Initial commit to new repository

src/AxCopilot/Views/EyeDropperWindow.xaml.cs

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+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+
+namespace AxCopilot.Views;
+
+/// <summary>
+/// 전체 화면 스포이드 모드. 마우스를 따라다니는 돋보기와 HEX 코드를 표시하고,
+/// 클릭 시 해당 픽셀 색상을 캡처하여 ColorPickResultWindow를 표시합니다.
+/// </summary>
+public partial class EyeDropperWindow : Window
+{
+    [DllImport("user32.dll")]
+    private static extern bool GetCursorPos(out POINT lpPoint);
+
+    [DllImport("gdi32.dll")]
+    private static extern uint GetPixel(IntPtr hdc, int x, int y);
+
+    [DllImport("user32.dll")]
+    private static extern IntPtr GetDC(IntPtr hWnd);
+
+    [DllImport("user32.dll")]
+    private static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct POINT { public int X, Y; }
+
+    /// <summary>클릭으로 선택된 색상. null이면 취소.</summary>
+    public System.Drawing.Color? PickedColor { get; private set; }
+    public double PickX { get; private set; }
+    public double PickY { get; private set; }
+
+    private readonly System.Drawing.Rectangle _screenBounds;
+
+    public EyeDropperWindow()
+    {
+        InitializeComponent();
+
+        // 전체 모니터 영역
+        _screenBounds = GetAllScreenBounds();
+        Left   = _screenBounds.X;
+        Top    = _screenBounds.Y;
+        Width  = _screenBounds.Width;
+        Height = _screenBounds.Height;
+
+        Loaded += (_, _) =>
+        {
+            Magnifier.Visibility = Visibility.Visible;
+            HexLabel.Visibility  = Visibility.Visible;
+        };
+    }
+
+    private void Window_MouseMove(object sender, MouseEventArgs e)
+    {
+        var pos = e.GetPosition(RootCanvas);
+        var color = GetScreenPixelColor();
+
+        // 돋보기 위치 (커서 오른쪽 위)
+        Canvas.SetLeft(Magnifier, pos.X + 16);
+        Canvas.SetTop(Magnifier, pos.Y - 100);
+
+        // HEX 레이블 위치
+        Canvas.SetLeft(HexLabel, pos.X + 16);
+        Canvas.SetTop(HexLabel, pos.Y - 10);
+
+        // 돋보기 색상 미리보기
+        var wpfColor = System.Windows.Media.Color.FromRgb(color.R, color.G, color.B);
+        MagPreview.Fill = new SolidColorBrush(wpfColor);
+        HexLabelText.Text = $"#{color.R:X2}{color.G:X2}{color.B:X2}";
+    }
+
+    private void Window_MouseDown(object sender, MouseButtonEventArgs e)
+    {
+        if (e.ChangedButton == MouseButton.Left)
+        {
+            PickedColor = GetScreenPixelColor();
+            GetCursorPos(out var pt);
+            PickX = pt.X;
+            PickY = pt.Y;
+            Close();
+        }
+        else if (e.ChangedButton == MouseButton.Right)
+        {
+            PickedColor = null;
+            Close();
+        }
+    }
+
+    private void Window_KeyDown(object sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Escape)
+        {
+            PickedColor = null;
+            Close();
+        }
+    }
+
+    private static System.Drawing.Color GetScreenPixelColor()
+    {
+        GetCursorPos(out var pt);
+        var hdc = GetDC(IntPtr.Zero);
+        try
+        {
+            uint pixel = GetPixel(hdc, pt.X, pt.Y);
+            int r = (int)(pixel & 0xFF);
+            int g = (int)((pixel >> 8) & 0xFF);
+            int b = (int)((pixel >> 16) & 0xFF);
+            return System.Drawing.Color.FromArgb(r, g, b);
+        }
+        finally
+        {
+            ReleaseDC(IntPtr.Zero, hdc);
+        }
+    }
+
+    private static System.Drawing.Rectangle GetAllScreenBounds()
+    {
+        int left = 0, top = 0, right = 0, bottom = 0;
+        foreach (var screen in System.Windows.Forms.Screen.AllScreens)
+        {
+            var b = screen.Bounds;
+            left   = Math.Min(left, b.Left);
+            top    = Math.Min(top, b.Top);
+            right  = Math.Max(right, b.Right);
+            bottom = Math.Max(bottom, b.Bottom);
+        }
+        return new System.Drawing.Rectangle(left, top, right - left, bottom - top);
+    }
+}