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io.mateu.mdd.vaadin.components.charts.PieChart Maven / Gradle / Ivy
package io.mateu.mdd.vaadin.components.charts;
import com.byteowls.vaadin.chartjs.ChartJs;
import com.byteowls.vaadin.chartjs.config.PieChartConfig;
import com.byteowls.vaadin.chartjs.data.PieDataset;
import com.byteowls.vaadin.chartjs.options.InteractionMode;
import com.byteowls.vaadin.chartjs.options.types.PieChartOptions;
import com.google.common.base.Strings;
import com.vaadin.data.provider.ListDataProvider;
import com.vaadin.data.provider.Query;
import com.vaadin.ui.Composite;
import java.util.*;
import java.util.stream.Collectors;
public class PieChart extends Composite {
private static String[] colores = {"red", "blue", "green", "orange", "darkgrey", "cyan", "yellow", "brown"};
private static Random randBGColor = new Random();
private final String title;
private ListDataProvider dataProvider;
public PieChart(ListDataProvider dataProvider) {
this(null, dataProvider);
}
public PieChart(String title, ListDataProvider dataProvider) {
this.title = title;
this.dataProvider = dataProvider;
setCompositionRoot(new ChartJs(createConfig(title, dataProvider)));
setWidth("100%");
/*
ChartJs chart = new ChartJs(barConfig);
chart.setJsLoggingEnabled(true);
chart.addClickListener((a,b) -> DemoUtils.notification(a, b, barConfig.data().getDatasets().get(a)));
chart.addLegendClickListener((dataSetIndex,visible, visibleDatasets) -> DemoUtils.legendNotification(dataSetIndex, visible, visibleDatasets));
*/
}
private PieChartConfig createConfig(String title, ListDataProvider dataProvider) {
Map> data = new HashMap<>();
List keys = new ArrayList<>();
List labels = new ArrayList<>();
Map dataSets = new HashMap<>();
dataProvider.fetch(new Query<>()).forEach(r -> {
Map l = data.get(r.getLine());
if (l == null) {
data.put(r.getLine(), l = new HashMap<>());
}
l.put(r.getLabel(), r.getValue());
if (!keys.contains(r.getLine())) keys.add(r.getLine());
if (!labels.contains(r.getLabel())) labels.add(r.getLabel());
});
PieChartConfig barConfig = new PieChartConfig();
barConfig.
data()
.labelsAsList(labels.stream().map(l -> "" + l).collect(Collectors.toList()));
keys.forEach(k -> {
dataSets.computeIfAbsent(k, l -> {
PieDataset ds = new PieDataset();
ds.label("" + l);
ds.backgroundColor(colores);
barConfig.data().addDataset(ds);
return ds;
});
});
/*
.addDataset(
new BarDataset().backgroundColor("rgba(220,220,220,0.5)").label("Dataset 1").yAxisID("y-axis-1"))
.addDataset(
new BarDataset().backgroundColor("rgba(151,187,205,0.5)").label("Dataset 2").yAxisID("y-axis-2").hidden(true))
.addDataset(
new BarDataset().backgroundColor(
ColorUtils.randomColor(0.7), ColorUtils.randomColor(0.7), ColorUtils.randomColor(0.7),
ColorUtils.randomColor(0.7), ColorUtils.randomColor(0.7), ColorUtils.randomColor(0.7),
ColorUtils.randomColor(0.7)).label("Dataset 3").yAxisID("y-axis-1"))
.and();
*/
PieChartOptions options = barConfig.
options();
options.responsive(true)
.hover()
.mode(InteractionMode.INDEX)
.intersect(true)
.animationDuration(400)
.and();
if (!Strings.isNullOrEmpty(title)) options.title()
.display(true)
.text(title)
.and();
options.done();
for (Object k : keys) {
PieDataset lds = dataSets.get(k);
List dl = new ArrayList<>();
for (Object l : labels) {
dl.add(data.get(k).getOrDefault(l, 0d));
}
lds.dataAsList(dl);
//lds.randomBackgroundColors(true);
}
return barConfig;
}
private String randomBGColor() {
return colores[randBGColor.nextInt(colores.length)];
}
}
