added custom control implementing a rating bar

Author: spiegelp

MainDemo.Wpf/Buttons.xaml

@@ -5,6 +5,7 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:MaterialDesignColors.WpfExample"
              xmlns:wpfExample="clr-namespace:MaterialDesignColors.WpfExample"
+             xmlns:wpf="clr-namespace:MaterialDesignThemes.Wpf;assembly=MaterialDesignThemes.Wpf"
              xmlns:system="clr-namespace:System;assembly=mscorlib"
              mc:Ignorable="d" 
              d:DesignHeight="300" d:DesignWidth="300">
@@ -30,6 +31,8 @@
             <RowDefinition />
             <RowDefinition />
             <RowDefinition />
+            <RowDefinition />
+            <RowDefinition />
         </Grid.RowDefinitions>
         <TextBlock>Buttons</TextBlock>
         <StackPanel Grid.Row="1" Orientation="Horizontal" Margin="0 24 0 0">
@@ -149,5 +152,12 @@
                 </Viewbox>
             </ToggleButton>
         </StackPanel>
+        <TextBlock Margin="0 24 0 0" Grid.Row="9">Rating bar</TextBlock>
+        <StackPanel Grid.Row="10" Margin="0 16 0 0" Orientation="Horizontal">
+            <wpf:RatingBar x:Name="ratingBar" Rating="3" PathData="M12,21.35L10.55,20.03C5.4,15.36 2,12.27 2,8.5C2,5.41 4.42,3 7.5,3C9.24,3 10.91,3.81 12,5.08C13.09,3.81 14.76,3 16.5,3C19.58,3 22,5.41 22,8.5C22,12.27 18.6,15.36 13.45,20.03L12,21.35Z" />
+            <TextBlock Text="Rating: " VerticalAlignment="Center" />
+            <TextBlock x:Name="ratingTextBlock" Text="{Binding Path=Rating, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Center" />
+            <wpf:RatingBar Rating="3" IsEnabled="False" Margin="40,0,0,0" PathData="M12,21.35L10.55,20.03C5.4,15.36 2,12.27 2,8.5C2,5.41 4.42,3 7.5,3C9.24,3 10.91,3.81 12,5.08C13.09,3.81 14.76,3 16.5,3C19.58,3 22,5.41 22,8.5C22,12.27 18.6,15.36 13.45,20.03L12,21.35Z" />
+        </StackPanel>
     </Grid>
 </UserControl>

MainDemo.Wpf/Buttons.xaml.cs

@@ -23,6 +23,8 @@ public partial class Buttons : UserControl
         public Buttons()
         {
             InitializeComponent();
+
+            ratingTextBlock.DataContext = ratingBar;
         }
 
 	    private void ButtonBase_OnClick(object sender, RoutedEventArgs e)

MaterialDesignThemes.Wpf/Converters/NotNullToVisibilityConverter.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace MaterialDesignThemes.Wpf.Converters
+{
+    public class NotNullToVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value != null ? Visibility.Visible : Visibility.Collapsed;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return Binding.DoNothing;
+        }
+    }
+}

MaterialDesignThemes.Wpf/Converters/RatingToBoolConverter.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace MaterialDesignThemes.Wpf.Converters
+{
+    public class RatingToBoolConverter : IValueConverter
+    {
+        public int Rating
+        {
+            get; set;
+        }
+
+        public RatingToBoolConverter() {
+            Rating = 3;
+        }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+            {
+                return false;
+            }
+
+            return ((int)value) >= Rating;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return Binding.DoNothing;
+        }
+    }
+}

MaterialDesignThemes.Wpf/MaterialDesignThemes.Wpf.csproj

@@ -64,6 +64,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="RatingBar.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="Themes\Generic.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
@@ -203,7 +207,9 @@
     <Compile Include="Converters\ClockItemIsCheckedConverter.cs" />
     <Compile Include="Converters\ClockLineConverter.cs" />
     <Compile Include="Converters\NotConverter.cs" />
+    <Compile Include="Converters\NotNullToVisibilityConverter.cs" />
     <Compile Include="Converters\NotZeroToVisibilityConverter.cs" />
+    <Compile Include="Converters\RatingToBoolConverter.cs" />
     <Compile Include="Converters\SizeToRectConverter.cs" />
     <Compile Include="CustomPopupPlacementCallbackHelper.cs" />
     <Compile Include="DataGridAssist.cs" />
@@ -231,6 +237,9 @@
       <DependentUpon>Settings.settings</DependentUpon>
       <DesignTimeSharedInput>True</DesignTimeSharedInput>
     </Compile>
+    <Compile Include="RatingBar.xaml.cs">
+      <DependentUpon>RatingBar.xaml</DependentUpon>
+    </Compile>
     <Compile Include="TextFieldAssist.cs" />
     <Compile Include="Converters\TextFieldHintVisibilityConverter.cs" />
     <Compile Include="TimePicker.cs" />