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breakpilot-lehrer/admin-lehrer/components/ocr-kombi/StepAnsicht.tsx
Benjamin Admin dcb873db35
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StepAnsicht: section-based layout with averaged row heights
Major rewrite of reconstruction rendering:
- Page split into vertical sections (content/box) around box boundaries
- Content sections: uniform row height = (last_row - first_row) / (n-1)
- Box sections: rows evenly distributed within box height
- Content rows positioned absolutely at original y-coordinates
- Font size derived from row height (55% of row height)
- Multi-line cells (bullets) get expanded height with indentation
- Boxes render at exact bbox position with colored border
- Preparation for unified grid where boxes become part of main grid

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-14 15:29:40 +02:00

483 lines
18 KiB
TypeScript

'use client'
/**
* StepAnsicht — Split-view page layout comparison.
*
* Left: Original scan with OCR word overlay
* Right: Reconstructed layout with averaged row heights per section
*
* Layout principle: the page is divided into vertical sections separated
* by boxes. Each section gets a uniform row height calculated from
* (last_row_y - first_row_y) / (num_rows - 1). Boxes are rendered
* inline between sections (not as floating overlays).
*/
import { useEffect, useMemo, useRef, useState } from 'react'
import { useGridEditor } from '@/components/grid-editor/useGridEditor'
import type { GridZone, GridEditorCell, GridRow } from '@/components/grid-editor/types'
const KLAUSUR_API = '/klausur-api'
interface StepAnsichtProps {
sessionId: string | null
onNext: () => void
}
/** A vertical section of the page: either content rows or a box zone. */
interface PageSection {
type: 'content' | 'box'
yStart: number // pixel y in original image
yEnd: number // pixel y end
zone?: GridZone // for box sections
rows?: GridRow[] // for content sections — subset of content zone rows
avgRowH: number // averaged row height in original pixels
}
function getCellColor(cell: GridEditorCell | undefined): string | null {
if (!cell) return null
if (cell.color_override) return cell.color_override
const colored = cell.word_boxes?.find((wb) => wb.color_name && wb.color_name !== 'black')
return colored?.color ?? null
}
export function StepAnsicht({ sessionId, onNext }: StepAnsichtProps) {
const { grid, loading, error, loadGrid } = useGridEditor(sessionId)
const leftRef = useRef<HTMLDivElement>(null)
const [panelWidth, setPanelWidth] = useState(0)
const [showGrid, setShowGrid] = useState(true)
const [gridSpacing, setGridSpacing] = useState(100)
useEffect(() => {
if (sessionId) loadGrid()
}, [sessionId]) // eslint-disable-line react-hooks/exhaustive-deps
useEffect(() => {
if (!leftRef.current) return
const ro = new ResizeObserver(([entry]) => setPanelWidth(entry.contentRect.width))
ro.observe(leftRef.current)
return () => ro.disconnect()
}, [])
// Build page sections: split content rows around box zones
const sections = useMemo(() => {
if (!grid) return []
const contentZone = grid.zones.find((z) => z.zone_type === 'content')
const boxZones = grid.zones.filter((z) => z.zone_type === 'box')
.sort((a, b) => a.bbox_px.y - b.bbox_px.y)
if (!contentZone) return []
const allRows = contentZone.rows
const result: PageSection[] = []
// Box boundaries sorted by y
const boxBounds = boxZones.map((bz) => ({
zone: bz,
yStart: bz.bbox_px.y,
yEnd: bz.bbox_px.y + bz.bbox_px.h,
}))
// Split content rows into sections around boxes
let currentRows: GridRow[] = []
let boxIdx = 0
for (const row of allRows) {
const ry = row.y_min_px ?? (row as any).y_min ?? 0
// Check if we've passed a box boundary — insert box section
while (boxIdx < boxBounds.length && ry >= boxBounds[boxIdx].yStart) {
// Flush current content section
if (currentRows.length > 0) {
result.push(makeContentSection(currentRows))
currentRows = []
}
// Insert box section
const bb = boxBounds[boxIdx]
const bRows = bb.zone.rows || []
let bAvgH = 35
if (bRows.length >= 2) {
const bys = bRows.map((r) => r.y_min_px ?? (r as any).y_min ?? 0)
bAvgH = (bys[bys.length - 1] - bys[0]) / (bRows.length - 1)
}
result.push({
type: 'box',
yStart: bb.yStart,
yEnd: bb.yEnd,
zone: bb.zone,
avgRowH: bAvgH,
})
boxIdx++
}
// Skip rows that fall inside a box boundary
const insideBox = boxBounds.some((bb) => ry >= bb.yStart && ry <= bb.yEnd)
if (!insideBox) {
currentRows.push(row)
}
}
// Flush remaining content rows
if (currentRows.length > 0) {
result.push(makeContentSection(currentRows))
}
// Insert remaining boxes (if any rows didn't trigger them)
while (boxIdx < boxBounds.length) {
const bb = boxBounds[boxIdx]
const bRows = bb.zone.rows || []
let bAvgH = 35
if (bRows.length >= 2) {
const bys = bRows.map((r) => r.y_min_px ?? (r as any).y_min ?? 0)
bAvgH = (bys[bys.length - 1] - bys[0]) / (bRows.length - 1)
}
result.push({ type: 'box', yStart: bb.yStart, yEnd: bb.yEnd, zone: bb.zone, avgRowH: bAvgH })
boxIdx++
}
return result
}, [grid])
if (loading) {
return (
<div className="flex items-center justify-center py-16">
<div className="w-8 h-8 border-4 border-teal-500 border-t-transparent rounded-full animate-spin" />
<span className="ml-3 text-gray-500">Lade Vorschau...</span>
</div>
)
}
if (error || !grid) {
return (
<div className="p-8 text-center">
<p className="text-red-500 mb-4">{error || 'Keine Grid-Daten.'}</p>
<button onClick={onNext} className="px-5 py-2 bg-teal-600 text-white rounded-lg">Weiter </button>
</div>
)
}
const imgW = grid.image_width || 1
const imgH = grid.image_height || 1
const scale = panelWidth > 0 ? panelWidth / imgW : 0.5
const panelHeight = imgH * scale
const contentZone = grid.zones.find((z) => z.zone_type === 'content')
return (
<div className="space-y-3">
{/* Header */}
<div className="flex items-center justify-between">
<div>
<h3 className="text-lg font-semibold text-gray-900 dark:text-white">Ansicht Original vs. Rekonstruktion</h3>
<p className="text-sm text-gray-500 dark:text-gray-400">
Links: Original mit OCR. Rechts: Rekonstruktion mit gemittelten Zeilenhöhen.
</p>
</div>
<div className="flex items-center gap-2">
<label className="flex items-center gap-1.5 text-xs text-gray-500">
<input type="checkbox" checked={showGrid} onChange={(e) => setShowGrid(e.target.checked)} className="w-3.5 h-3.5 rounded" />
Gitter
</label>
<select value={gridSpacing} onChange={(e) => setGridSpacing(Number(e.target.value))} className="text-xs px-1.5 py-1 rounded border border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-700">
<option value={50}>50px</option>
<option value={100}>100px</option>
<option value={200}>200px</option>
</select>
<button onClick={onNext} className="px-5 py-2 bg-teal-600 text-white rounded-lg hover:bg-teal-700 text-sm font-medium">Weiter </button>
</div>
</div>
{/* Split view */}
<div className="flex gap-2" style={{ height: `${panelHeight + 40}px` }}>
{/* LEFT: Original + OCR overlay */}
<div ref={leftRef} className="flex-1 relative border border-gray-300 dark:border-gray-600 rounded-lg overflow-hidden bg-white dark:bg-gray-900">
<div className="absolute top-0 left-0 px-2 py-0.5 bg-black/60 text-white text-[10px] font-medium rounded-br z-20">Original + OCR</div>
{sessionId && (
<img
src={`${KLAUSUR_API}/api/v1/ocr-pipeline/sessions/${sessionId}/image/words-overlay`}
alt="Original + OCR"
className="absolute inset-0 w-full h-auto"
style={{ height: `${panelHeight}px`, objectFit: 'contain' }}
/>
)}
{showGrid && <CoordinateGrid imgW={imgW} imgH={imgH} scale={scale} spacing={gridSpacing} />}
</div>
{/* RIGHT: Reconstruction */}
<div className="flex-1 relative border border-gray-300 dark:border-gray-600 rounded-lg overflow-hidden bg-white dark:bg-gray-900">
<div className="absolute top-0 left-0 px-2 py-0.5 bg-teal-600/80 text-white text-[10px] font-medium rounded-br z-20">Rekonstruktion</div>
{/* Render sections sequentially */}
{sections.map((sec, si) => {
if (sec.type === 'box' && sec.zone) {
return (
<BoxSectionRenderer
key={`box-${si}`}
zone={sec.zone}
scale={scale}
avgRowH={sec.avgRowH}
/>
)
}
if (sec.type === 'content' && sec.rows && contentZone) {
return (
<ContentSectionRenderer
key={`sec-${si}`}
zone={contentZone}
rows={sec.rows}
yStart={sec.yStart}
scale={scale}
avgRowH={sec.avgRowH}
/>
)
}
return null
})}
{showGrid && <CoordinateGrid imgW={imgW} imgH={imgH} scale={scale} spacing={gridSpacing} />}
</div>
</div>
</div>
)
}
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
function makeContentSection(rows: GridRow[]): PageSection {
const ys = rows.map((r) => r.y_min_px ?? (r as any).y_min ?? 0)
const yEnd = rows[rows.length - 1].y_max_px ?? (rows[rows.length - 1] as any).y_max ?? ys[ys.length - 1] + 30
let avgRowH = 35
if (rows.length >= 2) {
avgRowH = (ys[ys.length - 1] - ys[0]) / (rows.length - 1)
}
return { type: 'content', yStart: ys[0], yEnd, rows, avgRowH }
}
// ---------------------------------------------------------------------------
// Content section renderer — rows from content zone at absolute positions
// ---------------------------------------------------------------------------
function ContentSectionRenderer({ zone, rows, yStart, scale, avgRowH }: {
zone: GridZone; rows: GridRow[]; yStart: number; scale: number; avgRowH: number
}) {
const cellMap = new Map<string, GridEditorCell>()
for (const cell of zone.cells) {
cellMap.set(`${cell.row_index}_${cell.col_index}`, cell)
}
const rowH = avgRowH * scale
const fontSize = Math.max(7, rowH * 0.55)
return (
<>
{rows.map((row, ri) => {
const rowY = (row.y_min_px ?? (row as any).y_min ?? 0) * scale
const isSpanning = zone.cells.some((c) => c.row_index === row.index && c.col_type === 'spanning_header')
// Column widths
const colWidths = zone.columns.map((col) => Math.max(5, ((col.x_max_px ?? 0) - (col.x_min_px ?? 0)) * scale))
const zoneLeft = zone.bbox_px.x * scale
const zoneWidth = zone.bbox_px.w * scale
const totalColW = colWidths.reduce((s, w) => s + w, 0)
const colScale = totalColW > 0 ? zoneWidth / totalColW : 1
return (
<div
key={row.index}
className="absolute"
style={{
left: `${zoneLeft}px`,
top: `${rowY}px`,
width: `${zoneWidth}px`,
height: `${rowH}px`,
display: 'grid',
gridTemplateColumns: colWidths.map((w) => `${(w * colScale).toFixed(1)}px`).join(' '),
fontSize: `${fontSize}px`,
lineHeight: `${rowH}px`,
}}
>
{isSpanning ? (
zone.cells
.filter((c) => c.row_index === row.index && c.col_type === 'spanning_header')
.sort((a, b) => a.col_index - b.col_index)
.map((cell) => {
const colspan = cell.colspan || zone.columns.length
const color = getCellColor(cell)
return (
<div
key={cell.cell_id}
className={`overflow-hidden ${row.is_header ? 'font-bold' : ''}`}
style={{ gridColumn: `${cell.col_index + 1} / ${cell.col_index + 1 + colspan}`, color: color || undefined }}
>
{cell.text}
</div>
)
})
) : (
zone.columns.map((col) => {
const cell = cellMap.get(`${row.index}_${col.index}`)
const color = getCellColor(cell)
const isBold = col.bold || cell?.is_bold || row.is_header
return (
<div
key={col.index}
className={`overflow-hidden text-ellipsis whitespace-nowrap ${isBold ? 'font-bold' : ''}`}
style={{ color: color || undefined }}
>
{cell?.text ?? ''}
</div>
)
})
)}
</div>
)
})}
</>
)
}
// ---------------------------------------------------------------------------
// Box section renderer — box zone at absolute position with border
// ---------------------------------------------------------------------------
function BoxSectionRenderer({ zone, scale, avgRowH }: {
zone: GridZone; scale: number; avgRowH: number
}) {
const boxColor = (zone as any).box_bg_hex || '#6b7280'
if (!zone.cells || zone.cells.length === 0) return null
const left = zone.bbox_px.x * scale
const top = zone.bbox_px.y * scale
const width = zone.bbox_px.w * scale
const height = zone.bbox_px.h * scale
const rowH = avgRowH * scale
const fontSize = Math.max(7, rowH * 0.5)
const cellMap = new Map<string, GridEditorCell>()
for (const cell of zone.cells) {
cellMap.set(`${cell.row_index}_${cell.col_index}`, cell)
}
const colWidths = zone.columns.map((col) => Math.max(5, ((col.x_max_px ?? 0) - (col.x_min_px ?? 0)) * scale))
const totalColW = colWidths.reduce((s, w) => s + w, 0)
const colScale = totalColW > 0 ? width / totalColW : 1
const numCols = zone.columns.length
// Evenly distribute rows within the box
const numRows = zone.rows.length
const evenRowH = numRows > 0 ? height / numRows : rowH
return (
<div
className="absolute overflow-hidden"
style={{
left: `${left}px`,
top: `${top}px`,
width: `${width}px`,
height: `${height}px`,
border: `${Math.max(1.5, 2 * scale)}px solid ${boxColor}`,
backgroundColor: `${boxColor}0a`,
borderRadius: `${Math.max(1, 3 * scale)}px`,
fontSize: `${fontSize}px`,
lineHeight: '1.3',
}}
>
<div style={{ display: 'grid', gridTemplateColumns: colWidths.map((w) => `${(w * colScale).toFixed(1)}px`).join(' ') }}>
{zone.rows.map((row) => {
const isSpanning = zone.cells.some((c) => c.row_index === row.index && c.col_type === 'spanning_header')
// Multi-line height
const maxLines = Math.max(1, ...zone.cells
.filter((c) => c.row_index === row.index)
.map((c) => (c.text ?? '').split('\n').length))
const cellRowH = evenRowH * (maxLines > 1 ? maxLines * 0.7 : 1)
return (
<div key={row.index} style={{ display: 'contents' }}>
{isSpanning ? (
zone.cells
.filter((c) => c.row_index === row.index && c.col_type === 'spanning_header')
.sort((a, b) => a.col_index - b.col_index)
.map((cell) => {
const colspan = cell.colspan || numCols
const color = getCellColor(cell)
return (
<div
key={cell.cell_id}
className={`px-1 overflow-hidden ${row.is_header ? 'font-bold' : ''}`}
style={{
gridColumn: `${cell.col_index + 1} / ${cell.col_index + 1 + colspan}`,
height: `${cellRowH}px`,
color: color || undefined,
whiteSpace: 'pre-wrap',
display: 'flex',
alignItems: 'center',
}}
>
{cell.text}
</div>
)
})
) : (
zone.columns.map((col) => {
const cell = cellMap.get(`${row.index}_${col.index}`)
const color = getCellColor(cell)
const isBold = col.bold || cell?.is_bold || row.is_header
const text = cell?.text ?? ''
const isMultiLine = text.includes('\n')
return (
<div
key={col.index}
className={`px-1 overflow-hidden ${isBold ? 'font-bold' : ''}`}
style={{
height: `${cellRowH}px`,
color: color || undefined,
whiteSpace: isMultiLine ? 'pre-wrap' : 'nowrap',
textOverflow: isMultiLine ? undefined : 'ellipsis',
display: 'flex',
alignItems: isMultiLine ? 'flex-start' : 'center',
paddingLeft: isMultiLine ? `${fontSize * 0.5}px` : undefined,
}}
>
{text}
</div>
)
})
)}
</div>
)
})}
</div>
</div>
)
}
// ---------------------------------------------------------------------------
// Coordinate grid
// ---------------------------------------------------------------------------
function CoordinateGrid({ imgW, imgH, scale, spacing }: {
imgW: number; imgH: number; scale: number; spacing: number
}) {
const lines: JSX.Element[] = []
for (let x = 0; x <= imgW; x += spacing) {
const px = x * scale
lines.push(
<div key={`v${x}`} className="absolute top-0 bottom-0 pointer-events-none" style={{ left: `${px}px`, width: '1px', background: 'rgba(0,150,255,0.2)' }}>
<span className="absolute top-0 left-1 text-[8px] text-blue-400 font-mono">{x}</span>
</div>
)
}
for (let y = 0; y <= imgH; y += spacing) {
const px = y * scale
lines.push(
<div key={`h${y}`} className="absolute left-0 right-0 pointer-events-none" style={{ top: `${px}px`, height: '1px', background: 'rgba(0,150,255,0.2)' }}>
<span className="absolute left-1 top-0.5 text-[8px] text-blue-400 font-mono">{y}</span>
</div>
)
}
return <>{lines}</>
}