FloriDevs.github.io/rahmen.html at main · FloriDevs/FloriDevs.github.io · GitHub

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<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PDF Rand Generator (Querformat)</title>
    <script src="https://unpkg.com/pdf-lib@1.17.1/dist/pdf-lib.min.js"></script>
    <style>
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f4f4f4;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
        }
        .container {
            background: white;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            text-align: center;
            max-width: 600px;
            width: 100%;
        }
        h1 { margin-top: 0; color: #333; }
        p { color: #666; }

        .upload-btn-wrapper {
            position: relative;
            overflow: hidden;
            display: inline-block;
            margin: 20px 0;
        }

        input[type=file] {
            font-size: 100px;
            position: absolute;
            left: 0;
            top: 0;
            opacity: 0;
            cursor: pointer;
        }

        button {
            border: 2px solid #007bff;
            color: white;
            background-color: #007bff;
            padding: 10px 25px;
            border-radius: 5px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: 0.3s;
        }

        button:hover { background-color: #0056b3; border-color: #0056b3; }

        iframe {
            margin-top: 30px;
            width: 100%;
            height: 500px; /* Etwas flacher für Querformat-Ansicht */
            border: 1px solid #ccc;
            display: none;
        }

        .status { margin-top: 10px; font-weight: bold; color: #007bff; min-height: 24px;}
    </style>
</head>
<body>

    <div class="container">
        <h1>PDF Rand (Querformat)</h1>
        <p>
            Format: A4 Quer (Landscape)<br>
            Rand: 31mm | Trennlinie: 16mm
        </p>

        <div class="upload-btn-wrapper">
            <button class="btn">PDF Datei auswählen</button>
            <input type="file" id="fileInput" accept="application/pdf" />
        </div>

        <div class="status" id="statusText"></div>
    </div>

    <iframe id="pdfPreview"></iframe>

    <script>
        const { PDFDocument, rgb } = PDFLib;

        document.getElementById('fileInput').addEventListener('change', async (e) => {
            const file = e.target.files[0];
            if (!file) return;

            const statusText = document.getElementById('statusText');
            statusText.textContent = "Verarbeite PDF (Querformat)...";

            try {
                const arrayBuffer = await file.arrayBuffer();
                const originalPdf = await PDFDocument.load(arrayBuffer);
                const newPdf = await PDFDocument.create();

                const mm = 2.83465;

                // ÄNDERUNG: A4 Maße getauscht für Querformat
                const A4_WIDTH = 297 * mm;  // Breite ist jetzt die lange Seite
                const A4_HEIGHT = 210 * mm; // Höhe ist jetzt die kurze Seite

                const MARGIN_TOTAL = 31 * mm;
                const LINE_POS = 16 * mm;

                const contentMaxWidth = A4_WIDTH - (2 * MARGIN_TOTAL);
                const contentMaxHeight = A4_HEIGHT - (2 * MARGIN_TOTAL);

                const pages = originalPdf.getPages();
                const embeddedPages = await newPdf.embedPages(pages);

                for (let i = 0; i < embeddedPages.length; i++) {
                    const embeddedPage = embeddedPages[i];
                    const originalDims = embeddedPage.scale(1);

                    const page = newPdf.addPage([A4_WIDTH, A4_HEIGHT]);

                    // Rechteck/Linie zeichnen (passt sich an Querformat an)
                    page.drawRectangle({
                        x: LINE_POS,
                        y: LINE_POS,
                        width: A4_WIDTH - (2 * LINE_POS),
                        height: A4_HEIGHT - (2 * LINE_POS),
                        borderColor: rgb(0, 0, 0),
                        borderWidth: 1,
                    });

                    // Inhalt skalieren und zentrieren
                    const scaleX = contentMaxWidth / originalDims.width;
                    const scaleY = contentMaxHeight / originalDims.height;
                    const scale = Math.min(scaleX, scaleY);

                    const centeredX = (A4_WIDTH - (originalDims.width * scale)) / 2;
                    const centeredY = (A4_HEIGHT - (originalDims.height * scale)) / 2;

                    page.drawPage(embeddedPage, {
                        x: centeredX,
                        y: centeredY,
                        width: originalDims.width * scale,
                        height: originalDims.height * scale,
                    });
                }

                const pdfBytes = await newPdf.save();
                const blob = new Blob([pdfBytes], { type: 'application/pdf' });
                const url = URL.createObjectURL(blob);

                const iframe = document.getElementById('pdfPreview');
                iframe.src = url;
                iframe.style.display = 'block';
                statusText.textContent = "Fertig! Siehe Vorschau unten.";

            } catch (err) {
                console.error(err);
                statusText.textContent = "Fehler beim Verarbeiten.";
                alert("Fehler! Bitte überprüfe die Datei.");
            }
        });
    </script>
</body>
</html>