MAIN_PLAN.md

@@ -237,6 +237,17 @@
   - `npm test -s`: 164 파일, 289 테스트 전부 그린
   - React 경고(setState in render) 제거, 테스트 플래키성 해소
 
+### 키보드 nudge × 멀티선택 복합 (2025-11-17)
+- TDD
+  - `components/wysiwyg/Canvas.nudge.multiselect.acceptance.test.tsx`
+    - ArrowRight: 1px 이동 후 그리드 스냅 적용(이동 축만 스냅)
+    - Shift+ArrowUp: 스냅 없이 정확히 -1px 이동(미세 이동)
+    - Alt+ArrowRight: +16px 이동 후 그리드 스냅(가속 이동)
+- 구현: `components/wysiwyg/Canvas.tsx`
+  - `onKeyDown`: 앵커(마지막 선택) 기준 목표 좌표(tx, ty) → 스냅 적용(nx, ny) → 델타(ddx, ddy) 산출 → 선택 집합 전체에 동일 델타 적용
+  - 이동하지 않은 축은 기존 좌표 유지하여 비의도 축 보정 방지
+- 결과: 전체 테스트 그린(168 파일 / 295 테스트)
+
 ## 목표
 - 비개발자도 사용 가능한 단일 페이지 랜딩 페이지 빌더.
 - 결과물: 정적 ZIP(HTML/CSS/JS) 다운로드. 이미지: 외부 URL 또는 로컬 업로드(서버 저장 없음, ZIP에 패키징). 폰트는 외부 CDN 허용.

components/wysiwyg/Canvas.nudge.multiselect.acceptance.test.tsx

@@ -0,0 +1,98 @@
+import { describe, it, expect } from 'vitest'
+import { render, screen, fireEvent } from '@testing-library/react'
+import { WysiwygBuilderPage } from '@/components/wysiwyg/WysiwygBuilderPage'
+
+function getBoxes(ids: string[]) {
+  return ids.map((id) => {
+    const el = screen.getByTestId(`obj-${id}`) as HTMLElement
+    const s = el.style as CSSStyleDeclaration
+    return {
+      id,
+      left: parseInt(s.left || '0', 10),
+      top: parseInt(s.top || '0', 10),
+      width: parseInt(s.width || '0', 10),
+      height: parseInt(s.height || '0', 10),
+    }
+  })
+}
+
+function snap8(v: number) { return Math.round(v / 8) * 8 }
+
+async function addTextAt(x: number, y: number) {
+  fireEvent.click(screen.getByRole('button', { name: /^Add Text$/i }))
+  const all = await screen.findAllByTestId(/obj-text-/)
+  const obj = all[all.length - 1] as HTMLElement
+  // select the newly added object
+  fireEvent.mouseDown(obj, { clientX: x, clientY: y })
+  fireEvent.mouseUp(screen.getByTestId('wysiwyg-canvas'))
+  // move via props inputs (X/Y) for the selected object
+  const xInput = screen.getByLabelText('X') as HTMLInputElement
+  const yInput = screen.getByLabelText('Y') as HTMLInputElement
+  fireEvent.change(xInput, { target: { value: String(x) } })
+  fireEvent.change(yInput, { target: { value: String(y) } })
+  return obj.getAttribute('data-testid')!.replace('obj-', '')
+}
+
+describe('Canvas multiselect keyboard nudge', () => {
+  it('ArrowRight applies 1px then grid snap to both (no modifier)', async () => {
+    render(<WysiwygBuilderPage />)
+    const id1 = await addTextAt(60, 60)
+    const id2 = await addTextAt(140, 60)
+
+    const canvas = screen.getByTestId('wysiwyg-canvas')
+    // marquee select both
+    fireEvent.mouseDown(canvas, { clientX: 50, clientY: 50 })
+    fireEvent.mouseMove(canvas, { clientX: 240, clientY: 140 })
+    fireEvent.mouseUp(canvas)
+
+    const before = getBoxes([id1, id2])
+    fireEvent.keyDown(canvas, { key: 'ArrowRight' })
+    const after = getBoxes([id1, id2])
+    const expLeft0 = snap8(before[0].left + 1)
+    const dx = expLeft0 - before[0].left
+    after.forEach((b, i) => {
+      expect(b.left).toBe(before[i].left + dx)
+      expect(b.top).toBe(before[i].top)
+    })
+  })
+
+  it('Shift+ArrowUp moves exactly -1px on Y for both (no snap)', async () => {
+    render(<WysiwygBuilderPage />)
+    const id1 = await addTextAt(60, 60)
+    const id2 = await addTextAt(140, 60)
+
+    const canvas = screen.getByTestId('wysiwyg-canvas')
+    fireEvent.mouseDown(canvas, { clientX: 50, clientY: 50 })
+    fireEvent.mouseMove(canvas, { clientX: 240, clientY: 140 })
+    fireEvent.mouseUp(canvas)
+
+    const before = getBoxes([id1, id2])
+    fireEvent.keyDown(canvas, { key: 'ArrowUp', shiftKey: true })
+    const after = getBoxes([id1, id2])
+    after.forEach((b, i) => {
+      expect(b.top).toBe(before[i].top - 1)
+      expect(b.left).toBe(before[i].left)
+    })
+  })
+
+  it('Alt+ArrowRight moves +16px then snaps to grid for both', async () => {
+    render(<WysiwygBuilderPage />)
+    const id1 = await addTextAt(60, 60)
+    const id2 = await addTextAt(140, 60)
+
+    const canvas = screen.getByTestId('wysiwyg-canvas')
+    fireEvent.mouseDown(canvas, { clientX: 50, clientY: 50 })
+    fireEvent.mouseMove(canvas, { clientX: 240, clientY: 140 })
+    fireEvent.mouseUp(canvas)
+
+    const before = getBoxes([id1, id2])
+    fireEvent.keyDown(canvas, { key: 'ArrowRight', altKey: true })
+    const after = getBoxes([id1, id2])
+    const expLeft0 = snap8(before[0].left + 16)
+    const dx = expLeft0 - before[0].left
+    after.forEach((b, i) => {
+      expect(b.left).toBe(before[i].left + dx)
+      expect(b.top).toBe(before[i].top)
+    })
+  })
+})

components/wysiwyg/Canvas.tsx

@@ -111,14 +111,22 @@ export function Canvas({ frame, onChange, onSelectIds, enableGuides = true }: Ca
     else if (e.key === 'ArrowDown') dy = step
     else return
     e.preventDefault()
-    updateObject(selected.id, (o) => {
-      const tx = o.x + dx
-      const ty = o.y + dy
-      const nx = useSnap ? snap8(tx) : tx
-      const ny = useSnap ? snap8(ty) : ty
-      return { ...o, x: nx, y: ny }
-    })
-  }, [selected, updateObject])
+
+    // 기준 객체(선택 anchor)에 대해 목표 좌표 계산 후 델타를 산출하여 멀티선택 전체에 동일 적용
+    const tx = selected.x + dx
+    const ty = selected.y + dy
+    // 스냅은 이동한 축에만 적용, 이동이 없는 축은 값 유지
+    const nx = dx !== 0 ? (useSnap ? snap8(tx) : tx) : selected.x
+    const ny = dy !== 0 ? (useSnap ? snap8(ty) : ty) : selected.y
+    const ddx = nx - selected.x
+    const ddy = ny - selected.y
+
+    if (selectedIds.length > 1) {
+      updateObjects(selectedIds, (o) => ({ ...o, x: o.x + ddx, y: o.y + ddy }))
+    } else {
+      updateObject(selected.id, (o) => ({ ...o, x: o.x + ddx, y: o.y + ddy }))
+    }
+  }, [selected, selectedIds, updateObject, updateObjects])
 
   const onMouseDownObj = useCallback((e: React.MouseEvent, o: WObject) => {
     if (e.shiftKey) {