#include "viewlist.h"
#include "ui_viewlist.h"
#include <QGraphicsDropShadowEffect>
#include <QPainter>
ViewList::ViewList(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::ViewList)
{
    ui->setupUi(this);
    QGraphicsDropShadowEffect *shadowEffect = new QGraphicsDropShadowEffect(this);
            shadowEffect->setColor(Qt::gray);
            shadowEffect->setOffset(0, 0);
            shadowEffect->setBlurRadius(10.0);
            this->setGraphicsEffect(shadowEffect);
}

ViewList::~ViewList()
{
    delete ui;
}
void ViewList::paintEvent(QPaintEvent* event){

//    添加透明度
//    QPainter painter(this);
//    painter.fillRect(rect(),QColor(0,0,0,200));

//    添加圆角效果
//    QPainterPath PainterPath;	//绘制一个QPainter路径对象
//    PainterPath.addRoundedRect(this->rect(), 6, 6);	//对它设置路径为四周圆角。10即圆角的深度，可以修改
//    QRegion mask = QRegion(PainterPath.toFillPolygon().toPolygon());	//创建遮罩对象，内容即该QPainter路径
//    this->setMask(mask);

    QPainter painter1(this);
    painter1.setRenderHint(QPainter::HighQualityAntialiasing, true);
    QPen pen(Qt::transparent);
    painter1.setPen(pen);
    QBrush brush(QColor(0,0,0,200));
    painter1.setBrush(brush);
    QRectF rect = contentsRect();
    painter1.drawRoundedRect(rect, 6, 6);


//    QPainter painter2(this);
//    painter2.setRenderHint(QPainter::Antialiasing); // 抗锯齿

    // 绘制边框和阴影
//    painter2.setPen(Qt::NoPen); // 不画边框线
//    painter2.setBrush(QColor(255, 255, 255)); // 设置背景颜色或者填充颜色
//    painter2.drawRect(rect.adjusted(5, 5, -5, -5)); // 绘制内部的矩形

    // 绘制阴影
//    QColor shadowColor(255, 255, 255, 60); // 阴影颜色，RGBA 设置透明度
//    painter2.setBrush(shadowColor);

    // 绘制右边和下边的阴影，创建阴影效果
//    painter2.drawRect(rect.adjusted(5, 5, 25, 25));

}