Example usage for javax.swing JScrollPane setViewport

Introduction

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

Prototype

@BeanProperty(expert = true, visualUpdate = true, description = "The viewport child for this scrollpane")
public void setViewport(JViewport viewport) 

Source Link

Document

Removes the old viewport (if there is one); forces the viewPosition of the new viewport to be in the +x,+y quadrant; syncs up the row and column headers (if there are any) with the new viewport; and finally syncs the scrollbars and headers with the new viewport.

Usage

From source file:Main.java

public static void main(String[] args) {
    JTextArea textArea = new JTextArea(5, 30);
    textArea.setOpaque(false);/*  www . j  av a  2s .  c om*/

    JViewport viewport = new JViewport() {
        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            int w = this.getWidth();
            int h = this.getHeight();
            g.setColor(Color.RED);
            g.fillRect(0, 0, w / 2, h / 2);
        }
    };

    JScrollPane scrollPane = new JScrollPane();
    scrollPane.setViewport(viewport);
    scrollPane.setViewportView(textArea);

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(scrollPane);
    frame.setLocationByPlatform(true);
    frame.pack();
    frame.setVisible(true);
}

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From source file:ScrollPaneWatermark.java

public static void main(String[] args) throws Exception {
    JFrame frame = new JFrame();

    JTextArea ta = new JTextArea();
    for (int i = 0; i < 1000; i++) {
        ta.append(Integer.toString(i) + "  ");
    }//from   ww  w . ja  va 2s  .  c o m

    ta.setLineWrap(true);
    ta.setWrapStyleWord(true);
    // ta.setOpaque(false);

    ScrollPaneWatermark watermark = new ScrollPaneWatermark();
    watermark.setBackgroundTexture(new File("background.jpg").toURL());
    watermark.setForegroundBadge(new File("foreground.png").toURL());
    watermark.setView(ta);

    JScrollPane scroll = new JScrollPane();
    scroll.setViewport(watermark);

    frame.getContentPane().add(scroll);
    frame.pack();
    frame.setSize(600, 600);
    frame.setVisible(true);
}

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From source file:Main.java

public Main() {
    JViewport viewport = new MyViewport();
    viewport.setView(new MyPanel());
    JScrollPane scrollPane = new JScrollPane();
    scrollPane.setViewport(viewport);
    add(scrollPane);//from www. j  a v  a  2s  . c  o m
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    pack();
    setVisible(true);
}

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From source file:Main.java

MyPanel() {
    JScrollPane scrollpane = new JScrollPane();
    scrollpane.setViewport(viewport);
    viewport.add(innerPanel);//from ww w  .j a v  a 2 s.c o m
    scrollpane.setPreferredSize(SCROLLPANE_SIZE);
    viewport.addChangeListener(e -> {
        Rectangle viewRect = viewport.getViewRect();
        if (viewRect.intersects(RECT)) {
            statusLabel.setText(VISIBLE);
        } else {
            statusLabel.setText(NOT_VISIBLE);
        }
    });

    setLayout(new BorderLayout());
    add(scrollpane, BorderLayout.CENTER);
    add(statusLabel, BorderLayout.SOUTH);
}

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From source file:JavaXWin.java

public JavaXWin() {
    setTitle("JavaXWin");
    m_count = m_tencount = 0;/*from   ww w.  j ava2 s. c  om*/
    m_desktop = new JDesktopPane();

    JScrollPane scroller = new JScrollPane();
    m_wm = new WindowManager(m_desktop);
    m_desktop.setDesktopManager(m_wm);
    m_desktop.add(m_wm.getWindowWatcher(), JLayeredPane.PALETTE_LAYER);
    m_wm.getWindowWatcher().setBounds(555, 5, 200, 150);

    viewport = new JViewport() {
        public void setViewPosition(Point p) {
            super.setViewPosition(p);
            m_wm.getWindowWatcher().setLocation(m_wm.getWindowWatcher().getX() + (getViewPosition().x - m_wmX),
                    m_wm.getWindowWatcher().getY() + (getViewPosition().y - m_wmY));
            m_wmX = getViewPosition().x;
            m_wmY = getViewPosition().y;
        }
    };
    viewport.setView(m_desktop);
    scroller.setViewport(viewport);

    ComponentAdapter ca = new ComponentAdapter() {
        JViewport view = viewport;

        public void componentResized(ComponentEvent e) {
            m_wm.getWindowWatcher().setLocation(
                    view.getViewPosition().x + view.getWidth() - m_wm.getWindowWatcher().getWidth() - 15,
                    view.getViewPosition().y + 5);
        }
    };
    viewport.addComponentListener(ca);

    m_newFrame = new JButton("New Frame");
    m_newFrame.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            newFrame();
        }
    });

    JPanel topPanel = new JPanel(true);
    topPanel.setLayout(new FlowLayout());

    getContentPane().setLayout(new BorderLayout());
    getContentPane().add("North", topPanel);
    getContentPane().add("Center", scroller);

    topPanel.add(m_newFrame);

    Dimension dim = getToolkit().getScreenSize();
    setSize(800, 600);
    setLocation(dim.width / 2 - getWidth() / 2, dim.height / 2 - getHeight() / 2);
    m_desktop.setPreferredSize(new Dimension(1600, 1200));
    setVisible(true);
    WindowListener l = new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    };
    addWindowListener(l);
}

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