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19 package jcckit.plot;
20
21 import jcckit.graphic.BasicGraphicAttributes;
22 import jcckit.graphic.GraphicalElement;
23 import jcckit.graphic.GraphicalComposite;
24 import jcckit.graphic.GraphicAttributes;
25 import jcckit.graphic.GraphPoint;
26 import jcckit.graphic.Polygon;
27 import jcckit.graphic.Rectangle;
28 import jcckit.graphic.ShapeAttributes;
29 import jcckit.graphic.Text;
30 import jcckit.graphic.TextAttributes;
31 import jcckit.util.ConfigData;
32 import jcckit.util.ConfigParameters;
33 import jcckit.util.ConfigParametersBasedConfigData;
34 import jcckit.util.Factory;
35 import jcckit.util.PropertiesBasedConfigData;
36
37 import java.util.Properties  ;
38
39
40
45 public class Legend {
46
47 public static final String UPPER_RIGHT_CORNER_KEY = "upperRightCorner",
48 BOX_WIDTH_KEY = "boxWidth",
49 BOX_HEIGHT_KEY = "boxHeight",
50 BOX_ATTRIBUTES_KEY = "boxAttributes",
51 TITLE_KEY = "title",
52 TITLE_DISTANCE_KEY = "titleDistance",
53 TITLE_ATTRIBUTES_KEY = "titleAttributes",
54 LEFT_DISTANCE_KEY = "leftDistance",
55 BOTTOM_DISTANCE_KEY = "bottomDistance",
56 TOP_DISTANCE_KEY = "topDistance",
57 LINE_LENGTH_KEY = "lineLength",
58 SYMBOL_SIZE_KEY = "symbolSize",
59 CURVE_TITLE_DISTANCE_KEY = "curveTitleDistance",
60 CURVE_TITLE_ATTRIBUTES_KEY
61 = "curveTitleAttributes";
62
63 private final GraphicalComposite _box;
64 private final TextAttributes _curveTitleAttributes;
65 private final double _xSymbol;
66 private final double _xText;
67 private final double _yBase;
68 private final double _yLastRow;
69 private final double _length;
70 private final double _size;
71
72
134 public Legend(ConfigParameters config) {
135 config = mergeWithDefaultConfig(config);
136 GraphPoint corner
137 = new GraphPoint(config.getDoubleArray(UPPER_RIGHT_CORNER_KEY,
138 new double[] {0.94, 0.54}));
139 double width = config.getDouble(BOX_WIDTH_KEY, 0.2);
140 double height = config.getDouble(BOX_HEIGHT_KEY, 0.1);
141 _curveTitleAttributes = (TextAttributes) Factory.create(
142 config.getNode(CURVE_TITLE_ATTRIBUTES_KEY));
143 _xSymbol = corner.getX() - width
144 + config.getDouble(LEFT_DISTANCE_KEY, 0.01);
145 _yBase = corner.getY() - config.getDouble(TOP_DISTANCE_KEY, 0.04);
146 _yLastRow = corner.getY() - height
147 + config.getDouble(BOTTOM_DISTANCE_KEY, 0.02);
148 _length = config.getDouble(LINE_LENGTH_KEY, 0.035);
149 _size = config.getDouble(SYMBOL_SIZE_KEY, 0.01);
150 _xText = _xSymbol + _length
151 + config.getDouble(CURVE_TITLE_DISTANCE_KEY, 0.005);
152
153 _box = new GraphicalComposite(null);
154 double xCenter = corner.getX() - width / 2;
155 _box.addElement(new Rectangle(
156 new GraphPoint(xCenter, corner.getY() - height / 2), width, height,
157 (GraphicAttributes) Factory.create(
158 config.getNode(BOX_ATTRIBUTES_KEY))));
159 _box.addElement(new Text(
160 new GraphPoint(xCenter, corner.getY()
161 - config.getDouble(TITLE_DISTANCE_KEY, 0.005)),
162 config.get(TITLE_KEY, "Legend"),
163 (TextAttributes) Factory.create(
164 config.getNode(TITLE_ATTRIBUTES_KEY))));
165 }
166
167 private ConfigParameters mergeWithDefaultConfig(ConfigParameters config) {
168 Properties p = new Properties ();
169 p.put(BOX_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
170 ShapeAttributes.class.getName());
171 p.put(BOX_ATTRIBUTES_KEY + '/'
172 + ShapeAttributes.FILL_COLOR_KEY, "0xffffff");
173 p.put(BOX_ATTRIBUTES_KEY + '/'
174 + ShapeAttributes.LINE_COLOR_KEY, "0");
175 p.put(TITLE_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
176 BasicGraphicAttributes.class.getName());
177 p.put(TITLE_ATTRIBUTES_KEY + '/'
178 + BasicGraphicAttributes.HORIZONTAL_ANCHOR_KEY, "center");
179 p.put(TITLE_ATTRIBUTES_KEY + '/'
180 + BasicGraphicAttributes.VERTICAL_ANCHOR_KEY, "top");
181 p.put(CURVE_TITLE_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
182 BasicGraphicAttributes.class.getName());
183 ConfigData cd = new PropertiesBasedConfigData(p);
184 cd = new ConfigParametersBasedConfigData(config, new ConfigParameters(cd));
185 return new ConfigParameters(cd);
186 }
187
188
192 public GraphicalElement getBox() {
193 return _box;
194 }
195
196
208 public GraphicalElement createSymbol(int curveIndex, int numberOfCurves,
209 SymbolFactory factory,
210 boolean withLine,
211 GraphicAttributes lineAttributes) {
212 GraphicalComposite result = new GraphicalComposite(null);
213 double y = calculateBaseLine(curveIndex, numberOfCurves);
214 if (withLine) {
215 Polygon line = new Polygon(lineAttributes, false);
216 line.addPoint(new GraphPoint(_xSymbol, y));
217 line.addPoint(new GraphPoint(_xSymbol + _length, y));
218 result.addElement(line);
219 }
220 if (factory != null) {
221 result.addElement(factory.createLegendSymbol(
222 new GraphPoint(_xSymbol + _length / 2, y), _size));
223 }
224 return result;
225 }
226
227 private double calculateBaseLine(int curveIndex, int numberOfCurves) {
228 if (numberOfCurves > 1) {
229 return _yBase + ((_yLastRow - _yBase) / (numberOfCurves - 1))
230 * curveIndex;
231 } else {
232 return 0.5 * (_yBase + _yLastRow);
233 }
234 }
235
236
244 public GraphicalElement createCurveTitle(int curveIndex, int numberOfCurves,
245 String title) {
246 return new Text(new GraphPoint(_xText, calculateBaseLine(curveIndex,
247 numberOfCurves)),
248 title, _curveTitleAttributes);
249 }
250 }
251 |
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