Differential D14016 Diff 37485 kcms/touchpadx/src/kcm/xlib/customslider.h

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kcms/touchpadx/src/kcm/xlib/customslider.h

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		1		/*
		2		* Copyright (C) 2013 Alexander Mezin <mezin.alexander@gmail.com>
		3		*
		4		* This program is free software; you can redistribute it and/or modify
		5		* it under the terms of the GNU General Public License as published by
		6		* the Free Software Foundation; either version 2 of the License, or
		7		* (at your option) any later version.
		8		*
		9		* This program is distributed in the hope that it will be useful,
		10		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		12		* GNU General Public License for more details.
		13		*
		14		* You should have received a copy of the GNU General Public License
		15		* along with this program; if not, write to the Free Software
		16		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
		17		*/
		18
		19		#ifndef CUSTOMSLIDER_H
		20		#define CUSTOMSLIDER_H
		21
		22		#include <QSlider>
		23
		24		class CustomSlider : public QSlider
		25		{
		26		Q_OBJECT
		27
		28		Q_PROPERTY(double minimum READ doubleMinimum WRITE setDoubleMinimum)
		29		Q_PROPERTY(double maximum READ doubleMaximum WRITE setDoubleMaximum)
		30		Q_PROPERTY(double value READ doubleValue WRITE setDoubleValue \
		31		NOTIFY valueChanged USER true)
		32
		33		public:
		34		explicit CustomSlider(QWidget *parent = 0);
		35
		36		void setDoubleMinimum(double);
		37		double doubleMinimum() const;
		38
		39		void setDoubleMaximum(double);
		40		double doubleMaximum() const;
		41
		42		class Interpolator
		43		{
		44		public:
		45		Interpolator() { }
		46		virtual double absolute(double relative,
		47		double minimum, double maximum) const;
		48		virtual double relative(double absolute,
		49		double minimum, double maximum) const;
		50
		51		virtual ~Interpolator();
		52		};
		53
		54		class SqrtInterpolator : public Interpolator
		55		{
		56		public:
		57		SqrtInterpolator() { }
		58		double absolute(double relative, double minimum, double maximum) const override;
		59		double relative(double absolute, double minimum, double maximum) const override;
		60		};
		61
		62		const Interpolator *interpolator() const;
		63		void setInterpolator(const Interpolator *);
		64
		65		double doubleValue() const;
		66		double fixup(double) const;
		67
		68		public Q_SLOTS:
		69		void setDoubleValue(double);
		70
		71		Q_SIGNALS:
		72		void valueChanged(double);
		73
		74		protected:
		75		void resizeEvent(QResizeEvent *) override;
		76
		77		private Q_SLOTS:
		78		void updateValue();
		79
		80		private:
		81		void updateRange(const QSize &);
		82		void moveSlider();
		83		int doubleToInt(double) const;
		84		double intToDouble(int) const;
		85
		86		static const Interpolator lerp;
		87
		88		double m_min, m_max, m_value;
		89		const Interpolator *m_interpolator;
		90		};
		91
		92		#endif // CUSTOMSLIDER_H