c#uwpcolor-picker
C# UWP fix ColorPicker's appearance
In C# uwp since i have been added XamlControlsResources to my app.xaml, my ColorPicker's appearance on the UI totally changed. I have fixed to most of it but i didn't find anything how can i change the inner selector's size in the ColorSpectrum.
Any idea to reduce this selector size?
Solution
Add a new style for ColorSpectrum and use this new style in ColorPickerStyle.
You can find the styles of TimePicker in generic.xaml which is available in the \(Program Files)\Windows Kits\10\DesignTime\CommonConfiguration\Neutral\UAP\10.0.xxxxx.0\Generic.
<Grid x:Name="SelectionEllipsePanel" Width="16" Height="16">
The default size of inner selector is 16*16, and you can change its Width and Height.
<Page.Resources>
<Style x:Key="ColorSpectrumNewStyle" TargetType="ColorSpectrum">
<Setter Property="ManipulationMode" Value="None" />
<Setter Property="UseSystemFocusVisuals" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ColorSpectrum">
<Grid x:Name="LayoutRoot">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="PointerOver">
<VisualState.Setters>
<Setter Target="SelectionEllipse.Opacity" Value="0.8" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Pressed" />
<VisualState x:Name="PressedLarge">
<VisualState.Setters>
<Setter Target="SelectionEllipsePanel.Width" Value="48" />
<Setter Target="SelectionEllipsePanel.Height" Value="48" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionEllipseColor">
<VisualState x:Name="SelectionEllipseLight" />
<VisualState x:Name="SelectionEllipseDark">
<VisualState.Setters>
<Setter Target="FocusEllipse.Stroke" Value="{ThemeResource SystemControlBackgroundChromeWhiteBrush}" />
<Setter Target="SelectionEllipse.Stroke" Value="{ThemeResource SystemControlBackgroundChromeBlackHighBrush}" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ShapeSelected">
<VisualState x:Name="BoxSelected" />
<VisualState x:Name="RingSelected">
<VisualState.Setters>
<Setter Target="SpectrumRectangle.Visibility" Value="Collapsed" />
<Setter Target="SpectrumOverlayRectangle.Visibility" Value="Collapsed" />
<Setter Target="RectangleBorder.Visibility" Value="Collapsed" />
<Setter Target="SpectrumEllipse.Visibility" Value="Visible" />
<Setter Target="SpectrumOverlayEllipse.Visibility" Value="Visible" />
<Setter Target="EllipseBorder.Visibility" Value="Visible" />
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Unfocused" />
<VisualState x:Name="Focused">
<VisualState.Setters>
<Setter Target="FocusEllipse.Visibility" Value="Visible" />
</VisualState.Setters>
</VisualState>
<VisualState x:Name="PointerFocused" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="SizingGrid" HorizontalAlignment="Center" VerticalAlignment="Center">
<Grid.Clip>
<RectangleGeometry />
</Grid.Clip>
<Rectangle x:Name="SpectrumRectangle" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
<Rectangle x:Name="SpectrumOverlayRectangle" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
<Ellipse x:Name="SpectrumEllipse" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Visibility="Collapsed" Margin="0,0,-1,-1" />
<Ellipse x:Name="SpectrumOverlayEllipse" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Visibility="Collapsed" Margin="0,0,-1,-1" />
<Canvas x:Name="InputTarget" Background="Transparent" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Control.IsTemplateFocusTarget="True">
<!--modify here-->
<Grid x:Name="SelectionEllipsePanel" Width="50" Height="50">
<Ellipse x:Name="FocusEllipse" Stroke="{ThemeResource SystemControlBackgroundChromeBlackHighBrush}" Margin="-2" StrokeThickness="2" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Visibility="Collapsed" />
<Ellipse x:Name="SelectionEllipse" Stroke="{ThemeResource SystemControlBackgroundChromeWhiteBrush}" StrokeThickness="2" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ToolTipService.ToolTip>
<ToolTip x:Name="ColorNameToolTip" VerticalOffset="20" />
</ToolTipService.ToolTip>
</Ellipse>
</Grid>
</Canvas>
<Rectangle x:Name="RectangleBorder" Style="{StaticResource ColorPickerBorderStyle}" IsHitTestVisible="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
<Ellipse x:Name="EllipseBorder" Style="{StaticResource ColorPickerBorderStyle}" IsHitTestVisible="False" Visibility="Collapsed" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="-0.5,-0.5,-1.5,-1.5" />
</Grid>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ColorPickerBorderStyle" TargetType="Shape">
<Setter Property="Stroke" Value="{ThemeResource SystemControlForegroundListLowBrush}"/>
<Setter Property="StrokeThickness" Value="2"/>
</Style>
<Style x:Key="ColorPickerStyle1" TargetType="ColorPicker">
<Setter Property="MaxWidth" Value="392"/>
<Setter Property="MinWidth" Value="312"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ColorPicker">
<Grid Background="{TemplateBinding Background}">
...
...
<StackPanel>
<Grid x:Name="ColorSpectrumGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!--add ColorSpectrumNewStyle here-->
<ColorSpectrum x:Name="ColorSpectrum" Style="{StaticResource ColorSpectrumNewStyle}" Grid.Column="0" Components="{TemplateBinding ColorSpectrumComponents}" MinHue="{TemplateBinding MinHue}" MaxWidth="336" MaxSaturation="{TemplateBinding MaxSaturation}" MinSaturation="{TemplateBinding MinSaturation}" MinWidth="256" MaxHeight="336" MinHeight="256" MinValue="{TemplateBinding MinValue}" MaxValue="{TemplateBinding MaxValue}" MaxHue="{TemplateBinding MaxHue}" Grid.Row="0" Shape="{TemplateBinding ColorSpectrumShape}"/>
<Grid x:Name="ColorPreviewRectangleGrid" Grid.Column="1" Margin="12,0,0,0" Grid.Row="0" Width="44">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Rectangle Grid.ColumnSpan="2" Grid.RowSpan="2" VerticalAlignment="Stretch">
<Rectangle.Fill>
<ImageBrush x:Name="ColorPreviewRectangleCheckeredBackgroundImageBrush"/>
</Rectangle.Fill>
</Rectangle>
<Rectangle x:Name="ColorPreviewRectangle" Grid.ColumnSpan="2" Grid.RowSpan="2" VerticalAlignment="Stretch"/>
<Rectangle x:Name="PreviousColorRectangle" Grid.ColumnSpan="2" Grid.Row="1" VerticalAlignment="Stretch" Visibility="Collapsed"/>
<Rectangle x:Name="BorderRectangle" Grid.ColumnSpan="2" Grid.RowSpan="2" Style="{StaticResource ColorPickerBorderStyle}"/>
</Grid>
</Grid>
...
...
</StackPanel>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
<Grid>
<ColorPicker Style="{StaticResource ColorPickerStyle1}">
</ColorPicker>
</Grid>
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