Emoji.Wpf

Emoji.Wpf adds Emoji rendering support to WPF applications.

Features

• Provides drop-in replacements for TextBlock and RichTextBox, no additional code required.
• Colour emoji! 😨 💩 🍰 ✈️ ✏️ 📞 ☘️
• Multiracial family emoji! 👩🏿‍👩🏻‍👦🏽 👨🏻‍👩🏿‍👧🏽‍👦🏽 👩🏻‍👶🏽
• Emoji for flags!
• Win11 style flags!
• Full vector emoji! Render at huge sizes without quality loss.
• Optional support for subpixel antialiasing.
• Lightweight; does not embed a font or emoji images; just uses the system font.
• Works with old .NET versions such as .NET Framework 4.0.
• Can work on Windows 7 or Windows 8 by installing the Segoe UI Emoji font in c:/Windows/Fonts.
• Free, opensource software, with no strings attached.
• Available as a Nuget package.

Available classes

• Emoji.Wpf.TextBlock: an emoji-aware version of System.Windows.Controls.TextBlock.
• Emoji.Wpf.RichTextBox: an emoji-aware version of System.Windows.Controls.RichTextBox.
• Emoji.Wpf.Picker: an emoji picker

Available dependency properties

• Emoji.Image.Source: attach to either System.Windows.Controls.Image control or System.Windows.Media.DrawingImage object in order to manipulate emoji images

Available runtime flags

• bool Emoji.Wpf.EmojiData.EnableSubPixelRendering: enable subpixel rendering, defaults to false
• bool Emoji.Wpf.EmojiData.EnableWindowsStyleFlags: enable flag rendering, defaults to autodetected

Examples

Here is how to use Emoji.Wpf in your XAML:

    <Window ...
            xmlns:emoji="clr-namespace:Emoji.Wpf;assembly=Emoji.Wpf"
            ...>
        <Window.Resources>
            <DrawingImage x:Key="MyImageSource" emoji:Image.Source="👻"/>
        </Window.Resources>
        ...
        <emoji:RichTextBox FontSize="24" Margin="5"/>
        ...
        <emoji:TextBlock FontSize="24" Text="Hello! 💖😁🐨🐱‍🐉👩🏿‍👩🏻‍👦🏽 lol"/>
        ...
        <emoji:Picker FontSize="40"/>
        ...
        <Image Source="{StaticResource MyImageSource}"/>
        ...
        <Image emoji:Image.Source="🦑"/>
        ...
    </Window>

More classes are to come, but feedback on what is needed is welcome.

Help needed!

I am not a very good WPF or even C# developer, but I think this could become a very useful and robust library if given enough care. Any help appreciated!

Version changelog

• v0.3.4 (2022/11/16):
  • fix a crash in emoji:RichTextBox
  • fix multiple issues with drag-and-drop in emoji:RichTextBox
  • glyph colourisation is now done on the GPU
  • new Windows 11 style flags on Windows 11
• v0.3.3 (2021/06/03):
  • fix a crash on Windows 8
  • fix flag rendering with the Twemoji font
• v0.3.1 (2021/06/02):
  • allow to disable flag rendering
• v0.3.0 (2021/03/14):
  • glyphs for flags!
  • new emoji:EmojiRendering dependency property for FlowDocument
  • optional subpixel glyph rendering
  • experimental support for custom emoji sequences and custom glyphs
• v0.2.5 (2021/01/29):
  • minor adjustments in emoji:Picker
• v0.2.4 (2021/01/28):
  • new emoji:Image.Source dependency property for Image and DrawingImage objects, allowing to easily render emoji as icons
• v0.2.3 (2021/01/27):
  • the rendering pipeline now exclusively uses vector objects
  • subpixel glyph positioning
  • use ColonSyntax="True" in emoji:RichTextBox for replace-as-you-type: :koala: becomes 🐨 etc.
• v0.2.2 (2021/01/25):
  • increased picker performance through virtualisation
  • rendering fallback for emoji ZWJ sequences
• v0.2.1 (2021/01/22):
  • emoji:RichTextBox.Text is two-way bindable and binding defaults to LostFocus
  • all base controls implement an IEmojiControl interface for convenience
  • fixed a warning caused by the Typography DLLs about ExtensionAttribute being redefined
• v0.2.0 (2021/01/17):
  • support for undo/redo and numerous bugfixes in emoji:RichTextBox
  • minimal .NET version is now Framework 4.0 (was 3.0)
• v0.1.8 (2021/01/13):
  • composite emoji such as 🧔🏻 or 👨🏻‍🦰 now render properly in emoji:RichTextBox
  • new Picked event in emoji:Picker
• v0.1.7 (2021/01/12):
  • colour blending is off by default; use ColorBlend="True" to enable
• v0.1.6 (2021/01/11):
  • add support for colour blending in emoji:TextBlock; use Blending="False" to disable
• v0.1.4 (2020/11/23):
  • add support for complex family emoji and mixed skin tone families
• v0.1.2 (2020/11/22):
  • support hair style variation emoji
  • fix kerning and positioning issues with family emoji
• v0.1.1 (2020/11/10):
  • support wrapping in emoji:TextBlock
• v0.1.0 (2020/11/9):
  • first non-experimental release

How does it work?

Emoji.Wpf renders emoji as vector images, using the WPF text rendering engine. The geometry information is found in the Segoe UI Emoji font glyphs. The colour information is found in the same font, using Microsoft’s COLR/CPAL format extensions.