Starter/samples
1
0
Fork 0
mirror of https://github.com/flutter/samples.git synced 2025-11-08 13:58:47 +00:00
Code Issues Releases Wiki Activity

adjust text size

Browse Source
This commit is contained in:
Eric Windmill
2025-08-06 12:31:05 -04:00
parent 8cd1635dec
commit cce628c06b
4 changed files with 61 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
cupertino_gallery/lib/gallery_home.dart
View File

@@ -7,10 +7,14 @@ class GalleryHome extends StatelessWidget {
super.key,
required this.onThemeChange,
required this.isDarkMode,
required this.onTextSizeChange,
required this.textSize,
});
final ValueChanged<bool> onThemeChange;
final bool isDarkMode;
final ValueChanged<double> onTextSizeChange;
final double textSize;
@override
Widget build(BuildContext context) {
@@ -35,6 +39,8 @@ class GalleryHome extends StatelessWidget {
1 => SettingsPage(
onThemeChange: onThemeChange,
isDarkMode: isDarkMode,
onTextSizeChange: onTextSizeChange,
textSize: textSize,
),
_ => const Center(child: Text('Widgets')),
};

35
cupertino_gallery/lib/main.dart
View File

@@ -20,6 +20,7 @@ class CupertinoGalleryApp extends StatefulWidget {
class _CupertinoGalleryAppState extends State<CupertinoGalleryApp> {
ThemeMode _themeMode = ThemeMode.system;
double _textSize = 1.0;
void _handleThemeChange(bool isDarkMode) {
setState(() {
@@ -27,16 +28,44 @@ class _CupertinoGalleryAppState extends State<CupertinoGalleryApp> {
});
}
void _handleTextSizeChange(double newTextSize) {
setState(() {
_textSize = newTextSize;
});
}
@override
Widget build(BuildContext context) {
final baseTheme = CupertinoThemeData(
brightness:
_themeMode == ThemeMode.dark ? Brightness.dark : Brightness.light,
);
final textTheme = baseTheme.textTheme.copyWith(
textStyle:
baseTheme.textTheme.textStyle.copyWith(fontSize: 14 * _textSize),
actionTextStyle: baseTheme.textTheme.actionTextStyle
.copyWith(fontSize: 14 * _textSize),
tabLabelTextStyle: baseTheme.textTheme.tabLabelTextStyle
.copyWith(fontSize: 10 * _textSize),
navTitleTextStyle: baseTheme.textTheme.navTitleTextStyle
.copyWith(fontSize: 17 * _textSize),
navLargeTitleTextStyle: baseTheme.textTheme.navLargeTitleTextStyle
.copyWith(fontSize: 34 * _textSize),
navActionTextStyle: baseTheme.textTheme.navActionTextStyle
.copyWith(fontSize: 17 * _textSize),
pickerTextStyle: baseTheme.textTheme.pickerTextStyle
.copyWith(fontSize: 21 * _textSize),
dateTimePickerTextStyle: baseTheme.textTheme.dateTimePickerTextStyle
.copyWith(fontSize: 21 * _textSize),
);
return CupertinoApp(
title: 'Cupertino Gallery',
theme: CupertinoThemeData(
brightness: _themeMode == ThemeMode.dark ? Brightness.dark : Brightness.light,
),
theme: baseTheme.copyWith(textTheme: textTheme),
home: GalleryHome(
onThemeChange: _handleThemeChange,
isDarkMode: _themeMode == ThemeMode.dark,
onTextSizeChange: _handleTextSizeChange,
textSize: _textSize,
),
);
}

26
cupertino_gallery/lib/settings_page.dart
View File

@@ -5,29 +5,39 @@ class SettingsPage extends StatefulWidget {
super.key,
required this.onThemeChange,
required this.isDarkMode,
required this.onTextSizeChange,
required this.textSize,
});
final ValueChanged<bool> onThemeChange;
final bool isDarkMode;
final ValueChanged<double> onTextSizeChange;
final double textSize;
@override
State<SettingsPage> createState() => _SettingsPageState();
}
class _SettingsPageState extends State<SettingsPage> {
double _textSize = 1.0;
late bool isDarkMode;
late double _textSize;
@override
void initState() {
isDarkMode = widget.isDarkMode;
super.initState();
isDarkMode = widget.isDarkMode;
_textSize = widget.textSize;
}
@override
void didChangeDependencies() {
void didUpdateWidget(SettingsPage oldWidget) {
super.didUpdateWidget(oldWidget);
if (widget.isDarkMode != oldWidget.isDarkMode) {
isDarkMode = widget.isDarkMode;
super.didChangeDependencies();
}
if (widget.textSize != oldWidget.textSize) {
_textSize = widget.textSize;
}
}
@override
@@ -58,10 +68,13 @@ class _SettingsPageState extends State<SettingsPage> {
),
CupertinoSlider(
value: _textSize,
min: 0.5,
max: 1.5,
onChanged: (double value) {
setState(() {
_textSize = value;
});
widget.onTextSizeChange(value);
},
),
],
@@ -107,8 +120,10 @@ class _SettingsPageState extends State<SettingsPage> {
child: const Text('Reset'),
onPressed: () {
setState(() {
widget.onThemeChange(false);
isDarkMode = false;
_textSize = 1.0;
widget.onThemeChange(false);
widget.onTextSizeChange(1.0);
});
Navigator.pop(context);
},
@@ -125,3 +140,4 @@ class _SettingsPageState extends State<SettingsPage> {
);
}
}

23
cupertino_gallery/test/widget_test.dart
View File

@@ -5,25 +5,4 @@
// gestures. You can also use WidgetTester to find child widgets in the widget
// tree, read text, and verify that the values of widget properties are correct.
import 'package:cupertino_gallery/gallery_home.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets('Counter increments smoke test', (WidgetTester tester) async {
// Build our app and trigger a frame.
await tester.pumpWidget(const GalleryHome());
// Verify that our counter starts at 0.
expect(find.text('0'), findsOneWidget);
expect(find.text('1'), findsNothing);
// Tap the '+' icon and trigger a frame.
await tester.tap(find.byIcon(Icons.add));
await tester.pump();
// Verify that our counter has incremented.
expect(find.text('0'), findsNothing);
expect(find.text('1'), findsOneWidget);
});
}
void main() {}