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Diffstat (limited to 'src/declarative/extra/qnumberformat.cpp')
| -rw-r--r-- | src/declarative/extra/qnumberformat.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/declarative/extra/qnumberformat.cpp b/src/declarative/extra/qnumberformat.cpp new file mode 100644 index 0000000..79e328a --- /dev/null +++ b/src/declarative/extra/qnumberformat.cpp @@ -0,0 +1,224 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qnumberformat.h" + + +QT_BEGIN_NAMESPACE +QML_DEFINE_TYPE(QNumberFormat,NumberFormat); + +QNumberFormat::QNumberFormat(QObject *parent) : QObject(parent), _number(0), _type(Decimal), + _groupingSize(0) +{ + _locale = QLocale::system(); + _groupingSeparator = _locale.groupSeparator(); + _decimalSeparator = _locale.decimalPoint(); + _currencySymbol = QLatin1Char('$'); +} + +QNumberFormat::~QNumberFormat() +{ + +} + +void QNumberFormat::updateText() +{ + QTime t; + t.start(); + static int totalTime; + + handleFormat(); + + totalTime += t.elapsed(); + emit textChanged(); +} + +void QNumberFormat::handleFormat() +{ + // ### is extremely messy + if (_format.isEmpty()) { + _text = QString(QLatin1String("%1")).arg(_number, -1, 'f', -1); + return; + } + + QString inputString; + + // ### possible to use the following parsed data in the future + + int remainingLength = _format.size(); + int currentIndex = _format.size()-1; + + int maxDigits = 0; + int minDigits = 0; + int decimalLength = 0; + + while (remainingLength > 0) { + switch(_format.at(currentIndex).unicode()) { + case ',': + if (decimalLength && !_groupingSize) + setGroupingSize(maxDigits - decimalLength); + else if (!_groupingSize) + setGroupingSize(maxDigits); + break; + case '.': + if (!decimalLength) + decimalLength = maxDigits; + break; + case '0': + minDigits++; + case '#': + maxDigits++; + break; + default: + break; + } + currentIndex--; + remainingLength--; + } + + // round given the decimal length/precision + inputString = QString(QLatin1String("%1")).arg(_number, -1, 'f', decimalLength); + + QStringList parts = inputString.split(QLatin1Char('.')); + QStringList formatParts = _format.split(QLatin1Char('.')); + + if (formatParts.size() > 2 || parts.size() > 2 ) + return; + + QString formatInt = formatParts.at(0); + + QString formatDec; + if (formatParts.size() == 2) + formatDec = formatParts.at(1); + + QString integer = parts.at(0); + + QString decimal; + if (parts.size() == 2) + decimal = parts.at(1); + + QString outputDecimal = formatDecimal(formatDec, decimal); + QString outputInteger = formatInteger(formatInt, integer); + + // insert separators + if (_groupingSize) { + unsigned int count = 0; + for (int i = outputInteger.size()-1; i > 0; i--) { + if (outputInteger.at(i).digitValue() >= 0) { + if (count == _groupingSize - 1) { + count = 0; + outputInteger.insert(i, _groupingSeparator); + } + else + count++; + } + } + } + if (!outputDecimal.isEmpty()) + _text = outputInteger + _decimalSeparator + outputDecimal; + else + _text = outputInteger; +} + +QString QNumberFormat::formatInteger(const QString &formatInt, const QString &integer) +{ + if (formatInt.isEmpty() || integer.isEmpty()) + return QString(); + + QString outputInteger; + int formatIndex = formatInt.size()-1; + + //easier for carry? + for (int index= integer.size()-1; index >= 0; index--) { + if (formatIndex < 0) { + outputInteger.push_front(integer.at(index)); + } + else { + switch(formatInt.at(formatIndex).unicode()) { + case '0': + if (index > integer.size()-1) { + outputInteger.push_front(QLatin1Char('0')); + break; + } + case '#': + outputInteger.push_front(integer.at(index)); + break; + case ',': + index++; + break; + default: + outputInteger.push_front(formatInt.at(formatIndex)); + index++; + break; + } + formatIndex--; + } + } + while (formatIndex >= 0) { + if (formatInt.at(formatIndex).unicode() != '#' && formatInt.at(formatIndex).unicode() != ',') + outputInteger.push_front(formatInt.at(formatIndex)); + formatIndex--; + } + return outputInteger; +} + +QString QNumberFormat::formatDecimal(const QString &formatDec, const QString &decimal) +{ + QString outputDecimal; + + // up to max 6 decimal places + for (int index=formatDec.size()-1; index >= 0; index--) { + switch(formatDec.at(index).unicode()) { + case '0': + outputDecimal.push_front(decimal.at(index)); + break; + case '#': + if (decimal.at(index) != QLatin1Char('0') || outputDecimal.size() > 0) + outputDecimal.push_front(decimal.at(index)); + break; + default: + outputDecimal.push_front(formatDec.at(index)); + break; + } + } + return outputDecimal; +} +QT_END_NAMESPACE |