Create app.py

app.py

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+import gradio as gr
+import io
+from PIL import Image
+
+import barcode
+from barcode.writer import ImageWriter
+import qrcode
+from pylibdmtx import encode
+
+def generate_barcode(barcode_type, data):
+    if barcode_type == 'EAN13':
+        try:
+            ean = barcode.get('ean13', data, writer=ImageWriter())
+        except Exception as e:
+            return f"Error: {e}"
+        buffer = io.BytesIO()
+        ean.write(buffer)
+        buffer.seek(0)
+        img = Image.open(buffer)
+        return img
+    elif barcode_type == 'QR Code':
+        img = qrcode.make(data)
+        return img
+    elif barcode_type == 'DataMatrix':
+        try:
+            encoded = encode(data.encode('utf-8'))
+        except Exception as e:
+            return f"Error: {e}"
+        buffer = io.BytesIO(encoded.png)
+        img = Image.open(buffer)
+        return img
+    else:
+        return "Unsupported barcode type."
+
+with gr.Blocks() as demo:
+    gr.Markdown("### 條碼生成器 (EAN13, QR Code, DataMatrix)")
+    barcode_type = gr.Radio(['EAN13', 'QR Code', 'DataMatrix'], value='EAN13', label="選擇條碼格式")
+    data_input = gr.Textbox(label="輸入條碼內容", value="123456789012")
+    output = gr.Image(label="生成的條碼")
+    error_msg = gr.Textbox(visible=False, interactive=False)
+
+    def on_generate(barcode_type, data):
+        result = generate_barcode(barcode_type, data)
+        if isinstance(result, str):  # error message
+            error_msg.visible = True
+            error_msg.value = result
+            return None
+        else:
+            error_msg.visible = False
+            error_msg.value = ""
+            return result
+
+    data_input.change(on_generate, [barcode_type, data_input], output)
+    barcode_type.change(on_generate, [barcode_type, data_input], output)
+
+demo.launch()