qtpropertymanager.cpp

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** General Public License version 3.0 as published by the Free Software
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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the tools applications 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.
** $QT_END_LICENSE$
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****************************************************************************/

#include "MantidQtWidgets/Common/QtPropertyBrowser/qtpropertymanager.h"
#include "MantidQtWidgets/Common/QtPropertyBrowser/qtpropertybrowserutils_p.h"
#include <QtCore/QDateTime>
#include <QtCore/QLocale>
#include <QtCore/QMap>
#include <QtCore/QTimer>
#include <QtGui/QIcon>
#include <QtCore/QMetaEnum>
#include <QtGui/QFontDatabase>
#include <QtGui/QStyleOption>
#include <QtGui/QStyle>
#include <QtGui/QApplication>
#include <QtGui/QPainter>
#include <QtGui/QLabel>

#include <limits.h>
#include <float.h>
#include <math.h>

#if defined(Q_CC_MSVC)
#    pragma warning(disable: 4786) /* MS VS 6: truncating debug info after 255 characters */
#endif

#if QT_VERSION >= 0x040400
QT_BEGIN_NAMESPACE
#endif

// Match the exact signature of qBound for VS 6.
QSize qBound(QSize minVal, QSize val, QSize maxVal)
{
    return qBoundSize(minVal, val, maxVal);
}

QSizeF qBound(QSizeF minVal, QSizeF val, QSizeF maxVal)
{
    return qBoundSize(minVal, val, maxVal);
}

class QtMetaEnumProvider
{
public:
    QtMetaEnumProvider();

    QStringList policyEnumNames() const { return m_policyEnumNames; }
    QStringList languageEnumNames() const { return m_languageEnumNames; }
    QStringList countryEnumNames(QLocale::Language language) const { return m_countryEnumNames.value(language); }

    QSizePolicy::Policy indexToSizePolicy(int index) const;
    int sizePolicyToIndex(QSizePolicy::Policy policy) const;

    void indexToLocale(int languageIndex, int countryIndex, QLocale::Language *language, QLocale::Country *country) const;
    void localeToIndex(QLocale::Language language, QLocale::Country country, int *languageIndex, int *countryIndex) const;

private:
    void initLocale();

    QStringList m_policyEnumNames;
    QStringList m_languageEnumNames;
    QMap<QLocale::Language, QStringList> m_countryEnumNames;
    QMap<int, QLocale::Language> m_indexToLanguage;
    QMap<QLocale::Language, int> m_languageToIndex;
    QMap<int, QMap<int, QLocale::Country> > m_indexToCountry;
    QMap<QLocale::Language, QMap<QLocale::Country, int> > m_countryToIndex;
    QMetaEnum m_policyEnum;
};

#if QT_VERSION < 0x040300

static QList<QLocale::Country> countriesForLanguage(QLocale::Language language)
{
    QList<QLocale::Country> countries;
    QLocale::Country country = QLocale::AnyCountry;
    while (country <= QLocale::LastCountry) {
        QLocale locale(language, country);
        if (locale.language() == language && !countries.contains(locale.country()))
            countries << locale.country();
        country = (QLocale::Country)((uint)country + 1); // ++country
    }
    return countries;
}

#endif

static QList<QLocale::Country> sortCountries(const QList<QLocale::Country> &countries)
{
    QMultiMap<QString, QLocale::Country> nameToCountry;
    QListIterator<QLocale::Country> itCountry(countries);
    while (itCountry.hasNext()) {
        QLocale::Country country = itCountry.next();
        nameToCountry.insert(QLocale::countryToString(country), country);
    }
    return nameToCountry.values();
}

void QtMetaEnumProvider::initLocale()
{
    QMultiMap<QString, QLocale::Language> nameToLanguage;
    QLocale::Language language = QLocale::C;
    while (language <= QLocale::LastLanguage) {
        QLocale locale(language);
        if (locale.language() == language)
            nameToLanguage.insert(QLocale::languageToString(language), language);
        language = (QLocale::Language)((uint)language + 1); // ++language
    }

    const QLocale system = QLocale::system();
    if (!nameToLanguage.contains(QLocale::languageToString(system.language())))
        nameToLanguage.insert(QLocale::languageToString(system.language()), system.language());

    QList<QLocale::Language> languages = nameToLanguage.values();
    QListIterator<QLocale::Language> itLang(languages);
    while (itLang.hasNext()) {
        QLocale::Language language = itLang.next();