datagrid lines

src/Consolonia.Themes.TurboVision/Templates/Controls/DataGrid.axaml

@@ -72,12 +72,12 @@
 
                     </Grid>
 
-                    <Border Name="VerticalSeparator"
+                    <helpers:FastLineSeparator Name="VerticalSeparator"
                             Grid.Column="1"
-                            Width="1"
+                            Orientation="Vertical"
                             VerticalAlignment="Stretch"
-                            BorderThickness="1"
-                            BorderBrush="{TemplateBinding BorderBrush}"
+                            Width="1"
+                            Brush="{TemplateBinding BorderBrush}"
                             IsVisible="{TemplateBinding AreSeparatorsVisible}" />
                 </Grid>
             </ControlTemplate>
@@ -313,14 +313,23 @@
                                                   Background="{TemplateBinding Background}"
                                                   Margin="0,1" />
 
+                            <helpers:FastLineSeparator Grid.Row="0"
+                                                       VerticalAlignment="Bottom"
+                                                       Grid.ColumnSpan="3"
+                                                       Grid.Column="0"
+                                                       Orientation="Horizontal"
+                                                       Brush="{TemplateBinding BorderBrush}"
+                                                       Margin="-1,0" />
+
+                            <!--
                             <Border Grid.Row="0"
                                     VerticalAlignment="Bottom"
                                     Grid.ColumnSpan="3"
                                     Grid.Column="0"
-                                    Height="1"
+                                    Height="2"
                                     BorderBrush="{TemplateBinding BorderBrush}"
                                     BorderThickness="1"
-                                    Margin="-1,0" />
+                                    Margin="-1,0" />-->
 
                             <!--<DataGridColumnHeader Name="PART_TopRightCornerHeader" Grid.Column="2" 
                                   Background="{DynamicResource ThemeAccentBrush}"/>-->

src/Consolonia.Themes.TurboVision/Templates/Controls/Helpers/FastLineSeparator.cs

@@ -0,0 +1,67 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.Media;
+
+namespace Consolonia.Themes.TurboVision.Templates.Controls.Helpers
+{
+    public class FastLineSeparator : Control
+    {
+        public static readonly StyledProperty<Orientation> OrientationProperty =
+            AvaloniaProperty.Register<FastLineSeparator, Orientation>(nameof(Orientation), Orientation.Horizontal);
+
+        public Orientation Orientation
+        {
+            get => GetValue(OrientationProperty);
+            set => SetValue(OrientationProperty, value);
+        }
+
+        public static readonly StyledProperty<IBrush> BrushProperty =
+            AvaloniaProperty.Register<FastLineSeparator, IBrush>(nameof(Brush), Brushes.Black);
+
+        public IBrush Brush
+        {
+            get => GetValue(BrushProperty);
+            set => SetValue(BrushProperty, value);
+        }
+
+
+        public FastLineSeparator()
+        {
+            AffectsRender<FastLineSeparator>(OrientationProperty);
+        }
+
+        protected override Size MeasureOverride(Size availableSize)
+        {
+            return Orientation == Orientation.Horizontal
+                ? new Size(0, 1)
+                : new Size(1, 0);
+        }
+
+        protected override Size ArrangeOverride(Size finalSize)
+        {
+            return finalSize;
+        }
+
+        public override void Render(DrawingContext context)
+        {
+            var pen = new Pen(Brush);
+
+            if (Orientation == Orientation.Horizontal)
+            {
+                // Draw a horizontal line across the control's width
+                var startPoint = new Point(0, Bounds.Height / 2);
+                var endPoint = new Point(Bounds.Width-1, Bounds.Height / 2);
+                context.DrawLine(pen, startPoint, endPoint);
+            }
+            else
+            {
+                // Draw a vertical line across the control's height
+                var startPoint = new Point(Bounds.Width / 2, 0);
+                var endPoint = new Point(Bounds.Width / 2, Bounds.Height-1);
+                context.DrawLine(pen, startPoint, endPoint);
+            }
+        }
+
+    }
+}