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65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
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* Copyright 2013 Marco Martin <mart@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program 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 Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef UNITS_H
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#define UNITS_H
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#include <QObject>
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class Units : public QObject
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{
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Q_OBJECT
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/**
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* The fundamental unit of space that should be used for sizes, expressed in pixels.
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* Given the screen has an accurate DPI settings, it corresponds to a millimeter
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*/
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Q_PROPERTY(qreal gridUnit READ gridUnit NOTIFY gridUnitChanged())
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public:
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Units(QObject *parent = 0);
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~Units();
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qreal gridUnit() const;
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/**
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* @returns the number of pixels value density independent pixels correspond to.
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*/
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Q_INVOKABLE qreal dp(qreal value) const;
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/**
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* @returns the number of pixels value grid units correspond to.
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*/
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Q_INVOKABLE qreal gu(qreal value) const;
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Q_SIGNALS:
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void gridUnitChanged();
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private Q_SLOTS:
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void themeChanged();
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private:
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int m_gridUnit;
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};
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#endif //UNITS_H
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