qml 窗口坐标转换

                    //var positionInRoot = tableView.mapToItem(tableView, mouse.x, mouse.y)
                    var positionInWindow = wrapper.mapToItem(tableView, press_pos.x, press_pos.y)
                    //var globalPosition = wrapper.mapToGlobal(mouse.x, mouse.y)
                    //console.log("到当前Rectangle左上角的距离" + positionInRoot )
                    //console.log("到窗口左上角的距离" + positionInWindow)
                    //console.log("到屏幕左上角的距离" + globalPosition)