如何在填充矩形内绘制字符串？

Question

我只想在充满黑色的矩形内显示我的字符串。谢谢您的帮助！

Answer 1

给你：

public class MyPanel extends JPanel{ 
    public void paintComponent(Graphics g) { 
    super.paintComponent(g); 
    g.drawRect(10/*x*/, 10/*y*/, 80/*width*/, 30/*hight*/); 
    g.drawString("TextToDraw", 25/*x*/, 25/*y*/); 
    } 
} 

Answer 2

public class LabeledRectangle extends Rectangle{ 

    public LabeledRectangle(int x, int y, int width, int height, String text) { 
     super (x, y, width, height); 
     this.text = text; 

    } 

    public void draw(Graphics g) { 
     Graphics2D g2 = (Graphics2D) g; 
     g2.draw(new Rectangle2D.Double(x, y, width,height)); 
     Font font = g2.getFont(); 
     FontRenderContext context = g2.getFontRenderContext(); 
     g2.setFont(font); 
     int textWidth = (int) font.getStringBounds(text, context).getWidth(); 
     LineMetrics ln = font.getLineMetrics(text, context); 
     int textHeight = (int) (ln.getAscent() + ln.getDescent()); 
     int x1 = x + (width - textWidth)/2; 
     int y1 = (int)(y + (height + textHeight)/2 - ln.getDescent()); 

     g2.setColor(Color.red); 

     g2.drawString(text, (int) x1, (int) y1); 
    } 
    private String text; 
}