Make region selector shower instead of whole screen )

src/Eve-O-Preview/View/Implementation/RegionPickerDialog.cs

@@ -0,0 +1,136 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+
+namespace EveOPreview.View.Implementation {
+    public partial class RegionPickerDialog : Form {
+        private Point _startPoint;
+        private Point _endPoint;
+        private bool _isDrawing;
+        private Rectangle _selectedRegion;
+
+        public Rectangle SelectedRegion => _selectedRegion;
+
+        public RegionPickerDialog() {
+            InitializeComponent();
+            InitializeDialog();
+        }
+
+        private void InitializeDialog() {
+            // Make the form cover all screens
+            Rectangle totalBounds = GetTotalScreenBounds();
+            this.Bounds = totalBounds;
+            this.StartPosition = FormStartPosition.Manual;
+            this.FormBorderStyle = FormBorderStyle.None;
+            this.WindowState = FormWindowState.Maximized;
+            this.TopMost = true;
+            this.ShowInTaskbar = false;
+            this.Cursor = Cursors.Cross;
+
+            // Make the form semi-transparent but not fully transparent
+            this.BackColor = Color.Black;
+            this.Opacity = 0.3;
+
+            // Add event handlers
+            this.MouseDown += RegionPickerDialog_MouseDown;
+            this.MouseMove += RegionPickerDialog_MouseMove;
+            this.MouseUp += RegionPickerDialog_MouseUp;
+            this.KeyDown += RegionPickerDialog_KeyDown;
+            this.Paint += RegionPickerDialog_Paint;
+
+            // Add instructions label
+            var instructionsLabel = new Label { Text = "Click and drag to select a region. Press ESC to cancel.",
+                                                ForeColor = Color.White,
+                                                BackColor = Color.Black,
+                                                Font = new Font("Arial", 12, FontStyle.Bold),
+                                                AutoSize = true,
+                                                Location = new Point(10, 10) };
+            this.Controls.Add(instructionsLabel);
+        }
+
+        private Rectangle GetTotalScreenBounds() {
+            Rectangle bounds = Screen.PrimaryScreen.Bounds;
+            foreach (Screen screen in Screen.AllScreens) {
+                bounds = Rectangle.Union(bounds, screen.Bounds);
+            }
+            return bounds;
+        }
+
+        private void RegionPickerDialog_MouseDown(object sender, MouseEventArgs e) {
+            if (e.Button == MouseButtons.Left) {
+                _startPoint = e.Location;
+                _isDrawing = true;
+                this.Capture = true;
+                this.Invalidate();
+            }
+        }
+
+        private void RegionPickerDialog_MouseMove(object sender, MouseEventArgs e) {
+            if (_isDrawing) {
+                _endPoint = e.Location;
+                this.Invalidate();
+            }
+        }
+
+        private void RegionPickerDialog_MouseUp(object sender, MouseEventArgs e) {
+            if (e.Button == MouseButtons.Left && _isDrawing) {
+                _isDrawing = false;
+                _endPoint = e.Location;
+                this.Capture = false;
+
+                // Calculate the selected region
+                int x = Math.Min(_startPoint.X, _endPoint.X);
+                int y = Math.Min(_startPoint.Y, _endPoint.Y);
+                int width = Math.Abs(_endPoint.X - _startPoint.X);
+                int height = Math.Abs(_endPoint.Y - _startPoint.Y);
+
+                if (width > 10 && height > 10)  // Minimum size
+                {
+                    _selectedRegion = new Rectangle(x, y, width, height);
+                    this.DialogResult = DialogResult.OK;
+                    this.Close();
+                } else {
+                    // Reset if region is too small
+                    _startPoint = Point.Empty;
+                    _endPoint = Point.Empty;
+                    this.Invalidate();
+                }
+            }
+        }
+
+        private void RegionPickerDialog_KeyDown(object sender, KeyEventArgs e) {
+            if (e.KeyCode == Keys.Escape) {
+                this.DialogResult = DialogResult.Cancel;
+                this.Close();
+            }
+        }
+
+        private void RegionPickerDialog_Paint(object sender, PaintEventArgs e) {
+            if (_isDrawing) {
+                // Draw selection rectangle
+                using (Pen pen = new Pen(Color.Red, 2)) {
+                    pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
+
+                    int x = Math.Min(_startPoint.X, _endPoint.X);
+                    int y = Math.Min(_startPoint.Y, _endPoint.Y);
+                    int width = Math.Abs(_endPoint.X - _startPoint.X);
+                    int height = Math.Abs(_endPoint.Y - _startPoint.Y);
+
+                    e.Graphics.DrawRectangle(pen, x, y, width, height);
+                }
+
+                // Draw size information
+                if (_startPoint != Point.Empty && _endPoint != Point.Empty) {
+                    int width = Math.Abs(_endPoint.X - _startPoint.X);
+                    int height = Math.Abs(_endPoint.Y - _startPoint.Y);
+
+                    string sizeText = $"{width} x {height}";
+                    using (Font font = new Font("Arial", 10, FontStyle.Bold)) using (Brush brush =
+                                                                                         new SolidBrush(Color.White)) {
+                        e.Graphics.DrawString(sizeText, font, brush, _endPoint.X + 5, _endPoint.Y + 5);
+                    }
+                }
+            }
+        }
+    }
+}