z230

A4 enlargement/10 test.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import fitz  # PyMuPDF
+import os
+from pathlib import Path
+
+# ===============================
+# 📁 FOLDER SETTINGS
+# ===============================
+input_folder = Path(r"u:\Dropbox\Ordinace\Dokumentace_ke_zpracování\A4 expand")
+output_suffix = "_A4scaled.pdf"
+
+# A4 portrait size in points
+A4_WIDTH, A4_HEIGHT = 595, 842
+
+# ===============================
+# ⚙️ FUNCTION
+# ===============================
+def normalize_to_A4_portrait(pdf_path: Path):
+    output_path = pdf_path.with_name(pdf_path.stem + output_suffix)
+
+    # skip if already exists
+    if output_path.exists():
+        try:
+            output_path.unlink()
+            print(f"🧹 Deleted old: {output_path.name}")
+        except PermissionError:
+            print(f"⚠️ Skipped {output_path.name} (open elsewhere)")
+            return
+
+    src = fitz.open(pdf_path)
+    dst = fitz.open()
+    changed = False
+
+    for i, page in enumerate(src, 1):
+        rect = page.rect
+        w, h = rect.width, rect.height
+
+        # check if already close to A4 size (within 2%)
+        if abs(w - A4_WIDTH) < 12 and abs(h - A4_HEIGHT) < 17:
+            # copy directly without change
+            dst.insert_pdf(src, from_page=i - 1, to_page=i - 1)
+            print(f"✅ {pdf_path.name} page {i}: already A4, copied as-is.")
+            continue
+
+        changed = True
+        scale = min(A4_WIDTH / w, A4_HEIGHT / h)
+        new_w, new_h = w * scale, h * scale
+
+        # horizontal center, vertical TOP
+        x_off = (A4_WIDTH - new_w) / 2
+        y_off = 0  # 👈 place at top edge
+
+        new_page = dst.new_page(width=A4_WIDTH, height=A4_HEIGHT)
+        new_page.show_pdf_page(
+            fitz.Rect(x_off, y_off, x_off + new_w, y_off + new_h),
+            src,
+            page.number
+        )
+
+        print(f"📄 {pdf_path.name} page {i}: {w:.0f}×{h:.0f} → {new_w:.0f}×{new_h:.0f} (top-aligned)")
+
+    dst.save(output_path)
+    src.close()
+    dst.close()
+
+    if changed:
+        print(f"✅ Saved normalized A4 PDF: {output_path.name}\n")
+    else:
+        print(f"➡️ No change needed: {pdf_path.name}\n")
+
+
+# ===============================
+# 🚀 MAIN LOOP
+# ===============================
+for file in input_folder.glob("*.pdf"):
+    normalize_to_A4_portrait(file)
+
+print("\n🎉 All PDFs processed — scaled to A4 portrait, top-aligned.")