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Fix small TabBar inconsistencies (#20887)

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Tabs are now padded by 16.0 on the left and right  (used to be 12.0).
This commit is contained in:
sir-boformer 2018-08-22 09:42:18 -07:00 committed by Hans Muller
parent e24ac50871
commit 09e7902f5b
3 changed files with 11 additions and 10 deletions
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2
packages/flutter/lib/src/material/constants.dart
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@ -29,7 +29,7 @@ const int kRadialReactionAlpha = 0x1F;
const Duration kTabScrollDuration = Duration(milliseconds: 300);
/// The horizontal padding included by [Tab]s.
const EdgeInsets kTabLabelPadding = EdgeInsets.symmetric(horizontal: 12.0);
const EdgeInsets kTabLabelPadding = EdgeInsets.symmetric(horizontal: 16.0);
/// The padding added around material list items.
const EdgeInsets kMaterialListPadding = EdgeInsets.symmetric(vertical: 8.0);

3
packages/flutter/lib/src/material/tab_indicator.dart
View File

@ -90,6 +90,7 @@ class _UnderlinePainter extends BoxPainter {
final Rect rect = offset & configuration.size;
final TextDirection textDirection = configuration.textDirection;
final Rect indicator = _indicatorRectFor(rect, textDirection).deflate(borderSide.width / 2.0);
canvas.drawLine(indicator.bottomLeft, indicator.bottomRight, borderSide.toPaint());
final Paint paint = borderSide.toPaint()..strokeCap = StrokeCap.square;
canvas.drawLine(indicator.bottomLeft, indicator.bottomRight, paint);
}
}

16
packages/flutter/test/material/tabs_test.dart
View File

@ -1277,8 +1277,8 @@ void main() {
testWidgets('Overflowing RTL tab bar', (WidgetTester tester) async {
final List<Widget> tabs = new List<Widget>.filled(100,
// For convenience padded width of each tab will equal 100:
// 76 + kTabLabelPadding.horizontal(24)
new SizedBox(key: new UniqueKey(), width: 76.0, height: 40.0),
// 68 + kTabLabelPadding.horizontal(32)
new SizedBox(key: new UniqueKey(), width: 68.0, height: 40.0),
);
final TabController controller = new TabController(
@ -1384,15 +1384,15 @@ void main() {
actions: SemanticsAction.tap.index,
flags: SemanticsFlag.isSelected.index,
label: 'TAB #0\nTab 1 of 2',
rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight),
rect: new Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(0.0, 276.0, 0.0),
),
new TestSemantics(
id: 5,
actions: SemanticsAction.tap.index,
label: 'TAB #1\nTab 2 of 2',
rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(108.0, 276.0, 0.0),
rect: new Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(116.0, 276.0, 0.0),
),
]
)
@ -1647,15 +1647,15 @@ void main() {
actions: SemanticsAction.tap.index,
flags: SemanticsFlag.isSelected.index,
label: 'Semantics override 0\nTab 1 of 2',
rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight),
rect: new Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(0.0, 276.0, 0.0),
),
new TestSemantics(
id: 5,
actions: SemanticsAction.tap.index,
label: 'Semantics override 1\nTab 2 of 2',
rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(108.0, 276.0, 0.0),
rect: new Rect.fromLTRB(0.0, 0.0, 116.0, kTextTabBarHeight),
transform: new Matrix4.translationValues(116.0, 276.0, 0.0),
),
]
)