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>
54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
"""Moteur Masquage (Masking Tape) — rectangles blancs."""
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from pypdf import PdfReader, PdfWriter
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from reportlab.pdfgen import canvas
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from .pdf_utils import get_page_size
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import io
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def apply_masking(input_path, output_path, rectangles, apply_to="all"):
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"""Appliquer des rectangles blancs de masquage.
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rectangles: liste de dicts {"x": pt, "y": pt, "width": pt, "height": pt}
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apply_to: "all", "even", "odd", ou un numero de page (1-based)
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"""
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reader = PdfReader(input_path)
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writer = PdfWriter()
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for i, page in enumerate(reader.pages):
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page_num = i + 1
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should_apply = False
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if apply_to == "all":
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should_apply = True
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elif apply_to == "even":
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should_apply = page_num % 2 == 0
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elif apply_to == "odd":
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should_apply = page_num % 2 != 0
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elif isinstance(apply_to, int):
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should_apply = page_num == apply_to
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if should_apply and rectangles:
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w, h = get_page_size(page)
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packet = io.BytesIO()
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c = canvas.Canvas(packet, pagesize=(w, h))
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c.setFillColorRGB(1, 1, 1)
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c.setStrokeColorRGB(1, 1, 1)
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for rect in rectangles:
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c.rect(rect["x"], rect["y"], rect["width"], rect["height"],
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fill=1, stroke=0)
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c.showPage()
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c.save()
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packet.seek(0)
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overlay_reader = PdfReader(packet)
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page.merge_page(overlay_reader.pages[0])
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writer.add_page(page)
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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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