sclass TickerGraphPainter extends AbstractTickerPainter is IToolTipMaker, MakesBufferedImage {
  settable S pricePrefix = "Price=";  
  
  public void drawOn(Graphics2D g) {
    if (verticalRange == null)
      verticalRange(verticalRangeForTicker(ticker));
    if (horizontalRange == null)
      horizontalRange(horizontalRangeForTicker(ticker));
    if (horizontalRange == null)
      ret;
    
    drawPercentLines(g);
    drawAdditionalObjects(g);

    // Draw ticker graph
    
    var xRange = roundToIntRange(xRange());
    int idx1, idx2 = ticker.indexOfTimestamp(xFromScreen(xRange.start));
    for (int x = xRange.start; x < xRange.end; x++) {
      idx1 = idx2;
      idx2 = ticker.indexOfTimestamp(xFromScreen(x+1));
      var seq = ticker.subSequence(idx1, idx2+1);
      int y1 = iround(yToScreen(seq.maxPrice()));
      int y2 = iround(yToScreen(seq.minPrice()));
      drawLine(g, x, y1, x, y2, Color.white);
    }
    
    drawPositions(g);
  }

  public BufferedImage render() {
    var img = super.render();
    var img2 = cloneBufferedImageWithMeta(img);
    metaSet(img2, IToolTipMaker, this);
    ret img2;
  }
  
  public S getToolTip(Pt p) {
    double time = xFromScreen(p.x);
    double price = ticker.priceAtTimestamp(time);
    ret spaceCombine(
      ticker.market,
      formatPrice(price),
      "at",
      formatLocalDateWithSeconds(lround(time)));
  }
  
  swappable S formatPrice(double price) {
    ret pricePrefix() + formatDouble3X(price);
  }
}