50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
from fastapi import FastAPI, Request
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from fastapi.staticfiles import StaticFiles
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from pydantic import BaseModel
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from reportlab.pdfgen import canvas
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from reportlab.lib.pagesizes import A4
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from reportlab.pdfbase.ttfonts import TTFont
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from reportlab.pdfbase import pdfmetrics
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from reportlab.pdfbase.pdfmetrics import stringWidth
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import uuid, os
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app = FastAPI()
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os.makedirs("static", exist_ok=True)
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app.mount("/static", StaticFiles(directory="static"), name="static")
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pdfmetrics.registerFont(TTFont("TWFont", "NotoSansTC-Medium.ttf"))
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class TextRequest(BaseModel):
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content: str
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@app.post("/generate-pdf")
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def generate_pdf(data: TextRequest, request: Request):
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filename = f"{uuid.uuid4()}.pdf"
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filepath = os.path.join("static", filename)
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c = canvas.Canvas(filepath, pagesize=A4)
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c.setFont("TWFont", 12)
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text_obj = c.beginText(50, 800)
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text_obj.setFont("TWFont", 12)
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max_line_width = A4[0] - 50 * 2 # 頁寬扣左右邊距
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for line in data.content.splitlines():
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while stringWidth(line, "TWFont", 12) > max_line_width:
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for i in range(len(line), 0, -1):
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if stringWidth(line[:i], "TWFont", 12) <= max_line_width:
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text_obj.textLine(line[:i])
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line = line[i:]
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break
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text_obj.textLine(line)
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c.drawText(text_obj)
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c.showPage()
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c.save()
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return {
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"download_url": str(request.base_url).rstrip("/") + f"/static/{filename}"
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}
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