static new ThreadLocal<Color> renderText_fg;

static new ThreadLocal<Color> renderText_bg;

sbool renderText_withLeading = true;

static BufferedImage renderText(S fontName, float fontSize, S text) {

  ret renderText(loadFont_cached(fontName), fontSize, text);

}

static BufferedImage renderText(Font font default sansSerif(), float fontSize, S text) {

  ret renderText(font.deriveFont(fontSize), text);

}

static BufferedImage renderText(Font font default sansSerif(), O _text) {

  S text = str(_text);

  Color background = optPar(renderText_bg, Color.white);

  Color foreground = optPar(renderText_fg, Color.black);

  // for font metrics

  FontMetrics fm = fontMetrics(font);

  int width = fm.stringWidth(text);

  if (width <= 0) null;

  int height = fm.getHeight();

  int y = renderText_withLeading

    ? fm.getLeading() + fm.getMaxAscent()

    : fm.getAscent();

  BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

  Graphics g = imageGraphics(img);

  g.setColor(background);

  g.fillRect(0, 0, width, height);

  g.setColor(foreground);

  g.setFont(font);

  g.drawString(text, 0, y);

  g.dispose();

  return img;

}