Python使用PyMuPDF实现添加PDF水印

pip install PyMuPDF

import fitz

def add_watermark_to_pdf(pdf_path, watermark_text, output_path):
    try:
        doc = fitz.open(pdf_path)
        watermark_text = str(watermark_text)
        for page in doc:
            textbox = fitz.Rect(100, 100, 300, 200)  # 设置水印的位置和大小
            page.insert_textbox(textbox, watermark_text, fontsize=20, rotate=90)
        doc.save(output_path)
        doc.close()
        print("水印添加成功！")
    except Exception as e:
        print("添加水印时出错：", str(e))

pdf_path = "input.pdf"
watermark_text = "我的水印"
output_path = "output.pdf"
add_watermark_to_pdf(pdf_path, watermark_text, output_path)

import wx
import fitz
class WatermarkFrame(wx.Frame):
    def __init__(self, parent, title):
        super(WatermarkFrame, self).__init__(parent, title=title, size=(400, 200))
        panel = wx.Panel(self)
        # 创建选择文件按钮
        self.file_picker = wx.FilePickerCtrl(panel, style=wx.FLP_OPEN)
        # 创建水印文本输入框
        self.watermark_text = wx.TextCtrl(panel, style=wx.TE_PROCESS_ENTER)
        # 创建保存文件夹按钮
        self.save_folder_picker = wx.DirPickerCtrl(panel, style=wx.DIRP_USE_TEXTCTRL)
        # 创建生成按钮
        generate_button = wx.Button(panel, label='生成')
        generate_button.Bind(wx.EVT_BUTTON, self.on_generate_button_click)
        # 创建布局
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.file_picker, proportion=0, flag=wx.ALL|wx.EXPAND, border=10)
        sizer.Add(self.watermark_text, proportion=0, flag=wx.ALL|wx.EXPAND, border=10)
        sizer.Add(self.save_folder_picker, proportion=0, flag=wx.ALL|wx.EXPAND, border=10)
        sizer.Add(generate_button, proportion=0, flag=wx.ALL|wx.CENTER, border=10)
        panel.SetSizer(sizer)
    def on_generate_button_click(self, event):
        file_path = self.file_picker.GetPath()
        watermark_text = self.watermark_text.GetValue()
        save_folder = self.save_folder_picker.GetPath()
        if file_path and watermark_text and save_folder:
            try:
                doc = fitz.open(file_path)
                # watermark_text = watermark_text.encode('utf-8')
                watermark_text = str(watermark_text)
                for page in doc:
                    textbox = fitz.Rect(100, 100, 300, 200)  # 水印的位置和大小
                    # page.insert_textbox(textbox, watermark_text, fontsize=20, rotate=45)
                    page.insert_textbox(textbox, watermark_text, fontsize=20, rotate=90)
                # output_file_path = f"{save_folder}/watermarked_{file_path.split('/')[-1]}"
                output_file_path = f"outputwatermark.pdf"
                doc.save(output_file_path)
                doc.close()
                wx.MessageBox("水印添加成功！", "成功", wx.OK | wx.ICON_INFORMATION)
            except Exception as e:
                wx.MessageBox(str(e), "错误", wx.OK | wx.ICON_ERROR)
        else:
            wx.MessageBox("请选择文件、输入水印文本和保存文件夹！", "错误", wx.OK | wx.ICON_ERROR)
if __name__ == '__main__':
    app = wx.App()
    frame = WatermarkFrame(None, "添加水印")
    frame.Show()
    app.MainLoop()