Fixed TextBlock text wrapping.

And added render test (so far only to D2D backend)

src/Avalonia.Controls/Avalonia.Controls.csproj

@@ -164,7 +164,6 @@
     <Compile Include="ToolTip.cs" />
     <Compile Include="UserControl.cs" />
     <Compile Include="Templates\TemplateExtensions.cs" />
-    <Compile Include="TextWrapping.cs" />
     <Compile Include="Utils\AncestorFinder.cs" />
     <Compile Include="Utils\IEnumerableUtils.cs" />
     <Compile Include="Utils\StringUtils.cs" />

src/Avalonia.Controls/TextBlock.cs

@@ -99,6 +99,7 @@ namespace Avalonia.Controls
         /// </summary>
         static TextBlock()
         {
+            ClipToBoundsProperty.OverrideDefaultValue<TextBlock>(true);
             AffectsRender(ForegroundProperty);
             AffectsRender(FontWeightProperty);
             AffectsRender(FontSizeProperty);
@@ -355,7 +356,8 @@ namespace Avalonia.Controls
                 FontSize,
                 FontStyle,
                 TextAlignment,
-                FontWeight);
+                FontWeight,
+                TextWrapping);
             result.Constraint = constraint;
             return result;
         }

src/Avalonia.SceneGraph/Avalonia.SceneGraph.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -68,6 +68,7 @@
     <Compile Include="Media\BrushMappingMode.cs" />
     <Compile Include="Media\Color.cs" />
     <Compile Include="Media\Colors.cs" />
+    <Compile Include="Media\TextWrapping.cs" />
     <Compile Include="Media\TransformGroup.cs" />
     <Compile Include="Media\DashStyle.cs" />
     <Compile Include="Media\DrawingContext.cs" />

src/Avalonia.SceneGraph/Media/FormattedText.cs

@@ -21,13 +21,15 @@ namespace Avalonia.Media
         /// <param name="fontStyle">The font style.</param>
         /// <param name="textAlignment">The text alignment.</param>
         /// <param name="fontWeight">The font weight.</param>
+        /// <param name="wrapping">The text wrapping mode.</param>
         public FormattedText(
             string text,
             string fontFamilyName,
             double fontSize,
-            FontStyle fontStyle,
-            TextAlignment textAlignment,
-            FontWeight fontWeight)
+            FontStyle fontStyle = FontStyle.Normal,
+            TextAlignment textAlignment = TextAlignment.Left,
+            FontWeight fontWeight = FontWeight.Normal,
+            TextWrapping wrapping = TextWrapping.Wrap)
         {
             Contract.Requires<ArgumentNullException>(text != null);
             Contract.Requires<ArgumentNullException>(fontFamilyName != null);
@@ -39,6 +41,7 @@ namespace Avalonia.Media
             FontStyle = fontStyle;
             FontWeight = fontWeight;
             TextAlignment = textAlignment;
+            Wrapping = wrapping;
 
             var platform = AvaloniaLocator.Current.GetService<IPlatformRenderInterface>();
 
@@ -53,7 +56,8 @@ namespace Avalonia.Media
                 fontSize,
                 fontStyle,
                 textAlignment,
-                fontWeight);
+                fontWeight,
+                wrapping);
         }
 
         /// <summary>
@@ -76,63 +80,42 @@ namespace Avalonia.Media
         /// <summary>
         /// Gets the font family.
         /// </summary>
-        public string FontFamilyName
-        {
-            get;
-            private set;
-        }
+        public string FontFamilyName { get; }
 
         /// <summary>
         /// Gets the font size.
         /// </summary>
-        public double FontSize
-        {
-            get;
-            private set;
-        }
+        public double FontSize { get; }
 
         /// <summary>
         /// Gets the font style.
         /// </summary>
-        public FontStyle FontStyle
-        {
-            get;
-            private set;
-        }
+        public FontStyle FontStyle { get; }
 
         /// <summary>
         /// Gets the font weight.
         /// </summary>
-        public FontWeight FontWeight
-        {
-            get;
-            private set;
-        }
+        public FontWeight FontWeight { get; }
 
         /// <summary>
         /// Gets the text.
         /// </summary>
-        public string Text
-        {
-            get;
-            private set;
-        }
+        public string Text { get; }
 
         /// <summary>
         /// Gets platform-specific platform implementation.
         /// </summary>
-        public IFormattedTextImpl PlatformImpl
-        {
-            get; }
+        public IFormattedTextImpl PlatformImpl { get; }
 
         /// <summary>
         /// Gets the text alignment.
         /// </summary>
-        public TextAlignment TextAlignment
-        {
-            get;
-            private set;
-        }
+        public TextAlignment TextAlignment { get; }
+
+        /// <summary>
+        /// Gets the text wrapping.
+        /// </summary>
+        public TextWrapping Wrapping { get; }
 
         /// <summary>
         /// Disposes of unmanaged resources associated with the formatted text.

src/Avalonia.Controls/TextWrapping.cs → src/Avalonia.SceneGraph/Media/TextWrapping.cs

@@ -1,10 +1,10 @@
 // Copyright (c) The Avalonia Project. All rights reserved.
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
-namespace Avalonia.Controls
+namespace Avalonia.Media
 {
     /// <summary>
-    /// Controls the wrapping mode in a <see cref="TextBlock"/>.
+    /// Controls the wrapping mode of text.
     /// </summary>
     public enum TextWrapping
     {

src/Avalonia.SceneGraph/Platform/IPlatformRenderInterface.cs

@@ -20,6 +20,7 @@ namespace Avalonia.Platform
         /// <param name="fontStyle">The font style.</param>
         /// <param name="textAlignment">The text alignment.</param>
         /// <param name="fontWeight">The font weight.</param>
+        /// <param name="wrapping">The text wrapping mode.</param>
         /// <returns>An <see cref="IFormattedTextImpl"/>.</returns>
         IFormattedTextImpl CreateFormattedText(
             string text,
@@ -27,7 +28,8 @@ namespace Avalonia.Platform
             double fontSize,
             FontStyle fontStyle,
             TextAlignment textAlignment,
-            FontWeight fontWeight);
+            FontWeight fontWeight,
+            TextWrapping wrapping);
 
         /// <summary>
         /// Creates a stream geometry implementation.

src/Avalonia.SceneGraph/Rendering/RendererMixin.cs

@@ -62,7 +62,8 @@ namespace Avalonia.Rendering
                         var txt = new FormattedText("Frame #" + s_frameNum + " FPS: " + s_fps, "Arial", 18,
                             FontStyle.Normal,
                             TextAlignment.Left,
-                            FontWeight.Normal))
+                            FontWeight.Normal,
+                            TextWrapping.NoWrap))
                     {
                         ctx.FillRectangle(Brushes.White, new Rect(pt, txt.Measure()));
                         ctx.DrawText(Brushes.Black, pt, txt);

src/Gtk/Avalonia.Cairo/CairoPlatform.cs

@@ -44,7 +44,8 @@ namespace Avalonia.Cairo
             double fontSize,
             FontStyle fontStyle,
             TextAlignment textAlignment,
-            Avalonia.Media.FontWeight fontWeight)
+            Avalonia.Media.FontWeight fontWeight,
+            TextWrapping wrapping)
         {
             return new FormattedTextImpl(s_pangoContext, text, fontFamily, fontSize, fontStyle, textAlignment, fontWeight);
         }

src/Skia/Avalonia.Skia/PlatformRenderInterface.cs

@@ -18,7 +18,7 @@ namespace Avalonia.Skia
         }
 
         public IFormattedTextImpl CreateFormattedText(string text, string fontFamilyName, double fontSize, FontStyle fontStyle,
-            TextAlignment textAlignment, FontWeight fontWeight)
+            TextAlignment textAlignment, FontWeight fontWeight, TextWrapping wrapping)
         {
             return FormattedTextImpl.Create(text, fontFamilyName, fontSize, fontStyle, textAlignment, fontWeight);
         }

src/Windows/Avalonia.Direct2D1/Direct2D1Platform.cs

@@ -49,9 +49,10 @@ namespace Avalonia.Direct2D1
             double fontSize,
             FontStyle fontStyle,
             TextAlignment textAlignment,
-            FontWeight fontWeight)
+            FontWeight fontWeight,
+            TextWrapping wrapping)
         {
-            return new FormattedTextImpl(text, fontFamily, fontSize, fontStyle, textAlignment, fontWeight);
+            return new FormattedTextImpl(text, fontFamily, fontSize, fontStyle, textAlignment, fontWeight, wrapping);
         }
 
         public IRenderTarget CreateRenderer(IPlatformHandle handle)

src/Windows/Avalonia.Direct2D1/Media/FormattedTextImpl.cs

@@ -18,7 +18,8 @@ namespace Avalonia.Direct2D1.Media
             double fontSize,
             FontStyle fontStyle,
             TextAlignment textAlignment,
-            FontWeight fontWeight)
+            FontWeight fontWeight,
+            TextWrapping wrapping)
         {
             var factory = AvaloniaLocator.Current.GetService<DWrite.Factory>();
 
@@ -29,6 +30,9 @@ namespace Avalonia.Direct2D1.Media
                 (DWrite.FontStyle)fontStyle,
                 (float)fontSize))
             {
+                format.WordWrapping = wrapping == TextWrapping.Wrap ? 
+                    DWrite.WordWrapping.Wrap : DWrite.WordWrapping.NoWrap;
+
                 TextLayout = new DWrite.TextLayout(
                     factory,
                     text ?? string.Empty,

tests/Avalonia.RenderTests/Avalonia.Direct2D1.RenderTests.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -73,6 +73,7 @@
     <Otherwise />
   </Choose>
   <ItemGroup>
+    <Compile Include="Controls\TextBlockTests.cs" />
     <Compile Include="Media\ImageBrushTests.cs" />
     <Compile Include="Media\VisualBrushTests.cs" />
     <Compile Include="Controls\ImageTests.cs" />

tests/Avalonia.RenderTests/Controls/TextBlockTests.cs

@@ -0,0 +1,47 @@
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.Media;
+using Xunit;
+
+#if AVALONIA_CAIRO
+namespace Avalonia.Cairo.RenderTests.Controls
+#elif AVALONIA_SKIA
+namespace Avalonia.Skia.RenderTests
+#else
+namespace Avalonia.Direct2D1.RenderTests.Controls
+#endif
+{
+    public class TextBlockTests : TestBase
+    {
+        public TextBlockTests()
+            : base(@"Controls\TextBlock")
+        {
+        }
+
+        [Fact]
+        public void Wrapping_NoWrap()
+        {
+            Decorator target = new Decorator
+            {
+                Padding = new Thickness(8),
+                Width = 200,
+                Height = 200,
+                Child = new TextBlock
+                {
+                    Background = Brushes.Red,
+                    FontSize = 12,
+                    Foreground = Brushes.Black,
+                    Text = "Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit",
+                    VerticalAlignment = VerticalAlignment.Top,
+                    TextWrapping = TextWrapping.NoWrap,
+                }
+            };
+
+            RenderToFile(target);
+            CompareImages();
+        }
+    }
+}

tests/Avalonia.RenderTests/TestBase.cs

@@ -58,6 +58,11 @@ namespace Avalonia.Direct2D1.RenderTests
 
         protected void RenderToFile(Control target, [CallerMemberName] string testName = "")
         {
+            if (!Directory.Exists(OutputPath))
+            {
+                Directory.CreateDirectory(OutputPath);
+            }
+
             string path = Path.Combine(OutputPath, testName + ".out.png");
 
             using (RenderTargetBitmap bitmap = new RenderTargetBitmap(

tests/Avalonia.UnitTests/TestServices.cs

@@ -143,7 +143,8 @@ namespace Avalonia.UnitTests
                     It.IsAny<double>(),
                     It.IsAny<FontStyle>(),
                     It.IsAny<TextAlignment>(),
-                    It.IsAny<FontWeight>()) == Mock.Of<IFormattedTextImpl>() &&
+                    It.IsAny<FontWeight>(),
+                    It.IsAny<TextWrapping>()) == Mock.Of<IFormattedTextImpl>() &&
                 x.CreateStreamGeometry() == Mock.Of<IStreamGeometryImpl>(
                     y => y.Open() == Mock.Of<IStreamGeometryContextImpl>()));
         }