Make Font Size configurable

CPAP-Exporter.UI/MainWindow.xaml.cs

@@ -1,6 +1,5 @@
 using System.ComponentModel;
 using System.Windows;
-using System.Windows.Data;
 
 namespace CascadePass.CPAPExporter
 {
@@ -20,9 +19,12 @@ public MainWindow()
 
             this.PageViewer.DataContext = navigationViewModel;
 
-            navigationViewModel.PropertyChanged += NavigationViewModel_PropertyChanged;
-
             this.SetWindowSizeAndLocation();
+
+            if(this.userSettings.FontSize > 0 && this.userSettings.FontSize < 49)
+            {
+                this.FontSize = this.userSettings.FontSize;
+            }
         }
 
         private void SetWindowSizeAndLocation()
@@ -51,18 +53,5 @@ protected override void OnClosing(CancelEventArgs e)
             this.GetWindowSizeAndLocation();
             this.userSettings.Save();
         }
-
-        private void NavigationViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
-        {
-            //if (string.Equals(e.PropertyName, nameof(NavigationViewModel.CurrentView)))
-            //{
-            //}
-
-            //if (string.Equals(e.PropertyName, nameof(PageViewModel.IsBusy)))
-            //{
-            //    var bannerStripBinding = BindingOperations.GetBindingExpression(this.BannerStrip, VisibilityProperty);
-            //    bannerStripBinding?.UpdateTarget();
-            //}
-        }
     }
 }

CPAP-Exporter.UI/Pages/Settings/FontSizeView.xaml

@@ -40,10 +40,17 @@
                     Margin="4,0,0,0" />
             </Grid>
         </Expander.Header>
-        <StackPanel>
-            <TextBlock Text="{x:Static local:Resources.Label_FlowReductionExplaination}" TextWrapping="Wrap" />
+        <StackPanel Background="{DynamicResource Legibility.Background}">
+            <TextBlock
+                Text="{x:Static local:Resources.Settings_FontSize}"
+                Margin="8"
+                TextWrapping="Wrap" />
 
-            <Slider />
+            <Slider
+                Minimum="6"
+                Maximum="48"
+                Margin="8"
+                Value="{Binding FontSize}" />
         </StackPanel>
     </Expander>
 </UserControl>

CPAP-Exporter.UI/Pages/Settings/SettingsViewModel.cs

@@ -1,4 +1,5 @@
 using System.Collections.ObjectModel;
+using System.Windows;
 
 namespace CascadePass.CPAPExporter
 {
@@ -11,6 +12,24 @@ public SettingsViewModel() : base(Resources.PageTitle_Settings, Resources.PageDe
 
         public ObservableCollection<Acknowledgement> Acknowledgements { get; private set; }
 
+        public double FontSize
+        {
+            get => this.ExportParameters.UserPreferences.FontSize;
+            set
+            {
+                if (this.ExportParameters.UserPreferences.FontSize != value)
+                {
+                    if (Application.Current?.MainWindow is not null)
+                    {
+                        Application.Current.MainWindow.FontSize = value;
+                    }
+
+                    this.ExportParameters.UserPreferences.FontSize = value;
+                    this.OnPropertyChanged(nameof(this.FontSize));
+                }
+            }
+        }
+
         private void CreateAcknowledgements()
         {
             this.Acknowledgements = [

CPAP-Exporter.UI/Resources.resx

@@ -375,4 +375,7 @@
   <data name="SectionSubtitle_Acknowledgements" xml:space="preserve">
     <value>Open source projects CPAP-Exporter relies on</value>
   </data>
+  <data name="Settings_FontSize" xml:space="preserve">
+    <value>Adjust the text size to what feels most comfortable for you. This setting affects how large the words appear throughout the app, and your preference will be remembered each time you return.</value>
+  </data>
 </root>

CPAP-Exporter.UI/ViewModels/NavigationViewModel.cs

@@ -325,8 +325,10 @@ public void ShowSettings()
         {
             if (this.CurrentView is not SettingsView settingsView)
             {
-                //var viewModel = new SettingsViewModel(this.ExportParameters.UserPreferences);
-                settingsView = new SettingsView() /*{ DataContext = viewModel }*/;
+                settingsView = new SettingsView();
+                var viewModel = (SettingsViewModel)settingsView.DataContext;
+
+                viewModel.ExportParameters = this.ExportParameters;
             }
 
             this.CurrentView = settingsView;