getDecoration method

Implementation

Decoration? getDecoration() {
  BorderRadiusGeometry? borderRadiusGeometry;
  if (radius != null) {
    //所有的角度
    borderRadiusGeometry = BorderRadius.all(Radius.circular(radius!));
  } else {
    //否则就是，各个角度
    borderRadiusGeometry = BorderRadius.only(
        topLeft: Radius.circular(leftTopRadius != null ? leftTopRadius! : 0),
        topRight:
        Radius.circular(rightTopRadius != null ? rightTopRadius! : 0),
        bottomLeft:
        Radius.circular(leftBottomRadius != null ? leftBottomRadius! : 0),
        bottomRight: Radius.circular(
            rightBottomRadius != null ? rightBottomRadius! : 0));
  }
  Gradient? tGradient;
  if (gradient != null) {
    tGradient = LinearGradient(
      colors: gradientColorList != null ? gradientColorList! : [],
      // 设置有哪些渐变色
      begin: gradientBegin != null ? gradientBegin! : Alignment.centerLeft,
      // 渐变色开始的位置，默认 centerLeft
      end: gradientEnd != null ? gradientEnd! : Alignment.centerRight,
      // 渐变色结束的位置，默认 centerRight
      stops: gradientColorStops, // 颜色值梯度，取值范围[0,1]，长度要和 colors 的长度一样
    );
  }
  Decoration? widgetDecoration = BoxDecoration(
    gradient: tGradient,
    //背景颜色
    color: solidColor != null ? solidColor! : Colors.transparent,
    //圆角半径
    borderRadius: isCircle == true ? null : borderRadiusGeometry,
    //是否是圆形
    shape: isCircle == true ? BoxShape.circle : BoxShape.rectangle,
    //边框线宽、颜色
    border: Border.all(
        width: strokeWidth != null ? strokeWidth! : 0,
        color: strokeColor != null ? strokeColor! : Colors.transparent),
  );
  return widgetDecoration;
}