157 lines
4.3 KiB
C++
157 lines
4.3 KiB
C++
/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#include "QskPinyinCompositionModel.h"
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#include "pinyin/zh.h"
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#include <QVector>
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class QskPinyinCompositionModel::PrivateData
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{
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public:
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PrivateData():
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groups( 5 )
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{
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}
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QVector< Qt::Key > groups;
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char currentVowel;
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uchar currentSubtones;
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int candidateCount;
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const PinyinCandidateSection* candidates; // pointer to 6 values, unless null
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};
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QskPinyinCompositionModel::QskPinyinCompositionModel():
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QskInputCompositionModel(),
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m_data( new PrivateData )
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{
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m_data->candidateCount = 0;
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m_data->candidates = nullptr;
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m_data->currentVowel = -1;
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m_data->currentSubtones = NoTone;
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}
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QskPinyinCompositionModel::~QskPinyinCompositionModel()
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{
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}
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int QskPinyinCompositionModel::candidateCount() const
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{
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return qMax( 0, m_data->candidateCount );
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}
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Qt::Key QskPinyinCompositionModel::candidate( int index ) const
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{
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Q_ASSERT( m_data->candidates[ groupIndex() ].data
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&& m_data->candidates[ groupIndex() ].size > index );
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return static_cast< Qt::Key >( m_data->candidates[ groupIndex() ].data[ index ] );
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}
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QVector< Qt::Key > QskPinyinCompositionModel::groups() const
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{
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return m_data->groups;
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}
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bool QskPinyinCompositionModel::hasIntermediate() const
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{
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return m_data->currentVowel == 0
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|| ( m_data->currentVowel > 0 && m_data->candidates
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&& m_data->candidates[0].data );
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}
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QString QskPinyinCompositionModel::polishPreedit( const QString& preedit )
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{
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if ( preedit.isEmpty() )
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{
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m_data->candidates = nullptr;
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m_data->candidateCount = 0;
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Q_EMIT candidatesChanged();
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std::fill( m_data->groups.begin(), m_data->groups.end(), Qt::Key( 0 ) );
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Q_EMIT groupsChanged( m_data->groups );
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return QString();
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}
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const PinyinCandidates candidates = pinyinCandidates( preedit.toUtf8() );
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QString displayText = preedit;
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displayText.replace( 'v', QChar(0x00FC), Qt::CaseInsensitive );
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if ( candidates.vowel > 0 && groupIndex() != 0
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&& ( candidates.subtones & ( 1 << ( groupIndex() - 1 ) ) ) )
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{
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const int vowelIndex = preedit.indexOf(candidates.vowel);
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Q_ASSERT(vowelIndex >= 0);
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QChar replacement = vowelWithTone(candidates.vowel, groupIndex() );
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displayText.replace(vowelIndex, 1, replacement);
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}
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else if ( groupIndex() != 0 )
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{
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setGroupIndex( 0 );
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}
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m_data->candidates = candidates.sections;
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m_data->candidateCount = m_data->candidates[ groupIndex() ].size;
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Q_EMIT candidatesChanged();
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if ( candidates.vowel == m_data->currentVowel
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&& candidates.subtones == m_data->currentSubtones )
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{
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return displayText;
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}
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m_data->currentVowel = candidates.vowel;
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m_data->currentSubtones = candidates.subtones;
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QVector< Qt::Key > groups =
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{
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( m_data->currentSubtones & FlatTone )
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? vowelWithTone( m_data->currentVowel, 1 ) : Qt::Key( 0 ),
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( m_data->currentSubtones & RisingTone )
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? vowelWithTone( m_data->currentVowel, 2 ) : Qt::Key( 0 ),
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( m_data->currentSubtones & LowTone )
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? vowelWithTone( m_data->currentVowel, 3 ) : Qt::Key( 0 ),
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m_data->groups[4] = ( m_data->currentSubtones & FallingTone )
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? vowelWithTone( m_data->currentVowel, 4 ) : Qt::Key( 0 ),
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( m_data->currentSubtones & NeutralTone )
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? vowelWithTone( m_data->currentVowel, 0 ) : Qt::Key( 0 )
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};
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if ( groups != m_data->groups )
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{
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m_data->groups = groups;
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Q_EMIT groupsChanged( m_data->groups );
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}
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return displayText;
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}
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bool QskPinyinCompositionModel::isComposable(const QStringRef& preedit) const
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{
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const QByteArray text = preedit.toUtf8();
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PinyinCandidates candidates = pinyinCandidates( text );
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if ( candidates.vowel < 0 )
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return false;
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if ( candidates.vowel == 0 )
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return true;
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return candidates.sections[ 0 ].data;
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}
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void QskPinyinCompositionModel::handleGroupIndexChanged()
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{
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m_data->candidateCount = m_data->candidates[ groupIndex() ].size;
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}
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#include "moc_QskPinyinCompositionModel.cpp"
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