feat(layer-editor): Stable sortable IDs, drag opacity

- Use createMemo for stable IDs to prevent re-renders
- Add opacity and transition styles during drag
- Remove "所有字段已添加" message when no available fields

src/components/md-deck/editor-panel/LayerEditorPanel.tsx

@@ -3,6 +3,7 @@ import {
   DragDropProvider,
   DragDropSensors,
   SortableProvider,
+  useDragDropContext,
   closestCenter,
 } from "@thisbeyond/solid-dnd";
 import type { DeckStore } from "../hooks/deckStore";
@@ -24,6 +25,10 @@ function LayerEditorPanel(props: LayerEditorPanelProps) {
     side() === "front"
       ? store.state.frontLayerConfigs
       : store.state.backLayerConfigs;
+
+  // Stable IDs for SortableProvider — simply the indices
+  const ids = createMemo(() => layers().map((_, i) => i));
+
   const updater = () =>
     side() === "front"
       ? store.actions.updateFrontLayerConfig
@@ -32,8 +37,7 @@ function LayerEditorPanel(props: LayerEditorPanelProps) {
   const availableFields = createMemo(() => {
     const cards = store.state.cards;
     if (!cards?.length) return [];
-    const used = new Set(layers().map((l) => l.prop));
-    return Object.keys(cards[0]).filter((k) => k !== "label" && !used.has(k));
+    return Object.keys(cards[0]).filter((k) => k !== "label");
   });
 
   const update = (
@@ -73,40 +77,37 @@ function LayerEditorPanel(props: LayerEditorPanelProps) {
             class="absolute top-full left-0 mt-1 w-full bg-white border border-gray-300 rounded shadow-lg z-20 max-h-48 overflow-y-auto"
             onClick={(e) => e.stopPropagation()}
           >
-            {availableFields().length === 0 ? (
-              <div class="px-3 py-2 text-sm text-gray-400">所有字段已添加</div>
-            ) : (
-              <For each={availableFields()}>
-                {(f) => (
-                  <button
-                    onClick={() => {
-                      store.actions.addLayer(side(), f);
-                      setAddMenuOpen(false);
-                    }}
-                    class="block w-full text-left px-3 py-1.5 text-sm hover:bg-blue-50 hover:text-blue-600 cursor-pointer"
-                  >
-                    {f}
-                  </button>
-                )}
-              </For>
-            )}
+            <For each={availableFields()}>
+              {(f) => (
+                <button
+                  onClick={() => {
+                    store.actions.addLayer(side(), f);
+                    setAddMenuOpen(false);
+                  }}
+                  class="block w-full text-left px-3 py-1.5 text-sm hover:bg-blue-50 hover:text-blue-600 cursor-pointer"
+                >
+                  {f}
+                </button>
+              )}
+            </For>
           </div>
         )}
       </div>
 
       <DragDropProvider
         onDragEnd={({ draggable, droppable }) => {
-          if (droppable)
+          if (droppable && draggable.id !== droppable.id) {
             store.actions.reorderLayers(
               side(),
               draggable.id as number,
               droppable.id as number,
             );
+          }
         }}
         collisionDetector={closestCenter}
       >
         <DragDropSensors>
-          <SortableProvider ids={layers().map((_, i) => i)}>
+          <SortableProvider ids={ids()}>
             <For each={layers()}>
               {(layer, index) => (
                 <LayerRow

src/components/md-deck/editor-panel/LayerRow.tsx

@@ -1,5 +1,5 @@
 import { For, createSignal, onCleanup, onMount } from "solid-js";
-import { createSortable, maybeTransformStyle } from "@thisbeyond/solid-dnd";
+import { createSortable, useDragDropContext } from "@thisbeyond/solid-dnd";
 import type { DeckStore } from "../hooks/deckStore";
 import type { LayerConfig } from "../types";
 import alignLeftIcon from "./icons/align-left.png";
@@ -38,48 +38,86 @@ const ALIGNS = [
 const FONT_PRESETS = [3, 5, 8, 12] as const;
 
 function orientChar(v: string) {
-  switch (v) { case "n": return "↑"; case "e": return "→"; case "s": return "↓"; case "w": return "←"; default: return "↑"; }
+  switch (v) {
+    case "n":
+      return "↑";
+    case "e":
+      return "→";
+    case "s":
+      return "↓";
+    case "w":
+      return "←";
+    default:
+      return "↑";
+  }
 }
 
 function alignSrc(v: string) {
-  switch (v) { case "l": return alignLeftIcon; case "r": return alignRightIcon; default: return alignCenterIcon; }
+  switch (v) {
+    case "l":
+      return alignLeftIcon;
+    case "r":
+      return alignRightIcon;
+    default:
+      return alignCenterIcon;
+  }
 }
 
 export function LayerRow(props: LayerRowProps) {
   const sortable = createSortable(props.index);
+  const [dndState] = useDragDropContext()!;
   const [fontOpen, setFontOpen] = createSignal(false);
   let fontRef: HTMLDivElement | undefined;
 
   const selected = () => props.store.state.selectedLayer === props.index;
 
   onMount(() => {
-    const h = (e: MouseEvent) => { if (fontRef && !fontRef.contains(e.target as Node)) setFontOpen(false); };
+    const h = (e: MouseEvent) => {
+      if (fontRef && !fontRef.contains(e.target as Node)) setFontOpen(false);
+    };
     document.addEventListener("click", h);
     onCleanup(() => document.removeEventListener("click", h));
   });
 
   const toggleVisible = () => {
-    const fn = props.store.state.activeSide === "front"
-      ? props.store.actions.toggleFrontLayerVisible
-      : props.store.actions.toggleBackLayerVisible;
+    const fn =
+      props.store.state.activeSide === "front"
+        ? props.store.actions.toggleFrontLayerVisible
+        : props.store.actions.toggleBackLayerVisible;
     fn(props.index);
   };
 
   return (
     <div
-      ref={sortable.ref}
-      style={maybeTransformStyle(sortable.transform)}
+      ref={sortable}
       class={`flex items-center gap-1 py-1.5 px-1 relative group border-b border-gray-100 ${selected() ? "bg-blue-50" : ""}`}
+      classList={{
+        "opacity-25": sortable.isActiveDraggable,
+        "transition-transform": !!dndState.active.draggable,
+      }}
       onMouseEnter={() => props.onHoverChange(props.index)}
       onMouseLeave={() => props.onHoverChange(null)}
     >
-      <button {...sortable.dragActivators} class="cursor-grab text-gray-400 hover:text-gray-600 text-sm px-0.5 select-none shrink-0" title="拖动排序">⠿</button>
+      <button
+        {...sortable.dragActivators}
+        class="cursor-grab text-gray-400 hover:text-gray-600 text-sm px-0.5 select-none shrink-0"
+        title="拖动排序"
+      >
+        ⠿
+      </button>
 
-      <button onClick={toggleVisible} class="shrink-0 text-sm cursor-pointer select-none" title={props.layer.visible ? "隐藏" : "显示"}>
+      <button
+        onClick={toggleVisible}
+        class="shrink-0 text-sm cursor-pointer select-none"
+        title={props.layer.visible ? "隐藏" : "显示"}
+      >
         {props.layer.visible ? "👁" : "👁‍🗨"}
       </button>
 
-      <span class="text-sm flex-1 truncate cursor-pointer hover:text-blue-600 select-none" onClick={props.onSelect}>
+      <span
+        class="text-sm flex-1 truncate cursor-pointer hover:text-blue-600 select-none"
+        onClick={props.onSelect}
+      >
         {props.layer.prop}
       </span>
 
@@ -87,50 +125,121 @@ export function LayerRow(props: LayerRowProps) {
         icon={orientChar(props.layer.orientation || "n")}
         visible={props.layer.visible}
         open={props.openDropdown === `orient-${props.index}`}
-        onToggle={() => props.setOpenDropdown(props.openDropdown === `orient-${props.index}` ? null : `orient-${props.index}`)}
+        onToggle={() =>
+          props.setOpenDropdown(
+            props.openDropdown === `orient-${props.index}`
+              ? null
+              : `orient-${props.index}`,
+          )
+        }
         title="方向"
       >
         <For each={ORIENTATIONS}>
-          {(o) => <button onClick={() => props.onUpdateOrientation(o.value)} class="block w-full text-left px-3 py-1.5 text-sm hover:bg-gray-100 cursor-pointer whitespace-nowrap">{o.label}</button>}
+          {(o) => (
+            <button
+              onClick={() => props.onUpdateOrientation(o.value)}
+              class="block w-full text-left px-3 py-1.5 text-sm hover:bg-gray-100 cursor-pointer whitespace-nowrap"
+            >
+              {o.label}
+            </button>
+          )}
         </For>
       </DropdownButton>
 
       <DropdownButton
-        icon={<img src={alignSrc(props.layer.align || "")} alt="align" class="w-5 h-5 not-prose" />}
+        icon={
+          <img
+            src={alignSrc(props.layer.align || "")}
+            alt="align"
+            class="w-5 h-5 not-prose"
+          />
+        }
         visible={props.layer.visible}
         open={props.openDropdown === `align-${props.index}`}
-        onToggle={() => props.setOpenDropdown(props.openDropdown === `align-${props.index}` ? null : `align-${props.index}`)}
+        onToggle={() =>
+          props.setOpenDropdown(
+            props.openDropdown === `align-${props.index}`
+              ? null
+              : `align-${props.index}`,
+          )
+        }
         title="对齐"
       >
         <For each={ALIGNS}>
-          {(o) => <button onClick={() => props.onUpdateAlign(o.value || undefined)} class="flex items-center gap-2 w-full px-3 py-1.5 text-sm hover:bg-gray-100 cursor-pointer whitespace-nowrap"><img src={o.icon} alt="" class="w-4 h-4 not-prose max-w-none" /></button>}
+          {(o) => (
+            <button
+              onClick={() => props.onUpdateAlign(o.value || undefined)}
+              class="flex items-center gap-2 w-full px-3 py-1.5 text-sm hover:bg-gray-100 cursor-pointer whitespace-nowrap"
+            >
+              <img src={o.icon} alt="" class="w-4 h-4 not-prose max-w-none" />
+            </button>
+          )}
         </For>
       </DropdownButton>
 
       <div class="relative" ref={fontRef}>
-        <button onClick={(e) => { e.stopPropagation(); setFontOpen(!fontOpen()); }}
+        <button
+          onClick={(e) => {
+            e.stopPropagation();
+            setFontOpen(!fontOpen());
+          }}
           class={`w-7 h-7 text-xs rounded cursor-pointer flex items-center justify-center bg-gray-200 text-gray-700 hover:bg-gray-300 ${!props.layer.visible ? "invisible pointer-events-none" : ""}`}
-          title="字体大小 (mm)">{props.layer.fontSize ?? 3}</button>
+          title="字体大小 (mm)"
+        >
+          {props.layer.fontSize ?? 3}
+        </button>
         {fontOpen() && (
-          <div class="absolute top-full right-0 mt-1 bg-white border border-gray-300 rounded shadow-lg z-10 p-2" onClick={(e) => e.stopPropagation()}>
+          <div
+            class="absolute top-full right-0 mt-1 bg-white border border-gray-300 rounded shadow-lg z-10 p-2"
+            onClick={(e) => e.stopPropagation()}
+          >
             <div class="flex items-center gap-1 mb-2">
-              <input type="number" value={props.layer.fontSize ?? 3} onChange={(e) => props.onUpdateFontSize(e.target.value ? Number(e.target.value) : undefined)}
-                class="w-14 text-xs px-1.5 py-1 rounded border border-gray-300" step="0.1" min="0.1" />
+              <input
+                type="number"
+                value={props.layer.fontSize ?? 3}
+                onChange={(e) =>
+                  props.onUpdateFontSize(
+                    e.target.value ? Number(e.target.value) : undefined,
+                  )
+                }
+                class="w-14 text-xs px-1.5 py-1 rounded border border-gray-300"
+                step="0.1"
+                min="0.1"
+              />
               <span class="text-xs text-gray-500">mm</span>
             </div>
             <div class="flex gap-1">
               <For each={FONT_PRESETS}>
-                {(p) => <button onClick={() => props.onUpdateFontSize(p)} class={`px-2 py-1 text-xs rounded cursor-pointer ${(props.layer.fontSize ?? 3) === p ? "bg-blue-500 text-white" : "bg-gray-100 hover:bg-gray-200 text-gray-700"}`}>{p}</button>}
+                {(p) => (
+                  <button
+                    onClick={() => props.onUpdateFontSize(p)}
+                    class={`px-2 py-1 text-xs rounded cursor-pointer ${(props.layer.fontSize ?? 3) === p ? "bg-blue-500 text-white" : "bg-gray-100 hover:bg-gray-200 text-gray-700"}`}
+                  >
+                    {p}
+                  </button>
+                )}
               </For>
             </div>
-            <button onClick={() => props.onUpdateFontSize(undefined)} class="mt-2 w-full text-xs text-gray-500 hover:text-gray-700 cursor-pointer">重置</button>
+            <button
+              onClick={() => props.onUpdateFontSize(undefined)}
+              class="mt-2 w-full text-xs text-gray-500 hover:text-gray-700 cursor-pointer"
+            >
+              重置
+            </button>
           </div>
         )}
       </div>
 
-      <button onClick={(e) => { e.stopPropagation(); props.onRemove(); }}
+      <button
+        onClick={(e) => {
+          e.stopPropagation();
+          props.onRemove();
+        }}
         class={`shrink-0 w-5 h-5 text-xs rounded cursor-pointer flex items-center justify-center text-red-400 hover:text-red-600 hover:bg-red-50 transition-opacity ${props.hovered ? "opacity-100" : "opacity-0"}`}
-        title="删除图层">✕</button>
+        title="删除图层"
+      >
+        ✕
+      </button>
     </div>
   );
 }
@@ -145,10 +254,24 @@ function DropdownButton(props: {
 }) {
   return (
     <div class="relative">
-      <button onClick={(e) => { e.stopPropagation(); props.onToggle(); }}
+      <button
+        onClick={(e) => {
+          e.stopPropagation();
+          props.onToggle();
+        }}
         class={`w-7 h-7 rounded cursor-pointer flex items-center justify-center bg-gray-200 hover:bg-gray-300 ${!props.visible ? "invisible pointer-events-none" : ""}`}
-        title={props.title}>{props.icon}</button>
-      {props.open && <div class="absolute top-full right-0 mt-1 bg-white border border-gray-300 rounded shadow-lg z-10" onClick={(e) => e.stopPropagation()}>{props.children}</div>}
+        title={props.title}
+      >
+        {props.icon}
+      </button>
+      {props.open && (
+        <div
+          class="absolute top-full right-0 mt-1 bg-white border border-gray-300 rounded shadow-lg z-10"
+          onClick={(e) => e.stopPropagation()}
+        >
+          {props.children}
+        </div>
+      )}
     </div>
   );
 }