Add interactive layer management to Editor

- Click layer to toggle visibility and redraw canvas
- Click ▲/▼ buttons to reorder layers (z-index)
- Active layer highlighted with left red border
- Each layer now actually renders: bg/white, border/frame, pattern/suit symbol, text/corner labels
- Fix fabric.js imports (Canvas, FabricText, Rect)

frontend/node_modules/.vite/deps/_metadata.json

@@ -1,43 +1,43 @@
 {
-  "hash": "8c4b68ba",
+  "hash": "76c4bd08",
-  "configHash": "34f6f529",
+  "configHash": "3c200fce",
   "lockfileHash": "99e89a35",
-  "browserHash": "6a02d3bf",
+  "browserHash": "df8b7ff8",
   "optimized": {
     "axios": {
       "src": "../../axios/index.js",
       "file": "axios.js",
-      "fileHash": "9022993e",
+      "fileHash": "a369977c",
       "needsInterop": false
     },
     "element-plus": {
       "src": "../../element-plus/es/index.mjs",
       "file": "element-plus.js",
-      "fileHash": "ed152bc7",
+      "fileHash": "0a2f9603",
       "needsInterop": false
     },
     "fabric": {
       "src": "../../fabric/dist/index.min.mjs",
       "file": "fabric.js",
-      "fileHash": "14f1f947",
+      "fileHash": "a1369625",
       "needsInterop": false
     },
     "pinia": {
       "src": "../../pinia/dist/pinia.mjs",
       "file": "pinia.js",
-      "fileHash": "ecda6472",
+      "fileHash": "20bc890b",
       "needsInterop": false
     },
     "vue-router": {
       "src": "../../vue-router/dist/vue-router.mjs",
       "file": "vue-router.js",
-      "fileHash": "4a9d54f8",
+      "fileHash": "017f450e",
       "needsInterop": false
     },
     "vue": {
       "src": "../../vue/dist/vue.runtime.esm-bundler.js",
       "file": "vue.js",
-      "fileHash": "4a46bbb6",
+      "fileHash": "70ae02ae",
       "needsInterop": false
     }
   },

frontend/src/views/Editor.vue

@@ -23,9 +23,17 @@
         </div>
 
         <h3 style="margin: 0 0 15px 0; font-size: 14px; color: #888;">图层管理</h3>
-        <div v-for="l in layers" :key="l.id" style="padding: 10px; margin-bottom: 5px; background: #16213e; border-radius: 4px; display: flex; align-items: center; gap: 10px; cursor: pointer;">
+        <div v-for="l in layers" :key="l.id" 
-          <span>{{ l.visible ? '👁' : '—' }}</span>
+             @click="toggleLayer(l)"
-          <span style="font-size: 13px;">{{ l.name }}</span>
+             :style="{ padding: '10px 12px', marginBottom: '5px', background: activeLayer === l.id ? '#16213e' : '#0f3460', borderRadius: '4px', display: 'flex', alignItems: 'center', gap: '10px', cursor: 'pointer', borderLeft: activeLayer === l.id ? '3px solid #e94560' : '3px solid transparent', transition: 'all 0.2s' }">
+          <span style="width: 20px; text-align: center;">{{ l.visible ? '👁' : '—' }}</span>
+          <span style="font-size: 13px; flex: 1;">{{ l.name }}</span>
+          <span style="display: flex; flex-direction: column; gap: 2px;">
+            <button @click.stop="moveLayer(l, -1)" :disabled="l.zIndex <= 0" 
+                    :style="{ border: 'none', background: 'transparent', color: l.zIndex <= 0 ? '#333' : '#888', cursor: l.zIndex <= 0 ? 'default' : 'pointer', fontSize: '10px', padding: '0' }">▲</button>
+            <button @click.stop="moveLayer(l, 1)" :disabled="l.zIndex >= layers.length - 1"
+                    :style="{ border: 'none', background: 'transparent', color: l.zIndex >= layers.length - 1 ? '#333' : '#888', cursor: l.zIndex >= layers.length - 1 ? 'default' : 'pointer', fontSize: '10px', padding: '0' }">▼</button>
+          </span>
         </div>
       </aside>
 
@@ -49,7 +57,7 @@
 <script setup>
 import { ref, onMounted, computed, nextTick } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-import { Canvas, FabricText } from 'fabric'
+import { Canvas, FabricText, Rect } from 'fabric'
 import axios from 'axios'
 
 const route = useRoute()
@@ -60,6 +68,7 @@ const pname = ref('')
 const currentSuit = ref('spade')
 const currentCard = ref('spade-A')
 const fabricCanvas = ref(null)
+const activeLayer = ref('bg')
 const projectId = computed(() => route.params.projectId)
 
 const suits = ['spade', 'heart', 'club', 'diamond']
@@ -76,12 +85,12 @@ const currentCards = computed(() => {
   return cards
 })
 
-const layers = [
+const layers = ref([
-  { id: 'bg', name: '背景层', visible: true },
+  { id: 'bg', name: '背景层', visible: true, zIndex: 0 },
-  { id: 'border', name: '边框层', visible: true },
+  { id: 'border', name: '边框层', visible: true, zIndex: 1 },
-  { id: 'pattern', name: '图案层', visible: true },
+  { id: 'pattern', name: '图案层', visible: true, zIndex: 2 },
-  { id: 'text', name: '文字层', visible: true }
+  { id: 'text', name: '文字层', visible: true, zIndex: 3 }
-]
+])
 
 function getSymbol(suit) {
   return { spade: '♠', heart: '♥', club: '♣', diamond: '♦' }[suit] || ''
@@ -91,6 +100,23 @@ function isRed(suit) {
   return suit === 'heart' || suit === 'diamond'
 }
 
+function toggleLayer(layer) {
+  activeLayer.value = layer.id
+  layer.visible = !layer.visible
+  drawCard()
+}
+
+function moveLayer(layer, delta) {
+  const newZ = layer.zIndex + delta
+  const swapped = layers.value.find(l => l.zIndex === newZ)
+  if (swapped) {
+    swapped.zIndex = layer.zIndex
+    layer.zIndex = newZ
+    layers.value.sort((a, b) => a.zIndex - b.zIndex)
+    drawCard()
+  }
+}
+
 onMounted(async () => {
   if (projectId.value) {
     try {
@@ -109,7 +135,7 @@ function initCanvas() {
   fabricCanvas.value = new Canvas('main-canvas', {
     width: 400,
     height: 560,
-    backgroundColor: '#ffffff'
+    backgroundColor: '#f5f5f5'
   })
   drawCard()
 }
@@ -119,22 +145,47 @@ function drawCard() {
   if (!c) return
 
   c.clear()
-  c.backgroundColor = '#ffffff'
 
+  const sortedLayers = [...layers.value].sort((a, b) => a.zIndex - b.zIndex)
   const suit = currentSuit.value
   const rank = currentCard.value.split('-')[1] || 'A'
   const sym = getSymbol(suit)
   const color = isRed(suit) ? '#FF0000' : '#000000'
+  const cardW = 400
+  const cardH = 560
 
-  const topText = new fabric.FabricText(`${rank}${sym}`, {
+  for (const layer of sortedLayers) {
-    left: 30, top: 25, fontSize: 36, fill: color, selectable: true
+    if (!layer.visible) continue
-  })
-  c.add(topText)
 
-  const center = new fabric.FabricText(sym, {
+    if (layer.id === 'bg') {
-    left: 200, top: 280, fontSize: 80, fill: color, selectable: true, originX: 'center', originY: 'center'
+      const bg = new Rect({ left: 0, top: 0, width: cardW, height: cardH, fill: '#ffffff', selectable: false })
-  })
+      c.add(bg)
-  c.add(center)
+    }
+
+    if (layer.id === 'border') {
+      const frame = new Rect({ left: 10, top: 10, width: cardW - 20, height: cardH - 20, fill: 'transparent', stroke: '#333', strokeWidth: 2, selectable: false })
+      c.add(frame)
+    }
+
+    if (layer.id === 'pattern') {
+      const center = new FabricText(sym, {
+        left: cardW / 2, top: cardH / 2, fontSize: 80, fill: color, selectable: true, originX: 'center', originY: 'center'
+      })
+      c.add(center)
+    }
+
+    if (layer.id === 'text') {
+      const topLabel = new FabricText(`${rank}${sym}`, {
+        left: 18, top: 16, fontSize: 32, fill: color, selectable: true
+      })
+      c.add(topLabel)
+
+      const bottomLabel = new FabricText(`${sym}${rank}`, {
+        left: cardW - 18, top: cardH - 16, fontSize: 32, fill: color, selectable: true, originX: 'right', originY: 'bottom'
+      })
+      c.add(bottomLabel)
+    }
+  }
 
   c.renderAll()
 }