'l', 'f'), HalfFormProperty }, - { FT_MAKE_TAG('p', 's', 't', 'f'), PostFormProperty }, - { FT_MAKE_TAG('v', 'a', 't', 'u'), VattuProperty }, - { FT_MAKE_TAG('p', 'r', 'e', 's'), PreSubstProperty }, - { FT_MAKE_TAG('b', 'l', 'w', 's'), BelowSubstProperty }, - { FT_MAKE_TAG('a', 'b', 'v', 's'), AboveSubstProperty }, - { FT_MAKE_TAG('p', 's', 't', 's'), PostSubstProperty }, - { FT_MAKE_TAG('h', 'a', 'l', 'n'), HalantProperty }, - { 0, 0 } -}; -#endif - -// #define INDIC_DEBUG -#ifdef INDIC_DEBUG -#define IDEBUG qDebug -#else -#define IDEBUG if(0) qDebug -#endif - -#ifdef INDIC_DEBUG -static TQString propertiesToString(int properties) -{ - TQString res; - properties = ~properties; - if (properties & CcmpProperty) - res += "Ccmp "; - if (properties & InitProperty) - res += "Init "; - if (properties & NuktaProperty) - res += "Nukta "; - if (properties & AkhantProperty) - res += "Akhant "; - if (properties & RephProperty) - res += "Reph "; - if (properties & PreFormProperty) - res += "PreForm "; - if (properties & BelowFormProperty) - res += "BelowForm "; - if (properties & AboveFormProperty) - res += "AboveForm "; - if (properties & HalfFormProperty) - res += "HalfForm "; - if (properties & PostFormProperty) - res += "PostForm "; - if (properties & VattuProperty) - res += "Vattu "; - if (properties & PreSubstProperty) - res += "PreSubst "; - if (properties & BelowSubstProperty) - res += "BelowSubst "; - if (properties & AboveSubstProperty) - res += "AboveSubst "; - if (properties & PostSubstProperty) - res += "PostSubst "; - if (properties & HalantProperty) - res += "Halant "; - if (properties & CligProperty) - res += "Clig "; - return res; -} -#endif - -static bool indic_tqshape_syllable(TQOpenType *openType, TQShaperItem *item, bool invalid) -{ - TQ_UNUSED(openType) - int script = item->script; - TQ_ASSERT(script >= TQFont::Devanagari && script <= TQFont::Sinhala); - const unsigned short script_base = 0x0900 + 0x80*(script-TQFont::Devanagari); - const unsigned short ra = script_base + 0x30; - const unsigned short halant = script_base + 0x4d; - const unsigned short nukta = script_base + 0x3c; - - int len = item->length; - IDEBUG(">>>>> indic tqshape: from=%d, len=%d invalid=%d", item->from, item->length, invalid); - - if (item->num_glyphs < len+4) { - item->num_glyphs = len+4; - return FALSE; - } - - TQVarLengthArray<unsigned short> reordered(len+4); - TQVarLengthArray<unsigned char> position(len+4); - - unsigned char properties = scriptProperties[script-TQFont::Devanagari]; - - if (invalid) { - *reordered.data() = 0x25cc; - memcpy(reordered.data()+1, item->string->tqunicode() + item->from, len*sizeof(TQChar)); - len++; - } else { - memcpy(reordered.data(), item->string->tqunicode() + item->from, len*sizeof(TQChar)); - } - if (reordered[len-1] == 0x200c) // zero width non joiner - len--; - - int i; - int base = 0; - int reph = -1; - -#ifdef INDIC_DEBUG - IDEBUG("original:"); - for (i = 0; i < len; i++) { - IDEBUG(" %d: %4x", i, reordered[i]); - } -#endif - - if (len != 1) { - unsigned short *uc = reordered.data(); - bool beginsWithRa = FALSE; - - // Rule 1: find base consonant - // - // The shaping engine finds the base consonant of the - // syllable, using the following algorithm: starting from the - // end of the syllable, move backwards until a consonant is - // found that does not have a below-base or post-base form - // (post-base forms have to follow below-base forms), or - // arrive at the first consonant. The consonant stopped at - // will be the base. - // - // * If the syllable starts with Ra + H (in a script that has - // 'Reph'), Ra is excluded from candidates for base - // consonants. - // - // * In Kannada and Telugu, the base consonant cannot be - // farther than 3 consonants from the end of the syllable. - // #### replace the HasReph property by testing if the feature exists in the font! - if (form(*uc) == Consonant || (script == TQFont::Bengali && form(*uc) == IndependentVowel)) { - beginsWithRa = (properties & HasReph) && ((len > 2) && *uc == ra && *(uc+1) == halant); - - if (beginsWithRa && form(*(uc+2)) == Control) - beginsWithRa = FALSE; - - base = (beginsWithRa ? 2 : 0); - IDEBUG(" length = %d, beginsWithRa = %d, base=%d", len, beginsWithRa, base); - - int lastConsonant = 0; - int matra = -1; - // we remember: - // * the last consonant since we need it for rule 2 - // * the matras position for rule 3 and 4 - - // figure out possible base glyphs - memset(position.data(), 0, len); - if (script == TQFont::Devanagari || script == TQFont::Gujarati) { - bool vattu = FALSE; - for (i = base; i < len; ++i) { - position[i] = form(uc[i]); - if (position[i] == Consonant) { - lastConsonant = i; - vattu = (!vattu && uc[i] == ra); - if (vattu) { - IDEBUG("excluding vattu glyph at %d from base candidates", i); - position[i] = Vattu; - } - } else if (position[i] == Matra) { - matra = i; - } - } - } else { - for (i = base; i < len; ++i) { - position[i] = form(uc[i]); - if (position[i] == Consonant) - lastConsonant = i; - else if (matra < 0 && position[i] == Matra) - matra = i; - } - } - int skipped = 0; - Position pos = Post; - for (i = len-1; i > base; i--) { - if (position[i] != Consonant && (position[i] != Control || script == TQFont::Kannada)) - continue; - - Position charPosition = indic_position(uc[i]); - if (pos == Post && charPosition == Post) { - pos = Post; - } else if ((pos == Post || pos == Below) && charPosition == Below) { - if (script == TQFont::Devanagari || script == TQFont::Gujarati) - base = i; - pos = Below; - } else { - base = i; - break; - } - if (skipped == 2 && (script == TQFont::Kannada || script == TQFont::Telugu)) { - base = i; - break; - } - ++skipped; - } - - IDEBUG(" base consonant at %d skipped=%d, lastConsonant=%d", base, skipped, lastConsonant); - - // Rule 2: - // - // If the base consonant is not the last one, Uniscribe - // moves the halant from the base consonant to the last - // one. - if (lastConsonant > base) { - int halantPos = 0; - if (uc[base+1] == halant) - halantPos = base + 1; - else if (uc[base+1] == nukta && uc[base+2] == halant) - halantPos = base + 2; - if (halantPos > 0) { - IDEBUG(" moving halant from %d to %d!", base+1, lastConsonant); - for (i = halantPos; i < lastConsonant; i++) - uc[i] = uc[i+1]; - uc[lastConsonant] = halant; - } - } - - // Rule 3: - // - // If the syllable starts with Ra + H, Uniscribe moves - // this combination so that it follows either: - - // * the post-base 'matra' (if any) or the base consonant - // (in scripts that show similarity to Devanagari, i.e., - // Devanagari, Gujarati, Bengali) - // * the base consonant (other scripts) - // * the end of the syllable (Kannada) - - Position matra_position = None; - if (matra > 0) - matra_position = indic_position(uc[matra]); - IDEBUG(" matra at %d with form %d, base=%d", matra, matra_position, base); - - if (beginsWithRa && base != 0) { - int toPos = base+1; - if (toPos < len && uc[toPos] == nukta) - toPos++; - if (toPos < len && uc[toPos] == halant) - toPos++; - if (toPos < len && uc[toPos] == 0x200d) - toPos++; - if (toPos < len-1 && uc[toPos] == ra && uc[toPos+1] == halant) - toPos += 2; - if (script == TQFont::Devanagari || script == TQFont::Gujarati || script == TQFont::Bengali) { - if (matra_position == Post || matra_position == Split) { - toPos = matra+1; - matra -= 2; - } - } else if (script == TQFont::Kannada) { - toPos = len; - matra -= 2; - } - - IDEBUG("moving leading ra+halant to position %d", toPos); - for (i = 2; i < toPos; i++) - uc[i-2] = uc[i]; - uc[toPos-2] = ra; - uc[toPos-1] = halant; - base -= 2; - if (properties & HasReph) - reph = toPos-2; - } - - // Rule 4: - - // Uniscribe splits two- or three-part matras into their - // parts. This splitting is a character-to-character - // operation). - // - // Uniscribe describes some moving operations for these - // matras here. For shaping however all pre matras need - // to be at the begining of the syllable, so we just move - // them there now. - if (matra_position == Split) { - splitMatra(uc, matra, len, base); - // Handle three-part matras (0xccb in Kannada) - matra_position = indic_position(uc[matra]); - if (matra_position == Split) - splitMatra(uc, matra, len, base); - } else if (matra_position == Pre) { - unsigned short m = uc[matra]; - while (matra--) - uc[matra+1] = uc[matra]; - uc[0] = m; - base++; - } - } - - // Rule 5: - // - // Uniscribe classifies consonants and 'matra' parts as - // pre-base, above-base (Reph), below-base or post-base. This - // classification exists on the character code level and is - // language-dependent, not font-dependent. - for (i = 0; i < base; ++i) - position[i] = Pre; - position[base] = Base; - for (i = base+1; i < len; ++i) { - position[i] = indic_position(uc[i]); - // #### replace by adjusting table - if (uc[i] == nukta || uc[i] == halant) - position[i] = Inherit; - } - if (reph > 0) { - // recalculate reph, it might have changed. - for (i = base+1; i < len; ++i) - if (uc[i] == ra) - reph = i; - position[reph] = Reph; - position[reph+1] = Inherit; - } - - // all reordering happens now to the chars after the base - int fixed = base+1; - if (fixed < len && uc[fixed] == nukta) - fixed++; - if (fixed < len && uc[fixed] == halant) - fixed++; - if (fixed < len && uc[fixed] == 0x200d) - fixed++; - -#ifdef INDIC_DEBUG - for (i = fixed; i < len; ++i) - IDEBUG("position[%d] = %d, form=%d", i, position[i], form(uc[i])); -#endif - // we continuosly position the matras and vowel marks and increase the fixed - // until we reached the end. - const IndicOrdering *finalOrder = indic_order[script-TQFont::Devanagari]; - - IDEBUG(" reordering pass:"); - //IDEBUG(" base=%d fixed=%d", base, fixed); - int toMove = 0; - while (finalOrder[toMove].form && fixed < len-1) { - //IDEBUG(" fixed = %d, moving form %d with pos %d", fixed, finalOrder[toMove].form, finalOrder[toMove].position); - for (i = fixed; i < len; i++) { - if (form(uc[i]) == finalOrder[toMove].form && - position[i] == finalOrder[toMove].position) { - // need to move this glyph - int to = fixed; - if (i < len-1 && position[i+1] == Inherit) { - IDEBUG(" moving two chars from %d to %d", i, to); - unsigned short ch = uc[i]; - unsigned short ch2 = uc[i+1]; - unsigned char pos = position[i]; - for (int j = i+1; j > to+1; j--) { - uc[j] = uc[j-2]; - position[j] = position[j-2]; - } - uc[to] = ch; - uc[to+1] = ch2; - position[to] = pos; - position[to+1] = pos; - fixed += 2; - } else { - IDEBUG(" moving one char from %d to %d", i, to); - unsigned short ch = uc[i]; - unsigned char pos = position[i]; - for (int j = i; j > to; j--) { - uc[j] = uc[j-1]; - position[j] = position[j-1]; - } - uc[to] = ch; - position[to] = pos; - fixed++; - } - } - } - toMove++; - } - - } - - if (reph > 0) { - // recalculate reph, it might have changed. - for (i = base+1; i < len; ++i) - if (reordered[i] == ra) - reph = i; - } - - if (item->font->stringToCMap((const TQChar *)reordered.data(), len, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - - - IDEBUG(" base=%d, reph=%d", base, reph); - IDEBUG("reordered:"); - for (i = 0; i < len; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - IDEBUG(" %d: %4x", i, reordered[i]); - } - - // now we have the syllable in the right order, and can start running it through open type. - - bool control = FALSE; - for (i = 0; i < len; ++i) - control |= (form(reordered[i]) == Control); - -#ifndef TQT_NO_XFTFREETYPE - if (openType) { - - // we need to keep track of where the base glyph is for some - // scripts and use the cluster feature for this. This - // also means we have to correct the logCluster output from - // the open type engine manually afterwards. for indic this - // is rather simple, as all chars just point to the first - // glyph in the syllable. - TQVarLengthArray<unsigned short> clusters(len); - TQVarLengthArray<unsigned int> properties(len); - - for (i = 0; i < len; ++i) - clusters[i] = i; - - // features we should always apply - for (i = 0; i < len; ++i) - properties[i] = ~(CcmpProperty - | NuktaProperty - | VattuProperty - | PreSubstProperty - | BelowSubstProperty - | AboveSubstProperty - | HalantProperty - | PositioningProperties); - - // Ccmp always applies - // Init - if (item->from == 0 - || !(item->string->tqunicode()[item->from-1].isLetter() || item->string->tqunicode()[item->from-1].isMark())) - properties[0] &= ~InitProperty; - - // Nukta always applies - // Akhant - for (i = 0; i <= base; ++i) - properties[i] &= ~AkhantProperty; - // Reph - if (reph >= 0) { - properties[reph] &= ~RephProperty; - properties[reph+1] &= ~RephProperty; - } - // BelowForm - for (i = base+1; i < len; ++i) - properties[i] &= ~BelowFormProperty; - - if (script == TQFont::Devanagari || script == TQFont::Gujarati) { - // vattu glyphs need this aswell - bool vattu = FALSE; - for (i = base-2; i > 1; --i) { - if (form(reordered[i]) == Consonant) { - vattu = (!vattu && reordered[i] == ra); - if (vattu) { - IDEBUG("forming vattu ligature at %d", i); - properties[i] &= ~BelowFormProperty; - properties[i+1] &= ~BelowFormProperty; - } - } - } - } - // HalfFormProperty - for (i = 0; i < base; ++i) - properties[i] &= ~HalfFormProperty; - if (control) { - for (i = 2; i < len; ++i) { - if (reordered[i] == 0x200d /* ZWJ */) { - properties[i-1] &= ~HalfFormProperty; - properties[i-2] &= ~HalfFormProperty; - } else if (reordered[i] == 0x200c /* ZWNJ */) { - properties[i-1] &= ~HalfFormProperty; - properties[i-2] &= ~HalfFormProperty; - } - } - } - // PostFormProperty - for (i = base+1; i < len; ++i) - properties[i] &= ~PostFormProperty; - // vattu always applies - // pres always applies - // blws always applies - // abvs always applies - - // psts - // ### this looks slightly different from before, but I believe it's correct - if (reordered[len-1] != halant || base != len-2) - properties[base] &= ~PostSubstProperty; - for (i = base+1; i < len; ++i) - properties[i] &= ~PostSubstProperty; - - // halant always applies - -#ifdef INDIC_DEBUG - { - IDEBUG("OT properties:"); - for (int i = 0; i < len; ++i) - qDebug(" i: %s", ::propertiesToString(properties[i]).toLatin1().data()); - } -#endif - - // initialize - item->log_clusters = clusters.data(); - openType->tqshape(item, properties.data()); - - int newLen = openType->len(); - OTL_GlyphItem otl_glyphs = openType->glyphs(); - - // move the left matra back to it's correct position in malayalam and tamil - if ((script == TQFont::Malayalam || script == TQFont::Tamil) && (form(reordered[0]) == Matra)) { -// qDebug("reordering matra, len=%d", newLen); - // need to find the base in the tqshaped string and move the matra there - int basePos = 0; - while (basePos < newLen && (int)otl_glyphs[basePos].cluster <= base) - basePos++; - --basePos; - if (basePos < newLen && basePos > 1) { -// qDebug("moving prebase matra to position %d in syllable newlen=%d", basePos, newLen); - OTL_GlyphItemRec m = otl_glyphs[0]; - --basePos; - for (i = 0; i < basePos; ++i) - otl_glyphs[i] = otl_glyphs[i+1]; - otl_glyphs[basePos] = m; - } - } - - if (!openType->positionAndAdd(item, FALSE)) - return FALSE; - - if (control) { - IDEBUG("found a control char in the syllable"); - int i = 0, j = 0; - while (i < item->num_glyphs) { - if (form(reordered[otl_glyphs[i].cluster]) == Control) { - ++i; - if (i >= item->num_glyphs) - break; - } - item->glyphs[j] = item->glyphs[i]; - ++i; - ++j; - } - item->num_glyphs = j; - } - - } -#endif - - item->attributes[0].clusterStart = TRUE; - IDEBUG("<<<<<<"); - return TRUE; -} - - -/* syllables are of the form: - - (Consonant Nukta? Halant)* Consonant Matra? VowelMark? StressMark? - (Consonant Nukta? Halant)* Consonant Halant - IndependentVowel VowelMark? StressMark? - - We return syllable boundaries on invalid combinations aswell -*/ -static int indic_nextSyllableBoundary(int script, const TQString &s, int start, int end, bool *invalid) -{ - *invalid = FALSE; - IDEBUG("indic_nextSyllableBoundary: start=%d, end=%d", start, end); - const TQChar *uc = s.tqunicode()+start; - - int pos = 0; - Form state = form(uc[pos].tqunicode()); - IDEBUG("state[%d]=%d (uc=%4x)", pos, state, uc[pos].tqunicode()); - pos++; - - if (state != Consonant && state != IndependentVowel) { - if (state != Other) - *invalid = TRUE; - goto finish; - } - - while (pos < end - start) { - Form newState = form(uc[pos].tqunicode()); - IDEBUG("state[%d]=%d (uc=%4x)", pos, newState, uc[pos].tqunicode()); - switch(newState) { - case Control: - newState = state; - if (state == Halant && uc[pos].tqunicode() == 0x200d /* ZWJ */) - break; - // the control character should be the last char in the item - ++pos; - goto finish; - case Consonant: - if (state == Halant && (script != TQFont::Sinhala || uc[pos-1].tqunicode() == 0x200d /* ZWJ */)) - break; - goto finish; - case Halant: - if (state == Nukta || state == Consonant) - break; - // Bengali has a special exception allowing the combination Vowel_A/E + Halant + Ya - if (script == TQFont::Bengali && pos == 1 && - (uc[0].tqunicode() == 0x0985 || uc[0].tqunicode() == 0x098f)) - break; - goto finish; - case Nukta: - if (state == Consonant) - break; - goto finish; - case StressMark: - if (state == VowelMark) - break; - // fall through - case VowelMark: - if (state == Matra || state == IndependentVowel) - break; - // fall through - case Matra: - if (state == Consonant || state == Nukta) - break; - // ### not sure if this is correct. If it is, does it apply only to Bengali or should - // it work for all Indic languages? - // the combination Independent_A + Vowel Sign AA is allowed. - if (script == TQFont::Bengali && uc[pos].tqunicode() == 0x9be && uc[pos-1].tqunicode() == 0x985) - break; - if (script == TQFont::Tamil && state == Matra) { - if (uc[pos-1].tqunicode() == 0x0bc6 && - (uc[pos].tqunicode() == 0xbbe || uc[pos].tqunicode() == 0xbd7)) - break; - if (uc[pos-1].tqunicode() == 0x0bc7 && uc[pos].tqunicode() == 0xbbe) - break; - } - goto finish; - - case LengthMark: - case IndependentVowel: - case Invalid: - case Other: - goto finish; - } - state = newState; - pos++; - } - finish: - return pos+start; -} - -static bool indic_tqshape(TQShaperItem *item) -{ - TQ_ASSERT(item->script >= TQFont::Devanagari && item->script <= TQFont::Sinhala); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType) - openType->selectScript(item->script, indic_features); -#else - TQOpenType *openType = 0; -#endif - unsigned short *logClusters = item->log_clusters; - - TQShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->from; - int end = sstart + item->length; - IDEBUG("indic_tqshape: from %d length %d", item->from, item->length); - while (sstart < end) { - bool invalid; - int send = indic_nextSyllableBoundary(item->script, *item->string, sstart, end, &invalid); - IDEBUG("syllable from %d, length %d, invalid=%s", sstart, send-sstart, - invalid ? "TRUE" : "FALSE"); - syllable.from = sstart; - syllable.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!indic_tqshape_syllable(openType, &syllable, invalid)) { - IDEBUG("syllable shaping failed, syllable requests %d glyphs", syllable.num_glyphs); - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - item->has_positioning |= syllable.has_positioning; - - // fix logcluster array - IDEBUG("syllable:"); - int i; - for (i = first_glyph; i < first_glyph + syllable.num_glyphs; ++i) - IDEBUG(" %d -> glyph %x", i, item->glyphs[i]); - IDEBUG(" logclusters:"); - for (i = sstart; i < send; ++i) { - IDEBUG(" %d -> glyph %d", i, first_glyph); - logClusters[i-item->from] = first_glyph; - } - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; -} - - -static void indic_attributes(int script, const TQString &text, int from, int len, TQCharAttributes *attributes) -{ - int end = from + len; - const TQChar *uc = text.tqunicode() + from; - attributes += from; - int i = 0; - while (i < len) { - bool invalid; - int boundary = indic_nextSyllableBoundary(script, text, from+i, end, &invalid) - from; - attributes[i].charStop = TRUE; - - if (boundary > len-1) boundary = len; - i++; - while (i < boundary) { - attributes[i].charStop = FALSE; - ++uc; - ++i; - } - assert(i == boundary); - } - - -} - - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Thai and Lao -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - -#include <tqtextcodec.h> -#include <tqlibrary.h> - - -static void thaiWordBreaks(const TQChar *string, const int len, TQCharAttributes *attributes) -{ -#ifndef TQT_NO_TEXTCODEC - typedef int (*th_brk_def)(const char*, int[], int); - static TQTextCodec *thaiCodec = TQTextCodec::codecForMib(2259); - static th_brk_def th_brk = 0; - -#ifndef TQT_NO_LIBRARY - /* load libthai dynamically */ - if (!th_brk && thaiCodec) { - th_brk = (th_brk_def)TQLibrary::resolve("thai", "th_brk"); - if (!th_brk) - thaiCodec = 0; - } -#endif - - if (!th_brk) - return; - - TQCString cstr = thaiCodec->fromUnicode(TQConstString(string, len).string()); - - int brp[128]; - int *break_positions = brp; - int numbreaks = th_brk(cstr.data(), break_positions, 128); - if (numbreaks > 128) { - break_positions = new int[numbreaks]; - numbreaks = th_brk(cstr.data(),break_positions, numbreaks); - } - - attributes[0].softBreak = TRUE; - int i; - for (i = 1; i < len; ++i) - attributes[i].softBreak = FALSE; - - for (i = 0; i < numbreaks; ++i) - attributes[break_positions[i]].softBreak = TRUE; - - if (break_positions != brp) - delete [] break_positions; -#endif -} - - -static void thai_attributes( int script, const TQString &text, int from, int len, TQCharAttributes *attributes ) -{ - TQ_UNUSED(script); - TQ_ASSERT(script == TQFont::Thai); - thaiWordBreaks(text.tqunicode() + from, len, attributes); -} - - - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Tibetan -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - -// tibetan syllables are of the form: -// head position consonant -// first sub-joined consonant -// ....intermediate sub-joined consonants (if any) -// last sub-joined consonant -// sub-joined vowel (a-chung U+0F71) -// standard or compound vowel sign (or 'virama' for devanagari transliteration) - -enum TibetanForm { - TibetanOther, - TibetanHeadConsonant, - TibetanSubjoinedConsonant, - TibetanSubjoinedVowel, - TibetanVowel -}; - -// this table starts at U+0f40 -static const unsigned char tibetanForm[0x80] = { - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, TibetanHeadConsonant, - TibetanOther, TibetanOther, TibetanOther, TibetanOther, - - TibetanOther, TibetanVowel, TibetanVowel, TibetanVowel, - TibetanVowel, TibetanVowel, TibetanVowel, TibetanVowel, - TibetanVowel, TibetanVowel, TibetanVowel, TibetanVowel, - TibetanVowel, TibetanVowel, TibetanVowel, TibetanVowel, - - TibetanVowel, TibetanVowel, TibetanVowel, TibetanVowel, - TibetanVowel, TibetanVowel, TibetanVowel, TibetanVowel, - TibetanOther, TibetanOther, TibetanOther, TibetanOther, - TibetanOther, TibetanOther, TibetanOther, TibetanOther, - - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, TibetanSubjoinedConsonant, - TibetanSubjoinedConsonant, TibetanOther, TibetanOther, TibetanOther -}; - - -static inline TibetanForm tibetan_form(const TQChar &c) -{ - return (TibetanForm)tibetanForm[c.tqunicode() - 0x0f40]; -} - -#ifndef TQT_NO_XFTFREETYPE -static const TQOpenType::Features tibetan_features[] = { - { FT_MAKE_TAG('c', 'c', 'm', 'p'), CcmpProperty }, - { FT_MAKE_TAG('a', 'b', 'v', 's'), AboveSubstProperty }, - { FT_MAKE_TAG('b', 'l', 'w', 's'), BelowSubstProperty }, - {0, 0} -}; -#endif - -static bool tibetan_tqshape_syllable(TQOpenType *openType, TQShaperItem *item, bool invalid) -{ - TQ_UNUSED(openType) - int len = item->length; - - if (item->num_glyphs < item->length + 4) { - item->num_glyphs = item->length + 4; - return FALSE; - } - - int i; - TQVarLengthArray<unsigned short> reordered(len+4); - - const TQChar *str = item->string->tqunicode() + item->from; - if (invalid) { - *reordered.data() = 0x25cc; - memcpy(reordered.data()+1, str, len*sizeof(TQChar)); - len++; - str = (TQChar *)reordered.data(); - } - - if (item->font->stringToCMap(str, len, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - - for (i = 0; i < item->length; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - IDEBUG(" %d: %4x", i, str[i].tqunicode()); - } - - // now we have the syllable in the right order, and can start running it through open type. - -#ifndef TQT_NO_XFTFREETYPE - if (openType && openType->supportsScript(TQFont::Tibetan)) { - openType->selectScript(TQFont::Tibetan, tibetan_features); - - openType->tqshape(item); - if (!openType->positionAndAdd(item, FALSE)) - return FALSE; - } -#endif - - item->attributes[0].clusterStart = TRUE; - return TRUE; -} - - -static int tibetan_nextSyllableBoundary(const TQString &s, int start, int end, bool *invalid) -{ - const TQChar *uc = s.tqunicode() + start; - - int pos = 0; - TibetanForm state = tibetan_form(*uc); - -// qDebug("state[%d]=%d (uc=%4x)", pos, state, uc[pos].tqunicode()); - pos++; - - if (state != TibetanHeadConsonant) { - if (state != TibetanOther) - *invalid = TRUE; - goto finish; - } - - while (pos < end - start) { - TibetanForm newState = tibetan_form(uc[pos]); - switch(newState) { - case TibetanSubjoinedConsonant: - case TibetanSubjoinedVowel: - if (state != TibetanHeadConsonant && - state != TibetanSubjoinedConsonant) - goto finish; - state = newState; - break; - case TibetanVowel: - if (state != TibetanHeadConsonant && - state != TibetanSubjoinedConsonant && - state != TibetanSubjoinedVowel) - goto finish; - break; - case TibetanOther: - case TibetanHeadConsonant: - goto finish; - } - pos++; - } - -finish: - *invalid = FALSE; - return start+pos; -} - -static bool tibetan_tqshape(TQShaperItem *item) -{ - TQ_ASSERT(item->script == TQFont::Tibetan); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType && !openType->supportsScript(item->script)) - openType = 0; -#else - TQOpenType *openType = 0; -#endif - unsigned short *logClusters = item->log_clusters; - - TQShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->from; - int end = sstart + item->length; - while (sstart < end) { - bool invalid; - int send = tibetan_nextSyllableBoundary(*(item->string), sstart, end, &invalid); - IDEBUG("syllable from %d, length %d, invalid=%s", sstart, send-sstart, - invalid ? "TRUE" : "FALSE"); - syllable.from = sstart; - syllable.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!tibetan_tqshape_syllable(openType, &syllable, invalid)) { - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - item->has_positioning |= syllable.has_positioning; - - // fix logcluster array - for (int i = sstart; i < send; ++i) - logClusters[i-item->from] = first_glyph; - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; -} - -static void tibetan_attributes(int script, const TQString &text, int from, int len, TQCharAttributes *attributes) -{ - TQ_UNUSED(script); - - int end = from + len; - const TQChar *uc = text.tqunicode() + from; - attributes += from; - int i = 0; - while (i < len) { - bool invalid; - int boundary = tibetan_nextSyllableBoundary(text, from+i, end, &invalid) - from; - - attributes[i].charStop = TRUE; - - if (boundary > len-1) boundary = len; - i++; - while (i < boundary) { - attributes[i].charStop = FALSE; - ++uc; - ++i; - } - assert(i == boundary); - } -} - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Khmer -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - - -// Vocabulary -// Base -> A consonant or an independent vowel in its full (not subscript) form. It is the -// center of the syllable, it can be surrounded by coeng (subscript) consonants, vowels, -// split vowels, signs... but there is only one base in a syllable, it has to be coded as -// the first character of the syllable. -// split vowel --> vowel that has two parts placed separately (e.g. Before and after the consonant). -// Khmer language has five of them. Khmer split vowels either have one part before the -// base and one after the base or they have a part before the base and a part above the base. -// The first part of all Khmer split vowels is the same character, identical to -// the glyph of Khmer dependent vowel SRA EI -// coeng --> modifier used in Khmer to construct coeng (subscript) consonants -// Differently than indian languages, the coeng modifies the consonant that follows it, -// not the one preceding it Each consonant has two forms, the base form and the subscript form -// the base form is the normal one (using the consonants code-point), the subscript form is -// displayed when the combination coeng + consonant is encountered. -// Consonant of type 1 -> A consonant which has subscript for that only occupies space under a base consonant -// Consonant of type 2.-> Its subscript form occupies space under and before the base (only one, RO) -// Consonant of Type 3 -> Its subscript form occupies space under and after the base (KHO, CHHO, THHO, BA, YO, SA) -// Consonant shifter -> Khmer has to series of consonants. The same dependent vowel has different sounds -// if it is attached to a consonant of the first series or a consonant of the second series -// Most consonants have an equivalent in the other series, but some of theme exist only in -// one series (for example SA). If we want to use the consonant SA with a vowel sound that -// can only be done with a vowel sound that corresponds to a vowel accompanying a consonant -// of the other series, then we need to use a consonant shifter: TRIISAP or MUSIKATOAN -// x17C9 y x17CA. TRIISAP changes a first series consonant to second series sound and -// MUSIKATOAN a second series consonant to have a first series vowel sound. -// Consonant shifter are both normally supercript marks, but, when they are followed by a -// superscript, they change tqshape and take the form of subscript dependent vowel SRA U. -// If they are in the same syllable as a coeng consonant, Unicode 3.0 says that they -// should be typed before the coeng. Unicode 4.0 breaks the standard and says that it should -// be placed after the coeng consonant. -// Dependent vowel -> In khmer dependent vowels can be placed above, below, before or after the base -// Each vowel has its own position. Only one vowel per syllable is allowed. -// Signs -> Khmer has above signs and post signs. Only one above sign and/or one post sign are -// Allowed in a syllable. -// -// -// order is important here! This order must be the same that is found in each horizontal -// line in the statetable for Khmer (see khmerStateTable) . -// -enum KhmerCharClassValues { - CC_RESERVED = 0, - CC_CONSONANT = 1, // Consonant of type 1 or independent vowel - CC_CONSONANT2 = 2, // Consonant of type 2 - CC_CONSONANT3 = 3, // Consonant of type 3 - CC_ZERO_WIDTH_NJ_MARK = 4, // Zero Width non joiner character (0x200C) - CC_CONSONANT_SHIFTER = 5, - CC_ROBAT = 6, // Khmer special diacritic accent -treated differently in state table - CC_COENG = 7, // Subscript consonant combining character - CC_DEPENDENT_VOWEL = 8, - CC_SIGN_ABOVE = 9, - CC_SIGN_AFTER = 10, - CC_ZERO_WIDTH_J_MARK = 11, // Zero width joiner character - CC_COUNT = 12 // This is the number of character classes -}; - - -enum KhmerCharClassFlags { - CF_CLASS_MASK = 0x0000FFFF, - - CF_CONSONANT = 0x01000000, // flag to speed up comparing - CF_SPLIT_VOWEL = 0x02000000, // flag for a split vowel -> the first part is added in front of the syllable - CF_DOTTED_CIRCLE = 0x04000000, // add a dotted circle if a character with this flag is the first in a syllable - CF_COENG = 0x08000000, // flag to speed up comparing - CF_SHIFTER = 0x10000000, // flag to speed up comparing - CF_ABOVE_VOWEL = 0x20000000, // flag to speed up comparing - - // position flags - CF_POS_BEFORE = 0x00080000, - CF_POS_BELOW = 0x00040000, - CF_POS_ABOVE = 0x00020000, - CF_POS_AFTER = 0x00010000, - CF_POS_MASK = 0x000f0000 -}; - - -// Characters that get refered to by name -enum KhmerChar { - C_SIGN_ZWNJ = 0x200C, - C_SIGN_ZWJ = 0x200D, - C_DOTTED_CIRCLE = 0x25CC, - C_RO = 0x179A, - C_VOWEL_AA = 0x17B6, - C_SIGN_NIKAHIT = 0x17C6, - C_VOWEL_E = 0x17C1, - C_COENG = 0x17D2 -}; - - -// simple classes, they are used in the statetable (in this file) to control the length of a syllable -// they are also used to know where a character should be placed (location in reference to the base character) -// and also to know if a character, when independently displayed, should be displayed with a dotted-circle to -// indicate error in syllable construction -// -enum { - _xx = CC_RESERVED, - _sa = CC_SIGN_ABOVE | CF_DOTTED_CIRCLE | CF_POS_ABOVE, - _sp = CC_SIGN_AFTER | CF_DOTTED_CIRCLE| CF_POS_AFTER, - _c1 = CC_CONSONANT | CF_CONSONANT, - _c2 = CC_CONSONANT2 | CF_CONSONANT, - _c3 = CC_CONSONANT3 | CF_CONSONANT, - _rb = CC_ROBAT | CF_POS_ABOVE | CF_DOTTED_CIRCLE, - _cs = CC_CONSONANT_SHIFTER | CF_DOTTED_CIRCLE | CF_SHIFTER, - _dl = CC_DEPENDENT_VOWEL | CF_POS_BEFORE | CF_DOTTED_CIRCLE, - _db = CC_DEPENDENT_VOWEL | CF_POS_BELOW | CF_DOTTED_CIRCLE, - _da = CC_DEPENDENT_VOWEL | CF_POS_ABOVE | CF_DOTTED_CIRCLE | CF_ABOVE_VOWEL, - _dr = CC_DEPENDENT_VOWEL | CF_POS_AFTER | CF_DOTTED_CIRCLE, - _co = CC_COENG | CF_COENG | CF_DOTTED_CIRCLE, - - // split vowel - _va = _da | CF_SPLIT_VOWEL, - _vr = _dr | CF_SPLIT_VOWEL -}; - - -// Character class: a character class value -// ORed with character class flags. -// -typedef unsigned long KhmerCharClass; - - -// Character class tables -// _xx character does not combine into syllable, such as numbers, puntuation marks, non-Khmer signs... -// _sa Sign placed above the base -// _sp Sign placed after the base -// _c1 Consonant of type 1 or independent vowel (independent vowels behave as type 1 consonants) -// _c2 Consonant of type 2 (only RO) -// _c3 Consonant of type 3 -// _rb Khmer sign robat u17CC. combining mark for subscript consonants -// _cd Consonant-shifter -// _dl Dependent vowel placed before the base (left of the base) -// _db Dependent vowel placed below the base -// _da Dependent vowel placed above the base -// _dr Dependent vowel placed behind the base (right of the base) -// _co Khmer combining mark COENG u17D2, combines with the consonant or independent vowel following -// it to create a subscript consonant or independent vowel -// _va Khmer split vowel in wich the first part is before the base and the second one above the base -// _vr Khmer split vowel in wich the first part is before the base and the second one behind (right of) the base -// -static const KhmerCharClass khmerCharClasses[] = { - _c1, _c1, _c1, _c3, _c1, _c1, _c1, _c1, _c3, _c1, _c1, _c1, _c1, _c3, _c1, _c1, // 1780 - 178F - _c1, _c1, _c1, _c1, _c3, _c1, _c1, _c1, _c1, _c3, _c2, _c1, _c1, _c1, _c3, _c3, // 1790 - 179F - _c1, _c3, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, _c1, // 17A0 - 17AF - _c1, _c1, _c1, _c1, _dr, _dr, _dr, _da, _da, _da, _da, _db, _db, _db, _va, _vr, // 17B0 - 17BF - _vr, _dl, _dl, _dl, _vr, _vr, _sa, _sp, _sp, _cs, _cs, _sa, _rb, _sa, _sa, _sa, // 17C0 - 17CF - _sa, _sa, _co, _sa, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _sa, _xx, _xx // 17D0 - 17DF -}; - -// this enum must reflect the range of khmerCharClasses -enum KhmerCharClassesRange { - KhmerFirstChar = 0x1780, - KhmerLastChar = 0x17df -}; - -// Below we define how a character in the input string is either in the khmerCharClasses table -// (in which case we get its type back), a ZWJ or ZWNJ (two characters that may appear -// within the syllable, but are not in the table) we also get their type back, or an unknown object -// in which case we get _xx (CC_RESERVED) back -// -static inline KhmerCharClass getKhmerCharClass(const TQChar &uc) -{ - if (uc.tqunicode() == C_SIGN_ZWJ) { - return CC_ZERO_WIDTH_J_MARK; - } - - if (uc.tqunicode() == C_SIGN_ZWNJ) { - return CC_ZERO_WIDTH_NJ_MARK; - } - - if (uc.tqunicode() < KhmerFirstChar || uc.tqunicode() > KhmerLastChar) { - return CC_RESERVED; - } - - return khmerCharClasses[uc.tqunicode() - KhmerFirstChar]; -} - - -// The stateTable is used to calculate the end (the length) of a well -// formed Khmer Syllable. -// -// Each horizontal line is ordered exactly the same way as the values in KhmerClassTable -// CharClassValues. This coincidence of values allows the follow up of the table. -// -// Each line corresponds to a state, which does not necessarily need to be a type -// of component... for example, state 2 is a base, with is always a first character -// in the syllable, but the state could be produced a consonant of any type when -// it is the first character that is analysed (in ground state). -// -// Differentiating 3 types of consonants is necessary in order to -// forbid the use of certain combinations, such as having a second -// coeng after a coeng RO, -// The inexistent possibility of having a type 3 after another type 3 is permitted, -// eliminating it would very much complicate the table, and it does not create typing -// problems, as the case above. -// -// The table is quite complex, in order to limit the number of coeng consonants -// to 2 (by means of the table). -// -// There a peculiarity, as far as Unicode is concerned: -// - The consonant-shifter is considered in two possible different -// locations, the one considered in Unicode 3.0 and the one considered in -// Unicode 4.0. (there is a backwards compatibility problem in this standard). -// -// -// xx independent character, such as a number, punctuation sign or non-khmer char -// -// c1 Khmer consonant of type 1 or an independent vowel -// that is, a letter in which the subscript for is only under the -// base, not taking any space to the right or to the left -// -// c2 Khmer consonant of type 2, the coeng form takes space under -// and to the left of the base (only RO is of this type) -// -// c3 Khmer consonant of type 3. Its subscript form takes space under -// and to the right of the base. -// -// cs Khmer consonant shifter -// -// rb Khmer robat -// -// co coeng character (u17D2) -// -// dv dependent vowel (including split vowels, they are treated in the same way). -// even if dv is not defined above, the component that is really tested for is -// KhmerClassTable::CC_DEPENDENT_VOWEL, which is common to all dependent vowels -// -// zwj Zero Width joiner -// -// zwnj Zero width non joiner -// -// sa above sign -// -// sp post sign -// -// there are lines with equal content but for an easier understanding -// (and maybe change in the future) we did not join them -// -static const signed char khmerStateTable[][CC_COUNT] = -{ - // xx c1 c2 c3 zwnj cs rb co dv sa sp zwj - { 1, 2, 2, 2, 1, 1, 1, 6, 1, 1, 1, 2}, // 0 - ground state - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 1 - exit state (or sign to the right of the syllable) - {-1, -1, -1, -1, 3, 4, 5, 6, 16, 17, 1, -1}, // 2 - Base consonant - {-1, -1, -1, -1, -1, 4, -1, -1, 16, -1, -1, -1}, // 3 - First ZWNJ before a register shifter It can only be followed by a shifter or a vowel - {-1, -1, -1, -1, 15, -1, -1, 6, 16, 17, 1, 14}, // 4 - First register shifter - {-1, -1, -1, -1, -1, -1, -1, -1, 20, -1, 1, -1}, // 5 - Robat - {-1, 7, 8, 9, -1, -1, -1, -1, -1, -1, -1, -1}, // 6 - First Coeng - {-1, -1, -1, -1, 12, 13, -1, 10, 16, 17, 1, 14}, // 7 - First consonant of type 1 after coeng - {-1, -1, -1, -1, 12, 13, -1, -1, 16, 17, 1, 14}, // 8 - First consonant of type 2 after coeng - {-1, -1, -1, -1, 12, 13, -1, 10, 16, 17, 1, 14}, // 9 - First consonant or type 3 after ceong - {-1, 11, 11, 11, -1, -1, -1, -1, -1, -1, -1, -1}, // 10 - Second Coeng (no register shifter before) - {-1, -1, -1, -1, 15, -1, -1, -1, 16, 17, 1, 14}, // 11 - Second coeng consonant (or ind. vowel) no register shifter before - {-1, -1, -1, -1, -1, 13, -1, -1, 16, -1, -1, -1}, // 12 - Second ZWNJ before a register shifter - {-1, -1, -1, -1, 15, -1, -1, -1, 16, 17, 1, 14}, // 13 - Second register shifter - {-1, -1, -1, -1, -1, -1, -1, -1, 16, -1, -1, -1}, // 14 - ZWJ before vowel - {-1, -1, -1, -1, -1, -1, -1, -1, 16, -1, -1, -1}, // 15 - ZWNJ before vowel - {-1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 1, 18}, // 16 - dependent vowel - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 18}, // 17 - sign above - {-1, -1, -1, -1, -1, -1, -1, 19, -1, -1, -1, -1}, // 18 - ZWJ after vowel - {-1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1}, // 19 - Third coeng - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1}, // 20 - dependent vowel after a Robat -}; - - -// #define KHMER_DEBUG -#ifdef KHMER_DEBUG -#define KHDEBUG qDebug -#else -#define KHDEBUG if(0) qDebug -#endif - -// Given an input string of characters and a location in which to start looking -// calculate, using the state table, which one is the last character of the syllable -// that starts in the starting position. -// -static inline int khmer_nextSyllableBoundary(const TQString &s, int start, int end, bool *invalid) -{ - *invalid = FALSE; - const TQChar *uc = s.tqunicode() + start; - int state = 0; - int pos = start; - - while (pos < end) { - KhmerCharClass charClass = getKhmerCharClass(*uc); - if (pos == start) { - *invalid = (charClass > 0) && ! (charClass & CF_CONSONANT); - } - state = khmerStateTable[state][charClass & CF_CLASS_MASK]; - - KHDEBUG("state[%d]=%d class=%8lx (uc=%4x)", pos - start, state, - charClass, uc->tqunicode() ); - - if (state < 0) { - break; - } - ++uc; - ++pos; - } - return pos; -} - - -#ifndef TQT_NO_XFTFREETYPE -static const TQOpenType::Features khmer_features[] = { - { FT_MAKE_TAG( 'p', 'r', 'e', 'f' ), PreFormProperty }, - { FT_MAKE_TAG( 'b', 'l', 'w', 'f' ), BelowFormProperty }, - { FT_MAKE_TAG( 'a', 'b', 'v', 'f' ), AboveFormProperty }, - { FT_MAKE_TAG( 'p', 's', 't', 'f' ), PostFormProperty }, - { FT_MAKE_TAG( 'p', 'r', 'e', 's' ), PreSubstProperty }, - { FT_MAKE_TAG( 'b', 'l', 'w', 's' ), BelowSubstProperty }, - { FT_MAKE_TAG( 'a', 'b', 'v', 's' ), AboveSubstProperty }, - { FT_MAKE_TAG( 'p', 's', 't', 's' ), PostSubstProperty }, - { FT_MAKE_TAG( 'c', 'l', 'i', 'g' ), CligProperty }, - { 0, 0 } -}; -#endif - - -static bool khmer_tqshape_syllable(TQOpenType *openType, TQShaperItem *item) -{ -#ifndef TQT_NO_XFTFREETYPE - if (openType) - openType->selectScript(TQFont::Khmer, khmer_features); -#endif - // according to the specs this is the max length one can get - // ### the real value should be smaller - assert(item->length < 13); - - KHDEBUG("syllable from %d len %d, str='%s'", item->from, item->length, - item->string->mid(item->from, item->length).utf8().data()); - - int len = 0; - int syllableEnd = item->from + item->length; - unsigned short reordered[16]; - unsigned char properties[16]; - enum { - AboveForm = 0x01, - PreForm = 0x02, - PostForm = 0x04, - BelowForm = 0x08 - }; - memset(properties, 0, 16*sizeof(unsigned char)); - -#ifdef KHMER_DEBUG - qDebug("original:"); - for (int i = from; i < syllableEnd; i++) { - qDebug(" %d: %4x", i, string[i].tqunicode()); - } -#endif - - // write a pre vowel or the pre part of a split vowel first - // and look out for coeng + ro. RO is the only vowel of type 2, and - // therefore the only one that requires saving space before the base. - // - int coengRo = -1; // There is no Coeng Ro, if found this value will change - int i; - for (i = item->from; i < syllableEnd; i += 1) { - KhmerCharClass charClass = getKhmerCharClass(item->string->at(i)); - - // if a split vowel, write the pre part. In Khmer the pre part - // is the same for all split vowels, same glyph as pre vowel C_VOWEL_E - if (charClass & CF_SPLIT_VOWEL) { - reordered[len] = C_VOWEL_E; - properties[len] = PreForm; - ++len; - break; // there can be only one vowel - } - // if a vowel with pos before write it out - if (charClass & CF_POS_BEFORE) { - reordered[len] = item->string->at(i).tqunicode(); - properties[len] = PreForm; - ++len; - break; // there can be only one vowel - } - // look for coeng + ro and remember position - // works because coeng + ro is always in front of a vowel (if there is a vowel) - // and because CC_CONSONANT2 is enough to identify it, as it is the only consonant - // with this flag - if ( (charClass & CF_COENG) && (i + 1 < syllableEnd) && - ( (getKhmerCharClass(item->string->at(i+1)) & CF_CLASS_MASK) == CC_CONSONANT2) ) { - coengRo = i; - } - } - - // write coeng + ro if found - if (coengRo > -1) { - reordered[len] = C_COENG; - properties[len] = PreForm; - ++len; - reordered[len] = C_RO; - properties[len] = PreForm; - ++len; - } - - // shall we add a dotted circle? - // If in the position in which the base should be (first char in the string) there is - // a character that has the Dotted circle flag (a character that cannot be a base) - // then write a dotted circle - if (getKhmerCharClass(item->string->at(item->from)) & CF_DOTTED_CIRCLE) { - reordered[len] = C_DOTTED_CIRCLE; - ++len; - } - - // copy what is left to the output, skipping before vowels and - // coeng Ro if they are present - for (i = item->from; i < syllableEnd; i += 1) { - TQChar uc = item->string->at(i); - KhmerCharClass charClass = getKhmerCharClass(uc); - - // skip a before vowel, it was already processed - if (charClass & CF_POS_BEFORE) { - continue; - } - - // skip coeng + ro, it was already processed - if (i == coengRo) { - i += 1; - continue; - } - - switch (charClass & CF_POS_MASK) - { - case CF_POS_ABOVE : - reordered[len] = uc.tqunicode(); - properties[len] = AboveForm; - ++len; - break; - - case CF_POS_AFTER : - reordered[len] = uc.tqunicode(); - properties[len] = PostForm; - ++len; - break; - - case CF_POS_BELOW : - reordered[len] = uc.tqunicode(); - properties[len] = BelowForm; - ++len; - break; - - default: - // assign the correct flags to a coeng consonant - // Consonants of type 3 are taged as Post forms and those type 1 as below forms - if ( (charClass & CF_COENG) && i + 1 < syllableEnd ) { - unsigned char property = (getKhmerCharClass(item->string->at(i+1)) & CF_CLASS_MASK) == CC_CONSONANT3 ? - PostForm : BelowForm; - reordered[len] = uc.tqunicode(); - properties[len] = property; - ++len; - i += 1; - reordered[len] = item->string->at(i).tqunicode(); - properties[len] = property; - ++len; - break; - } - - // if a shifter is followed by an above vowel change the shifter to below form, - // an above vowel can have two possible positions i + 1 or i + 3 - // (position i+1 corresponds to tqunicode 3, position i+3 to Unicode 4) - // and there is an extra rule for C_VOWEL_AA + C_SIGN_NIKAHIT also for two - // different positions, right after the shifter or after a vowel (Unicode 4) - if ( (charClass & CF_SHIFTER) && (i + 1 < syllableEnd) ) { - if (getKhmerCharClass(item->string->at(i+1)) & CF_ABOVE_VOWEL ) { - reordered[len] = uc.tqunicode(); - properties[len] = BelowForm; - ++len; - break; - } - if (i + 2 < syllableEnd && - (item->string->at(i+1).tqunicode() == C_VOWEL_AA) && - (item->string->at(i+2).tqunicode() == C_SIGN_NIKAHIT) ) - { - reordered[len] = uc.tqunicode(); - properties[len] = BelowForm; - ++len; - break; - } - if (i + 3 < syllableEnd && (getKhmerCharClass(item->string->at(i+3)) & CF_ABOVE_VOWEL) ) { - reordered[len] = uc.tqunicode(); - properties[len] = BelowForm; - ++len; - break; - } - if (i + 4 < syllableEnd && - (item->string->at(i+3).tqunicode() == C_VOWEL_AA) && - (item->string->at(i+4).tqunicode() == C_SIGN_NIKAHIT) ) - { - reordered[len] = uc.tqunicode(); - properties[len] = BelowForm; - ++len; - break; - } - } - - // default - any other characters - reordered[len] = uc.tqunicode(); - ++len; - break; - } // switch - } // for - - if (item->font->stringToCMap((const TQChar *)reordered, len, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - - KHDEBUG("after shaping: len=%d", len); - for (i = 0; i < len; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - KHDEBUG(" %d: %4x property=%x", i, reordered[i], properties[i]); - } - - // now we have the syllable in the right order, and can start running it through open type. - -#ifndef TQT_NO_XFTFREETYPE - if (openType) { - unsigned short logClusters[16]; - for (int i = 0; i < len; ++i) - logClusters[i] = i; - - uint where[16]; - - for (int i = 0; i < len; ++i) { - where[i] = ~(PreSubstProperty - | BelowSubstProperty - | AboveSubstProperty - | PostSubstProperty - | CligProperty - | PositioningProperties); - if (properties[i] == PreForm) - where[i] &= ~PreFormProperty; - else if (properties[i] == BelowForm) - where[i] &= ~BelowFormProperty; - else if (properties[i] == AboveForm) - where[i] &= ~AboveFormProperty; - else if (properties[i] == PostForm) - where[i] &= ~PostFormProperty; - } - - openType->tqshape(item, where); - if (!openType->positionAndAdd(item, FALSE)) - return FALSE; - } else -#endif - { - KHDEBUG("Not using openType"); - TQ_UNUSED(openType); - } - - item->attributes[0].clusterStart = TRUE; - return TRUE; -} - -static bool khmer_tqshape(TQShaperItem *item) -{ - assert(item->script == TQFont::Khmer); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType && !openType->supportsScript(item->script)) - openType = 0; -#else - TQOpenType *openType = 0; -#endif - unsigned short *logClusters = item->log_clusters; - - TQShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->from; - int end = sstart + item->length; - KHDEBUG("khmer_tqshape: from %d length %d", item->from, item->length); - while (sstart < end) { - bool invalid; - int send = khmer_nextSyllableBoundary(*item->string, sstart, end, &invalid); - KHDEBUG("syllable from %d, length %d, invalid=%s", sstart, send-sstart, - invalid ? "TRUE" : "FALSE"); - syllable.from = sstart; - syllable.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!khmer_tqshape_syllable(openType, &syllable)) { - KHDEBUG("syllable shaping failed, syllable requests %d glyphs", syllable.num_glyphs); - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - item->has_positioning |= syllable.has_positioning; - - // fix logcluster array - KHDEBUG("syllable:"); - int i; - for (i = first_glyph; i < first_glyph + syllable.num_glyphs; ++i) - KHDEBUG(" %d -> glyph %x", i, item->glyphs[i]); - KHDEBUG(" logclusters:"); - for (i = sstart; i < send; ++i) { - KHDEBUG(" %d -> glyph %d", i, first_glyph); - logClusters[i-item->from] = first_glyph; - } - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; -} - -static void khmer_attributes( int script, const TQString &text, int from, int len, TQCharAttributes *attributes ) -{ - TQ_UNUSED(script); - - int end = from + len; - const TQChar *uc = text.tqunicode() + from; - attributes += from; - int i = 0; - while ( i < len ) { - bool invalid; - int boundary = khmer_nextSyllableBoundary( text, from+i, end, &invalid ) - from; - - attributes[i].charStop = TRUE; - - if ( boundary > len-1 ) boundary = len; - i++; - while ( i < boundary ) { - attributes[i].charStop = FALSE; - ++uc; - ++i; - } - assert( i == boundary ); - } -} - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Myanmar -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - -enum MymrCharClassValues -{ - Mymr_CC_RESERVED = 0, - Mymr_CC_CONSONANT = 1, /* Consonant of type 1, that has subscript form */ - Mymr_CC_CONSONANT2 = 2, /* Consonant of type 2, that has no subscript form */ - Mymr_CC_NGA = 3, /* Consonant NGA */ - Mymr_CC_YA = 4, /* Consonant YA */ - Mymr_CC_RA = 5, /* Consonant RA */ - Mymr_CC_WA = 6, /* Consonant WA */ - Mymr_CC_HA = 7, /* Consonant HA */ - Mymr_CC_IND_VOWEL = 8, /* Independent vowel */ - Mymr_CC_ZERO_WIDTH_NJ_MARK = 9, /* Zero Width non joiner character (0x200C) */ - Mymr_CC_VIRAMA = 10, /* Subscript consonant combining character */ - Mymr_CC_PRE_VOWEL = 11, /* Dependent vowel, prebase (Vowel e) */ - Mymr_CC_BELOW_VOWEL = 12, /* Dependent vowel, prebase (Vowel u, uu) */ - Mymr_CC_ABOVE_VOWEL = 13, /* Dependent vowel, prebase (Vowel i, ii, ai) */ - Mymr_CC_POST_VOWEL = 14, /* Dependent vowel, prebase (Vowel aa) */ - Mymr_CC_SIGN_ABOVE = 15, - Mymr_CC_SIGN_BELOW = 16, - Mymr_CC_SIGN_AFTER = 17, - Mymr_CC_ZERO_WIDTH_J_MARK = 18, /* Zero width joiner character */ - Mymr_CC_COUNT = 19 /* This is the number of character classes */ -}; - -enum MymrCharClassFlags -{ - Mymr_CF_CLASS_MASK = 0x0000FFFF, - - Mymr_CF_CONSONANT = 0x01000000, /* flag to speed up comparing */ - Mymr_CF_MEDIAL = 0x02000000, /* flag to speed up comparing */ - Mymr_CF_IND_VOWEL = 0x04000000, /* flag to speed up comparing */ - Mymr_CF_DEP_VOWEL = 0x08000000, /* flag to speed up comparing */ - Mymr_CF_DOTTED_CIRCLE = 0x10000000, /* add a dotted circle if a character with this flag is the first in a syllable */ - Mymr_CF_VIRAMA = 0x20000000, /* flag to speed up comparing */ - - /* position flags */ - Mymr_CF_POS_BEFORE = 0x00080000, - Mymr_CF_POS_BELOW = 0x00040000, - Mymr_CF_POS_ABOVE = 0x00020000, - Mymr_CF_POS_AFTER = 0x00010000, - Mymr_CF_POS_MASK = 0x000f0000, - - Mymr_CF_AFTER_KINZI = 0x00100000 -}; - -/* Characters that get refrered to by name */ -enum MymrChar -{ - Mymr_C_SIGN_ZWNJ = 0x200C, - Mymr_C_SIGN_ZWJ = 0x200D, - Mymr_C_DOTTED_CIRCLE = 0x25CC, - Mymr_C_RA = 0x101B, - Mymr_C_YA = 0x101A, - Mymr_C_NGA = 0x1004, - Mymr_C_VOWEL_E = 0x1031, - Mymr_C_VIRAMA = 0x1039 -}; - -enum -{ - Mymr_xx = Mymr_CC_RESERVED, - Mymr_c1 = Mymr_CC_CONSONANT | Mymr_CF_CONSONANT | Mymr_CF_POS_BELOW, - Mymr_c2 = Mymr_CC_CONSONANT2 | Mymr_CF_CONSONANT, - Mymr_ng = Mymr_CC_NGA | Mymr_CF_CONSONANT | Mymr_CF_POS_ABOVE, - Mymr_ya = Mymr_CC_YA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_AFTER | Mymr_CF_AFTER_KINZI, - Mymr_ra = Mymr_CC_RA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BEFORE, - Mymr_wa = Mymr_CC_WA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BELOW, - Mymr_ha = Mymr_CC_HA | Mymr_CF_CONSONANT | Mymr_CF_MEDIAL | Mymr_CF_POS_BELOW, - Mymr_id = Mymr_CC_IND_VOWEL | Mymr_CF_IND_VOWEL, - Mymr_vi = Mymr_CC_VIRAMA | Mymr_CF_VIRAMA | Mymr_CF_POS_ABOVE | Mymr_CF_DOTTED_CIRCLE, - Mymr_dl = Mymr_CC_PRE_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_BEFORE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_db = Mymr_CC_BELOW_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_BELOW | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_da = Mymr_CC_ABOVE_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_ABOVE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_dr = Mymr_CC_POST_VOWEL | Mymr_CF_DEP_VOWEL | Mymr_CF_POS_AFTER | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI, - Mymr_sa = Mymr_CC_SIGN_ABOVE | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_POS_ABOVE | Mymr_CF_AFTER_KINZI, - Mymr_sb = Mymr_CC_SIGN_BELOW | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_POS_BELOW | Mymr_CF_AFTER_KINZI, - Mymr_sp = Mymr_CC_SIGN_AFTER | Mymr_CF_DOTTED_CIRCLE | Mymr_CF_AFTER_KINZI -}; - - -typedef int MymrCharClass; - - -static const MymrCharClass mymrCharClasses[] = -{ - Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_ng, Mymr_c1, Mymr_c1, Mymr_c1, - Mymr_c1, Mymr_c1, Mymr_c2, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, /* 1000 - 100F */ - Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, Mymr_c1, - Mymr_c1, Mymr_c1, Mymr_ya, Mymr_ra, Mymr_c1, Mymr_wa, Mymr_c1, Mymr_ha, /* 1010 - 101F */ - Mymr_c2, Mymr_c2, Mymr_xx, Mymr_id, Mymr_id, Mymr_id, Mymr_id, Mymr_id, - Mymr_xx, Mymr_id, Mymr_id, Mymr_xx, Mymr_dr, Mymr_da, Mymr_da, Mymr_db, /* 1020 - 102F */ - Mymr_db, Mymr_dl, Mymr_da, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_sa, Mymr_sb, - Mymr_sp, Mymr_vi, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1030 - 103F */ - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1040 - 104F */ - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, - Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, Mymr_xx, /* 1050 - 105F */ -}; - -static MymrCharClass -getMyanmarCharClass (const TQChar &ch) -{ - if (ch.tqunicode() == Mymr_C_SIGN_ZWJ) - return Mymr_CC_ZERO_WIDTH_J_MARK; - - if (ch.tqunicode() == Mymr_C_SIGN_ZWNJ) - return Mymr_CC_ZERO_WIDTH_NJ_MARK; - - if (ch.tqunicode() < 0x1000 || ch.tqunicode() > 0x105f) - return Mymr_CC_RESERVED; - - return mymrCharClasses[ch.tqunicode() - 0x1000]; -} - -static const signed char mymrStateTable[][Mymr_CC_COUNT] = -{ -// xx c1, c2 ng ya ra wa ha id zwnj vi dl db da dr sa sb sp zwj - { 1, 4, 4, 2, 4, 4, 4, 4, 24, 1, 27, 17, 18, 19, 20, 21, 1, 1, 4}, // 0 - ground state - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 1 - exit state (or sp to the right of the syllable) - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3, 17, 18, 19, 20, 21, -1, -1, 4}, // 2 - NGA - {-1, 4, 4, 4, 4, 4, 4, 4, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 3 - Virama after NGA - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, 17, 18, 19, 20, 21, 1, 1, -1}, // 4 - Base consonant - {-2, 6, -2, -2, 7, 8, 9, 10, -2, 23, -2, -2, -2, -2, -2, -2, -2, -2, -2}, // 5 - First virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 25, 17, 18, 19, 20, 21, -1, -1, -1}, // 6 - c1 after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, // 7 - ya after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, // 8 - ra after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, -1, -1}, // 9 - wa after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, // 10 - ha after virama - {-1, -1, -1, -1, 7, 8, 9, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 11 - Virama after NGA+zwj - {-2, -2, -2, -2, -2, -2, 13, 14, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, // 12 - Second virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 15, 17, 18, 19, 20, 21, -1, -1, -1}, // 13 - wa after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, // 14 - ha after virama - {-2, -2, -2, -2, -2, -2, -2, 16, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, // 15 - Third virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, 18, 19, 20, 21, -1, -1, -1}, // 16 - ha after virama - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 20, 21, 1, 1, -1}, // 17 - dl, Dependent vowel e - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, -1, 21, 1, 1, -1}, // 18 - db, Dependent vowel u,uu - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1}, // 19 - da, Dependent vowel i,ii,ai - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 22, -1, -1, -1, -1, -1, 1, 1, -1}, // 20 - dr, Dependent vowel aa - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1}, // 21 - sa, Sign anusvara - {-1, -1, -1, -1, -1, -1, -1, -1, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 22 - atha - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1}, // 23 - zwnj for atha - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1}, // 24 - Independent vowel - {-2, -2, -2, -2, 26, 26, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2}, // 25 - Virama after subscript consonant - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 17, 18, 19, 20, 21, -1, 1, -1}, // 26 - ra/ya after subscript consonant + virama - {-1, 6, -1, -1, 7, 8, 9, 10, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 27 - Virama after ground state -// exit state -2 is for invalid order of medials and combination of invalids -// with virama where virama should treat as start of next syllable -}; - - - -// #define MYANMAR_DEBUG -#ifdef MYANMAR_DEBUG -#define MMDEBUG qDebug -#else -#define MMDEBUG if(0) qDebug -#endif - -// Given an input string of characters and a location in which to start looking -// calculate, using the state table, which one is the last character of the syllable -// that starts in the starting position. -// -static inline int myanmar_nextSyllableBoundary(const TQString &s, int start, int end, bool *invalid) -{ - *invalid = FALSE; - const TQChar *uc = s.tqunicode() + start; - int state = 0; - int pos = start; - - while (pos < end) { - MymrCharClass charClass = getMyanmarCharClass(*uc); - state = mymrStateTable[state][charClass & Mymr_CF_CLASS_MASK]; - if (pos == start) - *invalid = charClass & Mymr_CF_DOTTED_CIRCLE; - - MMDEBUG("state[%d]=%d class=%8x (uc=%4x)", pos - start, state, charClass, uc->tqunicode() ); - - if (state < 0) { - if (state < -1) - --pos; - break; - } - ++uc; - ++pos; - } - return pos; -} - - -#ifndef TQT_NO_XFTFREETYPE -// ###### might have to change order of above and below forms and substitutions, -// but according to Unicode below comes before above -static const TQOpenType::Features myanmar_features[] = { - { FT_MAKE_TAG( 'p', 'r', 'e', 'f' ), PreFormProperty }, - { FT_MAKE_TAG( 'b', 'l', 'w', 'f' ), BelowFormProperty }, - { FT_MAKE_TAG( 'a', 'b', 'v', 'f' ), AboveFormProperty }, - { FT_MAKE_TAG( 'p', 's', 't', 'f' ), PostFormProperty }, - { FT_MAKE_TAG( 'p', 'r', 'e', 's' ), PreSubstProperty }, - { FT_MAKE_TAG( 'b', 'l', 'w', 's' ), BelowSubstProperty }, - { FT_MAKE_TAG( 'a', 'b', 'v', 's' ), AboveSubstProperty }, - { FT_MAKE_TAG( 'p', 's', 't', 's' ), PostSubstProperty }, - { FT_MAKE_TAG( 'r', 'l', 'i', 'g' ), CligProperty }, // Myanmar1 uses this instead of the other features - { 0, 0 } -}; -#endif - - -// Visual order before shaping should be: -// -// [Vowel Mark E] -// [Virama + Medial Ra] -// [Base] -// [Virama + Consonant] -// [Nga + Virama] (Kinzi) ### should probably come before post forms (medial ya) -// [Vowels] -// [Marks] -// -// This means that we can keep the logical order apart from having to -// move the pre vowel, medial ra and kinzi - -static bool myanmar_tqshape_syllable(TQOpenType *openType, TQShaperItem *item, bool invalid) -{ -#ifndef TQT_NO_XFTFREETYPE - if (openType) - openType->selectScript(TQFont::Myanmar, myanmar_features); -#endif - // according to the table the max length of a syllable should be around 14 chars - assert(item->length < 32); - - MMDEBUG("\nsyllable from %d len %d, str='%s'", item->from, item->length, - item->string->mid(item->from, item->length).utf8().data()); - - const TQChar *uc = item->string->tqunicode() + item->from; -#ifdef MYANMAR_DEBUG - qDebug("original:"); - for (int i = 0; i < item->length; i++) { - qDebug(" %d: %4x", i, uc[i].tqunicode()); - } -#endif - int vowel_e = -1; - int kinzi = -1; - int medial_ra = -1; - int base = -1; - int i; - for (i = 0; i < item->length; ++i) { - ushort chr = uc[i].tqunicode(); - - if (chr == Mymr_C_VOWEL_E) { - vowel_e = i; - continue; - } - if (i == 0 - && chr == Mymr_C_NGA - && i + 2 < item->length - && uc[i+1].tqunicode() == Mymr_C_VIRAMA) { - int mc = getMyanmarCharClass(uc[i+2]); - //MMDEBUG("maybe kinzi: mc=%x", mc); - if ((mc & Mymr_CF_CONSONANT) == Mymr_CF_CONSONANT) { - kinzi = i; - continue; - } - } - if (base >= 0 - && chr == Mymr_C_VIRAMA - && i + 1 < item->length - && uc[i+1].tqunicode() == Mymr_C_RA) { - medial_ra = i; - continue; - } - if (base < 0) - base = i; - } - - MMDEBUG("\n base=%d, vowel_e=%d, kinzi=%d, medial_ra=%d", base, vowel_e, kinzi, medial_ra); - int len = 0; - unsigned short reordered[32]; - unsigned char properties[32]; - enum { - AboveForm = 0x01, - PreForm = 0x02, - PostForm = 0x04, - BelowForm = 0x08 - }; - memset(properties, 0, 32*sizeof(unsigned char)); - - // write vowel_e if found - if (vowel_e >= 0) { - reordered[0] = Mymr_C_VOWEL_E; - len = 1; - } - // write medial_ra - if (medial_ra >= 0) { - reordered[len] = Mymr_C_VIRAMA; - reordered[len+1] = Mymr_C_RA; - properties[len] = PreForm; - properties[len+1] = PreForm; - len += 2; - } - - // shall we add a dotted circle? - // If in the position in which the base should be (first char in the string) there is - // a character that has the Dotted circle flag (a character that cannot be a base) - // then write a dotted circle - if (invalid) { - reordered[len] = C_DOTTED_CIRCLE; - ++len; - } - - bool lastWasVirama = FALSE; - int basePos = -1; - // copy the rest of the syllable to the output, inserting the kinzi - // at the correct place - for (i = 0; i < item->length; ++i) { - if (i == vowel_e) - continue; - if (i == medial_ra || i == kinzi) { - ++i; - continue; - } - - ushort chr = uc[i].tqunicode(); - MymrCharClass cc = getMyanmarCharClass(uc[i]); - if (kinzi >= 0 && i > base && (cc & Mymr_CF_AFTER_KINZI)) { - reordered[len] = Mymr_C_NGA; - reordered[len+1] = Mymr_C_VIRAMA; - properties[len-1] = AboveForm; - properties[len] = AboveForm; - len += 2; - kinzi = -1; - } - - if (lastWasVirama) { - int prop = 0; - switch(cc & Mymr_CF_POS_MASK) { - case Mymr_CF_POS_BEFORE: - prop = PreForm; - break; - case Mymr_CF_POS_BELOW: - prop = BelowForm; - break; - case Mymr_CF_POS_ABOVE: - prop = AboveForm; - break; - case Mymr_CF_POS_AFTER: - prop = PostForm; - break; - default: - break; - } - properties[len-1] = prop; - properties[len] = prop; - if(basePos >= 0 && basePos == len-2) - properties[len-2] = prop; - } - lastWasVirama = (chr == Mymr_C_VIRAMA); - if(i == base) - basePos = len; - - if ((chr != Mymr_C_SIGN_ZWNJ && chr != Mymr_C_SIGN_ZWJ) || !len) { - reordered[len] = chr; - ++len; - } - } - if (kinzi >= 0) { - reordered[len] = Mymr_C_NGA; - reordered[len+1] = Mymr_C_VIRAMA; - properties[len] = AboveForm; - properties[len+1] = AboveForm; - len += 2; - } - - if (item->font->stringToCMap((const TQChar *)reordered, len, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - - MMDEBUG("after shaping: len=%d", len); - for (i = 0; i < len; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - MMDEBUG(" %d: %4x property=%x", i, reordered[i], properties[i]); - } - - // now we have the syllable in the right order, and can start running it through open type. - -#ifndef TQT_NO_XFTFREETYPE - if (openType) { - unsigned short logClusters[32]; - for (int i = 0; i < len; ++i) - logClusters[i] = i; - - uint where[32]; - - for (int i = 0; i < len; ++i) { - where[i] = ~(PreSubstProperty - | BelowSubstProperty - | AboveSubstProperty - | PostSubstProperty - | CligProperty - | PositioningProperties); - if (properties[i] == PreForm) - where[i] &= ~PreFormProperty; - else if (properties[i] == BelowForm) - where[i] &= ~BelowFormProperty; - else if (properties[i] == AboveForm) - where[i] &= ~AboveFormProperty; - else if (properties[i] == PostForm) - where[i] &= ~PostFormProperty; - } - - openType->tqshape(item, where); - if (!openType->positionAndAdd(item, FALSE)) - return FALSE; - } else -#endif - { - MMDEBUG("Not using openType"); - TQ_UNUSED(openType); - } - - item->attributes[0].clusterStart = TRUE; - return TRUE; -} - -static bool myanmar_tqshape(TQShaperItem *item) -{ - assert(item->script == TQFont::Myanmar); - -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType && !openType->supportsScript(item->script)) - openType = 0; -#else - TQOpenType *openType = 0; -#endif - unsigned short *logClusters = item->log_clusters; - - TQShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->from; - int end = sstart + item->length; - MMDEBUG("myanmar_tqshape: from %d length %d", item->from, item->length); - while (sstart < end) { - bool invalid; - int send = myanmar_nextSyllableBoundary(*item->string, sstart, end, &invalid); - MMDEBUG("syllable from %d, length %d, invalid=%s", sstart, send-sstart, - invalid ? "TRUE" : "FALSE"); - syllable.from = sstart; - syllable.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!myanmar_tqshape_syllable(openType, &syllable, invalid)) { - MMDEBUG("syllable shaping failed, syllable requests %d glyphs", syllable.num_glyphs); - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - item->has_positioning |= syllable.has_positioning; - - // fix logcluster array - MMDEBUG("syllable:"); - int i; - for (i = first_glyph; i < first_glyph + syllable.num_glyphs; ++i) - MMDEBUG(" %d -> glyph %x", i, item->glyphs[i]); - MMDEBUG(" logclusters:"); - for (i = sstart; i < send; ++i) { - MMDEBUG(" %d -> glyph %d", i, first_glyph); - logClusters[i-item->from] = first_glyph; - } - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; -} - -static void myanmar_attributes( int script, const TQString &text, int from, int len, TQCharAttributes *attributes ) -{ - TQ_UNUSED(script); - - int end = from + len; - const TQChar *uc = text.tqunicode() + from; - attributes += from; - int i = 0; - while ( i < len ) { - bool invalid; - int boundary = myanmar_nextSyllableBoundary( text, from+i, end, &invalid ) - from; - - attributes[i].charStop = TRUE; - attributes[i].softBreak = TRUE; - - if ( boundary > len-1 ) boundary = len; - i++; - while ( i < boundary ) { - attributes[i].charStop = FALSE; - attributes[i].softBreak = FALSE; - ++uc; - ++i; - } - assert( i == boundary ); - } -} - -// -------------------------------------------------------------------------------------------------------------------------------------------- -// -// Hangul -// -// -------------------------------------------------------------------------------------------------------------------------------------------- - -// Hangul is a syllable based script. Unicode reserves a large range -// for precomposed hangul, where syllables are already precomposed to -// their final glyph tqshape. In addition, a so called jamo range is -// defined, that can be used to express old Hangul. Modern hangul -// syllables can also be expressed as jamo, and should be composed -// into syllables. The operation is rather simple and mathematical. - -// Every hangul jamo is classified as being either a Leading consonant -// (L), and intermediat Vowel (V) or a trailing consonant (T). Modern -// hangul syllables (the ones in the precomposed area can be of type -// LV or LVT. -// -// Syllable breaks do _not_ occur between: -// -// L L, V or precomposed -// V, LV V, T -// LVT, T T -// -// A standard syllable is of the form L+V+T*. The above rules allow -// nonstandard syllables L*V*T*. To transform them into standard -// syllables fill characers L_f and V_f can be inserted. - -enum { - Hangul_SBase = 0xac00, - Hangul_LBase = 0x1100, - Hangul_VBase = 0x1161, - Hangul_TBase = 0x11a7, - Hangul_SCount = 11172, - Hangul_LCount = 19, - Hangul_VCount = 21, - Hangul_TCount = 28, - Hangul_NCount = 21*28 -}; - -static inline bool hangul_isPrecomposed(unsigned short uc) { - return (uc >= Hangul_SBase && uc < Hangul_SBase + Hangul_SCount); -} - -static inline bool hangul_isLV(unsigned short uc) { - return ((uc - Hangul_SBase) % Hangul_TCount == 0); -} - -enum HangulType { - L, - V, - T, - LV, - LVT, - X -}; - -static inline HangulType hangul_type(unsigned short uc) { - if (uc > Hangul_SBase && uc < Hangul_SBase + Hangul_SCount) - return hangul_isLV(uc) ? LV : LVT; - if (uc < Hangul_LBase || uc > 0x11ff) - return X; - if (uc < Hangul_VBase) - return L; - if (uc < Hangul_TBase) - return V; - return T; -} - -static int hangul_nextSyllableBoundary(const TQString &s, int start, int end) -{ - const TQChar *uc = s.tqunicode() + start; - - HangulType state = hangul_type(uc->tqunicode()); - int pos = 1; - - while (pos < end - start) { - HangulType newState = hangul_type(uc[pos].tqunicode()); - switch(newState) { - case X: - goto finish; - case L: - case V: - case T: - if (state > newState) - goto finish; - state = newState; - break; - case LV: - if (state > L) - goto finish; - state = V; - break; - case LVT: - if (state > L) - goto finish; - state = T; - } - ++pos; - } - - finish: - return start+pos; -} - -#ifndef TQT_NO_XFTFREETYPE -static const TQOpenType::Features hangul_features [] = { - { FT_MAKE_TAG('c', 'c', 'm', 'p'), CcmpProperty }, - { FT_MAKE_TAG('l', 'j', 'm', 'o'), CcmpProperty }, - { FT_MAKE_TAG('j', 'j', 'm', 'o'), CcmpProperty }, - { FT_MAKE_TAG('t', 'j', 'm', 'o'), CcmpProperty }, - { 0, 0 } -}; -#endif - -static bool hangul_tqshape_syllable(TQOpenType *openType, TQShaperItem *item) -{ - TQ_UNUSED(openType) - const TQChar *ch = item->string->tqunicode() + item->from; - - int i; - unsigned short composed = 0; - // see if we can compose the syllable into a modern hangul - if (item->length == 2) { - int LIndex = ch[0].tqunicode() - Hangul_LBase; - int VIndex = ch[1].tqunicode() - Hangul_VBase; - if (LIndex >= 0 && LIndex < Hangul_LCount && - VIndex >= 0 && VIndex < Hangul_VCount) - composed = (LIndex * Hangul_VCount + VIndex) * Hangul_TCount + Hangul_SBase; - } else if (item->length == 3) { - int LIndex = ch[0].tqunicode() - Hangul_LBase; - int VIndex = ch[1].tqunicode() - Hangul_VBase; - int TIndex = ch[2].tqunicode() - Hangul_TBase; - if (LIndex >= 0 && LIndex < Hangul_LCount && - VIndex >= 0 && VIndex < Hangul_VCount && - TIndex >= 0 && TIndex < Hangul_TCount) - composed = (LIndex * Hangul_VCount + VIndex) * Hangul_TCount + TIndex + Hangul_SBase; - } - - - int len = item->length; - TQChar c(composed); - - // ### icc says 'chars' is unused - // const TQChar *chars = ch; - - // if we have a modern hangul use the composed form - if (composed) { - // chars = &c; - len = 1; - } - - if (item->font->stringToCMap(ch, len, item->glyphs, item->advances, - &item->num_glyphs, item->flags & TQTextEngine::RightToLeft) != TQFontEngine::NoError) - return FALSE; - for (i = 0; i < len; i++) { - item->attributes[i].mark = FALSE; - item->attributes[i].clusterStart = FALSE; - item->attributes[i].justification = 0; - item->attributes[i].zeroWidth = FALSE; - IDEBUG(" %d: %4x", i, ch[i].tqunicode()); - } - -#ifndef TQT_NO_XFTFREETYPE - if (openType && !composed) { - - TQVarLengthArray<unsigned short> logClusters(len); - for (i = 0; i < len; ++i) - logClusters[i] = i; - item->log_clusters = logClusters.data(); - - openType->tqshape(item); - if (!openType->positionAndAdd(item, FALSE)) - return FALSE; - - } -#endif - - item->attributes[0].clusterStart = TRUE; - return TRUE; -} - -static bool hangul_tqshape(TQShaperItem *item) -{ - TQ_ASSERT(item->script == TQFont::Hangul); - - const TQChar *uc = item->string->tqunicode() + item->from; - - bool allPrecomposed = TRUE; - for (int i = 0; i < item->length; ++i) { - if (!hangul_isPrecomposed(uc[i].tqunicode())) { - allPrecomposed = FALSE; - break; - } - } - - if (!allPrecomposed) { -#ifndef TQT_NO_XFTFREETYPE - TQOpenType *openType = item->font->openType(); - if (openType && !openType->supportsScript(item->script)) - openType = 0; - if (openType) - openType->selectScript(TQFont::Hangul, hangul_features); -#else - TQOpenType *openType = 0; -#endif - - unsigned short *logClusters = item->log_clusters; - - TQShaperItem syllable = *item; - int first_glyph = 0; - - int sstart = item->from; - int end = sstart + item->length; - while (sstart < end) { - int send = hangul_nextSyllableBoundary(*(item->string), sstart, end); - - syllable.from = sstart; - syllable.length = send-sstart; - syllable.glyphs = item->glyphs + first_glyph; - syllable.offsets = item->offsets + first_glyph; - syllable.advances = item->advances + first_glyph; - syllable.attributes = item->attributes + first_glyph; - syllable.num_glyphs = item->num_glyphs - first_glyph; - if (!hangul_tqshape_syllable(openType, &syllable)) { - item->num_glyphs += syllable.num_glyphs; - return FALSE; - } - item->has_positioning |= syllable.has_positioning; - // fix logcluster array - for (int i = sstart; i < send; ++i) - logClusters[i-item->from] = first_glyph; - sstart = send; - first_glyph += syllable.num_glyphs; - } - item->num_glyphs = first_glyph; - return TRUE; - } - - return basic_tqshape(item); -} - -static void hangul_attributes(int script, const TQString &text, int from, int len, TQCharAttributes *attributes) -{ - TQ_UNUSED(script); - - int end = from + len; - const TQChar *uc = text.tqunicode() + from; - attributes += from; - int i = 0; - while (i < len) { - int boundary = hangul_nextSyllableBoundary(text, from+i, end) - from; - - attributes[i].charStop = TRUE; - - if (boundary > len-1) boundary = len; - i++; - while (i < boundary) { - attributes[i].charStop = FALSE; - ++uc; - ++i; - } - assert(i == boundary); - } -} - -// ----------------------------------------------------------------------------------------------- -// -// The script engine jump table -// -// ----------------------------------------------------------------------------------------------- - -const q_scriptEngine scriptEngines[] = { - // Latin, - { basic_tqshape, 0 }, - // Greek, - { basic_tqshape, 0 }, - // Cyrillic, - { basic_tqshape, 0 }, - // Armenian, - { basic_tqshape, 0 }, - // Georgian, - { basic_tqshape, 0 }, - // Runic, - { basic_tqshape, 0 }, - // Ogham, - { basic_tqshape, 0 }, - // SpacingModifiers, - { basic_tqshape, 0 }, - // CombiningMarks, - { basic_tqshape, 0 }, - - // // Middle Eastern Scripts - // Hebrew, - { hebrew_tqshape, 0 }, - // Arabic, - { arabic_tqshape, 0 }, - // Syriac, - { syriac_tqshape, 0 }, - // Thaana, - { thaana_tqshape, 0 }, - - // // South and Southeast Asian Scripts - // Devanagari, - { indic_tqshape, indic_attributes }, - // Bengali, - { indic_tqshape, indic_attributes }, - // Gurmukhi, - { indic_tqshape, indic_attributes }, - // Gujarati, - { indic_tqshape, indic_attributes }, - // Oriya, - { indic_tqshape, indic_attributes }, - // Tamil, - { indic_tqshape, indic_attributes }, - // Telugu, - { indic_tqshape, indic_attributes }, - // Kannada, - { indic_tqshape, indic_attributes }, - // Malayalam, - { indic_tqshape, indic_attributes }, - // Sinhala, - { indic_tqshape, indic_attributes }, - // Thai, - { basic_tqshape, thai_attributes }, - // Lao, - { basic_tqshape, thai_attributes }, - // Tibetan, - { tibetan_tqshape, tibetan_attributes }, - // Myanmar, - { myanmar_tqshape, myanmar_attributes }, - // Khmer, - { khmer_tqshape, khmer_attributes }, - - // // East Asian Scripts - // Han, - { basic_tqshape, 0 }, - // Hiragana, - { basic_tqshape, 0 }, - // Katakana, - { basic_tqshape, 0 }, - // Hangul, - { hangul_tqshape, hangul_attributes }, - // Bopomofo, - { basic_tqshape, 0 }, - // Yi, - { basic_tqshape, 0 }, - - // // Additional Scripts - // Ethiopic, - { basic_tqshape, 0 }, - // Cherokee, - { basic_tqshape, 0 }, - // CanadianAboriginal, - { basic_tqshape, 0 }, - // Mongolian, - { basic_tqshape, 0 }, - - // // Symbols - // CurrencySymbols, - { basic_tqshape, 0 }, - // LetterlikeSymbols, - { basic_tqshape, 0 }, - // NumberForms, - { basic_tqshape, 0 }, - // MathematicalOperators, - { basic_tqshape, 0 }, - // TechnicalSymbols, - { basic_tqshape, 0 }, - // GeometricSymbols, - { basic_tqshape, 0 }, - // MiscellaneousSymbols, - { basic_tqshape, 0 }, - // EnclosedAndSquare, - { basic_tqshape, 0 }, - // Braille, - { basic_tqshape, 0 }, - - // Unicode, - { basic_tqshape, 0 }, - //Tagalog, - { basic_tqshape, 0 }, - //Hanunoo, - { basic_tqshape, 0 }, - //Buhid, - { basic_tqshape, 0 }, - //Tagbanwa, - { basic_tqshape, 0 }, - // KatakanaHalfWidth - { basic_tqshape, 0 }, - // Limbu - { basic_tqshape, 0 }, - // TaiLe - { basic_tqshape, 0 } -}; 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