// About.java /* A Java class for * LineImpedance.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.io.*; import java.applet.*; import java.awt.*; import java.awt.geom.*; import java.awt.image.*; import java.awt.event.*; import java.awt.font.*; import java.net.URL; import java.text.*; import java.util.*; import java.util.Map; import java.util.Hashtable; import java.util.jar.Attributes; public class Instructions extends Panel { //private static final Color bgcolor = new Color(236,236,236); private static final Color bgcolor = Color.white; public TextField epsilon; private Paint paint; private Image im; private Graphics buf; //Mod1State state; public Button bupdate; public Instructions(){ super(); //this.state = state; setLayout(null); setBackground(bgcolor); bupdate = new Button("CLOSE"); bupdate.setBackground(new Color(240,240,255)); add(bupdate); //int buttonx = 410; //int buttony = 440; int buttonx = 500; int buttony = 455; int buttonwide = 70; int buttonheight = 27; bupdate.setBounds(buttonx,buttony,buttonwide,buttonheight); Panel ps7 = new Panel(); ps7.setBackground(Color.lightGray); add(ps7); ps7.setBounds(buttonx-1,buttony-1,buttonwide+2,buttonheight+2); Panel ps8 = new Panel(); ps8.setBackground(Color.black); add(ps8); ps8.setBounds(buttonx-2,buttony-2,buttonwide+4,buttonheight+4); } public void paint(Graphics g){ if(im == null){ im = createImage(getSize().width,getSize().height); buf = im.getGraphics(); drawCanvas(buf); } else{ drawCanvas(buf); } g.drawImage(im,0,0,null); } //Addition to reduce flicker new routine public void update(Graphics g){ // added to avoid clearing paint(g); } public void clear(){ this.getGraphics().clearRect(0,0,getSize().width,getSize().height); repaint(); } public void drawCanvas(Graphics g){ FontMetrics fm; Graphics2D g2d = (Graphics2D)g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.clearRect(0,0,getSize().width-1,getSize().height-1); //g.setFont(font_one); //fm = g.getFontMetrics(); //boolean saveOldFlag = MaestroG.useBiggerFont; //MaestroG.useBiggerFont = false; g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,16f)); g.setFont(new Font("SanSerif",Font.BOLD,16)); int startx = 20; int starty = 90; g.drawString("Instructions", startx,40); //g.setFont(state.ttfFont.deriveFont(14f)); //g.setFont(new Font("SanSerif",Font.PLAIN,14)); //g.drawString("This module can accomodate linearly polarized plane "+ // "waves in both lossy and lossless media.",15,50); g.setFont(new Font("SanSerif",Font.PLAIN,14)); int nextX; //String s = "This module simulates how a short dipole radiates an EM "+ // " wave into its "; //int nextX = STR.displayString(s,g,200,15); //s = " surrounding space. The dipole is oriented along the z-axis."; //nextX = STR.displayString(s,g,200,35); g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); //g.drawString("Input", 15,50); g.drawString("Input", startx,starty); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); int deltaY = 25; //INPUT String s = "\u2022 Plot Range: The spatial dimension (in units of \u03bb)"+ " of the display plane"; nextX = STR.displayString(s,g,startx,starty+2*deltaY); s = "\u2022 Choice of Horizontal (x-y) or Vertical Plane"; nextX = STR.displayString(s,g,startx,starty+3*deltaY); s = "\u2022 Choice of E"+STR.SUB+"\u03b8"+STR.ENDSUB+" (exact "+ "solution) or E"+STR.SUB+"\u03b8FF"+STR.ENDSUB+ " (far-field approximation)"; nextX = STR.displayString(s,g,startx,starty+4*deltaY); //OUTPUT g.setColor(Color.red); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,15f)); g.setFont(new Font("SanSerif",Font.BOLD,15)); int newY = starty+7*deltaY; g.drawString("Displayed Information", startx,newY); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); newY += 40; s = "\u2022 2-D patterns of E\u03b8"+STR.SUB+"\u03b8"+STR.ENDSUB+ " and H"+STR.SUB+"\u03c6"+STR.ENDSUB+", in the Horizontal"+ " and Vertical planes"; nextX = STR.displayString(s,g,startx,newY); s = "\u2022 Dynamic simulation of how E"+STR.SUB+"\u03b8"+STR.ENDSUB+ ", H"+STR.SUB+"\u03c6"+STR.ENDSUB+", and the current I(t), "+ "vary with time"; nextX = STR.displayString(s,g,startx,newY+deltaY); drawCopyRight(g); //MaestroG.useBiggerFont = saveOldFlag; } public void drawCopyRight(Graphics g) { int deltaY = 20; int startingY = getSize().height - 75; int startingX = 0; FontMetrics fm; g.setColor(Color.black); g.setColor(Color.black); //g.setFont(normalfont14); //g.setFont(state.ttfFont.deriveFont(14f)); g.setFont(new Font("SanSerif",Font.PLAIN,14)); fm = g.getFontMetrics(); g.drawString("Applet Design: Umberto Ravaioli", startingX+15,startingY+deltaY); //MaestroG.superscripter("Interactive Java","TM"," platform: www.amanogawa.com", // g,14,startingX,startingY+2*deltaY); String s = "Interactive Java"+STR.SUP+"TM"+STR.ENDSUP+ " platform: www.amanogawa.com"; int nextX = STR.displayString(s,g,startingX+15,startingY+2*deltaY); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength+= 10; //g.setFont(state.ttfFont.deriveFont(14f)); g.drawString("All Rights Reserved",startingX+15,startingY+3*deltaY); g.drawLine(startingX,startingY+5, startingX+15+lineLength+10,startingY+5); g.drawLine(startingX+15+lineLength+10,startingY+5, startingX+15+lineLength+10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End