/*
* Apache License
* Version 2.0, January 2004
* http://www.apache.org/licenses/
*
* Copyright 2013 Aurelian Tutuianu
* Copyright 2014 Aurelian Tutuianu
* Copyright 2015 Aurelian Tutuianu
* Copyright 2016 Aurelian Tutuianu
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package rapaio.graphics.plot.plotcomp;
import rapaio.graphics.base.Range;
import rapaio.graphics.opt.GOpt;
import rapaio.graphics.plot.Plot;
import rapaio.graphics.plot.PlotComponent;
import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.util.stream.IntStream;
/**
* @author <a href="mailto:padreati@yahoo.com">Aurelian Tutuianu</a>
*/
public class Legend extends PlotComponent {
private static final long serialVersionUID = 7360504551525942239L;
public static final int UP_LEFT = 0;
private final double x;
private final double y;
private final int place;
public Legend(double x, double y, GOpt... opts) {
this.x = x;
this.y = y;
this.place = -1;
this.options.apply(opts);
}
public Legend(int place, GOpt... opts) {
this.x = -1;
this.y = -1;
this.place = place;
this.options.apply(opts);
}
@Override
public void initialize(Plot parent) {
super.initialize(parent);
options.setColorDefault(gOpts -> IntStream.range(1, 256).mapToObj(i -> options.getPalette().getColor(i)).toArray(Color[]::new));
}
@Override
public void paint(Graphics2D g2d) {
// TODO I've commented that because it seems like it needs a better treatment
// g2d.setFont(MARKERS_FONT);
String[] labels = options.getLabels();
double minHeight = Double.MAX_VALUE;
for (String string : labels) {
double height = g2d.getFontMetrics().getStringBounds(string, g2d).getHeight();
minHeight = Math.min(minHeight, height);
}
double size = g2d.getFontMetrics().getStringBounds("aa", g2d).getWidth();
double xstart = parent.xScale(x);
double ystart = parent.yScale(y);
if(place!=-1) {
switch (place) {
case UP_LEFT:
xstart = parent.xScale(parent.getRange().x1());
ystart = parent.yScale(parent.getRange().y2());
}
}
for (int i = 0; i < labels.length; i++) {
g2d.setColor(options.getColor(i));
g2d.draw(new Rectangle2D.Double(xstart, ystart - minHeight / 3, size, 1));
g2d.setColor(Color.BLACK);
g2d.drawString(labels[i], (int) (xstart + size + size / 2), (int) (ystart));
ystart += minHeight + 1;
}
}
@Override
public Range buildRange() {
return null;
}
}