jcckit.plot.Legend Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of plantuml Show documentation
Show all versions of plantuml Show documentation
PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/*
* Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details
* (http://www.gnu.org/copyleft/lesser.html).
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package jcckit.plot;
import java.util.Properties;
import jcckit.graphic.BasicGraphicAttributes;
import jcckit.graphic.GraphPoint;
import jcckit.graphic.GraphicAttributes;
import jcckit.graphic.GraphicalComposite;
import jcckit.graphic.GraphicalElement;
import jcckit.graphic.Polygon;
import jcckit.graphic.Rectangle;
import jcckit.graphic.ShapeAttributes;
import jcckit.graphic.Text;
import jcckit.graphic.TextAttributes;
import jcckit.util.ConfigData;
import jcckit.util.ConfigParameters;
import jcckit.util.ConfigParametersBasedConfigData;
import jcckit.util.Factory;
import jcckit.util.PropertiesBasedConfigData;
/**
* Helper class for creating the legend of a {@link Plot}.
*
* @author Franz-Josef Elmer
*/
public class Legend {
/** Configuration parameter key. */
public static final String UPPER_RIGHT_CORNER_KEY = "upperRightCorner",
BOX_WIDTH_KEY = "boxWidth",
BOX_HEIGHT_KEY = "boxHeight",
BOX_ATTRIBUTES_KEY = "boxAttributes",
TITLE_KEY = "title",
TITLE_DISTANCE_KEY = "titleDistance",
TITLE_ATTRIBUTES_KEY = "titleAttributes",
LEFT_DISTANCE_KEY = "leftDistance",
BOTTOM_DISTANCE_KEY = "bottomDistance",
TOP_DISTANCE_KEY = "topDistance",
LINE_LENGTH_KEY = "lineLength",
SYMBOL_SIZE_KEY = "symbolSize",
CURVE_TITLE_DISTANCE_KEY = "curveTitleDistance",
CURVE_TITLE_ATTRIBUTES_KEY
= "curveTitleAttributes";
private final GraphicalComposite _box;
private final TextAttributes _curveTitleAttributes;
private final double _xSymbol;
private final double _xText;
private final double _yBase;
private final double _yLastRow;
private final double _length;
private final double _size;
/**
* Creates an instance from the specified configuration parameters.
* All numbers (lengths, fontsizes, linethicknesses, etc.) are in
* device-independent units.
*
* Key & Default Value Type Mandatory
* Description bottomDistance = 0.02
* double no
* Distance between the last row and the bottom of the legend box.
* boxAttributes = default values of
* {@link ShapeAttributes} with a white fill color.
* ConfigParameters no
* Attributes of the legend box. boxHeight = 0.1
* double no
* Height of the legend box. boxWidth = 0.2
* double no
* Width of the legend box. curveTitleAttributes = default values of
* {@link BasicGraphicAttributes}
* ConfigParameters no
* Text attributes of curve titles printed in the legend. curveTitleDistance = 0.005
* double no
* Horizontal distance between the line part of the legend symbol
* and the curve title. leftDistance = 0.01
* double no
* Horizontal distance between the line part of the legend symbol
* and the left border of the legend box. lineLength = 0.035
* double no
* Length of the line part of the legend symbol. symbolSize = 0.01
* double no
* Size of the symbol part of the legend symbol. Will be the
* size argument of {@link SymbolFactory#createLegendSymbol
* createLegendSymbol} in a {@link SymbolFactory}. titleAttributes = default values of
* {@link BasicGraphicAttributes} with a text anchor CENTER
* TOP.
* ConfigParameters no
* Text attributes of the title of the legend box. title = Legend
* String no
* Title of the legend box. titleDistance = 0.005
* double no
* Distance between the center of the upper line of the legend box
* and the anchor of the legend title. topDistance = 0.04
* double no
* Distance between the first row and the top of the legend box.
* upperRightCorner = 0.94, 0.54
* double[] no
* Position of the upper-right corner of the legend box.
*/
public Legend(ConfigParameters config) {
config = mergeWithDefaultConfig(config);
GraphPoint corner
= new GraphPoint(config.getDoubleArray(UPPER_RIGHT_CORNER_KEY,
new double[] {0.94, 0.54}));
double width = config.getDouble(BOX_WIDTH_KEY, 0.2);
double height = config.getDouble(BOX_HEIGHT_KEY, 0.1);
_curveTitleAttributes = (TextAttributes) Factory.create(
config.getNode(CURVE_TITLE_ATTRIBUTES_KEY));
_xSymbol = corner.getX() - width
+ config.getDouble(LEFT_DISTANCE_KEY, 0.01);
_yBase = corner.getY() - config.getDouble(TOP_DISTANCE_KEY, 0.04);
_yLastRow = corner.getY() - height
+ config.getDouble(BOTTOM_DISTANCE_KEY, 0.02);
_length = config.getDouble(LINE_LENGTH_KEY, 0.035);
_size = config.getDouble(SYMBOL_SIZE_KEY, 0.01);
_xText = _xSymbol + _length
+ config.getDouble(CURVE_TITLE_DISTANCE_KEY, 0.005);
_box = new GraphicalComposite(null);
double xCenter = corner.getX() - width / 2;
_box.addElement(new Rectangle(
new GraphPoint(xCenter, corner.getY() - height / 2), width, height,
(GraphicAttributes) Factory.create(
config.getNode(BOX_ATTRIBUTES_KEY))));
_box.addElement(new Text(
new GraphPoint(xCenter, corner.getY()
- config.getDouble(TITLE_DISTANCE_KEY, 0.005)),
config.get(TITLE_KEY, "Legend"),
(TextAttributes) Factory.create(
config.getNode(TITLE_ATTRIBUTES_KEY))));
}
private ConfigParameters mergeWithDefaultConfig(ConfigParameters config) {
Properties p = new Properties();
p.put(BOX_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
ShapeAttributes.class.getName());
p.put(BOX_ATTRIBUTES_KEY + '/'
+ ShapeAttributes.FILL_COLOR_KEY, "0xffffff");
p.put(BOX_ATTRIBUTES_KEY + '/'
+ ShapeAttributes.LINE_COLOR_KEY, "0");
p.put(TITLE_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
BasicGraphicAttributes.class.getName());
p.put(TITLE_ATTRIBUTES_KEY + '/'
+ BasicGraphicAttributes.HORIZONTAL_ANCHOR_KEY, "center");
p.put(TITLE_ATTRIBUTES_KEY + '/'
+ BasicGraphicAttributes.VERTICAL_ANCHOR_KEY, "top");
p.put(CURVE_TITLE_ATTRIBUTES_KEY + '/' + Factory.CLASS_NAME_KEY,
BasicGraphicAttributes.class.getName());
ConfigData cd = new PropertiesBasedConfigData(p);
cd = new ConfigParametersBasedConfigData(config, new ConfigParameters(cd));
return new ConfigParameters(cd);
}
/**
* Returns the legend box with title but without legend symbols and curve
* titles.
*/
public GraphicalElement getBox() {
return _box;
}
/**
* Creates the symbol part of a legend symbol.
* @param curveIndex Index of the curve. Will be needed to calculate the
* y-coordinate of the symbol.
* @param numberOfCurves Number of curves. Will be needed to calculate the
* y-coordinate of the symbol.
* @param factory Factory for the symbol part of the legend symbol.
* Can be null.
* @param withLine true if the line part of the legend symbol
* should be created.
* @param lineAttributes Attributes of the line part.
*/
public GraphicalElement createSymbol(int curveIndex, int numberOfCurves,
SymbolFactory factory,
boolean withLine,
GraphicAttributes lineAttributes) {
GraphicalComposite result = new GraphicalComposite(null);
double y = calculateBaseLine(curveIndex, numberOfCurves);
if (withLine) {
Polygon line = new Polygon(lineAttributes, false);
line.addPoint(new GraphPoint(_xSymbol, y));
line.addPoint(new GraphPoint(_xSymbol + _length, y));
result.addElement(line);
}
if (factory != null) {
result.addElement(factory.createLegendSymbol(
new GraphPoint(_xSymbol + _length / 2, y), _size));
}
return result;
}
private double calculateBaseLine(int curveIndex, int numberOfCurves) {
if (numberOfCurves > 1) {
return _yBase + ((_yLastRow - _yBase) / (numberOfCurves - 1))
* curveIndex;
} else {
return 0.5 * (_yBase + _yLastRow);
}
}
/**
* Creates the title part of a legend symbol.
* @param curveIndex Index of the curve. Will be needed to calculate the
* y-coordinate of the title.
* @param numberOfCurves Number of curves. Will be needed to calculate the
* y-coordinate of the symbol.
* @param title Title text.
*/
public GraphicalElement createCurveTitle(int curveIndex, int numberOfCurves,
String title) {
return new Text(new GraphPoint(_xText, calculateBaseLine(curveIndex,
numberOfCurves)),
title, _curveTitleAttributes);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy