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Java Fx Zoom Chart
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package br.com.example;
import java.util.Random;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.geometry.Bounds;
import javafx.geometry.Rectangle2D;
import javafx.scene.Scene;
import javafx.scene.chart.AreaChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart.Data;
import javafx.scene.chart.XYChart.Series;
import javafx.scene.control.ScrollPane;
import javafx.scene.input.ScrollEvent;
import javafx.scene.shape.Line;
import javafx.stage.Screen;
import javafx.stage.Stage;
/**
*
* @author luizrobertofreitas
*/
public class ResizableChartWithinScrollPane extends Application {
public static void main(String... args) {
launch(args);
}
@Override
public void start(Stage stage) throws Exception {
stage.setTitle("Scroll Me");
Random random = new Random(12);
NumberAxis xAxis = new NumberAxis("Time: s", 0, 4, 1);
xAxis.setAutoRanging(false);
NumberAxis yAxis = new NumberAxis();
final ObservableList<Data> seriesData = FXCollections.observableArrayList();
Series series = new Series("Rotation", seriesData);
final ObservableList<Data> series2Data = FXCollections.observableArrayList();
Series series2 = new Series("Speed", series2Data);
double tempoXAxis = 0.0;
for (int i = 0; i < 100; i++) {
seriesData.add(new Data(tempoXAxis, random.nextInt(12)));
series2Data.add(new Data(tempoXAxis, random.nextInt(12)));
tempoXAxis += 0.04;
}
final ObservableList<Series> allSeriesData = FXCollections.observableArrayList(series, series2);
final AreaChart chart = new AreaChart(xAxis, yAxis);
chart.getData().addAll(allSeriesData);
chart.setPrefSize(500, 200);
final ScrollPane pane = new ScrollPane();
pane.setContent(chart);
pane.setPrefSize(600, 300);
pane.setContent(chart);
pane.viewportBoundsProperty().addListener(new ChangeListener<Bounds>() {
@Override
public void changed(ObservableValue<? extends Bounds> observableValue, Bounds oldBounds, Bounds newBounds) {
chart.setMinSize(Math.max(chart.getPrefWidth(), newBounds.getWidth()), Math.max(chart.getPrefHeight(), newBounds.getHeight()));
pane.setPannable((chart.getPrefWidth() > newBounds.getWidth()) || (chart.getPrefHeight() > newBounds.getHeight()));
}
});
chart.setOnScroll(new EventHandler<ScrollEvent>() {
@Override
public void handle(ScrollEvent ev) {
double zoomFactor = 1.05;
double deltaY = ev.getDeltaY();
if (deltaY < 0) {
zoomFactor = 2 - zoomFactor;
}
System.out.println("DeltaX = " + ev.getDeltaX());
System.out.println("DeltaY = " + ev.getDeltaY());
System.out.println("Zoomfactor = " + zoomFactor);
NumberAxis xAxisLocal = ((NumberAxis) chart.getXAxis());
xAxisLocal.setUpperBound(xAxisLocal.getUpperBound() * zoomFactor);
xAxisLocal.setLowerBound(xAxisLocal.getLowerBound() * zoomFactor);
xAxisLocal.setTickUnit(xAxisLocal.getTickUnit() * zoomFactor);
ev.consume();
}
});
Line cursorLine = new Line();
Scene scene = new Scene(pane);
stage.setScene(scene);
Screen screen = Screen.getPrimary();
Rectangle2D bounds = screen.getVisualBounds();
stage.setX(bounds.getMinX());
stage.setY(bounds.getMinY());
stage.setWidth(bounds.getWidth());
stage.setHeight(bounds.getHeight());
stage.show();
}
}
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