// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/foundation.dart';
import 'package:flutter/painting.dart';
import 'typography.dart';
/// Material design text theme.
///
/// Definitions for the various typographical styles found in Material Design
/// (e.g., button, caption). Rather than creating a [TextTheme] directly,
/// you can obtain an instance as [Typography.black] or [Typography.white].
///
/// To obtain the current text theme, call [Theme.of] with the current
/// [BuildContext] and read the [ThemeData.textTheme] property.
///
/// The names of the TextTheme properties match this table from the
/// [Material Design spec](https://material.io/design/typography/the-type-system.html#type-scale)
/// with two exceptions: the styles called H1-H6 in the spec are
/// headline1-headline6 in the API, and body1,body2 are called
/// bodyText1 and bodyText2.
///
/// 
///
/// ## Migrating from the 2014 names
///
/// The Material Design typography scheme was significantly changed in the
/// current (2018) version of the specification
/// ([https://material.io/design/typography](https://material.io/design/typography)).
///
/// The 2018 spec has thirteen text styles:
/// ```
/// NAME SIZE WEIGHT SPACING
/// headline1 96.0 light -1.5
/// headline2 60.0 light -0.5
/// headline3 48.0 regular 0.0
/// headline4 34.0 regular 0.25
/// headline5 24.0 regular 0.0
/// headline6 20.0 medium 0.15
/// subtitle1 16.0 regular 0.15
/// subtitle2 14.0 medium 0.1
/// body1 16.0 regular 0.5 (bodyText1)
/// body2 14.0 regular 0.25 (bodyText2)
/// button 14.0 medium 1.25
/// caption 12.0 regular 0.4
/// overline 10.0 regular 1.5
/// ```
///
/// ...where "light" is `FontWeight.w300`, "regular" is `FontWeight.w400` and
/// "medium" is `FontWeight.w500`.
///
/// The [TextTheme] API was originally based on the original material (2014)
/// design spec, which used different text style names. For backwards
/// compatibility's sake, this API continues to expose the old names. The table
/// below should help with understanding the mapping of the API's old names and
/// the new names (those in terms of the 2018 material specification).
///
/// Each of the [TextTheme] text styles corresponds to one of the
/// styles from 2018 spec. By default, the font sizes, font weights
/// and letter spacings have not changed from their original,
/// 2014, values.
///
/// ```
/// NAME SIZE WEIGHT SPACING 2018 NAME
/// display4 112.0 thin 0.0 headline1
/// display3 56.0 normal 0.0 headline2
/// display2 45.0 normal 0.0 headline3
/// display1 34.0 normal 0.0 headline4
/// headline 24.0 normal 0.0 headline5
/// title 20.0 medium 0.0 headline6
/// subhead 16.0 normal 0.0 subtitle1
/// body2 14.0 medium 0.0 body1 (bodyText1)
/// body1 14.0 normal 0.0 body2 (bodyText2)
/// caption 12.0 normal 0.0 caption
/// button 14.0 medium 0.0 button
/// subtitle 14.0 medium 0.0 subtitle2
/// overline 10.0 normal 0.0 overline
/// ```
///
/// Where "thin" is `FontWeight.w100`, "normal" is `FontWeight.w400` and
/// "medium" is `FontWeight.w500`. Letter spacing for all of the original
/// text styles was 0.0.
///
/// The old names are deprecated in this API.
///
/// Since the names `body1` and `body2` are used in both specifications but with
/// different meanings, the API uses the terms `bodyText1` and `bodyText2` for
/// the new API.
///
/// To configure a [Theme] for the new sizes, weights, and letter spacings,
/// initialize its [ThemeData.typography] value using [Typography.material2018].
///
/// See also:
///
/// * [Typography], the class that generates [TextTheme]s appropriate for a platform.
/// * [Theme], for other aspects of a material design application that can be
/// globally adjusted, such as the color scheme.
/// * <https://material.io/design/typography/>
@immutable
class TextTheme with Diagnosticable {
/// Creates a text theme that uses the given values.
///
/// Rather than creating a new text theme, consider using [Typography.black]
/// or [Typography.white], which implement the typography styles in the
/// material design specification:
///
/// <https://material.io/design/typography/#type-scale>
///
/// If you do decide to create your own text theme, consider using one of
/// those predefined themes as a starting point for [copyWith] or [apply].
const TextTheme({
TextStyle? headline1,
TextStyle? headline2,
TextStyle? headline3,
TextStyle? headline4,
TextStyle? headline5,
TextStyle? headline6,
TextStyle? subtitle1,
TextStyle? subtitle2,
TextStyle? bodyText1,
TextStyle? bodyText2,
this.caption,
this.button,
this.overline,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display4,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display3,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline3. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display2,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline4. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display1,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline5. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? headline,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline6. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? title,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? subhead,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? subtitle,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? body2,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? body1,
}) : assert(
(headline1 == null && headline2 == null && headline3 == null && headline4 == null && headline5 == null && headline6 == null &&
subtitle1 == null && subtitle2 == null &&
bodyText1 == null && bodyText2 == null) ||
(display4 == null && display3 == null && display2 == null && display1 == null && headline == null && title == null &&
subhead == null && subtitle == null &&
body2 == null && body1 == null), 'Cannot mix 2014 and 2018 terms in call to TextTheme() constructor.'),
headline1 = headline1 ?? display4,
headline2 = headline2 ?? display3,
headline3 = headline3 ?? display2,
headline4 = headline4 ?? display1,
headline5 = headline5 ?? headline,
headline6 = headline6 ?? title,
subtitle1 = subtitle1 ?? subhead,
subtitle2 = subtitle2 ?? subtitle,
bodyText1 = bodyText1 ?? body2,
bodyText2 = bodyText2 ?? body1;
/// Extremely large text.
final TextStyle? headline1;
/// Very, very large text.
///
/// Used for the date in the dialog shown by [showDatePicker].
final TextStyle? headline2;
/// Very large text.
final TextStyle? headline3;
/// Large text.
final TextStyle? headline4;
/// Used for large text in dialogs (e.g., the month and year in the dialog
/// shown by [showDatePicker]).
final TextStyle? headline5;
/// Used for the primary text in app bars and dialogs (e.g., [AppBar.title]
/// and [AlertDialog.title]).
final TextStyle? headline6;
/// Used for the primary text in lists (e.g., [ListTile.title]).
final TextStyle? subtitle1;
/// For medium emphasis text that's a little smaller than [subtitle1].
final TextStyle? subtitle2;
/// Used for emphasizing text that would otherwise be [bodyText2].
final TextStyle? bodyText1;
/// The default text style for [Material].
final TextStyle? bodyText2;
/// Used for auxiliary text associated with images.
final TextStyle? caption;
/// Used for text on [ElevatedButton], [TextButton] and [OutlinedButton].
final TextStyle? button;
/// The smallest style.
///
/// Typically used for captions or to introduce a (larger) headline.
final TextStyle? overline;
/// Extremely large text.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline1].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get display4 => headline1;
/// Very, very large text.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline2].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get display3 => headline2;
/// Very large text.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline3].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline3. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get display2 => headline3;
/// Large text.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline4].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline4. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get display1 => headline4;
/// Used for large text in dialogs.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline5].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline5. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get headline => headline5;
/// Used for the primary text in app bars and dialogs.
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [headline6].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline6. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get title => headline6;
/// Used for the primary text in lists (e.g., [ListTile.title]).
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [subtitle1].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get subhead => subtitle1;
/// For medium emphasis text that's a little smaller than [subhead].
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this [subtitle2].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get subtitle => subtitle2;
/// Used for emphasizing text that would otherwise be [body1].
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this `body1`, and it is exposed in this API as
/// [bodyText1].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get body2 => bodyText1;
/// Used for the default text style for [Material].
///
/// This was the name used in the material design 2014 specification. The new
/// specification calls this `body2`, and it is exposed in this API as
/// [bodyText2].
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? get body1 => bodyText2;
/// Creates a copy of this text theme but with the given fields replaced with
/// the new values.
///
/// Consider using [Typography.black] or [Typography.white], which implement
/// the typography styles in the material design specification, as a starting
/// point.
///
/// {@tool snippet}
///
/// ```dart
/// /// A Widget that sets the ambient theme's title text color for its
/// /// descendants, while leaving other ambient theme attributes alone.
/// class TitleColorThemeCopy extends StatelessWidget {
/// TitleColorThemeCopy({Key? key, required this.child, required this.titleColor}) : super(key: key);
///
/// final Color titleColor;
/// final Widget child;
///
/// @override
/// Widget build(BuildContext context) {
/// final ThemeData theme = Theme.of(context);
/// return Theme(
/// data: theme.copyWith(
/// textTheme: theme.textTheme.copyWith(
/// headline6: theme.textTheme.headline6!.copyWith(
/// color: titleColor,
/// ),
/// ),
/// ),
/// child: child,
/// );
/// }
/// }
/// ```
/// {@end-tool}
///
/// See also:
///
/// * [merge] is used instead of [copyWith] when you want to merge all
/// of the fields of a TextTheme instead of individual fields.
TextTheme copyWith({
TextStyle? headline1,
TextStyle? headline2,
TextStyle? headline3,
TextStyle? headline4,
TextStyle? headline5,
TextStyle? headline6,
TextStyle? subtitle1,
TextStyle? subtitle2,
TextStyle? bodyText1,
TextStyle? bodyText2,
TextStyle? caption,
TextStyle? button,
TextStyle? overline,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display4,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display3,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline3. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display2,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline4. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? display1,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline5. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? headline,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is headline6. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? title,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? subhead,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is subtitle2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? subtitle,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText1. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? body2,
@Deprecated(
'This is the term used in the 2014 version of material design. The modern term is bodyText2. '
'This feature was deprecated after v1.13.8.'
)
TextStyle? body1,
}) {
assert(
(headline1 == null && headline2 == null && headline3 == null && headline4 == null && headline5 == null && headline6 == null &&
subtitle1 == null && subtitle2 == null &&
bodyText1 == null && bodyText2 == null) ||
(display4 == null && display3 == null && display2 == null && display1 == null && headline == null && title == null &&
subhead == null && subtitle == null &&
body2 == null && body1 == null), 'Cannot mix 2014 and 2018 terms in call to TextTheme.copyWith().');
return TextTheme(
headline1: headline1 ?? display4 ?? this.headline1,
headline2: headline2 ?? display3 ?? this.headline2,
headline3: headline3 ?? display2 ?? this.headline3,
headline4: headline4 ?? display1 ?? this.headline4,
headline5: headline5 ?? headline ?? this.headline5,
headline6: headline6 ?? title ?? this.headline6,
subtitle1: subtitle1 ?? subhead ?? this.subtitle1,
subtitle2: subtitle2 ?? subtitle ?? this.subtitle2,
bodyText1: bodyText1 ?? body2 ?? this.bodyText1,
bodyText2: bodyText2 ?? body1 ?? this.bodyText2,
caption: caption ?? this.caption,
button: button ?? this.button,
overline: overline ?? this.overline,
);
}
/// Creates a new [TextTheme] where each text style from this object has been
/// merged with the matching text style from the `other` object.
///
/// The merging is done by calling [TextStyle.merge] on each respective pair
/// of text styles from this and the [other] text themes and is subject to
/// the value of [TextStyle.inherit] flag. For more details, see the
/// documentation on [TextStyle.merge] and [TextStyle.inherit].
///
/// If this theme, or the `other` theme has members that are null, then the
/// non-null one (if any) is used. If the `other` theme is itself null, then
/// this [TextTheme] is returned unchanged. If values in both are set, then
/// the values are merged using [TextStyle.merge].
///
/// This is particularly useful if one [TextTheme] defines one set of
/// properties and another defines a different set, e.g. having colors
/// defined in one text theme and font sizes in another, or when one
/// [TextTheme] has only some fields defined, and you want to define the rest
/// by merging it with a default theme.
///
/// {@tool snippet}
///
/// ```dart
/// /// A Widget that sets the ambient theme's title text color for its
/// /// descendants, while leaving other ambient theme attributes alone.
/// class TitleColorTheme extends StatelessWidget {
/// TitleColorTheme({Key? key, required this.child, required this.titleColor}) : super(key: key);
///
/// final Color titleColor;
/// final Widget child;
///
/// @override
/// Widget build(BuildContext context) {
/// ThemeData theme = Theme.of(context);
/// // This partialTheme is incomplete: it only has the title style
/// // defined. Just replacing theme.textTheme with partialTheme would
/// // set the title, but everything else would be null. This isn't very
/// // useful, so merge it with the existing theme to keep all of the
/// // preexisting definitions for the other styles.
/// TextTheme partialTheme = TextTheme(headline6: TextStyle(color: titleColor));
/// theme = theme.copyWith(textTheme: theme.textTheme.merge(partialTheme));
/// return Theme(data: theme, child: child);
/// }
/// }
/// ```
/// {@end-tool}
///
/// See also:
///
/// * [copyWith] is used instead of [merge] when you wish to override
/// individual fields in the [TextTheme] instead of merging all of the
/// fields of two [TextTheme]s.
TextTheme merge(TextTheme? other) {
if (other == null)
return this;
return copyWith(
headline1: headline1?.merge(other.headline1) ?? other.headline1,
headline2: headline2?.merge(other.headline2) ?? other.headline2,
headline3: headline3?.merge(other.headline3) ?? other.headline3,
headline4: headline4?.merge(other.headline4) ?? other.headline4,
headline5: headline5?.merge(other.headline5) ?? other.headline5,
headline6: headline6?.merge(other.headline6) ?? other.headline6,
subtitle1: subtitle1?.merge(other.subtitle1) ?? other.subtitle1,
subtitle2: subtitle2?.merge(other.subtitle2) ?? other.subtitle2,
bodyText1: bodyText1?.merge(other.bodyText1) ?? other.bodyText1,
bodyText2: bodyText2?.merge(other.bodyText2) ?? other.bodyText2,
caption: caption?.merge(other.caption) ?? other.caption,
button: button?.merge(other.button) ?? other.button,
overline: overline?.merge(other.overline) ?? other.overline,
);
}
/// Creates a copy of this text theme but with the given field replaced in
/// each of the individual text styles.
///
/// The `displayColor` is applied to [headline4], [headline3], [headline2],
/// [headline1], and [caption]. The `bodyColor` is applied to the remaining
/// text styles.
///
/// Consider using [Typography.black] or [Typography.white], which implement
/// the typography styles in the material design specification, as a starting
/// point.
TextTheme apply({
String? fontFamily,
double fontSizeFactor = 1.0,
double fontSizeDelta = 0.0,
Color? displayColor,
Color? bodyColor,
TextDecoration? decoration,
Color? decorationColor,
TextDecorationStyle? decorationStyle,
}) {
return TextTheme(
headline1: headline1?.apply(
color: displayColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
headline2: headline2?.apply(
color: displayColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
headline3: headline3?.apply(
color: displayColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
headline4: headline4?.apply(
color: displayColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
headline5: headline5?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
headline6: headline6?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
subtitle1: subtitle1?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
subtitle2: subtitle2?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
bodyText1: bodyText1?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
bodyText2: bodyText2?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
caption: caption?.apply(
color: displayColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
button: button?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
overline: overline?.apply(
color: bodyColor,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
fontFamily: fontFamily,
fontSizeFactor: fontSizeFactor,
fontSizeDelta: fontSizeDelta,
),
);
}
/// Linearly interpolate between two text themes.
///
/// {@macro dart.ui.shadow.lerp}
static TextTheme lerp(TextTheme? a, TextTheme? b, double t) {
assert(t != null);
return TextTheme(
headline1: TextStyle.lerp(a?.headline1, b?.headline1, t),
headline2: TextStyle.lerp(a?.headline2, b?.headline2, t),
headline3: TextStyle.lerp(a?.headline3, b?.headline3, t),
headline4: TextStyle.lerp(a?.headline4, b?.headline4, t),
headline5: TextStyle.lerp(a?.headline5, b?.headline5, t),
headline6: TextStyle.lerp(a?.headline6, b?.headline6, t),
subtitle1: TextStyle.lerp(a?.subtitle1, b?.subtitle1, t),
subtitle2: TextStyle.lerp(a?.subtitle2, b?.subtitle2, t),
bodyText1: TextStyle.lerp(a?.bodyText1, b?.bodyText1, t),
bodyText2: TextStyle.lerp(a?.bodyText2, b?.bodyText2, t),
caption: TextStyle.lerp(a?.caption, b?.caption, t),
button: TextStyle.lerp(a?.button, b?.button, t),
overline: TextStyle.lerp(a?.overline, b?.overline, t),
);
}
@override
bool operator ==(Object other) {
if (identical(this, other))
return true;
if (other.runtimeType != runtimeType)
return false;
return other is TextTheme
&& headline1 == other.headline1
&& headline2 == other.headline2
&& headline3 == other.headline3
&& headline4 == other.headline4
&& headline5 == other.headline5
&& headline6 == other.headline6
&& subtitle1 == other.subtitle1
&& subtitle2 == other.subtitle2
&& bodyText1 == other.bodyText1
&& bodyText2 == other.bodyText2
&& caption == other.caption
&& button == other.button
&& overline == other.overline;
}
@override
int get hashCode {
// The hashValues() function supports up to 20 arguments.
return hashValues(
headline1,
headline2,
headline3,
headline4,
headline5,
headline6,
subtitle1,
subtitle2,
bodyText1,
bodyText2,
caption,
button,
overline,
);
}
@override
void debugFillProperties(DiagnosticPropertiesBuilder properties) {
super.debugFillProperties(properties);
final TextTheme defaultTheme = Typography.material2018(platform: defaultTargetPlatform).black;
properties.add(DiagnosticsProperty<TextStyle>('headline1', headline1, defaultValue: defaultTheme.headline1));
properties.add(DiagnosticsProperty<TextStyle>('headline2', headline2, defaultValue: defaultTheme.headline2));
properties.add(DiagnosticsProperty<TextStyle>('headline3', headline3, defaultValue: defaultTheme.headline3));
properties.add(DiagnosticsProperty<TextStyle>('headline4', headline4, defaultValue: defaultTheme.headline4));
properties.add(DiagnosticsProperty<TextStyle>('headline5', headline5, defaultValue: defaultTheme.headline5));
properties.add(DiagnosticsProperty<TextStyle>('headline6', headline6, defaultValue: defaultTheme.headline6));
properties.add(DiagnosticsProperty<TextStyle>('subtitle1', subtitle1, defaultValue: defaultTheme.subtitle1));
properties.add(DiagnosticsProperty<TextStyle>('subtitle2', subtitle2, defaultValue: defaultTheme.subtitle2));
properties.add(DiagnosticsProperty<TextStyle>('bodyText1', bodyText1, defaultValue: defaultTheme.bodyText1));
properties.add(DiagnosticsProperty<TextStyle>('bodyText2', bodyText2, defaultValue: defaultTheme.bodyText2));
properties.add(DiagnosticsProperty<TextStyle>('caption', caption, defaultValue: defaultTheme.caption));
properties.add(DiagnosticsProperty<TextStyle>('button', button, defaultValue: defaultTheme.button));
properties.add(DiagnosticsProperty<TextStyle>('overline', overline, defaultValue: defaultTheme.overline));
}
}