initThemeConfig method

@override void initThemeConfig(String configId, { BaseCommonConfig? currentLevelCommonConfig, })

部分代码示意如下：

cardTitleConfig.detailTextStyle.merge(
  BrnTextStyle(
    color: commonConfig.colorTextBase,
    fontSize: commonConfig.fontSizeBase,
  ).merge(detailTextStyle),
);

- 以 `commonConfig` 字段为基础 merge `detailTextStyle`。
  `detailTextStyle` 字段优先级高，当detailTextStyle中字段（如 color）为 null 时
  会使用 `commonConfig.colorTextBase`。
- 以默认上一级配置为基础 merge 第一步的结果，当第一步中字段（如 color）为空时，
  使用上一层级配置的 color (`cardTitleConfig.detailTextStyle.color`)。

Implementation

@override
void initThemeConfig(
  String configId, {
  BaseCommonConfig? currentLevelCommonConfig,
}) {
  super.initThemeConfig(
    configId,
    currentLevelCommonConfig: currentLevelCommonConfig,
  );

  /// 用户全局组件配置
  GalleryDetailConfig galleryDetailConfig = BaseThemeConfig.instance
      .getConfig(configId: configId)
      .galleryDetailConfig;

  _appbarTitleStyle = galleryDetailConfig.appbarTitleStyle.merge(
    BaseTextStyle(
      color: commonConfig.colorTextBaseInverse,
      fontSize: commonConfig.fontSizeSubHead,
    ).merge(_appbarTitleStyle),
  );
  _appbarActionStyle = galleryDetailConfig.appbarActionStyle.merge(
    _appbarActionStyle,
  );
  _appbarConfig ??= galleryDetailConfig.appbarConfig;
  _appbarBackgroundColor ??= galleryDetailConfig.appbarBackgroundColor;
  _tabBarUnSelectedLabelStyle = galleryDetailConfig.tabBarUnSelectedLabelStyle
      .merge(BaseTextStyle(fontSize: commonConfig.fontSizeSubHead))
      .merge(_tabBarUnSelectedLabelStyle);
  _tabBarLabelStyle = galleryDetailConfig.tabBarLabelStyle
      .merge(
        BaseTextStyle(
          color: commonConfig.colorTextBaseInverse,
          fontSize: commonConfig.fontSizeSubHead,
        ),
      )
      .merge(_tabBarLabelStyle);
  _tabBarBackgroundColor ??= galleryDetailConfig._tabBarBackgroundColor;
  _pageBackgroundColor ??= galleryDetailConfig._pageBackgroundColor;
  _bottomBackgroundColor ??= galleryDetailConfig._bottomBackgroundColor;
  _titleStyle = galleryDetailConfig.titleStyle
      .merge(
        BaseTextStyle(
          color: commonConfig.colorTextBaseInverse,
          fontSize: commonConfig.fontSizeHead,
        ),
      )
      .merge(_titleStyle);
  _contentStyle = galleryDetailConfig.contentStyle
      .merge(BaseTextStyle(fontSize: commonConfig.fontSizeBase))
      .merge(_contentStyle);
  _actionStyle = galleryDetailConfig.actionStyle
      .merge(
        BaseTextStyle(
          color: commonConfig.colorTextBaseInverse,
          fontSize: commonConfig.fontSizeBase,
        ),
      )
      .merge(_actionStyle);
  _iconColor ??= galleryDetailConfig._iconColor;
}