fontboundstest.java

来自「java learn PPT java learn PPT java learn」· Java 代码 · 共 35 行

     import java.applet.*;
     import java.awt.*;
     import java.awt.font.*;
     import java.awt.geom.*;
          
     public class FontBoundsTest extends Applet
     {  
          private final String MESSAGE = "Trapped!";

          public void paint(Graphics g)
          {
               Graphics2D g2d = (Graphics2D)g;

               // 创建一个 Font 对象.
               Font baseFont = new Font("Helvetica", Font.PLAIN, 50);

               // 得到Graphics2D容器的 FontRenderContext 
               FontRenderContext frc = g2d.getFontRenderContext();

               // 使用上面的FontRenderContext,获取消息和字体的布局
               TextLayout layout = new TextLayout(MESSAGE, baseFont, frc);

               // 得到布局的边框
               Rectangle2D textBounds = layout.getBounds();

               // 在 (45,50)绘制消息和边界矩形
               g2d.setFont(baseFont);
               g2d.setPaint(Color.BLACK);
               g2d.drawString(MESSAGE, 45, 50);

               g2d.translate(45, 50);
               g2d.setPaint(Color.RED);
               g2d.draw(textBounds);
          }
     }    // FontBoundsTest