添加自定义字体的JFreeChart

Question

我想下面Font添加到我的JFreeChart标题： http://www.urbanfonts.com/fonts/Back_to_Bay_6.htm

试图用代码来实现这一目标：

InputStream is = new FileInputStream("backtobay.ttf"); 
java.awt.Font customFont = java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, is); 
customFont = customFont.deriveFont(24f); 
chart.getTitle().setFont(customFont); 

以正常字体结束：

任何想法为什么？ 它有可能做到这一点，我正在运行Mac？

public class Function2DDemo1 extends ApplicationFrame { 

    public Function2DDemo1(String title) { 
     super(title); 
     JPanel chartPanel = createDemoPanel(); 
     chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); 
     setContentPane(chartPanel); 
    } 

    private static JFreeChart createChart(XYDataset dataset) { 
     // create the chart... 
     JFreeChart chart = ChartFactory.createXYLineChart("Function2DDemo1 ", // chart 
                       // title 
     "X", // x axis label 
     "Y", // y axis label 
     dataset, // data 
     PlotOrientation.VERTICAL, true, // include legend 
     true, // tooltips 
     false // urls 
     ); 

     // SET A CUSTOM TITLE FONT 
     try { 
      InputStream is = new FileInputStream("backtobay.ttf"); 
      java.awt.Font customFont = java.awt.Font.createFont(java.awt.Font.TRUETYPE_FONT, is); 
      customFont = customFont.deriveFont(24f); 
      chart.getTitle().setFont(customFont); 
      // This prints "Back to Bay 6" 
      System.out.println(customFont.getFontName()); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (FontFormatException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     XYPlot plot = (XYPlot) chart.getPlot(); 
     plot.getDomainAxis().setLowerMargin(0.0); 
     plot.getDomainAxis().setUpperMargin(0.0); 
     return chart; 
    } 

    public static XYDataset createDataset() { 
     XYDataset result = DatasetUtilities.sampleFunction2D(new X2(), -4.0, 4.0, 40, "f(x)"); 
     return result; 
    } 

    public static JPanel createDemoPanel() { 
     JFreeChart chart = createChart(createDataset()); 
     return new ChartPanel(chart); 
    } 

    static class X2 implements Function2D { 

     public double getValue(double x) { 
      return x * x + 2; 
     } 
    } 

    public static void main(String[] args) { 
     Function2DDemo1 demo = new Function2DDemo1("JFreeChart: Function2DDemo1.java"); 
     demo.pack(); 
     RefineryUtilities.centerFrameOnScreen(demo); 
     demo.setVisible(true); 
    } 
} 

Answer 1

我得到了许多较老的行为良好的字体的预期结果，如下所示。有很多方法会导致错误。例如，/Library/Fonts中有很多较新的.ttf字体，我在createFont()中获得java.awt.FontFormatException: Font name not found。您可以尝试在另一个上下文中验证字体。

为试：

import java.awt.EventQueue; 
import java.awt.Font; 
import java.awt.FontFormatException; 
import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.IOException; 
import javax.swing.JPanel; 
import org.jfree.chart.ChartFactory; 
import org.jfree.chart.ChartPanel; 
import org.jfree.chart.JFreeChart; 
import org.jfree.chart.plot.PlotOrientation; 
import org.jfree.chart.plot.XYPlot; 
import org.jfree.data.function.Function2D; 
import org.jfree.data.general.DatasetUtilities; 
import org.jfree.data.xy.XYDataset; 
import org.jfree.ui.ApplicationFrame; 
import org.jfree.ui.RefineryUtilities; 

public class Function2DDemo1 extends ApplicationFrame { 

    public Function2DDemo1(String title) { 
     super(title); 
     JPanel chartPanel = createDemoPanel(); 
     chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); 
     setContentPane(chartPanel); 
     setDefaultCloseOperation(EXIT_ON_CLOSE); 
    } 

    private static JFreeChart createChart(XYDataset dataset) { 
     // create the chart... 
     JFreeChart chart = ChartFactory.createXYLineChart("Function2DDemo1 ", 
     "X", // x axis label 
     "Y", // y axis label 
     dataset, // data 
     PlotOrientation.VERTICAL, true, // include legend 
     true, // tooltips 
     false // urls 
     ); 

     // SET A CUSTOM TITLE FONT 
     try { 
      File f = new File("/Library/Fonts/Microsoft/Perpetua.ttf"); 
      Font customFont = Font.createFont(Font.TRUETYPE_FONT, f); 
      customFont = customFont.deriveFont(36f); 
      chart.getTitle().setFont(customFont); 
      System.out.println(customFont.getFontName()); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (FontFormatException | IOException e) { 
      e.printStackTrace(); 
     } 


     XYPlot plot = (XYPlot) chart.getPlot(); 
     plot.getDomainAxis().setLowerMargin(0.0); 
     plot.getDomainAxis().setUpperMargin(0.0); 
     return chart; 
    } 

    public static XYDataset createDataset() { 
     XYDataset result = DatasetUtilities.sampleFunction2D(new X2(), -4.0, 4.0, 40, "f(x)"); 
     return result; 
    } 

    public static JPanel createDemoPanel() { 
     JFreeChart chart = createChart(createDataset()); 
     return new ChartPanel(chart); 
    } 

    static class X2 implements Function2D { 

     public double getValue(double x) { 
      return x * x + 2; 
     } 
    } 

    public static void main(String[] args) { 
     EventQueue.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       Function2DDemo1 demo = new Function2DDemo1("JFreeChart: Function2DDemo1.java"); 
       demo.pack(); 
       RefineryUtilities.centerFrameOnScreen(demo); 
       demo.setVisible(true); 
      } 
     }); 
    } 
}