QT 自定义抽屉式窗口,上层覆盖下层界面,下层布局不改变

一、自定义需要弹出的窗口(弹出按钮放在该窗口,且外发按钮信号),注:需要设置背景色,不然弹出是透明的(不知道原因)

二、主窗口初始化

     int m_popBtnWidth = 0;
    int m_beginPosX = 0;
    int m_beginPosY = 0;
    QPropertyAnimation *m_propertyAnimation;  //采用属性动画

void RegisterMainWnd::initPopWidget()
{
    m_popBtnWidth = 40;
    m_beginPosX = this->width() ;
    m_beginPosY = 0;
    m_detailWnd = new RegisterDetailWnd(this); //需要弹出的窗口
    m_detailWnd->setFixedHeight(this->height());
    m_detailWnd->setMinimumWidth(this->width() / 2);
    m_detailWnd->move(m_beginPosX - m_popBtnWidth,m_beginPosY);// 初始化将其放到主界面最右侧停靠
    m_curPopStatus = false;
    connect(m_detailWnd, &RegisterDetailWnd::popStatusChanged, this, &RegisterMainWnd::onPopStatusChanged); //连接信号

    m_propertyAnimation = new QPropertyAnimation(m_detailWnd,"geometry"); //初始化动画
    m_propertyAnimation->setEasingCurve(QEasingCurve::InOutSine);
    m_propertyAnimation->setDuration(800);
}

三、按钮信号处理

void RegisterMainWnd::onPopStatusChanged(bool pop)
{
    if(pop) //从最右边弹出,
    {
        m_propertyAnimation->setStartValue(QRect(m_beginPosX - m_popBtnWidth,m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));
        m_propertyAnimation->setEndValue(QRect(m_beginPosX-m_detailWnd->width(),m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));
        m_propertyAnimation->start();

    }
    else //回到最右边
    {
        m_propertyAnimation->setStartValue(QRect(m_beginPosX-m_detailWnd->width(),m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));
        m_propertyAnimation->setEndValue(QRect(m_beginPosX - m_popBtnWidth,m_beginPosY,m_detailWnd->width(),m_detailWnd->height()));
        m_propertyAnimation->start();

    }
 
}

三、重置弹出窗口与主界面宽度一致

void RegisterMainWnd::resizeEvent(QResizeEvent *e)//重写主界面的事件
{
    m_beginPosX = this->width() ;
    m_beginPosY = 0;
    m_detailWnd->setFixedHeight(this->height());
    m_detailWnd->setMinimumWidth(this->width() / 2);
    m_detailWnd->move(m_beginPosX - m_popBtnWidth,m_beginPosY);// 右侧停靠
    QWidget::resizeEvent(e);
}

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