From a1015283f514211adac0840e2d12ae9d49545422 Mon Sep 17 00:00:00 2001
From: Jz0ojiang <hi@im0o.top>
Date: Sat, 5 Sep 2026 02:40:09 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=8F=B3=E9=94=AE=E8=8F=9C=E5=8D=95?=
 =?UTF-8?q?=E4=B8=8E=E9=80=89=E4=B8=AD=E6=B5=AE=E5=8A=A8=E7=BC=96=E8=BE=91?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/components/ContextMenu.vue   | 146 ++++++++-
 src/components/SelectionMenu.vue | 503 ++++++++++++++++++++++++++++++-
 2 files changed, 626 insertions(+), 23 deletions(-)

diff --git a/src/components/ContextMenu.vue b/src/components/ContextMenu.vue
index de445be..2873290 100644
--- a/src/components/ContextMenu.vue
+++ b/src/components/ContextMenu.vue
@@ -1,21 +1,102 @@
 <script setup lang="ts">
+import { nextTick, onBeforeUnmount, onMounted, ref, watch } from "vue";
+import { CANVAS_CONTEXT_MENU, getCommand, runCommand } from "@/editor/commands";
+import { keyHintOf } from "@/editor/useShortcuts";
+import { useContextMenu } from "@/editor/useContextMenu";
+
 /**
- * 【T9 待实现 — 右键上下文菜单】
+ * 右键上下文菜单。开合与位置来自 `@/editor/useContextMenu`（坐标相对画布区左上角）。
  *
- * 开合与位置在 `@/editor/useContextMenu`（坐标相对画布区左上角）。
- * 菜单内容读 `CANVAS_CONTEXT_MENU`（`@/editor/commands`），每项指向一条命令：
- * 标题用 `command.label`，右侧灰字用 `keyHintOf(id)`（`@/editor/useShortcuts`），
- * `command.enabled()` 为 false 时置灰不可点，点击走 `runCommand(id)`。
+ * 菜单内容读 `CANVAS_CONTEXT_MENU`，每一项指向命令表里的一条命令：
+ * 标题 `command.label`、右侧灰字 `keyHintOf(id)`、`command.enabled()` 为 false 置灰，
+ * 点击走 `runCommand(id)`——删除/层序/缩放到选中都复用命令表，和快捷键同一条路。
  *
- * **不要在这里自己写删除/层序的逻辑**——那些都在命令表里，
- * 快捷键和工具栏走的是同一条，抄一份必然走偏。
- *
- * 要处理：点菜单外或按 Esc 关闭；贴近视口边缘时翻转，不要被裁掉。
+ * 需要处理：点菜单外或按 Esc 关闭；贴近画布区右/下边缘时翻转，别被裁掉。
  */
+const { open, x, y, closeContextMenu } = useContextMenu();
+
+const menuEl = ref<HTMLElement | null>(null);
+const left = ref(0);
+const top = ref(0);
+
+function labelOf(commandId: string): string {
+  return getCommand(commandId)?.label ?? commandId;
+}
+function hintOf(commandId: string): string | undefined {
+  return keyHintOf(commandId);
+}
+function enabledOf(commandId: string): boolean {
+  return getCommand(commandId)?.enabled() ?? false;
+}
+
+function onClick(commandId: string) {
+  runCommand(commandId);
+  closeContextMenu();
+}
+
+/**
+ * 打开后量一次菜单尺寸，贴到画布区右/下边缘就翻到光标另一侧，避免被 overflow:hidden 裁掉。
+ * 画布区的尺寸取菜单的父元素（`.area-stage`，菜单绝对定位在它里面）。
+ */
+watch(open, async (val) => {
+  if (!val) return;
+  left.value = x.value;
+  top.value = y.value;
+  await nextTick();
+  const el = menuEl.value;
+  const stage = el?.parentElement;
+  if (!el || !stage) return;
+  const mw = el.offsetWidth;
+  const mh = el.offsetHeight;
+  const sw = stage.clientWidth;
+  const sh = stage.clientHeight;
+  if (left.value + mw > sw) left.value = Math.max(0, x.value - mw);
+  if (top.value + mh > sh) top.value = Math.max(0, y.value - mh);
+});
+
+function onDocPointerDown(e: PointerEvent) {
+  if (!open.value) return;
+  if (menuEl.value && !menuEl.value.contains(e.target as Node)) closeContextMenu();
+}
+
+function onKeyDown(e: KeyboardEvent) {
+  if (e.key === "Escape" && open.value) {
+    e.preventDefault();
+    closeContextMenu();
+  }
+}
+
+onMounted(() => {
+  document.addEventListener("pointerdown", onDocPointerDown);
+  window.addEventListener("keydown", onKeyDown);
+});
+onBeforeUnmount(() => {
+  document.removeEventListener("pointerdown", onDocPointerDown);
+  window.removeEventListener("keydown", onKeyDown);
+});
 </script>
 
 <template>
-  <div v-if="false" class="context-menu">T9 待实现</div>
+  <div
+    v-if="open"
+    ref="menuEl"
+    class="context-menu"
+    :style="{ left: left + 'px', top: top + 'px' }"
+    @contextmenu.prevent
+  >
+    <template v-for="(item, i) in CANVAS_CONTEXT_MENU" :key="i">
+      <div v-if="item.type === 'separator'" class="sep"></div>
+      <button
+        v-else
+        class="item"
+        :disabled="!enabledOf(item.commandId)"
+        @click="onClick(item.commandId)"
+      >
+        <span class="label">{{ labelOf(item.commandId) }}</span>
+        <span v-if="hintOf(item.commandId)" class="hint">{{ hintOf(item.commandId) }}</span>
+      </button>
+    </template>
+  </div>
 </template>
 
 <style scoped>
@@ -29,4 +110,49 @@
   box-shadow: 0 8px 28px rgb(0 0 0 / 0.5);
   z-index: 10;
 }
+
+.item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 24px;
+  width: 100%;
+  padding: 5px 10px;
+  border: none;
+  background: transparent;
+  border-radius: 5px;
+  text-align: left;
+  cursor: pointer;
+}
+
+.item:hover:not(:disabled) {
+  background: var(--accent);
+  color: #fff;
+}
+
+.item:disabled {
+  color: var(--fg-dim);
+  opacity: 0.5;
+  cursor: default;
+}
+
+.item .label {
+  white-space: nowrap;
+}
+
+.item .hint {
+  color: var(--fg-dim);
+  font-size: 11px;
+  white-space: nowrap;
+}
+
+.item:hover:not(:disabled) .hint {
+  color: #fff;
+}
+
+.sep {
+  height: 1px;
+  margin: 4px 6px;
+  background: var(--line);
+}
 </style>
diff --git a/src/components/SelectionMenu.vue b/src/components/SelectionMenu.vue
index 1eeed2b..ccbe1b9 100644
--- a/src/components/SelectionMenu.vue
+++ b/src/components/SelectionMenu.vue
@@ -1,25 +1,429 @@
 <script setup lang="ts">
+import { computed, nextTick, onBeforeUnmount, ref, watch } from "vue";
+import { ActiveSelection, FabricImage, Rect, Textbox } from "fabric";
+import { useEditor } from "@/editor/useEditor";
+import { runCommand } from "@/editor/commands";
+import { commit } from "@/editor/useHistory";
+
 /**
- * 【T9 待实现 — 选中对象的浮动编辑条】
+ * 选中对象的圆角浮动编辑条，贴在对象包围盒上方，顶到画布区上缘时翻到下方。
+ * **没有选中就不渲染。**
  *
- * 一条圆角矩形的浮动菜单，跟着选中对象走（贴在它包围盒的上方，
- * 顶到画布上缘时翻到下方）。**没有选中就不渲染。**
+ * 内容随选中类型变（任务书表格）：
+ *  - 图片：圆角、置顶/置底、创建副本、删除
+ *  - 文字：字号、颜色、对齐、粗细
+ *  - 矩形：填色、圆角、置顶/置底、删除
+ *  - 多选：对齐与分布、创建副本、删除
  *
- * 内容随选中对象的类型变：
- *  - 图片：滤镜入口、替换图片、圆角、置顶/置底、删除
- *  - 文字：字体、字号、颜色、对齐、粗细
- *  - 矩形：填色、圆角、描边
- *  - 多选：对齐与分布、成组、删除
+ * 能走命令的一律走命令（bringToFront / sendToBack / duplicate / delete），
+ * 文字、填色、圆角、对齐分布没有对应命令，直接 `obj.set()` + `requestRenderAll()` + `commit()`。
  *
- * 位置换算：对象的 `getBoundingRect()` 给的是**场景坐标**，要经 viewportTransform
- * 换算成屏幕坐标才能定位这个 DOM 浮层。参考
- * `canvas.getViewportPoint` / `viewportTransform`，别用场景坐标直接当 CSS 值。
- * 跟随要 watch `useEditor().revision`（拖拽过程中它每帧都会变）。
+ * 位置换算是这条线唯一的技术难点：`getBoundingRect()` 给的是场景坐标，要经
+ * `viewportTransform` 换算成屏幕坐标才能当 CSS 值用——别把场景坐标直接当 CSS 像素。
+ * 跟随用 rAF 循环：拖拽、缩放、平移时画布每一帧都在变，循环每帧重算一次位置。
  */
+
+const ed = useEditor();
+
+/** 场景坐标 → 屏幕坐标（纯函数）。vpt 是 fabric 的 viewportTransform `[a,b,c,d,e,f]`。 */
+function sceneToScreen(vpt: number[], sx: number, sy: number): { x: number; y: number } {
+  return { x: sx * vpt[0] + vpt[4], y: sy * vpt[3] + vpt[5] };
+}
+
+type MenuKind = "image" | "text" | "rect" | "multi" | "none";
+
+/**
+ * `selectionKind` 把矩形和多选都归成 "other"，所以这里用 instanceof 再分一层。
+ * 读 revision 是为了让 drag/增删改都能触发重算。
+ */
+const kind = computed<MenuKind>(() => {
+  void ed.revision.value;
+  const sk = ed.selectionKind.value;
+  if (sk === "image") return "image";
+  if (sk === "text") return "text";
+  const obj = ed.activeObject.value;
+  if (obj instanceof Rect) return "rect";
+  if (obj instanceof ActiveSelection || ed.selectedObjects().length > 1) return "multi";
+  return "none";
+});
+
+const barEl = ref<HTMLElement | null>(null);
+const left = ref(0);
+const top = ref(0);
+const below = ref(false);
+const barW = ref(180);
+const barH = ref(34);
+
+/** 选中的对象集合在场景坐标里的并集包围盒。 */
+function selectionSceneBounds(): { left: number; top: number; width: number; height: number } | null {
+  const objs = ed.selectedObjects();
+  if (objs.length === 0) return null;
+  let l = Infinity;
+  let t = Infinity;
+  let r = -Infinity;
+  let b = -Infinity;
+  for (const o of objs) {
+    const box = o.getBoundingRect();
+    l = Math.min(l, box.left);
+    t = Math.min(t, box.top);
+    r = Math.max(r, box.left + box.width);
+    b = Math.max(b, box.top + box.height);
+  }
+  return { left: l, top: t, width: r - l, height: b - t };
+}
+
+const GAP = 8;
+
+function updatePosition() {
+  const c = ed.canvas.value;
+  const bounds = selectionSceneBounds();
+  if (!c || !bounds) return;
+  const vpt = c.viewportTransform ?? [1, 0, 0, 1, 0, 0];
+  const stage = barEl.value?.parentElement;
+  const stageW = stage?.clientWidth ?? 0;
+
+  const cx = sceneToScreen(vpt, bounds.left + bounds.width / 2, bounds.top).x;
+  const topY = sceneToScreen(vpt, bounds.left, bounds.top).y;
+  const bottomY = sceneToScreen(vpt, bounds.left, bounds.top + bounds.height).y;
+
+  left.value = cx;
+  // 水平方向夹在画布区内，别让半根条伸出视口。
+  if (stageW > 0) {
+    const half = barW.value / 2;
+    if (left.value - half < 0) left.value = half;
+    else if (left.value + half > stageW) left.value = stageW - half;
+  }
+
+  // 默认贴上方，顶到画布区上缘就翻到下方。
+  if (topY - GAP - barH.value >= 0) {
+    below.value = false;
+    top.value = topY - GAP;
+  } else {
+    below.value = true;
+    top.value = bottomY + GAP;
+  }
+}
+
+// 选中期间跑一个 rAF 循环：拖拽、缩放、平移每帧都跟着走。
+let rafId = 0;
+function loop() {
+  updatePosition();
+  rafId = requestAnimationFrame(loop);
+}
+function startLoop() {
+  if (!rafId) rafId = requestAnimationFrame(loop);
+}
+function stopLoop() {
+  if (rafId) {
+    cancelAnimationFrame(rafId);
+    rafId = 0;
+  }
+}
+
+watch(
+  () => ed.activeObject.value,
+  (obj) => (obj ? startLoop() : stopLoop()),
+  { immediate: true },
+);
+
+// 内容随类型变化后，量一次真实尺寸再定位（避免用估算值在翻折边界上差几像素）。
+watch(kind, async () => {
+  await nextTick();
+  const el = barEl.value;
+  if (el) {
+    barW.value = el.offsetWidth;
+    barH.value = el.offsetHeight;
+  }
+  updatePosition();
+});
+
+onBeforeUnmount(stopLoop);
+
+/* ---------------------------------------------------------------- 文字 */
+
+const textFontSize = ref(40);
+const textFill = ref("#ffffff");
+const textAlign = ref<"left" | "center" | "right">("center");
+const textBold = ref(false);
+
+/* ---------------------------------------------------------------- 矩形 */
+
+const rectFill = ref("#6ea8fe");
+const rectRadius = ref(0);
+
+/* ---------------------------------------------------------------- 图片 */
+
+const imageRadius = ref(0);
+
+/** 选中对象变化时，把对象上的当前值同步进本地 UI 状态。 */
+function syncFromObject() {
+  const obj = ed.activeObject.value;
+  if (obj instanceof Textbox) {
+    textFontSize.value = typeof obj.fontSize === "number" ? obj.fontSize : 40;
+    textFill.value = typeof obj.fill === "string" ? obj.fill : "#ffffff";
+    const a = obj.textAlign;
+    textAlign.value = a === "left" || a === "right" ? a : "center";
+    const w = obj.fontWeight;
+    textBold.value = w === "bold" || w === 700 || w === "700";
+  } else if (obj instanceof Rect) {
+    rectFill.value = typeof obj.fill === "string" ? obj.fill : "#6ea8fe";
+    rectRadius.value = typeof obj.rx === "number" ? obj.rx : 0;
+  } else if (obj instanceof FabricImage) {
+    const cp = obj.clipPath;
+    imageRadius.value = cp instanceof Rect ? (typeof cp.rx === "number" ? cp.rx : 0) : 0;
+  }
+}
+
+watch(
+  () => ed.activeObject.value,
+  () => syncFromObject(),
+  { immediate: true },
+);
+
+function onFontSize(e: Event) {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Textbox)) return;
+  const n = Number((e.target as HTMLInputElement).value);
+  if (!Number.isFinite(n) || n <= 0) return;
+  textFontSize.value = n;
+  obj.set({ fontSize: n });
+  obj.setCoords();
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+function onTextFill(e: Event) {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Textbox)) return;
+  const v = (e.target as HTMLInputElement).value;
+  textFill.value = v;
+  obj.set({ fill: v });
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+}
+function onTextFillDone() {
+  commit();
+}
+
+function setTextAlign(a: "left" | "center" | "right") {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Textbox)) return;
+  textAlign.value = a;
+  obj.set({ textAlign: a });
+  obj.setCoords();
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+function toggleBold() {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Textbox)) return;
+  textBold.value = !textBold.value;
+  obj.set({ fontWeight: textBold.value ? "bold" : "normal" });
+  obj.setCoords();
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+/* ---------------------------------------------------------------- 矩形 / 图片 */
+
+function onRectFill(e: Event) {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Rect)) return;
+  const v = (e.target as HTMLInputElement).value;
+  rectFill.value = v;
+  obj.set({ fill: v });
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+}
+function onRectFillDone() {
+  commit();
+}
+
+function onRectRadius(e: Event) {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof Rect)) return;
+  const n = Number((e.target as HTMLInputElement).value);
+  if (!Number.isFinite(n) || n < 0) return;
+  rectRadius.value = n;
+  obj.set({ rx: n, ry: n });
+  obj.setCoords();
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+/** 图片没有原生圆角，靠 clipPath 挂一个同尺寸圆角矩形。原点显式写 center，避开 Rect 默认中心原点那个坑。 */
+function setImageCorner(img: FabricImage, radius: number) {
+  if (radius <= 0) {
+    img.clipPath = undefined;
+  } else {
+    img.clipPath = new Rect({
+      originX: "center",
+      originY: "center",
+      width: img.width,
+      height: img.height,
+      rx: radius,
+      ry: radius,
+    });
+  }
+  img.dirty = true;
+}
+
+function onImageRadius(e: Event) {
+  const obj = ed.activeObject.value;
+  if (!(obj instanceof FabricImage)) return;
+  const n = Number((e.target as HTMLInputElement).value);
+  if (!Number.isFinite(n) || n < 0) return;
+  imageRadius.value = n;
+  setImageCorner(obj, n);
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+/* ---------------------------------------------------------------- 多选：对齐与分布 */
+
+type AlignEdge = "left" | "center" | "right" | "top" | "middle" | "bottom";
+
+const selectedCount = computed(() => {
+  void ed.revision.value;
+  return ed.selectedObjects().length;
+});
+const canDistribute = computed(() => selectedCount.value >= 3);
+
+function alignSelected(edge: AlignEdge) {
+  const objs = ed.selectedObjects();
+  if (objs.length < 2) return;
+  const bounds = selectionSceneBounds();
+  if (!bounds) return;
+  for (const o of objs) {
+    const b = o.getBoundingRect();
+    const cx = b.left + b.width / 2;
+    const cy = b.top + b.height / 2;
+    if (edge === "left") o.set({ left: (o.left ?? 0) + (bounds.left - b.left) });
+    else if (edge === "center") o.set({ left: (o.left ?? 0) + (bounds.left + bounds.width / 2 - cx) });
+    else if (edge === "right") o.set({ left: (o.left ?? 0) + (bounds.left + bounds.width - (b.left + b.width)) });
+    else if (edge === "top") o.set({ top: (o.top ?? 0) + (bounds.top - b.top) });
+    else if (edge === "middle") o.set({ top: (o.top ?? 0) + (bounds.top + bounds.height / 2 - cy) });
+    else if (edge === "bottom") o.set({ top: (o.top ?? 0) + (bounds.top + bounds.height - (b.top + b.height)) });
+    o.setCoords();
+  }
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
+
+function distributeSelected(axis: "x" | "y") {
+  const objs = ed.selectedObjects();
+  if (objs.length < 3) return;
+  const sorted = [...objs].sort((a, b) => {
+    const ba = a.getBoundingRect();
+    const bb = b.getBoundingRect();
+    return axis === "x"
+      ? ba.left + ba.width / 2 - (bb.left + bb.width / 2)
+      : ba.top + ba.height / 2 - (bb.top + bb.height / 2);
+  });
+  const first = sorted[0].getBoundingRect();
+  const last = sorted[sorted.length - 1].getBoundingRect();
+  if (axis === "x") {
+    const total = sorted.reduce((s, o) => s + o.getBoundingRect().width, 0);
+    const span = last.left + last.width - first.left;
+    const gap = (span - total) / (sorted.length - 1);
+    let cursor = first.left;
+    for (const o of sorted) {
+      const b = o.getBoundingRect();
+      o.set({ left: (o.left ?? 0) + (cursor - b.left) });
+      o.setCoords();
+      cursor += b.width + gap;
+    }
+  } else {
+    const total = sorted.reduce((s, o) => s + o.getBoundingRect().height, 0);
+    const span = last.top + last.height - first.top;
+    const gap = (span - total) / (sorted.length - 1);
+    let cursor = first.top;
+    for (const o of sorted) {
+      const b = o.getBoundingRect();
+      o.set({ top: (o.top ?? 0) + (cursor - b.top) });
+      o.setCoords();
+      cursor += b.height + gap;
+    }
+  }
+  ed.getCanvas().requestRenderAll();
+  ed.bumpRevision();
+  commit();
+}
 </script>
 
 <template>
-  <div v-if="false" class="selection-menu">T9 待实现</div>
+  <div
+    v-if="kind !== 'none'"
+    ref="barEl"
+    class="selection-menu"
+    :class="{ below }"
+    :style="{ left: left + 'px', top: top + 'px' }"
+  >
+    <!-- 图片 -->
+    <template v-if="kind === 'image'">
+      <label class="num" title="圆角半径（像素）">
+        <span class="lbl">圆角</span>
+        <input type="number" :value="imageRadius" min="0" step="1" @change="onImageRadius" />
+      </label>
+      <button title="置于顶层" @click="runCommand('bringToFront')">置顶</button>
+      <button title="置于底层" @click="runCommand('sendToBack')">置底</button>
+      <button title="创建副本" @click="runCommand('duplicate')">副本</button>
+      <button class="danger" title="删除" @click="runCommand('delete')">删除</button>
+    </template>
+
+    <!-- 文字 -->
+    <template v-else-if="kind === 'text'">
+      <label class="num">
+        <input type="number" :value="textFontSize" min="1" step="1" title="字号" @change="onFontSize" />
+      </label>
+      <input type="color" :value="textFill" title="文字颜色" @input="onTextFill" @change="onTextFillDone" />
+      <div class="seg">
+        <button :class="{ on: textAlign === 'left' }" title="左对齐" @click="setTextAlign('left')">左</button>
+        <button :class="{ on: textAlign === 'center' }" title="居中" @click="setTextAlign('center')">中</button>
+        <button :class="{ on: textAlign === 'right' }" title="右对齐" @click="setTextAlign('right')">右</button>
+      </div>
+      <button class="bold" :class="{ on: textBold }" title="加粗" @click="toggleBold">B</button>
+    </template>
+
+    <!-- 矩形 -->
+    <template v-else-if="kind === 'rect'">
+      <input type="color" :value="rectFill" title="填充色" @input="onRectFill" @change="onRectFillDone" />
+      <label class="num" title="圆角半径（像素）">
+        <span class="lbl">圆角</span>
+        <input type="number" :value="rectRadius" min="0" step="1" @change="onRectRadius" />
+      </label>
+      <button title="置于顶层" @click="runCommand('bringToFront')">置顶</button>
+      <button title="置于底层" @click="runCommand('sendToBack')">置底</button>
+      <button class="danger" title="删除" @click="runCommand('delete')">删除</button>
+    </template>
+
+    <!-- 多选 -->
+    <template v-else>
+      <div class="seg">
+        <button title="左对齐" @click="alignSelected('left')">左</button>
+        <button title="水平居中" @click="alignSelected('center')">中</button>
+        <button title="右对齐" @click="alignSelected('right')">右</button>
+      </div>
+      <div class="seg">
+        <button title="顶对齐" @click="alignSelected('top')">顶</button>
+        <button title="垂直居中" @click="alignSelected('middle')">中</button>
+        <button title="底对齐" @click="alignSelected('bottom')">底</button>
+      </div>
+      <div class="seg">
+        <button title="水平分布（等间距）" :disabled="!canDistribute" @click="distributeSelected('x')">横分</button>
+        <button title="垂直分布（等间距）" :disabled="!canDistribute" @click="distributeSelected('y')">纵分</button>
+      </div>
+      <button title="创建副本" @click="runCommand('duplicate')">副本</button>
+      <button class="danger" title="删除" @click="runCommand('delete')">删除</button>
+    </template>
+  </div>
 </template>
 
 <style scoped>
@@ -34,5 +438,78 @@
   background: var(--bg3);
   box-shadow: 0 6px 24px rgb(0 0 0 / 0.45);
   pointer-events: auto;
+  z-index: 9;
+  /* 默认贴在对象上方：水平居中，垂直向上让出自身高度。 */
+  transform: translate(-50%, -100%);
+  white-space: nowrap;
+}
+
+/* 翻到对象下方。 */
+.selection-menu.below {
+  transform: translate(-50%, 0);
+}
+
+.selection-menu button {
+  padding: 3px 8px;
+  font-size: 12px;
+  line-height: 1.4;
+  border-radius: 6px;
+}
+
+.selection-menu button.on {
+  border-color: var(--accent);
+  background: var(--accent);
+  color: #fff;
+}
+
+.selection-menu button.danger:hover {
+  border-color: var(--danger);
+  color: var(--danger);
+}
+
+.selection-menu button:disabled {
+  opacity: 0.4;
+  cursor: default;
+}
+
+.selection-menu .bold {
+  font-weight: 700;
+}
+
+.seg {
+  display: flex;
+  gap: 2px;
+  padding: 0 2px;
+}
+
+.seg button {
+  padding: 3px 6px;
+}
+
+.num {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  margin: 0;
+}
+
+.num .lbl {
+  color: var(--fg-dim);
+  font-size: 12px;
+}
+
+.num input {
+  width: 52px;
+  padding: 2px 4px;
+  font-size: 12px;
+}
+
+.selection-menu input[type="color"] {
+  width: 24px;
+  height: 24px;
+  padding: 2px;
+  border-radius: 6px;
+  background: var(--bg);
+  cursor: pointer;
 }
 </style>