feat(converters): add DivisionMathConverter and update bindings

- Introduced `DivisionMathConverter` for division operations in data binding.
- Updated `MainWindow.xaml`, `PageNavigationView.xaml`, and `ToolBarView.xaml` to use the new `BoolToVisibilityConverter`.
- Replaced old visibility converter references to ensure consistency across the application.

SketchNow/Converters/DivisionMathConverter.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace SketchNow.Converters
+{
+    public class DivisionMathConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null || parameter == null)
+                return null;
+
+            double number;
+            double divisor;
+
+            if (double.TryParse(value.ToString(), out number) && double.TryParse(parameter.ToString(), out divisor))
+            {
+                return number / divisor;
+            }
+
+            return null;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

SketchNow/Views/MainWindow.xaml

@@ -9,7 +9,7 @@
         xmlns:properties="clr-namespace:SketchNow.Properties"
         xmlns:system="clr-namespace:System;assembly=System.Runtime"
         xmlns:views="clr-namespace:SketchNow.Views"
-        xmlns:vms="clr-namespace:SketchNow.ViewModels"
+        xmlns:vms="clr-namespace:SketchNow.ViewModels" xmlns:valueConverters="http://schemas.superdev.ch/valueconverters/2016/xaml"
         Title="SketchNow"
         Width="800"
         Height="450"
@@ -76,8 +76,11 @@
   <Window.Style>
     <StaticResource ResourceKey="MaterialDesignWindow" />
   </Window.Style>
+  <Window.Resources>
+    <valueConverters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
+  </Window.Resources>
   <Grid>
-    <Canvas Background="{Binding SelectedBrush}" Visibility="{Binding IsMultiPageMode, Converter={StaticResource BooleanToVisibilityConverter}}" />
+    <Canvas Background="{Binding SelectedBrush}" Visibility="{Binding IsMultiPageMode, Converter={StaticResource BoolToVisibilityConverter}}" />
     <controls:CustomInkCanvas Background="Transparent"
                               Cursor="{Binding InkCanvasCursor}"
                               DefaultDrawingAttributes="{Binding CurrentDrawingAttributes}"
@@ -125,7 +128,7 @@
                  Margin="0,0,0,6"
                  VerticalAlignment="Bottom"
                  IsIndeterminate="{Binding Progress.IsIndeterminate}"
-                 Visibility="{Binding Progress.IsVisible, Converter={StaticResource BooleanToVisibilityConverter}}"
+                 Visibility="{Binding Progress.IsVisible, Converter={StaticResource BoolToVisibilityConverter}}"
                  Value="{Binding Progress.Value}" />
   </Grid>
 </Window>

SketchNow/Views/PageNavigationView.xaml

@@ -5,18 +5,22 @@
              xmlns:local="clr-namespace:SketchNow.Views"
              xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:valueConverters="http://schemas.superdev.ch/valueconverters/2016/xaml"
              xmlns:vms="clr-namespace:SketchNow.ViewModels"
              d:DataContext="{d:DesignInstance IsDesignTimeCreatable=False,
                                               Type={x:Type vms:MainWindowViewModel}}"
              d:DesignHeight="300"
              d:DesignWidth="800"
              mc:Ignorable="d">
+  <UserControl.Resources>
+    <valueConverters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
+  </UserControl.Resources>
   <StackPanel Margin="5"
               HorizontalAlignment="Right"
               VerticalAlignment="Bottom"
               Background="#09000000"
               Orientation="Horizontal"
-              Visibility="{Binding IsMultiPageMode, Converter={StaticResource BooleanToVisibilityConverter}}">
+              Visibility="{Binding IsMultiPageMode, Converter={StaticResource BoolToVisibilityConverter}}">
     <Button Height="48"
             Command="{Binding CanvasPages.PreviousCommand}"
             Content="{materialDesign:PackIcon Kind=ArrowLeft}"

SketchNow/Views/ToolBarView.xaml

@@ -9,6 +9,7 @@
              xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:properties="clr-namespace:SketchNow.Properties"
+             xmlns:valueConverters="http://schemas.superdev.ch/valueconverters/2016/xaml"
              xmlns:vms="clr-namespace:SketchNow.ViewModels"
              x:Name="TooBarControl"
              d:DataContext="{d:DesignInstance IsDesignTimeCreatable=False,
@@ -17,8 +18,10 @@
              d:DesignWidth="800"
              mc:Ignorable="d">
   <UserControl.Resources>
+    <valueConverters:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
     <converters:ColorToBrushConverter x:Key="ColorToBrushConverter" />
     <converters:EnumToIndexConverter x:Key="EnumToIndexConverter" />
+    <converters:DivisionMathConverter x:Key="DivisionMathConverter" />
   </UserControl.Resources>
   <jas:DragCanvas>
     <StackPanel Canvas.Left="{Binding (Canvas.Left), ElementName=ToolBar, ConverterParameter=81, Converter={StaticResource MathAddConverter}}"
@@ -91,7 +94,7 @@
                 Canvas.Top="{Binding (Canvas.Top), ConverterParameter=-36, Converter={StaticResource MathAddConverter}, ElementName=ToolBar}"
                 jas:DragCanvas.CanBeDragged="False"
                 Orientation="Horizontal"
-                Visibility="{Binding IsSelected, Converter={StaticResource BooleanToVisibilityConverter}, ElementName=ToolBarPen}">
+                Visibility="{Binding IsSelected, Converter={StaticResource BoolToVisibilityConverter}, ElementName=ToolBarPen}">
       <ListBox x:Name="ColorList"
                Margin="1"
                ItemsSource="{Binding ColorList}"