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Neuer Hook useSlideWordPositions: Schiebt alle erkannten Woerter von links nach rechts ueber die Pixel-Projektion bis jedes Wort auf seiner Tinte einrastet. Kein Wort geht verloren, keine Cluster-Matching-Regeln noetig. Toggle-Button (Slide/Cluster) in der Overlay-Toolbar zum Umschalten. Bestehender Cluster-Algorithmus bleibt als Alternative erhalten. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
636 lines
23 KiB
TypeScript
636 lines
23 KiB
TypeScript
'use client'
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import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
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import type { GridResult, GridCell, RowResult, RowItem } from '@/app/(admin)/ai/ocr-overlay/types'
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import { usePixelWordPositions } from './usePixelWordPositions'
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import { useSlideWordPositions } from './useSlideWordPositions'
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const KLAUSUR_API = '/klausur-api'
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interface OverlayReconstructionProps {
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sessionId: string | null
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onNext: () => void
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}
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interface EditableCell {
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cellId: string
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text: string
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originalText: string
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bboxPct: { x: number; y: number; w: number; h: number }
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colType: string
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rowIndex: number
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colIndex: number
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}
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type UndoAction = { cellId: string; oldText: string; newText: string }
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export function OverlayReconstruction({ sessionId, onNext }: OverlayReconstructionProps) {
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const [status, setStatus] = useState<'loading' | 'ready' | 'saving' | 'saved' | 'error'>('loading')
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const [error, setError] = useState('')
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const [cells, setCells] = useState<EditableCell[]>([])
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const [gridCells, setGridCells] = useState<GridCell[]>([])
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const [editedTexts, setEditedTexts] = useState<Map<string, string>>(new Map())
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// Undo/Redo
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const [undoStack, setUndoStack] = useState<UndoAction[]>([])
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const [redoStack, setRedoStack] = useState<UndoAction[]>([])
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// Overlay state
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const [rows, setRows] = useState<RowItem[]>([])
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const [imageNaturalSize, setImageNaturalSize] = useState<{ w: number; h: number } | null>(null)
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const [fontScale, setFontScale] = useState(0.7)
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const [globalBold, setGlobalBold] = useState(false)
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const [imageRotation, setImageRotation] = useState<0 | 180>(0)
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const [textOpacity, setTextOpacity] = useState(100)
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const [textColor, setTextColor] = useState<'red' | 'blue' | 'black'>('red')
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const [positioningMode, setPositioningMode] = useState<'cluster' | 'slide'>('slide')
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const reconRef = useRef<HTMLDivElement>(null)
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const [reconWidth, setReconWidth] = useState(0)
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// Pixel-based word positions (both algorithms run, toggle selects which to use)
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const overlayImageUrl = sessionId
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? `${KLAUSUR_API}/api/v1/ocr-pipeline/sessions/${sessionId}/image/cropped`
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: ''
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const clusterPositions = usePixelWordPositions(
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overlayImageUrl,
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gridCells,
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status === 'ready',
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imageRotation,
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)
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const slidePositions = useSlideWordPositions(
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overlayImageUrl,
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gridCells,
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status === 'ready',
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imageRotation,
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)
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const cellWordPositions = positioningMode === 'slide' ? slidePositions : clusterPositions
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// Track container width
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useEffect(() => {
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const el = reconRef.current
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if (!el) return
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const obs = new ResizeObserver(entries => {
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for (const entry of entries) setReconWidth(entry.contentRect.width)
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})
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obs.observe(el)
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return () => obs.disconnect()
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}, [status])
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// Load session data
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useEffect(() => {
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if (!sessionId) return
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loadSessionData()
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [sessionId])
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const loadSessionData = async () => {
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if (!sessionId) return
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setStatus('loading')
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try {
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const res = await fetch(`${KLAUSUR_API}/api/v1/ocr-pipeline/sessions/${sessionId}`)
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if (!res.ok) throw new Error(`HTTP ${res.status}`)
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const data = await res.json()
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const wordResult: GridResult | undefined = data.word_result
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if (!wordResult) {
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setError('Keine Worterkennungsdaten gefunden. Bitte zuerst den Woerter-Schritt abschliessen.')
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setStatus('error')
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return
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}
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const rawGridCells: GridCell[] = wordResult.cells || []
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setGridCells(rawGridCells)
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const editableCells: EditableCell[] = rawGridCells.map(c => ({
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cellId: c.cell_id,
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text: c.text,
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originalText: c.text,
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bboxPct: c.bbox_pct,
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colType: c.col_type,
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rowIndex: c.row_index,
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colIndex: c.col_index,
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}))
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setCells(editableCells)
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setEditedTexts(new Map())
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setUndoStack([])
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setRedoStack([])
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// Load rows
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const rowResult: RowResult | undefined = data.row_result
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if (rowResult?.rows) setRows(rowResult.rows)
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// Store image dimensions
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if (wordResult.image_width && wordResult.image_height) {
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setImageNaturalSize({ w: wordResult.image_width, h: wordResult.image_height })
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}
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setStatus('ready')
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} catch (e: unknown) {
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setError(e instanceof Error ? e.message : String(e))
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setStatus('error')
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}
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}
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const handleTextChange = useCallback((cellId: string, newText: string) => {
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setEditedTexts(prev => {
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const oldText = prev.get(cellId)
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const cell = cells.find(c => c.cellId === cellId)
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const prevText = oldText ?? cell?.text ?? ''
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setUndoStack(stack => [...stack, { cellId, oldText: prevText, newText }])
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setRedoStack([])
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const next = new Map(prev)
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next.set(cellId, newText)
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return next
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})
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}, [cells])
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const undo = useCallback(() => {
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setUndoStack(stack => {
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if (stack.length === 0) return stack
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const action = stack[stack.length - 1]
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const newStack = stack.slice(0, -1)
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setRedoStack(rs => [...rs, action])
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setEditedTexts(prev => {
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const next = new Map(prev)
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next.set(action.cellId, action.oldText)
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return next
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})
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return newStack
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})
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}, [])
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const redo = useCallback(() => {
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setRedoStack(stack => {
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if (stack.length === 0) return stack
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const action = stack[stack.length - 1]
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const newStack = stack.slice(0, -1)
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setUndoStack(us => [...us, action])
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setEditedTexts(prev => {
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const next = new Map(prev)
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next.set(action.cellId, action.newText)
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return next
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})
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return newStack
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})
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}, [])
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const resetCell = useCallback((cellId: string) => {
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setEditedTexts(prev => {
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const next = new Map(prev)
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next.delete(cellId)
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return next
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})
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}, [])
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// Keyboard shortcuts
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useEffect(() => {
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const handler = (e: KeyboardEvent) => {
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if ((e.metaKey || e.ctrlKey) && e.key === 'z') {
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e.preventDefault()
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if (e.shiftKey) redo()
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else undo()
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}
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}
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document.addEventListener('keydown', handler)
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return () => document.removeEventListener('keydown', handler)
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}, [undo, redo])
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const getDisplayText = useCallback((cell: EditableCell): string => {
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return editedTexts.get(cell.cellId) ?? cell.text
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}, [editedTexts])
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const isEdited = useCallback((cell: EditableCell): boolean => {
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const edited = editedTexts.get(cell.cellId)
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return edited !== undefined && edited !== cell.originalText
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}, [editedTexts])
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const changedCount = useMemo(() => {
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let count = 0
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for (const cell of cells) {
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if (isEdited(cell)) count++
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}
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return count
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}, [cells, isEdited])
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// Tab navigation
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const sortedCellIds = useMemo(() => {
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return [...cells]
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.sort((a, b) => a.rowIndex !== b.rowIndex ? a.rowIndex - b.rowIndex : a.colIndex - b.colIndex)
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.map(c => c.cellId)
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}, [cells])
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const handleKeyDown = useCallback((e: React.KeyboardEvent, cellId: string) => {
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if (e.key === 'Tab') {
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e.preventDefault()
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const idx = sortedCellIds.indexOf(cellId)
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const nextIdx = e.shiftKey ? idx - 1 : idx + 1
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if (nextIdx >= 0 && nextIdx < sortedCellIds.length) {
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const nextId = sortedCellIds[nextIdx]
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const el = document.getElementById(`cell-${nextId}`)
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el?.focus()
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}
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}
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}, [sortedCellIds])
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const saveReconstruction = useCallback(async () => {
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if (!sessionId) return
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setStatus('saving')
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try {
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const cellUpdates = Array.from(editedTexts.entries())
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.filter(([cellId, text]) => {
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const cell = cells.find(c => c.cellId === cellId)
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return cell && text !== cell.originalText
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})
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.map(([cellId, text]) => ({ cell_id: cellId, text }))
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if (cellUpdates.length === 0) {
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setStatus('saved')
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return
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}
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const res = await fetch(`${KLAUSUR_API}/api/v1/ocr-pipeline/sessions/${sessionId}/reconstruction`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ cells: cellUpdates }),
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})
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if (!res.ok) {
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const data = await res.json().catch(() => ({}))
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throw new Error(data.detail || `HTTP ${res.status}`)
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}
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setStatus('saved')
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} catch (e: unknown) {
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setError(e instanceof Error ? e.message : String(e))
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setStatus('error')
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}
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}, [sessionId, editedTexts, cells])
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const dewarpedUrl = sessionId
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? `${KLAUSUR_API}/api/v1/ocr-pipeline/sessions/${sessionId}/image/cropped`
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: ''
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// Compute median cell height (in px) for consistent font sizing
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// Must be before early returns (Rules of Hooks)
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const medianCellHeightPx = useMemo(() => {
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const imgWVal = imageNaturalSize?.w || 1
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const imgHVal = imageNaturalSize?.h || 1
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const cH = reconWidth * (imgHVal / imgWVal)
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if (cells.length === 0 || cH === 0) return 40
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const heights = cells.map(c => cH * (c.bboxPct.h / 100)).sort((a, b) => a - b)
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const mid = Math.floor(heights.length / 2)
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return heights.length % 2 === 0 ? (heights[mid - 1] + heights[mid]) / 2 : heights[mid]
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}, [cells, reconWidth, imageNaturalSize])
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if (!sessionId) {
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return <div className="text-center py-12 text-gray-400">Bitte zuerst eine Session auswaehlen.</div>
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}
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if (status === 'loading') {
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return (
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<div className="flex items-center gap-3 justify-center py-12">
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<div className="animate-spin rounded-full h-5 w-5 border-b-2 border-teal-500" />
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<span className="text-gray-500">Overlay-Daten werden geladen...</span>
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</div>
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)
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}
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if (status === 'error') {
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return (
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<div className="flex flex-col items-center justify-center py-12 text-center">
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<div className="text-5xl mb-4">⚠️</div>
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<h3 className="text-lg font-medium text-red-600 dark:text-red-400 mb-2">Fehler</h3>
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<p className="text-sm text-gray-500 dark:text-gray-400 max-w-lg mb-4">{error}</p>
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<div className="flex gap-3">
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<button onClick={() => { setError(''); loadSessionData() }}
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className="px-5 py-2 bg-teal-600 text-white rounded-lg hover:bg-teal-700 transition-colors text-sm">
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Erneut versuchen
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</button>
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<button onClick={onNext}
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className="px-5 py-2 bg-gray-200 dark:bg-gray-700 text-gray-700 dark:text-gray-300 rounded-lg hover:bg-gray-300 dark:hover:bg-gray-600 transition-colors text-sm">
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Ueberspringen →
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</button>
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</div>
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</div>
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)
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}
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if (status === 'saved') {
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return (
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<div className="flex flex-col items-center justify-center py-12 text-center">
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<div className="text-5xl mb-4">✅</div>
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<h3 className="text-lg font-medium text-gray-700 dark:text-gray-300 mb-2">Overlay gespeichert</h3>
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<p className="text-sm text-gray-500 dark:text-gray-400 mb-6">
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{changedCount > 0 ? `${changedCount} Zellen wurden aktualisiert.` : 'Keine Aenderungen vorgenommen.'}
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</p>
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<button onClick={onNext}
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className="px-6 py-2.5 bg-teal-600 text-white rounded-lg hover:bg-teal-700 transition-colors font-medium">
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Fertig
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</button>
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</div>
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)
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}
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const imgW = imageNaturalSize?.w || 1
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const imgH = imageNaturalSize?.h || 1
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const containerH = reconWidth * (imgH / imgW)
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return (
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<div className="space-y-3">
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{/* Toolbar */}
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<div className="flex items-center justify-between bg-white dark:bg-gray-800 rounded-lg border border-gray-200 dark:border-gray-700 px-3 py-2">
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<div className="flex items-center gap-2">
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<h3 className="text-sm font-medium text-gray-700 dark:text-gray-300">
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Overlay-Rekonstruktion
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</h3>
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<span className="text-xs text-gray-400">
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{cells.length} Zellen · {changedCount} geaendert
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</span>
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</div>
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<div className="flex items-center gap-2">
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{/* Undo/Redo */}
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<button
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onClick={undo}
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disabled={undoStack.length === 0}
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className="px-2 py-1 text-xs border border-gray-300 dark:border-gray-600 rounded hover:bg-gray-50 dark:hover:bg-gray-700 disabled:opacity-30"
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title="Rueckgaengig (Ctrl+Z)"
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>
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↩
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</button>
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<button
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onClick={redo}
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disabled={redoStack.length === 0}
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className="px-2 py-1 text-xs border border-gray-300 dark:border-gray-600 rounded hover:bg-gray-50 dark:hover:bg-gray-700 disabled:opacity-30"
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title="Wiederholen (Ctrl+Shift+Z)"
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>
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↪
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</button>
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<div className="w-px h-5 bg-gray-300 dark:bg-gray-600 mx-1" />
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{/* Font scale */}
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<label className="flex items-center gap-1 text-xs text-gray-600 dark:text-gray-400">
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Schrift
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<input
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type="range" min={30} max={120} value={Math.round(fontScale * 100)}
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onChange={e => setFontScale(Number(e.target.value) / 100)}
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className="w-20 h-1 accent-teal-600"
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/>
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<span className="w-8 text-right font-mono">{Math.round(fontScale * 100)}%</span>
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</label>
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<button
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onClick={() => setGlobalBold(b => !b)}
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className={`px-2 py-1 text-xs rounded border transition-colors font-bold ${
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globalBold
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? 'bg-teal-600 text-white border-teal-600'
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: 'bg-white dark:bg-gray-700 text-gray-600 dark:text-gray-400 border-gray-300 dark:border-gray-600'
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}`}
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>
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B
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</button>
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<button
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onClick={() => setImageRotation(r => r === 0 ? 180 : 0)}
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className={`px-2 py-1 text-xs rounded border transition-colors ${
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imageRotation === 180
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? 'bg-teal-600 text-white border-teal-600'
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: 'bg-white dark:bg-gray-700 text-gray-600 dark:text-gray-400 border-gray-300 dark:border-gray-600'
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}`}
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title="Bild 180° drehen"
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>
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180°
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</button>
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<div className="w-px h-5 bg-gray-300 dark:bg-gray-600 mx-1" />
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{/* Positioning mode toggle */}
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<button
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onClick={() => setPositioningMode(m => m === 'slide' ? 'cluster' : 'slide')}
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className={`px-2 py-1 text-xs rounded border transition-colors ${
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positioningMode === 'slide'
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? 'bg-orange-500 text-white border-orange-500'
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: 'bg-white dark:bg-gray-700 text-gray-600 dark:text-gray-400 border-gray-300 dark:border-gray-600'
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}`}
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title={positioningMode === 'slide'
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? 'Slide-Modus: Woerter von links nach rechts schieben (klick fuer Cluster-Modus)'
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: 'Cluster-Modus: Woerter an Pixel-Cluster zuordnen (klick fuer Slide-Modus)'}
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>
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{positioningMode === 'slide' ? 'Slide' : 'Cluster'}
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</button>
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<div className="w-px h-5 bg-gray-300 dark:bg-gray-600 mx-1" />
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{/* Text color */}
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{(['red', 'blue', 'black'] as const).map(c => (
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<button
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key={c}
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onClick={() => setTextColor(c)}
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className={`w-5 h-5 rounded-full border-2 transition-colors ${
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textColor === c ? 'border-teal-500 ring-1 ring-teal-300' : 'border-gray-300 dark:border-gray-600'
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}`}
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style={{ backgroundColor: c === 'black' ? '#1a1a1a' : c }}
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title={`Textfarbe: ${c}`}
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/>
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))}
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<div className="w-px h-5 bg-gray-300 dark:bg-gray-600 mx-1" />
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{/* Text opacity */}
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<label className="flex items-center gap-1 text-xs text-gray-600 dark:text-gray-400">
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Text
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<input
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type="range" min={0} max={100} value={textOpacity}
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onChange={e => setTextOpacity(Number(e.target.value))}
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className="w-16 h-1 accent-teal-600"
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/>
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<span className="w-8 text-right font-mono">{textOpacity}%</span>
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</label>
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<div className="w-px h-5 bg-gray-300 dark:bg-gray-600 mx-1" />
|
|
|
|
<button
|
|
onClick={saveReconstruction}
|
|
disabled={status === 'saving'}
|
|
className="px-4 py-1.5 text-xs bg-teal-600 text-white rounded-lg hover:bg-teal-700 disabled:opacity-50 transition-colors font-medium"
|
|
>
|
|
Speichern
|
|
</button>
|
|
</div>
|
|
</div>
|
|
|
|
{/* True overlay: text layer on top of original image */}
|
|
<div className="border border-gray-200 dark:border-gray-700 rounded-lg overflow-hidden bg-gray-50 dark:bg-gray-900">
|
|
<div
|
|
ref={reconRef}
|
|
className="relative"
|
|
style={{ aspectRatio: `${imgW} / ${imgH}` }}
|
|
>
|
|
{/* Background: original image */}
|
|
{/* eslint-disable-next-line @next/next/no-img-element */}
|
|
<img
|
|
src={dewarpedUrl}
|
|
alt="Original"
|
|
className="absolute inset-0 w-full h-full object-contain"
|
|
onLoad={(e) => {
|
|
const img = e.target as HTMLImageElement
|
|
setImageNaturalSize({ w: img.naturalWidth, h: img.naturalHeight })
|
|
}}
|
|
/>
|
|
|
|
{/* Text overlay layer */}
|
|
<div
|
|
className="absolute inset-0"
|
|
style={{ opacity: textOpacity / 100 }}
|
|
>
|
|
{/* Row lines */}
|
|
{rows.map((row, i) => (
|
|
<div
|
|
key={`row-${i}`}
|
|
className="absolute left-0 right-0 border-t border-cyan-400/40"
|
|
style={{ top: `${(row.y / imgH) * 100}%` }}
|
|
/>
|
|
))}
|
|
|
|
{/* Pixel-positioned words / editable inputs */}
|
|
{cells.map((cell) => {
|
|
const displayText = getDisplayText(cell)
|
|
const edited = isEdited(cell)
|
|
const wordPos = cellWordPositions.get(cell.cellId)
|
|
const bboxPct = cell.bboxPct
|
|
const colorValue = textColor === 'black' ? '#1a1a1a' : textColor
|
|
|
|
// Pixel-analysed: render word-groups at detected positions
|
|
if (wordPos && wordPos.length > 0) {
|
|
return wordPos.map((wp, i) => {
|
|
const autoFontPx = medianCellHeightPx * wp.fontRatio * fontScale
|
|
const fs = Math.max(6, autoFontPx)
|
|
|
|
if (wordPos.length > 1) {
|
|
return (
|
|
<span
|
|
key={`${cell.cellId}_wp_${i}`}
|
|
className="absolute leading-none pointer-events-none select-none"
|
|
style={{
|
|
left: `${wp.xPct}%`,
|
|
top: `${bboxPct.y}%`,
|
|
width: `${wp.wPct}%`,
|
|
height: `${bboxPct.h}%`,
|
|
fontSize: `${fs}px`,
|
|
fontWeight: globalBold ? 'bold' : 'normal',
|
|
fontFamily: "'Liberation Sans', Arial, sans-serif",
|
|
display: 'flex',
|
|
alignItems: 'center',
|
|
whiteSpace: 'nowrap',
|
|
overflow: 'visible',
|
|
color: colorValue,
|
|
}}
|
|
>
|
|
{wp.text}
|
|
</span>
|
|
)
|
|
}
|
|
|
|
return (
|
|
<div key={`${cell.cellId}_wp_${i}`} className="absolute group" style={{
|
|
left: `${wp.xPct}%`,
|
|
top: `${bboxPct.y}%`,
|
|
width: `${wp.wPct}%`,
|
|
height: `${bboxPct.h}%`,
|
|
}}>
|
|
<input
|
|
id={`cell-${cell.cellId}`}
|
|
type="text"
|
|
value={displayText}
|
|
onChange={(e) => handleTextChange(cell.cellId, e.target.value)}
|
|
onKeyDown={(e) => handleKeyDown(e, cell.cellId)}
|
|
className={`w-full h-full bg-transparent border-0 outline-none px-0 transition-colors ${
|
|
edited ? 'bg-green-50/30' : ''
|
|
}`}
|
|
style={{
|
|
fontSize: `${fs}px`,
|
|
fontWeight: globalBold ? 'bold' : 'normal',
|
|
fontFamily: "'Liberation Sans', Arial, sans-serif",
|
|
lineHeight: '1',
|
|
color: colorValue,
|
|
}}
|
|
title={`${cell.cellId} (${cell.colType})`}
|
|
/>
|
|
{edited && (
|
|
<button
|
|
onClick={() => resetCell(cell.cellId)}
|
|
className="absolute -top-1 -right-1 w-4 h-4 bg-red-500 text-white rounded-full text-[9px] leading-none opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center"
|
|
title="Zuruecksetzen"
|
|
>
|
|
×
|
|
</button>
|
|
)}
|
|
</div>
|
|
)
|
|
})
|
|
}
|
|
|
|
// Fallback: no pixel data — single input at cell bbox
|
|
if (!cell.text) return null
|
|
|
|
const fontSize = Math.max(6, medianCellHeightPx * fontScale)
|
|
return (
|
|
<div key={cell.cellId} className="absolute group" style={{
|
|
left: `${bboxPct.x}%`,
|
|
top: `${bboxPct.y}%`,
|
|
width: `${bboxPct.w}%`,
|
|
height: `${bboxPct.h}%`,
|
|
}}>
|
|
<input
|
|
id={`cell-${cell.cellId}`}
|
|
type="text"
|
|
value={displayText}
|
|
onChange={(e) => handleTextChange(cell.cellId, e.target.value)}
|
|
onKeyDown={(e) => handleKeyDown(e, cell.cellId)}
|
|
className={`w-full h-full bg-transparent border-0 outline-none px-0 transition-colors ${
|
|
edited ? 'bg-green-50/30' : ''
|
|
}`}
|
|
style={{
|
|
fontSize: `${fontSize}px`,
|
|
fontWeight: globalBold ? 'bold' : 'normal',
|
|
fontFamily: "'Liberation Sans', Arial, sans-serif",
|
|
lineHeight: '1',
|
|
color: colorValue,
|
|
}}
|
|
title={`${cell.cellId} (${cell.colType})`}
|
|
/>
|
|
{edited && (
|
|
<button
|
|
onClick={() => resetCell(cell.cellId)}
|
|
className="absolute -top-1 -right-1 w-4 h-4 bg-red-500 text-white rounded-full text-[9px] leading-none opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center"
|
|
title="Zuruecksetzen"
|
|
>
|
|
×
|
|
</button>
|
|
)}
|
|
</div>
|
|
)
|
|
})}
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
{/* Bottom action */}
|
|
<div className="flex justify-end">
|
|
<button
|
|
onClick={() => {
|
|
if (changedCount > 0) {
|
|
saveReconstruction()
|
|
} else {
|
|
onNext()
|
|
}
|
|
}}
|
|
className="px-6 py-2.5 bg-teal-600 text-white rounded-lg hover:bg-teal-700 transition-colors font-medium text-sm"
|
|
>
|
|
{changedCount > 0 ? 'Speichern & Fertig' : 'Fertig'}
|
|
</button>
|
|
</div>
|
|
</div>
|
|
)
|
|
}
|