Fix layout rendering, text wrapping, and scrollbar issues

- LinuxViewRenderer: Remove redundant child rendering that caused "View already has a parent" errors
- SkiaLabel: Consider LineBreakMode.WordWrap for multi-line measurement and rendering
- SkiaScrollView: Update ContentSize in OnDraw with properly constrained measurement
- SkiaShell: Account for padding in MeasureOverride (consistent with ArrangeOverride)
- Version bump to 1.0.0-preview.4

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Hosting/LinuxViewRenderer.cs

@@ -442,6 +442,7 @@ public class LinuxViewRenderer
             }
 
             // Create handler for the view
+            // The handler's ConnectHandler and property mappers handle child views automatically
             var handler = view.ToHandler(_mauiContext);
 
             if (handler?.PlatformView is not SkiaView skiaView)
@@ -450,98 +451,8 @@ public class LinuxViewRenderer
                 return CreateFallbackView(view);
             }
 
-            // Recursively render children for layout views
+            // Handlers manage their own children via ConnectHandler and property mappers
-            if (view is ILayout layout && skiaView is SkiaLayoutView layoutView)
+            // No manual child rendering needed here - that caused "View already has a parent" errors
-            {
-
-                // For StackLayout, copy orientation and spacing
-                if (layoutView is SkiaStackLayout skiaStack)
-                {
-                    if (view is Controls.VerticalStackLayout)
-                    {
-                        skiaStack.Orientation = StackOrientation.Vertical;
-                    }
-                    else if (view is Controls.HorizontalStackLayout)
-                    {
-                        skiaStack.Orientation = StackOrientation.Horizontal;
-                    }
-                    else if (view is Controls.StackLayout sl)
-                    {
-                        skiaStack.Orientation = sl.Orientation == Microsoft.Maui.Controls.StackOrientation.Vertical
-                            ? StackOrientation.Vertical : StackOrientation.Horizontal;
-                    }
-
-                    if (view is IStackLayout stackLayout)
-                    {
-                        skiaStack.Spacing = (float)stackLayout.Spacing;
-                    }
-                }
-
-                // For Grid, set up row/column definitions
-                if (view is Controls.Grid mauiGrid && layoutView is SkiaGrid skiaGrid)
-                {
-                    // Copy row definitions
-                    foreach (var rowDef in mauiGrid.RowDefinitions)
-                    {
-                        skiaGrid.RowDefinitions.Add(new GridLength((float)rowDef.Height.Value,
-                            rowDef.Height.IsAbsolute ? GridUnitType.Absolute :
-                            rowDef.Height.IsStar ? GridUnitType.Star : GridUnitType.Auto));
-                    }
-                    // Copy column definitions
-                    foreach (var colDef in mauiGrid.ColumnDefinitions)
-                    {
-                        skiaGrid.ColumnDefinitions.Add(new GridLength((float)colDef.Width.Value,
-                            colDef.Width.IsAbsolute ? GridUnitType.Absolute :
-                            colDef.Width.IsStar ? GridUnitType.Star : GridUnitType.Auto));
-                    }
-                    skiaGrid.RowSpacing = (float)mauiGrid.RowSpacing;
-                    skiaGrid.ColumnSpacing = (float)mauiGrid.ColumnSpacing;
-                }
-
-                foreach (var child in layout)
-                {
-                    if (child is IView childViewElement)
-                    {
-                        var childView = RenderView(childViewElement);
-                        if (childView != null)
-                        {
-                            // For Grid, get attached properties for position
-                            if (layoutView is SkiaGrid grid && child is BindableObject bindable)
-                            {
-                                var row = Controls.Grid.GetRow(bindable);
-                                var col = Controls.Grid.GetColumn(bindable);
-                                var rowSpan = Controls.Grid.GetRowSpan(bindable);
-                                var colSpan = Controls.Grid.GetColumnSpan(bindable);
-                                grid.AddChild(childView, row, col, rowSpan, colSpan);
-                            }
-                            else
-                            {
-                                layoutView.AddChild(childView);
-                            }
-                        }
-                    }
-                }
-            }
-            else if (view is IContentView contentView && contentView.Content is IView contentElement)
-            {
-                var content = RenderView(contentElement);
-                if (content != null)
-                {
-                    if (skiaView is SkiaBorder border)
-                    {
-                        border.AddChild(content);
-                    }
-                    else if (skiaView is SkiaFrame frame)
-                    {
-                        frame.AddChild(content);
-                    }
-                    else if (skiaView is SkiaScrollView scrollView)
-                    {
-                        scrollView.Content = content;
-                    }
-                }
-            }
-
             return skiaView;
         }
         catch (Exception)

OpenMaui.Controls.Linux.csproj

@@ -12,7 +12,7 @@
 
     <!-- NuGet Package Properties -->
     <PackageId>OpenMaui.Controls.Linux</PackageId>
-    <Version>1.0.0-preview.1</Version>
+    <Version>1.0.0-preview.4</Version>
     <Authors>MarketAlly LLC, David H. Friedel Jr.</Authors>
     <Company>MarketAlly LLC</Company>
     <Product>OpenMaui Linux Controls</Product>
@@ -23,7 +23,7 @@
     <RepositoryUrl>https://git.marketally.com/open-maui/maui-linux.git</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageTags>maui;linux;desktop;skia;gui;cross-platform;dotnet;x11;wayland;openmaui</PackageTags>
-    <PackageReleaseNotes>Initial preview release with 35+ controls and full platform services.</PackageReleaseNotes>
+    <PackageReleaseNotes>Preview 4: Fixed handler rendering for layouts, text wrapping, and scrollbar measurement issues.</PackageReleaseNotes>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageIcon>icon.png</PackageIcon>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>

Views/SkiaLabel.cs

@@ -429,9 +429,10 @@ public class SkiaLabel : SkiaView
             bounds.Bottom - Padding.Bottom);
 
         // Handle single line vs multiline
-        // Use DrawSingleLine for normal labels (MaxLines <= 1 or unlimited) without newlines
+        // Use DrawMultiLineWithWrapping when: MaxLines > 1, text has newlines, OR WordWrap is enabled
-        // Use DrawMultiLineWithWrapping only when MaxLines > 1 (word wrap needed) or text has newlines
+        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n') ||
-        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n');
+                              LineBreakMode == LineBreakMode.WordWrap ||
+                              LineBreakMode == LineBreakMode.CharacterWrap;
         if (needsMultiLine)
         {
             DrawMultiLineWithWrapping(canvas, paint, font, contentBounds);
@@ -771,8 +772,10 @@ public class SkiaLabel : SkiaView
         using var font = new SKFont(typeface, FontSize);
         using var paint = new SKPaint(font);
 
-        // Use same logic as OnDraw: multiline only when MaxLines > 1 or text has newlines
+        // Use multiline when: MaxLines > 1, text has newlines, OR WordWrap is enabled
-        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n');
+        bool needsMultiLine = MaxLines > 1 || Text.Contains('\n') ||
+                              LineBreakMode == LineBreakMode.WordWrap ||
+                              LineBreakMode == LineBreakMode.CharacterWrap;
         if (!needsMultiLine)
         {
             var textBounds = new SKRect();

Views/SkiaScrollView.cs

@@ -268,8 +268,16 @@ public class SkiaScrollView : SkiaView
         if (_content != null)
         {
             // Ensure content is measured and arranged
-            var availableSize = new SKSize(bounds.Width, float.PositiveInfinity);
+            // Account for vertical scrollbar width to prevent horizontal scrollbar from appearing
-            _content.Measure(availableSize);
+            var effectiveWidth = bounds.Width;
+            if (Orientation != ScrollOrientation.Horizontal && VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+            {
+                // Reserve space for vertical scrollbar if content might be taller than viewport
+                effectiveWidth -= ScrollBarWidth;
+            }
+            var availableSize = new SKSize(effectiveWidth, float.PositiveInfinity);
+            // Update ContentSize with the properly constrained measurement
+            ContentSize = _content.Measure(availableSize);
 
             // Apply content's margin
             var margin = _content.Margin;
@@ -669,12 +677,18 @@ public class SkiaScrollView : SkiaView
                 case ScrollOrientation.Both:
                     // For Both: first measure with viewport width to get responsive layout
                     // Content can still exceed viewport if it has minimum width constraints
+                    // Reserve space for vertical scrollbar to prevent horizontal scrollbar
                     contentWidth = float.IsInfinity(availableSize.Width) ? 800f : availableSize.Width;
+                    if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+                        contentWidth -= ScrollBarWidth;
                     contentHeight = float.PositiveInfinity;
                     break;
                 case ScrollOrientation.Vertical:
                 default:
+                    // Reserve space for vertical scrollbar to prevent horizontal scrollbar
                     contentWidth = float.IsInfinity(availableSize.Width) ? 800f : availableSize.Width;
+                    if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
+                        contentWidth -= ScrollBarWidth;
                     contentHeight = float.PositiveInfinity;
                     break;
             }

Views/SkiaShell.cs

@@ -287,14 +287,14 @@ public class SkiaShell : SkiaLayoutView
 
     protected override SKSize MeasureOverride(SKSize availableSize)
     {
-        // Measure current content
+        // Measure current content with padding accounted for (consistent with ArrangeOverride)
         if (_currentContent != null)
         {
             float contentTop = NavBarIsVisible ? NavBarHeight : 0;
             float contentBottom = TabBarIsVisible ? TabBarHeight : 0;
             var contentSize = new SKSize(
-                availableSize.Width,
+                availableSize.Width - (float)Padding.Left - (float)Padding.Right,
-                availableSize.Height - contentTop - contentBottom);
+                availableSize.Height - contentTop - contentBottom - (float)Padding.Top - (float)Padding.Bottom);
             _currentContent.Measure(contentSize);
         }