PNS: Actually implement the AbortRouting API

Fixes https://gitlab.com/kicad/code/kicad/-/issues/9425

pcbnew/router/pns_router.cpp

@@ -705,6 +705,15 @@ void ROUTER::CommitRouting()
 }
 
 
+void ROUTER::AbortRouting()
+{
+    if( m_state == ROUTE_TRACK )
+        m_placer->AbortPlacement();
+
+    StopRouting();
+}
+
+
 void ROUTER::StopRouting()
 {
     // Update the ratsnest with new changes

pcbnew/router/pns_router.h

@@ -148,6 +148,7 @@ public:
     void UndoLastSegment();
     void CommitRouting();
     void StopRouting();
+    void AbortRouting();
     void ClearViewDecorations();
 
     NODE* GetWorld() const { return m_world.get(); }

pcbnew/router/router_tool.cpp

@@ -1144,6 +1144,8 @@ void ROUTER_TOOL::performRouting()
     // Set initial cursor
     setCursor();
 
+    bool abortRouting = false;
+
     while( TOOL_EVENT* evt = Wait() )
     {
         setCursor();
@@ -1234,8 +1236,13 @@ void ROUTER_TOOL::performRouting()
                  || evt->IsUndoRedo()
                  || evt->IsAction( &PCB_ACTIONS::routerInlineDrag ) )
         {
-            if( evt->IsCancelInteractive() && !m_router->RoutingInProgress() )
-                m_cancelled = true;
+            if( evt->IsCancelInteractive() )
+            {
+                if( m_router->RoutingInProgress() )
+                    abortRouting = true;
+                else
+                    m_cancelled = true;
+            }
 
             if( evt->IsActivate() && !evt->IsMoveTool() )
                 m_cancelled = true;
@@ -1252,7 +1259,10 @@ void ROUTER_TOOL::performRouting()
         }
     }
 
-    m_router->CommitRouting();
+    if( abortRouting )
+        m_router->AbortRouting();
+    else
+        m_router->CommitRouting();
 
     finishInteractive();
 }