styleFrom static method

ButtonStyle styleFrom({
  1. Color? foregroundColor,
  2. Color? backgroundColor,
  3. Color? disabledForegroundColor,
  4. Color? disabledBackgroundColor,
  5. Color? shadowColor,
  6. Color? surfaceTintColor,
  7. Color? iconColor,
  8. Color? disabledIconColor,
  9. Color? overlayColor,
  10. double? elevation,
  11. TextStyle? textStyle,
  12. EdgeInsetsGeometry? padding,
  13. Size? minimumSize,
  14. Size? fixedSize,
  15. Size? maximumSize,
  16. BorderSide? side,
  17. OutlinedBorder? shape,
  18. MouseCursor? enabledMouseCursor,
  19. MouseCursor? disabledMouseCursor,
  20. VisualDensity? visualDensity,
  21. MaterialTapTargetSize? tapTargetSize,
  22. Duration? animationDuration,
  23. bool? enableFeedback,
  24. AlignmentGeometry? alignment,
  25. InteractiveInkFeatureFactory? splashFactory,
  26. ButtonLayerBuilder? backgroundBuilder,
  27. ButtonLayerBuilder? foregroundBuilder,
})

A static convenience method that constructs an elevated button ButtonStyle given simple values.

The foregroundColor and disabledForegroundColor colors are used to create a MaterialStateProperty ButtonStyle.foregroundColor, and a derived ButtonStyle.overlayColor if overlayColor isn't specified.

If overlayColor is specified and its value is Colors.transparent then the pressed/focused/hovered highlights are effectively defeated. Otherwise a MaterialStateProperty with the same opacities as the default is created.

The backgroundColor and disabledBackgroundColor colors are used to create a MaterialStateProperty ButtonStyle.backgroundColor.

Similarly, the enabledMouseCursor and disabledMouseCursor parameters are used to construct ButtonStyle.mouseCursor and iconColor, disabledIconColor are used to construct ButtonStyle.iconColor.

The button's elevations are defined relative to the elevation parameter. The disabled elevation is the same as the parameter value, elevation + 2 is used when the button is hovered or focused, and elevation + 6 is used when the button is pressed.

All of the other parameters are either used directly or used to create a MaterialStateProperty with a single value for all states.

All parameters default to null, by default this method returns a ButtonStyle that doesn't override anything.

For example, to override the default text and icon colors for a ElevatedButton, as well as its overlay color, with all of the standard opacity adjustments for the pressed, focused, and hovered states, one could write:

ElevatedButton(
  style: ElevatedButton.styleFrom(foregroundColor: Colors.green),
  onPressed: () {
    // ...
  },
  child: const Text('Jump'),
),

And to change the fill color:

ElevatedButton(
  style: ElevatedButton.styleFrom(backgroundColor: Colors.green),
  onPressed: () {
    // ...
  },
  child: const Text('Meow'),
),

Implementation

static ButtonStyle styleFrom({
  Color? foregroundColor,
  Color? backgroundColor,
  Color? disabledForegroundColor,
  Color? disabledBackgroundColor,
  Color? shadowColor,
  Color? surfaceTintColor,
  Color? iconColor,
  Color? disabledIconColor,
  Color? overlayColor,
  double? elevation,
  TextStyle? textStyle,
  EdgeInsetsGeometry? padding,
  Size? minimumSize,
  Size? fixedSize,
  Size? maximumSize,
  BorderSide? side,
  OutlinedBorder? shape,
  MouseCursor? enabledMouseCursor,
  MouseCursor? disabledMouseCursor,
  VisualDensity? visualDensity,
  MaterialTapTargetSize? tapTargetSize,
  Duration? animationDuration,
  bool? enableFeedback,
  AlignmentGeometry? alignment,
  InteractiveInkFeatureFactory? splashFactory,
  ButtonLayerBuilder? backgroundBuilder,
  ButtonLayerBuilder? foregroundBuilder,
}) {
  final MaterialStateProperty<Color?>? foregroundColorProp = switch ((foregroundColor, disabledForegroundColor)) {
    (null, null) => null,
    (_, _) => _ElevatedButtonDefaultColor(foregroundColor, disabledForegroundColor),
  };
  final MaterialStateProperty<Color?>? backgroundColorProp = switch ((backgroundColor, disabledBackgroundColor)) {
    (null, null) => null,
    (_, _) => _ElevatedButtonDefaultColor(backgroundColor, disabledBackgroundColor),
  };
  final MaterialStateProperty<Color?>? iconColorProp = switch ((iconColor, disabledIconColor)) {
    (null, null) => null,
    (_, _) => _ElevatedButtonDefaultColor(iconColor, disabledIconColor),
  };
  final MaterialStateProperty<Color?>? overlayColorProp = switch ((foregroundColor, overlayColor)) {
    (null, null) => null,
    (_, final Color overlayColor) when overlayColor.value == 0 => const MaterialStatePropertyAll<Color?>(Colors.transparent),
    (_, _) => _ElevatedButtonDefaultOverlay((overlayColor ?? foregroundColor)!),
  };
  final MaterialStateProperty<double>? elevationValue = switch (elevation) {
    null => null,
    _ => _ElevatedButtonDefaultElevation(elevation),
  };
  final MaterialStateProperty<MouseCursor?> mouseCursor = _ElevatedButtonDefaultMouseCursor(enabledMouseCursor, disabledMouseCursor);

  return ButtonStyle(
    textStyle: MaterialStatePropertyAll<TextStyle?>(textStyle),
    backgroundColor: backgroundColorProp,
    foregroundColor: foregroundColorProp,
    overlayColor: overlayColorProp,
    shadowColor: ButtonStyleButton.allOrNull<Color>(shadowColor),
    surfaceTintColor: ButtonStyleButton.allOrNull<Color>(surfaceTintColor),
    iconColor: iconColorProp,
    elevation: elevationValue,
    padding: ButtonStyleButton.allOrNull<EdgeInsetsGeometry>(padding),
    minimumSize: ButtonStyleButton.allOrNull<Size>(minimumSize),
    fixedSize: ButtonStyleButton.allOrNull<Size>(fixedSize),
    maximumSize: ButtonStyleButton.allOrNull<Size>(maximumSize),
    side: ButtonStyleButton.allOrNull<BorderSide>(side),
    shape: ButtonStyleButton.allOrNull<OutlinedBorder>(shape),
    mouseCursor: mouseCursor,
    visualDensity: visualDensity,
    tapTargetSize: tapTargetSize,
    animationDuration: animationDuration,
    enableFeedback: enableFeedback,
    alignment: alignment,
    splashFactory: splashFactory,
    backgroundBuilder: backgroundBuilder,
    foregroundBuilder: foregroundBuilder,
  );
}