generateHippyLinearGradient static method

LinearGradient? generateHippyLinearGradient(double width, double height, String angle, VoltronArray colorStopList,)

Implementation

static LinearGradient? generateHippyLinearGradient (double width, double height, String angle, VoltronArray colorStopList) {
  if (colorStopList.size() < 2) return null;
  var oppositeDegree = _getOppositeAngle(width, height);
  var gradientAngle = _calculateGradientAngle(angle, oppositeDegree);
  var initBeginAndEnd = _checkSpecialAngle(gradientAngle);
  Alignment begin;
  Alignment end;
  initBeginAndEnd ??= _calculateBeginAndEnd(width, height, gradientAngle, oppositeDegree);
  begin = initBeginAndEnd[0];
  end = initBeginAndEnd[1];

  var colors = <Color>[];
  var stops = <double>[];
  for (var i = 0; i < colorStopList.size(); i++) {
    VoltronMap? colorStop = colorStopList.get<VoltronMap>(i);
    var color = colorStop?.get<int>('color') ?? colorStop?.get<double>('color')?.toInt();
    var stop = colorStop?.get<double>('ratio');
    if (color != null) colors.add(Color(color));
    if (stop != null) stops.add(stop);
  }

  return LinearGradient(
    begin: begin,
    end: end,
    colors: colors,
    stops: stops.isNotEmpty ? stops : null,
  );
}