/*
 * Copyright (C) 2013 ~ 2015 National University of Defense Technology(NUDT) & Kylin Ltd.
 *
 * Authors:
 *  Kobe Lee    xiangli@ubuntukylin.com/kobe24_lixiang@126.com
 *
 * 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; version 3.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef SHADOWWIDGET_H
#define SHADOWWIDGET_H

#include <QWidget>
#include <QMouseEvent>
#include <QPainterPath>

class ShadowWidget : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity)
public:
    explicit ShadowWidget(QWidget *parent = 0);
    void setOpacity(qreal opacity);
    qreal opacity()
    {
        return widget_opacity;
    }
    void setColor(QColor color)
    {
        widget_color = color;
    }

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

private:
    QPoint m_dragPosition; //移动的距离
    bool m_mousePressed; //按下鼠标左键
    qreal widget_opacity;
    QColor  widget_color;
};

#endif // SHADOWWIDGET_H
