import javafx.application.Application;
import javafx.geometry.Bounds;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.Region;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class ShapeAASettingLeak extends Application {
    static final double CELL_WIDTH = 100;
    static final double CELL_HEIGHT = 100;

    static final double AAedge = 0.8;
    static final double Rinset = 10;
    static final double RX = Rinset + AAedge;
    static final double RY = Rinset + AAedge;
    static final double RW = CELL_WIDTH - (Rinset + AAedge) * 2.0;
    static final double RH = CELL_HEIGHT - (Rinset + AAedge) * 2.0;

    @Override
    public void start(Stage stage) {
        Region regionaa = makeRegion(Color.GREEN);
        Region regionnonaa = makeRegion(Color.BLUE);

        Canvas cvaa = makeCanvas(Color.GREEN);
        Canvas cvnonaa = makeCanvas(Color.BLUE);

        Group root = new Group(wrapAA(regionaa, true, 0, 0),
                               wrapAA(regionnonaa, false, 0, CELL_HEIGHT),
                               wrapAA(cvaa, true, CELL_WIDTH*2, 0),
                               wrapAA(cvnonaa, false, CELL_WIDTH*2, CELL_HEIGHT));

        Scene scene = new Scene(root, 400, 200);
        stage.setScene(scene);
        stage.show();
    }

    Region makeRegion(Color c) {
        Region region = new Region();
        region.setBackground(new Background(new BackgroundFill(c, new CornerRadii(Rinset), new Insets(Rinset + AAedge))));
        region.setPrefWidth(CELL_WIDTH);
        region.setPrefHeight(CELL_HEIGHT);
        return region;
    }

    Canvas makeCanvas(Color c) {
        Canvas cv = new Canvas(CELL_WIDTH, CELL_HEIGHT);
        GraphicsContext gc = cv.getGraphicsContext2D();
        gc.setFill(c);
        gc.fillOval(RX, RY, RW, RH);
        return cv;
    }

    Node wrapAA(Node target, boolean isAA, double x, double y) {
        Rectangle rect = new Rectangle(RX, RY, RW, RH);
        rect.setFill(isAA ? Color.GREEN : Color.BLUE);
        rect.setSmooth(isAA);
        double rcx = RX + RW/2.0;
        double rcy = RY + RH/2.0;

        Text text = new Text(isAA ? "AA" : "nonAA");
        Bounds bb = text.getBoundsInParent();
        double tcx = (bb.getMinX() + bb.getMaxX()) / 2.0;
        double tcy = (bb.getMinY() + bb.getMaxY()) / 2.0;
        text.setTranslateX(rcx - tcx);
        text.setTranslateY(rcy - tcy);
        text.setFill(Color.WHITE);

        target.setTranslateX(CELL_WIDTH);

        Group g = new Group(rect, target, text);
        g.setTranslateX(x);
        g.setTranslateY(y);
        return g;
    }
}