| // 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. |
| |
| /// @docImport 'elevated_button.dart'; |
| /// @docImport 'material.dart'; |
| /// @docImport 'outlined_button.dart'; |
| /// @docImport 'text_button.dart'; |
| /// @docImport 'theme.dart'; |
| /// @docImport 'theme_data.dart'; |
| library; |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/widgets.dart'; |
| |
| import 'theme.dart'; |
| import 'typography.dart'; |
| |
| /// Material design text theme. |
| /// |
| /// Definitions for the various typographical styles found in Material Design |
| /// (e.g., labelLarge, bodySmall). Rather than creating a [TextTheme] directly, |
| /// you can obtain an instance as [Typography.black] or [Typography.white]. |
| /// |
| /// To obtain the current text theme, call [TextTheme.of] with the current |
| /// [BuildContext]. This is equivalent to calling [Theme.of] and reading |
| /// the [ThemeData.textTheme] property. |
| /// |
| /// The names of the TextTheme properties match this table from the |
| /// [Material Design spec](https://m3.material.io/styles/typography/tokens). |
| /// |
| ///  |
| /// |
| /// The Material Design typography scheme was significantly changed in the |
| /// current (2021) version of the specification |
| /// ([https://m3.material.io/styles/typography/tokens](https://m3.material.io/styles/typography/tokens)). |
| /// |
| /// The **2021** spec has fifteen text styles: |
| /// |
| /// | NAME | SIZE | HEIGHT | WEIGHT | SPACING | | |
| /// |----------------|------|---------|---------|----------|-------------| |
| /// | displayLarge | 57.0 | 64.0 | regular | -0.25 | | |
| /// | displayMedium | 45.0 | 52.0 | regular | 0.0 | | |
| /// | displaySmall | 36.0 | 44.0 | regular | 0.0 | | |
| /// | headlineLarge | 32.0 | 40.0 | regular | 0.0 | | |
| /// | headlineMedium | 28.0 | 36.0 | regular | 0.0 | | |
| /// | headlineSmall | 24.0 | 32.0 | regular | 0.0 | | |
| /// | titleLarge | 22.0 | 28.0 | regular | 0.0 | | |
| /// | titleMedium | 16.0 | 24.0 | medium | 0.15 | | |
| /// | titleSmall | 14.0 | 20.0 | medium | 0.1 | | |
| /// | bodyLarge | 16.0 | 24.0 | regular | 0.5 | | |
| /// | bodyMedium | 14.0 | 20.0 | regular | 0.25 | | |
| /// | bodySmall | 12.0 | 16.0 | regular | 0.4 | | |
| /// | labelLarge | 14.0 | 20.0 | medium | 0.1 | | |
| /// | labelMedium | 12.0 | 16.0 | medium | 0.5 | | |
| /// | labelSmall | 11.0 | 16.0 | medium | 0.5 | | |
| /// |
| /// ...where "regular" is `FontWeight.w400` and "medium" is `FontWeight.w500`. |
| /// |
| /// The names of the 2018 TextTheme properties match this table from the |
| /// [Material Design spec](https://material.io/design/typography/the-type-system.html#type-scale) |
| /// with a few exceptions: the styles called H1-H6 in the spec are |
| /// displayLarge-titleLarge in the API chart, body1,body2 are called |
| /// bodyLarge and bodyMedium, caption is now bodySmall, button is labelLarge, |
| /// and overline is now labelSmall. |
| /// |
| /// The **2018** spec has thirteen text styles: |
| /// |
| /// | NAME | SIZE | WEIGHT | SPACING | | |
| /// |----------------|------|---------|----------|-------------| |
| /// | displayLarge | 96.0 | light | -1.5 | | |
| /// | displayMedium | 60.0 | light | -0.5 | | |
| /// | displaySmall | 48.0 | regular | 0.0 | | |
| /// | headlineMedium | 34.0 | regular | 0.25 | | |
| /// | headlineSmall | 24.0 | regular | 0.0 | | |
| /// | titleLarge | 20.0 | medium | 0.15 | | |
| /// | titleMedium | 16.0 | regular | 0.15 | | |
| /// | titleSmall | 14.0 | medium | 0.1 | | |
| /// | bodyLarge | 16.0 | regular | 0.5 | | |
| /// | bodyMedium | 14.0 | regular | 0.25 | | |
| /// | bodySmall | 12.0 | regular | 0.4 | | |
| /// | labelLarge | 14.0 | medium | 1.25 | | |
| /// | labelSmall | 10.0 | regular | 1.5 | | |
| /// |
| /// ...where "light" is `FontWeight.w300`, "regular" is `FontWeight.w400` and |
| /// "medium" is `FontWeight.w500`. |
| /// |
| /// By default, text styles are initialized to match the 2018 Material Design |
| /// specification as listed above. To provide backwards compatibility, the 2014 |
| /// specification is also available. |
| /// |
| /// To explicitly configure a [Theme] for the 2018 sizes, weights, and letter |
| /// spacings, you can initialize its [ThemeData.typography] value using |
| /// [Typography.material2018]. The [Typography] constructor defaults to this |
| /// configuration. To configure a [Theme] for the 2014 sizes, weights, and letter |
| /// spacings, initialize its [ThemeData.typography] value using |
| /// [Typography.material2014]. |
| /// |
| /// 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]. |
| /// |
| /// The 2018 styles cannot be mixed with the 2021 styles. Only one or the |
| /// other is allowed in this constructor. The 2018 styles are deprecated and |
| /// will eventually be removed. |
| const TextTheme({ |
| this.displayLarge, |
| this.displayMedium, |
| this.displaySmall, |
| this.headlineLarge, |
| this.headlineMedium, |
| this.headlineSmall, |
| this.titleLarge, |
| this.titleMedium, |
| this.titleSmall, |
| this.bodyLarge, |
| this.bodyMedium, |
| this.bodySmall, |
| this.labelLarge, |
| this.labelMedium, |
| this.labelSmall, |
| }); |
| |
| /// Largest of the display styles. |
| /// |
| /// As the largest text on the screen, display styles are reserved for short, |
| /// important text or numerals. They work best on large screens. |
| final TextStyle? displayLarge; |
| |
| /// Middle size of the display styles. |
| /// |
| /// As the largest text on the screen, display styles are reserved for short, |
| /// important text or numerals. They work best on large screens. |
| final TextStyle? displayMedium; |
| |
| /// Smallest of the display styles. |
| /// |
| /// As the largest text on the screen, display styles are reserved for short, |
| /// important text or numerals. They work best on large screens. |
| final TextStyle? displaySmall; |
| |
| /// Largest of the headline styles. |
| /// |
| /// Headline styles are smaller than display styles. They're best-suited for |
| /// short, high-emphasis text on smaller screens. |
| final TextStyle? headlineLarge; |
| |
| /// Middle size of the headline styles. |
| /// |
| /// Headline styles are smaller than display styles. They're best-suited for |
| /// short, high-emphasis text on smaller screens. |
| final TextStyle? headlineMedium; |
| |
| /// Smallest of the headline styles. |
| /// |
| /// Headline styles are smaller than display styles. They're best-suited for |
| /// short, high-emphasis text on smaller screens. |
| final TextStyle? headlineSmall; |
| |
| /// Largest of the title styles. |
| /// |
| /// Titles are smaller than headline styles and should be used for shorter, |
| /// medium-emphasis text. |
| final TextStyle? titleLarge; |
| |
| /// Middle size of the title styles. |
| /// |
| /// Titles are smaller than headline styles and should be used for shorter, |
| /// medium-emphasis text. |
| final TextStyle? titleMedium; |
| |
| /// Smallest of the title styles. |
| /// |
| /// Titles are smaller than headline styles and should be used for shorter, |
| /// medium-emphasis text. |
| final TextStyle? titleSmall; |
| |
| /// Largest of the body styles. |
| /// |
| /// Body styles are used for longer passages of text. |
| final TextStyle? bodyLarge; |
| |
| /// Middle size of the body styles. |
| /// |
| /// Body styles are used for longer passages of text. |
| /// |
| /// The default text style for [Material]. |
| final TextStyle? bodyMedium; |
| |
| /// Smallest of the body styles. |
| /// |
| /// Body styles are used for longer passages of text. |
| final TextStyle? bodySmall; |
| |
| /// Largest of the label styles. |
| /// |
| /// Label styles are smaller, utilitarian styles, used for areas of the UI |
| /// such as text inside of components or very small supporting text in the |
| /// content body, like captions. |
| /// |
| /// Used for text on [ElevatedButton], [TextButton] and [OutlinedButton]. |
| final TextStyle? labelLarge; |
| |
| /// Middle size of the label styles. |
| /// |
| /// Label styles are smaller, utilitarian styles, used for areas of the UI |
| /// such as text inside of components or very small supporting text in the |
| /// content body, like captions. |
| final TextStyle? labelMedium; |
| |
| /// Smallest of the label styles. |
| /// |
| /// Label styles are smaller, utilitarian styles, used for areas of the UI |
| /// such as text inside of components or very small supporting text in the |
| /// content body, like captions. |
| final TextStyle? labelSmall; |
| |
| /// 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 { |
| /// const TitleColorThemeCopy({super.key, required this.titleColor, required this.child}); |
| /// |
| /// 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( |
| /// titleLarge: theme.textTheme.titleLarge!.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? displayLarge, |
| TextStyle? displayMedium, |
| TextStyle? displaySmall, |
| TextStyle? headlineLarge, |
| TextStyle? headlineMedium, |
| TextStyle? headlineSmall, |
| TextStyle? titleLarge, |
| TextStyle? titleMedium, |
| TextStyle? titleSmall, |
| TextStyle? bodyLarge, |
| TextStyle? bodyMedium, |
| TextStyle? bodySmall, |
| TextStyle? labelLarge, |
| TextStyle? labelMedium, |
| TextStyle? labelSmall, |
| }) { |
| return TextTheme( |
| displayLarge: displayLarge ?? this.displayLarge, |
| displayMedium: displayMedium ?? this.displayMedium, |
| displaySmall: displaySmall ?? this.displaySmall, |
| headlineLarge: headlineLarge ?? this.headlineLarge, |
| headlineMedium: headlineMedium ?? this.headlineMedium, |
| headlineSmall: headlineSmall ?? this.headlineSmall, |
| titleLarge: titleLarge ?? this.titleLarge, |
| titleMedium: titleMedium ?? this.titleMedium, |
| titleSmall: titleSmall ?? this.titleSmall, |
| bodyLarge: bodyLarge ?? this.bodyLarge, |
| bodyMedium: bodyMedium ?? this.bodyMedium, |
| bodySmall: bodySmall ?? this.bodySmall, |
| labelLarge: labelLarge ?? this.labelLarge, |
| labelMedium: labelMedium ?? this.labelMedium, |
| labelSmall: labelSmall ?? this.labelSmall, |
| ); |
| } |
| |
| /// 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 { |
| /// const TitleColorTheme({super.key, required this.child, required this.titleColor}); |
| /// |
| /// 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. |
| /// final TextTheme partialTheme = TextTheme(titleLarge: 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( |
| displayLarge: displayLarge?.merge(other.displayLarge) ?? other.displayLarge, |
| displayMedium: displayMedium?.merge(other.displayMedium) ?? other.displayMedium, |
| displaySmall: displaySmall?.merge(other.displaySmall) ?? other.displaySmall, |
| headlineLarge: headlineLarge?.merge(other.headlineLarge) ?? other.headlineLarge, |
| headlineMedium: headlineMedium?.merge(other.headlineMedium) ?? other.headlineMedium, |
| headlineSmall: headlineSmall?.merge(other.headlineSmall) ?? other.headlineSmall, |
| titleLarge: titleLarge?.merge(other.titleLarge) ?? other.titleLarge, |
| titleMedium: titleMedium?.merge(other.titleMedium) ?? other.titleMedium, |
| titleSmall: titleSmall?.merge(other.titleSmall) ?? other.titleSmall, |
| bodyLarge: bodyLarge?.merge(other.bodyLarge) ?? other.bodyLarge, |
| bodyMedium: bodyMedium?.merge(other.bodyMedium) ?? other.bodyMedium, |
| bodySmall: bodySmall?.merge(other.bodySmall) ?? other.bodySmall, |
| labelLarge: labelLarge?.merge(other.labelLarge) ?? other.labelLarge, |
| labelMedium: labelMedium?.merge(other.labelMedium) ?? other.labelMedium, |
| labelSmall: labelSmall?.merge(other.labelSmall) ?? other.labelSmall, |
| ); |
| } |
| |
| /// 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 [displayLarge], [displayMedium], |
| /// [displaySmall], [headlineLarge], [headlineMedium], and [bodySmall]. 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, |
| List<String>? fontFamilyFallback, |
| String? package, |
| double fontSizeFactor = 1.0, |
| double fontSizeDelta = 0.0, |
| Color? displayColor, |
| Color? bodyColor, |
| TextDecoration? decoration, |
| Color? decorationColor, |
| TextDecorationStyle? decorationStyle, |
| }) { |
| return TextTheme( |
| displayLarge: displayLarge?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| displayMedium: displayMedium?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| displaySmall: displaySmall?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| headlineLarge: headlineLarge?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| headlineMedium: headlineMedium?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| headlineSmall: headlineSmall?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| titleLarge: titleLarge?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| titleMedium: titleMedium?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| titleSmall: titleSmall?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| bodyLarge: bodyLarge?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| bodyMedium: bodyMedium?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| bodySmall: bodySmall?.apply( |
| color: displayColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| labelLarge: labelLarge?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| labelMedium: labelMedium?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| labelSmall: labelSmall?.apply( |
| color: bodyColor, |
| decoration: decoration, |
| decorationColor: decorationColor, |
| decorationStyle: decorationStyle, |
| fontFamily: fontFamily, |
| fontFamilyFallback: fontFamilyFallback, |
| fontSizeFactor: fontSizeFactor, |
| fontSizeDelta: fontSizeDelta, |
| package: package, |
| ), |
| ); |
| } |
| |
| /// Linearly interpolate between two text themes. |
| /// |
| /// {@macro dart.ui.shadow.lerp} |
| static TextTheme lerp(TextTheme? a, TextTheme? b, double t) { |
| if (identical(a, b) && a != null) { |
| return a; |
| } |
| return TextTheme( |
| displayLarge: TextStyle.lerp(a?.displayLarge, b?.displayLarge, t), |
| displayMedium: TextStyle.lerp(a?.displayMedium, b?.displayMedium, t), |
| displaySmall: TextStyle.lerp(a?.displaySmall, b?.displaySmall, t), |
| headlineLarge: TextStyle.lerp(a?.headlineLarge, b?.headlineLarge, t), |
| headlineMedium: TextStyle.lerp(a?.headlineMedium, b?.headlineMedium, t), |
| headlineSmall: TextStyle.lerp(a?.headlineSmall, b?.headlineSmall, t), |
| titleLarge: TextStyle.lerp(a?.titleLarge, b?.titleLarge, t), |
| titleMedium: TextStyle.lerp(a?.titleMedium, b?.titleMedium, t), |
| titleSmall: TextStyle.lerp(a?.titleSmall, b?.titleSmall, t), |
| bodyLarge: TextStyle.lerp(a?.bodyLarge, b?.bodyLarge, t), |
| bodyMedium: TextStyle.lerp(a?.bodyMedium, b?.bodyMedium, t), |
| bodySmall: TextStyle.lerp(a?.bodySmall, b?.bodySmall, t), |
| labelLarge: TextStyle.lerp(a?.labelLarge, b?.labelLarge, t), |
| labelMedium: TextStyle.lerp(a?.labelMedium, b?.labelMedium, t), |
| labelSmall: TextStyle.lerp(a?.labelSmall, b?.labelSmall, t), |
| ); |
| } |
| |
| /// The [ThemeData.textTheme] property of the ambient [Theme]. |
| /// |
| /// Equivalent to `Theme.of(context).textTheme`. |
| /// |
| /// See also: |
| /// * [TextTheme.primaryOf], which returns the [ThemeData.primaryTextTheme] property of |
| /// the ambient [Theme] instead. |
| static TextTheme of(BuildContext context) => Theme.of(context).textTheme; |
| |
| /// The [ThemeData.primaryTextTheme] property of the ambient [Theme]. |
| /// |
| /// |
| /// Equivalent to `Theme.of(context).primaryTextTheme`. |
| /// |
| /// See also: |
| /// * [TextTheme.of], which returns the [ThemeData.textTheme] property of the ambient |
| /// [Theme] instead. |
| static TextTheme primaryOf(BuildContext context) => Theme.of(context).primaryTextTheme; |
| |
| @override |
| bool operator ==(Object other) { |
| if (identical(this, other)) { |
| return true; |
| } |
| if (other.runtimeType != runtimeType) { |
| return false; |
| } |
| return other is TextTheme && |
| displayLarge == other.displayLarge && |
| displayMedium == other.displayMedium && |
| displaySmall == other.displaySmall && |
| headlineLarge == other.headlineLarge && |
| headlineMedium == other.headlineMedium && |
| headlineSmall == other.headlineSmall && |
| titleLarge == other.titleLarge && |
| titleMedium == other.titleMedium && |
| titleSmall == other.titleSmall && |
| bodyLarge == other.bodyLarge && |
| bodyMedium == other.bodyMedium && |
| bodySmall == other.bodySmall && |
| labelLarge == other.labelLarge && |
| labelMedium == other.labelMedium && |
| labelSmall == other.labelSmall; |
| } |
| |
| @override |
| int get hashCode => Object.hash( |
| displayLarge, |
| displayMedium, |
| displaySmall, |
| headlineLarge, |
| headlineMedium, |
| headlineSmall, |
| titleLarge, |
| titleMedium, |
| titleSmall, |
| bodyLarge, |
| bodyMedium, |
| bodySmall, |
| labelLarge, |
| labelMedium, |
| labelSmall, |
| ); |
| |
| @override |
| void debugFillProperties(DiagnosticPropertiesBuilder properties) { |
| super.debugFillProperties(properties); |
| final TextTheme defaultTheme = Typography.material2018(platform: defaultTargetPlatform).black; |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'displayLarge', |
| displayLarge, |
| defaultValue: defaultTheme.displayLarge, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'displayMedium', |
| displayMedium, |
| defaultValue: defaultTheme.displayMedium, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'displaySmall', |
| displaySmall, |
| defaultValue: defaultTheme.displaySmall, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'headlineLarge', |
| headlineLarge, |
| defaultValue: defaultTheme.headlineLarge, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'headlineMedium', |
| headlineMedium, |
| defaultValue: defaultTheme.headlineMedium, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'headlineSmall', |
| headlineSmall, |
| defaultValue: defaultTheme.headlineSmall, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'titleLarge', |
| titleLarge, |
| defaultValue: defaultTheme.titleLarge, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'titleMedium', |
| titleMedium, |
| defaultValue: defaultTheme.titleMedium, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'titleSmall', |
| titleSmall, |
| defaultValue: defaultTheme.titleSmall, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>('bodyLarge', bodyLarge, defaultValue: defaultTheme.bodyLarge), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'bodyMedium', |
| bodyMedium, |
| defaultValue: defaultTheme.bodyMedium, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>('bodySmall', bodySmall, defaultValue: defaultTheme.bodySmall), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'labelLarge', |
| labelLarge, |
| defaultValue: defaultTheme.labelLarge, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'labelMedium', |
| labelMedium, |
| defaultValue: defaultTheme.labelMedium, |
| ), |
| ); |
| properties.add( |
| DiagnosticsProperty<TextStyle>( |
| 'labelSmall', |
| labelSmall, |
| defaultValue: defaultTheme.labelSmall, |
| ), |
| ); |
| } |
| } |
