Merge pull request #1370 from AvaloniaUI/fixes/1354-textbox-truncated

Fix TextBox text truncation.

src/Avalonia.Controls/TextBox.cs

@@ -98,9 +98,19 @@ namespace Avalonia.Controls
             var horizontalScrollBarVisibility = Observable.CombineLatest(
                 this.GetObservable(AcceptsReturnProperty),
                 this.GetObservable(TextWrappingProperty),
-                (acceptsReturn, wrapping) => acceptsReturn && wrapping == TextWrapping.NoWrap ?
-                    ScrollBarVisibility.Auto : ScrollBarVisibility.Disabled);
-
+                (acceptsReturn, wrapping) =>
+                {
+                    if (acceptsReturn)
+                    {
+                        return wrapping == TextWrapping.NoWrap ?
+                            ScrollBarVisibility.Visible :
+                            ScrollBarVisibility.Disabled;
+                    }
+                    else
+                    {
+                        return ScrollBarVisibility.Hidden;
+                    }
+                });
             Bind(
                 ScrollViewer.HorizontalScrollBarVisibilityProperty,
                 horizontalScrollBarVisibility,
@@ -487,37 +497,34 @@ namespace Avalonia.Controls
 
         protected override void OnPointerPressed(PointerPressedEventArgs e)
         {
-            if (e.Source == _presenter)
-            {
-                var point = e.GetPosition(_presenter);
-                var index = CaretIndex = _presenter.GetCaretIndex(point);
-                var text = Text;
+            var point = e.GetPosition(_presenter);
+            var index = CaretIndex = _presenter.GetCaretIndex(point);
+            var text = Text;
 
-                if (text != null)
+            if (text != null)
+            {
+                switch (e.ClickCount)
                 {
-                    switch (e.ClickCount)
-                    {
-                        case 1:
-                            SelectionStart = SelectionEnd = index;
-                            break;
-                        case 2:
-                            if (!StringUtils.IsStartOfWord(text, index))
-                            {
-                                SelectionStart = StringUtils.PreviousWord(text, index);
-                            }
+                    case 1:
+                        SelectionStart = SelectionEnd = index;
+                        break;
+                    case 2:
+                        if (!StringUtils.IsStartOfWord(text, index))
+                        {
+                            SelectionStart = StringUtils.PreviousWord(text, index);
+                        }
 
-                            SelectionEnd = StringUtils.NextWord(text, index);
-                            break;
-                        case 3:
-                            SelectionStart = 0;
-                            SelectionEnd = text.Length;
-                            break;
-                    }
+                        SelectionEnd = StringUtils.NextWord(text, index);
+                        break;
+                    case 3:
+                        SelectionStart = 0;
+                        SelectionEnd = text.Length;
+                        break;
                 }
-
-                e.Device.Capture(_presenter);
-                e.Handled = true;
             }
+
+            e.Device.Capture(_presenter);
+            e.Handled = true;
         }
 
         protected override void OnPointerMoved(PointerEventArgs e)