Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/tools/dash/graph/Chart.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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children | 48228766ed4c |
rev | line source |
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0
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1 package org.dancres.blitz.tools.dash.graph; |
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2 |
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3 import org.dancres.blitz.tools.dash.ColorScheme; |
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4 |
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5 import java.lang.*; |
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6 import java.awt.*; |
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7 import java.awt.event.*; |
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8 import java.text.*; |
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9 import javax.swing.*; |
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10 |
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11 public class Chart extends JPanel |
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12 implements ChartItemEnabler |
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13 { |
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14 |
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15 private class Data |
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16 { |
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17 double points[]; |
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18 String label; |
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19 boolean isVisible=true; |
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20 double [] pointFactor; |
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21 String [] tags; |
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22 int [] date; |
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23 |
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24 public int getSize() { return points.length;} |
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25 public double getPoint(int p) { return points[p];} |
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26 public double getFactor(int f) { return pointFactor[f];} |
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27 public String getTag(int f) { return tags[f];} |
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28 } |
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29 private static final Color [] chartColor={ColorScheme.READ, |
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30 ColorScheme.WRITE, |
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31 ColorScheme.TAKE}; |
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32 |
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33 //constraints |
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34 private static final int MAX_DATA_SETS=chartColor.length; |
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35 |
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36 private int dsCounter=0; |
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37 private Data [] dataSet= new Data[MAX_DATA_SETS]; |
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38 private int labelEvery=1; |
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39 // |
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40 //identifier mappings |
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41 private static final int SOLID=0; |
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42 private static final int OUTLINE=1; |
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43 private static NumberFormat formatter = NumberFormat.getInstance(); |
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44 |
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45 private IdDrawer [] idDrawer= new IdDrawer[MAX_DATA_SETS]; |
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46 |
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47 private int maxSize=0; |
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48 private double maxValue=0.0; |
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49 private double minValue=0.0; |
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50 private int maxId; //index to largest dataset |
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51 private int startAt=0; //for drawing to endAt |
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52 private int endAt=-1; //reset in zoom |
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53 private int [] xTagPosition; |
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54 |
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55 private Color axisColor=Color.black; |
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56 private Color gridColor=Color.gray; |
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57 private int yOffset=25; |
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58 private boolean dirtyCache; |
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59 private Dimension minSize=new Dimension(200,200); |
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60 private Dimension currentSize=null; |
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61 private Rectangle chartRect= new Rectangle(); |
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62 private Rectangle zoomRect; |
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63 private boolean isShown=false; //at least one dataset visiable |
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64 //public methods |
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65 public Chart() |
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66 { |
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67 idDrawer[0]=new SqDrawer(SOLID); |
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68 idDrawer[1]=new XDrawer(); |
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69 idDrawer[2]=new RoundRectDrawer(SOLID); |
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70 |
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71 |
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72 } |
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73 synchronized public void addData(final String name,final double [] data, |
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74 final String [] tags) |
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75 throws ChartException |
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76 { |
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77 addData(name,data,tags,null); |
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78 } |
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79 synchronized public void addData(final String name,final double [] data, |
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80 final String [] tags,final int [] dates) |
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81 throws ChartException |
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82 { |
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83 if(dsCounter==MAX_DATA_SETS) |
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84 throw new ChartException("Maximum number of data sets exceeded!"); |
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85 |
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86 setDataAt(dsCounter++,name,data,tags,dates); |
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87 } |
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88 public void setDataAt(int index,final String name,final double [] data, |
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89 final String [] tags,final int [] dates) |
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90 throws ChartException |
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91 { |
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92 dirtyCache=true; //flag that calcFactors must be called internally |
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93 endAt=-1; |
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94 |
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95 Data d= new Data(); |
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96 d.points=data; |
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97 d.label=name; |
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98 d.tags=tags; |
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99 if(dates!=null) |
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100 d.date=dates; |
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101 else |
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102 { |
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103 //set to defaults |
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104 int np=data.length; |
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105 d.date= new int[np]; |
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106 for(int i=0;i<np;i++) |
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107 d.date[i]=i; |
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108 } |
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109 d.pointFactor= new double[ tags.length ]; |
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110 dataSet[ index ]=d; |
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111 } |
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112 public void setLabelEvery(int every) {labelEvery=every;} |
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113 public static int getMaxSupportedDataSets() {return MAX_DATA_SETS;} |
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114 public Dimension getMinimumSize() |
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115 { |
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116 return minSize; |
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117 } |
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118 public Dimension getPreferredSize() |
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119 { |
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120 if(currentSize==null) |
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121 currentSize= getSize(); |
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122 |
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123 return currentSize; |
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124 } |
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125 public void setSize(Dimension d) |
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126 { |
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127 super.setSize(d); |
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128 currentSize=d; |
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129 } |
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130 |
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131 public void print(final Graphics g,final int yoffset) |
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132 { |
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133 int ty=yOffset; |
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134 yOffset=yoffset; |
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135 super.print(g); |
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136 yOffset=ty; |
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137 } |
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138 public void enableData(final String name,final boolean yesno) |
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139 { |
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140 for( int i=0;i<dsCounter;i++) |
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141 { |
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142 if(dataSet[i].label.compareTo(name)==0) |
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143 { |
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144 dataSet[i].isVisible=yesno; |
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145 dirtyCache=true; |
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146 repaint(); |
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147 return; |
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148 } |
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149 } |
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150 } |
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151 public void paint(Graphics g) |
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152 { |
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153 Dimension dim=getSize(); |
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154 g.setColor(Color.white); |
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155 g.fillRect(0,0,dim.width,dim.height); |
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156 |
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157 boolean isPrinting=g instanceof PrintGraphics; |
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158 |
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159 if(dirtyCache) |
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160 { |
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161 calcFactors(); |
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162 dirtyCache=false; |
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163 } |
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164 g.setFont( new Font("Dialog",Font.PLAIN,10) ); |
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165 |
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166 if(dim.height<50) //to small |
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167 { |
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168 return; |
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169 } |
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170 int xoff=45; |
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171 int yoff=yOffset; //set in print(), default==25 |
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172 int wid=dim.width-(2*xoff); |
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173 int hi=dim.height-(2*yoff); |
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174 int baseY=15; |
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175 int legy=baseY; //title pos |
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176 int legx=xoff; |
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177 |
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178 FontMetrics fm=g.getFontMetrics(); |
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179 |
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180 isShown=false; |
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181 boolean firstchart=true; |
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182 int ns=dsCounter; |
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183 double prevx=0;//last place vert grid line drawn |
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184 double lastLabelPos=-1000;//make sure first label is always drawn |
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185 //Draw dataset titles, then calc size of graphRect |
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186 for(int i=0;i<ns;i++) |
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187 { |
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188 if(dataSet[i].isVisible) |
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189 { |
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190 g.setColor( chartColor[i] ); |
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191 |
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192 String dslabel=dataSet[i].label; |
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193 int strWidth=fm.stringWidth(dslabel); |
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194 if((strWidth+legx)>(wid-5) && firstchart==false) //CR |
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195 { |
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196 legx=xoff;legy+=15; |
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197 } |
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198 firstchart=false; |
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199 //draw identifier |
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200 idDrawer[i].draw(g,legx-2,legy-7); |
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201 //draw label |
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202 g.drawString(dslabel,legx+5,legy); |
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203 |
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204 legx+=strWidth+12; |
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205 } |
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206 } |
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207 //now calc the drawable area for the chart |
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208 // draw zoomable area |
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209 yoff=legy+15; |
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210 hi-=(legy-baseY)+5; |
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211 |
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212 if(zoomRect!=null) |
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213 { |
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214 g.setColor(Color.lightGray); |
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215 g.fillRect(zoomRect.x,yoff,zoomRect.width,hi); |
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216 } |
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217 //border |
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218 g.setColor(axisColor); |
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219 g.drawRect(xoff,yoff,wid,hi); |
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220 //cache for zooming |
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221 chartRect.setBounds(xoff,yoff,wid,hi); |
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222 //draw the points |
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223 for(int i=0;i<ns;i++) |
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224 { |
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225 if(dataSet[i].isVisible) |
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226 { |
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227 g.setColor( chartColor[i] ); |
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228 int labelWidth=fm.stringWidth(dataSet[i].getTag(0)); |
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229 |
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230 isShown=true; |
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231 int npoints=dataSet[i].getSize(); |
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232 double lastx=0;//=xoff; |
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233 double lasty=0;//yoff+hi; |
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234 int labelCounter=labelEvery; //make sure first label is drawn |
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235 |
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236 for(int j=startAt;j<npoints && j<=endAt;j++) |
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237 { |
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238 double val=dataSet[i].getPoint(j); |
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239 double xpos=xoff+(wid*dataSet[i].getFactor(j)); |
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240 double yfactor= |
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241 (val-minValue)/(maxValue-minValue); |
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242 double ypos=yoff+(hi*(1-yfactor)); |
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243 |
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244 if(lastx==0 && lasty==0) |
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245 { |
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246 //set to current |
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247 lastx=xpos;lasty=ypos; |
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248 } |
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249 if(xpos>(prevx+25)) |
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250 { |
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251 g.setColor(gridColor); |
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252 g.drawLine((int)xpos,(int)yoff, |
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253 (int)xpos,(int)yoff+hi+2); |
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254 g.setColor(axisColor); |
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255 if(labelCounter%labelEvery==0 && |
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256 xpos>(lastLabelPos+labelWidth+10)) |
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257 { |
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258 xTagPosition[j]=(int)xpos-5; |
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259 g.drawString(dataSet[i].getTag(j),xTagPosition[j],(int)yoff+hi+20); |
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260 lastLabelPos=xpos; |
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261 } |
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262 else |
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263 { |
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264 xTagPosition[j]=-1; //invalid |
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265 } |
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266 g.setColor(chartColor[i]); |
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267 prevx=xpos; |
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268 } |
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269 |
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270 g.drawLine((int)lastx,(int)lasty,(int)xpos, |
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271 (int)ypos); |
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272 //draw identifier |
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273 //g.drawRect((int)xpos-1,(int)ypos-1,2,2); |
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274 idDrawer[i].draw(g,(int)xpos-2,(int)ypos-2); |
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275 lastx=xpos; |
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276 lasty=ypos; |
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277 labelCounter++; |
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278 } |
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279 |
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280 } |
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281 |
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282 } |
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283 if(isShown) |
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284 { |
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285 |
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286 |
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287 double inc=(maxValue-minValue)/4;//number of labels (could be set by client) |
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288 double label=maxValue; |
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289 double y=yoff; |
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290 |
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291 //System.out.println("maxValue="+maxValue+"minValue="+minValue+" inc="+inc); |
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292 |
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293 String str=null; |
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294 String lastStr=null; |
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295 |
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296 //count number of labels to display |
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297 //added version 1.1 |
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298 java.util.ArrayList labels=new java.util.ArrayList(); |
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299 |
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300 for(int yaxis=0;yaxis<5;yaxis++) |
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301 { |
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302 |
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303 str=""+(int)label;//formatter.format(label); |
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304 int strLen=str.length(); |
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305 for(int i=strLen;i<7;i++){ |
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306 str=" "+str; |
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307 } |
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308 if(lastStr==null || lastStr.equals(str)==false){ |
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309 labels.add(str); |
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310 } |
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311 |
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312 lastStr=str; |
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313 |
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314 label-=inc; |
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315 } |
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316 int nLabels=labels.size(); |
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317 |
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318 for(int yaxis=0;yaxis<nLabels;yaxis++) |
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319 { |
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320 g.setColor( axisColor ); |
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321 str=labels.get(yaxis).toString(); |
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322 g.drawString( str,xoff-45,(int)y+6); |
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323 g.setColor( gridColor ); |
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324 if(yaxis<nLabels-1){ |
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325 g.drawLine(xoff-3,(int)y,xoff+wid,(int)y); |
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326 } |
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327 |
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328 y+=(hi/(nLabels-1)); |
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329 |
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330 } |
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331 |
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332 } |
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333 else |
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334 { |
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335 g.drawString("no data",legx,legy); |
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336 } |
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337 } |
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338 |
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339 //Private impl |
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340 synchronized private void calcFactors() |
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341 { |
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342 int tsize=0; |
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343 double maxdate=0; |
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344 double mindate=Double.MAX_VALUE; |
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345 //reset MaxValue |
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346 maxValue=0.0; |
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347 maxSize=0; |
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348 minValue=Double.MAX_VALUE; |
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349 int endpos; |
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350 int startpos; |
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351 //find the largest dataset, and max dates |
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352 for(int i=0;i<dsCounter;i++) |
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353 { |
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354 if(dataSet[i].isVisible) |
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355 { |
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356 tsize=dataSet[i].getSize(); |
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357 if(tsize>maxSize) |
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358 { |
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359 maxSize=tsize; |
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360 maxId=i; |
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361 } |
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362 endpos= tsize-1; |
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363 if(endAt!=-1 && endAt<tsize) |
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364 endpos=endAt; |
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365 |
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366 startpos=startAt; |
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367 if(startpos>=tsize) |
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368 startpos=endpos; |
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369 |
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370 int md=dataSet[ i ].date[ endpos ]; |
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371 int mind=dataSet[ i ].date[ startpos ]; |
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372 maxdate=md>maxdate?md:maxdate; |
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373 mindate=mind<mindate?mind:mindate; |
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374 } |
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375 } |
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376 if(endAt==-1)//first time |
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377 { |
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378 endAt=maxSize; |
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379 } |
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380 //allocate xTagPos here - NOT in paint() |
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381 xTagPosition= new int[maxSize]; |
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382 //calculate the factors |
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383 for( int i=0;i<dsCounter;i++) |
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384 { |
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385 if(dataSet[i].isVisible) |
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386 { |
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387 int npoints=dataSet[i].getSize(); |
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388 for(int j=startAt;j<npoints && j<=endAt;j++) |
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389 { |
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390 double date=dataSet[i].date[j]; |
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391 dataSet[i].pointFactor[j]= |
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392 (date-mindate)/(maxdate-mindate); |
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393 double val=dataSet[i].getPoint(j); |
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394 maxValue=maxValue>val ? maxValue : val; |
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395 minValue=val<minValue?val:minValue; |
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396 } |
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397 } |
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398 } |
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399 maxValue=adjustMax(maxValue); |
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400 minValue=adjustMin(minValue); |
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401 |
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402 } |
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403 private double adjustMax(double d) |
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404 { |
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405 double x=d; |
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406 if(x>0) |
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407 x+=0.05; |
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408 else |
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409 x-=0.05; |
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410 |
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411 return Math.rint(x*10)/10; |
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412 } |
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413 private double adjustMin(double d) |
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414 { |
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415 double x=d; |
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416 x-=0.05; |
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417 return Math.rint(x*10)/10; |
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418 } |
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419 //private impl classes internal double-dispatch |
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420 private interface IdDrawer |
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421 { |
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422 public void draw(final Graphics g,final int xpos,final int ypos); |
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423 } |
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424 |
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425 private class SqDrawer |
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426 implements IdDrawer |
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427 { |
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428 private int drawMode; |
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429 |
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430 public SqDrawer(final int mode) |
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431 { |
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432 drawMode=mode; |
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433 } |
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434 public void draw(final Graphics g,final int xpos,final int ypos) |
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435 { |
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436 if(drawMode==SOLID) |
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437 g.fillRect(xpos+1,ypos,4,4); |
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438 else |
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439 g.drawRect(xpos,ypos,4,4); |
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440 } |
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441 } |
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442 private class RoundRectDrawer |
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443 implements IdDrawer |
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444 { |
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445 private int drawMode; |
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446 |
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447 public RoundRectDrawer(final int mode) |
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448 { |
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449 drawMode=mode; |
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450 } |
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451 public void draw(final Graphics g,final int xpos,final int ypos) |
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452 { |
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453 if(drawMode==SOLID) |
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454 g.fillRoundRect(xpos+1,ypos,4,4,4,4); |
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455 else |
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456 g.drawRoundRect(xpos+1,ypos,4,4,4,4); |
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457 } |
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458 } |
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459 private class XDrawer |
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460 implements IdDrawer |
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461 { |
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462 public XDrawer() |
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463 { |
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464 } |
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465 public void draw(final Graphics g,final int xpos,final int ypos) |
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466 { |
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467 int os=2; |
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468 |
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469 g.drawLine(xpos-2+os,ypos-2+os,xpos+2+os,ypos+2+os); |
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470 g.drawLine(xpos+2+os,ypos-2+os,xpos-2+os,ypos+2+os); |
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471 } |
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472 } |
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473 //zoomer |
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474 private int dragStartXPos; |
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475 private int dragStartYPos; |
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476 private int lastXPos; |
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477 //private int lastYPos; |
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478 private boolean isDragging=false; |
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479 |
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480 private void setZoomEndPos(int xend) |
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481 { |
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482 Dimension d=getSize(); |
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483 int s=dragStartXPos; |
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484 int e=xend; |
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485 if(s>e) //right to lseft highlight |
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486 { |
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487 s=xend; |
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488 e=dragStartXPos; |
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489 } |
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490 int oldstart=startAt; |
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491 int oldend=endAt; |
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492 calcNewStartAndEnd(s,e); |
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493 if(startAt<endAt) |
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494 { |
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495 calcFactors(); //recalculate the factors |
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496 } |
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497 else |
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498 { |
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499 startAt=oldstart; |
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500 endAt=oldend; |
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501 } |
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502 // |
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503 /* |
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504 double startFactor=(double)s/(double)d.width; |
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505 double endFactor=(double)e/(double)d.width; |
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506 int oldstart=startAt; |
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507 int oldend=endAt; |
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508 startAt+=(int)(endAt*startFactor); |
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509 endAt=(int)(endAt*endFactor); |
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510 if(startAt<endAt) |
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511 { |
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512 calcFactors(); //recalculate the factors |
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513 } |
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514 else |
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515 { |
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516 startAt=oldstart; |
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517 endAt=oldend; |
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518 } |
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519 */ |
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520 repaint(); |
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521 } |
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522 //calculate startAt, endAt based xTagPositions[] |
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523 private void calcNewStartAndEnd(int xStart,int xEnd) |
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524 { |
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525 //TEST |
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526 //System.out.println("xStart="+xStart+" End="+xEnd); |
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527 |
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528 int lowerBound=0; |
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529 int upperBound=0; |
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530 int xLower=0; |
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531 int xHigher=0; |
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532 int lowestXBound=Integer.MAX_VALUE; |
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533 int highestXBound=Integer.MAX_VALUE; |
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534 |
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535 int size=xTagPosition.length; |
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536 for(int i=0;i<size;i++) |
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537 { |
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538 if(xTagPosition[i]!=-1) |
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539 { |
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540 |
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541 xLower=xStart-xTagPosition[i]; |
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542 xLower=Math.abs(xLower); |
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543 if(xLower<lowestXBound) |
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544 { |
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545 lowestXBound=xLower; |
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546 lowerBound=i; |
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547 } |
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548 xHigher=xEnd-xTagPosition[i]; |
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549 xHigher=Math.abs(xHigher); |
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550 if(xHigher<highestXBound) |
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551 { |
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552 highestXBound=xHigher; |
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553 upperBound=i; |
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554 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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555 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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556 } |
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557 startAt=lowerBound; |
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558 endAt=upperBound; |
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559 |
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560 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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561 |
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562 } |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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563 |