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package org.jfree.chart.plot; |
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import java.awt.Color; |
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import java.util.Iterator; |
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import java.util.LinkedList; |
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import java.util.Map; |
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import java.util.NoSuchElementException; |
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import java.util.Set; |
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import java.util.TreeMap; |
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import javax.swing.event.ChangeEvent; |
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import javax.swing.event.ChangeListener; |
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public class GradientColorPalette |
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implements Cloneable { |
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private TreeMap keyColorMap; |
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private boolean linearMapping; |
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private LinkedList listeners; |
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62 | 20 | public GradientColorPalette() { |
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64 | 20 | this.keyColorMap = new TreeMap(); |
65 | 20 | this.linearMapping = true; |
66 | 20 | this.listeners = new LinkedList(); |
67 | 20 | addKeyColor (-1.0, new Color(255, 0, 0)); |
68 | 20 | addKeyColor ( 0.0, new Color( 0, 0, 0)); |
69 | 20 | addKeyColor ( 1.0, new Color( 0,255, 0)); |
70 | 20 | return; |
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} |
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83 | 22 | public GradientColorPalette(double min, double max) { |
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85 | 22 | this.keyColorMap = new TreeMap(); |
86 | 22 | this.linearMapping = true; |
87 | 22 | this.listeners = new LinkedList(); |
88 | 22 | addKeyColor (min, new Color(255, 0, 0)); |
89 | 22 | addKeyColor ( 0.0, new Color( 0, 0, 0)); |
90 | 22 | addKeyColor (max, new Color( 0,255, 0)); |
91 | 22 | return; |
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} |
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101 | 3 | public GradientColorPalette(Map keyColorMap) { |
102 | 3 | this.keyColorMap = new TreeMap(keyColorMap); |
103 | 2 | this.linearMapping = true; |
104 | 2 | this.listeners = new LinkedList(); |
105 | 2 | } |
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public Color setKeyColor(double value, Color color) { |
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117 | 8 | if (color == null) throw new NullPointerException(); |
118 | 7 | Color old = (Color)this.keyColorMap.remove((Object)new Double(value)); |
119 | 7 | this.keyColorMap.put ((Object)new Double(value), (Object)color); |
120 | 7 | notifyChangeListeners(new ChangeEvent(this)); |
121 | 7 | return old; |
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} |
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public void addKeyColor(double value, int r, int g, int b) |
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throws IllegalArgumentException { |
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144 | 14 | addKeyColor(value, new Color(r,g,b)); |
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146 | 8 | } |
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public void addKeyColor(double value, Color color) |
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throws NullPointerException { |
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161 | 140 | if (color == null) throw new NullPointerException(); |
162 | 139 | this.keyColorMap.put ((Object)new Double(value), (Object)color); |
163 | 139 | notifyChangeListeners(new ChangeEvent(this)); |
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165 | 139 | } |
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public void addChangeListener(ChangeListener listener) { |
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174 | 26 | this.listeners.add((Object)listener); |
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176 | 26 | } |
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public void removeChangeListener(ChangeListener listener) { |
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185 | 2 | this.listeners.remove((Object)listener); |
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187 | 2 | } |
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private void notifyChangeListeners(ChangeEvent event) { |
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196 | 163 | Iterator iterator = listeners.iterator(); |
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ChangeListener listener; |
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199 | 165 | while(iterator.hasNext()) { |
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201 | 2 | listener = (ChangeListener)(iterator.next()); |
202 | 2 | listener.stateChanged (event); |
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204 | 2 | } |
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206 | 163 | } |
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public Set getKeyColors() { |
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215 | 16 | return this.keyColorMap.keySet(); |
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} |
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public Color getKeyColor(double value) { |
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230 | 43 | return (Color)this.keyColorMap.get((Object)new Double(value)); |
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} |
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public Color removeKeyColor(double value) { |
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244 | 7 | Color old = (Color)this.keyColorMap.remove((Object)new Double(value)); |
245 | 7 | notifyChangeListeners(new ChangeEvent(this)); |
246 | 7 | return old; |
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} |
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public Color getColor(double value) { |
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double proportion; |
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Color color1; |
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Color color2; |
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Color color; |
261 | 90 | Double valueObject = new Double(value); |
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Double value1; |
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Double value2; |
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266 | 90 | color = (Color)this.keyColorMap.get((Object)(valueObject)); |
267 | 90 | if (color != null) return color; |
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try { |
271 | 7 | value1 = (Double)this.keyColorMap.headMap(valueObject).lastKey(); |
272 | 2 | } catch (NoSuchElementException e) { |
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274 | 2 | return (Color)this.keyColorMap.get((Object) |
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(this.keyColorMap.tailMap(valueObject).firstKey()) |
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); |
277 | 5 | } |
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try { |
281 | 5 | value2 = (Double)this.keyColorMap.tailMap(valueObject).firstKey(); |
282 | 1 | } catch (NoSuchElementException e) { |
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284 | 1 | return (Color)this.keyColorMap.get((Object) |
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(this.keyColorMap.headMap(valueObject).lastKey()) |
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); |
287 | 4 | } |
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289 | 4 | color1 = (Color)this.keyColorMap.get((Object)value1); |
290 | 4 | color2 = (Color)this.keyColorMap.get((Object)value2); |
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293 | 4 | if (this.linearMapping) { |
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295 | 1 | proportion = (value-value1.doubleValue()) |
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/ (value2.doubleValue()-value1.doubleValue()); |
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298 | 1 | } else { |
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double logvalue; |
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double logvalue1; |
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double logvalue2; |
304 | 3 | if (value<0) { |
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309 | 2 | if (value2.doubleValue() > 0) |
310 | 0 | return new Color(0,0,0); |
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314 | 2 | if (value2.doubleValue() == 0) value2 = new Double(value/100); |
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316 | 2 | logvalue = Math.log(-value); |
317 | 2 | logvalue1 = Math.log(-value1.doubleValue()); |
318 | 2 | logvalue2 = Math.log(-value2.doubleValue()); |
319 | 2 | proportion = (logvalue-logvalue1) |
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/ (logvalue2-logvalue1); |
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322 | 2 | } else { |
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327 | 1 | if (value1.doubleValue() < 0) |
328 | 0 | return new Color(0,0,0); |
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332 | 1 | if (value1.doubleValue() == 0) value1 = new Double(value/100); |
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334 | 1 | logvalue = Math.log(value); |
335 | 1 | logvalue1 = Math.log(value1.doubleValue()); |
336 | 1 | logvalue2 = Math.log(value2.doubleValue()); |
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338 | 1 | proportion = (logvalue-logvalue1) |
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/ (logvalue2-logvalue1); |
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} |
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} |
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345 | 4 | return new Color( |
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(int)(color2.getRed()*proportion + |
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color1.getRed()*(1-proportion)), |
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(int)(color2.getGreen()*proportion + |
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color1.getGreen()*(1-proportion)), |
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(int)(color2.getBlue()*proportion + |
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color1.getBlue()*(1-proportion)) |
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); |
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} |
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public void setLinear(boolean linear) { |
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364 | 10 | this.linearMapping = linear; |
365 | 10 | notifyChangeListeners (new ChangeEvent(this)); |
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367 | 10 | } |
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public boolean isLinear() { |
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377 | 10 | return this.linearMapping; |
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} |
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public Object clone() { |
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388 | 1 | Iterator iterator = listeners.iterator(); |
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ChangeListener listener; |
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391 | 1 | GradientColorPalette clone = new GradientColorPalette(this.keyColorMap); |
392 | 1 | clone.setLinear(this.linearMapping); |
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394 | 3 | while(iterator.hasNext()) { |
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396 | 2 | listener = (ChangeListener)(iterator.next()); |
397 | 2 | clone.addChangeListener(listener); |
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399 | 2 | } |
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401 | 1 | return (Object)clone; |
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} |
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public boolean equals(Object obj) { |
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GradientColorPalette that; |
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Set thisKeyColors; |
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Set thatKeyColors; |
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LinkedList listeners; |
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Iterator iterator; |
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420 | 7 | if (!(obj instanceof GradientColorPalette)) return false; |
421 | 7 | that = (GradientColorPalette)obj; |
422 | 7 | if (that.isLinear() != this.linearMapping) return false; |
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424 | 7 | thisKeyColors = this.getKeyColors(); |
425 | 7 | thatKeyColors = that.getKeyColors(); |
426 | 7 | if (!thisKeyColors.equals(thatKeyColors)) return false; |
427 | 5 | iterator = thisKeyColors.iterator(); |
428 | 19 | while (iterator.hasNext()) { |
429 | 15 | double value = ((Double)iterator.next()).doubleValue(); |
430 | 15 | if (!this.getKeyColor(value).equals(that.getKeyColor(value))) |
431 | 1 | return false; |
432 | 14 | } |
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434 | 4 | return true; |
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} |
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} |