e3dfd90933
Outil d'imposition PDF desktop (PyQt6) remplacant Quite Imposing Plus. 9 fonctions : livret, n-up, step & repeat, imposition manuelle, jointure pages, pages blanches, numerotation, masquage, fonds perdus. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
"""Moteur Step & Repeat : dupliquer une page plusieurs fois sur une feuille."""
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from pypdf import PdfReader, PdfWriter, PageObject, Transformation
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from .pdf_utils import get_page_size, smart_crop_marks
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import math
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def step_and_repeat(input_path, output_path, sheet_size=(841.89, 595.28),
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copies_h=None, copies_v=None, spacing_h=0, spacing_v=0,
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crop_marks=False):
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"""Dupliquer chaque page sur une feuille.
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copies_h, copies_v: nombre de copies horizontales/verticales (None = auto)
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spacing_h, spacing_v: espacement en points
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"""
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reader = PdfReader(input_path)
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sheet_w, sheet_h = sheet_size
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writer = PdfWriter()
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for page in reader.pages:
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page_w, page_h = get_page_size(page)
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# Auto-calcul du nombre de copies
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if copies_h is None:
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copies_h_calc = max(1, int((sheet_w + spacing_h) / (page_w + spacing_h)))
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else:
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copies_h_calc = copies_h
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if copies_v is None:
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copies_v_calc = max(1, int((sheet_h + spacing_v) / (page_h + spacing_v)))
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else:
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copies_v_calc = copies_v
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# Centrage sur la feuille
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total_w = copies_h_calc * page_w + (copies_h_calc - 1) * spacing_h
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total_h = copies_v_calc * page_h + (copies_v_calc - 1) * spacing_v
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start_x = (sheet_w - total_w) / 2
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start_y = (sheet_h - total_h) / 2
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sheet = PageObject.create_blank_page(width=sheet_w, height=sheet_h)
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grid_positions = []
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for row in range(copies_v_calc):
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for col in range(copies_h_calc):
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x = start_x + col * (page_w + spacing_h)
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y = start_y + (copies_v_calc - 1 - row) * (page_h + spacing_v)
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overlay = PageObject.create_blank_page(width=sheet_w, height=sheet_h)
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overlay.merge_page(page)
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overlay.add_transformation(Transformation().translate(x, y))
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sheet.merge_page(overlay)
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grid_positions.append((col, row))
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if crop_marks and grid_positions:
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marks = smart_crop_marks(
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sheet_w, sheet_h, grid_positions,
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page_w + spacing_h, page_h + spacing_v,
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start_x, sheet_h - start_y - total_h
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)
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sheet.merge_page(marks)
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writer.add_page(sheet)
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with open(output_path, "wb") as f:
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writer.write(f)
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return output_path
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