4 import javax.swing.*;
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6 public class ScaleCanvas extends JPanel {
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15 public static final int HEIGHT = 30;
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17 boolean paintFlag = false;
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19 protected AlignViewport av;
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21 public ScaleCanvas(AlignViewport av) {
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25 public void paintComponent(Graphics g) {
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27 double charWidth = av.getCharWidth();
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28 int charHeight = av.getCharHeight();
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31 imgWidth != getWidth() ||
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32 imgHeight != getHeight() ||
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33 paintFlag == true) {
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35 imgWidth = getWidth();
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36 imgHeight = getHeight();
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37 img = createImage(imgWidth,imgHeight);
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39 gg = img.getGraphics();
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40 gg.setColor(Color.white);
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41 gg.fillRect(0,0,imgWidth,imgHeight);
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47 gg.setFont(av.getFont());
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49 //Fill in the background
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51 gg.setColor(Color.white);
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52 gg.fillRect(0,0,imgWidth,imgHeight);
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56 int resWidth = av.getEndRes() - av.getStartRes() + 1;
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58 // We want roughly one tick every 50 pixels
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60 double rough = getWidth()/50.0;
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62 double roughtick = resWidth/rough;
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64 int digits = (int)(Math.log(roughtick)/Math.log(10));
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65 int num = (int)(roughtick/Math.pow(10,digits));
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67 if (Math.abs(10-num) < 3) {
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69 } else if (Math.abs(5-num) <= 2) {
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74 //System.out.println("Dig " + digits + " " + rough + " " + roughtick + " " + getWidth() + " " + num);
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76 int space = (int)(num * Math.pow(10,digits));
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80 gg.setColor(Color.black);
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82 int startx = av.getStartRes();
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83 int endx = av.getEndRes();
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84 int scalestartx = startx - startx%space + space;
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87 //Fill the selected columns
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88 ColumnSelection cs = av.getColumnSelection();
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89 int width = (int)charWidth;
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93 gg.setColor(new Color(220,0,0));
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94 for (int i=0; i<cs.size(); i++) {
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95 int sel = cs.columnAt(i);
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96 // System.out.println("Selection = " + sel);
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97 if ( sel >= startx && sel <= endx) {
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99 gg.fillRect((int)((sel-startx)*charWidth),0,width,getHeight());
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103 // Draw the scale numbers
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104 gg.setColor(Color.black);
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107 for (int i=scalestartx;i < endx;i+= space) {
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109 String string = String.valueOf(i);
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111 gg.drawString(string,(int)((i-startx-1)*charWidth),15);
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112 gg.drawLine( (int)((i-startx-1)*charWidth +charWidth/2), 17, (int)((i-startx-1)*charWidth +charWidth/2), 24);
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117 g.drawImage(img,0,0,this);
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121 public Dimension getMinimumSize() {
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122 return new Dimension(500,HEIGHT);
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125 public Dimension getPreferredSize() {
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126 return getMinimumSize();
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