//LossyLinePanel.java /* A Java class for * LossyWide.java * Electromagnetic Transmission Line Applet * Applet without Smith Chart - Prepared by Umberto Ravaioli * for 6th edition of Fundamentals of Applied Electromagnetics Book * May 2009 - All Rights Reserved */ import java.awt.*; import java.awt.event.*; public class LossyLinePanel extends Panel implements ActionListener,ItemListener{ //protected static final Color bgcolor = Color.lightGray; protected static final Color labcolor = Color.red; //protected static final Font labfont=new Font("SanSerif",Font.PLAIN,12); //protected static final Font titlefont=new Font("SanSerif",Font.BOLD,16); public static Font labfont; public static Font titlefont; private static final Label titlelabel=new Label("Set Line ",Label.CENTER); private static final Label lengthlabel=new Label("Length units:",Label.RIGHT); public boolean Is_Wavelength; private Font newfont3, newfont4, newfont5; private static final Color bgcolor = new Color(236,236,236); private static final Color tinta = new Color(236,236,236); //Checkbox c1, c2; Checkbox c3, c4; //CheckboxGroup cgrp; CheckboxGroup cgrp2; //These are the panels with inputs // lossless and low-loss PR lowpanel; // general lossy line PR2 highpanel; Trans_State state; TransSlidePanel slidepanel; //String arg1A[]={"Char. Imp. Zo = ","Attenuation \u03b1 = ", // "Frequency f = ","Rel. Permittivity \u03b5 = ","Total Length L = "}; //String arg2A[]={" \u03a9"," Ne/\u03bb"," Hz",""," \u03bb"}; // String arg1A[]={"Char. Imp. Zo = ", "Frequency f = ","Rel. Permittivity \u03b5 = ","Total Length L = "}; String arg2A[]={"[ \u03a9 ]","[ Hz ]","","[ \u03bb ]"}; String arg1B[]={"Resistance R = ","Inductance L = ","Conductance G = ","Capacitance C = ", "Frequency f = ","Total Length L = "}; String arg2B[]={" \u03a9/m"," \u00b5H/m"," S/m"," pF/m"," Hz"," \u03bb"}; CircuitCanvas ccan; public LossyLinePanel(Trans_State state){ setBackground(bgcolor); this.state = state; setLayout(null); newfont3 = new Font("SanSerif",Font.BOLD,state.font12); newfont4 = new Font("SanSerif",Font.PLAIN,state.font11); newfont5 = new Font("Serif",Font.PLAIN,state.font13); add(titlelabel); add(lengthlabel); titlelabel.setBounds(state.s5,state.s5,state.s85,state.s20); titlelabel.setFont(newfont3); lengthlabel.setBounds(state.s35,state.s26,state.s90,state.s20); lengthlabel.setFont(newfont4); //cgrp = new CheckboxGroup(); cgrp2 = new CheckboxGroup(); //c1 = new Checkbox("Low Loss",cgrp,true); //c2 = new Checkbox("General",cgrp,false); c3 = new Checkbox("[ \u03bb ]",cgrp2,true); c4 = new Checkbox("[ m ]",cgrp2,false); Is_Wavelength = true; //c1.setFont(labfont); c2.setFont(labfont); c3.setFont(newfont5); c4.setFont(newfont4); //c1.setBackground(bgcolor); //c2.setBackground(bgcolor); c3.setBackground(bgcolor); c4.setBackground(bgcolor); //add(c1); //add(c2); add(c3); add(c4); //c1.setBounds(135,6,80,20); //c2.setBounds(220,6,70,20); c3.setBounds(state.s135,state.s26,state.s60,state.s20); c4.setBounds(state.s220,state.s26,state.s60,state.s20); { lowpanel = new PR("Lossless Approximation",arg1A,arg2A, state); add(lowpanel); lowpanel.setBackground(new Color(240,240,230)); lowpanel.setBounds(state.s7,state.s50,state.s280,state.s225); /* lowpanel.setValue(state.Z0.Real(),0);//characteristic impedance lowpanel.setValue(state.alpha,1);//alpha attenuation constant lowpanel.setValue(state.frequency,2);//frequency lowpanel.setValue(state.epsilon_r,3);//relative dielectric constant lowpanel.setValue(state.lineLength,4);//total length */ // JAN'S Changes: lowpanel.setValue(state.Z0.Real(),0);//characteristic impedance lowpanel.setValue(state.frequency,1);//frequency lowpanel.setValue(state.epsilon_r,2);//relative dielectric constant lowpanel.setValue(state.lineLength,3);//total length // END JAN'S changes } { highpanel = new PR2("General Lossy Line",arg1B,arg2B, state); add(highpanel); highpanel.setBackground(new Color(240,240,230)); highpanel.setBounds(state.s7,state.s50,state.s280,state.s225); highpanel.setVisible(false); highpanel.setValue(state.R,0);//resistance highpanel.setValue(state.L,1);//inductance highpanel.setValue(state.G,2);//conductance highpanel.setValue(state.C,3);//capacitance highpanel.setValue(state.frequency,4);//frequency highpanel.setValue(state.lineLength,5);//total length } //Listeners //c1.addItemListener(this); //c2.addItemListener(this); c3.addItemListener(this); c4.addItemListener(this); lowpanel.b1.addActionListener(this); highpanel.b1.addActionListener(this); lowpanel.b1.setBackground(Color.white); highpanel.b1.setBackground(Color.white); } public void paint(Graphics g){ FontMetrics fm; String alpha, Ohm, lambda, infinity, Gamma; alpha="\u03b1"; lambda="\u03bb"; Ohm="\u03a9"; infinity="\u221e"; Gamma="\u0393"; g.clearRect(0,0,getSize().width,getSize().height); g.setColor(bgcolor.darker()); g.fillRect(0,getSize().height-2,getSize().width,2); g.fillRect(getSize().width-2,0,2,getSize().height); g.setColor(bgcolor.brighter()); g.fillRect(0,0,2,getSize().height-1); g.fillRect(0,0,getSize().width-2,2); } public void itemStateChanged(ItemEvent evt){ //if(evt.getSource() == c1){ // lowpanel.setVisible(true); // highpanel.setVisible(false); //} //else if (evt.getSource() ==c2){ // lowpanel.setVisible(false); // highpanel.setVisible(true); //} //else if (evt.getSource() ==c3){ if (evt.getSource() ==c3){ Is_Wavelength = true; //arg2A[4] = " [ \u03bb ] "; arg2A[3] = " [ \u03bb ] "; //arg2A[1] = " [ Ne / \u03bb ]"; lowpanel.setStrings(arg1A,arg2A); arg2B[5] = " [ \u03bb ] "; highpanel.setStrings(arg1B,arg2B); } else if (evt.getSource() ==c4){ Is_Wavelength = false; //arg2A[4] = " [ m ] "; arg2A[3] = " [ m ] "; //arg2A[1] = " [ Ne / m ]"; lowpanel.setStrings(arg1A,arg2A); arg2B[5] = " [ m ] "; highpanel.setStrings(arg1B,arg2B); } } public void actionPerformed(ActionEvent evt){ double tempalpha; /* if(evt.getSource() == lowpanel.b1){ state.Z0 = new Complex(lowpanel.getValue(0),0.0); state.alpha = lowpanel.getValue(1); state.frequency = lowpanel.getValue(2); state.epsilon_r = lowpanel.getValue(3); state.lineLength = lowpanel.getValue(4); } else if(evt.getSource() == highpanel.b1){ if(highpanel.getValue(0) < 0.0){ state.R = 0.0; highpanel.setValue(0.0,0); } else{ state.R = highpanel.getValue(0); } if(highpanel.getValue(1) < 0.0){ state.L = 0.0; highpanel.setValue(0.0,1); } else{ state.L = highpanel.getValue(1); } if(highpanel.getValue(2) < 0.0){ state.G = 0.0; highpanel.setValue(0.0,2); } else{ state.G = highpanel.getValue(2); } if(highpanel.getValue(3) < 0.0){ state.C = 0.0; highpanel.setValue(0.0,3); } else{ state.C = highpanel.getValue(3); } state.frequency = highpanel.getValue(4); state.lineLength = highpanel.getValue(5); }*/ } }