WPF 带刻度的滑动条实现

原文:WPF 带刻度的滑动条实现

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/BYH371256/article/details/83507170

本章讲述：带刻度的水平滑动条实现；主要通过修改Slider的样式实现。

样式主要代码

<Style x:Key="SliderRepeatButtonStyle_Horiz" TargetType="{x:Type RepeatButton}">
	<Setter Property="OverridesDefaultStyle" Value="true"/>
	<Setter Property="IsTabStop" Value="false"/>
	<Setter Property="Height" Value="2"/>
	<Setter Property="Focusable" Value="false"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type RepeatButton}">
				<Rectangle Fill="#2DBDFA"/>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

<Style x:Key="SliderRepeatButtonStyle_Horiz1" TargetType="RepeatButton">
	<Setter Property="OverridesDefaultStyle" Value="true"/>
	<Setter Property="IsTabStop" Value="false"/>
	<Setter Property="Height" Value="2"/>
	<Setter Property="Focusable" Value="false"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type RepeatButton}">
				<Rectangle Fill="White"/>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

<Geometry x:Key="SliderThumbOuterBorderGeometry">
	M9.5,5 C9.5,7.4852814 7.4852814,9.5 5,9.5 C2.5147186,9.5 0.5,7.4852814 0.5,5 C0.5,2.5147186 2.5147186,0.5 5,0.5 C7.4852814,0.5 9.5,2.5147186 9.5,5 z
</Geometry>

<Style x:Key="HorizontalSliderThumbStyle_Horiz" TargetType="{x:Type Thumb}">
	<Setter Property="Focusable" Value="false"/>
	<Setter Property="OverridesDefaultStyle" Value="true"/>
	<Setter Property="Height" Value="20"/>
	<Setter Property="Width" Value="11"/>
	<Setter Property="Foreground" Value="Transparent"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type Thumb}">
				<Canvas SnapsToDevicePixels="true">
					<Canvas.RenderTransform>
						<TranslateTransform X="0" Y="5.0"/>
					</Canvas.RenderTransform>
					<Path x:Name="Background"  Data="{StaticResource SliderThumbOuterBorderGeometry}" Fill="#FF1F9CF0" />
					<Path x:Name="InnerBorder" Data="{StaticResource SliderThumbOuterBorderGeometry}" Stroke="White"  />
					<Path x:Name="OuterBorder" Data="{StaticResource SliderThumbOuterBorderGeometry}" Stroke="Transparent" />

				</Canvas>
				<ControlTemplate.Triggers>
					<Trigger Property="IsMouseOver" Value="true">
						<Setter Property="Fill" TargetName="Background" Value="#FF29AFF5"/>
						<Setter Property="Stroke" TargetName="OuterBorder" Value="White"/>
					</Trigger>
					<Trigger Property="IsDragging" Value="true">
					</Trigger>
				</ControlTemplate.Triggers>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

<Style x:Key="SliderStyle_TrickBar_Horiz" TargetType="{x:Type Slider}">
	<Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
	<Setter Property="Background" Value="Transparent"/>
	<Setter Property="Foreground" Value="White"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type Slider}">
				<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"
			Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
					<Grid Margin="0">
						<Grid.RowDefinitions>
							<RowDefinition Height="Auto"/>
							<RowDefinition Height="Auto" MinHeight="{TemplateBinding MinHeight}"/>
						</Grid.RowDefinitions>
						<TickBar x:Name="TopTick" Fill="{TemplateBinding Foreground}" Height="4" Placement="Top" Grid.Row="0"
					 Minimum="0" Maximum="15" Visibility="Visible"/>
						<TickBar x:Name="BottomTick" Fill="{TemplateBinding Foreground}" Height="4" Placement="Bottom"
					 Grid.Row="2" Visibility="Collapsed"/>
						<Track x:Name="PART_Track" Grid.Row="1">
							<Track.DecreaseRepeatButton>
								<RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource SliderRepeatButtonStyle_Horiz}"/>
							</Track.DecreaseRepeatButton>
							<Track.IncreaseRepeatButton>
								<RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource SliderRepeatButtonStyle_Horiz1}"
								  HorizontalAlignment="Stretch"/>
							</Track.IncreaseRepeatButton>
							<Track.Thumb>
								<Thumb x:Name="Thumb" Style="{StaticResource HorizontalSliderThumbStyle_Horiz}" Margin="0,1,0,0"/>
							</Track.Thumb>
						</Track>
					</Grid>
				</Border>
				<ControlTemplate.Triggers>
					<Trigger Property="IsSelectionRangeEnabled" Value="true">
					</Trigger>
					<Trigger Property="IsKeyboardFocused" Value="true">
						<Setter Property="Foreground" TargetName="Thumb" Value="Blue"/>
					</Trigger>
				</ControlTemplate.Triggers>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

<Style x:Key="SliderStyle_TrickBarNegative_Horiz" TargetType="{x:Type Slider}">
	<Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
	<Setter Property="Background" Value="Transparent"/>
	<Setter Property="Foreground" Value="White"/>
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="{x:Type Slider}">
				<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"
			Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
					<Grid Margin="0">
						<Grid.RowDefinitions>
							<RowDefinition Height="Auto"/>
							<RowDefinition Height="Auto" MinHeight="{TemplateBinding MinHeight}"/>
						</Grid.RowDefinitions>
						<TickBar x:Name="TopTick" Fill="{TemplateBinding Foreground}" Height="4" Placement="Top" Grid.Row="0"
					 Minimum="0" Maximum="10" Visibility="Visible"/>
						<TickBar x:Name="BottomTick" Fill="{TemplateBinding Foreground}" Height="4" Placement="Bottom"
					 Grid.Row="2" Visibility="Collapsed"/>
						<Track x:Name="PART_Track" Grid.Row="1">
							<Track.DecreaseRepeatButton>
								<RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource SliderRepeatButtonStyle_Horiz}"/>
							</Track.DecreaseRepeatButton>
							<Track.IncreaseRepeatButton>
								<RepeatButton Command="{x:Static Slider.DecreaseLarge}" Style="{StaticResource SliderRepeatButtonStyle_Horiz1}"
								  HorizontalAlignment="Stretch"/>
							</Track.IncreaseRepeatButton>
							<Track.Thumb>
								<Thumb x:Name="Thumb" Style="{StaticResource HorizontalSliderThumbStyle_Horiz}" Margin="0,1,0,0"/>
							</Track.Thumb>
						</Track>
					</Grid>
				</Border>
				<ControlTemplate.Triggers>
					<Trigger Property="IsSelectionRangeEnabled" Value="true">
					</Trigger>
					<Trigger Property="IsKeyboardFocused" Value="true">
						<Setter Property="Foreground" TargetName="Thumb" Value="Blue"/>
					</Trigger>
				</ControlTemplate.Triggers>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>

引用示例代码

<Slider Margin="2,2" x:Name="DefinitionSlider" Width="250" Minimum="0" Maximum="15" Value="5"
                IsSnapToTickEnabled="True" Style="{StaticResource SliderStyle_TrickBar_Horiz}" />

效果图