91 lines
2.9 KiB
Dart
91 lines
2.9 KiB
Dart
import 'package:flutter/material.dart';
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@immutable
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class AppSurfaces extends ThemeExtension<AppSurfaces> {
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const AppSurfaces({
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required this.cardRadius,
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required this.compactCardRadius,
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required this.dialogRadius,
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required this.cardElevation,
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required this.cardShadowColor,
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required this.compactShadowColor,
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});
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final double cardRadius;
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final double compactCardRadius;
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final double dialogRadius;
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final double cardElevation;
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final Color cardShadowColor;
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final Color compactShadowColor;
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// convenience shapes
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RoundedRectangleBorder get standardShape =>
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RoundedRectangleBorder(borderRadius: BorderRadius.circular(cardRadius));
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RoundedRectangleBorder get compactShape => RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(compactCardRadius),
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);
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RoundedRectangleBorder get dialogShape =>
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RoundedRectangleBorder(borderRadius: BorderRadius.circular(dialogRadius));
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static AppSurfaces of(BuildContext context) {
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final ext = Theme.of(context).extension<AppSurfaces>();
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return ext ??
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const AppSurfaces(
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cardRadius: 16,
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compactCardRadius: 12,
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dialogRadius: 20,
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cardElevation: 3,
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cardShadowColor: Color.fromRGBO(0, 0, 0, 0.12),
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compactShadowColor: Color.fromRGBO(0, 0, 0, 0.08),
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);
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}
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@override
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AppSurfaces copyWith({
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double? cardRadius,
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double? compactCardRadius,
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double? dialogRadius,
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double? cardElevation,
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Color? cardShadowColor,
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Color? compactShadowColor,
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}) {
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return AppSurfaces(
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cardRadius: cardRadius ?? this.cardRadius,
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compactCardRadius: compactCardRadius ?? this.compactCardRadius,
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dialogRadius: dialogRadius ?? this.dialogRadius,
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cardElevation: cardElevation ?? this.cardElevation,
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cardShadowColor: cardShadowColor ?? this.cardShadowColor,
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compactShadowColor: compactShadowColor ?? this.compactShadowColor,
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);
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}
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@override
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AppSurfaces lerp(ThemeExtension<AppSurfaces>? other, double t) {
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if (other is! AppSurfaces) return this;
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return AppSurfaces(
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cardRadius: lerpDouble(cardRadius, other.cardRadius, t) ?? cardRadius,
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compactCardRadius:
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lerpDouble(compactCardRadius, other.compactCardRadius, t) ??
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compactCardRadius,
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dialogRadius:
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lerpDouble(dialogRadius, other.dialogRadius, t) ?? dialogRadius,
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cardElevation:
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lerpDouble(cardElevation, other.cardElevation, t) ?? cardElevation,
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cardShadowColor:
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Color.lerp(cardShadowColor, other.cardShadowColor, t) ??
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cardShadowColor,
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compactShadowColor:
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Color.lerp(compactShadowColor, other.compactShadowColor, t) ??
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compactShadowColor,
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);
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}
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}
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// Helper because dart:ui lerpDouble isn't exported here
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double? lerpDouble(num? a, num? b, double t) {
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if (a == null && b == null) return null;
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a = a ?? 0;
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b = b ?? 0;
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return a + (b - a) * t;
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}
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