Need to change pgm to add graphics to deskpane (desk) not the overlay panel

Question

Hello everybody.
I recently had help in adding graphics to my program and I unintentionally requested that my graphics be added to a overlay panel. After further development I realized that I actually need the graphics to be painted to jdeskpane DESK. I assume that by doing this that the graphics will remain where I placed them (relative to the associated frames) when the scrollbar is utilized.
This might be a simple question, but I am new to graphics. Once I have the answer, I will analyze it and educate my self further.
Thank you in advance,
BAJH
* Copyright (c) 2007 BAH
* All rights reserved.
package com.newsystem.common;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.beans.PropertyVetoException;
import javax.swing.*;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JList;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.UIManager;
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.InternalFrameListener;
public class A_Test_of_Frame_Connectors extends JDesktopPane {
     private static final long serialVersionUID = 1L;
     JDesktopPane desk;
     JScrollPane scrollpane;
     JInternalFrame iframe;
     JFrame frame;
     JList jList1;
     String currentframetitle;
     String currentframetip;
     String title;
     Integer maxwidth;
     Boolean definingsecondaryconnector;
     Boolean definingparentsecondaryconnector;
     Boolean definingchildsecondaryconnector;
     Rectangle secondaryparentrectangle;
     Rectangle secondarychildrectangle;
    double barb = 10.0;
    double phi = Math.toRadians(20.0);
    RenderingHints hints;
    Boolean drawline = false;
    Integer connectorcount;
    String[] connectiontype;
    String[] connectorparentframe;
    String[] connectorchildframe;
    JInternalFrame[] allframes;
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHints(hints);
        g2.setPaint(Color.blue);
        if (drawline){
              drawConnector(g2, secondaryparentrectangle, secondarychildrectangle);
    private void drawConnector(Graphics2D g2,Rectangle r1,Rectangle r2) {
        double dx = r2.getCenterX() - r1.getCenterX();
        double dy = r2.getCenterY() - r1.getCenterY();
        double theta = Math.atan2(dy, dx);
        Point2D.Double p1 = getIntersectionPoint(r1, theta);
        Point2D.Double p2 = getIntersectionPoint(r2, theta+Math.PI);
        Line2D.Double line = new Line2D.Double(p1, p2);
        drawArrowHeads(line, g2);
        g2.draw(line);
     public A_Test_of_Frame_Connectors(){
        hints = new RenderingHints(null);
        hints.put(RenderingHints.KEY_ANTIALIASING,
                  RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_STROKE_CONTROL,
                  RenderingHints.VALUE_STROKE_PURE);
          definingsecondaryconnector = false;
          frame = new JFrame("All Frames in a JDesktopPane Container");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          scrollpane = new JScrollPane(desk,
                    ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                    ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
          scrollpane.setPreferredSize(new java.awt.Dimension(9925, 9580));
          desk = new JDesktopPane();
          desk.setPreferredSize(new java.awt.Dimension(15000, 30000));
               int i = 5;
               for (int j = 1; j <= i; j++){
                    UIManager.getDefaults().put("InternalFrame.icon", "");
                         ListModel jList1Model =
                              new DefaultComboBoxModel(
                                        new String[] { "Item One" });
                         title = "Frame " + j;
                         jList1 = new JList();
                         jList1.setModel(jList1Model);
                    jList1.setBounds(1, 1, 45, 54);
                    jList1.setEnabled(false);
                    iframe = new JInternalFrame("Internal Frame: " + j, false, false, false, false);
                    iframe.setName(String.valueOf(j));
                    iframe.setTitle(title);
                    Integer titlewidth;
                    if (title.length() < 30){
                         titlewidth = 265;
                    else{
                         titlewidth = title.length()*8 + 20;
                    iframe.setBounds(j*20, j*20,titlewidth , j*18 + 35);
                    iframe.add(jList1);
                    iframe.addInternalFrameListener(new InternalFrameListener(){
                         public void internalFrameClosing(InternalFrameEvent e) {}
                         public void internalFrameClosed(InternalFrameEvent e) {}
                         public void internalFrameOpened(InternalFrameEvent e) {}
                         public void internalFrameIconified(InternalFrameEvent e) {}
                         public void internalFrameDeiconified(InternalFrameEvent e) {}
                         public void internalFrameActivated(InternalFrameEvent e) {
                              currentframetitle = e.getInternalFrame().getTitle();
                              currentframetip = e.getInternalFrame().getToolTipText();
                              // Connectors
                              if (definingsecondaryconnector.equals(true)){
                                   if (definingparentsecondaryconnector.equals(true)){
                                        // Build dummy rectangle for creating connector                         
                                        secondaryparentrectangle = new Rectangle(e.getInternalFrame().getBounds());
                                        System.out.println("f name - "+e.getInternalFrame().getName());
                                        definingparentsecondaryconnector = false;
                                        definingchildsecondaryconnector = true;
                                   } else {
                                   if (definingchildsecondaryconnector.equals(true)){
                                        // Build dummy rectangle for creating connector                         
                                        secondarychildrectangle = new Rectangle(e.getInternalFrame().getBounds());
                                        // draw connector
                                           drawline = true;
                                           repaint();
                                           definingchildsecondaryconnector = false;
                         public void internalFrameDeactivated(InternalFrameEvent e) {}
                    iframe.setToolTipText("Internal Frame :" + j);
                    iframe.setVisible(true);
                    desk.add(iframe);
          scrollpane.setViewportView(desk);
          JMenuBar menubar = new JMenuBar();
          JButton SecondaryConnector = new JButton("Secondary Connector");
          SecondaryConnector.addMouseListener(new java.awt.event.MouseAdapter() {
               public void mousePressed(java.awt.event.MouseEvent e) {
                    definingsecondaryconnector = true;
                    definingparentsecondaryconnector = true;
                    definingchildsecondaryconnector = false;                    
                    try {
                         desk.getSelectedFrame().setSelected(false);
                    } catch (PropertyVetoException e1) {
                         // TODO Auto-generated catch block
                         e1.printStackTrace();
          JPanel overlayPanel = new JPanel();
             OverlayLayout overlay = new OverlayLayout(overlayPanel);
             overlayPanel.setLayout(overlay);
             this.setOpaque(false);
             overlayPanel.add(this);
             overlayPanel.add(scrollpane);
          menubar.add(SecondaryConnector);
          frame.setJMenuBar(menubar);
//          frame.add(scrollpane);
          frame.add(overlayPanel);
          scrollpane.setVisible(true);
          frame.setSize(800,600);
          frame.setVisible(true);
    private Point2D.Double getIntersectionPoint(Rectangle r, double theta) {
        double cx = r.getCenterX();
        double cy = r.getCenterY();
        double w = r.getWidth()/2;
        double h = r.getHeight()/2;
        double radius = Point2D.distance(0,0,w,h);
        double x = cx + radius * Math.cos(theta);
        double y = cy + radius * Math.sin(theta);
        Point2D.Double p = new Point2D.Double();
        int outcode = r.outcode(x, y);
        switch(outcode) {
            case Rectangle2D.OUT_TOP:             // 2
                p.x = cx - h*((x - cx)/(y - cy));
                p.y = cy - h;
                break;
            case Rectangle2D.OUT_LEFT:            // 1
                p.x = cx - w;
                p.y = cy - w*((y - cy)/(x - cx));
                break;
            case Rectangle2D.OUT_BOTTOM:          // 8
                p.x = cx + h*((x - cx)/(y - cy));
                p.y = cy + h;
                break;
            case Rectangle2D.OUT_RIGHT:           // 4
                p.x = cx + w;
                p.y = cy + w*((y - cy)/(x - cx));
                break;
            default:
                System.out.println("Non-cardinal outcode: " + outcode);
        return p;
    private void drawArrowHeads(Line2D.Double line, Graphics2D g2) {
        double dy = line.getY2() - line.getY1();
        double dx = line.getX2() - line.getX1();
        double theta = Math.atan2(dy, dx);
        drawArrowHead(line.getP2(), theta, g2);
        drawArrowHead(line.getP1(), theta+Math.PI, g2);
    private void drawArrowHead(Point2D tip, double theta, Graphics2D g2) {
        double x = tip.getX() - barb * Math.cos(theta+phi);
        double y = tip.getY() - barb * Math.sin(theta+phi);
        g2.draw(new Line2D.Double(tip.getX(), tip.getY(), x, y));
        x = tip.getX() - barb * Math.cos(theta-phi);
        y = tip.getY() - barb * Math.sin(theta-phi);
        g2.draw(new Line2D.Double(tip.getX(), tip.getY(), x, y));
     public static void main(String[] args) {
          A_Test_of_Frame_Connectors d = new A_Test_of_Frame_Connectors();
}

Answer 1

Hello everybody.
I recently had help in adding graphics to my program and I unintentionally requested that my graphics be added to a overlay panel. After further development I realized that I actually need the graphics to be painted to jdeskpane DESK. I assume that by doing this that the graphics will remain where I placed them (relative to the associated frames) when the scrollbar is utilized.
This might be a simple question, but I am new to graphics. Once I have the answer, I will analyze it and educate my self further.
Thank you in advance,
BAJH
* Copyright (c) 2007 BAH
* All rights reserved.
package com.newsystem.common;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.beans.PropertyVetoException;
import javax.swing.*;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JList;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.UIManager;
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.InternalFrameListener;
public class A_Test_of_Frame_Connectors extends JDesktopPane {
     private static final long serialVersionUID = 1L;
     JDesktopPane desk;
     JScrollPane scrollpane;
     JInternalFrame iframe;
     JFrame frame;
     JList jList1;
     String currentframetitle;
     String currentframetip;
     String title;
     Integer maxwidth;
     Boolean definingsecondaryconnector;
     Boolean definingparentsecondaryconnector;
     Boolean definingchildsecondaryconnector;
     Rectangle secondaryparentrectangle;
     Rectangle secondarychildrectangle;
    double barb = 10.0;
    double phi = Math.toRadians(20.0);
    RenderingHints hints;
    Boolean drawline = false;
    Integer connectorcount;
    String[] connectiontype;
    String[] connectorparentframe;
    String[] connectorchildframe;
    JInternalFrame[] allframes;
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHints(hints);
        g2.setPaint(Color.blue);
        if (drawline){
              drawConnector(g2, secondaryparentrectangle, secondarychildrectangle);
    private void drawConnector(Graphics2D g2,Rectangle r1,Rectangle r2) {
        double dx = r2.getCenterX() - r1.getCenterX();
        double dy = r2.getCenterY() - r1.getCenterY();
        double theta = Math.atan2(dy, dx);
        Point2D.Double p1 = getIntersectionPoint(r1, theta);
        Point2D.Double p2 = getIntersectionPoint(r2, theta+Math.PI);
        Line2D.Double line = new Line2D.Double(p1, p2);
        drawArrowHeads(line, g2);
        g2.draw(line);
     public A_Test_of_Frame_Connectors(){
        hints = new RenderingHints(null);
        hints.put(RenderingHints.KEY_ANTIALIASING,
                  RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_STROKE_CONTROL,
                  RenderingHints.VALUE_STROKE_PURE);
          definingsecondaryconnector = false;
          frame = new JFrame("All Frames in a JDesktopPane Container");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          scrollpane = new JScrollPane(desk,
                    ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                    ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
          scrollpane.setPreferredSize(new java.awt.Dimension(9925, 9580));
          desk = new JDesktopPane();
          desk.setPreferredSize(new java.awt.Dimension(15000, 30000));
               int i = 5;
               for (int j = 1; j <= i; j++){
                    UIManager.getDefaults().put("InternalFrame.icon", "");
                         ListModel jList1Model =
                              new DefaultComboBoxModel(
                                        new String[] { "Item One" });
                         title = "Frame " + j;
                         jList1 = new JList();
                         jList1.setModel(jList1Model);
                    jList1.setBounds(1, 1, 45, 54);
                    jList1.setEnabled(false);
                    iframe = new JInternalFrame("Internal Frame: " + j, false, false, false, false);
                    iframe.setName(String.valueOf(j));
                    iframe.setTitle(title);
                    Integer titlewidth;
                    if (title.length() < 30){
                         titlewidth = 265;
                    else{
                         titlewidth = title.length()*8 + 20;
                    iframe.setBounds(j*20, j*20,titlewidth , j*18 + 35);
                    iframe.add(jList1);
                    iframe.addInternalFrameListener(new InternalFrameListener(){
                         public void internalFrameClosing(InternalFrameEvent e) {}
                         public void internalFrameClosed(InternalFrameEvent e) {}
                         public void internalFrameOpened(InternalFrameEvent e) {}
                         public void internalFrameIconified(InternalFrameEvent e) {}
                         public void internalFrameDeiconified(InternalFrameEvent e) {}
                         public void internalFrameActivated(InternalFrameEvent e) {
                              currentframetitle = e.getInternalFrame().getTitle();
                              currentframetip = e.getInternalFrame().getToolTipText();
                              // Connectors
                              if (definingsecondaryconnector.equals(true)){
                                   if (definingparentsecondaryconnector.equals(true)){
                                        // Build dummy rectangle for creating connector                         
                                        secondaryparentrectangle = new Rectangle(e.getInternalFrame().getBounds());
                                        System.out.println("f name - "+e.getInternalFrame().getName());
                                        definingparentsecondaryconnector = false;
                                        definingchildsecondaryconnector = true;
                                   } else {
                                   if (definingchildsecondaryconnector.equals(true)){
                                        // Build dummy rectangle for creating connector                         
                                        secondarychildrectangle = new Rectangle(e.getInternalFrame().getBounds());
                                        // draw connector
                                           drawline = true;
                                           repaint();
                                           definingchildsecondaryconnector = false;
                         public void internalFrameDeactivated(InternalFrameEvent e) {}
                    iframe.setToolTipText("Internal Frame :" + j);
                    iframe.setVisible(true);
                    desk.add(iframe);
          scrollpane.setViewportView(desk);
          JMenuBar menubar = new JMenuBar();
          JButton SecondaryConnector = new JButton("Secondary Connector");
          SecondaryConnector.addMouseListener(new java.awt.event.MouseAdapter() {
               public void mousePressed(java.awt.event.MouseEvent e) {
                    definingsecondaryconnector = true;
                    definingparentsecondaryconnector = true;
                    definingchildsecondaryconnector = false;                    
                    try {
                         desk.getSelectedFrame().setSelected(false);
                    } catch (PropertyVetoException e1) {
                         // TODO Auto-generated catch block
                         e1.printStackTrace();
          JPanel overlayPanel = new JPanel();
             OverlayLayout overlay = new OverlayLayout(overlayPanel);
             overlayPanel.setLayout(overlay);
             this.setOpaque(false);
             overlayPanel.add(this);
             overlayPanel.add(scrollpane);
          menubar.add(SecondaryConnector);
          frame.setJMenuBar(menubar);
//          frame.add(scrollpane);
          frame.add(overlayPanel);
          scrollpane.setVisible(true);
          frame.setSize(800,600);
          frame.setVisible(true);
    private Point2D.Double getIntersectionPoint(Rectangle r, double theta) {
        double cx = r.getCenterX();
        double cy = r.getCenterY();
        double w = r.getWidth()/2;
        double h = r.getHeight()/2;
        double radius = Point2D.distance(0,0,w,h);
        double x = cx + radius * Math.cos(theta);
        double y = cy + radius * Math.sin(theta);
        Point2D.Double p = new Point2D.Double();
        int outcode = r.outcode(x, y);
        switch(outcode) {
            case Rectangle2D.OUT_TOP:             // 2
                p.x = cx - h*((x - cx)/(y - cy));
                p.y = cy - h;
                break;
            case Rectangle2D.OUT_LEFT:            // 1
                p.x = cx - w;
                p.y = cy - w*((y - cy)/(x - cx));
                break;
            case Rectangle2D.OUT_BOTTOM:          // 8
                p.x = cx + h*((x - cx)/(y - cy));
                p.y = cy + h;
                break;
            case Rectangle2D.OUT_RIGHT:           // 4
                p.x = cx + w;
                p.y = cy + w*((y - cy)/(x - cx));
                break;
            default:
                System.out.println("Non-cardinal outcode: " + outcode);
        return p;
    private void drawArrowHeads(Line2D.Double line, Graphics2D g2) {
        double dy = line.getY2() - line.getY1();
        double dx = line.getX2() - line.getX1();
        double theta = Math.atan2(dy, dx);
        drawArrowHead(line.getP2(), theta, g2);
        drawArrowHead(line.getP1(), theta+Math.PI, g2);
    private void drawArrowHead(Point2D tip, double theta, Graphics2D g2) {
        double x = tip.getX() - barb * Math.cos(theta+phi);
        double y = tip.getY() - barb * Math.sin(theta+phi);
        g2.draw(new Line2D.Double(tip.getX(), tip.getY(), x, y));
        x = tip.getX() - barb * Math.cos(theta-phi);
        y = tip.getY() - barb * Math.sin(theta-phi);
        g2.draw(new Line2D.Double(tip.getX(), tip.getY(), x, y));
     public static void main(String[] args) {
          A_Test_of_Frame_Connectors d = new A_Test_of_Frame_Connectors();
}