我有一个XYPlot,上面有系列和一些没有填充的动态添加的形状注释(因此每个系列点都可见)。是否可以在注释上显示系列工具提示(显示鼠标指针当前指向的系列点的坐标)?或者如何重新排列元素以使工具提示可见。
我有一个XYPlot,上面有系列和一些没有填充的动态添加的形状注释(因此每个系列点都可见)。是否可以在注释上显示系列工具提示(显示鼠标指针当前指向的系列点的坐标)?或者如何重新排列元素以使工具提示可见。
Layer.BACKGROUND
中将它们添加到渲染器中。如下所示,圆圈不会遮挡(20,20)处的工具提示。还要注意,(10,10)没有受到线注释的影响,而(30,30)被弧形遮挡了。
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.util.Random;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.annotations.XYLineAnnotation;
import org.jfree.chart.annotations.XYShapeAnnotation;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.Layer;
/**
* @see https://dev59.com/5FnUa4cB1Zd3GeqPbIWb
* @see http://stackoverflow.com/questions/6604211
*/
public class ArcTest {
private static final Random r = new Random();
private static final Color blue = Color.blue;
private static final BasicStroke stroke = new BasicStroke(2.0f);
private static final double PI = 180d;
private static final int X = 8;
private static final int Y = 0;
private static final int W = 6 * X;
private static final int H = 3 * X;
public static void main(String[] args) {
JFreeChart chart = ChartFactory.createXYLineChart(
"ArcTest", "X", "Y", createDataset(),
PlotOrientation.VERTICAL, true, true, false);
XYPlot plot = chart.getXYPlot();
XYLineAndShapeRenderer renderer =
(XYLineAndShapeRenderer) plot.getRenderer();
renderer.setBaseShapesVisible(true);
Ellipse2D.Double circle = new Ellipse2D.Double(X, X, 20, 20);
renderer.addAnnotation(new XYShapeAnnotation(
circle, stroke, blue), Layer.BACKGROUND);
XYLineAnnotation line = new XYLineAnnotation(X, Y, X, H, stroke, blue);
plot.addAnnotation(line);
Arc2D.Double arc = new Arc2D.Double(X, Y, W, 2 * H, PI, PI, Arc2D.OPEN);
plot.addAnnotation(new XYShapeAnnotation(arc, stroke, blue));
ChartFrame frame = new ChartFrame("Test", chart);
frame.pack();
frame.setVisible(true);
}
private static XYDataset createDataset() {
XYSeriesCollection result = new XYSeriesCollection();
XYSeries series = new XYSeries("ArcTest");
series.add(0, 0);
series.add(10, 10);
series.add(20, 20);
series.add(30, 30);
series.add(W, W);
result.addSeries(series);
return result;
}
}