feat: Etiketten-Seitenlayout auf dem A4-Bogen frei waehlbar

- LabelTemplate bekommt columns/rows (optional, leer = automatisch passend), plus konfigurierbare Raender/Abstaende - damit ein Etikett exakt auf das vorgedruckte Raster eines physischen Etikettenbogens (z.B. Avery) gelegt werden kann statt nur automatisch berechnet - Startposition beim Drucken waehlbar, fuer bereits angebrochene Boegen (erste Seite startet ab der gewaehlten Position, Folgeseiten wieder von vorne)
feat: Etiketten-Editor erheblich verbessert - Import/Export, Zoom, Duplizieren
2026-09-01 19:43:01 +02:00 · 2026-09-01 19:21:24 +02:00
13 changed files with 588 additions and 54 deletions
@@ -0,0 +1,9 @@
+-- Explicit A4 sheet layout per LabelTemplate: columns/rows (nullable, null =
+-- auto-fit) plus configurable page margins and gaps, so a template can be
+-- made to match a specific physical label sheet's exact printed grid.
+ALTER TABLE "LabelTemplate" ADD COLUMN "columns" INTEGER;
+ALTER TABLE "LabelTemplate" ADD COLUMN "rows" INTEGER;
+ALTER TABLE "LabelTemplate" ADD COLUMN "marginTopMm" DOUBLE PRECISION NOT NULL DEFAULT 5;
+ALTER TABLE "LabelTemplate" ADD COLUMN "marginLeftMm" DOUBLE PRECISION NOT NULL DEFAULT 5;
+ALTER TABLE "LabelTemplate" ADD COLUMN "gapXMm" DOUBLE PRECISION NOT NULL DEFAULT 2;
+ALTER TABLE "LabelTemplate" ADD COLUMN "gapYMm" DOUBLE PRECISION NOT NULL DEFAULT 2;
@@ -864,6 +864,17 @@ model LabelTemplate {
  elements  Json     @default("[]")
  widthMm   Float    @default(90)
  heightMm  Float    @default(35)
+  // A4 sheet layout. columns/rows are nullable: null means "auto-fit as many
+  // as fit" (the original behaviour); a real label sheet product (e.g. a
+  // specific Avery SKU) publishes an exact columns/rows/margin/gap grid, so
+  // setting these lets a template's printed positions match the physical,
+  // pre-die-cut sheet instead of just whatever the naive fit computes.
+  columns      Int?
+  rows         Int?
+  marginTopMm  Float @default(5)
+  marginLeftMm Float @default(5)
+  gapXMm       Float @default(2)
+  gapYMm       Float @default(2)
  isDefault Boolean  @default(false)
  active    Boolean  @default(true)
  createdAt DateTime @default(now())
@@ -4,6 +4,7 @@ import {
  ArrayMaxSize,
  IsArray,
  IsBoolean,
+  IsInt,
  IsNumber,
  IsOptional,
  IsString,
@@ -36,6 +37,47 @@ export class CreateLabelTemplateDto {
  @Min(10)
  heightMm?: number;

+  @ApiPropertyOptional({
+    description:
+      'Spalten pro A4-Bogen. Leer = automatisch so viele wie passen.',
+  })
+  @IsOptional()
+  @IsInt()
+  @Min(1)
+  columns?: number;
+
+  @ApiPropertyOptional({
+    description: 'Zeilen pro A4-Bogen. Leer = automatisch so viele wie passen.',
+  })
+  @IsOptional()
+  @IsInt()
+  @Min(1)
+  rows?: number;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  marginTopMm?: number;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  marginLeftMm?: number;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  gapXMm?: number;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsNumber()
+  @Min(0)
+  gapYMm?: number;
+
  @ApiPropertyOptional()
  @IsOptional()
  @IsBoolean()
@@ -4,8 +4,10 @@ import {
  Delete,
  Get,
  Param,
+  ParseIntPipe,
  Patch,
  Post,
+  Query,
  Res,
 } from '@nestjs/common';
 import { ApiBearerAuth, ApiTags } from '@nestjs/swagger';
@@ -65,11 +67,14 @@ export class LabelTemplatesController {
  async print(
    @Param('id') id: string,
    @Param('bottlingBatchId') bottlingBatchId: string,
+    @Query('startPosition', new ParseIntPipe({ optional: true }))
+    startPosition: number | undefined,
    @Res() res: Response,
  ): Promise<void> {
    const pdf = await this.labelTemplatesService.renderLabelsPdf(
      id,
      bottlingBatchId,
+      startPosition,
    );
    res.setHeader('Content-Type', 'application/pdf');
    res.setHeader(
@@ -64,6 +64,12 @@ describe('LabelTemplatesService', () => {
    elements,
    widthMm: 90,
    heightMm: 35,
+    columns: null,
+    rows: null,
+    marginTopMm: 5,
+    marginLeftMm: 5,
+    gapXMm: 2,
+    gapYMm: 2,
    isDefault: false,
    active: true,
  };
@@ -213,5 +219,56 @@ describe('LabelTemplatesService', () => {
      // A PDF with an embedded raster image contains an XObject /Image entry.
      expect(pdf.toString('latin1')).toContain('/Image');
    });
+
+    function countPages(pdf: Buffer): number {
+      const matches = pdf.toString('latin1').match(/\/Type\s*\/Page[^s]/g);
+      return matches ? matches.length : 0;
+    }
+
+    it('uses an explicit columns/rows override instead of auto-fitting', async () => {
+      prisma.labelTemplate.findUnique.mockResolvedValue({
+        ...template,
+        columns: 1,
+        rows: 1,
+      });
+      prisma.bottlingBatch.findUnique.mockResolvedValue({
+        id: 'batch-1',
+        jarSize: 500,
+        jarCount: 3,
+        lotNumber: 'L-001',
+        date: new Date('2026-06-01T00:00:00.000Z'),
+        bestBeforeDate: new Date('2028-06-01T00:00:00.000Z'),
+        honeyBatch: { batchNumber: 'HB-001', honeyType: 'Bluetenhonig' },
+        product: { name: 'Glas 500g' },
+      });
+
+      const pdf = await service.renderLabelsPdf('template-1', 'batch-1');
+
+      expect(countPages(pdf)).toBe(3);
+    });
+
+    it('skips already-used slots on the first sheet via startPosition, but not later sheets', async () => {
+      prisma.labelTemplate.findUnique.mockResolvedValue({
+        ...template,
+        columns: 2,
+        rows: 1,
+      });
+      prisma.bottlingBatch.findUnique.mockResolvedValue({
+        id: 'batch-1',
+        jarSize: 500,
+        jarCount: 3,
+        lotNumber: 'L-001',
+        date: new Date('2026-06-01T00:00:00.000Z'),
+        bestBeforeDate: new Date('2028-06-01T00:00:00.000Z'),
+        honeyBatch: { batchNumber: 'HB-001', honeyType: 'Bluetenhonig' },
+        product: { name: 'Glas 500g' },
+      });
+
+      const pdf = await service.renderLabelsPdf('template-1', 'batch-1', 2);
+
+      // perPage=2, skip=1: label 1 fills the remaining slot on page 1,
+      // labels 2-3 fill both slots of page 2.
+      expect(countPages(pdf)).toBe(2);
+    });
  });
 });
@@ -13,12 +13,21 @@ import {
 } from './label-element.types';

 const MM_TO_PT = 72 / 25.4;
-const PAGE_MARGIN_MM = 5;
-const LABEL_GAP_MM = 2;
 const A4_WIDTH_MM = 210;
 const A4_HEIGHT_MM = 297;
 const QR_SOURCE_SIZE_PX = 400;

+interface SheetLayout {
+  widthMm: number;
+  heightMm: number;
+  columns: number | null;
+  rows: number | null;
+  marginTopMm: number;
+  marginLeftMm: number;
+  gapXMm: number;
+  gapYMm: number;
+}
+
 function formatDate(date: Date): string {
  return date.toLocaleDateString('de-DE');
 }
@@ -151,6 +160,7 @@ export class LabelTemplatesService {
  async renderLabelsPdf(
    templateId: string,
    bottlingBatchId: string,
+    startPosition = 1,
  ): Promise<Buffer> {
    const template = await this.findById(templateId);
    const bottlingBatch = await this.prisma.bottlingBatch.findUnique({
@@ -193,19 +203,28 @@ export class LabelTemplatesService {

    return this.renderPdf(
      elements,
-      template.widthMm,
-      template.heightMm,
+      {
+        widthMm: template.widthMm,
+        heightMm: template.heightMm,
+        columns: template.columns,
+        rows: template.rows,
+        marginTopMm: template.marginTopMm,
+        marginLeftMm: template.marginLeftMm,
+        gapXMm: template.gapXMm,
+        gapYMm: template.gapYMm,
+      },
      bottlingBatch.jarCount,
      qrCodeBuffer,
+      startPosition,
    );
  }

  private renderPdf(
    elements: LabelElement[],
-    widthMm: number,
-    heightMm: number,
+    layout: SheetLayout,
    copies: number,
    qrCodeBuffer: Buffer | null,
+    startPosition: number,
  ): Promise<Buffer> {
    return new Promise((resolve, reject) => {
      const doc = new PDFDocument({ size: 'A4', margin: 0 });
@@ -214,27 +233,34 @@ export class LabelTemplatesService {
      doc.on('end', () => resolve(Buffer.concat(chunks)));
      doc.on('error', (error: Error) => reject(error));

-      const usableWidthMm = A4_WIDTH_MM - 2 * PAGE_MARGIN_MM;
-      const usableHeightMm = A4_HEIGHT_MM - 2 * PAGE_MARGIN_MM;
-      const columns = Math.max(
-        1,
-        Math.floor((usableWidthMm + LABEL_GAP_MM) / (widthMm + LABEL_GAP_MM)),
-      );
-      const rows = Math.max(
-        1,
-        Math.floor((usableHeightMm + LABEL_GAP_MM) / (heightMm + LABEL_GAP_MM)),
-      );
+      const { widthMm, heightMm, marginTopMm, marginLeftMm, gapXMm, gapYMm } =
+        layout;
+      const usableWidthMm = A4_WIDTH_MM - 2 * marginLeftMm;
+      const usableHeightMm = A4_HEIGHT_MM - 2 * marginTopMm;
+      const columns =
+        layout.columns ??
+        Math.max(1, Math.floor((usableWidthMm + gapXMm) / (widthMm + gapXMm)));
+      const rows =
+        layout.rows ??
+        Math.max(
+          1,
+          Math.floor((usableHeightMm + gapYMm) / (heightMm + gapYMm)),
+        );
      const perPage = columns * rows;
+      // startPosition only skips ahead on the first sheet (partially-used
+      // physical sheet, e.g. a few labels already peeled off) - every sheet
+      // after that always starts fresh at the top-left slot.
+      const skip = Math.min(Math.max(0, startPosition - 1), perPage - 1);

      for (let index = 0; index < copies; index += 1) {
-        const onPage = index % perPage;
-        if (index > 0 && onPage === 0) {
+        const slotOnPage = (skip + index) % perPage;
+        if (index > 0 && slotOnPage === 0) {
          doc.addPage({ size: 'A4', margin: 0 });
        }
-        const column = onPage % columns;
-        const row = Math.floor(onPage / columns);
-        const xMm = PAGE_MARGIN_MM + column * (widthMm + LABEL_GAP_MM);
-        const yMm = PAGE_MARGIN_MM + row * (heightMm + LABEL_GAP_MM);
+        const column = slotOnPage % columns;
+        const row = Math.floor(slotOnPage / columns);
+        const xMm = marginLeftMm + column * (widthMm + gapXMm);
+        const yMm = marginTopMm + row * (heightMm + gapYMm);
        const originX = xMm * MM_TO_PT;
        const originY = yMm * MM_TO_PT;
        const w = widthMm * MM_TO_PT;
@@ -7,6 +7,8 @@ import { toast } from "sonner";
 import { fetchLabelTemplates, printLabels } from "@/lib/label-templates/api";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
 import {
  Select,
  SelectContent,
@@ -17,6 +19,7 @@ import {

 export function PrintLabelsCard({ bottlingBatchId }: { bottlingBatchId: string }) {
  const [templateId, setTemplateId] = useState("");
+  const [startPosition, setStartPosition] = useState(1);
  const { data: templates } = useQuery({
    queryKey: ["label-templates"],
    queryFn: fetchLabelTemplates,
@@ -28,9 +31,13 @@ export function PrintLabelsCard({ bottlingBatchId }: { bottlingBatchId: string }
  const selectedTemplate = activeTemplates.find(
    (template) => template.id === effectiveTemplateId,
  );
+  const slotsPerSheet =
+    selectedTemplate?.columns && selectedTemplate?.rows
+      ? selectedTemplate.columns * selectedTemplate.rows
+      : undefined;

  const mutation = useMutation({
-    mutationFn: () => printLabels(effectiveTemplateId, bottlingBatchId),
+    mutationFn: () => printLabels(effectiveTemplateId, bottlingBatchId, startPosition),
    onError: () => toast.error("Etiketten konnten nicht erstellt werden"),
  });

@@ -65,6 +72,23 @@ export function PrintLabelsCard({ bottlingBatchId }: { bottlingBatchId: string }
                ))}
              </SelectContent>
            </Select>
+            <div className="flex flex-col gap-2">
+              <Label htmlFor="print-start-position">
+                Startposition auf dem Bogen (1 = oben links)
+              </Label>
+              <Input
+                id="print-start-position"
+                type="number"
+                inputMode="numeric"
+                min={1}
+                max={slotsPerSheet}
+                value={startPosition}
+                onChange={(event) => setStartPosition(Math.max(1, Number(event.target.value)))}
+              />
+              <p className="text-xs text-muted-foreground">
+                Für bereits angebrochene Bögen: Position der ersten noch freien Etikette.
+              </p>
+            </div>
            <Button
              type="button"
              disabled={!effectiveTemplateId || mutation.isPending}
@@ -40,6 +40,12 @@ export default function EditLabelTemplatePage() {
            elements: template.elements,
            widthMm: template.widthMm,
            heightMm: template.heightMm,
+            columns: template.columns,
+            rows: template.rows,
+            marginTopMm: template.marginTopMm,
+            marginLeftMm: template.marginLeftMm,
+            gapXMm: template.gapXMm,
+            gapYMm: template.gapYMm,
            isDefault: template.isDefault,
          }}
          onSubmit={handleSubmit}
@@ -1,6 +1,6 @@
 "use client";

-import { Bold, Italic, Trash2 } from "lucide-react";
+import { Bold, Copy, Italic, Trash2 } from "lucide-react";
 import {
  LabelElement,
  LabelFontFamily,
@@ -36,12 +36,14 @@ interface ElementPropertiesPanelProps {
  element: LabelElement;
  onChange: (patch: Partial<LabelElement>) => void;
  onDelete: () => void;
+  onDuplicate: () => void;
 }

 export function ElementPropertiesPanel({
  element,
  onChange,
  onDelete,
+  onDuplicate,
 }: ElementPropertiesPanelProps) {
  return (
    <div className="flex flex-col gap-4">
@@ -49,9 +51,37 @@ export function ElementPropertiesPanel({
        <p className="text-sm font-medium text-muted-foreground">
          {element.type === "text" ? "Text" : element.type === "qrCode" ? "QR-Code" : element.type === "image" ? "Bild" : "Linie"}
        </p>
-        <Button type="button" variant="ghost" size="icon-sm" onClick={onDelete}>
-          <Trash2 className="size-3.5 text-destructive" />
-        </Button>
+        <div className="flex gap-1">
+          <Button type="button" variant="ghost" size="icon-sm" onClick={onDuplicate} title="Duplizieren">
+            <Copy className="size-3.5" />
+          </Button>
+          <Button type="button" variant="ghost" size="icon-sm" onClick={onDelete} title="Löschen">
+            <Trash2 className="size-3.5 text-destructive" />
+          </Button>
+        </div>
+      </div>
+
+      <div className="flex gap-3">
+        <div className="flex flex-1 flex-col gap-2">
+          <Label htmlFor="element-x">X (mm)</Label>
+          <Input
+            id="element-x"
+            type="number"
+            inputMode="decimal"
+            value={element.x}
+            onChange={(event) => onChange({ x: Number(event.target.value) })}
+          />
+        </div>
+        <div className="flex flex-1 flex-col gap-2">
+          <Label htmlFor="element-y">Y (mm)</Label>
+          <Input
+            id="element-y"
+            type="number"
+            inputMode="decimal"
+            value={element.y}
+            onChange={(event) => onChange({ y: Number(event.target.value) })}
+          />
+        </div>
      </div>

      {element.type === "text" ? <TextFields element={element} onChange={onChange} /> : null}
@@ -8,7 +8,7 @@ import {
 } from "@/lib/label-templates/types";
 import { cn } from "@/lib/utils";

-export const CANVAS_SCALE = 4; // px per mm
+export const BASE_SCALE = 4; // px per mm at 100% zoom
 const PT_TO_MM = 25.4 / 72;
 const MIN_SIZE_MM = 5;

@@ -27,6 +27,7 @@ interface LabelCanvasProps {
  heightMm: number;
  elements: LabelElement[];
  selectedId: string | null;
+  zoom?: number;
  onSelect: (id: string | null) => void;
  onChangeElement: (id: string, patch: Partial<LabelElement>) => void;
 }
@@ -36,9 +37,12 @@ export function LabelCanvas({
  heightMm,
  elements,
  selectedId,
+  zoom = 1,
  onSelect,
  onChangeElement,
 }: LabelCanvasProps) {
+  const scale = BASE_SCALE * zoom;
+
  function startDrag(
    event: ReactPointerEvent,
    element: LabelElement,
@@ -52,8 +56,8 @@ export function LabelCanvas({
    const origin = element;

    function onMove(moveEvent: PointerEvent) {
-      const dxMm = (moveEvent.clientX - startX) / CANVAS_SCALE;
-      const dyMm = (moveEvent.clientY - startY) / CANVAS_SCALE;
+      const dxMm = (moveEvent.clientX - startX) / scale;
+      const dyMm = (moveEvent.clientY - startY) / scale;

      if (mode === "move") {
        onChangeElement(origin.id, {
@@ -92,13 +96,14 @@ export function LabelCanvas({
  return (
    <div
      className="relative overflow-hidden rounded-lg border border-dashed border-border bg-white shadow-sm"
-      style={{ width: widthMm * CANVAS_SCALE, height: heightMm * CANVAS_SCALE }}
+      style={{ width: widthMm * scale, height: heightMm * scale }}
      onPointerDown={() => onSelect(null)}
    >
      {elements.map((element) => (
        <ElementBox
          key={element.id}
          element={element}
+          scale={scale}
          selected={element.id === selectedId}
          onStartMove={(event) => startDrag(event, element, "move")}
          onStartResize={(event) => startDrag(event, element, "resize")}
@@ -110,16 +115,18 @@ export function LabelCanvas({

 function ElementBox({
  element,
+  scale,
  selected,
  onStartMove,
  onStartResize,
 }: {
  element: LabelElement;
+  scale: number;
  selected: boolean;
  onStartMove: (event: ReactPointerEvent) => void;
  onStartResize: (event: ReactPointerEvent) => void;
 }) {
-  const box = boxFor(element);
+  const box = boxFor(element, scale);

  return (
    <div
@@ -135,7 +142,7 @@ function ElementBox({
      }}
      onPointerDown={onStartMove}
    >
-      {renderContent(element)}
+      {renderContent(element, scale)}
      {selected ? (
        <div
          className="absolute right-0 bottom-0 size-3 translate-x-1/2 translate-y-1/2 cursor-nwse-resize rounded-full border-2 border-primary bg-background"
@@ -149,27 +156,30 @@ function ElementBox({
  );
 }

-function boxFor(element: LabelElement): {
+function boxFor(
+  element: LabelElement,
+  scale: number,
+): {
  left: number;
  top: number;
  width: number;
  height: number;
 } {
-  const left = element.x * CANVAS_SCALE;
-  const top = element.y * CANVAS_SCALE;
+  const left = element.x * scale;
+  const top = element.y * scale;
  if (element.type === "qrCode") {
-    return { left, top, width: element.size * CANVAS_SCALE, height: element.size * CANVAS_SCALE };
+    return { left, top, width: element.size * scale, height: element.size * scale };
  }
  if (element.type === "line") {
-    const thicknessPx = Math.max(2, element.thickness * PT_TO_MM * CANVAS_SCALE);
+    const thicknessPx = Math.max(2, element.thickness * PT_TO_MM * scale);
    return element.orientation === "horizontal"
-      ? { left, top: top - thicknessPx / 2, width: element.length * CANVAS_SCALE, height: thicknessPx }
-      : { left: left - thicknessPx / 2, top, width: thicknessPx, height: element.length * CANVAS_SCALE };
+      ? { left, top: top - thicknessPx / 2, width: element.length * scale, height: thicknessPx }
+      : { left: left - thicknessPx / 2, top, width: thicknessPx, height: element.length * scale };
  }
-  return { left, top, width: element.width * CANVAS_SCALE, height: element.height * CANVAS_SCALE };
+  return { left, top, width: element.width * scale, height: element.height * scale };
 }

-function renderContent(element: LabelElement) {
+function renderContent(element: LabelElement, scale: number) {
  switch (element.type) {
    case "text": {
      const display = element.placeholderKey
@@ -180,7 +190,7 @@ function renderContent(element: LabelElement) {
          className="size-full overflow-hidden whitespace-pre-wrap"
          style={{
            fontFamily: FONT_CSS[element.fontFamily],
-            fontSize: element.fontSize * PT_TO_MM * CANVAS_SCALE,
+            fontSize: element.fontSize * PT_TO_MM * scale,
            fontWeight: element.bold ? 700 : 400,
            fontStyle: element.italic ? "italic" : "normal",
            color: element.color,
@@ -1,8 +1,17 @@
 "use client";

-import { ChangeEvent, useState } from "react";
+import { ChangeEvent, useEffect, useState } from "react";
 import { useRouter } from "next/navigation";
-import { Image as ImageIcon, Minus, QrCode, Type } from "lucide-react";
+import {
+  Download,
+  Image as ImageIcon,
+  Minus,
+  QrCode,
+  Type,
+  Upload,
+  ZoomIn,
+  ZoomOut,
+} from "lucide-react";
 import { toast } from "sonner";
 import {
  LabelElement,
@@ -25,6 +34,17 @@ import {
 import { LabelCanvas } from "./label-canvas";
 import { ElementPropertiesPanel } from "./element-properties-panel";

+const ELEMENT_TYPES = ["text", "qrCode", "image", "line"] as const;
+const ZOOM_STEPS: number[] = [0.5, 0.75, 1, 1.25, 1.5, 2];
+const ZOOM_MIN = ZOOM_STEPS[0];
+const ZOOM_MAX = ZOOM_STEPS[ZOOM_STEPS.length - 1];
+
+function nextZoomStep(current: number, direction: 1 | -1): number {
+  const index = ZOOM_STEPS.indexOf(current);
+  const nextIndex = Math.min(Math.max(index + direction, 0), ZOOM_STEPS.length - 1);
+  return ZOOM_STEPS[nextIndex];
+}
+
 function newId(): string {
  return crypto.randomUUID();
 }
@@ -54,9 +74,44 @@ export interface LabelDesignerValue {
  elements: LabelElement[];
  widthMm: number;
  heightMm: number;
+  columns: number | null;
+  rows: number | null;
+  marginTopMm: number;
+  marginLeftMm: number;
+  gapXMm: number;
+  gapYMm: number;
  isDefault: boolean;
 }

+// Loose runtime check for imported JSON (own export, or hand/AI-authored) -
+// only verifies the shape is plausible enough to load into the canvas;
+// the backend's own DTO validation is still the real boundary check on save.
+function isLabelElementArray(value: unknown): value is LabelElement[] {
+  return (
+    Array.isArray(value) &&
+    value.every(
+      (item) =>
+        typeof item === "object" &&
+        item !== null &&
+        "id" in item &&
+        "type" in item &&
+        "x" in item &&
+        "y" in item &&
+        ELEMENT_TYPES.includes((item as { type: unknown }).type as (typeof ELEMENT_TYPES)[number]),
+    )
+  );
+}
+
+function slugify(name: string): string {
+  return (
+    name
+      .trim()
+      .toLowerCase()
+      .replace(/[^a-z0-9]+/g, "-")
+      .replace(/(^-|-$)/g, "") || "etikett"
+  );
+}
+
 interface LabelDesignerProps {
  initial?: LabelDesignerValue;
  onSubmit: (value: LabelDesignerValue) => Promise<void>;
@@ -68,10 +123,17 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
  const [name, setName] = useState(initial?.name ?? "");
  const [widthMm, setWidthMm] = useState(initial?.widthMm ?? 90);
  const [heightMm, setHeightMm] = useState(initial?.heightMm ?? 35);
+  const [columns, setColumns] = useState<number | null>(initial?.columns ?? null);
+  const [rows, setRows] = useState<number | null>(initial?.rows ?? null);
+  const [marginTopMm, setMarginTopMm] = useState(initial?.marginTopMm ?? 5);
+  const [marginLeftMm, setMarginLeftMm] = useState(initial?.marginLeftMm ?? 5);
+  const [gapXMm, setGapXMm] = useState(initial?.gapXMm ?? 2);
+  const [gapYMm, setGapYMm] = useState(initial?.gapYMm ?? 2);
  const [isDefault, setIsDefault] = useState(initial?.isDefault ?? false);
  const [elements, setElements] = useState<LabelElement[]>(initial?.elements ?? []);
  const [selectedId, setSelectedId] = useState<string | null>(null);
  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [zoom, setZoom] = useState(1);

  const selectedElement = elements.find((element) => element.id === selectedId) ?? null;

@@ -88,12 +150,34 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
    );
  }

-  function deleteSelected() {
-    if (!selectedId) return;
-    setElements((current) => current.filter((element) => element.id !== selectedId));
-    setSelectedId(null);
+  function deleteElement(id: string) {
+    setElements((current) => current.filter((element) => element.id !== id));
+    setSelectedId((current) => (current === id ? null : current));
  }

+  function duplicateElement(id: string) {
+    const source = elements.find((element) => element.id === id);
+    if (!source) return;
+    const copy = { ...source, id: newId(), x: source.x + 4, y: source.y + 4 };
+    addElement(copy);
+  }
+
+  // Delete/Backspace removes the selected element, but never while the user
+  // is typing in a text field - only when focus is on the canvas itself.
+  useEffect(() => {
+    function onKeyDown(event: KeyboardEvent) {
+      if (event.key !== "Delete" && event.key !== "Backspace") return;
+      const target = event.target as HTMLElement | null;
+      if (target && ["INPUT", "TEXTAREA", "SELECT"].includes(target.tagName)) return;
+      if (selectedId) {
+        event.preventDefault();
+        deleteElement(selectedId);
+      }
+    }
+    window.addEventListener("keydown", onKeyDown);
+    return () => window.removeEventListener("keydown", onKeyDown);
+  }, [selectedId, elements]);
+
  function handlePlaceholderInsert(key: PlaceholderKey) {
    addElement(newTextElement({ placeholderKey: key, text: "" }));
  }
@@ -117,6 +201,66 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
    reader.readAsDataURL(file);
  }

+  function handleExport() {
+    const payload: LabelDesignerValue = {
+      name,
+      elements,
+      widthMm,
+      heightMm,
+      columns,
+      rows,
+      marginTopMm,
+      marginLeftMm,
+      gapXMm,
+      gapYMm,
+      isDefault,
+    };
+    const blob = new Blob([JSON.stringify(payload, null, 2)], { type: "application/json" });
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement("a");
+    link.href = url;
+    link.download = `${slugify(name)}.json`;
+    link.click();
+    URL.revokeObjectURL(url);
+  }
+
+  function handleImportFile(event: ChangeEvent<HTMLInputElement>) {
+    const file = event.target.files?.[0];
+    event.target.value = "";
+    if (!file) return;
+    const reader = new FileReader();
+    reader.onload = () => {
+      try {
+        const parsed: unknown = JSON.parse(String(reader.result));
+        const importedElements = Array.isArray(parsed)
+          ? parsed
+          : (parsed as { elements?: unknown })?.elements;
+        if (!isLabelElementArray(importedElements)) {
+          toast.error("Datei enthält keine gültige Etikettenvorlage.");
+          return;
+        }
+        setElements(importedElements.map((element) => ({ ...element, id: newId() })));
+        if (!Array.isArray(parsed)) {
+          const value = parsed as Partial<LabelDesignerValue>;
+          if (typeof value.name === "string" && value.name && !name) setName(value.name);
+          if (typeof value.widthMm === "number") setWidthMm(value.widthMm);
+          if (typeof value.heightMm === "number") setHeightMm(value.heightMm);
+          if (typeof value.columns === "number" || value.columns === null) setColumns(value.columns);
+          if (typeof value.rows === "number" || value.rows === null) setRows(value.rows);
+          if (typeof value.marginTopMm === "number") setMarginTopMm(value.marginTopMm);
+          if (typeof value.marginLeftMm === "number") setMarginLeftMm(value.marginLeftMm);
+          if (typeof value.gapXMm === "number") setGapXMm(value.gapXMm);
+          if (typeof value.gapYMm === "number") setGapYMm(value.gapYMm);
+        }
+        setSelectedId(null);
+        toast.success("Vorlage importiert.");
+      } catch {
+        toast.error("Datei konnte nicht gelesen werden - ist es gültiges JSON?");
+      }
+    };
+    reader.readAsText(file);
+  }
+
  async function handleSubmit() {
    if (!name.trim()) {
      toast.error("Bitte einen Namen für die Vorlage angeben.");
@@ -124,7 +268,19 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
    }
    setIsSubmitting(true);
    try {
-      await onSubmit({ name, elements, widthMm, heightMm, isDefault });
+      await onSubmit({
+        name,
+        elements,
+        widthMm,
+        heightMm,
+        columns,
+        rows,
+        marginTopMm,
+        marginLeftMm,
+        gapXMm,
+        gapYMm,
+        isDefault,
+      });
      router.push("/settings/label-templates");
    } catch {
      toast.error("Vorlage konnte nicht gespeichert werden.");
@@ -186,7 +342,115 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP

        <Card>
          <CardHeader>
+            <CardTitle className="text-base">Seiten-Layout (A4)</CardTitle>
+          </CardHeader>
+          <CardContent className="flex flex-col gap-4">
+            <p className="text-xs text-muted-foreground">
+              Spalten/Zeilen leer lassen, um automatisch so viele einzuplanen wie passen. Feste
+              Werte eintragen, um exakt zum vorgedruckten Raster eines Etikettenbogens (z.B.
+              Avery-Vorlage) zu passen.
+            </p>
+            <div className="flex gap-3">
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-columns">Spalten</Label>
+                <Input
+                  id="designer-columns"
+                  type="number"
+                  inputMode="numeric"
+                  placeholder="Auto"
+                  value={columns ?? ""}
+                  onChange={(event) =>
+                    setColumns(event.target.value === "" ? null : Number(event.target.value))
+                  }
+                />
+              </div>
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-rows">Zeilen</Label>
+                <Input
+                  id="designer-rows"
+                  type="number"
+                  inputMode="numeric"
+                  placeholder="Auto"
+                  value={rows ?? ""}
+                  onChange={(event) =>
+                    setRows(event.target.value === "" ? null : Number(event.target.value))
+                  }
+                />
+              </div>
+            </div>
+            <div className="flex gap-3">
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-margin-top">Rand oben (mm)</Label>
+                <Input
+                  id="designer-margin-top"
+                  type="number"
+                  inputMode="decimal"
+                  value={marginTopMm}
+                  onChange={(event) => setMarginTopMm(Number(event.target.value))}
+                />
+              </div>
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-margin-left">Rand links (mm)</Label>
+                <Input
+                  id="designer-margin-left"
+                  type="number"
+                  inputMode="decimal"
+                  value={marginLeftMm}
+                  onChange={(event) => setMarginLeftMm(Number(event.target.value))}
+                />
+              </div>
+            </div>
+            <div className="flex gap-3">
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-gap-x">Abstand horizontal (mm)</Label>
+                <Input
+                  id="designer-gap-x"
+                  type="number"
+                  inputMode="decimal"
+                  value={gapXMm}
+                  onChange={(event) => setGapXMm(Number(event.target.value))}
+                />
+              </div>
+              <div className="flex flex-1 flex-col gap-2">
+                <Label htmlFor="designer-gap-y">Abstand vertikal (mm)</Label>
+                <Input
+                  id="designer-gap-y"
+                  type="number"
+                  inputMode="decimal"
+                  value={gapYMm}
+                  onChange={(event) => setGapYMm(Number(event.target.value))}
+                />
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader className="flex flex-row items-center justify-between gap-2">
            <CardTitle className="text-base">Elemente</CardTitle>
+            <div className="flex items-center gap-1">
+              <Button
+                type="button"
+                variant="ghost"
+                size="sm"
+                render={
+                  <label className="cursor-pointer">
+                    <Upload className="size-4" />
+                    Importieren
+                    <input
+                      type="file"
+                      accept="application/json"
+                      className="hidden"
+                      onChange={handleImportFile}
+                    />
+                  </label>
+                }
+              />
+              <Button type="button" variant="ghost" size="sm" onClick={handleExport}>
+                <Download className="size-4" />
+                Exportieren
+              </Button>
+            </div>
          </CardHeader>
          <CardContent className="flex flex-wrap items-center gap-2">
            <Button
@@ -251,12 +515,37 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
          </CardContent>
        </Card>

+        <div className="flex items-center gap-2">
+          <Button
+            type="button"
+            variant="outline"
+            size="icon-sm"
+            disabled={zoom <= ZOOM_MIN}
+            onClick={() => setZoom((current) => nextZoomStep(current, -1))}
+          >
+            <ZoomOut className="size-3.5" />
+          </Button>
+          <span className="w-12 text-center text-sm text-muted-foreground">
+            {Math.round(zoom * 100)}%
+          </span>
+          <Button
+            type="button"
+            variant="outline"
+            size="icon-sm"
+            disabled={zoom >= ZOOM_MAX}
+            onClick={() => setZoom((current) => nextZoomStep(current, 1))}
+          >
+            <ZoomIn className="size-3.5" />
+          </Button>
+        </div>
+
        <div className="overflow-auto rounded-lg bg-muted/30 p-6">
          <LabelCanvas
            widthMm={widthMm}
            heightMm={heightMm}
            elements={elements}
            selectedId={selectedId}
+            zoom={zoom}
            onSelect={setSelectedId}
            onChangeElement={changeElement}
          />
@@ -276,11 +565,13 @@ export function LabelDesigner({ initial, onSubmit, submitLabel }: LabelDesignerP
            <ElementPropertiesPanel
              element={selectedElement}
              onChange={(patch) => changeElement(selectedElement.id, patch)}
-              onDelete={deleteSelected}
+              onDelete={() => deleteElement(selectedElement.id)}
+              onDuplicate={() => duplicateElement(selectedElement.id)}
            />
          ) : (
            <p className="text-sm text-muted-foreground">
-              Element im Etikett anklicken, um es zu bearbeiten.
+              Element im Etikett anklicken, um es zu bearbeiten. Entf/Backspace löscht das
+              ausgewählte Element.
            </p>
          )}
        </CardContent>
@@ -27,9 +27,14 @@ export function deactivateLabelTemplate(id: string): Promise<LabelTemplate> {
  return apiFetch<LabelTemplate>(`/label-templates/${id}`, { method: "DELETE" });
 }

-export async function printLabels(templateId: string, bottlingBatchId: string): Promise<void> {
+export async function printLabels(
+  templateId: string,
+  bottlingBatchId: string,
+  startPosition?: number,
+): Promise<void> {
+  const query = startPosition && startPosition > 1 ? `?startPosition=${startPosition}` : "";
  const { blob, filename } = await apiFetchBlob(
-    `/label-templates/${templateId}/print/${bottlingBatchId}`,
+    `/label-templates/${templateId}/print/${bottlingBatchId}${query}`,
    "etiketten.pdf",
  );
  downloadBlob(blob, filename);
@@ -75,6 +75,12 @@ export interface LabelTemplate {
  elements: LabelElement[];
  widthMm: number;
  heightMm: number;
+  columns: number | null;
+  rows: number | null;
+  marginTopMm: number;
+  marginLeftMm: number;
+  gapXMm: number;
+  gapYMm: number;
  isDefault: boolean;
  active: boolean;
  createdAt: string;
@@ -86,6 +92,12 @@ export interface CreateLabelTemplateInput {
  elements: LabelElement[];
  widthMm?: number;
  heightMm?: number;
+  columns?: number | null;
+  rows?: number | null;
+  marginTopMm?: number;
+  marginLeftMm?: number;
+  gapXMm?: number;
+  gapYMm?: number;
  isDefault?: boolean;
 }

@@ -94,5 +106,11 @@ export interface UpdateLabelTemplateInput {
  elements?: LabelElement[];
  widthMm?: number;
  heightMm?: number;
+  columns?: number | null;
+  rows?: number | null;
+  marginTopMm?: number;
+  marginLeftMm?: number;
+  gapXMm?: number;
+  gapYMm?: number;
  isDefault?: boolean;
 }