Example usage for javax.swing JScrollPane setComponentZOrder

Introduction

In this page you can find the example usage for javax.swing JScrollPane setComponentZOrder.

Prototype

public void setComponentZOrder(Component comp, int index) 

Source Link

Document

Moves the specified component to the specified z-order index in the container.

Usage

From source file:Main.java

public static void main(String[] args) {
    JTextArea cmp = new JTextArea();
    String str = "a";
    for (int i = 0; i < 20; i++) {
        cmp.append(str + str + "\n");
    }/* w w  w  .j  av a 2 s. c  o  m*/
    JScrollPane scrollPane = new JScrollPane(cmp);
    scrollPane.setComponentZOrder(scrollPane.getVerticalScrollBar(), 0);
    scrollPane.setComponentZOrder(scrollPane.getViewport(), 1);
    scrollPane.getVerticalScrollBar().setOpaque(false);

    scrollPane.setLayout(new ScrollPaneLayout() {
        @Override
        public void layoutContainer(Container parent) {
            JScrollPane scrollPane = (JScrollPane) parent;

            Rectangle availR = scrollPane.getBounds();
            availR.x = availR.y = 0;

            Insets parentInsets = parent.getInsets();
            availR.x = parentInsets.left;
            availR.y = parentInsets.top;
            availR.width -= parentInsets.left + parentInsets.right;
            availR.height -= parentInsets.top + parentInsets.bottom;

            Rectangle vsbR = new Rectangle();
            vsbR.width = 12;
            vsbR.height = availR.height;
            vsbR.x = availR.x + availR.width - vsbR.width;
            vsbR.y = availR.y;

            if (viewport != null) {
                viewport.setBounds(availR);
            }
            if (vsb != null) {
                vsb.setVisible(true);
                vsb.setBounds(vsbR);
            }
        }
    });
    scrollPane.getVerticalScrollBar().setUI(new MyScrollBarUI());

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    f.getContentPane().add(scrollPane);
    f.setSize(320, 240);
    f.setVisible(true);
}

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