写在预制的图像上

Question

http://www.robinswebsitestudio.com/ButtonSamples/buttons.html

以下代码会写入预制图像。但是，由此产生的图像存在严重问题。

• 原始png文件是一个带有Index Transparency和matte的3D按钮，因此gif文件会 融入页面背景颜色

  生成的gif文件是平的，遮罩消失了，文本看起来不平滑。所结果的 因此，文件不是您从Adobe Photoshop或Fireworks获得的，而且看起来不像 专业

如果有人有任何建议，我会全力以赴。使用Java获得高质量的3D按钮是不可能的吗？

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 String  pathToWeb = getServletContext().getRealPath(File.separator);

   File f = new File(pathToWeb + "activities.png");

   BufferedImage bufferedImage = ImageIO.read(f);

   // Create a graphics which can be used to draw into the buffered image 
  Graphics2D g2d = bufferedImage.createGraphics(); 

  g2d.setFont(new Font( "Arial", Font.BOLD, 15 ));       

  //create a string with black
  g2d.setColor(Color.black);

  g2d.drawString("Activities", 40, 40); 

   // Disposes of this graphics context and releases any system resources that it is using.  
   g2d.dispose(); 

   // Save as gif
   File file = new File("myactivities.gif"); 
   ImageIO.write(bufferedImage, "gif", file);