drawGridVerticalText method

void drawGridVerticalText({ required Canvas canvas, required double canvasWidth, required double canvasHeight, required double value, required double dy, required TextStyle style, double? lastClose, })

绘制垂直文字

Implementation

void drawGridVerticalText({
  required Canvas canvas,
  required double canvasWidth,
  required double canvasHeight,
  required double value,
  required double dy,
  required TextStyle style,
  double? lastClose,
}) {
  if (dy.isNaN) {
    return;
  }
  String maxText = Utils.toStringAsFixed(value);

  TextPainter painter = createText(text: maxText, style: style);
  double y;
  if (dy + painter.height > canvasHeight) {
    y = canvasHeight - painter.height;
  } else {
    y = dy - painter.height;
    if (y < 0) {
      y = 0;
    }
  }

  painter.paint(canvas, Offset(0, y));
  ///// 绘制涨跌比率文字
  if (lastClose != null) {
    String maxRatioText = Utils.calcStockPriceRatio(lastClose, value);

    TextPainter painter = createText(text: maxRatioText, style: style);
    painter.paint(canvas, Offset(canvasWidth - painter.width, y));
  }
}