甘特图组件，有点改炸了

components/Gantt/core/Layout.js

@@ -0,0 +1,57 @@
+// Layout：布局计算器，负责任务条和依赖线的布局
+export default class Layout {
+  constructor(tasks, config) {
+    this.tasks = tasks;
+    this.config = config;
+  }
+  // 计算任务条布局
+  computeTaskLayout() {
+    // 简单实现：每个任务一行，计算左侧（start）、宽度（end-start）
+    const layout = [];
+    this.tasks.forEach((task, idx) => {
+      const startPixel = this.dateToPixel(task.start);
+      const endPixel = this.dateToPixel(task.end);
+      layout.push({
+        id: task.id,
+        top: idx * 32,
+        left: startPixel,
+        width: endPixel - startPixel,
+        height: 28,
+        color: this.getTaskColor(task)
+      });
+    });
+    return layout;
+  }
+  // 计算依赖线布局（可扩展）
+  computeDependencyLines() {
+    // 返回依赖线的起止坐标
+    return [];
+  }
+  // 工具：日期转像素
+  dateToPixel(date) {
+    const start = new Date(this.config.startDate);
+    const d = new Date(date);
+    const scaleMap = { day: 40, week: 80, month: 200, quarter: 600 };
+    const scale = 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;
+  }
+  // 工具：获取任务颜色
+  getTaskColor(task) {
+    const group = this.config.groupBy;
+    if (group && task.dimensions && task.dimensions[group]) {
+      const id = task.dimensions[group].id;
+      return this.config.colors && this.config.colors[group] && this.config.colors[group][id] ? this.config.colors[group][id] : '#409EFF';
+    }
+    return '#409EFF';
+  }
+}