filter property

List<CSSFunctionalNotation>? get filter

@override
List<CSSFunctionalNotation>? get filter => _filter;

set filter (List<CSSFunctionalNotation>? functions)

set filter(List<CSSFunctionalNotation>? functions) {
  _filter = functions;
  // Clear cache when filter changed.
  _cachedColorFilter = null;
  _cachedImageFilter = null;
  _filterDropShadows = functions != null ? _parseDropShadowFilters(functions) : null;
  resetBoxDecoration();

  // Filter effect the stacking context.
  RenderStyle? parentRenderStyle = getParentRenderStyle();
  parentRenderStyle?.markChildrenNeedsSort();

  markNeedsPaint();

  if (!kReleaseMode && functions != null) {
    ColorFilter? colorFilter = _parseColorFilters(functions);
    // RenderStyle renderStyle = this;
    ImageFilter? imageFilter = _parseImageFilters(functions);
    final bool hasDropShadow = _filterDropShadows != null && _filterDropShadows!.isNotEmpty;
    if (imageFilter == null && colorFilter == null && !hasDropShadow) {
      print('[WARNING] Parse CSS Filter failed or not supported: "$functions"');
      String supportedFilters =
          '$GRAYSCALE $SEPIA $BRIGHTNESS $CONTRAST $HUE_ROTATE $INVERT $SATURATE $DROP_SHADOW $BLUR';
      print('WebF only support following filters: $supportedFilters');
    }
  }
}