Support finding nearest TFM to collect assets from

src/SingleProject/Resizetizer/src/nuget/buildTransitive/Microsoft.Maui.Resizetizer.After.targets

@@ -256,25 +256,35 @@
         <CallTarget Targets="GetMauiItems" Condition="'$(ResizetizerIncludeSelfProject)' == 'True'">
             <Output
                 TaskParameter="TargetOutputs"
-                ItemName="ImportedMauiItem" />
+                ItemName="_ImportedMauiItem" />
         </CallTarget>
 
-        <!-- Invoke the GetMauiItems target on all project references -->
-        <!-- This will accumulate images into our MauiImage group -->
-        <!--<MSBuild Targets="GetMauiItems" Projects="@(_MSBuildProjectReferenceExistent)">-->
+        <!-- Invoke the GetMauiItems target on all project references. This will accumulate images into our MauiImage group -->
+        <ItemGroup>
+            <!-- Filter out the items missing the OriginalProjectReferenceItemSpec because this is essential -->
+            <_ResizetizeCollectItemsProjectWithOIS Include="@(_ResolvedProjectReferencePaths->HasMetadata('OriginalProjectReferenceItemSpec'))" />
+            <!-- Convert the Identity from the final assembly path to the ProjectReference -->
+            <_ResizetizeCollectItemsProjectWithItemSpec Include="@(_ResizetizeCollectItemsProjectWithOIS->'%(OriginalProjectReferenceItemSpec)')" />
+            <!-- Add the resolved references if and only if they have NearestTargetFramework defined -->
+            <_ResizetizeCollectItemsProject Include="@(_ResizetizeCollectItemsProjectWithItemSpec->HasMetadata('NearestTargetFramework'))" />
+            <!-- If any resolved paths were missing OriginalProjectReferenceItemSpec or NearestTargetFramework, fall back to the 
+                 previous functionality with using the ProjectReference items and the CURRENT project's TargetFramework -->
+            <_ResizetizeCollectItemsProject Include="@(ProjectReference)" Exclude="@(_ResizetizeCollectItemsProject)" NearestTargetFramework="$(TargetFramework)" />
+        </ItemGroup>
         <MSBuild
             Targets="GetMauiItems"
-            Projects="@(ProjectReference)"
+            Projects="%(_ResizetizeCollectItemsProject.Identity)"
             BuildInParallel="true"
-            Properties="TargetFramework=$(TargetFramework)"
+            Properties="TargetFramework=%(_ResizetizeCollectItemsProject.NearestTargetFramework)"
             SkipNonexistentProjects="true"
             SkipNonexistentTargets="true">
             <Output
                 TaskParameter="TargetOutputs"
-                ItemName="ImportedMauiItem" />
+                ItemName="_ImportedMauiItem" />
         </MSBuild>
 
         <ItemGroup>
+            <ImportedMauiItem Include="@(_ImportedMauiItem)" />
             <MauiImage
                 Include="@(ImportedMauiItem)"
                 Condition="'%(ImportedMauiItem.ItemGroupName)' == 'MauiImage'" />

src/TestUtils/src/Microsoft.Maui.IntegrationTests/ResizetizerTests.cs

@@ -0,0 +1,96 @@
+using Microsoft.Maui.IntegrationTests.Apple;
+
+namespace Microsoft.Maui.IntegrationTests;
+
+public class ResizetizerTests : BaseBuildTest
+{
+	const string BlankSvgContents =
+		"""
+		<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+		<svg width="456" height="456" viewBox="0 0 456 456" version="1.1" xmlns="http://www.w3.org/2000/svg">
+			<rect x="0" y="0" width="456" height="456" fill="#512BD4" />
+		</svg>
+		""";
+
+	[Test]
+	// windows unpackaged/exe
+	[TestCase("maui", "classlib", true)] // net8.0
+	[TestCase("maui", "mauilib", true)] // net8.0-xxx
+	[TestCase("maui-blazor", "classlib", true)] // net8.0
+	[TestCase("maui-blazor", "mauilib", true)] // net8.0-xxx
+	// windows packaged/msix
+	[TestCase("maui", "classlib", false)] // net8.0
+	[TestCase("maui", "mauilib", false)] // net8.0-xxx
+	[TestCase("maui-blazor", "classlib", false)] // net8.0
+	[TestCase("maui-blazor", "mauilib", false)] // net8.0-xxx
+	public void CollectsAssets(string id, string libid, bool unpackaged)
+	{
+		// new app
+		var appDir = Path.Combine(TestDirectory, "theapp");
+		var appFile = Path.Combine(appDir, $"{Path.GetFileName(appDir)}.csproj");
+		Assert.IsTrue(DotnetInternal.New(id, appDir, DotNetCurrent),
+			$"Unable to create template {id}. Check test output for errors.");
+
+		// new lib
+		var libDir = Path.Combine(TestDirectory, "thelib");
+		var libFile = Path.Combine(libDir, $"{Path.GetFileName(libDir)}.csproj");
+		Assert.IsTrue(DotnetInternal.New(libid, libDir, DotNetCurrent),
+			$"Unable to create template {libid}. Check test output for errors.");
+
+		// add a project reference
+		FileUtilities.ReplaceInFile(appFile,
+			"</Project>",
+			"""
+			<ItemGroup>
+				<ProjectReference Include="..\thelib\thelib.csproj" />
+			</ItemGroup>
+			</Project>
+			""");
+
+		// toggle packaged / unpackaged
+		if (unpackaged)
+		{
+			FileUtilities.ReplaceInFile(appFile,
+				"</Project>",
+				"""
+				<PropertyGroup>
+					<WindowsPackageType>None</WindowsPackageType>
+				</PropertyGroup>
+				</Project>
+				""");
+
+		}
+
+		// add the svg file
+		File.WriteAllText(Path.Combine(libDir, "the_image.svg"), BlankSvgContents);
+
+		// add the <MauiImage>
+		FileUtilities.ReplaceInFile(libFile,
+			"</Project>",
+			"""
+			<PropertyGroup>
+				<UseMaui>true</UseMaui>
+				<SingleProject>true</SingleProject>
+			</PropertyGroup>
+			<ItemGroup>
+				<MauiImage Include="the_image.svg" />
+			</ItemGroup>
+			</Project>
+			""");
+
+		// build
+		Assert.IsTrue(DotnetInternal.Build(appFile, "Debug", properties: BuildProps),
+			$"Project {Path.GetFileName(appFile)} failed to build. Check test output/attachments for errors.");
+
+		// assert
+		Assert.True(File.Exists(Path.Combine(appDir, $"obj\\Debug\\{DotNetCurrent}-android\\resizetizer\\r\\drawable-mdpi\\the_image.png")),
+			"Android was missing the image file.");
+		Assert.True(File.Exists(Path.Combine(appDir, $"obj\\Debug\\{DotNetCurrent}-ios\\iossimulator-x64\\resizetizer\\r\\the_image.png")),
+			"iOS was missing the image file.");
+		Assert.True(File.Exists(Path.Combine(appDir, $"obj\\Debug\\{DotNetCurrent}-maccatalyst\\maccatalyst-x64\\resizetizer\\r\\the_image.png")),
+			"Mac Catalyst was missing the image file.");
+		if (TestEnvironment.IsWindows)
+			Assert.True(File.Exists(Path.Combine(appDir, $"obj\\Debug\\{DotNetCurrent}-windows10.0.19041.0\\win10-x64\\resizetizer\\r\\the_image.scale-100.png")),
+				"Windows was missing the image file.");
+	}
+}