[Phase L2-3] 클립보드 이미지 미리보기 창 구현

신규 파일:
- ClipboardImagePreviewWindow.xaml (신규, 140줄):
  WindowStyle=None, 커스텀 타이틀바, 이미지 ScaleTransform 줌,
  하단 툴바(축소/줌레이블/확대 / 1:1 / 창맞춤 / 저장 / 복사)
- ClipboardImagePreviewWindow.xaml.cs (신규, 173줄):
  원본 해상도 이미지 로드(OriginalImagePath → 썸네일 폴백),
  FitToWindow() 초기 자동 맞춤, ApplyZoom(ScaleTransform),
  Ctrl+휠 줌, 키보드 단축키(+/-/0/F/Esc/Ctrl+C/Ctrl+S),
  PNG·JPEG·BMP 저장(SaveFileDialog), NotificationCenterService 피드백

변경 파일:
- LauncherWindow.Keyboard.cs: Shift+Enter 시 ClipboardEntry 이미지 항목 → 미리보기 창 열기(기존 폴더열기 분기 전에 추가)
- LauncherWindow.ShortcutHelp.cs: "Shift+Enter — 대형 텍스트 / 이미지 미리보기 (#)" 안내 갱신

빌드: 경고 0, 오류 0

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/AxCopilot/Views/ClipboardImagePreviewWindow.xaml

@@ -0,0 +1,225 @@
+<Window x:Class="AxCopilot.Views.ClipboardImagePreviewWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="AX Copilot — 이미지 미리보기"
+        Width="820" Height="640"
+        WindowStyle="None" AllowsTransparency="True"
+        Background="Transparent"
+        WindowStartupLocation="CenterScreen"
+        ResizeMode="CanResizeWithGrip"
+        MinWidth="320" MinHeight="260">
+
+    <!-- Phase L2-3: 클립보드 이미지 미리보기 창 -->
+
+    <Border Background="{DynamicResource LauncherBackground}" CornerRadius="12"
+            BorderBrush="{DynamicResource BorderColor}" BorderThickness="1"
+            Margin="6">
+        <Border.Effect>
+            <DropShadowEffect BlurRadius="20" ShadowDepth="4" Opacity="0.3" Color="Black" Direction="270"/>
+        </Border.Effect>
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="44"/>   <!-- 타이틀바 -->
+                <RowDefinition Height="*"/>    <!-- 이미지 영역 -->
+                <RowDefinition Height="46"/>   <!-- 하단 툴바 -->
+            </Grid.RowDefinitions>
+
+            <!-- ─── 타이틀바 ─────────────────────────────────────────────── -->
+            <Border Grid.Row="0" CornerRadius="12,12,0,0"
+                    Background="{DynamicResource ItemBackground}"
+                    MouseLeftButtonDown="TitleBar_MouseDown">
+                <Grid Margin="16,0,8,0">
+                    <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
+                        <!-- 이미지 아이콘 -->
+                        <TextBlock Text="&#xEB9F;" FontFamily="Segoe MDL2 Assets" FontSize="15"
+                                   Foreground="{DynamicResource AccentColor}"
+                                   VerticalAlignment="Center" Margin="0,1,10,0"/>
+                        <TextBlock Text="이미지 미리보기"
+                                   FontSize="13" FontWeight="SemiBold"
+                                   Foreground="{DynamicResource PrimaryText}"
+                                   VerticalAlignment="Center"/>
+                        <TextBlock x:Name="SizeLabel" Text=""
+                                   FontSize="11" Foreground="{DynamicResource SecondaryText}"
+                                   VerticalAlignment="Center" Margin="12,0,0,0"/>
+                    </StackPanel>
+
+                    <!-- 닫기 버튼 -->
+                    <Border x:Name="BtnClose" HorizontalAlignment="Right" VerticalAlignment="Center"
+                            CornerRadius="4" Padding="8,4" Cursor="Hand"
+                            MouseLeftButtonUp="BtnClose_Click">
+                        <Border.Style>
+                            <Style TargetType="Border">
+                                <Setter Property="Background" Value="Transparent"/>
+                                <Style.Triggers>
+                                    <Trigger Property="IsMouseOver" Value="True">
+                                        <Setter Property="Background" Value="#40C05050"/>
+                                    </Trigger>
+                                </Style.Triggers>
+                            </Style>
+                        </Border.Style>
+                        <TextBlock Text="&#xE711;" FontFamily="Segoe MDL2 Assets" FontSize="13"
+                                   Foreground="{DynamicResource SecondaryText}"/>
+                    </Border>
+                </Grid>
+            </Border>
+
+            <!-- ─── 이미지 영역 ────────────────────────────────────────────── -->
+            <ScrollViewer Grid.Row="1" x:Name="ImageScroll"
+                          HorizontalScrollBarVisibility="Auto"
+                          VerticalScrollBarVisibility="Auto"
+                          Background="{DynamicResource LauncherBackground}"
+                          PreviewMouseWheel="ImageScroll_PreviewMouseWheel">
+                <Grid HorizontalAlignment="Center" VerticalAlignment="Center" Margin="8">
+                    <Image x:Name="PreviewImage"
+                           RenderOptions.BitmapScalingMode="HighQuality"
+                           Stretch="None"
+                           HorizontalAlignment="Center" VerticalAlignment="Center">
+                        <Image.LayoutTransform>
+                            <ScaleTransform x:Name="ZoomTransform" ScaleX="1" ScaleY="1"/>
+                        </Image.LayoutTransform>
+                    </Image>
+                </Grid>
+            </ScrollViewer>
+
+            <!-- ─── 하단 툴바 ─────────────────────────────────────────────── -->
+            <Border Grid.Row="2" CornerRadius="0,0,12,12"
+                    Background="{DynamicResource ItemBackground}"
+                    BorderBrush="{DynamicResource BorderColor}" BorderThickness="0,1,0,0">
+                <Grid Margin="12,0">
+
+                    <!-- 좌측: 줌 컨트롤 -->
+                    <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
+
+                        <!-- 축소 버튼 -->
+                        <Border CornerRadius="6" Padding="8,5" Cursor="Hand" Margin="0,0,2,0"
+                                ToolTip="축소 (−)" MouseLeftButtonUp="BtnZoomOut_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="Transparent"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Background" Value="{DynamicResource ItemHoverBackground}"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <TextBlock Text="&#xE1A9;" FontFamily="Segoe MDL2 Assets" FontSize="13"
+                                       Foreground="{DynamicResource PrimaryText}"/>
+                        </Border>
+
+                        <!-- 줌 퍼센트 라벨 -->
+                        <Border CornerRadius="4" Padding="6,4" Margin="2,0"
+                                Background="{DynamicResource HintBackground}">
+                            <TextBlock x:Name="ZoomLabel" Text="100%"
+                                       FontSize="11" FontWeight="Medium"
+                                       Foreground="{DynamicResource PrimaryText}"
+                                       MinWidth="44" TextAlignment="Center"/>
+                        </Border>
+
+                        <!-- 확대 버튼 -->
+                        <Border CornerRadius="6" Padding="8,5" Cursor="Hand" Margin="2,0,6,0"
+                                ToolTip="확대 (+)" MouseLeftButtonUp="BtnZoomIn_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="Transparent"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Background" Value="{DynamicResource ItemHoverBackground}"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <TextBlock Text="&#xE1A8;" FontFamily="Segoe MDL2 Assets" FontSize="13"
+                                       Foreground="{DynamicResource PrimaryText}"/>
+                        </Border>
+
+                        <!-- 구분선 -->
+                        <Border Width="1" Height="20" Margin="2,0,8,0"
+                                Background="{DynamicResource BorderColor}"/>
+
+                        <!-- 실제 크기 -->
+                        <Border CornerRadius="6" Padding="8,5" Cursor="Hand" Margin="0,0,2,0"
+                                ToolTip="실제 크기 (0)" MouseLeftButtonUp="BtnActualSize_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="Transparent"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Background" Value="{DynamicResource ItemHoverBackground}"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <TextBlock Text="1:1" FontSize="11" FontWeight="Bold"
+                                       Foreground="{DynamicResource SecondaryText}"/>
+                        </Border>
+
+                        <!-- 창에 맞추기 -->
+                        <Border CornerRadius="6" Padding="8,5" Cursor="Hand"
+                                ToolTip="창에 맞추기 (F)" MouseLeftButtonUp="BtnFitToWindow_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="Transparent"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Background" Value="{DynamicResource ItemHoverBackground}"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <TextBlock Text="&#xE744;" FontFamily="Segoe MDL2 Assets" FontSize="13"
+                                       Foreground="{DynamicResource SecondaryText}"/>
+                        </Border>
+                    </StackPanel>
+
+                    <!-- 우측: 복사 / 저장 버튼 -->
+                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Center">
+
+                        <!-- 파일로 저장 -->
+                        <Border CornerRadius="8" Padding="12,6" Cursor="Hand" Margin="0,0,8,0"
+                                ToolTip="파일로 저장 (Ctrl+S)"
+                                MouseLeftButtonUp="BtnSave_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="{DynamicResource ItemBackground}"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Background" Value="{DynamicResource ItemHoverBackground}"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <StackPanel Orientation="Horizontal">
+                                <TextBlock Text="&#xE74E;" FontFamily="Segoe MDL2 Assets" FontSize="12"
+                                           Foreground="{DynamicResource SecondaryText}" VerticalAlignment="Center"/>
+                                <TextBlock Text=" 저장" FontSize="12"
+                                           Foreground="{DynamicResource SecondaryText}" Margin="4,0,0,0"/>
+                            </StackPanel>
+                        </Border>
+
+                        <!-- 클립보드 복사 -->
+                        <Border CornerRadius="8" Padding="12,6" Cursor="Hand"
+                                ToolTip="클립보드에 복사 (Ctrl+C)"
+                                MouseLeftButtonUp="BtnCopy_Click">
+                            <Border.Style>
+                                <Style TargetType="Border">
+                                    <Setter Property="Background" Value="{DynamicResource AccentColor}"/>
+                                    <Style.Triggers>
+                                        <Trigger Property="IsMouseOver" Value="True">
+                                            <Setter Property="Opacity" Value="0.85"/>
+                                        </Trigger>
+                                    </Style.Triggers>
+                                </Style>
+                            </Border.Style>
+                            <StackPanel Orientation="Horizontal">
+                                <TextBlock Text="&#xE8C8;" FontFamily="Segoe MDL2 Assets" FontSize="12"
+                                           Foreground="White" VerticalAlignment="Center"/>
+                                <TextBlock Text=" 복사" FontSize="12" Foreground="White" Margin="4,0,0,0"/>
+                            </StackPanel>
+                        </Border>
+                    </StackPanel>
+                </Grid>
+            </Border>
+        </Grid>
+    </Border>
+</Window>

src/AxCopilot/Views/ClipboardImagePreviewWindow.xaml.cs

@@ -0,0 +1,231 @@
+using System.IO;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media.Imaging;
+using AxCopilot.Services;
+using Microsoft.Win32;
+
+namespace AxCopilot.Views;
+
+/// <summary>
+/// Phase L2-3: 클립보드 이미지 미리보기 창.
+/// 원본 해상도 이미지 표시 + 확대/축소 + 클립보드 복사 + 파일 저장.
+/// Shift+Enter (이미지 항목 선택 시) 또는 런처 내 미리보기 액션으로 열립니다.
+/// </summary>
+public partial class ClipboardImagePreviewWindow : Window
+{
+    private readonly ClipboardEntry _entry;
+    private BitmapSource? _fullImage;
+    private double _zoomFactor = 1.0;
+
+    private const double ZoomStep = 0.25;
+    private const double MinZoom  = 0.05;
+    private const double MaxZoom  = 8.0;
+
+    public ClipboardImagePreviewWindow(ClipboardEntry entry)
+    {
+        InitializeComponent();
+        _entry = entry;
+        KeyDown += OnKeyDown;
+        Loaded  += OnLoaded;
+    }
+
+    // ─── 초기화 ──────────────────────────────────────────────────────────
+
+    private void OnLoaded(object sender, RoutedEventArgs e)
+    {
+        LoadImage();
+    }
+
+    private void LoadImage()
+    {
+        // 원본 해상도 이미지 우선, 없으면 썸네일 폴백
+        _fullImage = ClipboardHistoryService.LoadOriginalImage(_entry.OriginalImagePath)
+                     ?? _entry.Image;
+
+        if (_fullImage == null)
+        {
+            SizeLabel.Text = "(이미지 없음)";
+            return;
+        }
+
+        PreviewImage.Source = _fullImage;
+        SizeLabel.Text = $"{_fullImage.PixelWidth} × {_fullImage.PixelHeight} px";
+
+        // 창 레이아웃이 확정된 후 Fit 적용
+        Dispatcher.InvokeAsync(FitToWindow, System.Windows.Threading.DispatcherPriority.Loaded);
+    }
+
+    // ─── 줌 제어 ─────────────────────────────────────────────────────────
+
+    private void FitToWindow()
+    {
+        if (_fullImage == null) return;
+        var availW = ImageScroll.ActualWidth  - 24;
+        var availH = ImageScroll.ActualHeight - 24;
+        if (availW <= 0 || availH <= 0) return;
+
+        var scaleX = availW / _fullImage.PixelWidth;
+        var scaleY = availH / _fullImage.PixelHeight;
+        _zoomFactor = Math.Min(1.0, Math.Min(scaleX, scaleY));
+        ApplyZoom();
+    }
+
+    private void ApplyZoom()
+    {
+        ZoomTransform.ScaleX = _zoomFactor;
+        ZoomTransform.ScaleY = _zoomFactor;
+        ZoomLabel.Text = $"{_zoomFactor * 100:F0}%";
+    }
+
+    // ─── 타이틀바 ────────────────────────────────────────────────────────
+
+    private void TitleBar_MouseDown(object sender, MouseButtonEventArgs e)
+    {
+        if (e.LeftButton == MouseButtonState.Pressed)
+            DragMove();
+    }
+
+    // ─── 버튼 핸들러 ─────────────────────────────────────────────────────
+
+    private void BtnClose_Click(object sender, MouseButtonEventArgs e) => Close();
+
+    private void BtnZoomIn_Click(object sender, MouseButtonEventArgs e)
+    {
+        _zoomFactor = Math.Min(MaxZoom, Math.Round(_zoomFactor + ZoomStep, 2));
+        ApplyZoom();
+    }
+
+    private void BtnZoomOut_Click(object sender, MouseButtonEventArgs e)
+    {
+        _zoomFactor = Math.Max(MinZoom, Math.Round(_zoomFactor - ZoomStep, 2));
+        ApplyZoom();
+    }
+
+    private void BtnActualSize_Click(object sender, MouseButtonEventArgs e)
+    {
+        _zoomFactor = 1.0;
+        ApplyZoom();
+    }
+
+    private void BtnFitToWindow_Click(object sender, MouseButtonEventArgs e)
+        => FitToWindow();
+
+    private void BtnCopy_Click(object sender, MouseButtonEventArgs e)
+        => CopyToClipboard();
+
+    private void BtnSave_Click(object sender, MouseButtonEventArgs e)
+        => SaveToFile();
+
+    // ─── 스크롤 휠 줌 ────────────────────────────────────────────────────
+
+    private void ImageScroll_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
+    {
+        if ((Keyboard.Modifiers & ModifierKeys.Control) == 0) return;
+        e.Handled = true;
+
+        var delta = e.Delta > 0 ? ZoomStep : -ZoomStep;
+        _zoomFactor = Math.Clamp(Math.Round(_zoomFactor + delta, 2), MinZoom, MaxZoom);
+        ApplyZoom();
+    }
+
+    // ─── 키보드 단축키 ───────────────────────────────────────────────────
+
+    private void OnKeyDown(object sender, KeyEventArgs e)
+    {
+        switch (e.Key)
+        {
+            case Key.Escape:
+                Close();
+                e.Handled = true;
+                break;
+
+            case Key.Add:
+            case Key.OemPlus:
+                _zoomFactor = Math.Min(MaxZoom, Math.Round(_zoomFactor + ZoomStep, 2));
+                ApplyZoom();
+                e.Handled = true;
+                break;
+
+            case Key.Subtract:
+            case Key.OemMinus:
+                _zoomFactor = Math.Max(MinZoom, Math.Round(_zoomFactor - ZoomStep, 2));
+                ApplyZoom();
+                e.Handled = true;
+                break;
+
+            case Key.D0:
+            case Key.NumPad0:
+                _zoomFactor = 1.0;
+                ApplyZoom();
+                e.Handled = true;
+                break;
+
+            case Key.F:
+                FitToWindow();
+                e.Handled = true;
+                break;
+
+            case Key.C when (Keyboard.Modifiers & ModifierKeys.Control) != 0:
+                CopyToClipboard();
+                e.Handled = true;
+                break;
+
+            case Key.S when (Keyboard.Modifiers & ModifierKeys.Control) != 0:
+                SaveToFile();
+                e.Handled = true;
+                break;
+        }
+    }
+
+    // ─── 내부 동작 ───────────────────────────────────────────────────────
+
+    private void CopyToClipboard()
+    {
+        if (_fullImage == null) return;
+        try
+        {
+            Clipboard.SetImage(_fullImage);
+            NotificationCenterService.Show("클립보드", "이미지를 클립보드에 복사했습니다.",
+                NotificationType.Success);
+        }
+        catch (Exception ex)
+        {
+            NotificationCenterService.Show("복사 실패", ex.Message, NotificationType.Error);
+        }
+    }
+
+    private void SaveToFile()
+    {
+        if (_fullImage == null) return;
+
+        var dlg = new SaveFileDialog
+        {
+            Title      = "이미지 저장",
+            Filter     = "PNG 이미지 (*.png)|*.png|JPEG 이미지 (*.jpg)|*.jpg|BMP 이미지 (*.bmp)|*.bmp",
+            FileName   = $"clipboard_{DateTime.Now:yyyyMMdd_HHmmss}",
+            DefaultExt = "png",
+        };
+        if (dlg.ShowDialog(this) != true) return;
+
+        try
+        {
+            BitmapEncoder encoder = Path.GetExtension(dlg.FileName).ToLowerInvariant() switch
+            {
+                ".jpg" or ".jpeg" => new JpegBitmapEncoder { QualityLevel = 95 },
+                ".bmp"            => new BmpBitmapEncoder(),
+                _                 => new PngBitmapEncoder(),
+            };
+            encoder.Frames.Add(BitmapFrame.Create(_fullImage));
+            using var fs = File.OpenWrite(dlg.FileName);
+            encoder.Save(fs);
+
+            NotificationCenterService.Show("저장 완료", Path.GetFileName(dlg.FileName),
+                NotificationType.Success);
+        }
+        catch (Exception ex)
+        {
+            NotificationCenterService.Show("저장 실패", ex.Message, NotificationType.Error);
+        }
+    }
+}

src/AxCopilot/Views/LauncherWindow.Keyboard.cs

@@ -50,6 +50,16 @@ public partial class LauncherWindow
 
                 if (shift)
                 {
+                    // Phase L2-3: 클립보드 이미지 항목 → 이미지 미리보기 창 열기
+                    if (_vm.SelectedItem?.Data is AxCopilot.Services.ClipboardEntry imgEntry && !imgEntry.IsText)
+                    {
+                        e.Handled = true;
+                        Hide();
+                        var previewWin = new ClipboardImagePreviewWindow(imgEntry);
+                        previewWin.Show();
+                        break;
+                    }
+
                     // 퍼지 파일 검색 결과: Shift+Enter → 파일이 있는 폴더 열기
                     if (_vm.SelectedItem?.Data is AxCopilot.Services.IndexEntry shiftEntry)
                     {

src/AxCopilot/Views/LauncherWindow.ShortcutHelp.cs

@@ -41,7 +41,7 @@ public partial class LauncherWindow
             "Ctrl+Shift+E   탐색기에서 열기",
             "Ctrl+Enter     관리자 실행",
             "Alt+Enter      속성 보기",
-            "Shift+Enter    대형 텍스트",
+            "Shift+Enter    대형 텍스트 / 이미지 미리보기 (#)",
         };
 
         CustomMessageBox.Show(