z230

2026-05-06 13:24:43 +02:00
parent 15f70988dc
commit 06b1f87107
11 changed files with 1031 additions and 0 deletions
@@ -0,0 +1,42 @@
+from pathlib import Path
+from pypdf import PdfReader, PdfWriter, Transformation, PageObject
+
+INPUT_PDF = Path(r"2009-05-04 Puzzle SudokuKiller 376 [difficulty 4 of 10] [average solving time 30 min].pdf")
+OUTPUT_PDF = Path(r"sudoku_50pct_A4.pdf")
+
+# A4 v bodech, 72 dpi
+A4_WIDTH = 595.2756
+A4_HEIGHT = 841.8898
+
+SCALE = 0.5
+
+reader = PdfReader(str(INPUT_PDF))
+source_page = reader.pages[0]
+
+source_width = float(source_page.mediabox.width)
+source_height = float(source_page.mediabox.height)
+
+# Nová prázdná A4 stránka
+new_page = PageObject.create_blank_page(
+    width=A4_WIDTH,
+    height=A4_HEIGHT
+)
+
+# Výpočet pozice pro vycentrování
+target_width = source_width * SCALE
+target_height = source_height * SCALE
+
+x = (A4_WIDTH - target_width) / 2
+y = (A4_HEIGHT - target_height) / 2
+
+# Vložit původní PDF stránku jako vektorový objekt, zmenšený na 50 %
+transform = Transformation().scale(SCALE).translate(x, y)
+new_page.merge_transformed_page(source_page, transform, expand=False)
+
+writer = PdfWriter()
+writer.add_page(new_page)
+
+with OUTPUT_PDF.open("wb") as f:
+    writer.write(f)
+
+print(f"Hotovo: {OUTPUT_PDF}")