HandyControl 解决不全局引入控件部分内容不显示问题

问题场景

使用HandyControl 时并不按照官方文档方式，在App.xaml中添加以下代码：

<Application.Resources><ResourceDictionary><ResourceDictionary.MergedDictionaries><ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml"/><ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml"/></ResourceDictionary.MergedDictionaries></ResourceDictionary>
</Application.Resources>

而只是在必要窗口页面引入SkinDefault.xaml和Theme.xaml，导致部分控件样式丢失，常见的例如Growl。
页面代码如下：

<Window x:Class="WPFResource.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:WPFResource"xmlns:hc="https://handyorg.github.io/handycontrol"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><DockPanel><Button Content="Click" Click="Button_Click" DockPanel.Dock="Top"></Button><ScrollViewer VerticalScrollBarVisibility="Hidden" HorizontalAlignment="Right"><ScrollViewer.Resources><ResourceDictionary><!--希望在这里引入控件样式--><ResourceDictionary.MergedDictionaries><ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml"></ResourceDictionary><ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml"></ResourceDictionary></ResourceDictionary.MergedDictionaries></ResourceDictionary></ScrollViewer.Resources><StackPanel hc:Growl.GrowlParent="True" VerticalAlignment="Top" Margin="0,10,10,10"/></ScrollViewer></DockPanel>
</Window>

页面后端代码：

/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : System.Windows.Window
{public MainWindow(){InitializeComponent();}private void Button_Click(object sender, RoutedEventArgs e){// 点击弹出GrowlInfo信息Growl.Success("HHHHHHHHHH");}
}

运行效果如图一，并不是期望效果图二，图一缺少了图标。

解决方案

通过查看Growl对应的控件代码，可以知道，构建Growl 控件实例时，图标实际为Geometry类型，只有Icon 与 IconBrush 两者为null 会导致图标出来，进而查看ResourceHelper.GetResource()。

var ctl = new Growl
{Message = growlInfo.Message,Time = DateTime.Now,Icon = ResourceHelper.GetResource<Geometry>(growlInfo.IconKey) ?? growlInfo.Icon,//读取资源，也可以采用手动为growlInfo实例添加自定义图标IconBrush = ResourceHelper.GetResource<Brush>(growlInfo.IconBrushKey) ?? growlInfo.IconBrush,//读取资源，也可以采用手动为growlInfo实例添加自定义图标画刷_showCloseButton = growlInfo.ShowCloseButton,ActionBeforeClose = growlInfo.ActionBeforeClose,_staysOpen = growlInfo.StaysOpen,ShowDateTime = growlInfo.ShowDateTime,ConfirmStr = growlInfo.ConfirmStr,CancelStr = growlInfo.CancelStr,Type = growlInfo.Type,_waitTime = Math.Max(growlInfo.WaitTime, MinWaitTime)
};

对应代码实现如下，获取资源并不是通过当前窗口实例进行资源获取，上级也不存在必要的图标和笔刷，故而缺少资源就会返回null：

/// <summary>
///     资源帮助类
/// </summary>
public class ResourceHelper
{/// <summary>///     获取资源/// </summary>/// <param name="key"></param>/// <returns></returns>public static T GetResource<T>(string key){if (Application.Current.TryFindResource(key) is T resource){return resource;}return default;}
}

缺少那就引入，好在HandyControl 的基础资源比较规范，提供了一套相对比较完整的资源文件。
这些资源在src/Shared/HandyControl_Shared/Themes/Basic 中。

\Themes\Basic
│  Behaviors.xaml
│  Brushes.xaml
│  Converters.xaml
│  Effects.xaml
│  Fonts.xaml
│  Geometries.xaml
│  Paths.xaml
│  Sizes.xaml
└─ColorsColors.xamlColorsDark.xamlColorsViolet.xaml

解决办法如下：
本地项目中创建Themes目录同时创建Themes/Basic目录，需要注意的是，文件属性需要设置为页。

└─Themes└─Basic│  Brushes.xaml│  Geometries.xaml└─ColorsColors.xaml

在App.xaml中进行引入本地资源，程序集为当前项目名称，此处为WPFResource。

<Application x:Class="WPFResource.App"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="clr-namespace:WPFResource"StartupUri="MainWindow.xaml"><Application.Resources><ResourceDictionary><ResourceDictionary.MergedDictionaries><ResourceDictionary Source="pack://application:,,,/WPFResource;component/Themes/Basic/Colors/Colors.xaml"></ResourceDictionary><ResourceDictionary Source="pack://application:,,,/WPFResource;component/Themes/Basic/Brushes.xaml"/><ResourceDictionary Source="pack://application:,,,/WPFResource;component/Themes/Basic/Geometries.xaml"/></ResourceDictionary.MergedDictionaries></ResourceDictionary></Application.Resources>
</Application>

运行效果如下：