V2.1.0 — Formats personnalises + reperes de coupe

- Formats personnalises dans tous les menus deroulants de format :
  - "Personnalise..." : saisie libre largeur x hauteur en mm
  - "Ajouter un format..." : sauvegarder un format custom (persistant)
  - Formats custom affiches dans le dropdown avec separateur
- Reperes de coupe (Annotations > Reperes de coupe) :
  - Longueur, distance du bord, epaisseur configurables
  - Couleur : noir, gris, CMYK
  - Reperes de centrage optionnels
  - Appliquer a : toutes, paires, impaires, page courante
  - Enlever les reperes de coupe (menu)
- Step & Repeat : ajout des marges (haut, bas, gauche, droite)
- Tous les dialogues de format migres vers format_combo

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/dialogs/manual_impose_dialog.py

@@ -2,9 +2,9 @@
 
 from PyQt6.QtWidgets import (QDialog, QVBoxLayout, QHBoxLayout, QLabel,
                               QGroupBox, QComboBox, QSpinBox, QDoubleSpinBox,
-                              QDialogButtonBox, QPushButton, QListWidget,
-                              QCheckBox)
-from app.engine.pdf_utils import PAGE_SIZES, mm_to_pt
+                              QDialogButtonBox, QPushButton, QListWidget, QCheckBox)
+from app.engine.pdf_utils import mm_to_pt
+from app.dialogs.format_combo import populate_format_combo, get_selected_size, handle_format_selection
 
 
 class ManualImposeDialog(QDialog):
@@ -19,53 +19,43 @@ class ManualImposeDialog(QDialog):
     def _setup_ui(self):
         layout = QVBoxLayout(self)
 
-        # Taille feuille
         grp_sheet = QGroupBox("Taille de la feuille cible")
         sl = QHBoxLayout(grp_sheet)
         sl.addWidget(QLabel("Format :"))
         self.combo_sheet = QComboBox()
-        for name in PAGE_SIZES:
-            self.combo_sheet.addItem(name)
-        self.combo_sheet.setCurrentText("A3 Paysage")
+        populate_format_combo(self.combo_sheet, "A3 Paysage")
+        self.combo_sheet.activated.connect(lambda: handle_format_selection(self.combo_sheet, self))
         sl.addWidget(self.combo_sheet)
         layout.addWidget(grp_sheet)
 
-        # Placement
         grp_place = QGroupBox("Placer une page")
         pl = QHBoxLayout(grp_place)
-
         pl.addWidget(QLabel("Page:"))
         self.spin_page = QSpinBox()
         self.spin_page.setRange(1, self._total_pages)
         pl.addWidget(self.spin_page)
-
         pl.addWidget(QLabel("X:"))
         self.spin_x = QDoubleSpinBox()
         self.spin_x.setRange(0, 2000)
         self.spin_x.setSuffix(" mm")
         pl.addWidget(self.spin_x)
-
         pl.addWidget(QLabel("Y:"))
         self.spin_y = QDoubleSpinBox()
         self.spin_y.setRange(0, 2000)
         self.spin_y.setSuffix(" mm")
         pl.addWidget(self.spin_y)
-
         pl.addWidget(QLabel("Rot:"))
         self.combo_rot = QComboBox()
         self.combo_rot.addItems(["0", "90", "180", "270"])
         pl.addWidget(self.combo_rot)
-
         pl.addWidget(QLabel("Ech:"))
         self.spin_scale = QDoubleSpinBox()
         self.spin_scale.setRange(0.1, 10.0)
         self.spin_scale.setValue(1.0)
         self.spin_scale.setSingleStep(0.1)
         pl.addWidget(self.spin_scale)
-
         layout.addWidget(grp_place)
 
-        # Boutons
         btn_layout = QHBoxLayout()
         btn_add = QPushButton("Ajouter")
         btn_add.clicked.connect(self._add_placement)
@@ -76,15 +66,12 @@ class ManualImposeDialog(QDialog):
         btn_layout.addStretch()
         layout.addLayout(btn_layout)
 
-        # Liste
         self.list_placements = QListWidget()
         layout.addWidget(self.list_placements)
 
-        # Crop marks
         self.chk_crop = QCheckBox("Reperes de coupe")
         layout.addWidget(self.chk_crop)
 
-        # Boutons OK/Annuler
         buttons = QDialogButtonBox(
             QDialogButtonBox.StandardButton.Ok | QDialogButtonBox.StandardButton.Cancel
         )
@@ -102,7 +89,7 @@ class ManualImposeDialog(QDialog):
         }
         self._placements.append(p)
         self.list_placements.addItem(
-            f"Page {p['page']} - X={self.spin_x.value():.1f} Y={self.spin_y.value():.1f} mm "
+            f"Page {p['page']} — X={self.spin_x.value():.1f} Y={self.spin_y.value():.1f} mm "
             f"Rot={self.combo_rot.currentText()} Ech={self.spin_scale.value():.1f}"
         )
 
@@ -113,10 +100,8 @@ class ManualImposeDialog(QDialog):
             self._placements.pop(row)
 
     def get_settings(self):
-        sheet_text = self.combo_sheet.currentText()
-        sheet_size = PAGE_SIZES[sheet_text]
         return {
-            "sheet_size": sheet_size,
+            "sheet_size": get_selected_size(self.combo_sheet),
             "placements": self._placements,
             "crop_marks": self.chk_crop.isChecked(),
         }