[feat:] pdf export options (working)

CorrectionViewModel.cs

@@ -0,0 +1,81 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace PLG_Exam.ViewModels;
+
+public class ExportOptionsViewModel : INotifyPropertyChanged
+{
+    private bool hasCorrectionLines = false;
+    private int correctionMargin = 50;
+    private double lineSpacing= 1.5;
+    private string textPosition="left";
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    protected void OnPropertyChanged([CallerMemberName] string? name = null) =>
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+
+    // ToggleSwitch
+    public bool HasCorrectionLines
+    {
+        get => hasCorrectionLines;
+        set { hasCorrectionLines = value; OnPropertyChanged(); }
+    }
+
+    // Korrekturrand – RadioButtons mapped auf int
+    public bool IsCorrectionMarginHalf
+    {
+        get => correctionMargin == 100;
+        set { if (value) { correctionMargin = 100; OnPropertyChanged(); } }
+    }
+
+    public bool IsCorrectionMarginQuarter
+    {
+        get => correctionMargin == 50;
+        set { if (value) { correctionMargin = 50; OnPropertyChanged(); } }
+    }
+
+    public bool IsCorrectionMarginNone
+    {
+        get => correctionMargin == 0;
+        set { if (value) { correctionMargin = 0; OnPropertyChanged(); } }
+    }
+
+    // Zeilenabstand
+    public bool IsLineSpacing1
+    {
+        get => lineSpacing == 1.0;
+        set { if (value) { lineSpacing = 1.0; OnPropertyChanged(); } }
+    }
+
+    public bool IsLineSpacing15
+    {
+        get => lineSpacing == 1.5;
+        set { if (value) { lineSpacing = 1.5; OnPropertyChanged(); } }
+    }
+
+    public bool IsLineSpacing2
+    {
+        get => lineSpacing == 2.0;
+        set { if (value) { lineSpacing = 2.0; OnPropertyChanged(); } }
+    }
+
+    // Textposition
+    public bool IsTextLeft
+    {
+        get => textPosition == "left";
+        set { if (value) { textPosition = "left"; OnPropertyChanged(); } }
+    }
+
+    public bool IsTextRight
+    {
+        get => textPosition == "right";
+        set { if (value) { textPosition = "right"; OnPropertyChanged(); } }
+    }
+
+    // Optional: Getter für externe Verwendung
+    public int CorrectionMargin => correctionMargin;
+    public double LineSpacing => lineSpacing;
+    public string TextPosition => textPosition;
+}