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是否有任何 java 库可用于从真字体(.ttf)中提取每个字符?

字体的每个字符,我想:

  1. 将其转换为图像
  2. 提取其代码(例如:Unicode 值)

任何人都可以帮助向我展示有关上述目的的一些提示吗?

PS:我想弄清楚,这个应用程序是如何制作的:http: //www.softpedia.com/progScreenshots/CharMap-Screenshot-94863.html

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1 回答 1

5

这会将 a 转换String为 a BufferedImage

public BufferedImage stringToBufferedImage(String s) {
    //First, we have to calculate the string's width and height

    BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR);
    Graphics g = img.getGraphics();

    //Set the font to be used when drawing the string
    Font f = new Font("Tahoma", Font.PLAIN, 48);
    g.setFont(f);

    //Get the string visual bounds
    FontRenderContext frc = g.getFontMetrics().getFontRenderContext();
    Rectangle2D rect = f.getStringBounds(s, frc);
    //Release resources
    g.dispose();

    //Then, we have to draw the string on the final image

    //Create a new image where to print the character
    img = new BufferedImage((int) Math.ceil(rect.getWidth()), (int) Math.ceil(rect.getHeight()), BufferedImage.TYPE_4BYTE_ABGR);
    g = img.getGraphics();
    g.setColor(Color.black); //Otherwise the text would be white
    g.setFont(f);

    //Calculate x and y for that string
    FontMetrics fm = g.getFontMetrics();
    int x = 0;
    int y = fm.getAscent(); //getAscent() = baseline
    g.drawString(s, x, y);

    //Release resources
    g.dispose();

    //Return the image
    return img;
}

我认为没有办法获取所有字符,您必须创建一个Stringchar数组来存储要转换为图像的所有字符。

一旦您拥有要转换的所有键的Stringor char[],您就可以轻松地对其进行迭代并转换调用该stringToBufferedImage方法,然后您就可以

int charCode = (int) charactersMap.charAt(counter);

如果charactersMapString, 或

int charCode = (int) charactersMap[counter];

ifcharactersMap是一个char数组

希望这可以帮助

于 2013-06-25T15:42:22.570 回答