First commit

2026-02-21 21:55:42 +00:00
commit 060629ca94
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+"""CJK font registration helper for reportlab using WenQuanYi Micro Hei TTF."""
+
+from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.ttfonts import TTFont
+
+_REGISTERED = False
+CJK_FONT = "Helvetica"  # fallback
+
+
+def register_cjk_font():
+    """Register a CJK font with reportlab. Returns the font name to use."""
+    global _REGISTERED, CJK_FONT
+    if _REGISTERED:
+        return CJK_FONT
+
+    # WenQuanYi Micro Hei: TTC with TrueType outlines (reportlab compatible)
+    # subfontIndex 0 = regular
+    candidates = [
+        "/usr/share/fonts/wenquanyi/wqy-microhei/wqy-microhei.ttc",
+        "/usr/share/fonts/wqy-microhei/wqy-microhei.ttc",
+    ]
+
+    for path in candidates:
+        try:
+            pdfmetrics.registerFont(TTFont("WenQuanYi", path, subfontIndex=0))
+            CJK_FONT = "WenQuanYi"
+            _REGISTERED = True
+            return CJK_FONT
+        except Exception:
+            continue
+
+    print("WARNING: No CJK font available, Chinese text may not render correctly")
+    _REGISTERED = True
+    return CJK_FONT
+
+
+def _has_cjk(text: str) -> bool:
+    """Check if text contains CJK characters."""
+    for ch in text:
+        cp = ord(ch)
+        if (
+            0x4E00 <= cp <= 0x9FFF  # CJK Unified Ideographs
+            or 0x3400 <= cp <= 0x4DBF  # CJK Extension A
+            or 0x3000 <= cp <= 0x303F  # CJK Symbols
+            or 0xFF00 <= cp <= 0xFFEF  # Fullwidth Forms
+            or 0x2E80 <= cp <= 0x2EFF  # CJK Radicals
+            or 0xF900 <= cp <= 0xFAFF  # CJK Compatibility
+        ):
+            return True
+    return False
+
+
+def draw_cjk_text(c, x, y, text, font_name="Helvetica", font_size=10):
+    """Draw text, switching to CJK font if needed."""
+    cjk_font = register_cjk_font()
+    if _has_cjk(text) and cjk_font != "Helvetica":
+        c.setFont(cjk_font, font_size)
+    else:
+        c.setFont(font_name, font_size)
+    c.drawString(x, y, text)