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Preview: promote selected layer for hit testing

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Temporarily raise the selected preview item and prioritize it in the custom hit test without changing scene order. Refresh integration-test expectations for Brand logo layers and explicit thumbnail assets.

WPF references: https://learn.microsoft.com/en-us/dotnet/api/system.windows.controls.panel.zindex?view=windowsdesktop-10.0 https://learn.microsoft.com/en-us/dotnet/desktop/wpf/graphics-multimedia/hit-testing-in-the-visual-layer
This commit is contained in:
gramps
2026-10-28 13:09:15 -07:00
parent 7da287244b
commit 769c616706
13 changed files with 326 additions and 79 deletions
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ytLive.Tests/LayerReorderPersistenceTests.cs
+8 -9
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@@ -83,7 +83,7 @@ public sealed class LayerReorderPersistenceTests
var vm = (MainViewModel)window.DataContext;
vm.StagedScene = vm.Scenes.Single(s => SceneCatalog.Is(s.Name, SceneCatalog.Live));
Assert.True(vm.StagedScene!.Elements.OfType<Source>().Count() >= 4,
"3 seeded layers + the healed Background must load");
"3 seeded layers + the healed Background + Brand logo must load");
window.Show();
window.Activate();
@@ -94,12 +94,9 @@ public sealed class LayerReorderPersistenceTests
var list = (FocusPreservingListBox)panel.FindName("SourceList")!;
list.UpdateLayout();
// Elements = [Background, Zoom(placeholder, collapsed), ImgA, ImgB,
// ImgC]. Physically drag ImgC up onto ImgA: the handlers reorder the
// live elements to [Background, Zoom, ImgC, ImgA, ImgB] and EndListDrag
// must persist that. Rows are resolved BY ITEM — the collapsed zoom row
// shifts container indices, but ItemContainerGenerator maps items to
// their (collapsed = zero-height) containers transparently.
// Brand logo is a permanent layer between Background and user layers.
// Physically drag ImgC above ImgA; the background and logo keep their
// relative positions while EndListDrag persists the user-layer reorder.
var sources = vm.StagedScene.Elements.OfType<Source>().ToArray();
var from = RowScreenPoint(list, sources.First(s => s.Name == "ImgC"));
var to = RowScreenPoint(list, sources.First(s => s.Name == "ImgA"));
@@ -115,7 +112,9 @@ public sealed class LayerReorderPersistenceTests
var expected = vm.StagedScene.Elements.OfType<Source>().Select(s => s.Name).ToArray();
Assert.Equal("Background", expected[0]);
Assert.Equal("ImgC", expected[1]);
Assert.Equal("Brand logo", expected[1]);
Assert.Equal("ImgC", expected[2]);
Assert.True(Array.IndexOf(expected, "ImgC") < Array.IndexOf(expected, "ImgA"));
Assert.True(PumpUntil(() => SourceNamesInDb(tempDb).SequenceEqual(expected),
TimeSpan.FromSeconds(10)),
@@ -466,4 +465,4 @@ public sealed class LayerReorderPersistenceTests
}
}
}
}
}