105 lines
3.5 KiB
Python
105 lines
3.5 KiB
Python
import os
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from reportlab.lib.pagesizes import A3
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from reportlab.platypus import SimpleDocTemplate, Image
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from PyPDF2 import PdfReader, PdfWriter
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from PIL import Image as PILImage
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def create_pdf_from_images(directory, output_pdf):
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image_extensions = {'.jpg', '.jpeg', '.png', '.gif', '.bmp', '.tiff', '.webp'}
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image_files = []
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# 遍历目录并筛选图片文件
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for root, dirs, files in os.walk(directory):
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for file in files:
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_, ext = os.path.splitext(file)
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if ext.lower() in image_extensions:
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image_files.append(os.path.join(root, file))
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# 如果没有找到任何图片，返回
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if not image_files:
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print(f"No image files found in {directory}.")
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return
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# 按文件名排序，确保图片按顺序
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image_files.sort()
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# 设置PDF文档，使用 A3 页面大小
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doc = SimpleDocTemplate(output_pdf, pagesize=A3)
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# 创建图片列表
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image_list = []
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for image_file in image_files:
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# 使用 Pillow 获取图片的尺寸
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with PILImage.open(image_file) as img:
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img_width, img_height = img.size
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# 设置目标宽度（适应A3页面宽度，最大842点）
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target_width = 800 # 设置图片宽度为最大800点，适应A3页面
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# 计算新的高度，保持原始宽高比
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target_height = int(img_height * (target_width / img_width))
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# 限制图片的最大高度，避免超出页面
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max_page_height = 1091 - 100 # 留出一些空间，A3页面高度1191点
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if target_height > max_page_height:
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target_height = max_page_height
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target_width = int(target_height * (img_width / img_height)) # 调整宽度保持比例
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# 创建图片对象并添加到图片列表
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img = Image(image_file, width=target_width, height=target_height)
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image_list.append(img)
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# 生成 PDF
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doc.build(image_list)
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print(f"PDF {output_pdf} created successfully.")
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def encrypt_pdf(input_pdf, output_pdf, password):
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# 使用 PyPDF2 加密 PDF
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writer = PdfWriter()
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with open(input_pdf, "rb") as file:
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reader = PdfReader(file)
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for page in reader.pages:
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writer.add_page(page)
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with open(output_pdf, "wb") as file:
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writer.encrypt(password)
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writer.write(file)
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print(f"PDF {output_pdf} encrypted successfully.")
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def generate_pdf_from_images(directory):
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# 获取当前目录下所有数字命名的文件夹
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folder_names = [folder for folder in os.listdir(directory)
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if os.path.isdir(os.path.join(directory, folder)) and folder.isdigit()]
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# 如果没有数字命名的文件夹，提示并返回
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if not folder_names:
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print("No numeric-named folders found.")
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return
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# 循环处理每个数字命名的文件夹
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for folder_name in folder_names:
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folder_path = os.path.join(directory, folder_name)
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# 设置 PDF 输出路径，使用文件夹名称作为文件名，并存储到 ./PDF 目录下
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output_pdf = f"./PDF/{folder_name}.pdf"
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# 检查 PDF 文件是否已存在
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if os.path.exists(output_pdf):
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print(f"PDF {output_pdf} already exists. Skipping...")
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continue
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# 创建目录
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os.makedirs("./PDF", exist_ok=True)
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# 创建 PDF
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create_pdf_from_images(folder_path, output_pdf)
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# 加密 PDF
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encrypt_pdf(output_pdf, output_pdf, "4000") # 密码设置为 4000
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# 返回PDF位置，用于发送到群里
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return os.path.abspath(output_pdf)
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