graphic: [ { type: 'group', right: 0, top: 0, children: [ { type: 'rect', z: 100, left: 'center', top: 'middle', shape: { width: 50, height: 25 }, style: { fill: '#fff', stroke: '#51A3E6', lineWidth: 1, shadowBlur: 8, shadowOffsetX: 3, shadowOffsetY: 3, shadowColor: 'rgba(81,163,230,0.2)' } }, { type: 'text', z: 100, left: 'center', top: 'middle', style: { fill: '#51A3E6', width: 220, overflow: 'break', text: '返回', font: '14px Microsoft YaHei' } } ] } ]