xamlgridviewuwpdatatemplateellipse
UWP: how to create a "rounded" color picker
I would like to create a color picker that looks like in Windows Ink:
So I've created a GridView that contains my ItemTemplate:
<GridView x:Name="colorList2" HorizontalAlignment="Stretch" VerticalAlignment="Top"
IsItemClickEnabled="True"
ItemClick="colorList2_ItemClick"
SelectionMode="Single"
SelectionChanged="colorList2_SelectionChanged"
>
<GridView.ItemTemplate>
<DataTemplate>
<Grid RightTapped="Grid_RightTapped" Tapped="Grid_Tapped">
<Button Height="30" Width="30">
<Button.Template>
<ControlTemplate TargetType="Button">
<Grid>
<Ellipse Fill="{Binding Color}"/>
<ContentPresenter Content="{TemplateBinding Content}"
HorizontalAlignment="Center"
VerticalAlignment="Center"/>
</Grid>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
In the Grid_RightTapped and Grid_Tappent events, I get the clicked color, I colorize my items, and I affect the selected item to the GridView:
private void Grid_Tapped(object sender, TappedRoutedEventArgs e)
{
Colors selectedColor = (sender as Grid).DataContext as Colors;
foreach (NodeViewModel node in diagram.Nodes as DiagramCollection<NodeViewModel>)
{
...
}
this.colorList2.SelectedItem = selectedColor;
}
}
This works well but I would like to know if there is a way to "customize" the template of the selected/hover item of the GridView? These are squares and I would like to replace them by by ellipses, like in Windows Ink.
Solution
You need to override ItemContainerStyle for your GridViewItem.
Look at the GridViewItemExpanded style in Generic.xaml in C:\Program Files (x86)\Windows Kits\10\DesignTime\CommonConfiguration\Neutral\UAP\10.0.10240.0\Generic and change Rectangle to Ellipse.
And don't forget to setup into your GridView.
For example:
<GridView>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<!--Apply new data-->
</Style>
</GridView.ItemContainerStyle>
</GridView>
Correct Style is:
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}" />
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}" />
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Foreground" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
<Setter Property="TabNavigation" Value="Local"/>
<Setter Property="IsHoldingEnabled" Value="True"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Margin" Value="0,2,12,12"/>
<Setter Property="MinWidth" Value="0"/>
<Setter Property="MinHeight" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="GridViewItem">
<Grid x:Name="ContentBorder"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal">
<Storyboard>
<PointerUpThemeAnimation Storyboard.TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="BorderRectangle"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderRectangle" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListLowBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent" />
</ObjectAnimationUsingKeyFrames>
<PointerUpThemeAnimation Storyboard.TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="BorderRectangle"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderRectangle" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListMediumBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent" />
</ObjectAnimationUsingKeyFrames>
<PointerDownThemeAnimation TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
<VisualState x:Name="Selected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="MultiSelectCheck"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<DoubleAnimation Storyboard.TargetName="BorderRectangle"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderRectangle" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MultiSelectSquare" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" />
</ObjectAnimationUsingKeyFrames>
<PointerUpThemeAnimation Storyboard.TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOverSelected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="MultiSelectCheck"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<DoubleAnimation Storyboard.TargetName="BorderRectangle"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderRectangle" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListAccentMediumBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MultiSelectSquare" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" />
</ObjectAnimationUsingKeyFrames>
<PointerUpThemeAnimation Storyboard.TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
<VisualState x:Name="PressedSelected">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="MultiSelectCheck"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<DoubleAnimation Storyboard.TargetName="BorderRectangle"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="BorderRectangle" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightListAccentHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlForegroundBaseHighBrush}" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="FocusVisualBlack" Storyboard.TargetProperty="Stroke">
<DiscreteObjectKeyFrame KeyTime="0" Value="Transparent" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MultiSelectSquare" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAccentBrush}" />
</ObjectAnimationUsingKeyFrames>
<PointerDownThemeAnimation TargetName="ContentPresenter" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DisabledStates">
<VisualState x:Name="Enabled"/>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ContentBorder"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="{ThemeResource ListViewItemDisabledThemeOpacity}"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Unfocused"/>
<VisualState x:Name="Focused">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="FocusVisualWhite"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
<DoubleAnimation Storyboard.TargetName="FocusVisualBlack"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="MultiSelectStates">
<VisualState x:Name="MultiSelectDisabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MultiSelectSquare" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
<DiscreteObjectKeyFrame KeyTime="0:0:0.333" Value="Collapsed" />
</ObjectAnimationUsingKeyFrames>
<FadeOutThemeAnimation TargetName="MultiSelectSquare"/>
</Storyboard>
</VisualState>
<VisualState x:Name="MultiSelectEnabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="MultiSelectSquare" Storyboard.TargetProperty="Visibility">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
<FadeInThemeAnimation TargetName="MultiSelectSquare"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="DataVirtualizationStates">
<VisualState x:Name="DataAvailable"/>
<VisualState x:Name="DataPlaceholder"/>
</VisualStateGroup>
<VisualStateGroup x:Name="ReorderHintStates">
<VisualState x:Name="NoReorderHint"/>
<VisualState x:Name="BottomReorderHint">
<Storyboard>
<DragOverThemeAnimation TargetName="ContentBorder" ToOffset="{ThemeResource GridViewItemReorderHintThemeOffset}" Direction="Bottom" />
</Storyboard>
</VisualState>
<VisualState x:Name="TopReorderHint">
<Storyboard>
<DragOverThemeAnimation TargetName="ContentBorder" ToOffset="{ThemeResource GridViewItemReorderHintThemeOffset}" Direction="Top" />
</Storyboard>
</VisualState>
<VisualState x:Name="RightReorderHint">
<Storyboard>
<DragOverThemeAnimation TargetName="ContentBorder" ToOffset="{ThemeResource GridViewItemReorderHintThemeOffset}" Direction="Right" />
</Storyboard>
</VisualState>
<VisualState x:Name="LeftReorderHint">
<Storyboard>
<DragOverThemeAnimation TargetName="ContentBorder" ToOffset="{ThemeResource GridViewItemReorderHintThemeOffset}" Direction="Left" />
</Storyboard>
</VisualState>
<VisualStateGroup.Transitions>
<VisualTransition To="NoReorderHint" GeneratedDuration="0:0:0.2"/>
</VisualStateGroup.Transitions>
</VisualStateGroup>
<VisualStateGroup x:Name="DragStates">
<VisualState x:Name="NotDragging" />
<VisualState x:Name="Dragging">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="ContentBorder"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="{ThemeResource ListViewItemDragThemeOpacity}" />
<DragItemThemeAnimation TargetName="ContentBorder" />
</Storyboard>
</VisualState>
<VisualState x:Name="DraggingTarget">
<Storyboard>
<DropTargetItemThemeAnimation TargetName="ContentBorder" />
</Storyboard>
</VisualState>
<VisualState x:Name="MultipleDraggingPrimary">
<Storyboard>
<!-- These two Opacity animations are required - the FadeInThemeAnimations
on the same elements animate an internal Opacity. -->
<DoubleAnimation Storyboard.TargetName="MultiArrangeOverlayBackground"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="1" />
<DoubleAnimation Storyboard.TargetName="ContentBorder"
Storyboard.TargetProperty="Opacity"
Duration="0"
To="{ThemeResource ListViewItemDragThemeOpacity}" />
<FadeInThemeAnimation TargetName="MultiArrangeOverlayBackground" />
<DragItemThemeAnimation TargetName="ContentBorder" />
</Storyboard>
</VisualState>
<VisualState x:Name="MultipleDraggingSecondary">
<Storyboard>
<FadeOutThemeAnimation TargetName="ContentBorder" />
</Storyboard>
</VisualState>
<VisualState x:Name="DraggedPlaceholder">
<Storyboard>
<FadeOutThemeAnimation TargetName="ContentBorder" />
</Storyboard>
</VisualState>
<VisualStateGroup.Transitions>
<VisualTransition To="NotDragging" GeneratedDuration="0:0:0.2"/>
</VisualStateGroup.Transitions>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<ContentPresenter x:Name="ContentPresenter"
ContentTransitions="{TemplateBinding ContentTransitions}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
<Ellipse x:Name="MultiArrangeOverlayBackground"
IsHitTestVisible="False"
Opacity="0"
Fill="{ThemeResource ListViewItemDragBackgroundThemeBrush}"
Grid.ColumnSpan="2"/>
<Ellipse x:Name="BorderRectangle"
Margin="-2"
IsHitTestVisible="False"
Stroke="{ThemeResource SystemControlHighlightListAccentLowBrush}"
StrokeThickness="3"
Opacity="0"/>
<Border x:Name="MultiSelectSquare"
Background="{ThemeResource SystemControlBackgroundChromeMediumBrush}"
Width="20"
Height="20"
Margin="0,2,2,0"
VerticalAlignment="Top"
HorizontalAlignment="Right"
Visibility="Collapsed" >
<FontIcon x:Name="MultiSelectCheck"
FontFamily="{ThemeResource SymbolThemeFontFamily}"
Glyph=""
FontSize="16"
Foreground="{ThemeResource SystemControlForegroundBaseMediumHighBrush}"
Opacity="0"/>
</Border>
<Ellipse x:Name="FocusVisualWhite"
IsHitTestVisible="False"
Stroke="{ThemeResource SystemControlForegroundAltHighBrush}"
StrokeEndLineCap="Square"
StrokeDashArray="1.0, 1.0"
StrokeDashOffset="1.5"
StrokeThickness="2"
Opacity="0"/>
<Ellipse x:Name="FocusVisualBlack"
IsHitTestVisible="False"
Stroke="{ThemeResource SystemControlForegroundBaseHighBrush}"
StrokeEndLineCap="Square"
StrokeDashArray="1.0, 1.0"
StrokeDashOffset="0.5"
StrokeThickness="2"
Opacity="0"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GridView.ItemContainerStyle>
