0.7.4.1

动画优化
2026-06-21 16:14:28 +08:00 · 2026-03-22 14:47:15 +08:00
parent c3db5af923
commit def21c79b1
16 changed files with 3012 additions and 456 deletions
--- a/LanMountainDesktop.Tests/DesktopPlacementMathTests.cs
+++ b/LanMountainDesktop.Tests/DesktopPlacementMathTests.cs
@@ -0,0 +1,138 @@
+using Avalonia;
+using LanMountainDesktop.DesktopEditing;
+using Xunit;
+
+namespace LanMountainDesktop.Tests;
+
+public sealed class DesktopPlacementMathTests
+{
+    [Fact]
+    public void ComputeDragStartThreshold_UsesFloorAndCellScale()
+    {
+        Assert.Equal(10d, DesktopPlacementMath.ComputeDragStartThreshold(24));
+        Assert.Equal(14.4d, DesktopPlacementMath.ComputeDragStartThreshold(80), 3);
+    }
+
+    [Fact]
+    public void HasExceededThreshold_OnlyReturnsTrueAfterEnoughMovement()
+    {
+        var start = new Point(20, 20);
+
+        Assert.False(DesktopPlacementMath.HasExceededThreshold(start, new Point(27, 25), 10));
+        Assert.True(DesktopPlacementMath.HasExceededThreshold(start, new Point(31, 20), 10));
+    }
+
+    [Fact]
+    public void OcclusionHelpers_DetectPointAndRectOverlap()
+    {
+        var libraryBounds = new Rect(100, 100, 200, 160);
+
+        Assert.True(DesktopPlacementMath.IsOccludedByComponentLibrary(new Point(120, 150), libraryBounds));
+        Assert.False(DesktopPlacementMath.IsOccludedByComponentLibrary(new Point(80, 90), libraryBounds));
+        Assert.True(DesktopPlacementMath.IsOccludedByComponentLibrary(new Rect(250, 120, 120, 80), libraryBounds));
+        Assert.False(DesktopPlacementMath.IsOccludedByComponentLibrary(new Rect(10, 10, 40, 40), libraryBounds));
+    }
+
+    [Fact]
+    public void TryGetSnappedCell_ClampsInsideGridBounds()
+    {
+        var grid = new DesktopGridGeometry(
+            Origin: default,
+            CellSize: 80,
+            CellGap: 8,
+            ColumnCount: 4,
+            RowCount: 5);
+
+        var result = DesktopPlacementMath.TryGetSnappedCell(
+            grid,
+            pointerInViewport: new Point(490, 520),
+            pointerOffset: new Point(10, 10),
+            widthCells: 2,
+            heightCells: 3,
+            out var column,
+            out var row);
+
+        Assert.True(result);
+        Assert.Equal(2, column);
+        Assert.Equal(2, row);
+    }
+
+    [Fact]
+    public void GetCellRect_MapsCellsToPixelRect()
+    {
+        var grid = new DesktopGridGeometry(
+            Origin: new Point(12, 24),
+            CellSize: 80,
+            CellGap: 8,
+            ColumnCount: 6,
+            RowCount: 8);
+
+        var rect = DesktopPlacementMath.GetCellRect(grid, column: 2, row: 3, widthCells: 2, heightCells: 3);
+
+        Assert.Equal(188, rect.X, 3);
+        Assert.Equal(288, rect.Y, 3);
+        Assert.Equal(168, rect.Width, 3);
+        Assert.Equal(256, rect.Height, 3);
+    }
+
+    [Fact]
+    public void Session_DoesNotCommitWhilePointerIsStillInsideLibrary()
+    {
+        var session = DesktopEditSession.CreatePendingNew(
+            componentId: "demo",
+            pageIndex: 0,
+            widthCells: 2,
+            heightCells: 2,
+            startPointerInViewport: new Point(80, 80),
+            pointerOffsetInViewport: new Point(60, 60),
+            componentLibraryBounds: new Rect(0, 0, 220, 300));
+
+        session = session.WithCurrentPointer(new Point(130, 150));
+
+        Assert.True(session.HasExceededThreshold(DesktopPlacementMath.ComputeDragStartThreshold(80)));
+        Assert.True(session.IsPointerInsideComponentLibrary());
+        Assert.False(session.CanCommit);
+    }
+
+    [Fact]
+    public void Session_ResizePreviewStillBlocksWhenPointerRemainsInsideLibrary()
+    {
+        var session = DesktopEditSession.CreateResizingExisting(
+            componentId: "demo",
+            placementId: "placement-1",
+            pageIndex: 0,
+            widthCells: 2,
+            heightCells: 2,
+            startPointerInViewport: new Point(80, 80),
+            componentLibraryBounds: new Rect(0, 0, 220, 300))
+            .WithCurrentPointer(new Point(130, 150));
+
+        Assert.True(session.IsPointerInsideComponentLibrary());
+        Assert.False(session.CanCommit);
+    }
+
+    [Fact]
+    public void HasCellPositionChanged_DetectsNoOpAndRealMoves()
+    {
+        Assert.False(DesktopPlacementMath.HasCellPositionChanged(2, 3, 2, 3));
+        Assert.True(DesktopPlacementMath.HasCellPositionChanged(2, 3, 2, 4));
+    }
+
+    [Fact]
+    public void HasCellSpanChanged_DetectsNoOpAndRealResizes()
+    {
+        Assert.False(DesktopPlacementMath.HasCellSpanChanged(2, 3, 2, 3));
+        Assert.True(DesktopPlacementMath.HasCellSpanChanged(2, 3, 3, 3));
+    }
+
+    [Fact]
+    public void CanCommitPlacement_BlocksWhenPlacementIsOccludedByLibrary()
+    {
+        var placementRect = new Rect(160, 110, 180, 140);
+        var occludingLibraryBounds = new Rect(120, 80, 240, 220);
+        var distantLibraryBounds = new Rect(420, 420, 80, 80);
+
+        Assert.False(DesktopPlacementMath.CanCommitPlacement(placementRect, occludingLibraryBounds));
+        Assert.True(DesktopPlacementMath.CanCommitPlacement(placementRect, distantLibraryBounds));
+    }
+}