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Update ColorScheme.fromSwatch docs for Material 3 (#136816)

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part of [Clarify ColorScheme fromSwatch/fromSeed usage](https://github.com/flutter/flutter/issues/132584)
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Taha Tesser 2023-10-23 18:57:44 +03:00 committed by GitHub
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commit 5e8b5f4ea2
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1 changed files with 9 additions and 4 deletions
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packages/flutter/lib/src/material/color_scheme.dart
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@ -455,10 +455,16 @@ class ColorScheme with Diagnosticable {
_inversePrimary = inversePrimary,
_surfaceTint = surfaceTint;
/// Create a color scheme from a [MaterialColor] swatch.
/// Creates a color scheme from a [MaterialColor] swatch.
///
/// This constructor is used by [ThemeData] to create its default
/// color scheme.
/// In Material 3, this constructor is ignored by [ThemeData] when creating
/// its default color scheme. Instead, [ThemeData] uses [ ColorScheme.fromSeed]
/// to create its default color scheme. This constructor shouldn't be used
/// to update the Material 3 color scheme. It will be phased out gradually;
/// see https://github.com/flutter/flutter/issues/91772 for more details.
///
/// If [ThemeData.useMaterial3] is false, then this constructor is used by
/// [ThemeData] to create its default color scheme.
factory ColorScheme.fromSwatch({
MaterialColor primarySwatch = Colors.blue,
Color? accentColor,
@ -467,7 +473,6 @@ class ColorScheme with Diagnosticable {
Color? errorColor,
Brightness brightness = Brightness.light,
}) {
final bool isDark = brightness == Brightness.dark;
final bool primaryIsDark = _brightnessFor(primarySwatch) == Brightness.dark;
final Color secondary = accentColor ?? (isDark ? Colors.tealAccent[200]! : primarySwatch);