toolbox箭头标注echarts 折线配置项内容和展示

按钮划线单一，按钮无法切换颜色，老版本的辅助线功能没了

      var base = +new Date(1968, 9, 3);
var oneDay = 24 * 3600 * 1000;
var date = [];

var data = [Math.random() * 300];

for (var i = 1; i < 20000; i++) {
    var now = new Date(base += oneDay);
    date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
    data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
}

option = {
    tooltip: {
        trigger: 'axis',
        position: function (pt) {
            return [pt[0], '10%'];
        }
    },
    title: {
        left: 'center',
        text: '大数据量面积图',
    },
    toolbox: {
        feature: {
            dataZoom: {
                yAxisIndex: 'none'
            },
            restore: {},
            saveAsImage: {},
             myTool1: {
                show: true,
                title: '自定义扩展方法1',
                icon: 'path://M432.45,595.444c0,2.177-4.661,6.82-11.305,6.82c-6.475,0-11.306-4.567-11.306-6.82s4.852-6.812,11.306-6.812C427.841,588.632,432.452,593.191,432.45,595.444L432.45,595.444z M421.155,589.876c-3.009,0-5.448,2.495-5.448,5.572s2.439,5.572,5.448,5.572c3.01,0,5.449-2.495,5.449-5.572C426.604,592.371,424.165,589.876,421.155,589.876L421.155,589.876z M421.146,591.891c-1.916,0-3.47,1.589-3.47,3.549c0,1.959,1.554,3.548,3.47,3.548s3.469-1.589,3.469-3.548C424.614,593.479,423.062,591.891,421.146,591.891L421.146,591.891zM421.146,591.891',
                onclick: function (){
                    
    
    var zr = myChart.getZr();
    
    var Arrow = echarts.graphic.extendShape({

        type: 'arrow',

        shape: {
            x: 0,
            y: 0,
            width: 0,
            height: 0
        },

        buildPath: function (ctx, shape) {
            var height = shape.height;
            var width = shape.width;
            var x = shape.x;
            var y = shape.y;
            var dx = width / 3 * 2;
            ctx.moveTo(x, y);
            ctx.lineTo(x + dx, y + height);
            ctx.lineTo(x, y + height / 4 * 3);
            ctx.lineTo(x - dx, y + height);
            ctx.lineTo(x, y);
            ctx.closePath();
        }
    });
    
    var drawing;
    var points = [];
    var startPoint;
    var traceEl;
    var arrowEl;
    
    zr.on('mousedown', function (e) {
        drawing = true;
        startPoint = [e.offsetX, e.offsetY];

        // 如果需要清除箭头，用这个逻辑。
        // if (traceEl) {
        //     zr.remove(traceEl);
        // }
        // if (arrowEl) {
        //     zr.remove(arrowEl);
        // }
        
        traceEl = new echarts.graphic.Line({
            shape: {
                x1: 0, y1: 0, x2: 0, y2: 0
            },
            style: {
                stroke: 'red',
                lineWidth: 1
            }
        });
        arrowEl = new Arrow({
            ignore: true,
            shape: {
                x: 0, y: 0, width: 10, height: 20
            },
            style: {
                fill: 'red',
                stroke: null
            }
        });
        zr.add(traceEl);
        zr.add(arrowEl);
    });
    
    zr.on('mouseup', function (e) {
        drawing = false;
        points.length = 0;
        startPoint = null;
    })
    
    zr.on('mousemove', function (e) {
        if (!drawing) {
            return;
        }
        
        traceEl.attr('shape', {
            x1: startPoint[0],
            y1: startPoint[1],
            x2: e.offsetX,
            y2: e.offsetY
        });
        
        arrowEl.attr({
            ignore: false,
            position: [e.offsetX, e.offsetY],
            rotation: Math.atan(
                -(startPoint[1] - e.offsetY) / (startPoint[0] - e.offsetX)
            ) 
            + (startPoint[0] > e.offsetX ? 1 : -1) * Math.PI / 2
        })
    })
    
    

                }
            },
        }
    },
    xAxis: {
        type: 'category',
        boundaryGap: false,
        data: date
    },
    yAxis: {
        type: 'value',
        boundaryGap: [0, '100%']
    },
    dataZoom: [{
        type: 'inside',
        start: 0,
        end: 10
    }, {
        start: 0,
        end: 10,
        handleIcon: 'M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z',
        handleSize: '80%',
        handleStyle: {
            color: '#fff',
            shadowBlur: 3,
            shadowColor: 'rgba(0, 0, 0, 0.6)',
            shadowOffsetX: 2,
            shadowOffsetY: 2
        }
    }],
    series: [
        {
            name:'模拟数据',
            type:'line',
            smooth:true,
            symbol: 'none',
            sampling: 'average',
            itemStyle: {
                normal: {
                    color: 'rgb(255, 70, 131)'
                }
            },
            areaStyle: {
                normal: {
                    color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                        offset: 0,
                        color: 'rgb(255, 158, 68)'
                    }, {
                        offset: 1,
                        color: 'rgb(255, 70, 131)'
                    }])
                }
            },
            data: data
        }
    ]
};