(svn r21021) -Add [FS#4171]: Center industry gui and waypoint gui after resize (partly by Krille).

src/industry_gui.cpp

@@ -927,6 +927,8 @@ public:
 		if (this->viewport != NULL) {
 			NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(IVW_VIEWPORT);
 			nvp->UpdateViewportCoordinates(this);
+
+			ScrollWindowToTile(Industry::Get(this->window_number)->location.GetCenterTile(), this, true); // Re-center viewport.
 		}
 	}
 

src/waypoint_gui.cpp

@@ -127,6 +127,8 @@ public:
 			NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WAYPVW_VIEWPORT);
 			nvp->UpdateViewportCoordinates(this);
 			this->wp->UpdateVirtCoord();
+
+			ScrollWindowToTile(this->GetCenterTile(), this, true); // Re-center viewport.
 		}
 	}