<template>
    <el-button type="primary" @click="addlin">添加线</el-button>
    <el-button type="success" @click="addArea">添加区域</el-button>
    <div ref="echart" id="echart" class="echart"></div>
</template>
 
 
<script setup>
import { nextTick, onMounted, ref } from "vue";
import * as echarts from "echarts";
let colorTheme = [
    "#4150d8",
    "#28bf7e",
    "#ed7c2f",
    "#ff0000",
    "#f9cf36",
    "#4a5bdc",
    "#7b04f4",
    "#ee04f4",
    "#04a0f4",
    "#1af404",
    "#d4f404",
    "#f404f1",
];
// 0 代表y轴索引   后面0 代表 甘特图一个数据有多行  0 代表1个 1 代表2个
// [0, "2021-07-19 03:29:19", "2021-07-19 08:38:50", 0]
let showData = [
    [
        {
            value: [0, "2021-07-19 03:29:19", "2021-07-19 08:38:50", 0],
        },
        {
            value: [1, "2021-07-19 03:53:07", "2021-07-19 21:00:08", 1],
        },
        {
            value: [2, "2021-07-19 03:29:19", "2021-07-19 08:38:50", 0],
        },
    ],
    [
        {
            value: [0, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 0],
        },
        {
            value: [1, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 0],
        },
        {
            value: [2, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 0],
        },
    ],
    [
        {
            value: [0, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 2],
        },
        {
            value: [1, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 2],
        },
        {
            value: [2, "2021-07-19 00:00:00", "2021-07-19 05:08:02", 2],
        },
    ],
    [
        {
            value: [0, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 3],
        },
        {
            value: [1, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 3],
        },
        {
            value: [2, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 3],
        },
    ],
    [
        {
            value: [0, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 4],
        },
        {
            value: [1, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 4],
        },
        {
            value: [2, "2021-07-19 10:00:00", "2021-07-19 15:08:02", 4],
        },
    ],
];

let linflag = false;
const addlin = () => {
    linflag = !linflag;
    option.series = option.series.map((item) => {
        item.markLine = {
            data: [],
        };
        return item;
    });

    if (linflag) {
        option.series[0].markLine = {
            //使用警戒线
            symbol: "none", //取消警戒线箭头
            silent: "true", //图形是否不响应和触发鼠标事件，默认为 false，即响应和触发鼠标事件
            data: [{ xAxis: "2021-07-19 10:53:07" }],
            label: {
                show: true,
                color: "red",
                fontSize: 20,
                formatter: "",
            },
            lineStyle: {
                //线条颜色与线条虚实
                color: colorTheme[0], //航线的颜色
                type: "scrollDataIndex",
            },
        };
    }

    myChart.setOption(option);
};

let areaflag = false;
const addArea = () => {
    areaflag = !areaflag;
    option.series = option.series.map((item) => {
        item.markArea = {
            data: [],
        };
        return item;
    });
    if (areaflag) {
        option.series[0].markArea = {
            itemStyle: {
                color: "rgba(0,0,0,0.2)",
            },
            data: [
                [
                    { xAxis: "2021-07-19 03:29:19" },
                    { xAxis: "2021-07-19 08:29:19" },
                ],
            ],
        };
    }
    myChart.setOption(option);
};
// 分配y值
const produceSeries = (data) => {
    let len = data.length;
    let step = len % 2 == 1 ? -5 : 2;
    let series = [];
    data.map((val, index) => {
        if (step == -5) {
            series.push(configSeriec(val, index, 0));
            step = step + 30;
            return;
        }
        if (index % 2 == 0) {
            series.push(configSeriec(val, index, step));
            step = step + 20;
        } else {
            series.push(configSeriec(val, index, -step));
            step = step + 10;
        }
    });

    function configSeriec(val, index, step) {
        return {
            type: "custom",
            renderItem: (params, api) => {
                //开发者自定义的图形元素渲染逻辑，是通过书写 renderItem 函数实现的
                var categoryIndex = api.value(0); //这里使用 api.value(0) 取出当前 dataItem 中第一个维度的数值。
                var start = api.coord([api.value(1), categoryIndex]); // 这里使用 api.coord(...) 将数值在当前坐标系中转换成为屏幕上的点的像素值。
                var end = api.coord([api.value(2), categoryIndex]);

                var height = 10;
                return {
                    type: "rect", // 表示这个图形元素是矩形。还可以是 'circle', 'sector', 'polygon' 等等。
                    y: step,
                    shape: echarts.graphic.clipRectByRect(
                        {
                            // 矩形的位置和大小。
                            x: start[0],
                            y: start[1] - height / 2,
                            width: end[0] - start[0],
                            height: height,
                        },
                        {
                            // 当前坐标系的包围盒。
                            x: params.coordSys.x,
                            y: params.coordSys.y,
                            width: params.coordSys.width,
                            height: params.coordSys.height,
                        }
                    ),
                    style: api.style(),
                };
            },
            encode: {
                x: [1, 2], // data 中『维度1』和『维度2』对应到 X 轴
                y: 0, // data 中『维度0』对应到 Y 轴
            },
            itemStyle: {
                normal: {
                    color: function (params) {
                        //return colorTheme[params.value[0]];
                        return colorTheme[index];
                    },
                },
            },
            data: val,
        };
    }
    return series;
};

let option = {
    // grid: {
    //     left: "5%",
    //     right: "7%",
    //     bottom: "5%",
    //     containLabel: false,
    // },
    title: {
        text: "我是标题",
        top: "1%",
        x: "center",
        textStyle: {
            fontSize: 20,
            color: "#333333",
        },
    },
    tooltip: {
        enterable: true,
        backgroundColor: "rgba(255,255,255,1)", //背景颜色（此时为默认色）
        borderRadius: 5, //边框圆角
        padding: 10, // [5, 10, 15, 20] 内边距
        textStyle: {
            color: "#000",
        },
        position: function (point, params, dom, rect, size) {
            dom.innerHTML = params.value[1] + "~" + params.value[2];
        },
    },

    legend: {
        //图例
        data: "我是图例",
        left: "90px",
        top: 22,
        itemWidth: 16,
        itemHeight: 16,
        selectedMode: false, // 图例设为不可点击
        textStyle: {
            color: "#333333",
            fontSize: 16,
        },
    },
    toolbox: {
        show: true,
        feature: {
            saveAsImage: {},
        },
    },
    xAxis: {
        name: "场景时间",
        nameTextStyle: {
            color: "#333333",
            fontSize: 18,
        },
        type: "time",
        splitNumber: 6,
        max: "2021-07-20 00:00:00",
        min: "2021-07-19 00:00:00", //将data里最小时间的整点时间设为min,否则min会以data里面的min为开始进行整点递增
        axisLabel: {
            show: true,

            formatter: function (value) {
                //在这里写你需要的时间格式
                var t_date = new Date(value);
                return (
                    [
                        t_date.getFullYear(),
                        t_date.getMonth() + 1,
                        t_date.getDate(),
                    ].join("-") +
                    " " +
                    [t_date.getHours(), t_date.getMinutes()].join(":")
                );
            },
        },

        splitLine: {
            show: true,
            lineStyle: {
                color: "#333333",
            },
        },
        axisLine: {
            show: true,
            color: "#333333",
            symbol: ["none", "arrow"],
            lineStyle: {
                color: "#333333",
                width: 1,
                type: "solid",
            },
        },
    },
    yAxis: {
        name: "y轴",
        nameTextStyle: {
            color: "#333333",
            fontSize: 18,
        },
        axisLine: {
            color: "#333333",
            lineStyle: {
                color: "#333333",
            },
            symbol: ["none", "arrow"],
        },
        axisLabel: {
            show: true,
            textStyle: {
                color: "#333333", //这里用参数代替了
            },
        },
        data: ["示例1", "示例2", "示例3"],
    },
    dataZoom: [
        {
            show: true,
            realtime: true,
            start: 0,
            end: 100,
            height: 20,
            borderColor: "rgba(43,48,67,0.5)",
            fillerColor: "#269cdb", //滑动块的颜色
            backgroundColor: "rgba(44, 92, 170, 0.35)", //两边未选中的滑动条区域的颜色
            xAxisIndex: [0, 1],
            width: "86%",
        },
        {
            type: "inside",
            realtime: true,
            start: 30,
            end: 70,
            // xAxisIndex: [0, 1],
        },
        {
            type: "slider",
            show: true,
            // 设置组件控制的y轴
            yAxisIndex: 0,
            right: 15,
            // top: 60,
            // 数据窗口范围的起始百分比。范围是：0 ~ 100。表示 0% ~ 100%
            // 也可以用 startValue设置起始值
            // start: "0",
            // end: "50",
            maxSpan: 20,
            maxValueSpan: 3, // 最大显示y轴的条数
            width: 20, //滚动条的粗细
            // height: 450,
            // 组件的背景颜色
            // left: 600, //左边的距离
            // right: 8,//右边的距离
            borderRadius: 8,
            borderColor: "rgba(43,48,67,0.5)",
            fillerColor: "#269cdb", //滑动块的颜色
            backgroundColor: "rgba(44, 92, 170, 0.35)", //两边未选中的滑动条区域的颜色
            // 是否显示detail，即拖拽时候显示详细数值信息
            showDetail: false,
            // 控制手柄的尺寸
            handleSize: 16,
            // 是否在 dataZoom-silder 组件中显示数据阴影。数据阴影可以简单地反应数据走势。
            showDataShadow: false,
            zoomLock: true, //禁止拖拽   y轴固定，不能拉长滚动条
        },
        {
            type: "inside",
            yAxisIndex: [0],
            start: 1,
            end: 36,
            // 鼠标滚轮Y轴能触发缩放  false  禁止滚轮缩放   true  滚轮可以缩放
            zoomOnMouseWheel: false,
            // 不按任何功能键，鼠标移动能触发数据窗口平移
        },
    ],
    series: produceSeries(showData),
};

let echart = ref();
let myChart;
onMounted(() => {
    nextTick(() => {
        console.log(echart.value);
        myChart = echarts.init(echart.value);
        myChart.setOption(option);
    });
});
</script>
<style  lang="less">
.echart {
    width: 100%;
    height: 1000px;
}
</style>