202834a794
- Demonter les pages : couper en 2 sans reordonner (sous Delivretiser) - Masquage visuel : selection au curseur sur l'apercu + plage de pages - Regles horizontale/verticale en mm (menu Affichage) - Fonds perdus : filigrane rouge pour visualiser les bleeds - Reperes de coupe : marques a l'exterieur (page agrandie), 2 traits/coin - Numerotation : couleur configurable via selecteur - Decalage : Trim & Shift renomme en francais, creep -> chasse - Recadrages multiples cumulatifs (plages differentes) - Fix spinbox format personnalise (fleches aleatoires) - Fix combo livret : option Automatique preservee Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
109 lines
4.1 KiB
Python
109 lines
4.1 KiB
Python
"""Moteur Reperes de coupe autonomes."""
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from pypdf import PdfReader, PdfWriter, PageObject, Transformation
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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 add_crop_marks(input_path, output_path, mark_length=14.17, mark_offset=7.09,
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line_width=0.25, color=(0, 0, 0), center_marks=False,
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apply_to="all", current_page=0, **_kwargs):
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"""Ajouter des reperes de coupe sur les pages.
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Les marques sont placees a l'exterieur de la zone d'impression.
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Chaque coin a 2 traits (1 horizontal + 1 vertical) formant un L.
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La page est agrandie pour contenir les marques.
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"""
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reader = PdfReader(input_path)
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writer = PdfWriter()
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margin = mark_offset + mark_length
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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 apply_to == "current":
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should_apply = i == current_page
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if should_apply:
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w, h = get_page_size(page)
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# Canvas agrandi pour inclure les marques
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cw = w + 2 * margin
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ch = h + 2 * margin
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packet = io.BytesIO()
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c = canvas.Canvas(packet, pagesize=(cw, ch))
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c.setLineWidth(line_width)
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c.setStrokeColorRGB(*color)
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# Les coordonnees de la zone d'impression dans le canvas agrandi
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ox, oy = margin, margin # origine de la page originale
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# 4 coins — 2 traits par coin (L exterieur)
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# Bas-gauche
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c.line(ox - mark_offset - mark_length, oy, ox - mark_offset, oy)
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c.line(ox, oy - mark_offset - mark_length, ox, oy - mark_offset)
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# Bas-droite
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c.line(ox + w + mark_offset, oy, ox + w + mark_offset + mark_length, oy)
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c.line(ox + w, oy - mark_offset - mark_length, ox + w, oy - mark_offset)
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# Haut-gauche
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c.line(ox - mark_offset - mark_length, oy + h, ox - mark_offset, oy + h)
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c.line(ox, oy + h + mark_offset, ox, oy + h + mark_offset + mark_length)
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# Haut-droite
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c.line(ox + w + mark_offset, oy + h, ox + w + mark_offset + mark_length, oy + h)
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c.line(ox + w, oy + h + mark_offset, ox + w, oy + h + mark_offset + mark_length)
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# Reperes de centrage
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if center_marks:
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mid_x = ox + w / 2
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mid_y = oy + h / 2
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ml = mark_length * 0.7
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# Haut
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c.line(mid_x, oy + h + mark_offset, mid_x, oy + h + mark_offset + ml)
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# Bas
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c.line(mid_x, oy - mark_offset, mid_x, oy - mark_offset - ml)
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# Gauche
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c.line(ox - mark_offset, mid_y, ox - mark_offset - ml, mid_y)
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# Droite
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c.line(ox + w + mark_offset, mid_y, ox + w + mark_offset + ml, mid_y)
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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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overlay_page = overlay_reader.pages[0]
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# Creer une nouvelle page agrandie
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new_page = PageObject.create_blank_page(width=cw, height=ch)
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# Placer la page originale au centre (decalee de margin)
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page.add_transformation(Transformation().translate(margin, margin))
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new_page.merge_page(page)
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# Ajouter les marques de coupe par-dessus
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new_page.merge_page(overlay_page)
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writer.add_page(new_page)
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else:
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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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def remove_crop_marks(input_path, output_path):
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"""Enlever les reperes de coupe (remet mediabox = cropbox)."""
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reader = PdfReader(input_path)
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writer = PdfWriter()
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for page in reader.pages:
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page.cropbox = page.mediabox
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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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