Diffstat (limited to 'inputmethods/handwriting/qimpencombining.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | inputmethods/handwriting/qimpencombining.cpp | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/inputmethods/handwriting/qimpencombining.cpp b/inputmethods/handwriting/qimpencombining.cpp new file mode 100644 index 0000000..30459e7 --- a/dev/null +++ b/inputmethods/handwriting/qimpencombining.cpp @@ -0,0 +1,141 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qtopia Environment. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#include <qfile.h> +#include <qtl.h> +#include <math.h> +#include <limits.h> +#include <qdatastream.h> +#include "qimpencombining.h" + +static unsigned int combiningSymbols[] = { '\\', '/', '^', '~', '\"', 'o' }; +static unsigned int combiningChars[][7] = { + // \ / ^ ~ " + { 'A', 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5 }, + { 'O', 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x0000 }, + { 'U', 0x00D9, 0x00DA, 0x00DB, 0x0000, 0x00DC, 0x0000 }, + { 'E', 0x00C8, 0x00C9, 0x00CA, 0x0000, 0x00CB, 0x0000 }, + { 'I', 0x00CC, 0x00CD, 0x00CE, 0x0000, 0x00CF, 0x0000 }, + { 'a', 0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5 }, + { 'e', 0x00E8, 0x00E9, 0x00EA, 0x0000, 0x00EB, 0x0000 }, + { 'i', 0x00EC, 0x00ED, 0x00EE, 0x0000, 0x00EF, 0x0000 }, + { 'n', 0x0000, 0x0000, 0x0000, 0x00F1, 0x0000, 0x0000 }, + { 'o', 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x0000 }, + { 'u', 0x00F9, 0x00FA, 0x00FB, 0x0000, 0x00FC, 0x0000 }, + { 'y', 0x0000, 0x00FD, 0x0000, 0x0000, 0x00FF, 0x0000 }, + { 0, 0, 0, 0, 0, 0, 0 } +}; + + +QIMPenCombining::QIMPenCombining() +{ +} + +QIMPenCombining::QIMPenCombining( const QString &fn ) + : QIMPenCharSet( fn ) +{ +} + +void QIMPenCombining::addCombined( QIMPenCharSet *cs ) +{ + unsigned int count = cs->count(); + QIMPenCharIterator it( cs->characters() ); + for ( ; it.current() && count; ++it, --count ) { + QIMPenChar *pc = it.current(); + if ( pc->testFlag( QIMPenChar::Deleted ) ) + continue; + int charIdx = findCombining( pc->character() ); + if ( charIdx < 0 ) + continue; + for ( int i = 0; i < 6; i++ ) { + if ( combiningChars[charIdx][i+1] ) { + QIMPenCharIterator cit( chars ); + for ( ; cit.current(); ++cit ) { + QIMPenChar *accentPc = cit.current(); + if ( accentPc->character() == combiningSymbols[i] ) { + QIMPenChar *combined = combine( pc, accentPc ); + combined->setCharacter( combiningChars[charIdx][i+1] ); + cs->addChar( combined ); + } + } + } + } + } +} + +int QIMPenCombining::findCombining( unsigned int ch ) const +{ + int i = 0; + while ( combiningChars[i][0] ) { + if ( combiningChars[i][0] == ch ) + return i; + i++; + } + + return -1; +} + +QIMPenChar *QIMPenCombining::combine( QIMPenChar *base, QIMPenChar *accent ) +{ + QRect brect = base->boundingRect(); + QRect arect = accent->boundingRect(); + int offset; + if ( accent->testFlag( QIMPenChar::CombineRight ) ) + offset = brect.left() - arect.left() + brect.width() + 2; + else + offset = brect.left() - arect.left() + (brect.width() - arect.width())/2; + QIMPenChar *combined = 0; + if ( base->character() == 'i' ) { + // Hack to remove the dot from i's when combining. + if ( base->penStrokes().count() > 1 ) { + combined = new QIMPenChar; + QIMPenStrokeIterator it( base->penStrokes() ); + for ( unsigned int i = 0; i < base->penStrokes().count()-1; ++it, i++ ) { + QIMPenStroke *st = new QIMPenStroke( *(it.current()) ); + combined->addStroke( st ); + } + combined->setFlag( QIMPenChar::System ); + } + } + if ( !combined ) + combined = new QIMPenChar( *base ); + QIMPenStrokeIterator it( accent->penStrokes() ); + for ( ; it.current(); ++it ) { + QIMPenStroke *st = new QIMPenStroke( *(it.current()) ); + st->setStartingPoint( st->startingPoint() + QPoint(offset, 0 )); + combined->addStroke( st ); + delete st; + } + + return combined; +} + +QIMPenChar *QIMPenCombining::penChar( int type ) +{ + QIMPenCharIterator it( chars ); + for ( ; it.current(); ++it ) { + QIMPenChar *pc = it.current(); + if ( pc->character() == combiningSymbols[type] ) + return pc; + } + + return 0; +} + |