Migrate image sector viewer from Eto.Forms to Avalonia.

Aaru.Gui/ViewModels/ViewSectorViewModel.cs

@@ -0,0 +1,71 @@
+using Aaru.CommonTypes.Interfaces;
+using ReactiveUI;
+
+namespace Aaru.Gui.ViewModels
+{
+    public class ViewSectorViewModel : ViewModelBase
+    {
+        const    int         HEX_COLUMNS = 32;
+        readonly IMediaImage inputFormat;
+        bool                 _longSectorChecked;
+        bool                 _longSectorVisible;
+        string               _printHexText;
+        double               _sectorNumber;
+        string               _title;
+        string               _totalSectorsText;
+
+        public ViewSectorViewModel(IMediaImage inputFormat)
+        {
+            this.inputFormat = inputFormat;
+
+            try
+            {
+                inputFormat.ReadSectorLong(0);
+                LongSectorChecked = true;
+            }
+            catch
+            {
+                LongSectorVisible = false;
+            }
+
+            TotalSectorsText = $"of {inputFormat.Info.Sectors}";
+            SectorNumber     = 0;
+        }
+
+        public string Title
+        {
+            get => _title;
+            set => this.RaiseAndSetIfChanged(ref _title, value);
+        }
+
+        public double SectorNumber
+        {
+            get => _sectorNumber;
+            set
+            {
+                this.RaiseAndSetIfChanged(ref _sectorNumber, value);
+
+                PrintHexText =
+                    PrintHex.
+                        ByteArrayToHexArrayString(LongSectorChecked ? inputFormat.ReadSectorLong((ulong)SectorNumber) : inputFormat.ReadSector((ulong)SectorNumber),
+                                                  HEX_COLUMNS);
+            }
+        }
+
+        public string TotalSectorsText { get; }
+
+        public bool LongSectorChecked
+        {
+            get => _longSectorChecked;
+            set => this.RaiseAndSetIfChanged(ref _longSectorChecked, value);
+        }
+
+        public bool LongSectorVisible { get; }
+
+        public string PrintHexText
+        {
+            get => _printHexText;
+            set => this.RaiseAndSetIfChanged(ref _printHexText, value);
+        }
+    }
+}