64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// This file is part of RSS Guard.
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//
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// Copyright (C) 2011-2015 by Martin Rotter <rotter.martinos@gmail.com>
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//
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// RSS Guard is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// RSS Guard is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with RSS Guard. If not, see <http://www.gnu.org/licenses/>.
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#ifndef TEXTFACTORY_H
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#define TEXTFACTORY_H
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#include "definitions/definitions.h"
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#include <QDateTime>
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#include <QFontMetrics>
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class TextFactory {
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private:
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// Constructors and destructors.
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explicit TextFactory();
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public:
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// Returns true if lhs is smaller than rhs if case-insensitive string comparison is used.
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static inline bool isCaseInsensitiveLessThan(const QString &lhs, const QString &rhs) {
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return lhs.toLower() < rhs.toLower();
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}
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static int stringHeight(const QString &string, const QFontMetrics &metrics);
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static int stringWidth(const QString &string, const QFontMetrics &metrics);
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// Tries to parse input textual date/time representation.
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// Returns invalid date/time if processing fails.
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// NOTE: This method tries to always return time in UTC+00:00.
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static QDateTime parseDateTime(const QString &date_time);
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// Converts 1970-epoch miliseconds to date/time.
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// NOTE: This apparently returns date/time in localtime.
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static QDateTime parseDateTime(qint64 milis_from_epoch);
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static QString encrypt(const QString &text);
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static QString decrypt(const QString &text);
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// Shortens input string according to given length limit.
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static QString shorten(const QString &input, int text_length_limit = TEXT_TITLE_LIMIT);
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private:
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static quint64 initializeSecretEncryptionKey();
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static quint64 generateSecretEncryptionKey();
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static quint64 s_encryptionKey;
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};
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#endif // TEXTFACTORY_H
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