What is the best way to slide a panel in WPF?
- by Kris Erickson
I have a fairly simple UserControl that I have made (pardon my Xaml I am just learning WPF) and I want to slide the off the screen. To do so I am animating a translate transform (I also tried making the Panel the child of a canvas and animating the X position with the same results), but the panel moves very jerkily, even on a fairly fast new computer. What is the best way to slide in and out (preferably with KeySplines so that it moves with inertia) without getting the jerkyness. I only have 8 buttons on the panel, so I didn't think it would be too much of a problem.
Here is the Xaml I am using, it runs fine in Kaxaml, but it is very jerky and slow (as well as being jerkly and slow when run compiled in a WPF app).
<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="1002" Height="578">
<UserControl.Resources>
<Style TargetType="Button">
<Setter Property="Control.Padding" Value="4"/>
<Setter Property="Control.Margin" Value="10"/>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid Name="backgroundGrid" Width="210" Height="210" Background="#00FFFFFF">
<Grid.BitmapEffect>
<BitmapEffectGroup>
<DropShadowBitmapEffect x:Name="buttonDropShadow" ShadowDepth="2"/>
<OuterGlowBitmapEffect x:Name="buttonGlow" GlowColor="#A0FEDF00" GlowSize="0"/>
</BitmapEffectGroup>
</Grid.BitmapEffect>
<Border x:Name="background" Margin="1,1,1,1" CornerRadius="15">
<Border.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStop Offset="0" Color="#FF0062B6"/>
<GradientStop Offset="1" Color="#FF0089FE"/>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>
</Border>
<Border Margin="1,1,1,0" BorderBrush="#FF000000" BorderThickness="1.5" CornerRadius="15"/>
<ContentPresenter HorizontalAlignment="Center" Margin="{TemplateBinding Control.Padding}"
VerticalAlignment="Center" Content="{TemplateBinding ContentControl.Content}"
ContentTemplate="{TemplateBinding ContentControl.ContentTemplate}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Canvas>
<Grid x:Name="Panel1" Height="578" Canvas.Left="0" Canvas.Top="0">
<Grid.RenderTransform>
<TransformGroup>
<TranslateTransform x:Name="panelTranslate" X="0" Y="0"/>
</TransformGroup>
</Grid.RenderTransform>
<Grid.RowDefinitions>
<RowDefinition Height="287"/>
<RowDefinition Height="287"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition x:Name="Panel1Col1"/>
<ColumnDefinition x:Name="Panel1Col2"/>
<ColumnDefinition x:Name="Panel1Col3"/>
<ColumnDefinition x:Name="Panel1Col4"/>
<!-- Set width to 0 to hide a column-->
</Grid.ColumnDefinitions>
<Button x:Name="Panel1Product1" Grid.Column="0" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click" SourceName="Panel1Product1">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation BeginTime="00:00:00.6" Duration="0:0:3" From="0" Storyboard.TargetName="panelTranslate" Storyboard.TargetProperty="X" To="-1000"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Button.Triggers>
</Button>
<Button x:Name="Panel1Product2" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product3" Grid.Column="1" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product4" Grid.Column="1" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product5" Grid.Column="2" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product6" Grid.Column="2" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product7" Grid.Column="3" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Button x:Name="Panel1Product8" Grid.Column="3" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
</Canvas>
</UserControl>
