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Updated the ColorScheme dartdoc: a11y (#22618)

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Hans Muller 2018-10-03 11:15:28 -07:00 committed by GitHub
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commit aa6a27e8a2
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1 changed files with 27 additions and 7 deletions
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34
packages/flutter/lib/src/material/color_scheme.dart
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@ -108,7 +108,7 @@ class ColorScheme extends Diagnosticable {
/// Create a color scheme from a [MaterialColor] swatch.
///
/// This constructor is used by [ThemeData] to create its default \
/// This constructor is used by [ThemeData] to create its default
/// color scheme.
factory ColorScheme.fromSwatch({
MaterialColor primarySwatch = Colors.blue,
@ -159,6 +159,9 @@ class ColorScheme extends Diagnosticable {
/// A darker version of the secondary color.
final Color secondaryVariant;
/// The background color for widgets like [Card].
final Color surface;
/// A color that typically appears behind scrollable content.
final Color background;
@ -166,24 +169,41 @@ class ColorScheme extends Diagnosticable {
/// [InputDecoration.errorText].
final Color error;
/// The background color for widgets like [Card].
final Color surface;
/// A color that's clearly legible when drawn on [primary].
///
/// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [primary]
/// and [onPrimary] is recommended. See
/// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
final Color onPrimary;
/// A color that's clearly legible when drawn on [secondary].
///
/// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [secondary]
/// and [onSecondary] is recommended. See
/// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
final Color onSecondary;
/// A color that's clearly legible when drawn on [surface].
///
/// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [surface]
/// and [onSurface] is recommended. See
/// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
final Color onSurface;
/// A color that's clearly legible when drawn on [error].
final Color onError;
/// A color that's clearly legible when drawn on [background].
///
/// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [background]
/// and [onBackground] is recommended. See
/// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
final Color onBackground;
/// A color that's clearly legible when drawn on [error].
///
/// To ensure that an app is accessibile, a contrast ratio of 4.5:1 for [error]
/// and [onError] is recommended. See
/// <https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html>.
final Color onError;
/// The overall brightness of this color scheme.
final Brightness brightness;