Java jfreechart剪辑问题

时间:2013-10-24 18:38:02

标签: java swing jscrollpane jfreechart clipping

我正在尝试制作一个类似于jfreechart演示中的表盘的类。 但是,如果窗口小于打印拨盘所需的窗口,我希望带有拨盘的框架可滚动。我使用Scroll Pane实现了这个目的,但是由于表盘有重量级组件,它们在视口外面和滚动条上面打印,我不能拥有它。

我为测试此功能而编写的代码是:

编辑:我让代码更小,试图让它成为SSCCE(这是我第一次发布一个问题,如果它仍然太大,那就很抱歉)

编辑2:我已经意识到这是我正在使用(并且必须使用)的jfreechart发行版中的一个问题,即1.0.9。使用当前版本的jfreechart无法重现此错误。

import java.awt.*;
import javax.swing.JPanel;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.dial.*;
import org.jfree.data.general.DefaultValueDataset;
import org.jfree.ui.*;

public class DialDoubleNeedle extends JPanel{

    private DefaultValueDataset dataset1;
    private DefaultValueDataset dataset2;
    private JFreeChart chart;
    public DialDoubleNeedle() {
        super();

        this.dataset1 = new DefaultValueDataset(0.10);
        this.dataset2 = new DefaultValueDataset(0.50);

        // get data for diagrams
        DialPlot plot = new DialPlot();
        plot.setView(0.0, 0.0, 1.0, 1.0);
        plot.setDataset(0, this.dataset1);
        plot.setDataset(1, this.dataset2);
        StandardDialFrame dialFrame = new StandardDialFrame();
        dialFrame.setBackgroundPaint(Color.lightGray);
        dialFrame.setForegroundPaint(Color.darkGray);        
        plot.setDialFrame(dialFrame);

        GradientPaint gp = new GradientPaint(new Point(), 
                new Color(255, 255, 255), new Point(), 
                new Color(170, 170, 220));

        DialBackground db = new DialBackground(gp);
        db.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL));
        plot.setBackground(db);
        DialTextAnnotation annotation1 = new DialTextAnnotation("m/s");
        annotation1.setFont(new Font("Dialog", Font.BOLD, 14));
        annotation1.setRadius(0.7);

        plot.addLayer(annotation1);

        DialValueIndicator dvi = new DialValueIndicator(0);
        dvi.setFont(new Font("Dialog", Font.PLAIN, 10));
        dvi.setOutlinePaint(Color.darkGray);
        dvi.setRadius(0.60);
        dvi.setAngle(-103.0);
        dvi.setNumberFormat(new java.text.DecimalFormat("0.00"));
        plot.addLayer(dvi);

        DialValueIndicator dvi2 = new DialValueIndicator(1);
        dvi2.setFont(new Font("Dialog", Font.PLAIN, 10));
        dvi2.setOutlinePaint(Color.red);
        dvi2.setRadius(0.60);
        dvi2.setAngle(-77.0);
        dvi2.setNumberFormat(new java.text.DecimalFormat("0.00"));
        plot.addLayer(dvi2);

        StandardDialScale scale = new StandardDialScale(0, 1, -120, -300, 0.1, 5);
        scale.setTickRadius(0.88);
        scale.setTickLabelOffset(0.15);
        scale.setTickLabelFont(new Font("Dialog", Font.PLAIN, 14));
        plot.addScale(0, scale);

        StandardDialScale scale2 = new StandardDialScale(0, 1, -120, -300, 0.1, 5);
        scale2.setTickRadius(0.50);
        scale2.setTickLabelOffset(0.15);
        scale2.setTickLabelFont(new Font("Dialog", Font.PLAIN, 10));
        scale2.setMajorTickPaint(Color.red);
        plot.addScale(1, scale2);
        plot.mapDatasetToScale(1, 1);

        DialPointer needle2 = new DialPointer.Pin(1);
        needle2.setRadius(0.55);
        plot.addLayer(needle2);

        DialPointer needle = new DialPointer.Pointer(0);
        plot.addLayer(needle);

        DialCap cap = new DialCap();
        cap.setRadius(0.10);
        plot.setCap(cap);

        chart = new JFreeChart(plot);
        chart.setTitle("Title");
        ChartPanel cp1 = new ChartPanel(chart);
        add(cp1);


    }

    void setTitle(String title){
        chart.setTitle(title);
        return;
    }


    public static void main(final String args[]) {
        final javax.swing.JFrame test = new javax.swing.JFrame();
        test.addWindowListener(new java.awt.event.WindowAdapter() {
            @Override
            public void windowClosing(final java.awt.event.WindowEvent e) {
                System.exit(0);
            }
        });

        final JPanel jpanel1 = new JPanel();

        DialDoubleNeedle app1 = new DialDoubleNeedle();
        app1.setTitle("Tittle 1");

        jpanel1.add(app1);

        final javax.swing.JScrollPane scrollPane = new javax.swing.JScrollPane();

        scrollPane.setViewportView(jpanel1);

        test.getContentPane().add(scrollPane);
        test.pack();
        test.setVisible(true);


        int i;
        Number v;   
        for(i=0; i<1000000000; i++){
            if(i==(1000000000-1)){
                i=0;
                v=app1.dataset1.getValue();
                app1.dataset1.setValue(v.doubleValue()+0.01);
            }
        }

    }
}

如果您编译上面的代码,您可以看到它运行时它看起来很好但是如果你收缩它最终会在滚动条上获得一些拨号部分(重量级的部分)。 我该怎么做才能解决这个问题?

1 个答案:

答案 0 :(得分:1)

据我所知,JFreechartorg.jfree.chart.plot.dial.*都不包含重量级组件。您的示例通常会为我调整大小。几点说明:

  • 如果您真的要覆盖setPreferredSize(),请不要使用getPreferredSize(),如here所示并讨论here

  • 应在event dispatch thread构建和操作Swing GUI对象。

  • 不要在initial thread上循环,而是使用javax.swing.Timer来调动动画。

  • 您不恰当地使用GridBagConstraints。简单的垂直GridLayout效果很好,无需在面板或滚动窗格中显示任何set*Size()

    final JPanel jpanel1 = new JPanel(new GridLayout(0, 1));
    
  • JFrame可以设置默认关闭操作,从而无需WindowListener

    test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
相关问题