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Add initial Composition based AttachedDropShadow support
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16 files changed

+561
-42
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16 files changed

+561
-42
lines changed

‎Microsoft.Toolkit.Uwp.SampleApp/Microsoft.Toolkit.Uwp.SampleApp.csproj‎

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<Compile Include="SamplePages\MetadataControl\MetadataControlPage.xaml.cs">
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<DependentUpon>MetadataControlPage.xaml</DependentUpon>
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</Compile>
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<Compile Include="SamplePages\Shadows\AttachedDropShadowPage.xaml.cs">
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<DependentUpon>AttachedDropShadowPage.xaml</DependentUpon>
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</Compile>
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<Compile Include="SamplePages\TilesBrush\TilesBrushPage.xaml.cs">
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<DependentUpon>TilesBrushPage.xaml</DependentUpon>
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</Compile>
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<SubType>Designer</SubType>
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</Content>
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<Content Include="SamplePages\Shadows\AttachedShadowWin2DXaml.bind" />
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<Content Include="SamplePages\Shadows\AttachedShadowCompositionXaml.bind" />
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<Content Include="SamplePages\KeyDownTriggerBehavior\KeyDownTriggerBehaviorXaml.bind" />
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</ItemGroup>
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<ItemGroup>
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<Content Include="SamplePages\Primitives\SwitchPresenter.bind">
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<SubType>Designer</SubType>
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</Content>
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<Page Include="SamplePages\Shadows\AttachedDropShadowPage.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</Page>
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<Page Include="SamplePages\TilesBrush\TilesBrushPage.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>

‎Microsoft.Toolkit.Uwp.SampleApp/Models/Samples.cs‎

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@@ -60,7 +60,8 @@ public static async Task<List<SampleCategory>> GetCategoriesAsync()
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{
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allCategories = await JsonSerializer.DeserializeAsync<List<SampleCategory>>(jsonStream.AsStream(), new JsonSerializerOptions
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{
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ReadCommentHandling = JsonCommentHandling.Skip
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ReadCommentHandling = JsonCommentHandling.Skip,
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AllowTrailingCommas = true,
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});
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}
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‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Shadows/AttachedDropShadowPage.xaml‎

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<Page x:Class="Microsoft.Toolkit.Uwp.SampleApp.SamplePages.AttachedDropShadowPage"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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mc:Ignorable="d">
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<!-- Shallow Copy in XamlOnlyPage -->
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</Page>

‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Shadows/AttachedDropShadowPage.xaml.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using Microsoft.Toolkit.Uwp.UI;
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using Windows.UI.Xaml;
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namespace Microsoft.Toolkit.Uwp.SampleApp.SamplePages
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{
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public sealed partial class AttachedDropShadowPage : IXamlRenderListener
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{
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public AttachedDropShadowPage()
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{
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InitializeComponent();
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}
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public void OnXamlRendered(FrameworkElement control)
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{
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// This is done as we don't have x:Bind in live xaml, so we find and attach after.
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var castToTarget = control.FindChild("ShadowTarget");
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if (castToTarget != null)
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{
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if (control.Resources.TryGetValue("CommonShadow", out var resource) && resource is AttachedDropShadow shadow)
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{
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shadow.CastTo = castToTarget;
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}
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}
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}
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}
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}

‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Shadows/AttachedShadowCompositionXaml.bind‎

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<Page
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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xmlns:ui="using:Microsoft.Toolkit.Uwp.UI"
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mc:Ignorable="d">
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<!-- TODO: Animation-->
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<Page.Resources>
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<ui:AttachedDropShadow x:Key="CommonShadow" Offset="4"/><!-- CastTo="{x:Bind ShadowTarget}"/>-->
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<Style TargetType="Button" BasedOn="{StaticResource DefaultButtonStyle}">
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<Setter Property="ui:Effects.Shadow" Value="{StaticResource CommonShadow}"/>
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<Setter Property="HorizontalAlignment" Value="Center"/>
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<!-- We set a solid color for the background button otherwise the shadow bleeds through as
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the new style is transparent. See AttachedCardShadow for proper element clipping. -->
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<Setter Property="Background" Value="Red"/>
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</Style>
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</Page.Resources>
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<ScrollViewer>
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<Grid>
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<!-- The ShadowTarget Grid here is a *sibling* element behind where our elements which will cast
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shadows are located, this is important as otherwise if we used a parent element the
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shadows would appear on top of our elements instead!
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It is also placed within the ScrollViewer here so shadows move with their elements. -->
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<Grid x:Name="ShadowTarget"/>
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<StackPanel Spacing="32" VerticalAlignment="Center">
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<!-- All buttons on this page have the shadow from the common style!
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The Shadow definition is Shared! -->
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<Button Content="I Have a Shadow!"/>
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<!-- Can apply the same shadow to any type of element! -->
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<Image ui:Effects.Shadow="{StaticResource CommonShadow}"
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Height="100" Width="100"
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Source="ms-appx:///Assets/Photos/Owl.jpg"/>
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<!-- You can still apply a Shadow directly and even use binding with it to manipulate at runtime! -->
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<Rectangle RadiusX="32" RadiusY="32"
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Height="100" Width="100"
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Stroke="Blue" StrokeThickness="1">
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<Rectangle.Fill>
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<ImageBrush ImageSource="ms-appx:///Assets/Photos/Owl.jpg"/>
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</Rectangle.Fill>
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<ui:Effects.Shadow>
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<ui:AttachedDropShadow BlurRadius="@[BlurRadius:DoubleSlider:8.0:0.0-10.0]"
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CornerRadius="32"
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Color="@[Color:Brush:Black]"
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Offset="@[Offset:Vector3:4,4]"
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Opacity="@[Opacity:DoubleSlider:1.0:0.0-1.0]"
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CastTo="{Binding ElementName=ShadowTarget}"/>
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</ui:Effects.Shadow>
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</Rectangle>
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<!-- This particular scenario of attaching directly to a raw element is easier than the Win2D equivelent. -->
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<Border Height="100" Width="100"
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CornerRadius="32"
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BorderBrush="White" BorderThickness="1">
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<Border.Background>
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<ImageBrush ImageSource="ms-appx:///Assets/Photos/Owl.jpg"/>
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</Border.Background>
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<ui:Effects.Shadow>
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<ui:AttachedDropShadow CornerRadius="32"
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Offset="4,4"
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CastTo="{Binding ElementName=ShadowTarget}"/>
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</ui:Effects.Shadow>
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</Border>
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<!-- Note how even though this element is transparent, the shadow still shows through,
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to have this not occur use the AttachedCardShadow. -->
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<Rectangle ui:Effects.Shadow="{StaticResource CommonShadow}"
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Fill="#80FF0000"
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RadiusX="4" RadiusY="4"
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Width="200" Height="100"/>
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<!-- This is the same behavior as the old DropShadowPanel where the shadow bleeds through and
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the Shadow opacity is tied to the Rectangle itself -->
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<controls:DropShadowPanel xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
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OffsetX="4" OffsetY="4"
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BlurRadius="12"
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HorizontalAlignment="Center">
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<Rectangle Fill="#80FF0000"
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RadiusX="4" RadiusY="4"
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Width="200" Height="100"/>
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</controls:DropShadowPanel>
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<Button Content="I Also have a Shadow!"/>
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</StackPanel>
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</Grid>
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</ScrollViewer>
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</Page>

‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/Shadows/AttachedShadowWin2DXaml.bind‎

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@@ -51,8 +51,9 @@
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</Border.Background>
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</Border>
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<!-- We need to put the Shadow on a parent element here as otherwise the
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rounding of the border of the image above clips the shadow itself -->
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<!-- TODO: This specific scenario should be simpler in the Composition based one? -->
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rounding of the border of the image above clips the shadow itself.
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This is easier to perform with the Composition only based shadow as the
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Shadow is projected to another element. -->
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<ui:Effects.Shadow>
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<media:AttachedCardShadow CornerRadius="32"
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Offset="4,4"/>

‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/XamlOnlyPage.xaml‎

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</controls:SwitchPresenter>
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<controls:ConstrainedBox x:Key="ConstrainedBoxControl" />
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<media:AttachedCardShadow x:Key="AttachedShadow" />
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<ui:AttachedDropShadow x:Key="AttachedDropShadow" />
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<controls:DropShadowPanel x:Key="DropShadowPanel"
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ui:Effects.Shadow="{StaticResource AttachedShadow}" />
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</Page.Resources>

‎Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json‎

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@@ -186,9 +186,19 @@
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"DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/controls/GridSplitter.md"
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},
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{
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"Name": "AttachedDropShadow (Win2D)",
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"Name": "AttachedDropShadow (Composition)",
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"Type": "AttachedDropShadowPage",
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"Subcategory": "Media",
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"About": "An AttachedDropShadow allows the creation of a DropShadow for any Xaml FrameworkElement in markup.",
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"CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI/Shadows",
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"XamlCodeFile": "/SamplePages/Shadows/AttachedShadowCompositionXaml.bind",
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"Icon": "/SamplePages/Shadows/DropShadowPanel.png",
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"DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/controls/DropShadowPanel.md"
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},
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{
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"Name": "AttachedCardShadow (Win2D)",
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"Subcategory": "Media",
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"About": "An AttachedCardShadow allows the creation of a DropShadow for any Xaml FrameworkElement in markup.",
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"CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Media/Shadows",
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"XamlCodeFile": "/SamplePages/Shadows/AttachedShadowWin2DXaml.bind",
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"Icon": "/SamplePages/Shadows/DropShadowPanel.png",
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"Name": "DropShadowPanel",
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"Subcategory": "Media",
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"About": "DropShadowPanel contol allows the creation of a DropShadow for any Xaml FrameworkElement in markup.",
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"BadgeUpdateVersionRequired": "DEPRECATED",
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"DeprecatedWarning": "This control will be removed in a future major release. Please use the AttachedDropShadow or AttachedCardShadow extensions instead.",
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"CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Controls.Core/DropShadowPanel",
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"XamlCodeFile": "/SamplePages/Shadows/DropShadowPanelXaml.bind",
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"Icon": "/SamplePages/Shadows/DropShadowPanel.png",

‎Microsoft.Toolkit.Uwp.UI.Controls.Core/DropShadowPanel/DropShadowPanel.cs‎

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@@ -171,7 +171,14 @@ private void UpdateShadowMask()
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// alpha mask even if Content happens to extend any of the other classes
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if (Content is IAlphaMaskProvider maskedControl)
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{
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mask = maskedControl.GetAlphaMask();
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if (maskedControl.WaitUntilLoaded && maskedControl is FrameworkElement element && !element.IsLoaded)
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{
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element.Loaded += CustomMaskedElement_Loaded;
177+
}
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else
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{
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mask = maskedControl.GetAlphaMask();
181+
}
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}
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else if (Content is Image)
177184
{
@@ -185,17 +192,6 @@ private void UpdateShadowMask()
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{
186193
mask = ((TextBlock)Content).GetAlphaMask();
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}
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else if (Content is ImageExBase imageExBase)
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{
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imageExBase.ImageExInitialized += ImageExInitialized;
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if (imageExBase.IsInitialized)
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{
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imageExBase.ImageExInitialized -= ImageExInitialized;
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mask = ((ImageExBase)Content).GetAlphaMask();
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}
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}
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_dropShadow.Mask = mask;
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}
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}
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}
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private void ImageExInitialized(object sender, EventArgs e)
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private void CustomMaskedElement_Loaded(object sender, RoutedEventArgs e)
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{
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var imageExBase = (ImageExBase)Content;
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imageExBase.ImageExInitialized -= ImageExInitialized;
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CompositionBrush mask = ((ImageExBase)Content).GetAlphaMask();
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if (sender is FrameworkElement element)
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{
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element.Loaded -= CustomMaskedElement_Loaded;
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_dropShadow.Mask = mask;
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_dropShadow.Mask = ((IAlphaMaskProvider)element).GetAlphaMask();
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}
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}
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private void UpdateShadowOffset(float x, float y, float z)

‎Microsoft.Toolkit.Uwp.UI.Controls.Core/ImageEx/ImageExBase.cs‎

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[TemplateVisualState(Name = UnloadedState, GroupName = CommonGroup)]
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[TemplateVisualState(Name = FailedState, GroupName = CommonGroup)]
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[TemplatePart(Name = PartImage, Type = typeof(object))]
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public abstract partial class ImageExBase : Control
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public abstract partial class ImageExBase : Control, IAlphaMaskProvider
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{
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private bool _isInViewport;
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/// </summary>
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protected object Image { get; private set; }
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/// <inheritdoc/>
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public bool WaitUntilLoaded => true;
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/// <summary>
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/// Initializes a new instance of the <see cref="ImageExBase"/> class.
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/// </summary>

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