Use SixLabor.Fonts for rendering

src/Greenshot.Editor/Controls/EmojiControl.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using Greenshot.Editor.Drawing;
+
+namespace Greenshot.Editor.Controls
+{
+    internal class EmojiControl : Image
+    {
+        public static readonly DependencyProperty EmojiProperty = DependencyProperty.Register("Emoji", typeof(string), typeof(EmojiControl), new PropertyMetadata(default(string), PropertyChangedCallback));
+
+        private static void PropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            ((EmojiControl)d).Source = EmojiRenderer.GetBitmapSource((string)e.NewValue, 48);
+        }
+
+        public string Emoji
+        {
+            get { return (string)GetValue(EmojiProperty); }
+            set { SetValue(EmojiProperty, value); }
+        }
+    }
+}

src/Greenshot.Editor/Controls/EmojiData.cs

@@ -0,0 +1,281 @@
+//
+//  Emoji.Wpf — Emoji support for WPF
+//
+//  Copyright © 2017—2021 Sam Hocevar <sam@hocevar.net>
+//
+//  This library is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
+//
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text.RegularExpressions;
+
+namespace Greenshot.Editor.Controls
+{
+    public static class EmojiData
+    {
+        public static IEnumerable<Emoji> AllEmoji
+            => from g in AllGroups
+               from e in g.EmojiList
+               select e;
+
+        public static IList<Group> AllGroups { get; private set; }
+
+        public static IDictionary<string, Emoji> LookupByText { get; private set; }
+            = new Dictionary<string, Emoji>();
+        public static IDictionary<string, Emoji> LookupByName { get; private set; }
+            = new Dictionary<string, Emoji>();
+
+        public static Regex MatchOne { get; private set; }
+        public static HashSet<char> MatchStart { get; private set; }
+            = new HashSet<char>();
+
+        // FIXME: should we lazy load this? If the user calls Load() later, then
+        // this first Load() call will have been for nothing.
+        static EmojiData() => Load();
+
+        public static void Load()
+        {
+            ParseEmojiList();
+        }
+
+        public class Emoji
+        {
+            public string Name { get; set; }
+            public string Text { get; set; }
+            public bool HasVariations => VariationList.Count > 0;
+
+            public Group Group => SubGroup.Group;
+            public SubGroup SubGroup;
+
+            public IList<Emoji> VariationList { get; } = new List<Emoji>();
+        }
+
+        public class SubGroup
+        {
+            public string Name { get; set; }
+            public Group Group;
+
+            public IList<Emoji> EmojiList { get; } = new List<Emoji>();
+        }
+
+        public class Group
+        {
+            public string Name { get; set; }
+            public string Icon => SubGroups.FirstOrDefault()?.EmojiList.FirstOrDefault()?.Text;
+
+            public IList<SubGroup> SubGroups { get; } = new List<SubGroup>();
+
+            public int EmojiCount
+                => SubGroups.Select(s => s.EmojiList.Count).Sum();
+
+            public IEnumerable<IEnumerable<Emoji>> EmojiChunkList
+                => new ChunkHelper<Emoji>(EmojiList, 8);
+
+            public IEnumerable<Emoji> EmojiList
+                => from s in SubGroups
+                   from e in s.EmojiList
+                   select e;
+        }
+
+       private static string m_match_one_string;
+
+        // FIXME: this could be read directly from emoji-test.txt.gz
+        private static List<string> SkinToneComponents = new List<string>
+        {
+            "🏻", // light skin tone
+            "🏼", // medium-light skin tone
+            "🏽", // medium skin tone
+            "🏾", // medium-dark skin tone
+            "🏿", // dark skin tone
+        };
+
+        private static List<string> HairStyleComponents = new List<string>
+        {
+            "🦰", // red hair
+            "🦱", // curly hair
+            "🦳", // white hair
+            "🦲", // bald
+        };
+
+        private static string ToColonSyntax(string s)
+            => Regex.Replace(s.Trim().ToLowerInvariant(), "[^a-z0-9]+", "-");
+
+        private static void ParseEmojiList()
+        {
+            var match_group = new Regex(@"^# group: (.*)");
+            var match_subgroup = new Regex(@"^# subgroup: (.*)");
+            var match_sequence = new Regex(@"^([0-9a-fA-F ]+[0-9a-fA-F]).*; *([-a-z]*) *# [^ ]* (E[0-9.]* )?(.*)");
+            var match_skin_tone = new Regex($"({string.Join("|", SkinToneComponents)})");
+            var match_hair_style = new Regex($"({string.Join("|", HairStyleComponents)})");
+
+            var adult = "(👨|👩)(🏻|🏼|🏽|🏾|🏿)?";
+            var child = "(👦|👧|👶)(🏻|🏼|🏽|🏾|🏿)?";
+            var match_family = new Regex($"{adult}(\u200d{adult})*(\u200d{child})+");
+
+            var qualified_lut = new Dictionary<string, string>();
+            var list = new List<Group>();
+            var alltext = new List<string>();
+
+            Group current_group = null;
+            SubGroup current_subgroup = null;
+
+            foreach (var line in EmojiDescriptionLines())
+            {
+                var m = match_group.Match(line);
+                if (m.Success)
+                {
+                    current_group = new Group { Name = m.Groups[1].ToString() };
+                    list.Add(current_group);
+                    continue;
+                }
+
+                m = match_subgroup.Match(line);
+                if (m.Success)
+                {
+                    current_subgroup = new SubGroup { Name = m.Groups[1].ToString(), Group = current_group };
+                    current_group.SubGroups.Add(current_subgroup);
+                    continue;
+                }
+
+                m = match_sequence.Match(line);
+                if (m.Success)
+                {
+                    string sequence = m.Groups[1].ToString();
+                    string name = m.Groups[4].ToString();
+
+                    string text = string.Join("", from n in sequence.Split(' ')
+                                                  select char.ConvertFromUtf32(Convert.ToInt32(n, 16)));
+                    bool has_modifier = false;
+
+                    if (match_family.Match(text).Success)
+                    {
+                        // If this is a family emoji, no need to add it to our big matching
+                        // regex, since the match_family regex is already included.
+                    }
+                    else
+                    {
+                        // Construct a regex to replace e.g. "🏻" with "(🏻|🏼|🏽|🏾|🏿)" in a big
+                        // regex so that we can match all variations of this Emoji even if they are
+                        // not in the standard.
+                        bool has_nonfirst_modifier = false;
+                        var regex_text = match_skin_tone.Replace(
+                            match_hair_style.Replace(text, (x) =>
+                            {
+                                has_modifier = true;
+                                has_nonfirst_modifier |= x.Value != HairStyleComponents[0];
+                                return match_hair_style.ToString();
+                            }), (x) =>
+                            {
+                                has_modifier = true;
+                                has_nonfirst_modifier |= x.Value != SkinToneComponents[0];
+                                return match_skin_tone.ToString();
+                            });
+
+                        if (!has_nonfirst_modifier)
+                            alltext.Add(has_modifier ? regex_text : text);
+                    }
+
+                    // If there is already a differently-qualified version of this character, skip it.
+                    // FIXME: this only works well if fully-qualified appears first in the list.
+                    var unqualified = text.Replace("\ufe0f", "");
+                    if (qualified_lut.ContainsKey(unqualified))
+                        continue;
+
+                    qualified_lut[unqualified] = text;
+
+                    var emoji = new Emoji
+                    {
+                        Name = name,
+                        Text = text,
+                        SubGroup = current_subgroup,
+                    };
+                    // FIXME: this prevents LookupByText from working with the unqualified version
+                    LookupByText[text] = emoji;
+                    LookupByName[ToColonSyntax(name)] = emoji;
+                    MatchStart.Add(text[0]);
+
+                    // Get the left part of the name and check whether we’re a variation of an existing
+                    // emoji. If so, append to that emoji. Otherwise, add to current subgroup.
+                    // FIXME: does not work properly because variations can appear before the generic emoji
+                    if (name.Contains(":") && LookupByName.TryGetValue(ToColonSyntax(name.Split(':')[0]), out var parent_emoji))
+                    {
+                        if (parent_emoji.VariationList.Count == 0)
+                            parent_emoji.VariationList.Add(parent_emoji);
+                        parent_emoji.VariationList.Add(emoji);
+                    }
+                    else
+                        current_subgroup.EmojiList.Add(emoji);
+                }
+            }
+
+            // Remove the Component group. Not sure we want to have the skin tones in the picker.
+            list.RemoveAll(g => g.Name == "Component");
+            AllGroups = list;
+
+            // Make U+fe0f optional in the regex so that we can match any combination.
+            // FIXME: this is the starting point to implement variation selectors.
+            var sortedtext = alltext.OrderByDescending(x => x.Length);
+            var match_other = string.Join("|", sortedtext)
+                                    .Replace("*", "[*]")
+                                    .Replace("\ufe0f", "\ufe0f?");
+
+            // Build a regex that matches any Emoji
+            m_match_one_string = match_family.ToString() + "|" + match_other;
+            MatchOne = new Regex("(" + m_match_one_string + ")");
+        }
+
+        private static IEnumerable<string> EmojiDescriptionLines()
+        {
+            using var stream = Assembly.GetCallingAssembly().GetManifestResourceStream("Greenshot.Editor.Resources.emoji-test.txt");
+            using var streamReader = new StreamReader(stream);
+            return streamReader.ReadToEnd().Split('\r', '\n');
+        }
+    }
+
+    sealed class ChunkHelper<T> : IEnumerable<IEnumerable<T>>
+    {
+        public ChunkHelper(IEnumerable<T> elements, int size)
+        {
+            m_elements = elements;
+            m_size = size;
+        }
+
+        public IEnumerator<IEnumerable<T>> GetEnumerator()
+        {
+            using (var enumerator = m_elements.GetEnumerator())
+            {
+                m_has_more = enumerator.MoveNext();
+                while (m_has_more)
+                    yield return GetNextBatch(enumerator).ToList();
+            }
+        }
+
+        private IEnumerable<T> GetNextBatch(IEnumerator<T> enumerator)
+        {
+            for (int i = 0; i < m_size; ++i)
+            {
+                yield return enumerator.Current;
+                m_has_more = enumerator.MoveNext();
+                if (!m_has_more)
+                    yield break;
+            }
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+            => GetEnumerator();
+
+        private readonly IEnumerable<T> m_elements;
+        private readonly int m_size;
+        private bool m_has_more;
+    }
+}
+

src/Greenshot.Editor/Controls/EmojiPicker.xaml

@@ -0,0 +1,129 @@
+<StackPanel x:Class="Greenshot.Editor.Controls.EmojiPicker"
+            x:Name="StackPanel_INTERNAL"
+            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:controls="clr-namespace:Greenshot.Editor.Controls"
+            Orientation="Horizontal"
+            mc:Ignorable="d">
+
+    <StackPanel.Resources>
+
+        <BooleanToVisibilityConverter x:Key="BoolToVis"/>
+
+        <ControlTemplate x:Key="VariationPopupTemplate" TargetType="ContentControl">
+            <ListView Name="VariationListView" ItemsSource="{Binding VariationList}"
+                      BorderThickness="1" Height="Auto" Padding="0" Margin="1"
+                      ScrollViewer.VerticalScrollBarVisibility="Auto"
+                      ScrollViewer.HorizontalScrollBarVisibility="Disabled"
+                      MaxWidth="280"> <!-- 6 columns -->
+                <ListView.ItemsPanel>
+                    <ItemsPanelTemplate>
+                        <WrapPanel/>
+                    </ItemsPanelTemplate>
+                </ListView.ItemsPanel>
+                <ListView.ItemContainerStyle>
+                    <Style TargetType="{x:Type ListViewItem}">
+                        <Setter Property="Padding" Value="0"/>
+                        <Setter Property="Margin" Value="0"/>
+                        <Setter Property="BorderThickness" Value="0"/>
+                    </Style>
+                </ListView.ItemContainerStyle>
+                <ListView.ItemTemplate>
+                    <DataTemplate>
+                        <Button Background="Transparent" BorderBrush="Transparent"
+                                Margin="0" Click="OnEmojiPicked"
+                                Width="40" Height="40" ToolTip="{Binding Path=Name}">
+                            <controls:EmojiControl Height="24" Emoji="{Binding Path=Text, IsAsync=True}"/>
+                        </Button>
+                    </DataTemplate>
+                </ListView.ItemTemplate>
+            </ListView>
+        </ControlTemplate>
+
+        <DataTemplate x:Key="CellTemplate">
+            <ToggleButton Width="40" Height="40" Margin="0" Padding="2"
+                          x:Name="VariationButton" Background="Transparent" BorderBrush="Transparent"
+                          Click="OnEmojiPicked" Focusable="False" ToolTip="{Binding Path=Name}">
+                <Grid>
+                    <controls:EmojiControl Height="24" Margin="4" Emoji="{Binding Path=Text, IsAsync=True}"
+                           VerticalAlignment="Center" HorizontalAlignment="Center"/>
+                    <Polygon Visibility="{Binding HasVariations, Converter={StaticResource BoolToVis}}"
+                             Width="6" Height="6" VerticalAlignment="Bottom" HorizontalAlignment="Right"
+                             Stretch="Fill" Points="0,1 1,1 1,0" Fill="Black"/>
+                    <Popup x:Name="VariationPopup" StaysOpen="False" AllowsTransparency="True" Margin="0"
+                           IsOpen="{Binding IsChecked, ElementName=VariationButton, Mode=TwoWay}">
+                        <ContentControl Template="{StaticResource ResourceKey=VariationPopupTemplate}"/>
+                    </Popup>
+                </Grid>
+            </ToggleButton>
+        </DataTemplate>
+
+    </StackPanel.Resources>
+
+    <ToggleButton x:Name="Button_INTERNAL">
+        <controls:EmojiControl x:Name="Image" Emoji="{Binding ElementName=StackPanel_INTERNAL, Mode=OneWay, Path=Selection, UpdateSourceTrigger=PropertyChanged}"/>
+    </ToggleButton>
+
+    <Popup IsOpen="{Binding IsChecked, ElementName=Button_INTERNAL, Mode=TwoWay}"
+           StaysOpen="False"
+           KeyDown="OnPopupKeyDown" Loaded="OnPopupLoaded"
+           AllowsTransparency="True" Margin="0">
+
+        <TabControl ItemsSource="{Binding EmojiGroups, ElementName=StackPanel_INTERNAL}" Padding="0">
+            <TabControl.ItemTemplate>
+                <DataTemplate>
+                    <Grid>
+                        <controls:EmojiControl Height="24" Emoji="{Binding Icon}">
+                            <Image.ToolTip>
+                                <TextBlock Text="{Binding Name}"/>
+                            </Image.ToolTip>
+                        </controls:EmojiControl>
+                    </Grid>
+                </DataTemplate>
+            </TabControl.ItemTemplate>
+            <TabControl.ContentTemplate>
+                <DataTemplate>
+                    <StackPanel Orientation="Vertical">
+                        <ListView Name="EmojiListView" ItemsSource="{Binding EmojiChunkList}"
+                                  BorderThickness="0"
+                                  MaxHeight="320" Height="Auto" Padding="0" Margin="1"
+                                  ScrollViewer.VerticalScrollBarVisibility="Visible"
+                                  ScrollViewer.HorizontalScrollBarVisibility="Disabled">
+                            <ListView.ItemContainerStyle>
+                                <Style TargetType="{x:Type ListViewItem}">
+                                    <!-- Get rid of the ugly padding and margin in default ListViewItem -->
+                                    <Setter Property="Padding" Value="0"/>
+                                    <Setter Property="Margin" Value="0"/>
+                                    <Setter Property="BorderThickness" Value="0"/>
+                                    <!-- Remove the mouse over highlight -->
+                                    <Setter Property="Template">
+                                        <Setter.Value>
+                                            <ControlTemplate TargetType="{x:Type ListViewItem}">
+                                                <ContentPresenter/>
+                                            </ControlTemplate>
+                                        </Setter.Value>
+                                    </Setter>
+                                </Style>
+                            </ListView.ItemContainerStyle>
+                            <!-- Now for our actual content -->
+                            <ListView.ItemTemplate>
+                                <DataTemplate>
+                                    <ItemsControl ItemsSource="{Binding}"
+                                                  ItemTemplate="{StaticResource ResourceKey=CellTemplate}">
+                                        <ItemsControl.ItemsPanel>
+                                            <ItemsPanelTemplate>
+                                                <StackPanel Orientation="Horizontal"/>
+                                            </ItemsPanelTemplate>
+                                        </ItemsControl.ItemsPanel>
+                                    </ItemsControl>
+                                </DataTemplate>
+                            </ListView.ItemTemplate>
+                        </ListView>
+                    </StackPanel>
+                </DataTemplate>
+            </TabControl.ContentTemplate>
+        </TabControl>
+    </Popup>
+</StackPanel>

src/Greenshot.Editor/Controls/EmojiPicker.xaml.cs

@@ -0,0 +1,123 @@
+//
+//  Emoji.Wpf — Emoji support for WPF
+//
+//  Copyright © 2017—2021 Sam Hocevar <sam@hocevar.net>
+//
+//  This program is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
+//
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Input;
+
+namespace Greenshot.Editor.Controls
+{
+    public class EmojiPickedEventArgs : EventArgs
+    {
+        public EmojiPickedEventArgs() { }
+        public EmojiPickedEventArgs(string emoji) => Emoji = emoji;
+
+        public string Emoji;
+    }
+
+    public delegate void EmojiPickedEventHandler(object sender, EmojiPickedEventArgs e);
+
+    /// <summary>
+    /// Interaction logic for Picker.xaml
+    /// </summary>
+    public partial class EmojiPicker : StackPanel
+    {
+        public EmojiPicker()
+        {
+            InitializeComponent();
+        }
+
+        public IList<EmojiData.Group> EmojiGroups => EmojiData.AllGroups;
+
+        // Backwards compatibility for when the backend was a TextBlock.
+        public double FontSize
+        {
+            get => Image.Height * 0.75;
+            set => Image.Height = value / 0.75;
+        }
+
+        public event PropertyChangedEventHandler SelectionChanged;
+
+        public event EmojiPickedEventHandler Picked;
+
+        private static void OnSelectionPropertyChanged(DependencyObject source,
+                                                       DependencyPropertyChangedEventArgs e)
+        {
+            (source as EmojiPicker)?.OnSelectionChanged(e.NewValue as string);
+        }
+
+        public string Selection
+        {
+            get => (string)GetValue(SelectionProperty);
+            set => SetValue(SelectionProperty, value);
+        }
+
+        private void OnSelectionChanged(string s)
+        {
+            var is_disabled = string.IsNullOrEmpty(s);
+            Image.Emoji = is_disabled ? "???" : s;
+            Image.Opacity = is_disabled ? 0.3 : 1.0;
+            SelectionChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Selection)));
+        }
+
+        private void OnEmojiPicked(object sender, RoutedEventArgs e)
+        {
+            if (sender is Control control && control.DataContext is EmojiData.Emoji emoji)
+            {
+                if (emoji.VariationList.Count == 0 || sender is Button)
+                {
+                    Selection = emoji.Text;
+                    Button_INTERNAL.IsChecked = false;
+                    e.Handled = true;
+                    Picked?.Invoke(this, new EmojiPickedEventArgs(Selection));
+                }
+            }
+        }
+
+        public static readonly DependencyProperty SelectionProperty = DependencyProperty.Register(
+            nameof(Selection), typeof(string), typeof(EmojiPicker),
+                new FrameworkPropertyMetadata("☺", OnSelectionPropertyChanged));
+
+        private void OnPopupKeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.Key == Key.Escape && sender is Popup popup)
+            {
+                popup.IsOpen = false;
+                e.Handled = true;
+            }
+        }
+
+        private void OnPopupLoaded(object sender, RoutedEventArgs e)
+        {
+            if (!(sender is Popup popup))
+                return;
+
+            var child = popup.Child;
+            IInputElement old_focus = null;
+            child.Focusable = true;
+            child.IsVisibleChanged += (o, ea) =>
+            {
+                if (child.IsVisible)
+                {
+                    old_focus = Keyboard.FocusedElement;
+                    Keyboard.Focus(child);
+                }
+            };
+
+            popup.Closed += (o, ea) => Keyboard.Focus(old_focus);
+        }
+    }
+}

src/Greenshot.Editor/Drawing/EmojiContainer.cs

@@ -30,9 +30,9 @@ using System.Windows.Forms;
 using System.Windows.Forms.Integration;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
-using Emoji.Wpf;
 using Greenshot.Base.Core;
 using Greenshot.Base.Interfaces.Drawing;
+using Greenshot.Editor.Controls;
 using Greenshot.Editor.Helpers;
 using Image = System.Drawing.Image;
 using Matrix = System.Drawing.Drawing2D.Matrix;
@@ -48,7 +48,7 @@ namespace Greenshot.Editor.Drawing
     {
         [NonSerialized] private static EmojiContainer _currentContainer;
         [NonSerialized] private static ElementHost _emojiPickerHost;
-        [NonSerialized] private static Picker _emojiPicker;
+        [NonSerialized] private static EmojiPicker _emojiPicker;
 
         [NonSerialized] private bool _justCreated = true;
         [NonSerialized] private Image _cachedImage = null;
@@ -106,7 +106,7 @@ namespace Greenshot.Editor.Drawing
             _emojiPickerHost = _parent.Controls.Find("EmojiPickerHost", false).OfType<ElementHost>().FirstOrDefault();
             if (_emojiPickerHost == null)
             {
-                _emojiPicker = new Picker();
+                _emojiPicker = new EmojiPicker();
                 _emojiPicker.Picked += (_, args) =>
                 {
                     _currentContainer.Emoji = args.Emoji;
@@ -207,19 +207,7 @@ namespace Greenshot.Editor.Drawing
 
         private Image ComputeBitmap(int iconSize)
         {
-            // Create WPF control that will be used to render the emoji
+            return EmojiRenderer.GetBitmap(Emoji, iconSize);
-            var image = new System.Windows.Controls.Image();
-            global::Emoji.Wpf.Image.SetSource(image, Emoji);
-
-            image.RenderTransformOrigin = new System.Windows.Point(0.5, 0.5);
-            image.RenderTransform = new RotateTransform(_rotationAngle);
-            image.Measure(new Size(iconSize, iconSize));
-            image.Arrange(new Rect(0, 0, iconSize, iconSize));
-
-            var renderTargetBitmap = new RenderTargetBitmap(iconSize, iconSize, 96, 96, PixelFormats.Pbgra32);
-            renderTargetBitmap.Render(image);
-
-            return renderTargetBitmap.ToBitmap();
         }
 
         private void ResetCachedBitmap()
@@ -231,9 +219,9 @@ namespace Greenshot.Editor.Drawing
 
     internal static class PickerExtensions
     {
-        public static void ShowPopup(this Picker picker, bool show)
+        public static void ShowPopup(this EmojiPicker emojiPicker, bool show)
         {
-            foreach (var child in picker.Children)
+            foreach (var child in emojiPicker.Children)
             {
                 if (child is ToggleButton button)
                 {

src/Greenshot.Editor/Drawing/EmojiRenderer.cs

@@ -0,0 +1,86 @@
+using System.Drawing;
+using System.IO;
+using System.Reflection;
+using System.Windows.Media.Imaging;
+using SixLabors.Fonts;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.Advanced;
+using SixLabors.ImageSharp.Drawing.Processing;
+using SixLabors.ImageSharp.Formats.Png;
+using SixLabors.ImageSharp.PixelFormats;
+using SixLabors.ImageSharp.Processing;
+using FontStyle = SixLabors.Fonts.FontStyle;
+using Image = System.Drawing.Image;
+
+namespace Greenshot.Editor.Drawing
+{
+    internal static class EmojiRenderer
+    {
+        private static SixLabors.Fonts.FontFamily? _fontFamily;
+
+        public static Image<Rgba32> GetImage(string emoji, int iconSize)
+        {
+            if (_fontFamily == null)
+            {
+                using var stream = Assembly.GetCallingAssembly().GetManifestResourceStream("Greenshot.Editor.Resources.TwemojiMozilla.ttf");
+                var fontCollection = new FontCollection();
+                fontCollection.Add(stream);
+                if (fontCollection.TryGet("Twemoji Mozilla", out var fontFamily))
+                {
+                    _fontFamily = fontFamily;
+                }
+            }
+
+            var font = _fontFamily.Value.CreateFont(iconSize, FontStyle.Regular);
+            var image = new Image<Rgba32>(iconSize, iconSize);
+
+            var textOptions = new TextOptions(font) {  Origin = new SixLabors.ImageSharp.PointF(0, iconSize / 2.0f), HorizontalAlignment = HorizontalAlignment.Left, VerticalAlignment = VerticalAlignment.Center };
+
+            image.Mutate(x => x.DrawText(textOptions, emoji, SixLabors.ImageSharp.Color.Black));
+            return image;
+        }
+
+        public static Image GetBitmap(string emoji, int iconSize)
+        {
+            using var image = GetImage(emoji, iconSize);
+            return image.ToBitmap();
+        }
+
+        public static BitmapSource GetBitmapSource(string emoji, int iconSize)
+        {
+            using var image = GetImage(emoji, iconSize);
+            return image.ToBitmapSource();
+        }
+
+        public static Bitmap ToBitmap(this Image<Rgba32> image)
+        {
+            using var memoryStream = new MemoryStream();
+
+            var imageEncoder = image.GetConfiguration().ImageFormatsManager.FindEncoder(PngFormat.Instance);
+            image.Save(memoryStream, imageEncoder);
+
+            memoryStream.Seek(0, SeekOrigin.Begin);
+
+            return new Bitmap(memoryStream);
+        }
+
+        public static BitmapSource ToBitmapSource(this Image<Rgba32> image)
+        {
+            using var memoryStream = new MemoryStream();
+
+            var imageEncoder = image.GetConfiguration().ImageFormatsManager.FindEncoder(PngFormat.Instance);
+            image.Save(memoryStream, imageEncoder);
+
+            memoryStream.Seek(0, SeekOrigin.Begin);
+
+            var bitmap = new BitmapImage();
+            bitmap.BeginInit();
+            bitmap.StreamSource = memoryStream;
+            bitmap.CacheOption = BitmapCacheOption.OnLoad;
+            bitmap.EndInit();
+            bitmap.Freeze();
+
+            return bitmap;
+        }
+    }
+}

src/Greenshot.Editor/Greenshot.Editor.csproj

@@ -5,7 +5,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Emoji.Wpf" Version="0.3.3" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.0.0-alpha.0.156" />
   </ItemGroup>
 
   <ItemGroup>
@@ -83,9 +83,16 @@
     <EmbeddedResource Update="Forms\ImageEditorForm.resx">
       <DependentUpon>ImageEditorForm.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="Resources\emoji-test.txt" />
+    <EmbeddedResource Include="Resources\TwemojiMozilla.ttf" />
   </ItemGroup>
 
   <ItemGroup>
-    <Folder Include="Resources\" />
+    <Reference Include="SixLabors.Fonts">
+      <HintPath>..\SixLabors.Fonts.dll</HintPath>
+    </Reference>
+    <Reference Include="SixLabors.ImageSharp.Drawing">
+      <HintPath>..\SixLabors.ImageSharp.Drawing.dll</HintPath>
+    </Reference>
   </ItemGroup>
 </Project>