Verify Views files against decompiled, extract embedded types

Fixed files: - SkiaImageButton.cs: Added SVG support with multi-path search - SkiaNavigationPage.cs: Added LinuxApplication.IsGtkMode check - SkiaRefreshView.cs: Added ICommand support (Command, CommandParameter) - SkiaTemplatedView.cs: Added missing using statements Extracted embedded types to separate files (matching decompiled pattern): - From SkiaMenuBar.cs: MenuBarItem, MenuItem, SkiaMenuFlyout, MenuItemClickedEventArgs - From SkiaNavigationPage.cs: NavigationEventArgs - From SkiaTabbedPage.cs: TabItem - From SkiaVisualStateManager.cs: SkiaVisualStateGroupList, SkiaVisualStateGroup, SkiaVisualState, SkiaVisualStateSetter - From SkiaSwipeView.cs: SwipeItem, SwipeStartedEventArgs, SwipeEndedEventArgs - From SkiaFlyoutPage.cs: FlyoutLayoutBehavior (already separate) - From SkiaIndicatorView.cs: IndicatorShape (already separate) - From SkiaBorder.cs: SkiaFrame - From SkiaCarouselView.cs: PositionChangedEventArgs - From SkiaCollectionView.cs: SkiaSelectionMode, ItemsLayoutOrientation - From SkiaContentPresenter.cs: LayoutAlignment Verified matching decompiled: - SkiaContextMenu.cs, SkiaFlexLayout.cs, SkiaGraphicsView.cs Build: 0 errors 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-01 17:02:39 -05:00
parent 6007b84e7a
commit f6eadaad57
171 changed files with 4208 additions and 3913 deletions
--- a/Services/VirtualizationExtensions.cs
+++ b/Services/VirtualizationExtensions.cs
@@ -0,0 +1,73 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Microsoft.Maui.Platform.Linux.Services;
+
+public static class VirtualizationExtensions
+{
+    public static (int first, int last) CalculateVisibleRange(float scrollOffset, float viewportHeight, float itemHeight, float itemSpacing, int totalItems)
+    {
+        if (totalItems == 0)
+        {
+            return (-1, -1);
+        }
+
+        var totalItemHeight = itemHeight + itemSpacing;
+        var first = Math.Max(0, (int)(scrollOffset / totalItemHeight));
+        var last = Math.Min(totalItems - 1, (int)((scrollOffset + viewportHeight) / totalItemHeight) + 1);
+
+        return (first, last);
+    }
+
+    public static (int first, int last) CalculateVisibleRangeVariable(float scrollOffset, float viewportHeight, Func<int, float> getItemHeight, float itemSpacing, int totalItems)
+    {
+        if (totalItems == 0)
+        {
+            return (-1, -1);
+        }
+
+        var firstVisible = 0;
+        var currentOffset = 0f;
+
+        for (var i = 0; i < totalItems; i++)
+        {
+            var height = getItemHeight(i);
+            if (currentOffset + height > scrollOffset)
+            {
+                firstVisible = i;
+                break;
+            }
+            currentOffset += height + itemSpacing;
+        }
+
+        var lastVisible = firstVisible;
+        var endOffset = scrollOffset + viewportHeight;
+
+        for (var i = firstVisible; i < totalItems; i++)
+        {
+            var height = getItemHeight(i);
+            if (currentOffset > endOffset)
+            {
+                break;
+            }
+            lastVisible = i;
+            currentOffset += height + itemSpacing;
+        }
+
+        return (firstVisible, lastVisible);
+    }
+
+    public static (int firstRow, int lastRow) CalculateVisibleGridRange(float scrollOffset, float viewportHeight, float rowHeight, float rowSpacing, int totalRows)
+    {
+        if (totalRows == 0)
+        {
+            return (-1, -1);
+        }
+
+        var totalRowHeight = rowHeight + rowSpacing;
+        var firstRow = Math.Max(0, (int)(scrollOffset / totalRowHeight));
+        var lastRow = Math.Min(totalRows - 1, (int)((scrollOffset + viewportHeight) / totalRowHeight) + 1);
+
+        return (firstRow, lastRow);
+    }
+}