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This package basically consists of an override to the built in "ImageUrlAttribute" that is used to specify preview images for the different contenttypes in your Episerver project. The only difference is that with this attribute the images are generated using a configured background color, foreground color and a reference to a FontAwesome icon. Since version [1.1.5] another feature was introduced where the same configured icon will also replace the treeicon in the page tree (feature needs to be explicitly turned on using configuration). Supports Episerver 11.x

• Generates preview images for the different contenttypes in your Episerver project
• Replace tree icons with custom icons for content types
• Support for using Font Awesome Free 5 and 4 icons
• Supports customized foreground and background color on generated images
• Loading custom fonts

• Install NuGet package (use EPiServer Nuget)
• Install-Package Geta.Epi.FontThumbnail

Please notice that this attribute cannot be used in conjunction with any other attributes inheriting from ImageUrlAttribute (for example SiteImageUrl or basic ImageUrl-attributes) on the same contenttype. All existing ImageUrl-attributes on the contenttype where you want to use this, needs to be removed.

Using the built in ImageUrlAttribute, you specify the images to be presented like this:

[ImageUrlAttribute("~/images/contenttypes/articlepage.png")]

Using this package you can specify it like this instead:

[ThumbnailIcon(FontAwesome5Brands.Github)]

There are a couple different enum types available: FontAwesome5Brands, FontAwesome5Regular and FontAwesome5Solid for the different Font Awesome 5 styles. There is also the FontAwesome enum for the Font Awesome version 4 icons.

Or with overriddes for specifying different colors and size:

[ThumbnailIcon(FontAwesome5Brands.Github,"#000000","#ffffff",40)]

The defaults if nothing else is specified is of course the Geta colors as seen in the screenshot.

The images that gets generated is cached in [appDataPath]\thumb_cache\

Using the following configuration you can change the default colors:

<appSettings>
    <add key="FontThumbnail.BackgroundColor" value="#000000" />
    <add key="FontThumbnail.ForegroundColor" value="#ffffff" />
    <add key="FontThumbnail.FontSize" value="40" />
</appSettings>

Loading custom fonts

To load custom icon fonts you can place the font you want to use in the default folder [appDataPath]\fonts\ (this can also be customized using appSettings.

<appSettings>
    <add key="FontThumbnail.CustomFontPath" value="App_Data\fonts\" />
</appSettings>

The above example shows how you should configure the path if you want to add the specific font to your solution in a folder in your project, for example the App_Data folder. You also have to make sure to set the properties of the font to "Copy to output directory"

Then specify the font and the character reference from the specific font to use in the ThumbnailIcon constructor like this.

[ThumbnailIcon("fontello.ttf",0xe801)]

If you are unsure about what value to enter as a character reference

Usually when you download an icon font, you also get an accompanying css file for with character references, which can look like this:

.icofont-brand-adidas:before
{
  content: "\e897";
}

Take the content reference from the css (\e897) and replace the \ with 0x so the end result is 0xe897 instead of "\e897" and use that value for referencing the correct character in the attribute like this:

[ThumbnailIcon("customfont.ttf",0xe897)]

To enable the feature to use custom icons in the content tree you have to add this configuration:

<appSettings>
    <add key="FontThumbnail.EnableTreeIcons" value="true"/>
</appSettings>

By default the same icons will be used in the content tree if you have defined an icon using the ThumbnailIcon-attribute.

[ThumbnailIcon(FontAwesome5Brands.Github)]

You can however disable this for specific content types using the ignore property on the TreeIcon-attribute on the content type, like this:

[ContentType(DisplayName = "Blog List Page")]
[ThumbnailIcon(FontAwesome5Solid.Blog)]
[TreeIcon(Ignore = true)]
public class BlogListPage : FoundationPageData
{
    ...
}

There is also support for overriding the icon defined in the ThumbnailIcon-attribute like this:

[ContentType(DisplayName = "Blog List Page")]
[ThumbnailIcon(FontAwesome5Solid.Blog)]
[TreeIcon(FontAwesome5Solid.CheckDouble)]
public class BlogListPage : FoundationPageData
{
    ...
}

or with the optional rotation (FlipVertical, FlipHorizontal, Rotate90, Rotate180, Rotate270):

[TreeIcon(FontAwesome5Solid.CheckDouble, Rotations.Rotate90)]

Changelog

https://getadigital.com/blog/contenttype-preview-images-w.-icons/

https://getadigital.com/blog/new-version-of-fontthumbnail/

https://github.com/degborta

https://github.com/johanbenschop