112 lines
4.8 KiB
Python
112 lines
4.8 KiB
Python
# ============================================================
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# 演示手卡 Markdown → PDF（A4，CJK 字体，reportlab 轻量渲染）
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# 用法: python demo-data/md_handout_to_pdf.py 输入.md 输出.pdf
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# ============================================================
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from __future__ import annotations
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import re
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import sys
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from pathlib import Path
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from reportlab.lib import colors
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from reportlab.lib.pagesizes import A4
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from reportlab.lib.styles import ParagraphStyle
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from reportlab.lib.units import mm
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from reportlab.pdfbase import pdfmetrics
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from reportlab.pdfbase.ttfonts import TTFont
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from reportlab.platypus import (
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Paragraph,
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SimpleDocTemplate,
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Spacer,
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Table,
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TableStyle,
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)
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FONT_DIR = Path(sys.executable).parent.parent.parent / "fonts"
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pdfmetrics.registerFont(TTFont("NotoSC", str(FONT_DIR / "NotoSansSC-Regular.ttf")))
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pdfmetrics.registerFont(TTFont("NotoSC-B", str(FONT_DIR / "NotoSansSC-Bold.ttf")))
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pdfmetrics.registerFontFamily("NotoSC", normal="NotoSC", bold="NotoSC-B", italic="NotoSC", boldItalic="NotoSC-B")
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H1 = ParagraphStyle("h1", fontName="NotoSC-B", fontSize=15, leading=20, spaceAfter=4, textColor=colors.HexColor("#1a3a6b"))
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H2 = ParagraphStyle("h2", fontName="NotoSC-B", fontSize=11.5, leading=16, spaceBefore=7, spaceAfter=3, textColor=colors.HexColor("#1a3a6b"))
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BODY = ParagraphStyle("body", fontName="NotoSC", fontSize=8.8, leading=13.2, spaceAfter=2)
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QUOTE = ParagraphStyle("quote", parent=BODY, leftIndent=8, textColor=colors.HexColor("#666666"), fontSize=8.2, leading=12)
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CELL = ParagraphStyle("cell", fontName="NotoSC", fontSize=8.2, leading=11.5)
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CELL_B = ParagraphStyle("cellb", parent=CELL, fontName="NotoSC-B", textColor=colors.white)
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def inline(text: str) -> str:
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text = text.replace("&", "&").replace("<", "<").replace(">", ">")
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text = re.sub(r"\*\*(.+?)\*\*", r'<font name="NotoSC-B">\1</font>', text)
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text = re.sub(r"`(.+?)`", r'<font name="NotoSC" color="#8a4b08">\1</font>', text)
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return text
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def render(md: str) -> list:
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flow = []
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lines = md.splitlines()
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i = 0
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while i < len(lines):
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line = lines[i].rstrip()
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if not line.strip():
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i += 1
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continue
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if line.startswith("# "):
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flow.append(Paragraph(inline(line[2:]), H1))
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elif line.startswith("## "):
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flow.append(Paragraph(inline(line[3:]), H2))
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elif line.startswith("> "):
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flow.append(Paragraph(inline(line[2:]), QUOTE))
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elif line.startswith("- "):
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flow.append(Paragraph("· " + inline(line[2:]), BODY))
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elif line.startswith("|"):
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rows = []
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while i < len(lines) and lines[i].strip().startswith("|"):
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cells = [c.strip() for c in lines[i].strip().strip("|").split("|")]
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if not all(re.fullmatch(r":?-{2,}:?", c or "---") for c in cells):
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rows.append(cells)
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i += 1
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i -= 1
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if rows:
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ncol = max(len(r) for r in rows)
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data = []
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for ri, r in enumerate(rows):
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st = CELL_B if ri == 0 else CELL
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data.append([Paragraph(inline(c), st) for c in r] + [""] * (ncol - len(r)))
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page_w = A4[0] - 24 * mm
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weights = [max((len(str(c)) for c in col), default=4) for col in zip(*[list(r) + [""] * (ncol - len(r)) for r in rows])]
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total = sum(weights) or 1
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widths = [max(page_w * w / total, 40) for w in weights] # 窄列保底 40pt
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scale = page_w / sum(widths)
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tbl = Table(data, colWidths=[w * scale for w in widths])
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tbl.setStyle(TableStyle([
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("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#1a3a6b")),
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("ROWBACKGROUNDS", (0, 1), (-1, -1), [colors.white, colors.HexColor("#f2f5fa")]),
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("GRID", (0, 0), (-1, -1), 0.4, colors.HexColor("#c9d3e0")),
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("VALIGN", (0, 0), (-1, -1), "TOP"),
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("TOPPADDING", (0, 0), (-1, -1), 2.5),
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("BOTTOMPADDING", (0, 0), (-1, -1), 2.5),
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("LEFTPADDING", (0, 0), (-1, -1), 4),
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("RIGHTPADDING", (0, 0), (-1, -1), 4),
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]))
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flow.append(tbl)
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flow.append(Spacer(1, 3))
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else:
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flow.append(Paragraph(inline(line), BODY))
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i += 1
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return flow
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def main() -> None:
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src, dst = Path(sys.argv[1]), Path(sys.argv[2])
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doc = SimpleDocTemplate(str(dst), pagesize=A4,
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leftMargin=12 * mm, rightMargin=12 * mm,
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topMargin=11 * mm, bottomMargin=11 * mm,
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title="锐扬 APS 智能体 · 演示手卡")
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doc.build(render(src.read_text(encoding="utf-8")))
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print(f"PDF 已生成: {dst}")
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if __name__ == "__main__":
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main()
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