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1
19 package jcckit.plot;
20
21 import java.util.StringTokenizer  ;
22
23 import jcckit.util.ConfigParameters;
24 import jcckit.util.TicLabelFormat;
25
26
60 public class TicLabelMap implements TicLabelFormat {
61 public static final String MAP_KEY = "map";
62
63 private static class MapItem {
64 private double _min = Double.MIN_VALUE;
65 private double _max = Double.MAX_VALUE;
66 private final String label;
67 public MapItem(String item) {
68 int index = item.indexOf('=');
69 if (index < 0) {
70 label = item;
71 } else {
72 label = item.substring(index + 1).trim();
73 item = item.substring(0, index).trim();
74 index = item.indexOf(':');
75 if (index < 0) {
76 _min = new Double (item).doubleValue();
77 _max = _min == 0 ? Double.MIN_VALUE : _min * 1.000001d;
78 _min = _min * 0.999999d;
79 if (_min > _max) {
80 double z = _min;
81 _min = _max;
82 _max = z;
83 }
84 } else {
85 _min = new Double (item.substring(0, index)).doubleValue();
86 _max = new Double (item.substring(index + 1)).doubleValue();
87 }
88 }
89 }
90 public boolean isInside(double value) {
91 return value >= _min && value < _max;
92 }
93 }
94
95 private final MapItem[] _map;
96
97
107 public TicLabelMap(ConfigParameters config) {
108 StringTokenizer tokenizer = new StringTokenizer (config.get(MAP_KEY), ";");
109 _map = new MapItem[tokenizer.countTokens()];
110 for (int i = 0; i < _map.length; i++)
111 {
112 String item = tokenizer.nextToken();
113 try {
114 _map[i] = new MapItem(item.trim());
115 } catch (NumberFormatException e) {
116 throw new NumberFormatException ("Item '" + item + "' of "
117 + config.getFullKey(MAP_KEY) + " has an invalid number.");
118 }
119 }
120 }
121
122
126 public String form(double ticValue) {
127 String result = "?";
128 for (int i = 0; i < _map.length; i++) {
129 if (_map[i].isInside(ticValue)) {
130 result = _map[i].label;
131 break;
132 }
133 }
134 return result;
135 }
136 }
137 |
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