Merge branch 'master' into fixes/dont-create-virtualizer-before-panel

samples/BindingDemo/MainWindow.xaml

@@ -18,18 +18,18 @@
     <TabItem Header="Basic">
       <StackPanel Orientation="Vertical">
         <StackPanel Orientation="Horizontal">
-          <StackPanel Margin="18" Gap="4" Width="200">
+          <StackPanel Margin="18" Spacing="4" Width="200">
             <TextBlock FontSize="16" Text="Simple Bindings"/>
             <TextBox Watermark="Two Way" UseFloatingWatermark="True" Text="{Binding Path=StringValue}" Name="first"/>
             <TextBox Watermark="One Way" UseFloatingWatermark="True" Text="{Binding Path=StringValue, Mode=OneWay}"/>
             <TextBox Watermark="One Time" UseFloatingWatermark="True" Text="{Binding Path=StringValue, Mode=OneTime}"/>
           </StackPanel>
-          <StackPanel Margin="18" Gap="4" Width="200">
+          <StackPanel Margin="18" Spacing="4" Width="200">
             <TextBlock FontSize="16" Text="Collection Bindings"/>
             <TextBox Watermark="Items[1].StringValue" UseFloatingWatermark="True" Text="{Binding Path=Items[1].StringValue}"/>
             <Button Command="{Binding ShuffleItems}">Shuffle</Button>
           </StackPanel>
-          <StackPanel Margin="18" Gap="4" Width="200">
+          <StackPanel Margin="18" Spacing="4" Width="200">
             <TextBlock FontSize="16" Text="Negated Bindings"/>
             <TextBox Watermark="Boolean String" UseFloatingWatermark="True" Text="{Binding Path=BooleanString}"/>
             <CheckBox IsChecked="{Binding !BooleanString}">!BooleanString</CheckBox>
@@ -37,13 +37,13 @@
           </StackPanel>
         </StackPanel>
         <StackPanel Orientation="Horizontal">
-          <StackPanel Margin="18" Gap="4" Width="200" HorizontalAlignment="Left">
+          <StackPanel Margin="18" Spacing="4" Width="200" HorizontalAlignment="Left">
             <TextBlock FontSize="16" Text="Numeric Bindings"/>
             <TextBox Watermark="Double" UseFloatingWatermark="True" Text="{Binding Path=DoubleValue, Mode=TwoWay}"/>
             <TextBlock Text="{Binding Path=DoubleValue}"/>
             <ProgressBar Maximum="10" Value="{Binding DoubleValue}"/>
           </StackPanel>
-          <StackPanel Margin="18" Gap="4" Width="200" HorizontalAlignment="Left">
+          <StackPanel Margin="18" Spacing="4" Width="200" HorizontalAlignment="Left">
             <TextBlock FontSize="16" Text="Binding Sources"/>
             <TextBox Watermark="Value of first TextBox" UseFloatingWatermark="True" 
                      Text="{Binding #first.Text, Mode=TwoWay}"/>
@@ -52,7 +52,7 @@
             <TextBox Watermark="Value of SharedItem.StringValue (duplicate)" UseFloatingWatermark="True"
                      Text="{Binding StringValue, Source={StaticResource SharedItem}, Mode=TwoWay}"/>
           </StackPanel>
-          <StackPanel Margin="18" Gap="4" Width="200" HorizontalAlignment="Left">
+          <StackPanel Margin="18" Spacing="4" Width="200" HorizontalAlignment="Left">
             <TextBlock FontSize="16" Text="Scheduler"/>
             <TextBox Watermark="Background Thread" Text="{Binding CurrentTime, Mode=OneWay}"/>
             <TextBlock FontSize="16" Text="Stream Operator"/>
@@ -68,11 +68,11 @@
             <TextBlock Text="{Binding StringValue}"/>
           </DataTemplate>
         </StackPanel.DataTemplates>
-        <StackPanel Margin="18" Gap="4" Width="200">
+        <StackPanel Margin="18" Spacing="4" Width="200">
           <TextBlock FontSize="16" Text="Multiple"/>
           <ListBox Items="{Binding Items}" SelectionMode="Multiple" SelectedItems="{Binding SelectedItems}"/>
         </StackPanel>
-        <StackPanel Margin="18" Gap="4" Width="200">
+        <StackPanel Margin="18" Spacing="4" Width="200">
           <TextBlock FontSize="16" Text="Multiple"/>
           <ListBox Items="{Binding Items}" SelectionMode="Multiple" SelectedItems="{Binding SelectedItems}"/>
         </StackPanel>
@@ -87,16 +87,16 @@
     </TabItem>
     <TabItem Header="Property Validation">
       <StackPanel Orientation="Horizontal">
-        <StackPanel Margin="18" Gap="4" MinWidth="200" DataContext="{Binding ExceptionDataValidation}">
+        <StackPanel Margin="18" Spacing="4" MinWidth="200" DataContext="{Binding ExceptionDataValidation}">
           <TextBlock FontSize="16" Text="Exception Validation"/>
           <TextBox Watermark="Less Than 10" UseFloatingWatermark="True" Text="{Binding Path=LessThan10}"/>
         </StackPanel>
-        <StackPanel Margin="18" Gap="4" MinWidth="200" DataContext="{Binding IndeiDataValidation}">
+        <StackPanel Margin="18" Spacing="4" MinWidth="200" DataContext="{Binding IndeiDataValidation}">
           <TextBlock FontSize="16" Text="INotifyDataErrorInfo Validation"/>
           <TextBox Watermark="Maximum" UseFloatingWatermark="True" Text="{Binding Path=Maximum}"/>
           <TextBox Watermark="Value" UseFloatingWatermark="True" Text="{Binding Path=Value}"/>
         </StackPanel>
-        <StackPanel Margin="18" Gap="4" MinWidth="200" DataContext="{Binding DataAnnotationsValidation}">
+        <StackPanel Margin="18" Spacing="4" MinWidth="200" DataContext="{Binding DataAnnotationsValidation}">
           <TextBlock FontSize="16" Text="Data Annotations Validation"/>
           <TextBox Watermark="Phone #" UseFloatingWatermark="True" Text="{Binding PhoneNumber}"/>
           <TextBox Watermark="Less Than 10" UseFloatingWatermark="True" Text="{Binding Path=LessThan10}"/>
@@ -104,7 +104,7 @@
       </StackPanel>
     </TabItem>
     <TabItem Header="Commands">
-      <StackPanel Margin="18" Gap="4" Width="200">
+      <StackPanel Margin="18" Spacing="4" Width="200">
         <Button Content="Button" Command="{Binding StringValueCommand}" CommandParameter="Button"/>
         <ToggleButton Content="ToggleButton" IsChecked="{Binding BooleanFlag, Mode=OneWay}" Command="{Binding StringValueCommand}" CommandParameter="ToggleButton"/>
         <CheckBox Content="CheckBox" IsChecked="{Binding !BooleanFlag, Mode=OneWay}" Command="{Binding StringValueCommand}" CommandParameter="CheckBox"/>
@@ -114,4 +114,4 @@
       </StackPanel>
     </TabItem>
   </TabControl>
-</Window>
+</Window>

samples/ControlCatalog/Pages/AutoCompleteBoxPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">AutoCompleteBox</TextBlock>
     <TextBlock Classes="h2">A control into which the user can input text</TextBlock>
 
     <StackPanel Orientation="Horizontal"
               Margin="0,16,0,0"
               HorizontalAlignment="Center"
-              Gap="8">
+              Spacing="8">
       <StackPanel Orientation="Vertical">
         <TextBlock Text="MinimumPrefixLength: 1"/>
         <AutoCompleteBox Width="200"
@@ -56,4 +56,4 @@
       </StackPanel>
     </StackPanel>
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/BorderPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Border</TextBlock>
     <TextBlock Classes="h2">A control which decorates a child with a border and background</TextBlock>
 
     <StackPanel Orientation="Vertical"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <Border BorderBrush="{DynamicResource ThemeAccentBrush}" BorderThickness="2" Padding="16">
         <TextBlock>Border</TextBlock>
       </Border>
@@ -29,4 +29,4 @@
       </Border>
     </StackPanel>    
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/ButtonPage.xaml

@@ -1,14 +1,14 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Button</TextBlock>
     <TextBlock Classes="h2">A button control</TextBlock>
 
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
-      <StackPanel Orientation="Vertical" Gap="8" Width="150">
+      <StackPanel Orientation="Vertical" Spacing="8" Width="150">
         <Button>Button</Button>
         <Button Foreground="White">Foreground</Button>
         <Button Background="{DynamicResource ThemeAccentBrush}">Background</Button>
@@ -25,7 +25,7 @@
         </Button>
       </StackPanel>
 
-      <StackPanel Orientation="Vertical" Gap="8" Width="150">
+      <StackPanel Orientation="Vertical" Spacing="8" Width="150">
         <Button BorderThickness="0">No Border</Button>
         <Button BorderBrush="{DynamicResource ThemeAccentBrush}">Border Color</Button>
         <Button BorderBrush="{DynamicResource ThemeAccentBrush}" BorderThickness="4">Thick Border</Button>
@@ -33,4 +33,4 @@
       </StackPanel>
     </StackPanel>    
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/ButtonSpinnerPage.xaml

@@ -1,11 +1,11 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">ButtonSpinner</TextBlock>
     <TextBlock Classes="h2">The ButtonSpinner control allows you to add button spinners to any element and then respond to the Spin event to manipulate that element.</TextBlock>
 
-    <StackPanel Orientation="Vertical" Gap="8" Width="200" Margin="0,20,0,0">
+    <StackPanel Orientation="Vertical" Spacing="8" Width="200" Margin="0,20,0,0">
       <CheckBox Name="allowSpinCheck" IsChecked="True">AllowSpin</CheckBox>
       <CheckBox Name="showSpinCheck" IsChecked="True">ShowButtonSpinner</CheckBox>
       <ButtonSpinner Spin="OnSpin" Height="30"
@@ -21,4 +21,4 @@
     </StackPanel>
   </StackPanel>
 
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/CalendarPage.xaml

@@ -1,13 +1,13 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Calendar</TextBlock>
     <TextBlock Classes="h2">A calendar control for selecting dates</TextBlock>
         
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <StackPanel Orientation="Vertical">
         <TextBlock Text="SelectionMode: None"/>
         <Calendar SelectionMode="None"
@@ -44,4 +44,4 @@
       
     </StackPanel> 
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/CanvasPage.xaml

@@ -1,5 +1,5 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Canvas</TextBlock>
     <TextBlock Classes="h2">A panel which lays out its children by explicit coordinates</TextBlock>
     <Canvas Background="Yellow" Width="300" Height="400">
@@ -31,4 +31,4 @@
       <Polyline Points="0,0 65,0 78,-26 91,39 104,-39 117,13 130,0 195,0" Stroke="Brown" Canvas.Left="30" Canvas.Top="350"/>
     </Canvas>
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/CarouselPage.xaml

@@ -1,9 +1,9 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Carousel</TextBlock>
     <TextBlock Classes="h2">An items control that displays its items as pages that fill the control.</TextBlock>
 
-    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Gap="8">
+    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Spacing="8">
       <Button Name="left" VerticalAlignment="Center" Padding="20">
         <Path Data="M20,11V13H8L13.5,18.5L12.08,19.92L4.16,12L12.08,4.08L13.5,5.5L8,11H20Z" Fill="Black"/>
       </Button>
@@ -20,7 +20,7 @@
       </Button>
     </StackPanel>
 
-    <StackPanel Orientation="Horizontal" Gap="4">
+    <StackPanel Orientation="Horizontal" Spacing="4">
       <TextBlock VerticalAlignment="Center">Transition</TextBlock>
       <DropDown Name="transition" SelectedIndex="1" VerticalAlignment="Center">
         <DropDownItem>None</DropDownItem>
@@ -29,7 +29,7 @@
       </DropDown>
     </StackPanel>
 
-    <StackPanel Orientation="Horizontal" Gap="4">
+    <StackPanel Orientation="Horizontal" Spacing="4">
       <TextBlock VerticalAlignment="Center">Orientation</TextBlock>
       <DropDown Name="orientation" SelectedIndex="1" VerticalAlignment="Center">
         <DropDownItem>Horizontal</DropDownItem>
@@ -38,4 +38,4 @@
     </StackPanel>
     
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/CheckBoxPage.xaml

@@ -1,15 +1,15 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">CheckBox</TextBlock>
     <TextBlock Classes="h2">A check box control</TextBlock>
 
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <StackPanel Orientation="Vertical"
-                  Gap="16">
+                  Spacing="16">
         <CheckBox>Unchecked</CheckBox>
         <CheckBox IsChecked="True">Checked</CheckBox>
         <CheckBox IsChecked="{x:Null}">Indeterminate</CheckBox>
@@ -17,7 +17,7 @@
       </StackPanel>
       <StackPanel Orientation="Vertical"
                   HorizontalAlignment="Center"
-                  Gap="16">
+                  Spacing="16">
         <CheckBox IsChecked="False" IsThreeState="True">Three State: Unchecked</CheckBox>
         <CheckBox IsChecked="True" IsThreeState="True">Three State: Checked</CheckBox>
         <CheckBox IsChecked="{x:Null}" IsThreeState="True">Three State: Indeterminate</CheckBox>
@@ -25,4 +25,4 @@
       </StackPanel>
     </StackPanel>
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/ContextMenuPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-    <StackPanel Orientation="Vertical" Gap="4">
+    <StackPanel Orientation="Vertical" Spacing="4">
         <TextBlock Classes="h1">Context Menu</TextBlock>
         <TextBlock Classes="h2">A right click menu that can be applied to any control.</TextBlock>
 
         <StackPanel Orientation="Horizontal"
               Margin="0,16,0,0"
               HorizontalAlignment="Center"
-              Gap="16">
+              Spacing="16">
             <Border Background="{DynamicResource ThemeAccentBrush}"
               Padding="48,48,48,48">
                 <Border.ContextMenu>
@@ -33,4 +33,4 @@
             </Border>
         </StackPanel>
     </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/DatePickerPage.xaml

@@ -1,13 +1,13 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">DatePicker</TextBlock>
     <TextBlock Classes="h2">A control for selecting dates with a calendar drop-down</TextBlock>
         
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <StackPanel Orientation="Vertical"
                   Width="200">
         <TextBlock Text="SelectedDateFormat: Short"/>
@@ -43,4 +43,4 @@
 
     </StackPanel> 
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/DialogsPage.xaml

@@ -1,5 +1,5 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4" Margin="4">
+  <StackPanel Orientation="Vertical" Spacing="4" Margin="4">
       <Button Name="OpenFile">Open File</Button>
       <Button Name="SaveFile">Save File</Button>
       <Button Name="SelectFolder">Select Folder</Button>
@@ -9,4 +9,4 @@
       </StackPanel>
       <Button Name="DecoratedWindow">Decorated window</Button>
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/DragAndDropPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-    <StackPanel Orientation="Vertical" Gap="4">
+    <StackPanel Orientation="Vertical" Spacing="4">
         <TextBlock Classes="h1">Drag+Drop</TextBlock>
         <TextBlock Classes="h2">Example of Drag+Drop capabilities</TextBlock>
 
         <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
             <Border BorderBrush="{DynamicResource ThemeAccentBrush}" BorderThickness="2" Padding="16" Name="DragMe">
                 <TextBlock Name="DragState">Drag Me</TextBlock>
             </Border>
@@ -16,4 +16,4 @@
             </Border>
         </StackPanel>
     </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/DropDownPage.xaml

@@ -1,9 +1,9 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">DropDown</TextBlock>
     <TextBlock Classes="h2">A drop-down list.</TextBlock>
 
-    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Gap="8">
+    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Spacing="8">
       <DropDown SelectedIndex="0">
         <DropDownItem>Inline Items</DropDownItem>
         <DropDownItem>Inline Item 2</DropDownItem>
@@ -28,4 +28,4 @@
     </StackPanel>
 
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/ExpanderPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Expander</TextBlock>
     <TextBlock Classes="h2">Expands to show nested content</TextBlock>
 
     <StackPanel Orientation="Vertical"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <Expander Header="Expand Up" ExpandDirection="Up">
         <StackPanel>
           <TextBlock>Expanded content</TextBlock>
@@ -29,4 +29,4 @@
       </Expander>
     </StackPanel>    
   </StackPanel>
-</UserControl>
+</UserControl>

samples/ControlCatalog/Pages/ImagePage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Image</TextBlock>
     <TextBlock Classes="h2">Displays an image</TextBlock>
 
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <StackPanel Orientation="Vertical">
         <TextBlock>No Stretch</TextBlock>
         <Image Source="resm:ControlCatalog.Assets.delicate-arch-896885_640.jpg"

samples/ControlCatalog/Pages/MenuPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Menu</TextBlock>
     <TextBlock Classes="h2">A window menu</TextBlock>
 
         <StackPanel Orientation="Horizontal"
               Margin="0,16,0,0"
               HorizontalAlignment="Center"
-              Gap="16">
+              Spacing="16">
             <Menu>
                 <MenuItem Header="_First">
                     <MenuItem Header="Standard _Menu Item"/>

samples/ControlCatalog/Pages/NumericUpDownPage.xaml

@@ -1,6 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Margin="2" Classes="h1">Numeric up-down control</TextBlock>
     <TextBlock Margin="2" Classes="h2" TextWrapping="Wrap">Numeric up-down control provides a TextBox with button spinners that allow incrementing and decrementing numeric values by using the spinner buttons, keyboard up/down arrows, or mouse wheel.</TextBlock>
 
@@ -26,7 +26,7 @@
                   VerticalAlignment="Center" Margin="2">
           <DropDown.ItemTemplate>
             <DataTemplate>
-              <StackPanel Orientation="Horizontal" Gap="2">
+              <StackPanel Orientation="Horizontal" Spacing="2">
                 <TextBlock Text="{Binding Name}"/>
                 <TextBlock Text="-"/>
                 <TextBlock Text="{Binding Value}"/>
@@ -69,7 +69,7 @@
       </Grid>
     </Grid>
 
-    <StackPanel Margin="2,10,2,2" Orientation="Horizontal" Gap="10">
+    <StackPanel Margin="2,10,2,2" Orientation="Horizontal" Spacing="10">
       <TextBlock FontSize="14" FontWeight="Bold" VerticalAlignment="Center">Usage of NumericUpDown:</TextBlock>
       <NumericUpDown Name="upDown" Minimum="0" Maximum="10" Increment="0.5"
                      CultureInfo="en-US" VerticalAlignment="Center" Height="25" Width="100"

samples/ControlCatalog/Pages/ProgressBarPage.xaml

@@ -1,5 +1,5 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">ProgressBar</TextBlock>
     <TextBlock Classes="h2">A progress bar control</TextBlock>
 
@@ -7,8 +7,8 @@
       <StackPanel Orientation="Horizontal"
                   Margin="0,16,0,0"
                   HorizontalAlignment="Center"
-                  Gap="16">
+                  Spacing="16">
-        <StackPanel Gap="16">
+        <StackPanel Spacing="16">
           <ProgressBar Value="{Binding #hprogress.Value}" />
           <ProgressBar IsIndeterminate="True"/>
         </StackPanel>

samples/ControlCatalog/Pages/RadioButtonPage.xaml

@@ -1,22 +1,22 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">RadioButton</TextBlock>
     <TextBlock Classes="h2">Allows the selection of a single option of many</TextBlock>
 
     <StackPanel Orientation="Horizontal"
                 Margin="0,16,0,0"
                 HorizontalAlignment="Center"
-                Gap="16">
+                Spacing="16">
       <StackPanel Orientation="Vertical"
-                  Gap="16">
+                  Spacing="16">
         <RadioButton IsChecked="True">Option 1</RadioButton>
         <RadioButton>Option 2</RadioButton>
         <RadioButton IsChecked="{x:Null}">Option 3</RadioButton>
         <RadioButton IsEnabled="False">Disabled</RadioButton>
       </StackPanel>
       <StackPanel Orientation="Vertical"
-                  Gap="16">
+                  Spacing="16">
         <RadioButton IsChecked="True" IsThreeState="True">Three States: Option 1</RadioButton>
         <RadioButton IsChecked="False" IsThreeState="True">Three States: Option 2</RadioButton>
         <RadioButton IsChecked="{x:Null}" IsThreeState="True">Three States: Option 3</RadioButton>

samples/ControlCatalog/Pages/SliderPage.xaml

@@ -1,9 +1,9 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">Slider</TextBlock>
     <TextBlock Classes="h2">A control that lets the user select from a range of values by moving a Thumb control along a Track.</TextBlock>
 
-    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Gap="16">
+    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Spacing="16">
       <Slider Value="0"
               Minimum="0"
               Maximum="100"

samples/ControlCatalog/Pages/TextBoxPage.xaml

@@ -1,13 +1,13 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">TextBox</TextBlock>
     <TextBlock Classes="h2">A control into which the user can input text</TextBlock>
 
     <StackPanel Orientation="Horizontal"
               Margin="0,16,0,0"
               HorizontalAlignment="Center"
-              Gap="16">
+              Spacing="16">
-      <StackPanel Orientation="Vertical" Gap="8">
+      <StackPanel Orientation="Vertical" Spacing="8">
         <TextBox Text="Lorem ipsum dolor sit amet, consectetur adipiscing elit." Width="200" />
         <TextBox Watermark="ReadOnly" IsReadOnly="True" Text="This is read only"/>
         <TextBox Width="200" Watermark="Watermark" />
@@ -26,13 +26,13 @@
         <TextBox Width="200" Text="Right aligned text" TextAlignment="Right" />
       </StackPanel>
 
-      <StackPanel Orientation="Vertical" Gap="8">
+      <StackPanel Orientation="Vertical" Spacing="8">
         <TextBox AcceptsReturn="True" TextWrapping="Wrap" Width="200" Height="125"
                  Text="Multiline TextBox with TextWrapping.&#xD;&#xD;Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus magna. Cras in mi at felis aliquet congue. Ut a est eget ligula molestie gravida. Curabitur massa. Donec eleifend, libero at sagittis mollis, tellus est malesuada tellus, at luctus turpis elit sit amet quam. Vivamus pretium ornare est." />
         <TextBox AcceptsReturn="True" Width="200" Height="125"
                  Text="Multiline TextBox with no TextWrapping.&#xD;&#xD;Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus magna. Cras in mi at felis aliquet congue. Ut a est eget ligula molestie gravida. Curabitur massa. Donec eleifend, libero at sagittis mollis, tellus est malesuada tellus, at luctus turpis elit sit amet quam. Vivamus pretium ornare est." />
       </StackPanel>
-        <StackPanel Orientation="Vertical" Gap="8">
+        <StackPanel Orientation="Vertical" Spacing="8">
             <TextBox Width="200" Text="Custom font regular" FontWeight="Normal" FontStyle="Normal" FontFamily="resm:ControlCatalog.Assets.Fonts?assembly=ControlCatalog#Source Sans Pro"/>
                 <TextBox Width="200" Text="Custom font bold" FontWeight="Bold" FontStyle="Normal" FontFamily="resm:ControlCatalog.Assets.Fonts?assembly=ControlCatalog#Source Sans Pro"/>
                 <TextBox Width="200" Text="Custom font italic" FontWeight="Normal" FontStyle="Italic" FontFamily="resm:ControlCatalog.Assets.Fonts.SourceSansPro-Italic.ttf?assembly=ControlCatalog#Source Sans Pro"/>

samples/ControlCatalog/Pages/ToolTipPage.xaml

@@ -1,6 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui">
     <StackPanel Orientation="Vertical"
-                Gap="4">
+                Spacing="4">
         <TextBlock Classes="h1">ToolTip</TextBlock>
         <TextBlock Classes="h2">A control which pops up a hint when a control is hovered</TextBlock>
 

samples/ControlCatalog/Pages/TreeViewPage.xaml

@@ -1,12 +1,12 @@
 <UserControl xmlns="https://github.com/avaloniaui">
-  <StackPanel Orientation="Vertical" Gap="4">
+  <StackPanel Orientation="Vertical" Spacing="4">
     <TextBlock Classes="h1">TreeView</TextBlock>
     <TextBlock Classes="h2">Displays a hierachical tree of data.</TextBlock>
 
     <StackPanel Orientation="Horizontal"
               Margin="0,16,0,0"
               HorizontalAlignment="Center"
-              Gap="16">
+              Spacing="16">
       <TreeView Items="{Binding}" Width="250" Height="350">
         <TreeView.ItemTemplate>
           <TreeDataTemplate ItemsSource="{Binding Children}">

samples/VirtualizationDemo/MainWindow.xaml

@@ -6,7 +6,7 @@
         <StackPanel DockPanel.Dock="Right" 
                     Margin="16 0 0 0" 
                     MinWidth="150"
-                    Gap="4">
+                    Spacing="4">
             <DropDown Items="{Binding VirtualizationModes}"
                       SelectedItem="{Binding VirtualizationMode}"/>
             <DropDown Items="{Binding Orientations}"

src/Avalonia.Controls/Image.cs

@@ -1,12 +1,11 @@
 // 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 System;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
 
 namespace Avalonia.Controls
-{
+{   
     /// <summary>
     /// Displays a <see cref="Bitmap"/> image.
     /// </summary>
@@ -68,7 +67,9 @@ namespace Avalonia.Controls
                 Rect sourceRect = new Rect(sourceSize)
                     .CenterRect(new Rect(destRect.Size / scale));
 
-                context.DrawImage(source, 1, sourceRect, destRect);
+                var interpolationMode = RenderOptions.GetBitmapInterpolationMode(this);
+
+                context.DrawImage(source, 1, sourceRect, destRect, interpolationMode);
             }
         }
 
@@ -100,4 +101,4 @@ namespace Avalonia.Controls
             }
         }
     }
-}
+}

src/Avalonia.Controls/StackPanel.cs

@@ -13,10 +13,10 @@ namespace Avalonia.Controls
     public class StackPanel : Panel, INavigableContainer
     {
         /// <summary>
-        /// Defines the <see cref="Gap"/> property.
+        /// Defines the <see cref="Spacing"/> property.
         /// </summary>
-        public static readonly StyledProperty<double> GapProperty =
+        public static readonly StyledProperty<double> SpacingProperty =
-            AvaloniaProperty.Register<StackPanel, double>(nameof(Gap));
+            AvaloniaProperty.Register<StackPanel, double>(nameof(Spacing));
 
         /// <summary>
         /// Defines the <see cref="Orientation"/> property.
@@ -29,17 +29,17 @@ namespace Avalonia.Controls
         /// </summary>
         static StackPanel()
         {
-            AffectsMeasure(GapProperty);
+            AffectsMeasure(SpacingProperty);
             AffectsMeasure(OrientationProperty);
         }
 
         /// <summary>
-        /// Gets or sets the size of the gap to place between child controls.
+        /// Gets or sets the size of the spacing to place between child controls.
         /// </summary>
-        public double Gap
+        public double Spacing
         {
-            get { return GetValue(GapProperty); }
+            get { return GetValue(SpacingProperty); }
-            set { SetValue(GapProperty, value); }
+            set { SetValue(SpacingProperty, value); }
         }
 
         /// <summary>
@@ -152,7 +152,7 @@ namespace Avalonia.Controls
 
             double measuredWidth = 0;
             double measuredHeight = 0;
-            double gap = Gap;
+            double spacing = Spacing;
             bool hasVisibleChild = Children.Any(c => c.IsVisible);
 
             foreach (Control child in Children)
@@ -162,23 +162,23 @@ namespace Avalonia.Controls
 
                 if (Orientation == Orientation.Vertical)
                 {
-                    measuredHeight += size.Height + (child.IsVisible ? gap : 0);
+                    measuredHeight += size.Height + (child.IsVisible ? spacing : 0);
                     measuredWidth = Math.Max(measuredWidth, size.Width);
                 }
                 else
                 {
-                    measuredWidth += size.Width + (child.IsVisible ? gap : 0);   
+                    measuredWidth += size.Width + (child.IsVisible ? spacing : 0);   
                     measuredHeight = Math.Max(measuredHeight, size.Height);
                 }
             }
 
             if (Orientation == Orientation.Vertical)
             {
-                measuredHeight -= (hasVisibleChild ? gap : 0);
+                measuredHeight -= (hasVisibleChild ? spacing : 0);
             }
             else
             {
-                measuredWidth -= (hasVisibleChild ? gap : 0);
+                measuredWidth -= (hasVisibleChild ? spacing : 0);
             }
 
             return new Size(measuredWidth, measuredHeight);
@@ -194,7 +194,7 @@ namespace Avalonia.Controls
             var orientation = Orientation;
             double arrangedWidth = finalSize.Width;
             double arrangedHeight = finalSize.Height;
-            double gap = Gap;
+            double spacing = Spacing;
             bool hasVisibleChild = Children.Any(c => c.IsVisible);
 
             if (Orientation == Orientation.Vertical)
@@ -217,25 +217,25 @@ namespace Avalonia.Controls
                     Rect childFinal = new Rect(0, arrangedHeight, width, childHeight);
                     ArrangeChild(child, childFinal, finalSize, orientation);
                     arrangedWidth = Math.Max(arrangedWidth, childWidth);
-                    arrangedHeight += childHeight + (child.IsVisible ? gap : 0);
+                    arrangedHeight += childHeight + (child.IsVisible ? spacing : 0);
                 }
                 else
                 {
                     double height = Math.Max(childHeight, arrangedHeight);
                     Rect childFinal = new Rect(arrangedWidth, 0, childWidth, height);
                     ArrangeChild(child, childFinal, finalSize, orientation);
-                    arrangedWidth += childWidth + (child.IsVisible ? gap : 0);
+                    arrangedWidth += childWidth + (child.IsVisible ? spacing : 0);
                     arrangedHeight = Math.Max(arrangedHeight, childHeight);
                 }
             }
 
             if (orientation == Orientation.Vertical)
             {
-                arrangedHeight = Math.Max(arrangedHeight - (hasVisibleChild ? gap : 0), finalSize.Height);
+                arrangedHeight = Math.Max(arrangedHeight - (hasVisibleChild ? spacing : 0), finalSize.Height);
             }
             else
             {
-                arrangedWidth = Math.Max(arrangedWidth - (hasVisibleChild ? gap : 0), finalSize.Width);
+                arrangedWidth = Math.Max(arrangedWidth - (hasVisibleChild ? spacing : 0), finalSize.Width);
             }
 
             return new Size(arrangedWidth, arrangedHeight);
@@ -250,4 +250,4 @@ namespace Avalonia.Controls
             child.Arrange(rect);
         }
     }
-}
+}

src/Avalonia.Controls/VirtualizingStackPanel.cs

@@ -200,7 +200,7 @@ namespace Avalonia.Controls
         private void UpdateAdd(IControl child)
         {
             var bounds = Bounds;
-            var gap = Gap;
+            var spacing = Spacing;
 
             child.Measure(_availableSpace);
             ++_averageCount;
@@ -208,13 +208,13 @@ namespace Avalonia.Controls
             if (Orientation == Orientation.Vertical)
             {
                 var height = child.DesiredSize.Height;
-                _takenSpace += height + gap;
+                _takenSpace += height + spacing;
                 AddToAverageItemSize(height);
             }
             else
             {
                 var width = child.DesiredSize.Width;
-                _takenSpace += width + gap;
+                _takenSpace += width + spacing;
                 AddToAverageItemSize(width);
             }
         }
@@ -222,18 +222,18 @@ namespace Avalonia.Controls
         private void UpdateRemove(IControl child)
         {
             var bounds = Bounds;
-            var gap = Gap;
+            var spacing = Spacing;
 
             if (Orientation == Orientation.Vertical)
             {
                 var height = child.DesiredSize.Height;
-                _takenSpace -= height + gap;
+                _takenSpace -= height + spacing;
                 RemoveFromAverageItemSize(height);
             }
             else
             {
                 var width = child.DesiredSize.Width;
-                _takenSpace -= width + gap;
+                _takenSpace -= width + spacing;
                 RemoveFromAverageItemSize(width);
             }
 

src/Avalonia.Controls/WindowCollection.cs

@@ -96,7 +96,7 @@ namespace Avalonia
         {
             while (_windows.Count > 0)
             {
-                _windows[0].Close();
+                _windows[0].Close(true);
             }
         }
 
@@ -131,4 +131,4 @@ namespace Avalonia
             }
         }
     }
-}
+}

src/Avalonia.DesignerSupport/Avalonia.DesignerSupport.csproj

@@ -1,7 +1,12 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <!-- WARNING! The designer support version number needs to be frozen 
+         To allow projects that implement designer functionality to still
+         work with newer versions of Avalonia. This version number only
+         need change when there are breaking changes to designer support api.
+    -->
+    <Version>0.7.0</Version>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
     <DebugSymbols>true</DebugSymbols>
@@ -37,11 +42,6 @@
     <ProjectReference Include="..\Avalonia.Styling\Avalonia.Styling.csproj" />
     <ProjectReference Include="..\Avalonia.Themes.Default\Avalonia.Themes.Default.csproj" />
   </ItemGroup>
-  <ItemGroup>
-    <Compile Include="..\Shared\SharedAssemblyInfo.cs">
-      <Link>Properties\SharedAssemblyInfo.cs</Link>
-    </Compile>
-  </ItemGroup>
   <Import Project="..\..\build\Microsoft.CSharp.props" />
   <Import Project="..\..\build\Rx.props" />
 </Project>

src/Avalonia.Diagnostics/DevTools.xaml

@@ -7,7 +7,7 @@
 
     <ContentControl Content="{Binding Content}" Grid.Row="1"/> 
     
-    <StackPanel Gap="4" Orientation="Horizontal" Grid.Row="2">
+    <StackPanel Spacing="4" Orientation="Horizontal" Grid.Row="2">
       <TextBlock>Hold Ctrl+Shift over a control to inspect.</TextBlock>
       <Separator Width="8"/>
       <TextBlock>Focused:</TextBlock>
@@ -17,4 +17,4 @@
       <TextBlock Text="{Binding PointerOverElement}"/>
     </StackPanel>
   </Grid>
-</UserControl>
+</UserControl>

src/Avalonia.Diagnostics/Views/TreePageView.xaml

@@ -5,7 +5,7 @@
       <TreeView.DataTemplates>
         <TreeDataTemplate DataType="vm:TreeNode"
                           ItemsSource="{Binding Children}">
-          <StackPanel Orientation="Horizontal" Gap="8">
+          <StackPanel Orientation="Horizontal" Spacing="8">
             <TextBlock Text="{Binding Type}"/>
             <TextBlock Text="{Binding Classes}"/>
           </StackPanel>
@@ -21,4 +21,4 @@
     <GridSplitter Width="4" Grid.Column="1"/>
     <ContentControl Content="{Binding Details}" Grid.Column="2"/>
   </Grid>
-</UserControl>
+</UserControl>

src/Avalonia.Visuals/Media/DrawingContext.cs

@@ -2,9 +2,10 @@ using System;
 using System.Collections.Generic;
 using Avalonia.Media.Imaging;
 using Avalonia.Platform;
+using Avalonia.Visuals.Media.Imaging;
 
 namespace Avalonia.Media
-{
+{   
     public sealed class DrawingContext : IDisposable
     {
         private int _currentLevel;
@@ -68,11 +69,12 @@ namespace Avalonia.Media
         /// <param name="opacity">The opacity to draw with.</param>
         /// <param name="sourceRect">The rect in the image to draw.</param>
         /// <param name="destRect">The rect in the output to draw to.</param>
-        public void DrawImage(IBitmap source, double opacity, Rect sourceRect, Rect destRect)
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
+        public void DrawImage(IBitmap source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode = default)
         {
             Contract.Requires<ArgumentNullException>(source != null);
 
-            PlatformImpl.DrawImage(source.PlatformImpl, opacity, sourceRect, destRect);
+            PlatformImpl.DrawImage(source.PlatformImpl, opacity, sourceRect, destRect, bitmapInterpolationMode);
         }
 
         /// <summary>
@@ -309,4 +311,4 @@ namespace Avalonia.Media
             return pen?.Brush != null && pen.Thickness > 0;
         }
     }
-}
+}

src/Avalonia.Visuals/Media/ITileBrush.cs

@@ -1,5 +1,10 @@
-namespace Avalonia.Media
+// 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.Visuals.Media.Imaging;
+
+namespace Avalonia.Media
+{  
     /// <summary>
     /// A brush which displays a repeating image.
     /// </summary>
@@ -35,5 +40,13 @@
         /// Gets the brush's tile mode.
         /// </summary>
         TileMode TileMode { get; }
+
+        /// <summary>
+        /// Gets the bitmap interpolation mode.
+        /// </summary>
+        /// <value>
+        /// The bitmap interpolation mode.
+        /// </value>
+        BitmapInterpolationMode BitmapInterpolationMode { get; }
     }
-}
+}

src/Avalonia.Visuals/Media/Imaging/BitmapInterpolationMode.cs

@@ -0,0 +1,31 @@
+// 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.Visuals.Media.Imaging
+{
+    /// <summary>
+    /// Controls the performance and quality of bitmap scaling.
+    /// </summary>
+    public enum BitmapInterpolationMode
+    {
+        /// <summary>
+        /// Uses the default behavior of the underling render backend.
+        /// </summary>
+        Default,
+
+        /// <summary>
+        /// The best performance but worst image quality.
+        /// </summary>
+        LowQuality,
+
+        /// <summary>
+        /// Good performance and decent image quality.
+        /// </summary>
+        MediumQuality,      
+
+        /// <summary>
+        /// Highest quality but worst performance.
+        /// </summary>
+        HighQuality
+    }
+}

src/Avalonia.Visuals/Media/Immutable/ImmutableImageBrush.cs

@@ -1,5 +1,5 @@
-using System;
+using Avalonia.Media.Imaging;
-using Avalonia.Media.Imaging;
+using Avalonia.Visuals.Media.Imaging;
 
 namespace Avalonia.Media.Immutable
 {
@@ -21,6 +21,7 @@ namespace Avalonia.Media.Immutable
         /// How the source rectangle will be stretched to fill the destination rect.
         /// </param>
         /// <param name="tileMode">The tile mode.</param>
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
         public ImmutableImageBrush(
             IBitmap source,
             AlignmentX alignmentX = AlignmentX.Center,
@@ -29,7 +30,8 @@ namespace Avalonia.Media.Immutable
             double opacity = 1,
             RelativeRect? sourceRect = null,
             Stretch stretch = Stretch.Uniform,
-            TileMode tileMode = TileMode.None)
+            TileMode tileMode = TileMode.None,
+            BitmapInterpolationMode bitmapInterpolationMode = BitmapInterpolationMode.Default)
             : base(
                   alignmentX,
                   alignmentY,
@@ -37,7 +39,8 @@ namespace Avalonia.Media.Immutable
                   opacity,
                   sourceRect ?? RelativeRect.Fill,
                   stretch,
-                  tileMode)
+                  tileMode,
+                  bitmapInterpolationMode)
         {
             Source = source;
         }

src/Avalonia.Visuals/Media/Immutable/ImmutableTileBrush.cs

@@ -1,4 +1,7 @@
-using System;
+// 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.Visuals.Media.Imaging;
 
 namespace Avalonia.Media.Immutable
 {
@@ -19,6 +22,7 @@ namespace Avalonia.Media.Immutable
         /// How the source rectangle will be stretched to fill the destination rect.
         /// </param>
         /// <param name="tileMode">The tile mode.</param>
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
         protected ImmutableTileBrush(
             AlignmentX alignmentX,
             AlignmentY alignmentY,
@@ -26,7 +30,8 @@ namespace Avalonia.Media.Immutable
             double opacity,
             RelativeRect sourceRect,
             Stretch stretch,
-            TileMode tileMode)
+            TileMode tileMode,
+            BitmapInterpolationMode bitmapInterpolationMode)
         {
             AlignmentX = alignmentX;
             AlignmentY = alignmentY;
@@ -35,6 +40,7 @@ namespace Avalonia.Media.Immutable
             SourceRect = sourceRect;
             Stretch = stretch;
             TileMode = tileMode;
+            BitmapInterpolationMode = bitmapInterpolationMode;
         }
 
         /// <summary>
@@ -49,7 +55,8 @@ namespace Avalonia.Media.Immutable
                   source.Opacity,
                   source.SourceRect,
                   source.Stretch,
-                  source.TileMode)
+                  source.TileMode,
+                  source.BitmapInterpolationMode)
         {
         }
 
@@ -73,5 +80,8 @@ namespace Avalonia.Media.Immutable
 
         /// <inheritdoc/>
         public TileMode TileMode { get; }
+
+        /// <inheritdoc/>
+        public BitmapInterpolationMode BitmapInterpolationMode { get; }
     }
 }

src/Avalonia.Visuals/Media/Immutable/ImmutableVisualBrush.cs

@@ -1,4 +1,7 @@
-using System;
+// 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.Visuals.Media.Imaging;
 using Avalonia.VisualTree;
 
 namespace Avalonia.Media.Immutable
@@ -21,6 +24,7 @@ namespace Avalonia.Media.Immutable
         /// How the source rectangle will be stretched to fill the destination rect.
         /// </param>
         /// <param name="tileMode">The tile mode.</param>
+        /// <param name="bitmapInterpolationMode">Controls the quality of interpolation.</param>
         public ImmutableVisualBrush(
             IVisual visual,
             AlignmentX alignmentX = AlignmentX.Center,
@@ -29,7 +33,8 @@ namespace Avalonia.Media.Immutable
             double opacity = 1,
             RelativeRect? sourceRect = null,
             Stretch stretch = Stretch.Uniform,
-            TileMode tileMode = TileMode.None)
+            TileMode tileMode = TileMode.None,
+            BitmapInterpolationMode bitmapInterpolationMode = BitmapInterpolationMode.Default)
             : base(
                   alignmentX,
                   alignmentY,
@@ -37,7 +42,8 @@ namespace Avalonia.Media.Immutable
                   opacity,
                   sourceRect ?? RelativeRect.Fill,
                   stretch,
-                  tileMode)
+                  tileMode,
+                  bitmapInterpolationMode)
         {
             Visual = visual;
         }

src/Avalonia.Visuals/Media/RenderOptions.cs

@@ -0,0 +1,39 @@
+// 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.Visuals.Media.Imaging;
+
+namespace Avalonia.Media
+{ 
+    public class RenderOptions
+    {
+        /// <summary>
+        /// Defines the <see cref="BitmapInterpolationMode"/> property.
+        /// </summary>
+        public static readonly StyledProperty<BitmapInterpolationMode> BitmapInterpolationModeProperty =
+            AvaloniaProperty.RegisterAttached<RenderOptions, AvaloniaObject, BitmapInterpolationMode>(
+                "BitmapInterpolationMode", 
+                BitmapInterpolationMode.MediumQuality,
+                inherits: true);
+
+        /// <summary>
+        /// Gets the value of the BitmapInterpolationMode attached property for a control.
+        /// </summary>
+        /// <param name="element">The control.</param>
+        /// <returns>The control's left coordinate.</returns>
+        public static BitmapInterpolationMode GetBitmapInterpolationMode(AvaloniaObject element)
+        {
+            return element.GetValue(BitmapInterpolationModeProperty);
+        }
+
+        /// <summary>
+        /// Sets the value of the BitmapInterpolationMode attached property for a control.
+        /// </summary>
+        /// <param name="element">The control.</param>
+        /// <param name="value">The left value.</param>
+        public static void SetBitmapInterpolationMode(AvaloniaObject element, BitmapInterpolationMode value)
+        {
+            element.SetValue(BitmapInterpolationModeProperty, value);
+        }
+    }
+}

src/Avalonia.Visuals/Media/TileBrush.cs

@@ -1,6 +1,8 @@
 // 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.Visuals.Media.Imaging;
+
 namespace Avalonia.Media
 {
     /// <summary>
@@ -75,6 +77,11 @@ namespace Avalonia.Media
         public static readonly StyledProperty<TileMode> TileModeProperty =
             AvaloniaProperty.Register<TileBrush, TileMode>(nameof(TileMode));
 
+        static TileBrush()
+        {
+            RenderOptions.BitmapInterpolationModeProperty.OverrideDefaultValue<TileBrush>(BitmapInterpolationMode.Default);
+        }
+
         /// <summary>
         /// Gets or sets the horizontal alignment of a tile in the destination.
         /// </summary>
@@ -129,5 +136,17 @@ namespace Avalonia.Media
             get { return (TileMode)GetValue(TileModeProperty); }
             set { SetValue(TileModeProperty, value); }
         }
+
+        /// <summary>
+        /// Gets or sets the bitmap interpolation mode.
+        /// </summary>
+        /// <value>
+        /// The bitmap interpolation mode.
+        /// </value>
+        public BitmapInterpolationMode BitmapInterpolationMode
+        {
+            get { return RenderOptions.GetBitmapInterpolationMode(this); }
+            set { RenderOptions.SetBitmapInterpolationMode(this, value); }
+        }
     }
 }

src/Avalonia.Visuals/Platform/IDrawingContextImpl.cs

@@ -4,6 +4,7 @@
 using System;
 using Avalonia.Media;
 using Avalonia.Utilities;
+using Avalonia.Visuals.Media.Imaging;
 
 namespace Avalonia.Platform
 {
@@ -30,7 +31,8 @@ namespace Avalonia.Platform
         /// <param name="opacity">The opacity to draw with.</param>
         /// <param name="sourceRect">The rect in the image to draw.</param>
         /// <param name="destRect">The rect in the output to draw to.</param>
-        void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect);
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
+        void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode = BitmapInterpolationMode.Default);
 
         /// <summary>
         /// Draws a bitmap image.

src/Avalonia.Visuals/Rendering/SceneGraph/DeferredDrawingContextImpl.cs

@@ -7,6 +7,7 @@ using Avalonia.Media;
 using Avalonia.Platform;
 using Avalonia.Utilities;
 using Avalonia.VisualTree;
+using Avalonia.Visuals.Media.Imaging;
 
 namespace Avalonia.Rendering.SceneGraph
 {
@@ -114,13 +115,13 @@ namespace Avalonia.Rendering.SceneGraph
         }
 
         /// <inheritdoc/>
-        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
+        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
         {
             var next = NextDrawAs<ImageNode>();
 
-            if (next == null || !next.Item.Equals(Transform, source, opacity, sourceRect, destRect))
+            if (next == null || !next.Item.Equals(Transform, source, opacity, sourceRect, destRect, bitmapInterpolationMode))
             {
-                Add(new ImageNode(Transform, source, opacity, sourceRect, destRect));
+                Add(new ImageNode(Transform, source, opacity, sourceRect, destRect, bitmapInterpolationMode));
             }
             else
             {

src/Avalonia.Visuals/Rendering/SceneGraph/ImageNode.cs

@@ -4,6 +4,7 @@
 using System;
 using Avalonia.Platform;
 using Avalonia.Utilities;
+using Avalonia.Visuals.Media.Imaging;
 
 namespace Avalonia.Rendering.SceneGraph
 {
@@ -20,7 +21,8 @@ namespace Avalonia.Rendering.SceneGraph
         /// <param name="opacity">The draw opacity.</param>
         /// <param name="sourceRect">The source rect.</param>
         /// <param name="destRect">The destination rect.</param>
-        public ImageNode(Matrix transform, IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
+        public ImageNode(Matrix transform, IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
             : base(destRect, transform, null)
         {
             Transform = transform;
@@ -28,7 +30,8 @@ namespace Avalonia.Rendering.SceneGraph
             Opacity = opacity;
             SourceRect = sourceRect;
             DestRect = destRect;
-        }
+            BitmapInterpolationMode = bitmapInterpolationMode;
+        }        
 
         /// <summary>
         /// Gets the transform with which the node will be drawn.
@@ -55,6 +58,14 @@ namespace Avalonia.Rendering.SceneGraph
         /// </summary>
         public Rect DestRect { get; }
 
+        /// <summary>
+        /// Gets the bitmap interpolation mode.
+        /// </summary>
+        /// <value>
+        /// The scaling mode.
+        /// </value>
+        public BitmapInterpolationMode BitmapInterpolationMode { get; }
+
         /// <summary>
         /// Determines if this draw operation equals another.
         /// </summary>
@@ -63,18 +74,20 @@ namespace Avalonia.Rendering.SceneGraph
         /// <param name="opacity">The opacity of the other draw operation.</param>
         /// <param name="sourceRect">The source rect of the other draw operation.</param>
         /// <param name="destRect">The dest rect of the other draw operation.</param>
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
         /// <returns>True if the draw operations are the same, otherwise false.</returns>
         /// <remarks>
         /// The properties of the other draw operation are passed in as arguments to prevent
         /// allocation of a not-yet-constructed draw operation object.
         /// </remarks>
-        public bool Equals(Matrix transform, IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
+        public bool Equals(Matrix transform, IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
         {
             return transform == Transform &&
                 Equals(source.Item, Source.Item) &&
                 opacity == Opacity &&
                 sourceRect == SourceRect &&
-                destRect == DestRect;
+                destRect == DestRect &&
+                bitmapInterpolationMode == BitmapInterpolationMode;
         }
 
         /// <inheritdoc/>
@@ -83,7 +96,7 @@ namespace Avalonia.Rendering.SceneGraph
             // TODO: Probably need to introduce some kind of locking mechanism in the case of
             // WriteableBitmap.
             context.Transform = Transform;
-            context.DrawImage(Source, Opacity, SourceRect, DestRect);
+            context.DrawImage(Source, Opacity, SourceRect, DestRect, BitmapInterpolationMode);
         }
 
         /// <inheritdoc/>

src/Skia/Avalonia.Skia/DrawingContextImpl.cs

@@ -10,6 +10,7 @@ using Avalonia.Platform;
 using Avalonia.Rendering;
 using Avalonia.Rendering.Utilities;
 using Avalonia.Utilities;
+using Avalonia.Visuals.Media.Imaging;
 using SkiaSharp;
 
 namespace Avalonia.Skia
@@ -95,24 +96,46 @@ namespace Avalonia.Skia
         }
 
         /// <inheritdoc />
-        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
+        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
         {
-            var drawableImage = (IDrawableBitmapImpl) source.Item;
+            var drawableImage = (IDrawableBitmapImpl)source.Item;
             var s = sourceRect.ToSKRect();
             var d = destRect.ToSKRect();
 
             using (var paint =
-                new SKPaint {Color = new SKColor(255, 255, 255, (byte) (255 * opacity * _currentOpacity))})
+                new SKPaint
+                {
+                    Color = new SKColor(255, 255, 255, (byte)(255 * opacity * _currentOpacity))
+                })
             {
+                paint.FilterQuality = GetInterpolationMode(bitmapInterpolationMode);
+
                 drawableImage.Draw(this, s, d, paint);
             }
         }
 
+        private static SKFilterQuality GetInterpolationMode(BitmapInterpolationMode interpolationMode)
+        {
+            switch (interpolationMode)
+            {
+                case BitmapInterpolationMode.LowQuality:
+                    return SKFilterQuality.Low;
+                case BitmapInterpolationMode.MediumQuality:
+                    return SKFilterQuality.Medium;
+                case BitmapInterpolationMode.HighQuality:
+                    return SKFilterQuality.High;
+                case BitmapInterpolationMode.Default:
+                    return SKFilterQuality.None;
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(interpolationMode), interpolationMode, null);
+            }
+        }
+
         /// <inheritdoc />
         public void DrawImage(IRef<IBitmapImpl> source, IBrush opacityMask, Rect opacityMaskRect, Rect destRect)
         {
             PushOpacityMask(opacityMask, opacityMaskRect);
-            DrawImage(source, 1, new Rect(0, 0, source.Item.PixelWidth, source.Item.PixelHeight), destRect);
+            DrawImage(source, 1, new Rect(0, 0, source.Item.PixelWidth, source.Item.PixelHeight), destRect, BitmapInterpolationMode.Default);
             PopOpacityMask();
         }
 
@@ -357,6 +380,7 @@ namespace Avalonia.Skia
         /// <param name="targetSize">Target size.</param>
         /// <param name="tileBrush">Tile brush to use.</param>
         /// <param name="tileBrushImage">Tile brush image.</param>
+        /// <param name="interpolationMode">The bitmap interpolation mode.</param>
         private void ConfigureTileBrush(ref PaintWrapper paintWrapper, Size targetSize, ITileBrush tileBrush, IDrawableBitmapImpl tileBrushImage)
         {
             var calc = new TileBrushCalculator(tileBrush,
@@ -375,7 +399,7 @@ namespace Avalonia.Skia
                 context.Clear(Colors.Transparent);
                 context.PushClip(calc.IntermediateClip);
                 context.Transform = calc.IntermediateTransform;
-                context.DrawImage(RefCountable.CreateUnownedNotClonable(tileBrushImage), 1, rect, rect);
+                context.DrawImage(RefCountable.CreateUnownedNotClonable(tileBrushImage), 1, rect, rect, tileBrush.BitmapInterpolationMode);
                 context.PopClip();
             }
 
@@ -484,7 +508,7 @@ namespace Avalonia.Skia
             }
             else
             {
-                tileBrushImage = (IDrawableBitmapImpl) (tileBrush as IImageBrush)?.Source?.PlatformImpl.Item;
+                tileBrushImage = (IDrawableBitmapImpl)(tileBrush as IImageBrush)?.Source?.PlatformImpl.Item;
             }
 
             if (tileBrush != null && tileBrushImage != null)
@@ -690,4 +714,4 @@ namespace Avalonia.Skia
             }
         }
     }
-}
+}

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

@@ -10,13 +10,14 @@ using Avalonia.Utilities;
 using SharpDX;
 using SharpDX.Direct2D1;
 using SharpDX.Mathematics.Interop;
+using BitmapInterpolationMode = Avalonia.Visuals.Media.Imaging.BitmapInterpolationMode;
 
 namespace Avalonia.Direct2D1.Media
 {
     /// <summary>
     /// Draws using Direct2D1.
     /// </summary>
-    public class DrawingContextImpl : IDrawingContextImpl, IDisposable
+    public class DrawingContextImpl : IDrawingContextImpl
     {
         private readonly IVisualBrushRenderer _visualBrushRenderer;
         private readonly ILayerFactory _layerFactory;
@@ -100,19 +101,37 @@ namespace Avalonia.Direct2D1.Media
         /// <param name="opacity">The opacity to draw with.</param>
         /// <param name="sourceRect">The rect in the image to draw.</param>
         /// <param name="destRect">The rect in the output to draw to.</param>
-        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect)
+        /// <param name="bitmapInterpolationMode">The bitmap interpolation mode.</param>
+        public void DrawImage(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode)
         {
             using (var d2d = ((BitmapImpl)source.Item).GetDirect2DBitmap(_renderTarget))
             {
+                var interpolationMode = GetInterpolationMode(bitmapInterpolationMode);
+
                 _renderTarget.DrawBitmap(
                     d2d.Value,
                     destRect.ToSharpDX(),
                     (float)opacity,
-                    BitmapInterpolationMode.Linear,
+                    interpolationMode,
                     sourceRect.ToSharpDX());
             }
         }
 
+        private static SharpDX.Direct2D1.BitmapInterpolationMode GetInterpolationMode(BitmapInterpolationMode interpolationMode)
+        {
+            switch (interpolationMode)
+            {
+                case BitmapInterpolationMode.LowQuality:
+                    return SharpDX.Direct2D1.BitmapInterpolationMode.NearestNeighbor;
+                case BitmapInterpolationMode.MediumQuality:
+                case BitmapInterpolationMode.HighQuality:
+                case BitmapInterpolationMode.Default:
+                    return SharpDX.Direct2D1.BitmapInterpolationMode.Linear;
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(interpolationMode), interpolationMode, null);
+            }
+        }
+
         /// <summary>
         /// Draws a bitmap image.
         /// </summary>

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

@@ -1,7 +1,6 @@
 // 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 System;
 using Avalonia.Media;
 using Avalonia.Rendering.Utilities;
 using Avalonia.Utilities;
@@ -11,7 +10,9 @@ namespace Avalonia.Direct2D1.Media
 {
     public sealed class ImageBrushImpl : BrushImpl
     {
-        OptionalDispose<Bitmap> _bitmap;
+        private readonly OptionalDispose<Bitmap> _bitmap;
+
+        private readonly Visuals.Media.Imaging.BitmapInterpolationMode _bitmapInterpolationMode;
 
         public ImageBrushImpl(
             ITileBrush brush,
@@ -41,6 +42,8 @@ namespace Avalonia.Direct2D1.Media
                         GetBrushProperties(brush, calc.DestinationRect));
                 }
             }
+
+            _bitmapInterpolationMode = brush.BitmapInterpolationMode;
         }
 
         public override void Dispose()
@@ -102,7 +105,7 @@ namespace Avalonia.Direct2D1.Media
                 context.PushClip(calc.IntermediateClip);
                 context.Transform = calc.IntermediateTransform;
                 
-                context.DrawImage(RefCountable.CreateUnownedNotClonable(bitmap), 1, rect, rect);
+                context.DrawImage(RefCountable.CreateUnownedNotClonable(bitmap), 1, rect, rect, _bitmapInterpolationMode);
                 context.PopClip();
             }
 

tests/Avalonia.Controls.UnitTests/StackPanelTests.cs

@@ -54,11 +54,11 @@ namespace Avalonia.Controls.UnitTests
         }
 
         [Fact]
-        public void Lays_Out_Children_Vertically_With_Gap()
+        public void Lays_Out_Children_Vertically_With_Spacing()
         {
             var target = new StackPanel
             {
-                Gap = 10,
+                Spacing = 10,
                 Children =
                 {
                     new Border { Height = 20, Width = 120 },
@@ -77,11 +77,11 @@ namespace Avalonia.Controls.UnitTests
         }
 
         [Fact]
-        public void Lays_Out_Children_Horizontally_With_Gap()
+        public void Lays_Out_Children_Horizontally_With_Spacing()
         {
             var target = new StackPanel
             {
-                Gap = 10,
+                Spacing = 10,
                 Orientation = Orientation.Horizontal,
                 Children =
                 {
@@ -150,11 +150,11 @@ namespace Avalonia.Controls.UnitTests
         [Theory]
         [InlineData(Orientation.Horizontal)]
         [InlineData(Orientation.Vertical)]
-        public void Gap_Not_Added_For_Invisible_Children(Orientation orientation)
+        public void Spacing_Not_Added_For_Invisible_Children(Orientation orientation)
         {
             var targetThreeChildrenOneInvisble = new StackPanel
             {
-                Gap = 40,
+                Spacing = 40,
                 Orientation = orientation,
                 Children =
                 {
@@ -165,7 +165,7 @@ namespace Avalonia.Controls.UnitTests
             };
             var targetTwoChildrenNoneInvisible = new StackPanel
             {
-                Gap = 40,
+                Spacing = 40,
                 Orientation = orientation,
                 Children =
                 {

tests/Avalonia.Visuals.UnitTests/Rendering/DeferredRendererTests.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reactive.Subjects;
+
 using Avalonia.Controls;
 using Avalonia.Data;
 using Avalonia.Media;
@@ -10,8 +11,11 @@ using Avalonia.Rendering;
 using Avalonia.Rendering.SceneGraph;
 using Avalonia.Threading;
 using Avalonia.UnitTests;
+using Avalonia.Visuals.Media.Imaging;
 using Avalonia.VisualTree;
+
 using Moq;
+
 using Xunit;
 
 namespace Avalonia.Visuals.UnitTests.Rendering
@@ -336,7 +340,7 @@ namespace Avalonia.Visuals.UnitTests.Rendering
             var context = Mock.Get(target.RenderTarget.CreateDrawingContext(null));
             var borderLayer = target.Layers[border].Bitmap;
 
-            context.Verify(x => x.DrawImage(borderLayer, 0.5, It.IsAny<Rect>(), It.IsAny<Rect>()));
+            context.Verify(x => x.DrawImage(borderLayer, 0.5, It.IsAny<Rect>(), It.IsAny<Rect>(), BitmapInterpolationMode.Default));
         }
 
         private DeferredRenderer CreateTargetAndRunFrame(

tests/Avalonia.Visuals.UnitTests/Rendering/SceneGraph/DrawOperationTests.cs

@@ -1,13 +1,13 @@
-using System;
+using Avalonia.Media;
-using Avalonia.Media;
 using Avalonia.Platform;
 using Avalonia.Rendering.SceneGraph;
 using Avalonia.Utilities;
+using Avalonia.Visuals.Media.Imaging;
 using Moq;
 using Xunit;
 
 namespace Avalonia.Visuals.UnitTests.Rendering.SceneGraph
-{
+{  
     public class DrawOperationTests
     {
         [Fact]
@@ -46,7 +46,13 @@ namespace Avalonia.Visuals.UnitTests.Rendering.SceneGraph
         public void Image_Node_Releases_Reference_To_Bitmap_On_Dispose()
         {
             var bitmap = RefCountable.Create(Mock.Of<IBitmapImpl>());
-            var imageNode = new ImageNode(Matrix.Identity, bitmap, 1, new Rect(1,1,1,1), new Rect(1,1,1,1));
+            var imageNode = new ImageNode(
+                Matrix.Identity,
+                bitmap,
+                1,
+                new Rect(1, 1, 1, 1),
+                new Rect(1, 1, 1, 1),
+                BitmapInterpolationMode.Default);
 
             Assert.Equal(2, bitmap.RefCount);