/*
    QAD - Qt ADvanced

    Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef SPINSLIDER_H
#define SPINSLIDER_H

#include "qad_widgets_export.h"

#include <QBoxLayout>
#include <QDoubleSpinBox>
#include <QSlider>


class QAD_WIDGETS_EXPORT SpinSlider: public QWidget {
	Q_OBJECT
	Q_ENUMS(Direction)
	Q_PROPERTY(double minimum READ minimum WRITE setMinimum)
	Q_PROPERTY(double maximum READ maximum WRITE setMaximum)
	Q_PROPERTY(double value READ value WRITE setValue)
	Q_PROPERTY(int decimals READ decimals WRITE setDecimals)
	Q_PROPERTY(double singleStep READ singleStep WRITE setSingleStep)
	Q_PROPERTY(double pageStep READ pageStep WRITE setPageStep)
	Q_PROPERTY(bool adaptiveStep READ adaptiveStep WRITE setAdaptiveStep)
	Q_PROPERTY(QString prefix READ prefix WRITE setPrefix)
	Q_PROPERTY(QString suffix READ suffix WRITE setSuffix)
	Q_PROPERTY(QSlider::TickPosition tickPosition READ tickPosition WRITE setTickPosition)
	Q_PROPERTY(int tickInterval READ tickInterval WRITE setTickInterval)
	Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
	Q_PROPERTY(Direction direction READ direction WRITE setDirection)
	Q_PROPERTY(bool invertedAppearance READ invertedAppearance WRITE setInvertedAppearance)
	Q_PROPERTY(bool squareScale READ squareScale WRITE setSquareScale)
	Q_PROPERTY(double spinMinimum READ spinMinimum WRITE setSpinMinimum)
	Q_PROPERTY(double spinMaximum READ spinMaximum WRITE setSpinMaximum)

public:
	explicit SpinSlider(QWidget * parent = 0);
	~SpinSlider();

	enum Direction {
		LeftToRight,
		RightToLeft,
		TopToBottom,
		BottomToTop
	};

	double minimum() const { return min_; }
	double maximum() const { return max_; }
	double spinMinimum() const { return spin->minimum(); }
	double spinMaximum() const { return spin->maximum(); }
	double value() const { return val_; }
	int decimals() const { return dec_; }
	double singleStep() const { return spin->singleStep(); }
	bool adaptiveStep() const;
	double pageStep() const { return page; }
	QString prefix() const { return spin->prefix(); }
	QString suffix() const { return spin->suffix(); }
	QSlider::TickPosition tickPosition() const { return slider->tickPosition(); }
	int tickInterval() const { return ticks_; }
	Qt::Orientation orientation() const { return slider->orientation(); }
	Direction direction() const { return direc; }
	bool invertedAppearance() const { return slider->invertedAppearance(); }
	bool squareScale() const { return square; }

	void setReadOnly(bool r);
	bool isReadOnly() const { return m_read_only; }

	void setSingleStep(double step) {
		spin->setSingleStep(step);
		slider->setPageStep(qRound(step * delim));
	}
	void setAdaptiveStep(bool on);
	void setPageStep(double step) {
		page = step;
		slider->setPageStep(qRound(page * delim));
	}
	void setPrefix(QString prefix) { spin->setPrefix(prefix); }
	void setSuffix(QString suffix) { spin->setSuffix(suffix); }
	void setTickPosition(QSlider::TickPosition tp) { slider->setTickPosition(tp); }
	void setTickInterval(int ti) {
		ticks_ = ti;
		slider->setTickInterval(qRound(ticks_ * delim));
	}
	void setOrientation(Qt::Orientation orient);
	void setDirection(Direction d) {
		direc = d;
		layout->setDirection((QBoxLayout::Direction)d);
	}
	void setInvertedAppearance(bool yes) { slider->setInvertedAppearance(yes); }
	void setSquareScale(bool yes) {
		square = yes;
		adjust();
	}

public slots:
	void setMinimum(double value) {
		min_ = value;
		adjust();
	}
	void setMaximum(double value) {
		max_ = value;
		adjust();
	}
	void setSpinMinimum(double value) { spin->setMinimum(value); }
	void setSpinMaximum(double value) { spin->setMaximum(value); }
	void setValue(double value) {
		val_ = value;
		spin->setValue(value);
	}
	void setDecimals(int value) {
		dec_ = value;
		adjust();
	}
	void reset() {
		val_ = 0.;
		spin->setValue(0.);
	}

private:
	void adjust();
	double sqr(const double & v) { return v * v; }

	double min_, max_, val_, delim, page;
	int dec_, ticks_;
	bool adjusting, square, m_read_only = false;
	QSlider * slider;
	QDoubleSpinBox * spin;
	QBoxLayout * layout;
	Direction direc;

private slots:
	void sliderChanged(int value);
	void spinChanged(double value);

signals:
	void valueChanged(double);
	void valueChangedInt(int);
};


#endif // SPINSLIDER_H