Auto-select last used tool for railroad

src/rail_gui.cpp

@@ -755,6 +755,16 @@ struct BuildRailToolbarWindow : Window {
 		DeleteWindowByClass(WC_BUILD_BRIDGE);
 	}
 
+	virtual void SelectLastTool()
+	{
+		// User misplaced something - activate last selected tool again
+		if (this->last_user_action == WIDGET_LIST_END)
+			return;
+		Point dummy = {0, 0};
+		this->RaiseWidget(this->last_user_action);
+		this->OnClick(dummy, this->last_user_action, 0);
+	}
+
 	virtual void OnPlacePresize(Point pt, TileIndex tile_from)
 	{
 		TileIndex tile_to = tile_from;

src/video/sdl_v.cpp

@@ -25,6 +25,7 @@
 #include "../fileio_func.h"
 #include "../settings_type.h"
 #include "../tilehighlight_func.h"
+#include "../viewport_func.h"
 #include "sdl_v.h"
 #include <SDL.h>
 #ifdef __ANDROID__
@@ -621,7 +622,7 @@ int VideoDriver_SDL::PollEvent()
 					// Two-finger click - hacky way to determine if the right mouse button is already pressed without processing the left button event
 					// Cancel whatewer action we were doing, to allow two finger scrolling
 					ResetObjectToPlace();
-					SelectLastTool();
+					ToolbarSelectLastTool();
 				}
 #endif
 			} else if (ev.button.button == SDL_BUTTON_RIGHT) {