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change expand icon to use default icon colors (#21328)

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Jonah Williams 2018-09-06 12:59:01 -07:00 committed by GitHub
parent f5efbc4370
commit b53ac0ddce
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 15 additions and 1 deletions
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13
packages/flutter/lib/src/material/colors.dart
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@ -321,6 +321,19 @@ class Colors {
/// but with different opacities.
static const Color white70 = Color(0xB3FFFFFF);
/// White with 54% opacity.
///
/// ![](https://flutter.github.io/assets-for-api-docs/assets/material/Colors.whites.png)
///
/// See also:
///
/// * [ExpandIcon], which uses this color for dark themes.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
/// * [white, white30, white12, white10], which are variants on this color
/// but with different opacities.
static const Color white54 = Color(0x8AFFFFFF);
/// White with 32% opacity.
///
/// Used for disabled radio buttons and the text of disabled flat buttons in dark themes.

3
packages/flutter/lib/src/material/expand_icon.dart
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@ -110,13 +110,14 @@ class _ExpandIconState extends State<ExpandIcon> with SingleTickerProviderStateM
Widget build(BuildContext context) {
assert(debugCheckHasMaterial(context));
final MaterialLocalizations localizations = MaterialLocalizations.of(context);
final ThemeData theme = Theme.of(context);
final String onTapHint = widget.isExpanded ? localizations.expandedIconTapHint : localizations.collapsedIconTapHint;
return new Semantics(
onTapHint: widget.onPressed == null ? null : onTapHint,
child: new IconButton(
padding: widget.padding,
color: Colors.black38,
color: theme.brightness == Brightness.dark ? Colors.white54 : Colors.black54,
onPressed: widget.onPressed == null ? null : _handlePressed,
icon: new RotationTransition(
turns: _iconTurns,