child z ordering

[James Dunsdon]

Hi,

I'm wondering if there is any consideration towards being able to modify 
child Z ordering. Currently it only seems based on add order. There are 
a few use cases where slight overlapping might be desired in which case 
z ordering should be independently controllable of layout order. 
toFront(), toBack() only seem to work with Groups. I've given a code 
example of a use case below. My current workaround is to use rotations 
to created the desired effect.


import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class Main extends Application {

     @Override
     public void start(Stage primaryStage) throws Exception{
         Parent root = new VBox(createDefaultBehavior(), 
createPreferredBehavior());
         primaryStage.setTitle("Hello World");
         primaryStage.setScene(new Scene(root, 300, 275));
         primaryStage.show();
     }

     private Node createDefaultBehavior(){
         HBox box = new HBox(createCircle(), createRectangle());
         box.setAlignment(Pos.CENTER_LEFT);
         box.setSpacing(-10);
         return box;
     }

     /*
     in this case since we are using symmetric shapes the node rotations 
are unnecessary,
     however they would be required for most content
      */
     private Node createPreferredBehavior(){
         Node circle = createCircle();
         circle.setRotate(-180);
         Node rectangle = createRectangle();
         rectangle.setRotate(-180);
         HBox box = new HBox(rectangle, circle);
         box.setAlignment(Pos.CENTER_RIGHT);
         box.setRotate(180);
         box.setSpacing(-10);
         return box;
     }

     private Node createCircle(){
         Circle circle = new Circle(30, Color.RED);
         circle.setStroke(Color.GOLDENROD);
         circle.setStrokeWidth(4.0);
         return circle;
     }

     private Node createRectangle(){
         Rectangle rectangle = new Rectangle(100, 40, Color.GREEN);
         rectangle.setStroke(Color.GOLDENROD);
         rectangle.setStrokeWidth(4.0);
         return rectangle;
     }


     public static void main(String[] args) {
         launch(args);
     }
}


Thanks,

James Dunsdon

(nervous first time poster)