// 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.awt.*; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; public class Instructions extends Panel { private static final Color bgcolor = new Color(255,255,250); //private static final Color bgcolor = Color.white; public TextField epsilon; //private Paint paint; private Image im; private Graphics buf; Trans_State state; public Button bupdate; private BufferedImage bullet; public Instructions(Trans_State state){ super(); this.state = state; setLayout(null); setBackground(bgcolor); getImages(); // update button bupdate = new Button("CLOSE"); bupdate.setBackground(new Color(240,240,255)); bupdate.setFont(state.ttfFont.deriveFont((float)(state.s12))); add(bupdate); int buttonx = state.s430; int buttony = state.s550; int buttonwide = state.s70; int buttonheight = state.s27; 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); } private void getImages() { // read in the bullet image, because CHEERPJ does not render this // symbol in any font! (java to javascript converter) try { //bullet = ImageIO.read(getClass().getResource("bullet.png")); BufferedImage img = ImageIO.read(getClass().getResource("bullet.png")); int targetWidth = (int) (state.sfactor * img.getWidth()); int targetHeight = (int) (state.sfactor * img.getHeight()); bullet = new BufferedImage(targetWidth, targetHeight, BufferedImage.TYPE_INT_RGB); Graphics2D graphics2D = bullet.createGraphics(); graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); graphics2D.drawImage(img, 0, 0, targetWidth, targetHeight, 0, 0, img.getWidth(), img.getHeight(), null); graphics2D.dispose(); } catch (IOException e) { e.printStackTrace(); } } 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); boolean saveOldFlag = MaestroG.useBiggerFont; MaestroG.useBiggerFont = false; g.setColor(Color.black); g.drawRect(0,0,getSize().width-1,getSize().height-1); g.setFont(state.ttfFont.deriveFont(Font.BOLD,(float)(state.s16))); g.drawString("Instructions", state.s15,state.s15); g.setColor(Color.red); g.setFont(state.ttfFont.deriveFont(Font.BOLD,(float)(state.s15))); g.drawString("Input", state.s25,state.s90); g.setColor(Color.black); g.setFont(state.ttfFont.deriveFont((float)(state.s14))); int deltaY = state.s22; //INPUT //g.drawString("\u2022 Characteristic impedance", state.s25,state.s120); g.drawImage(bullet,state.s25,state.s120-bullet.getHeight(), this); g.drawString(" Characteristic impedance",state.s25+bullet.getWidth(),state.s120); FontMetrics fmNormal, fmSmall; g.setFont(state.ttfFont.deriveFont((float)(state.s12))); fmSmall = g.getFontMetrics(); g.setFont(state.ttfFont.deriveFont((float)(state.s14))); fmNormal = g.getFontMetrics(); int lineLength = fmNormal.stringWidth("\u2022 Specify Z, "); lineLength += fmSmall.stringWidth("L"); //MaestroG.subscripter("\u2022 Specify Z","L",", ", // g,state.font14,state.s25,state.s120+deltaY); g.drawImage(bullet,state.s25,state.s120+deltaY-bullet.getHeight(), this); MaestroG.subscripter(" Specify Z","L",", ", g,state.font14,state.s25+bullet.getWidth(),state.s120+deltaY); MaestroG.subscripter("Y","L",", \u0393, or use mouse to position load on Smith Chart", g,state.font14,state.s25+lineLength,state.s120+deltaY); //g.drawString(" use mouse to position load on Smith Chart",25,125+3*deltaY); //g.drawString("\u2022 Use cursor to move towards the source", state.s25,state.s120+2*deltaY); g.drawImage(bullet,state.s25,state.s120+2*deltaY-bullet.getHeight(), this); g.drawString(" Use cursor to move towards the source", state.s25+bullet.getWidth(),state.s120+2*deltaY); //OUTPUT int newY = state.s140+4*deltaY; g.setColor(Color.red); g.setFont(state.ttfFont.deriveFont(Font.BOLD,(float)(state.s15))); g.drawString("Displayed Information", state.s25,newY); g.setColor(Color.black); g.setFont(state.ttfFont.deriveFont((float)(state.s14))); newY += state.s40; deltaY = state.s25; //g.drawString("\u2022 SWR circle", state.s25,newY); g.drawImage(bullet,state.s25,newY-bullet.getHeight(), this); g.drawString(" SWR circle", state.s25+bullet.getWidth(),newY); lineLength = fmNormal.stringWidth(" r and "); lineLength += fmSmall.stringWidth("L"); //dblsubscriptor("r","L"," and x","L"," circles",g,450,80+deltaY); //MaestroG.subscripter("\u2022 r","L"," and",g,state.font14,state.s25,newY+deltaY); g.drawImage(bullet,state.s25,newY+deltaY-bullet.getHeight(), this); MaestroG.subscripter(" r","L"," and",g,state.font14,state.s25+bullet.getWidth(),newY+deltaY); MaestroG.subscripter(" x","L"," circles",g,state.font14,state.s25+lineLength,newY+deltaY); //g.drawString("\u2022 \u0393 = Load Reflection Coefficient",state.s25,newY+2*deltaY); g.drawImage(bullet,state.s25,newY+2*deltaY-bullet.getHeight(), this); g.drawString(" \u0393 = Load Reflection Coefficient",state.s25+bullet.getWidth(),newY+2*deltaY); lineLength = fmNormal.stringWidth("\u2022 \u0393 = \u0393"); lineLength += fmSmall.stringWidth("d "); //MaestroG.subscripter("\u2022 \u0393","d"," = \u0393",g,state.font14,state.s25,newY+3*deltaY); g.drawImage(bullet,state.s25,newY+3*deltaY-bullet.getHeight(), this); MaestroG.subscripter(" \u0393","d"," = \u0393",g,state.font14,state.s25+bullet.getWidth(),newY+3*deltaY); MaestroG.superscripter("e","-j2\u03b2d",", phase-shifted Reflection "+ "Coefficient",g,state.font14,state.s25+lineLength,newY+3*deltaY); //g.drawString("\u2022 Z(d) = Line Impedance",state.s25,newY+4*deltaY); g.drawImage(bullet,state.s25,newY+4*deltaY-bullet.getHeight(), this); g.drawString(" Z(d) = Line Impedance",state.s25+bullet.getWidth(),newY+4*deltaY); //g.drawString("\u2022 y(d) = Line Admittance",state.s25,newY+5*deltaY); g.drawImage(bullet,state.s25,newY+5*deltaY-bullet.getHeight(), this); g.drawString(" y(d) = Line Admittance",state.s25+bullet.getWidth(),newY+5*deltaY); //g.drawString("\u2022 S = Voltage-Standing-Wave-Ratio",state.s25,newY+6*deltaY); g.drawImage(bullet,state.s25,newY+6*deltaY-bullet.getHeight(), this); g.drawString(" S = Voltage-Standing-Wave-Ratio",state.s25+bullet.getWidth(),newY+6*deltaY); drawCopyRight(g); MaestroG.useBiggerFont = saveOldFlag; } public void drawCopyRight(Graphics g) { int deltaY = state.s20; int startingY = getSize().height - state.s70; int startingX = 0; FontMetrics fm; g.setColor(Color.black); g.setColor(Color.black); //g.setFont(normalfont14); g.setFont(state.ttfFont.deriveFont((float)(state.font14))); fm = g.getFontMetrics(); g.drawString("Application Design: Umberto Ravaioli", startingX+state.s15,startingY+deltaY); MaestroG.superscripter("Interactive Java","TM"," platform: www.amanogawa.com", g,state.font14,startingX+state.s15,startingY+2*deltaY); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength += state.s10; g.setFont(state.ttfFont.deriveFont((float)(state.s14))); g.drawString("All Rights Reserved",startingX+state.s15,startingY+3*deltaY); g.drawLine(startingX,startingY, startingX+lineLength+25,startingY); g.drawLine(startingX+lineLength+25,startingY, startingX+lineLength+25,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End