modify：新增小程序

Sale/components/ec-canvas/ec-canvas.js

@@ -0,0 +1,90 @@
+Component({
+  properties: {
+    canvasId: {
+      type: String,
+      value: 'ec-canvas'
+    },
+    ec: {
+      type: Object,
+      value: {}
+    },
+    disableTouch: {
+      type: Boolean,
+      value: false
+    }
+  },
+
+  data: {
+    isNew: true
+  },
+
+  ready() {
+    console.log('ec-canvas ready')
+
+    if (!this.data.ec) {
+      console.warn('组件需绑定 ec 对象')
+      return
+    }
+
+    if (!this.data.ec.onInit) {
+      console.warn('ec 对象需包含 onInit 方法')
+      return
+    }
+
+    const query = this.createSelectorQuery()
+    query.select(`#${this.data.canvasId}`)
+      .fields({ node: true, size: true })
+      .exec((res) => {
+        console.log('Canvas query 结果:', res)
+
+        if (!res || !res[0]) {
+          console.error('Canvas 节点未找到')
+          return
+        }
+
+        const canvasNode = res[0].node
+        const ctx = canvasNode.getContext('2d')
+
+        const dpr = wx.getSystemInfoSync().pixelRatio
+        const width = res[0].width
+        const height = res[0].height
+
+        console.log('Canvas 尺寸信息:', { width, height, dpr })
+
+        canvasNode.width = width * dpr
+        canvasNode.height = height * dpr
+        ctx.scale(dpr, dpr)
+
+        const canvas = {
+          width: width * dpr,  // 使用缩放后的宽度
+          height: height * dpr, // 使用缩放后的高度
+          getContext: () => ctx,
+          node: canvasNode
+        }
+
+        console.log('准备调用 onInit，canvas 对象:', canvas)
+        this.chart = this.data.ec.onInit(canvas, width, height, res)
+        console.log('onInit 返回的 chart:', this.chart)
+      })
+  },
+
+  methods: {
+    touchStart(e) {
+      if (this.chart && this.chart.touchStart) {
+        this.chart.touchStart(e)
+      }
+    },
+
+    touchMove(e) {
+      if (this.chart && this.chart.touchMove) {
+        this.chart.touchMove(e)
+      }
+    },
+
+    touchEnd(e) {
+      if (this.chart && this.chart.touchEnd) {
+        this.chart.touchEnd(e)
+      }
+    }
+  }
+})