from reportlab.lib.pagesizes import letter
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import SimpleDocTemplate, Paragraph
from reportlab.lib import colors
from reportlab.lib.units import inch
from reportlab.lib.validators import Auto

def create_pdf():
    doc = SimpleDocTemplate("output.pdf", pagesize=letter)
    styles = getSampleStyleSheet()

    # 定义一个多行文本域的样式
    text_style = styles["Normal"]
    text_style.wordWrap = 'CJK'
    text_style.fontSize = 12
    text_style.leading = 14

    # 定义一个多行文本域的框架
    frame = Frame(
        x=1 * inch,
        y=1 * inch,
        width=6 * inch,
        height=4 * inch,
        showBoundary=1,
        leftPadding=5,
        bottomPadding=5,
        rightPadding=5,
        topPadding=5,
    )

    # 定义一个多行文本域的内容
    text = "这是一个多行文本域的示例。\n这是第二行。\n这是第三行。"

    # 创建一个Paragraph对象，并将其放入框架中
    p = Paragraph(text, text_style)
    p.wrapOn(doc, frame.width, frame.height)
    p.drawOn(doc, frame.x, frame.y)

    # 将框架添加到文档中
    doc.addPageTemplates([PageTemplate(frames=[frame])])

    # 保存文档
    doc.build()

create_pdf()