/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * Copyright (C) 2019 KylinSoft  Co., Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#ifndef GRADIENTSLIDER_H
#define GRADIENTSLIDER_H

#include <QSlider>
#include <QPainter>
#include <QStyleOptionSlider>
#include <QMouseEvent>
#include "colorsliderstyle.h"

class GradientSlider : public QSlider
{
    Q_OBJECT

    Q_PROPERTY(QBrush background READ background WRITE setBackground)
    Q_PROPERTY(QVector<QColor> colors READ colors WRITE setColors)
    Q_PROPERTY(QLinearGradient gradient READ gradient WRITE setGradient STORED false)
    Q_PROPERTY(QColor firstColor READ firstColor WRITE setFirstColor STORED false)
    Q_PROPERTY(QColor lastColor READ lastColor WRITE setLastColor STORED false)

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

    QBrush background() const { return back; }
    void setBackground(QBrush bg);

    QVector<QColor> colors() const { return col_list; }
    void setColors(QVector<QColor> bg);
    void setGradient(QLinearGradient bg);
    QLinearGradient gradient() const ;

    void setFirstColor(QColor c);
    void setLastColor(QColor c);
    QColor firstColor() const;
    QColor lastColor() const;
    void updateValueFromPos(int yPos);

protected:
    void paintEvent(QPaintEvent *ev);
    void mousePressEvent(QMouseEvent* event);
    void mouseMoveEvent(QMouseEvent* event);
    void mouseReleaseEvent(QMouseEvent* event);

private:
    QVector<QColor> col_list;
    QBrush back;
    ColorSliderStyle *style = nullptr;
};

#endif // GRADIENTSLIDER_H
