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 = Color.white; public TextField epsilon; private Paint paint; private Image im; private Graphics buf; public Button bupdate; NewGuide_State state; private BufferedImage bullet; public Instructions(NewGuide_State state){ super(); this.state = state; setLayout(null); getImages(); setBackground(bgcolor); bupdate = new Button("CLOSE"); bupdate.setBackground(new Color(240,240,255)); bupdate.setFont(new Font("SanSerif",Font.PLAIN,state.font12)); add(bupdate); int buttonx = state.s400+state.s50; int buttony = state.s250; 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); g.setColor(Color.black); //g.setFont(state.ttfFont.deriveFont(Font.BOLD,16f)); g.setFont(new Font("SanSerif",Font.BOLD,state.font16)); g.drawString("Instructions", state.s15,state.s25); int xstart = state.s170; g.setFont(new Font("SanSerif",Font.PLAIN,state.font14)); String s = "This module examines the radiation behavior of an array"; int nextX = STR.displayString(s,g,xstart,state.s25); s = " composed of two vertically oriented dipoles. For each"; nextX = STR.displayString(s,g,xstart,state.s45); s = " dipole, its length and current amplitude and phase may be"; nextX = STR.displayString(s,g,xstart,state.s65); s = " set individually."; nextX = STR.displayString(s,g,xstart,state.s85); g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,state.font15)); int newY = state.s120; g.drawString("Input", state.s15,newY); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,state.font14)); int deltaY = state.s20; int xpos1 = state.s15; //INPUT //s = "\u2022 Frequency "+STR.ITAL+"f"+STR.ENDITAL; //nextX = STR.displayString(s,g,xpos1,newY+deltaY); g.drawImage(bullet,xpos1,newY+deltaY-bullet.getHeight(),this); s = " Frequency "+STR.ITAL+"f"+STR.ENDITAL; nextX = STR.displayString(s,g,xpos1+bullet.getWidth(),newY+deltaY); //s = "\u2022 Spacing between dipoles d"; //nextX = STR.displayString(s,g,xpos1,newY+2*deltaY); g.drawImage(bullet,xpos1,newY+2*deltaY-bullet.getHeight(),this); s = " Spacing between dipoles d"; nextX = STR.displayString(s,g,xpos1+bullet.getWidth(),newY+2*deltaY); //s = "\u2022 Length and current amplitude of"; //nextX = STR.displayString(s,g,xpos1,newY+3*deltaY); g.drawImage(bullet,xpos1,newY+3*deltaY-bullet.getHeight(),this); s = " Length and current amplitude of"; nextX = STR.displayString(s,g,xpos1+bullet.getWidth(),newY+3*deltaY); s = "each dipole"; nextX = STR.displayString(s,g,xpos1+state.s12,newY+4*deltaY); //s = "\u2022 Phase of dipole B relative to dipole A"; //nextX = STR.displayString(s,g,xpos1,newY+5*deltaY); g.drawImage(bullet,xpos1,newY+5*deltaY-bullet.getHeight(),this); s = " Phase of dipole B relative to dipole A"; nextX = STR.displayString(s,g,xpos1+bullet.getWidth(),newY+5*deltaY); //OUTPUT g.setColor(Color.red); g.setFont(new Font("SanSerif",Font.BOLD,state.font15)); int xpos2 = state.s300; g.drawString("Displayed Information", xpos2,newY); g.setColor(Color.black); g.setFont(new Font("SanSerif",Font.PLAIN,state.font14)); newY += state.s20; //s = "\u2022 Current distributions on dipoles A and B"; //nextX = STR.displayString(s,g,xpos2,newY); g.drawImage(bullet,xpos2,newY-bullet.getHeight(),this); s = " Current distributions on dipoles A and B"; nextX = STR.displayString(s,g,xpos2+bullet.getWidth(),newY); //s = "\u2022 Radiation patterns of "+STR.BOLD+"E"+STR.ENDBOLD+ // " and "+STR.BOLD+"H"+STR.ENDBOLD; //nextX = STR.displayString(s,g,xpos2,newY+deltaY); g.drawImage(bullet,xpos2,newY+deltaY-bullet.getHeight(),this); s = " Radiation patterns of "+STR.BOLD+"E"+STR.ENDBOLD+ " and "+STR.BOLD+"H"+STR.ENDBOLD; nextX = STR.displayString(s,g,xpos2+bullet.getWidth(),newY+deltaY); //s = "\u2022 Directivity"; //nextX = STR.displayString(s,g,xpos2,newY+2*deltaY); g.drawImage(bullet,xpos2,newY+2*deltaY-bullet.getHeight(),this); s = " Directivity"; nextX = STR.displayString(s,g,xpos2+bullet.getWidth(),newY+2*deltaY); drawCopyRight(g); } 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.setFont(new Font("SanSerif",Font.PLAIN,state.font14)); fm = g.getFontMetrics(); g.drawString("Applet Design: Umberto Ravaioli", startingX+state.s15,startingY+deltaY); String s = "Interactive Java"+STR.SUP+"TM"+STR.ENDSUP+ " platform: www.amanogawa.com"; int nextX = STR.displayString(s,g,startingX+state.s15,startingY+2*deltaY); int lineLength = fm.stringWidth("Interactive JavaTM platform: www.amanogawa.com"); lineLength+= state.s10; //g.setFont(state.ttfFont.deriveFont(14f)); g.drawString("All Rights Reserved",startingX+state.s15,startingY+3*deltaY); g.drawLine(startingX,startingY+state.s5, startingX+state.s15+lineLength+state.s10,startingY+state.s5); g.drawLine(startingX+state.s15+lineLength+state.s10,startingY+state.s5, startingX+state.s15+lineLength+state.s10,startingY+4*deltaY); } //---------------------------------------------------------------------------------------- }//End