mirror of
https://gitlab.com/veilid/veilidchat.git
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4f02435964
accessible theming/high contrast support
84 lines
3.2 KiB
Dart
84 lines
3.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'radix_generator.dart';
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import 'scale_color.dart';
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import 'scale_input_decorator_theme.dart';
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import 'scale_scheme.dart';
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ScaleScheme _contrastScale(Brightness brightness) {
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final back = brightness == Brightness.light ? Colors.white : Colors.black;
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final front = brightness == Brightness.light ? Colors.black : Colors.white;
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final primaryScale = ScaleColor(
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appBackground: back,
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subtleBackground: back,
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elementBackground: back,
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hoverElementBackground: back,
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activeElementBackground: back,
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subtleBorder: front,
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border: front,
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hoverBorder: front,
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primary: back,
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hoverPrimary: back,
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subtleText: front,
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appText: front,
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primaryText: front,
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borderText: back,
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dialogBorder: front,
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calloutBackground: front,
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calloutText: back,
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);
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return ScaleScheme(
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primaryScale: primaryScale,
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primaryAlphaScale: primaryScale,
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secondaryScale: primaryScale,
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tertiaryScale: primaryScale,
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grayScale: primaryScale,
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errorScale: primaryScale);
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}
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ThemeData contrastGenerator(Brightness brightness) {
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final textTheme = makeRadixTextTheme(brightness);
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final scaleScheme = _contrastScale(brightness);
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final colorScheme = scaleScheme.toColorScheme(brightness);
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final scaleConfig = ScaleConfig(useVisualIndicators: true);
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final themeData = ThemeData.from(
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colorScheme: colorScheme, textTheme: textTheme, useMaterial3: true);
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return themeData.copyWith(
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bottomSheetTheme: themeData.bottomSheetTheme.copyWith(
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elevation: 0,
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modalElevation: 0,
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shape: const RoundedRectangleBorder(
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borderRadius: BorderRadius.only(
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topLeft: Radius.circular(16),
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topRight: Radius.circular(16)))),
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canvasColor: scaleScheme.primaryScale.subtleBackground,
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chipTheme: themeData.chipTheme.copyWith(
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backgroundColor: scaleScheme.primaryScale.elementBackground,
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selectedColor: scaleScheme.primaryScale.activeElementBackground,
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surfaceTintColor: scaleScheme.primaryScale.hoverElementBackground,
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checkmarkColor: scaleScheme.primaryScale.border,
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side: BorderSide(color: scaleScheme.primaryScale.border)),
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elevatedButtonTheme: ElevatedButtonThemeData(
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style: ElevatedButton.styleFrom(
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backgroundColor: scaleScheme.primaryScale.elementBackground,
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foregroundColor: scaleScheme.primaryScale.appText,
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disabledBackgroundColor: scaleScheme.grayScale.elementBackground,
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disabledForegroundColor: scaleScheme.grayScale.appText,
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shape: RoundedRectangleBorder(
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side: BorderSide(color: scaleScheme.primaryScale.border),
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borderRadius: BorderRadius.circular(8))),
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),
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textSelectionTheme: TextSelectionThemeData(
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cursorColor: scaleScheme.primaryScale.appText,
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selectionColor: scaleScheme.primaryScale.appText.withAlpha(0x7F),
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selectionHandleColor: scaleScheme.primaryScale.appText),
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inputDecorationTheme: ScaleInputDecoratorTheme(scaleScheme, textTheme),
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extensions: <ThemeExtension<dynamic>>[
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scaleScheme,
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scaleConfig,
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]);
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}
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