Hotkey picker

src/SoulSplitter/UI/EldenRing/EldenRingControl.xaml

@@ -108,8 +108,10 @@
 
         <!-- row ============================================================================================================================================================================================== -->
 
+        <generic:HotkeyPicker Grid.Row="{StaticResource StartAutomaticallyRow}"/>
+
         <CheckBox
-            Grid.Row="{StaticResource StartAutomaticallyRow}"
+            Grid.Row="2"
             Margin="5"
             Content="Start automatically" 
             IsChecked="{Binding StartAutomatically}"/>

src/SoulSplitter/UI/Generic/HotkeyPicker.xaml

@@ -0,0 +1,48 @@
+<!-- This file is part of the SoulSplitter distribution (https://github.com/FrankvdStam/SoulSplitter).
+     Copyright (c) 2022 Frank van der Stam.
+     https://github.com/FrankvdStam/SoulSplitter/blob/main/LICENSE
+     
+     This program is free software: you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published by
+     the Free Software Foundation, version 3.
+     
+     This program is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+     General Public License for more details.
+     
+     You should have received a copy of the GNU General Public License
+     along with this program. If not, see<http://www.gnu.org/licenses/> .  -->
+
+
+<UserControl x:Class="SoulSplitter.UI.Generic.HotkeyPicker"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:SoulSplitter.UI.Generic"
+             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+             xmlns:validation="clr-namespace:SoulSplitter.UI.Validation"
+             mc:Ignorable="d" 
+             d:DataContext="{d:DesignInstance local:BaseViewModel, IsDesignTimeCreatable=True}">
+
+    <UserControl.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+
+                <!-- Material design -->
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/materialdesigncolor.indigo.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.indigo.xaml" />
+
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </UserControl.Resources>
+
+    <TextBox 
+        IsReadOnly="True"
+        PreviewMouseDown="OnPreviewMouseDown"
+        PreviewKeyDown="OnPreviewKeyDown"
+        PreviewLostKeyboardFocus="OnPreviewLostKeyboardFocus"/>
+</UserControl>

src/SoulSplitter/UI/Generic/HotkeyPicker.xaml.cs

@@ -0,0 +1,130 @@
+// This file is part of the SoulSplitter distribution (https://github.com/FrankvdStam/SoulSplitter).
+// Copyright (c) 2022 Frank van der Stam.
+// https://github.com/FrankvdStam/SoulSplitter/blob/main/LICENSE
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+using System.Collections.Generic;
+using System.Globalization;
+using System.Windows.Forms;
+using System.Windows.Input;
+using SoulSplitter.UI.EldenRing;
+using KeyEventArgs = System.Windows.Input.KeyEventArgs;
+using TextBox = System.Windows.Controls.TextBox;
+using UserControl = System.Windows.Controls.UserControl;
+
+namespace SoulSplitter.UI.Generic
+{
+    /// <summary>
+    /// Interaction logic for HotkeyPicker.xaml
+    /// </summary>
+    public partial class HotkeyPicker : UserControl
+    {
+        public HotkeyPicker()
+        {
+            InitializeComponent();
+        }
+
+        public class HotkeyCompletedParameter
+        {
+            public object Sender;
+            public ModifierKeys ModifierKeys;
+            public Key Key;
+        }
+
+        public RelayCommand HotkeyCompletedCommand { get; set; }
+
+        private bool _isActive = false;
+        private ModifierKeys _modifierKeys = ModifierKeys.None;
+        private Key _key = Key.None;
+        private void OnPreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            if (_isActive)
+            {
+                if (e.IsDown && sender is TextBox textBox)
+                {
+                    //Get modifier key and remember state
+                    if (_modifierKeysLookup.TryGetValue(e.Key, out ModifierKeys modifierKeys))
+                    {
+                        if (!_modifierKeys.HasFlag(modifierKeys))
+                        {
+                            if (!string.IsNullOrWhiteSpace(textBox.Text))
+                            {
+                                textBox.Text += " + ";
+                            }
+
+                            textBox.Text += modifierKeys;
+                            _modifierKeys |= modifierKeys;
+                        }
+                    }
+                    else //get regular key, end listening for keypresses, invoke command
+                    {
+                        if (!string.IsNullOrWhiteSpace(textBox.Text))
+                        {
+                            textBox.Text += " + ";
+                        }
+
+                        textBox.Text += e.Key;
+                        _key = e.Key;
+
+                        HotkeyCompletedCommand?.Execute(new HotkeyCompletedParameter
+                        {
+                            Sender = this,
+                            Key = _key,
+                            ModifierKeys = _modifierKeys
+                        });
+                        _isActive = false;
+                    }
+
+                    var converter = new ModifierKeysConverter();
+                    e.Handled = true;
+                }
+            }
+        }
+
+        private void OnPreviewMouseDown(object sender, MouseButtonEventArgs e)
+        {
+            if (!_isActive && sender is TextBox textBox)
+            {
+                _isActive = true;
+                _key = Key.None;
+                _modifierKeys = ModifierKeys.None;
+                textBox.Text = "";
+            }
+        }
+
+        private static Dictionary<Key, ModifierKeys> _modifierKeysLookup = new Dictionary<Key, ModifierKeys>()
+        {
+            { Key.LeftAlt, ModifierKeys.Alt },
+            { Key.RightAlt, ModifierKeys.Alt },
+            { Key.System, ModifierKeys.Alt },
+            { Key.LeftCtrl, ModifierKeys.Control },
+            { Key.RightCtrl, ModifierKeys.Control },
+            { Key.LeftShift, ModifierKeys.Shift },
+            { Key.RightShift, ModifierKeys.Shift },
+            { Key.LWin, ModifierKeys.Windows },
+            { Key.RWin, ModifierKeys.Windows },
+        };
+
+        private void OnPreviewLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
+        {
+            if (_isActive && sender is TextBox textBox)
+            {
+                _isActive = false;
+                _key = Key.None;
+                _modifierKeys = ModifierKeys.None;
+                textBox.Text = "";
+            }
+        }
+    }
+}

src/cli/Program.cs

@@ -41,6 +41,8 @@ internal class Program
         [STAThread]
         static void Main(string[] args)
         {
+            TestUi();
+
             GlobalHotKey.RegisterHotKey(ModifierKeys.Alt, Key.A, () =>{ Debug.WriteLine("A"); });
             GlobalHotKey.RegisterHotKey(ModifierKeys.Alt, Key.S, () =>{ Debug.WriteLine("S"); });
             GlobalHotKey.RegisterHotKey(ModifierKeys.Alt, Key.D, () =>{ Debug.WriteLine("D"); });