From 84ea24860154d14c8ffacc68a2a6df74787ec261 Mon Sep 17 00:00:00 2001
From: "DESKTOP-3BO4HSG\\ksat" <zggsong@foxmail.com>
Date: Wed, 18 Jan 2023 11:28:06 +0800
Subject: [PATCH] perf: add keydown to textbox

---
 STranslate/View/SettingsWindow.xaml    | 217 ++++++++++++-------------
 STranslate/View/SettingsWindow.xaml.cs |  50 ++++++
 STranslate/ViewModel/SettingsVM.cs     |  15 --
 3 files changed, 154 insertions(+), 128 deletions(-)

diff --git a/STranslate/View/SettingsWindow.xaml b/STranslate/View/SettingsWindow.xaml
index b74e7d1..0703ba2 100644
--- a/STranslate/View/SettingsWindow.xaml
+++ b/STranslate/View/SettingsWindow.xaml
@@ -120,127 +120,118 @@
                 <StackPanel Margin="20">
                     <GroupBox Header="快捷键">
                         <Grid Margin="20,10,20,10">
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="Auto"/>
-                            <ColumnDefinition Width="Auto"/>
-                            <ColumnDefinition Width="100*"/>
-                        </Grid.ColumnDefinitions>
-                        <Grid.RowDefinitions>
-                            <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
-                        </Grid.RowDefinitions>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="Auto"/>
+                                <ColumnDefinition Width="Auto"/>
+                                <ColumnDefinition Width="100*"/>
+                            </Grid.ColumnDefinitions>
+                            <Grid.RowDefinitions>
+                                <RowDefinition Height="Auto"/>
+                                <RowDefinition Height="Auto"/>
+                                <RowDefinition Height="Auto"/>
+                                <RowDefinition Height="Auto"/>
+                                <RowDefinition Height="Auto"/>
+                                <RowDefinition Height="Auto"/>
+                            </Grid.RowDefinitions>
 
-                        <Label Content="划词翻译"
-                               VerticalAlignment="Center"
-                               Grid.Row="1"
-                               Grid.Column="0"
-                               Margin="0,5,0,0" />
-                        <TextBox x:Name="CrossWord_TextBox"
-                                 Cursor="Arrow"
-                                 Width="200"
-                                 Grid.Row="1"
-                                 Grid.Column="1"
-                                 Margin="0,5,0,0"
-                                 CaretBrush="Transparent"
-                                 VerticalContentAlignment="Center"
-                                 InputMethod.IsInputMethodEnabled="False">
-                            <i:Interaction.Triggers>
-                                <i:EventTrigger EventName="PreviewKeyDown">
-                                    <i:InvokeCommandAction Command="{Binding PreviewKeyDownCmd}"
-                                                            CommandParameter="{Binding ElementName=CrossWord_TextBox}"/>
-                                </i:EventTrigger>
-                                <i:EventTrigger EventName="KeyUp">
-                                    <i:InvokeCommandAction Command="{Binding CrossWordKeyUpCmd}"/>
-                                </i:EventTrigger>
-                            </i:Interaction.Triggers>
-                        </TextBox>
-                        <Label Grid.Row="1"
-                               Grid.Column="2"
-                               Margin="0,5,0,0"
-                               Content="热键冲突"
-                               VerticalAlignment="Center"
-                               Visibility="Hidden"
-                               Foreground="Red" />
+                            <Label Content="划词翻译"
+                                   VerticalAlignment="Center"
+                                   Grid.Row="1"
+                                   Grid.Column="0"
+                                   Margin="0,5,0,0" />
+                            <TextBox Cursor="Arrow"
+                                     Width="200"
+                                     Grid.Row="1"
+                                     Grid.Column="1"
+                                     Margin="0,5,0,0"
+                                     CaretBrush="Transparent"
+                                     VerticalContentAlignment="Center"
+                                     InputMethod.IsInputMethodEnabled="False"
+                                     PreviewKeyDown="HotKeyTextBox_PreviewKeyDown"
+                                     KeyUp="CrossWord_KeyUp"/>
+                            <Label Grid.Row="1"
+                                   Grid.Column="2"
+                                   Margin="0,5,0,0"
+                                   Content="热键冲突"
+                                   VerticalAlignment="Center"
+                                   Visibility="Hidden"
+                                   Foreground="Red" />
 
-                            
-                        <Label Content="截图翻译"
-                               VerticalAlignment="Center"
-                               Grid.Row="2"
-                               Grid.Column="0"
-                               Margin="0,5,0,0" />
-                        <TextBox Cursor="Arrow"
-                                 Width="200"
-                                 Grid.Row="2"
-                                 Grid.Column="1"
-                                 Margin="0,5,0,0"
-                                 CaretBrush="Transparent"
-                                 VerticalContentAlignment="Center"
-                                 InputMethod.IsInputMethodEnabled="False"/>
-                        <Label Grid.Row="2"
-                               Grid.Column="2"
-                               Margin="0,5,0,0"
-                               Content="热键冲突"
-                               VerticalAlignment="Center"
-                               Visibility="Hidden"
-                               Foreground="Red" />
+
+                            <Label Content="截图翻译"
+                                   VerticalAlignment="Center"
+                                   Grid.Row="2"
+                                   Grid.Column="0"
+                                   Margin="0,5,0,0" />
+                            <TextBox Cursor="Arrow"
+                                     Width="200"
+                                     Grid.Row="2"
+                                     Grid.Column="1"
+                                     Margin="0,5,0,0"
+                                     CaretBrush="Transparent"
+                                     VerticalContentAlignment="Center"
+                                     InputMethod.IsInputMethodEnabled="False"/>
+                            <Label Grid.Row="2"
+                                   Grid.Column="2"
+                                   Margin="0,5,0,0"
+                                   Content="热键冲突"
+                                   VerticalAlignment="Center"
+                                   Visibility="Hidden"
+                                   Foreground="Red" />
 
                             
-                        <Label Content="输入翻译"
-                               VerticalAlignment="Center"
-                               Grid.Row="3"
-                               Grid.Column="0"
-                               Margin="0,5,0,0" />
-                        <TextBox Cursor="Arrow"
-                                 Width="200"
-                                 Grid.Row="3"
-                                 Grid.Column="1"
-                                 Margin="0,5,0,0"
-                                 CaretBrush="Transparent"
-                                 VerticalContentAlignment="Center"
-                                 InputMethod.IsInputMethodEnabled="False"/>
-                        <Label Grid.Row="3"
-                               Grid.Column="2"
-                               Margin="0,5,0,0"
-                               Content="热键冲突"
-                               VerticalAlignment="Center"
-                               Visibility="Hidden"
-                               Foreground="Red" />
+                            <Label Content="输入翻译"
+                                   VerticalAlignment="Center"
+                                   Grid.Row="3"
+                                   Grid.Column="0"
+                                   Margin="0,5,0,0" />
+                            <TextBox Cursor="Arrow"
+                                     Width="200"
+                                     Grid.Row="3"
+                                     Grid.Column="1"
+                                     Margin="0,5,0,0"
+                                     CaretBrush="Transparent"
+                                     VerticalContentAlignment="Center"
+                                     InputMethod.IsInputMethodEnabled="False"/>
+                            <Label Grid.Row="3"
+                                   Grid.Column="2"
+                                   Margin="0,5,0,0"
+                                   Content="热键冲突"
+                                   VerticalAlignment="Center"
+                                   Visibility="Hidden"
+                                   Foreground="Red" />
                             
                             
-                        <Label Content="显示界面"
-                               VerticalAlignment="Center"
-                               Grid.Row="4"
-                               Grid.Column="0"
-                               Margin="0,5,0,0" />
-                        <TextBox Cursor="Arrow"
-                                 Width="200"
-                                 Grid.Row="4"
-                                 Grid.Column="1"
-                                 Margin="0,5,0,0"
-                                 CaretBrush="Transparent"
-                                 VerticalContentAlignment="Center"
-                                 InputMethod.IsInputMethodEnabled="False"/>
-                        <Label Grid.Row="4"
-                               Grid.Column="2"
-                               Margin="0,5,0,0"
-                               Content="热键冲突"
-                               VerticalAlignment="Center"
-                               Visibility="Hidden"
-                               Foreground="Red" />
+                            <Label Content="显示界面"
+                                   VerticalAlignment="Center"
+                                   Grid.Row="4"
+                                   Grid.Column="0"
+                                   Margin="0,5,0,0" />
+                            <TextBox Cursor="Arrow"
+                                     Width="200"
+                                     Grid.Row="4"
+                                     Grid.Column="1"
+                                     Margin="0,5,0,0"
+                                     CaretBrush="Transparent"
+                                     VerticalContentAlignment="Center"
+                                     InputMethod.IsInputMethodEnabled="False"/>
+                            <Label Grid.Row="4"
+                                   Grid.Column="2"
+                                   Margin="0,5,0,0"
+                                   Content="热键冲突"
+                                   VerticalAlignment="Center"
+                                   Visibility="Hidden"
+                                   Foreground="Red" />
 
                             
-                        <Button Content="恢复默认"
-                                Template="{StaticResource buttonstyle}"
-                                Width="80"
-                                Grid.Row="5"
-                                Margin="5" 
-                                Grid.Column="1"
-                                Command="{Binding ResetHotKeysCmd}"/>
-                    </Grid>
+                            <Button Content="恢复默认"
+                                    Template="{StaticResource buttonstyle}"
+                                    Width="80"
+                                    Grid.Row="5"
+                                    Margin="5" 
+                                    Grid.Column="1"
+                                    Command="{Binding ResetHotKeysCmd}"/>
+                        </Grid>
                     </GroupBox>
                 </StackPanel>
 
diff --git a/STranslate/View/SettingsWindow.xaml.cs b/STranslate/View/SettingsWindow.xaml.cs
index 0351a9d..383154c 100644
--- a/STranslate/View/SettingsWindow.xaml.cs
+++ b/STranslate/View/SettingsWindow.xaml.cs
@@ -29,5 +29,55 @@ namespace STranslate.View
 
             DataContext = ViewModel.SettingsVM.Instance;
         }
+
+        private byte _hotkeysModifiers;
+        private int _hotkeysKey;
+        private string _hotkeysText = string.Empty;
+
+        private void HotKeyTextBox_PreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            e.Handled = true;
+            _hotkeysModifiers = 0;
+            _hotkeysKey = 0;
+            _hotkeysText = "";
+            Key key = (e.Key == Key.System ? e.SystemKey : e.Key);
+            if (key == Key.LeftShift || key == Key.RightShift
+                || key == Key.LeftCtrl || key == Key.RightCtrl
+                || key == Key.LeftAlt || key == Key.RightAlt
+                || key == Key.LWin || key == Key.RWin)
+            {
+                return;
+            }
+            StringBuilder shortcutText = new StringBuilder();
+            if ((Keyboard.Modifiers & ModifierKeys.Control) != 0)
+            {
+                _hotkeysModifiers += 2;
+                shortcutText.Append("Ctrl + ");
+            }
+            if ((Keyboard.Modifiers & ModifierKeys.Shift) != 0)
+            {
+                _hotkeysModifiers += 4;
+                shortcutText.Append("Shift + ");
+            }
+            if ((Keyboard.Modifiers & ModifierKeys.Alt) != 0)
+            {
+                _hotkeysModifiers += 1;
+                shortcutText.Append("Alt + ");
+            }
+            if (_hotkeysModifiers == 0 && (key < Key.F1 || key > Key.F12))
+            {
+                _hotkeysKey = 0;
+                shortcutText.Clear();
+                ((System.Windows.Controls.TextBox)sender).Text = _hotkeysText = "";
+                return;
+            }
+            _hotkeysKey = KeyInterop.VirtualKeyFromKey(key);
+            shortcutText.Append(key.ToString());
+            ((System.Windows.Controls.TextBox)sender).Text = _hotkeysText = shortcutText.ToString();
+        }
+        private void CrossWord_KeyUp(object sender, KeyEventArgs e)
+        {
+
+        }
     }
 }
diff --git a/STranslate/ViewModel/SettingsVM.cs b/STranslate/ViewModel/SettingsVM.cs
index 03894a9..cbecf51 100644
--- a/STranslate/ViewModel/SettingsVM.cs
+++ b/STranslate/ViewModel/SettingsVM.cs
@@ -91,16 +91,6 @@ namespace STranslate.ViewModel
                       MessageBox.Show($"未找到默认应用\n{ex.Message}");
                   }
               });
-
-            PreviewKeyDownCmd = new RelayCommand((_) => true, (o) =>
-            {
-                System.Diagnostics.Debug.Print($"Press key, control: {o}");
-            });
-
-            CrossWordKeyUpCmd = new RelayCommand((_) => true, (_) =>
-            {
-                System.Diagnostics.Debug.Print($"Key up");
-            });
         }
 
 
@@ -125,11 +115,6 @@ namespace STranslate.ViewModel
         public ICommand StartupCmd { get; private set; }
         public ICommand EscCmd { get; private set; }
         public ICommand ResetHotKeysCmd { get; private set; }
-        /// <summary>
-        /// 按键按下事件
-        /// </summary>
-        public ICommand PreviewKeyDownCmd { get; private set; }
-        public ICommand CrossWordKeyUpCmd { get; private set; }
 
 
         private static SettingsVM _instance;