buildInputDecoration method

InputDecoration buildInputDecoration(BuildContext context, Set<WidgetState> states, { bool expands = false, Widget? beforePostWidget, Widget? beforePreWidget, String? label, String? placeholder, String? tag, String? helperText, List<String>? errors, bool isRequired = false, VoidCallback? onClear, Widget? infoIcon, })

Implementation

InputDecoration buildInputDecoration(
  BuildContext context,
  Set<WidgetState> states, {
  bool expands = false,
  Widget? beforePostWidget,
  Widget? beforePreWidget,
  String? label,
  String? placeholder,
  String? tag,
  String? helperText,
  List<String>? errors,
  bool isRequired = false,
  VoidCallback? onClear,
  Widget? infoIcon,
}) {
  final inputBorder = buildInputBorder(states);

  final hasPrefix = beforePreWidget != null || preWidget != null;
  final hasSuffix = onClear != null || beforePostWidget != null || infoIcon != null || postWidget != null;

  Color resolvedBgColor = backgroundColor.resolve(states);

  if (decorationType == TInputDecorationType.filled && !(states.contains(WidgetState.disabled) || states.contains(WidgetState.error))) {
    if (resolvedBgColor == context.colors.surfaceContainerLowest) {
      final parentColor = context.getBackgroundColor(context.colors.surfaceContainerLowest);
      resolvedBgColor = parentColor.adaptiveContrast(context, 0.025);
    }
  }

  return InputDecoration(
    border: inputBorder,
    enabledBorder: inputBorder,
    focusedErrorBorder: inputBorder,
    disabledBorder: inputBorder,
    focusedBorder: inputBorder,
    errorBorder: inputBorder,
    contentPadding: fieldPadding,
    label: labelPosition == TLabelPosition.aboveField ? null : labelBuilder.resolve(states)(label, tag, isRequired, null),
    labelStyle: labelStyle.resolve(states),
    floatingLabelStyle: labelStyle.resolve(states),
    floatingLabelBehavior: switch (labelPosition) {
      TLabelPosition.aboveField => FloatingLabelBehavior.never,
      TLabelPosition.floating => FloatingLabelBehavior.auto,
    },
    isDense: true,
    visualDensity: VisualDensity.compact,
    hintText: placeholder,
    hintStyle: hintStyle.resolve(states),
    prefixIconConstraints: BoxConstraints(minHeight: fieldHeight, minWidth: hasPrefix ? 40 : 7.5),
    prefixIcon: _buildPreWidget(beforePreWidget),
    suffixIconConstraints: BoxConstraints(minHeight: fieldHeight, minWidth: hasSuffix ? 40 : 7.5),
    suffixIcon: _buildPostWidget(
        beforePostWidget: beforePostWidget, onClear: onClear, infoIcon: labelPosition == TLabelPosition.floating ? infoIcon : null),
    filled: decorationType == TInputDecorationType.filled,
    fillColor: resolvedBgColor,
  );
}