textSelectionTheme static method

Implementation

static TextSelectionThemeData textSelectionTheme({
  /// Typically the same `ColorScheme` that is also used for your `ThemeData`.
  required final ColorScheme colorScheme,

  /// The [SchemeColor] based color of the cursor in the text field.
  ///
  /// The cursor indicates the current location of text insertion point in
  /// the field.
  ///
  /// If not defined, [colorScheme.primary] is used.
  final SchemeColor? cursorSchemeColor,

  /// The [SchemeColor] based background color of selected text.
  ///
  /// If not defined, [colorScheme.primary] is used.
  final SchemeColor? selectionSchemeColor,

  /// The opacity applied to [selectionSchemeColor].
  ///
  /// If not defined, default to [kTextSelectionOpacity] = 0.4 (40%).
  /// Same as Flutter SDK default.
  final double? selectionOpacity,

  /// The [SchemeColor] based color of the selection handles on the
  /// text field.
  ///
  /// Selection handles are used to indicate the bounds of the selected text,
  /// or as a handle to drag the cursor to a new location in the text.
  ///
  /// If not defined, [colorScheme.primary] is used.
  final SchemeColor? selectionHandleSchemeColor,

  /// A custom override color that
  /// [TextSelectionThemeData.selectionHandleColor] will use if it is defined.
  ///
  /// If not defined, the result from [selectionHandleSchemeColor] is used.
  final Color? selectionHandleCustomColor,
}) {
  // Get used cursorColor, defaults to primary.
  final Color cursorColor =
      schemeColor(cursorSchemeColor ?? SchemeColor.primary, colorScheme);

  // Get used selectionColor, defaults to primary.
  // Get around the opacity optimized out assert by using alpha.
  final Color selectionColor = schemeColor(
          selectionSchemeColor ?? SchemeColor.primary, colorScheme)
      .withAlpha(((selectionOpacity ?? kTextSelectionOpacity) * 255).round());

  // Get used selectionHandleColor, defaults to primary.
  final Color selectionHandleColor = selectionHandleCustomColor ??
      schemeColor(
          selectionHandleSchemeColor ?? SchemeColor.primary, colorScheme);

  return TextSelectionThemeData(
    cursorColor: cursorColor,
    selectionColor: selectionColor,
    selectionHandleColor: selectionHandleColor,
  );
}