ButtonThemeData constructor

const ButtonThemeData({ButtonTextTheme textTheme: ButtonTextTheme.normal, double minWidth: 88.0, double height: 36.0, EdgeInsetsGeometry padding, ShapeBorder shape, ButtonBarLayoutBehavior layoutBehavior: ButtonBarLayoutBehavior.padded, bool alignedDropdown: false, Color buttonColor, Color disabledColor, Color highlightColor, Color splashColor, ColorScheme colorScheme, MaterialTapTargetSize materialTapTargetSize })

Create a button theme object that can be used with ButtonTheme or ThemeData.

The textTheme, minWidth, height, alignedDropDown, and layoutBehavior parameters must not be null. The minWidth and height parameters must greater than or equal to zero.

The ButtonTheme's methods that have a MaterialButton parameter and have a name with a get prefix are used by RaisedButton, OutlineButton, and FlatButton to configure a RawMaterialButton.

Implementation 

const ButtonThemeData({
  this.textTheme = ButtonTextTheme.normal,
  this.minWidth = 88.0,
  this.height = 36.0,
  EdgeInsetsGeometry padding,
  ShapeBorder shape,
  this.layoutBehavior = ButtonBarLayoutBehavior.padded,
  this.alignedDropdown = false,
  Color buttonColor,
  Color disabledColor,
  Color highlightColor,
  Color splashColor,
  this.colorScheme,
  MaterialTapTargetSize materialTapTargetSize,
}) : assert(textTheme != null),
     assert(minWidth != null && minWidth >= 0.0),
     assert(height != null && height >= 0.0),
     assert(alignedDropdown != null),
     assert(layoutBehavior != null),
     _buttonColor = buttonColor,
     _disabledColor = disabledColor,
     _highlightColor = highlightColor,
     _splashColor = splashColor,
     _padding = padding,
     _shape = shape,
     _materialTapTargetSize = materialTapTargetSize;