TeXFormula.java 文件源码

/**
 * @param formula
 *            the formula
 * @param style
 *            the style
 * @param size
 *            the size
 * @param transparency
 *            , if true the background is transparent
 * @return the generated image
 */
public Bitmap createBufferedImage(int style, float size, Integer fg,
        Integer bg) throws ParseException {
    TeXIcon icon = createTeXIcon(style, size);
    icon.setInsets(new Insets(2, 2, 2, 2));
    int w = icon.getIconWidth(), h = icon.getIconHeight();

    Bitmap image = Bitmap.createBitmap(w, h, Config.ARGB_8888);
    Canvas g2 = new Canvas(image);
    if (bg != null) {
        Paint st = new Paint();
        st.setStyle(Style.FILL_AND_STROKE);
        st.setColor(bg);
        g2.drawRect(0, 0, w, h, st);
    }

    icon.setForeground(fg == null ? Color.BLACK : fg);
    icon.paintIcon(g2, 0, 0);

    return image;
}