Add Page Editor toolbar toggles and widen the default window

Edit mode, snap to grid and the widgets/properties pane are now toggles on
the main toolbar while the Page Editor is open. Outside edit mode the page
and the property sheet are read-only; drags snap to the 10px grid when
snapping is on. The default window grows by the right pane's width so the
canvas is not squeezed when the pane shows.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

main.py

@@ -70,6 +70,9 @@ PALETTE_REQUESTED_ROWS = 5
 # Below this the shortfall is deep enough to shrink the tree past a usable few rows, and
 # ttk has no way to hold a pane at a floor once the room is simply not there.
 MIN_WINDOW_HEIGHT = 300
+# The editor itself, plus room for the Page Editor's widgets/properties pane.
+DEFAULT_WINDOW_WIDTH = 880 + ox_page_view.RIGHT_PANE_WIDTH
+DEFAULT_WINDOW_HEIGHT = 600
 
 # How many visited views Back and Forward can walk through. A session touches few of
 # them; the cap only stops an unbounded list.
@@ -368,11 +371,34 @@ def show_ox_page_view(comp):
         on_close=dismiss_ox_page_view,
     )
     ox_page_panel.frame.pack(fill=tk.BOTH, expand=True)
+    _show_page_editor_tools(ox_page_panel)
     record_visit(VIEW_PAGE, comp)
     update_zoom_label()
     app_state.set_status(f"Page Editor: {comp.get('name', '?')}")
 
 
+def _show_page_editor_tools(panel):
+    """Lays the Page Editor's toggles out on the toolbar, after a separator of their own."""
+    _hide_page_editor_tools()
+    ttk.Separator(page_editor_tools, orient=tk.VERTICAL).pack(
+        side=tk.LEFT, fill=tk.Y, padx=8, pady=2)
+    for index, (icon, tip, variable, command) in enumerate(panel.toolbar_tools()):
+        if variable is not None:
+            button = ttk.Checkbutton(page_editor_tools, text=icon, width=3,
+                                     style="Toolbutton", variable=variable, command=command)
+        else:
+            button = ttk.Button(page_editor_tools, text=icon, width=3, command=command)
+        button.pack(side=tk.LEFT, padx=(3 if index else 0, 0))
+        _ToolTip(button, tip)
+    page_editor_tools.pack(side=tk.LEFT)
+
+
+def _hide_page_editor_tools():
+    for child in page_editor_tools.winfo_children():
+        child.destroy()
+    page_editor_tools.pack_forget()
+
+
 def dismiss_ox_page_view(restore_canvas=True):
     """Takes the OxPage editor down and gives the pane back."""
     global ox_page_panel
@@ -381,6 +407,7 @@ def dismiss_ox_page_view(restore_canvas=True):
 
     ox_page_panel.destroy()
     ox_page_panel = None
+    _hide_page_editor_tools()
     update_zoom_label()
 
     if restore_canvas:
@@ -2386,7 +2413,7 @@ def _live_tree_expand(comp_id, tree_item_id):
 window = tk.Tk()
 app_state.window = window
 window.title(app_state.base_window_title())
-window.geometry("950x600")
+window.geometry(f"{DEFAULT_WINDOW_WIDTH}x{DEFAULT_WINDOW_HEIGHT}")
 # Width is left alone; only the height needs a floor, to keep the tree pane off zero.
 window.minsize(1, MIN_WINDOW_HEIGHT)
 
@@ -2588,6 +2615,9 @@ _btn_print = ttk.Button(toolbar, text="🖨", width=3, command=wiresheet.print_s
 _btn_print.pack(side=tk.LEFT)
 _ToolTip(_btn_print, "Print Wiresheet (Ctrl+P)")
 
+# Filled with the Page Editor's own tools while it is open, and empty (unpacked) otherwise.
+page_editor_tools = ttk.Frame(toolbar)
+
 paned_window = ttk.PanedWindow(window, orient=tk.HORIZONTAL)
 paned_window.pack(fill=tk.BOTH, expand=True, padx=5, pady=5)