temp/TransmitterSwitch/common/DropShadow/dropshadowmgr.cpp

#include "dropshadowmgr.h"
#include "idropshadowable.h"
#include <QEvent>


DropShadowMgr::DropShadowMgrGarbo DropShadowMgr::garbo;
DropShadowMgr* DropShadowMgr::sm_pInstance = new DropShadowMgr(nullptr);     //初始化静态单例(饿汉):
QList<BoxShadow> DropShadowMgr::sm_cacheShadows;

/**
 * @brief 绘制注册到这里的阴影效果
 * @param watched
 * @param event
 * @return
 */
bool DropShadowMgr::eventFilter(QObject *watched, QEvent *event)
{
    IDropShadowable *pDropShadowableObj = dynamic_cast<IDropShadowable*>(watched);
    if(pDropShadowableObj == nullptr)
    {
        return QObject::eventFilter(watched, event);
    }
    if(event->type() == QEvent::Paint)
    {
        pDropShadowableObj->PaintShadows();
    }
    return QObject::eventFilter(watched, event);
}