veilidchat/lib/theme/models/scale_theme.dart

import 'package:flutter/material.dart';

import 'scale_scheme.dart';

class ScaleTileTheme {
  ScaleTileTheme(
      {required this.textColor,
      required this.backgroundColor,
      required this.borderColor,
      required this.shapeBorder,
      required this.largeTextStyle,
      required this.smallTextStyle});

  final Color textColor;
  final Color backgroundColor;
  final Color borderColor;
  final ShapeBorder shapeBorder;
  final TextStyle largeTextStyle;
  final TextStyle smallTextStyle;
}

class ScaleTheme extends ThemeExtension<ScaleTheme> {
  ScaleTheme({
    required this.textTheme,
    required this.scheme,
    required this.config,
  });

  final TextTheme textTheme;
  final ScaleScheme scheme;
  final ScaleConfig config;

  @override
  ScaleTheme copyWith({
    TextTheme? textTheme,
    ScaleScheme? scheme,
    ScaleConfig? config,
  }) =>
      ScaleTheme(
        textTheme: textTheme ?? this.textTheme,
        scheme: scheme ?? this.scheme,
        config: config ?? this.config,
      );

  @override
  ScaleTheme lerp(ScaleTheme? other, double t) {
    if (other is! ScaleTheme) {
      return this;
    }
    return ScaleTheme(
        textTheme: TextTheme.lerp(textTheme, other.textTheme, t),
        scheme: scheme.lerp(other.scheme, t),
        config: config.lerp(other.config, t));
  }

  ScaleTileTheme tileTheme(
      {bool disabled = false,
      bool selected = false,
      ScaleKind scaleKind = ScaleKind.primary}) {
    final tileColor = scheme.scale(!disabled ? scaleKind : ScaleKind.gray);

    final borderColor = selected ? tileColor.hoverBorder : tileColor.border;
    final backgroundColor = config.useVisualIndicators && !selected
        ? tileColor.borderText
        : borderColor;
    final textColor = config.useVisualIndicators && !selected
        ? borderColor
        : tileColor.borderText;

    final largeTextStyle = textTheme.labelMedium!.copyWith(color: textColor);
    final smallTextStyle = textTheme.labelSmall!.copyWith(color: textColor);

    final shapeBorder = RoundedRectangleBorder(
        side: config.useVisualIndicators
            ? BorderSide(width: 2, color: borderColor, strokeAlign: 0)
            : BorderSide.none,
        borderRadius: BorderRadius.circular(8 * config.borderRadiusScale));

    return ScaleTileTheme(
      textColor: textColor,
      backgroundColor: backgroundColor,
      borderColor: borderColor,
      shapeBorder: shapeBorder,
      largeTextStyle: largeTextStyle,
      smallTextStyle: smallTextStyle,
    );
  }
}