甘特图组件，有点改炸了

components/Gantt/core/TimeCalculator.js

@@ -0,0 +1,82 @@
+// TimeCalculator：时间轴计算器，负责时间与像素的转换、生成时间刻度等
+export default class TimeCalculator {
+  constructor(config) {
+    this.config = config;
+    this.scaleMap = { day: 40, week: 80, month: 200, quarter: 600 }; // 每单位像素宽度
+  }
+  // 日期转像素坐标
+  dateToPixel(date) {
+    const start = new Date(this.config.startDate);
+    const d = new Date(date);
+    const scale = this.scaleMap[this.config.timeScale] || 80;
+    let diff = 0;
+    if (this.config.timeScale === 'day') {
+      diff = (d - start) / (1000 * 3600 * 24);
+    } else if (this.config.timeScale === 'week') {
+      diff = (d - start) / (1000 * 3600 * 24 * 7);
+    } else if (this.config.timeScale === 'month') {
+      diff = (d.getFullYear() - start.getFullYear()) * 12 + (d.getMonth() - start.getMonth());
+    } else if (this.config.timeScale === 'quarter') {
+      diff = ((d.getFullYear() - start.getFullYear()) * 12 + (d.getMonth() - start.getMonth())) / 3;
+    }
+    return diff * scale;
+  }
+  // 像素转日期（仅简单实现，实际可扩展）
+  pixelToDate(pixel) {
+    const start = new Date(this.config.startDate);
+    const scale = this.scaleMap[this.config.timeScale] || 80;
+    let d = new Date(start);
+    if (this.config.timeScale === 'day') {
+      d.setDate(start.getDate() + pixel / scale);
+    } else if (this.config.timeScale === 'week') {
+      d.setDate(start.getDate() + (pixel / scale) * 7);
+    } else if (this.config.timeScale === 'month') {
+      d.setMonth(start.getMonth() + pixel / scale);
+    } else if (this.config.timeScale === 'quarter') {
+      d.setMonth(start.getMonth() + (pixel / scale) * 3);
+    }
+    return d;
+  }
+  // 生成时间轴刻度
+  getTimelineTicks() {
+    const ticks = [];
+    const start = new Date(this.config.startDate);
+    const end = new Date(this.config.endDate);
+    let cur = new Date(start);
+    while (cur <= end) {
+      ticks.push({
+        label: this.formatTick(cur),
+        date: new Date(cur)
+      });
+      if (this.config.timeScale === 'day') {
+        cur.setDate(cur.getDate() + 1);
+      } else if (this.config.timeScale === 'week') {
+        cur.setDate(cur.getDate() + 7);
+      } else if (this.config.timeScale === 'month') {
+        cur.setMonth(cur.getMonth() + 1);
+      } else if (this.config.timeScale === 'quarter') {
+        cur.setMonth(cur.getMonth() + 3);
+      }
+    }
+    return ticks;
+  }
+  // 格式化刻度
+  formatTick(date) {
+    if (this.config.timeScale === 'day') {
+      return date.toISOString().slice(5, 10);
+    } else if (this.config.timeScale === 'week') {
+      return 'W' + this.getWeekNumber(date);
+    } else if (this.config.timeScale === 'month') {
+      return date.getFullYear() + '-' + (date.getMonth() + 1);
+    } else if (this.config.timeScale === 'quarter') {
+      return date.getFullYear() + ' Q' + (Math.floor(date.getMonth() / 3) + 1);
+    }
+    return '';
+  }
+  // 获取周数
+  getWeekNumber(date) {
+    const firstDay = new Date(date.getFullYear(), 0, 1);
+    const dayOfYear = ((date - firstDay) / 86400000) + 1;
+    return Math.ceil(dayOfYear / 7);
+  }
+}