Fix a few (minor) issues:

- Make DIALOG_SHIM::SetPosition working)
- rename PCB_BASE_FRAME::SelectLayer() to PCB_BASE_FRAME::SelectOneLayer()
- PCB_BASE_FRAME::SelectOneLayer(): make dismiss dialog by escape key working.
Fixes #7578
https://gitlab.com/kicad/code/kicad/issues/7578

common/dialog_shim.cpp

@@ -183,6 +183,36 @@ int DIALOG_SHIM::vertPixelsFromDU( int y ) const
 
 static RECT_MAP class_map;
 
+
+void DIALOG_SHIM::SetPosition( const wxPoint& aNewPosition )
+{
+    wxDialog::SetPosition( aNewPosition );
+
+    // Now update the stored position:
+    const char* hash_key;
+
+    if( m_hash_key.size() )
+    {
+        // a special case like EDA_LIST_DIALOG, which has multiple uses.
+        hash_key = m_hash_key.c_str();
+    }
+    else
+    {
+        hash_key = typeid(*this).name();
+    }
+
+    RECT_MAP::iterator it = class_map.find( hash_key );
+
+    if( it == class_map.end() )
+        return;
+
+    EDA_RECT rect = it->second;
+    rect.SetOrigin( aNewPosition );
+
+    class_map[ hash_key ] = rect;
+}
+
+
 bool DIALOG_SHIM::Show( bool show )
 {
     bool        ret;

include/dialog_shim.h

@@ -112,6 +112,11 @@ public:
 
     void OnPaint( wxPaintEvent &event );
 
+    /** Force the position of the dialog to a new position
+     * @param aNewPosition is the new forced position
+     */
+    void SetPosition( const wxPoint& aNewPosition );
+
     EDA_UNITS GetUserUnits() const
     {
         return m_units;

include/pcb_base_frame.h

@@ -328,16 +328,16 @@ public:
 
 
     /**
-     * Show the dialog box for layer selection.
+     * Show the dialog box for a layer selection.
      *
-     * @param aDefaultLayer is the default layer to select.  Use #NB_PCB_LAYERS if no selection
+     * @param aDefaultLayer is the default layer to select.  Use UNDEFINED_LAYER if no selection
      *                      is desired.
      * @param aNotAllowedLayersMask is a layer mask for not allowed layers.  Use 0 to show all
      *                              layers in use.
      * @param aDlgPosition is the position of dialog (default is centered).
      * @return the selected layer id.
      */
-    PCB_LAYER_ID SelectLayer( PCB_LAYER_ID aDefaultLayer, LSET aNotAllowedLayersMask = LSET(),
+    PCB_LAYER_ID SelectOneLayer( PCB_LAYER_ID aDefaultLayer, LSET aNotAllowedLayersMask = LSET(),
                               wxPoint aDlgPosition = wxDefaultPosition );
 
     virtual void SwitchLayer( wxDC* DC, PCB_LAYER_ID layer );

pcbnew/router/router_tool.cpp

@@ -753,9 +753,7 @@ int ROUTER_TOOL::handleLayerSwitch( const TOOL_EVENT& aEvent, bool aForceVia )
             wxPoint endPoint = (wxPoint) view()->ToScreen( m_endSnapPoint );
             endPoint = frame()->GetCanvas()->ClientToScreen( endPoint );
 
-            controls()->WarpCursor( endPoint );
+            targetLayer = frame()->SelectOneLayer( static_cast<PCB_LAYER_ID>( currentLayer ),
-
-            targetLayer = frame()->SelectLayer( static_cast<PCB_LAYER_ID>( currentLayer ),
                                                    LSET::AllNonCuMask(), endPoint );
 
             // Reset the cursor to the end of the track

pcbnew/sel_layer.cpp

@@ -89,6 +89,7 @@ class PCB_ONE_LAYER_SELECTOR : public PCB_LAYER_SELECTOR,
 public:
     PCB_ONE_LAYER_SELECTOR( PCB_BASE_FRAME* aParent, BOARD * aBrd, PCB_LAYER_ID aDefaultLayer,
                             LSET aNotAllowedLayersMask );
+    ~PCB_ONE_LAYER_SELECTOR();
 
     LAYER_NUM GetLayerSelection()   { return m_layerSelected; }
 
@@ -97,6 +98,9 @@ private:
     void OnLeftGridCellClick( wxGridEvent& event ) override;
     void OnRightGridCellClick( wxGridEvent& event ) override;
 
+    // Will close the dialog on ESC key
+    void onCharHook( wxKeyEvent& event );
+
     void buildList();
 };
 
@@ -119,12 +123,27 @@ PCB_ONE_LAYER_SELECTOR::PCB_ONE_LAYER_SELECTOR( PCB_BASE_FRAME* aParent, BOARD*
     m_rightGridLayers->SetColFormatBool( SELECT_COLNUM );
     buildList();
 
+    Connect( wxEVT_CHAR_HOOK, wxKeyEventHandler( PCB_ONE_LAYER_SELECTOR::onCharHook ) );
+
     Layout();
     GetSizer()->SetSizeHints( this );
     SetFocus();
 }
 
 
+PCB_ONE_LAYER_SELECTOR::~PCB_ONE_LAYER_SELECTOR()
+{
+    Disconnect( wxEVT_CHAR_HOOK, wxKeyEventHandler( PCB_ONE_LAYER_SELECTOR::onCharHook ) );
+}
+
+
+void PCB_ONE_LAYER_SELECTOR::onCharHook( wxKeyEvent& event )
+{
+    if( event.GetKeyCode() == WXK_ESCAPE )
+        Close();
+}
+
+
 void PCB_ONE_LAYER_SELECTOR::buildList()
 {
     wxColour bg = getLayerColor( LAYER_PCB_BACKGROUND ).ToColour();
@@ -203,7 +222,8 @@ void PCB_ONE_LAYER_SELECTOR::OnRightGridCellClick( wxGridEvent& event )
 }
 
 
-PCB_LAYER_ID PCB_BASE_FRAME::SelectLayer( PCB_LAYER_ID aDefaultLayer, LSET aNotAllowedLayersMask,
+PCB_LAYER_ID PCB_BASE_FRAME::SelectOneLayer( PCB_LAYER_ID aDefaultLayer,
+                                             LSET aNotAllowedLayersMask,
                                              wxPoint aDlgPosition )
 {
     PCB_ONE_LAYER_SELECTOR dlg( this, GetBoard(), aDefaultLayer, aNotAllowedLayersMask );

pcbnew/tools/convert_tool.cpp

@@ -537,7 +537,7 @@ int CONVERT_TOOL::PolyToLines( const TOOL_EVENT& aEvent )
             BOARD_ITEM_CONTAINER* parent = frame->GetModel();
 
             if( !IsCopperLayer( layer ) )
-                layer = frame->SelectLayer( F_Cu, LSET::AllNonCuMask() );
+                layer = frame->SelectOneLayer( F_Cu, LSET::AllNonCuMask() );
 
             // I am really unsure converting a polygon to "tracks" (i.e. segments on
             // copper layers) make sense for footprints, but anyway this code exists