fromJson static method

Implementation

static TDThemeData? fromJson(String name, String themeJson,
    {var recoverDefault = false, TDExtraThemeData? extraThemeData}) {
  if (themeJson.isEmpty) {
    Log.e('TTheme', 'parse themeJson is empty');
    return null;
  }
  try {
    /// 要求json配置必须正确
    final themeConfig = json.decode(themeJson);
    if (themeConfig.containsKey(name)) {
      var theme = _emptyData(name);
      Map<String, dynamic> curThemeMap = themeConfig['$name'];

      /// 设置颜色
      Map<String, dynamic>? colorsMap = curThemeMap['color'];
      colorsMap?.forEach((key, value) {
        theme.colorMap[key] = toColor(value);
      });

      /// 设置字体尺寸
      Map<String, dynamic>? fontsMap = curThemeMap['font'];
      fontsMap?.forEach((key, value) {
        theme.fontMap[key] =
            Font.fromJson(value);
      });

      /// 设置圆角
      Map<String, dynamic>? cornersMap = curThemeMap['radius'];
      cornersMap?.forEach((key, value) {
        theme.radiusMap[key] = value.toDouble();
      });

      /// 设置字体
      Map<String, dynamic>? fontFamilyMap = curThemeMap['fontFamily'];
      fontFamilyMap?.forEach((key, value) {
        theme.fontFamilyMap[key] = FontFamily(fontFamily: value['fontFamily']);
      });

      /// 设置阴影
      Map<String, dynamic>? shadowMap = curThemeMap['shadow'];
      shadowMap?.forEach((key, value) {
        var list = <BoxShadow>[];
        (value as List).forEach((element) {
          list.add(BoxShadow(
            color: toColor(element['color']),
            blurRadius: element['blurRadius'].toDouble(),
            spreadRadius: element['spreadRadius'].toDouble(),
            offset: Offset(element['offset']?['x'].toDouble() ?? 0,
                element['offset']?['y'].toDouble() ?? 0),
          ));
        });

        theme.shadowMap[key] = list;
      });

      /// 设置Margin
      Map<String, dynamic>? marginsMap = curThemeMap['margin'];
      marginsMap?.forEach((key, value) {
        theme.spacerMap[key] = value.toDouble();
      });

      if (extraThemeData != null) {
        extraThemeData.parse(name, curThemeMap);
        theme.extraThemeData = extraThemeData;
      }
      if (recoverDefault) {
        _defaultThemeData = theme;
      }
      return theme;
    } else {
      Log.e('TTheme',
          'load theme error ,not found the theme with name:${name}');
      return null;
    }
  } catch (e) {
    Log.e('TTheme', 'parse theme data error:${e}');
    return null;
  }
}