Hi,
what's wrong with this code? It aborts with StackOverflowError.
Comment-out the marked line to run without error.

Greetings, ratlan

package experimentscene;
 
import javafx.ext.swing.SwingButton;
import javafx.scene.Group;
import javafx.scene.paint.Color;
import javafx.scene.Scene;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
 
var g1:Group;
var scene1 : Scene = Scene
    {
    content: [
        g1 = Group {
            content: [
                Rectangle {
                    fill:Color.BLUE
                    arcHeight:10;
                    arcWidth:10;
                    strokeWidth:2;
                    stroke: Color.RED;   // <-- comment-out this line to avoid error
                    width: bind g1.layoutBounds.width
                    height: bind g1.layoutBounds.height
                },
                SwingButton {
                    translateX:10;
                    text:"btn";
                }
            ]}
    ]
}
 
Stage {
    width: 250
    height: 80
    scene:bind scene1
}

 

 

Hi Ratlan,
I think the stack overflow is caused by binding the width of the rectangle to the width of the group. But the width of the group is determined by the width of its children, which includes the rectangle. I don't know why it works when you comment out the Stroke line. Try setting the width to hard-coded values and putting the Stroke back in just to see what happens.

If you're trying to achieve the effect where the rectangle is the same size as the stage/scene, then you should bind the rectangle width to scene.width.

HTH,
Kevin

 

 

Good catch stemkev.
I think I know why the stroke color changes the behavior: without it, the rectangle is exactly of the size of the Group, so no positive feed-back inducing the (almost) infinite loop. By specifying a color, the shape is widened by 1 pixel, 3 if strokeWidth is 2, etc. -- width seems to be around the shape frontier!