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/*
* Qt implementation of TCIME library
* This file is part of the Qt Virtual Keyboard module.
* Contact: http://www.qt.io/licensing/
*
* Copyright (C) 2015 The Qt Company
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CANGJIETABLE_H
#define CANGJIETABLE_H
#include <QMap>
#include <QChar>
#include <QString>
namespace tcime {
/**
* Defines cangjie letters and calculates the index of the given cangjie code.
*/
class CangjieTable
{
Q_DISABLE_COPY(CangjieTable)
CangjieTable() {}
// Cangjie 25 letters with number-index starting from 1:
// 日月金木水火土竹戈十大中一弓人心手口尸廿山女田難卜
static const QMap<QChar, int> &letters();
static const int BASE_NUMBER;
public:
// Cangjie codes contain at most five letters. A cangjie code can be
// converted to a numerical code by the number-index of each letter.
// The absent letter will be indexed as 0 if the cangjie code contains less
// than five-letters.
static const int MAX_CODE_LENGTH;
static const int MAX_SIMPLIFIED_CODE_LENGTH;
/**
* Returns {@code true} only if the given character is a valid cangjie letter.
*/
static bool isLetter(const QChar &c);
/**
* Returns the primary index calculated by the first and last letter of
* the given cangjie code.
*
* @param code should not be null.
* @return -1 for invalid code.
*/
static int getPrimaryIndex(const QString &code);
/**
* Returns the secondary index calculated by letters between the first and
* last letter of the given cangjie code.
*
* @param code should not be null.
* @return -1 for invalid code.
*/
static int getSecondaryIndex(const QString &code);
};
}
#endif // CANGJIETABLE_H
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