modified: .gitignore

modified:   QUICKSTART.md
	modified:   app.py
	new file:   output/.gitkeep
	modified:   static/css/style.css
	modified:   static/js/images-to-pdf.js
	modified:   templates/images_to_pdf.html
	new file:   uploads/.gitkeep

.gitignore

@@ -160,3 +160,27 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+# PDF Web App specific - Ignore upload and output contents but keep directories
+uploads/*
+!uploads/.gitkeep
+output/*
+!output/.gitkeep
+
+# IDEs
+.vscode/
+.idea/
+
+# OS specific
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Temporary files
+*.tmp
+*.temp
+*.bak
+

QUICKSTART.md

@@ -48,6 +48,10 @@ Die App läuft jetzt lokal auf Ihrem Computer. Sie können:
 - ✅ PDFs zusammenführen  
 - ✅ PDFs zu Bildern konvertieren
 - ✅ Drag & Drop verwenden
+- ✅ **NEU: Bildvorschau mit Rotation** - Bilder anzeigen und drehen
+- ✅ **NEU: Bildorientierung ändern** - 90°, 180°, 270° Rotation
+- ✅ **NEU: Verschiedene Vorschaugrößen** - Klein, Mittel, Groß
+- ✅ **NEU: Bildmodal** - Bilder in voller Größe anzeigen
 - ✅ Vollständig offline arbeiten
 
 ## Bei Problemen:

app.py

@@ -112,9 +112,9 @@ def convert_images_to_pdf():
     """Konvertiert hochgeladene Bilder zu PDF"""
     try:
         data = request.get_json()
-        filenames = data.get('filenames', [])
+        files_data = data.get('files', [])
         
-        if not filenames:
+        if not files_data:
             return jsonify({'error': 'Keine Dateien ausgewählt'}), 400
         
         # PDF erstellen
@@ -125,12 +125,19 @@ def convert_images_to_pdf():
         c = canvas.Canvas(output_path, pagesize=A4)
         page_width, page_height = A4
         
-        for filename in filenames:
+        for file_data in files_data:
+            filename = file_data.get('filename')
+            rotation = file_data.get('rotation', 0)
+            
             file_path = os.path.join(UPLOAD_FOLDER, filename)
             
             if os.path.exists(file_path):
-                # Bild öffnen und Größe anpassen
+                # Bild öffnen und rotieren
                 with Image.open(file_path) as img:
+                    # Bild rotieren falls nötig
+                    if rotation != 0:
+                        img = img.rotate(-rotation, expand=True)  # Negative Rotation für korrekte Richtung
+                    
                     img_width, img_height = img.size
                     
                     # Seitenverhältnis berechnen
@@ -151,8 +158,16 @@ def convert_images_to_pdf():
                     x = (page_width - new_width) / 2
                     y = (page_height - new_height) / 2
                     
-                    # Bild zur PDF hinzufügen
+                    # Temporäres rotiertes Bild speichern
-                    c.drawImage(file_path, x, y, width=new_width, height=new_height)
+                    if rotation != 0:
+                        temp_path = os.path.join(UPLOAD_FOLDER, f"temp_rotated_{filename}")
+                        img.save(temp_path)
+                        c.drawImage(temp_path, x, y, width=new_width, height=new_height)
+                        # Temporäre Datei löschen
+                        os.remove(temp_path)
+                    else:
+                        c.drawImage(file_path, x, y, width=new_width, height=new_height)
+                    
                     c.showPage()
         
         c.save()
@@ -278,6 +293,20 @@ def merge_pdfs():
     except Exception as e:
         return jsonify({'error': f'Fehler beim Zusammenführen: {str(e)}'}), 500
 
+@app.route('/uploads/<filename>')
+def serve_uploaded_file(filename):
+    """Serviert hochgeladene Dateien für die Vorschau"""
+    try:
+        file_path = os.path.join(UPLOAD_FOLDER, filename)
+        
+        if not os.path.exists(file_path):
+            return "Datei nicht gefunden", 404
+        
+        return send_file(file_path)
+    
+    except Exception as e:
+        return f"Fehler beim Laden der Datei: {str(e)}", 500
+
 @app.route('/download/<filename>')
 def download_file(filename):
     """Download einer generierten Datei"""

output/.gitkeep

@@ -0,0 +1,2 @@
+# Diese Datei sorgt dafür, dass der output Ordner in Git erhalten bleibt
+# Der Ordnerinhalt wird durch .gitignore ignoriert

static/css/style.css

@@ -411,4 +411,101 @@ footer {
 /* File Type Icons */
 .file-type-pdf { color: #dc3545; }
 .file-type-image { color: #28a745; }
-.file-type-zip { color: #ffc107; }
+.file-type-zip { color: #ffc107; }
+
+/* Image Preview */
+.image-preview {
+    max-width: 120px;
+    max-height: 120px;
+    object-fit: cover;
+    border-radius: var(--border-radius);
+    border: 2px solid #e9ecef;
+    transition: all 0.3s ease;
+    cursor: pointer;
+}
+
+.image-preview:hover {
+    border-color: var(--primary-color);
+    transform: scale(1.05);
+}
+
+.image-preview.size-small {
+    max-width: 80px;
+    max-height: 80px;
+}
+
+.image-preview.size-medium {
+    max-width: 120px;
+    max-height: 120px;
+}
+
+.image-preview.size-large {
+    max-width: 160px;
+    max-height: 160px;
+}
+
+.image-preview-large {
+    max-width: 200px;
+    max-height: 200px;
+    cursor: pointer;
+}
+
+/* Rotation controls */
+.rotation-controls {
+    display: flex;
+    gap: 0.25rem;
+    margin-top: 0.5rem;
+}
+
+.rotation-btn {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 0.75rem;
+}
+
+/* Image rotation classes */
+.rotate-0 { transform: rotate(0deg); }
+.rotate-90 { transform: rotate(90deg); }
+.rotate-180 { transform: rotate(180deg); }
+.rotate-270 { transform: rotate(270deg); }
+
+/* Image modal */
+.image-modal .modal-body {
+    padding: 0;
+    text-align: center;
+}
+
+.image-modal .modal-body img {
+    max-width: 100%;
+    max-height: 80vh;
+    object-fit: contain;
+}
+
+/* File item enhanced */
+.file-item-enhanced {
+    padding: 1rem;
+    border-radius: var(--border-radius);
+    transition: all 0.3s ease;
+}
+
+.file-item-enhanced:hover {
+    background-color: rgba(0, 123, 255, 0.05);
+    transform: translateY(-2px);
+    box-shadow: var(--box-shadow-lg);
+}
+
+.image-info {
+    flex: 1;
+    min-width: 0;
+}
+
+.image-controls {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    align-items: flex-end;
+}

static/js/images-to-pdf.js

@@ -122,27 +122,50 @@ function displayFiles() {
 
 function createFileItem(file, index) {
     const div = document.createElement('div');
-    div.className = 'list-group-item file-item';
+    div.className = 'list-group-item file-item-enhanced';
     div.dataset.index = index;
     
+    // Initialize rotation if not set
+    if (!file.rotation) {
+        file.rotation = 0;
+    }
+    
     div.innerHTML = `
-        <div class="file-icon">
+        <div class="d-flex align-items-center">
-            <i class="${getFileIcon(file.original_name)}"></i>
+            <div class="image-preview-container me-3">
-        </div>
+                <img src="/uploads/${file.filename}" class="image-preview size-medium rotate-${file.rotation}" 
-        <div class="file-info">
+                     alt="${file.original_name}" onclick="showImageModal('${file.filename}', '${file.original_name}', ${index})">
-            <div class="file-name">${file.original_name}</div>
+            </div>
-            <div class="file-details">${formatFileSize(file.size)}</div>
+            <div class="image-info">
-        </div>
+                <div class="file-name fw-bold">${file.original_name}</div>
-        <div class="file-actions">
+                <div class="file-details text-muted">${formatFileSize(file.size)}</div>
-            <button type="button" class="btn btn-sm btn-outline-secondary" onclick="moveFileUp(${index})" ${index === 0 ? 'disabled' : ''}>
+                <div class="rotation-controls">
-                <i class="fas fa-arrow-up"></i>
+                    <button type="button" class="btn btn-sm btn-outline-primary rotation-btn" 
-            </button>
+                            onclick="rotateImage(${index}, -90)" title="Links drehen">
-            <button type="button" class="btn btn-sm btn-outline-secondary" onclick="moveFileDown(${index})" ${index === imagesToPdfFiles.length - 1 ? 'disabled' : ''}>
+                        <i class="fas fa-undo"></i>
-                <i class="fas fa-arrow-down"></i>
+                    </button>
-            </button>
+                    <button type="button" class="btn btn-sm btn-outline-primary rotation-btn" 
-            <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeFile(${index})">
+                            onclick="rotateImage(${index}, 90)" title="Rechts drehen">
-                <i class="fas fa-trash"></i>
+                        <i class="fas fa-redo"></i>
-            </button>
+                    </button>
+                    <small class="text-muted ms-2">${file.rotation}°</small>
+                </div>
+            </div>
+            <div class="image-controls">
+                <div class="d-flex gap-1 mb-2">
+                    <button type="button" class="btn btn-sm btn-outline-secondary" onclick="moveFileUp(${index})" 
+                            ${index === 0 ? 'disabled' : ''} title="Nach oben">
+                        <i class="fas fa-arrow-up"></i>
+                    </button>
+                    <button type="button" class="btn btn-sm btn-outline-secondary" onclick="moveFileDown(${index})" 
+                            ${index === imagesToPdfFiles.length - 1 ? 'disabled' : ''} title="Nach unten">
+                        <i class="fas fa-arrow-down"></i>
+                    </button>
+                </div>
+                <button type="button" class="btn btn-sm btn-outline-danger" onclick="removeFile(${index})" title="Entfernen">
+                    <i class="fas fa-trash"></i>
+                </button>
+            </div>
         </div>
     `;
     
@@ -200,11 +223,16 @@ async function convertToPdf() {
     setLoadingState(convertBtn, true);
     
     try {
-        const filenames = imagesToPdfFiles.map(file => file.filename);
+        // Include rotation data for each file
+        const filesWithRotation = imagesToPdfFiles.map(file => ({
+            filename: file.filename,
+            rotation: file.rotation || 0,
+            original_name: file.original_name
+        }));
         
         const response = await makeRequest('/api/convert-images-to-pdf', {
             method: 'POST',
-            body: JSON.stringify({ filenames })
+            body: JSON.stringify({ files: filesWithRotation })
         });
         
         if (response.success) {
@@ -264,7 +292,97 @@ function hideResults() {
     errorArea.style.display = 'none';
 }
 
+function rotateImage(index, degrees) {
+    if (index >= 0 && index < imagesToPdfFiles.length) {
+        imagesToPdfFiles[index].rotation = (imagesToPdfFiles[index].rotation + degrees) % 360;
+        if (imagesToPdfFiles[index].rotation < 0) {
+            imagesToPdfFiles[index].rotation += 360;
+        }
+        displayFiles();
+        showNotification(`Bild um ${degrees}° gedreht.`, 'info');
+    }
+}
+
+function showImageModal(filename, originalName, index) {
+    // Create modal if it doesn't exist
+    let modal = document.getElementById('image-modal');
+    if (!modal) {
+        modal = document.createElement('div');
+        modal.className = 'modal fade image-modal';
+        modal.id = 'image-modal';
+        modal.setAttribute('tabindex', '-1');
+        modal.setAttribute('aria-hidden', 'true');
+        
+        modal.innerHTML = `
+            <div class="modal-dialog modal-lg modal-dialog-centered">
+                <div class="modal-content">
+                    <div class="modal-header">
+                        <h5 class="modal-title" id="image-modal-title">${originalName}</h5>
+                        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+                    </div>
+                    <div class="modal-body">
+                        <img id="modal-image" src="/uploads/${filename}" class="img-fluid rotate-${imagesToPdfFiles[index].rotation}" alt="${originalName}">
+                    </div>
+                    <div class="modal-footer">
+                        <div class="btn-group me-auto">
+                            <button type="button" class="btn btn-outline-primary" onclick="rotateImageInModal(${index}, -90)">
+                                <i class="fas fa-undo me-1"></i>Links drehen
+                            </button>
+                            <button type="button" class="btn btn-outline-primary" onclick="rotateImageInModal(${index}, 90)">
+                                <i class="fas fa-redo me-1"></i>Rechts drehen
+                            </button>
+                        </div>
+                        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Schließen</button>
+                    </div>
+                </div>
+            </div>
+        `;
+        
+        document.body.appendChild(modal);
+    } else {
+        // Update existing modal
+        document.getElementById('image-modal-title').textContent = originalName;
+        const modalImage = document.getElementById('modal-image');
+        modalImage.src = `/uploads/${filename}`;
+        modalImage.alt = originalName;
+        modalImage.className = `img-fluid rotate-${imagesToPdfFiles[index].rotation}`;
+        
+        // Update rotation buttons
+        const rotateButtons = modal.querySelectorAll('.btn-outline-primary');
+        rotateButtons[0].onclick = () => rotateImageInModal(index, -90);
+        rotateButtons[1].onclick = () => rotateImageInModal(index, 90);
+    }
+    
+    // Show modal
+    const bootstrapModal = new bootstrap.Modal(modal);
+    bootstrapModal.show();
+}
+
+function rotateImageInModal(index, degrees) {
+    rotateImage(index, degrees);
+    
+    // Update modal image
+    const modalImage = document.getElementById('modal-image');
+    modalImage.className = `img-fluid rotate-${imagesToPdfFiles[index].rotation}`;
+}
+
+function updatePreviewSize() {
+    const previewSize = document.getElementById('preview-size').value;
+    const previews = document.querySelectorAll('.image-preview');
+    
+    previews.forEach(preview => {
+        // Remove existing size classes
+        preview.classList.remove('size-small', 'size-medium', 'size-large');
+        // Add new size class
+        preview.classList.add('size-' + previewSize);
+    });
+}
+
 // Global functions for button actions
 window.moveFileUp = moveFileUp;
 window.moveFileDown = moveFileDown;
-window.removeFile = removeFile;
+window.removeFile = removeFile;
+window.rotateImage = rotateImage;
+window.showImageModal = showImageModal;
+window.rotateImageInModal = rotateImageInModal;
+window.updatePreviewSize = updatePreviewSize;

templates/images_to_pdf.html

@@ -131,6 +131,15 @@
                         Seitenverhältnis beibehalten
                     </label>
                 </div>
+
+                <div class="mb-3">
+                    <label class="form-label">Bildvorschau-Größe:</label>
+                    <select id="preview-size" class="form-select" onchange="updatePreviewSize()">
+                        <option value="small">Klein (80px)</option>
+                        <option value="medium" selected>Mittel (120px)</option>
+                        <option value="large">Groß (160px)</option>
+                    </select>
+                </div>
             </div>
         </div>
 

uploads/.gitkeep

@@ -0,0 +1,2 @@
+# Diese Datei sorgt dafür, dass der uploads Ordner in Git erhalten bleibt
+# Der Ordnerinhalt wird durch .gitignore ignoriert