Initial commit — Copydev Imposing Tool

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>
2026-03-20 10:54:02 +01:00
commit e3dfd90933
30 changed files with 2364 additions and 0 deletions
--- a/app/engine/step_repeat.py
+++ b/app/engine/step_repeat.py
@@ -0,0 +1,66 @@
+"""Moteur Step & Repeat : dupliquer une page plusieurs fois sur une feuille."""
+
+from pypdf import PdfReader, PdfWriter, PageObject, Transformation
+from .pdf_utils import get_page_size, smart_crop_marks
+import math
+
+
+def step_and_repeat(input_path, output_path, sheet_size=(841.89, 595.28),
+                    copies_h=None, copies_v=None, spacing_h=0, spacing_v=0,
+                    crop_marks=False):
+    """Dupliquer chaque page sur une feuille.
+
+    copies_h, copies_v: nombre de copies horizontales/verticales (None = auto)
+    spacing_h, spacing_v: espacement en points
+    """
+    reader = PdfReader(input_path)
+    sheet_w, sheet_h = sheet_size
+    writer = PdfWriter()
+
+    for page in reader.pages:
+        page_w, page_h = get_page_size(page)
+
+        # Auto-calcul du nombre de copies
+        if copies_h is None:
+            copies_h_calc = max(1, int((sheet_w + spacing_h) / (page_w + spacing_h)))
+        else:
+            copies_h_calc = copies_h
+
+        if copies_v is None:
+            copies_v_calc = max(1, int((sheet_h + spacing_v) / (page_h + spacing_v)))
+        else:
+            copies_v_calc = copies_v
+
+        # Centrage sur la feuille
+        total_w = copies_h_calc * page_w + (copies_h_calc - 1) * spacing_h
+        total_h = copies_v_calc * page_h + (copies_v_calc - 1) * spacing_v
+        start_x = (sheet_w - total_w) / 2
+        start_y = (sheet_h - total_h) / 2
+
+        sheet = PageObject.create_blank_page(width=sheet_w, height=sheet_h)
+        grid_positions = []
+
+        for row in range(copies_v_calc):
+            for col in range(copies_h_calc):
+                x = start_x + col * (page_w + spacing_h)
+                y = start_y + (copies_v_calc - 1 - row) * (page_h + spacing_v)
+
+                overlay = PageObject.create_blank_page(width=sheet_w, height=sheet_h)
+                overlay.merge_page(page)
+                overlay.add_transformation(Transformation().translate(x, y))
+                sheet.merge_page(overlay)
+                grid_positions.append((col, row))
+
+        if crop_marks and grid_positions:
+            marks = smart_crop_marks(
+                sheet_w, sheet_h, grid_positions,
+                page_w + spacing_h, page_h + spacing_v,
+                start_x, sheet_h - start_y - total_h
+            )
+            sheet.merge_page(marks)
+
+        writer.add_page(sheet)
+
+    with open(output_path, "wb") as f:
+        writer.write(f)
+    return output_path