<!-- 
    filename: BarChartBase.vue
    author: liubin
    date: 2024-04-10 08:59:28
    description: 
-->

<template>
  <chart-container class="bar-chart-base">
    <div class="legend">
      <span
        v-for="item in legend"
        :key="item.label"
        class="legend-item"
        :style="{ fontSize: isFullscreen ? '0.58vw' : '0.54vw' }"
        >{{ item.label }}</span
      >
    </div>
    <div
      ref="chart"
      style="max-width: 50vw"
      :style="{ height: vHeight + 'vh' }"
    ></div>
  </chart-container>
</template>

<script>
import screenfull from "screenfull";
import ChartContainerVue from "../../../../components/ChartContainer.vue";
import chartMixin from "@/mixins/chart.js";

export default {
  name: "BarChartBase",
  components: {
    ChartContainer: ChartContainerVue,
  },
  mixins: [chartMixin],
  props: {
    vHeight: {
      type: Number,
      default: 34,
    },
    legend: {
      type: Array,
      required: true,
    },
    xAxis: {
      type: Array,
      required: true,
    },
    series: {
      type: Array,
      required: true,
    },
  },
  data() {
    return {
      isFullscreen: false,
      actualOptions: null,
      options: {
        grid: {
          left: "5%",
          right: "4%",
          bottom: "3%",
          top: "15%",
          containLabel: true,
        },
        tooltip: {},
        xAxis: {
          axisTick: {
            show: false,
          },
          axisLine: {
            lineStyle: {
              color: "#4561AE",
            },
          },
          axisLabel: {
            color: "#fff",
            fontSize: 12,
          },
          data: this.xAxis,
        },
        yAxis: {
          name: "单位/片",
          nameTextStyle: {
            color: "#fff",
            fontSize: 12,
          },
          axisTick: {
            show: false,
          },
          axisLabel: {
            color: "#fff",
            fontSize: 12,
          },
          axisLine: {
            show: true,
            lineStyle: {
              color: "#4561AE",
            },
          },
          splitLine: {
            lineStyle: {
              color: "#4561AE",
            },
          },
        },
        series: [
          {
            name: "", // this.series[0].name,
            type: "bar",
            barWidth: 12,
            itemStyle: {
              borderRadius: [10, 10, 0, 0],
              color: {
                type: "linear",
                x: 0,
                y: 0,
                x2: 0,
                y2: 1,
                colorStops: [
                  {
                    offset: 0,
                    color: "#12f7f1", // 0% 处的颜色
                  },
                  {
                    offset: 0.35,
                    color: "#12f7f177", // 100% 处的颜色
                  },
                  {
                    offset: 0.75,
                    color: "#12f7f133", // 100% 处的颜色
                  },
                  {
                    offset: 1,
                    color: "transparent", // 100% 处的颜色
                  },
                ],
                global: false, // 缺省为 false
              },
            },
            data: [], // this.series[0].data,
          },
          {
            name: "", // this.series[1].name,
            type: "bar",
            barWidth: 12,
            // tooltip: {
            //   valueFormatter: function (value) {
            //     return value + " ml";
            //   },
            // },
            itemStyle: {
              borderRadius: [10, 10, 0, 0],
              color: {
                type: "linear",
                x: 0,
                y: 0,
                x2: 0,
                y2: 1,
                colorStops: [
                  {
                    offset: 0,
                    color: "#57abf8", // 0% 处的颜色
                  },
                  {
                    offset: 1,
                    color: "#364BFE66", // 100% 处的颜色
                  },
                ],
                global: false, // 缺省为 false
              },
            },
            data: [], // this.series[1].data,
          },
        ],
      },
    };
  },
  watch: {
    /** 全屏状态切换时，对柱子粗细和字体大小进行相应调整 */
    isFullscreen(val) {
      this.actualOptions.series.map((item) => {
        item.barWidth = val ? 18 : 12;
      });
      this.actualOptions.xAxis.axisLabel.fontSize = val ? 18 : 12;
      this.actualOptions.yAxis.axisLabel.fontSize = val ? 18 : 12;
      this.actualOptions.yAxis.nameTextStyle.fontSize = val ? 18 : 12;
      this.initOptions(this.actualOptions);
    },
    series(val) {
      if (!val) {
        this.initOptions(this.options);
        return;
      }
      const actualOptions = JSON.parse(JSON.stringify(this.options));
      actualOptions.series[0].data = val[0].data;
      actualOptions.series[0].name = val[0].name;
      actualOptions.series[1].data = val[1].data;
      actualOptions.series[1].name = val[1].name;
      this.actualOptions = actualOptions;
      this.initOptions(actualOptions);
    },
  },
  mounted() {
    this.actualOptions = this.options;
    this.initOptions(this.options);

    if (screenfull.isEnabled) {
      screenfull.on("change", () => {
        this.isFullscreen = screenfull.isFullscreen;
      });
    }
  },
};
</script>

<style scoped lang="scss">
.bar-chart-base {
  // position: relative;

  .legend {
    position: absolute;
    top: 5.2vh;
    right: 1vw;
  }

  .legend-item {
    position: relative;
    // font-size: 12px;
    margin-right: 0.67vw;

    &::before {
      content: "";
      display: inline-block;
      width: 0.531vw;
      height: 0.531vw;
      background-color: #ccc;
      border-radius: 2px;
      margin-right: 0.22vw;
    }
  }

  .legend-item:nth-child(1):before {
    background-color: #12f7f1;
  }

  .legend-item:nth-child(2):before {
    background-color: #58adfa;
  }
}
</style>