External/common/TimeSelect/shadowwidget.cpp

#include "shadowwidget.h"
#include <QLayout>
#include <QGraphicsDropShadowEffect>
#include <QDebug>

ShadowWidget::ShadowWidget(QWidget *parent)
    : QWidget(parent)
    , m_pCentralWidget(new QWidget(this))
{
    setWindowFlags(Qt::FramelessWindowHint);
    setAttribute(Qt::WA_TranslucentBackground);

    QHBoxLayout* pLayout = new QHBoxLayout();
    if (nullptr != pLayout) {
        pLayout->addWidget(m_pCentralWidget);
        this->setLayout(pLayout);
    }

    QGraphicsDropShadowEffect *pShadowEffect = new QGraphicsDropShadowEffect(this);
    pShadowEffect->setBlurRadius(16);               // 模糊度
    pShadowEffect->setColor(QColor(0, 0, 0, 90));   // 阴影的颜色
    pShadowEffect->setOffset(0, 0);                 // 水平和垂直偏移量
    m_pCentralWidget->setGraphicsEffect(pShadowEffect);
}


void ShadowWidget::setCentralLayout(QLayout *layout)
{
    if (nullptr != m_pCentralWidget) {
        m_pCentralWidget->setLayout(layout);
    }
}

QLayout* ShadowWidget::getLayout() const
{
    if (nullptr != m_pCentralWidget) {
        return m_pCentralWidget->layout();
    }
    return nullptr;
}