垂直滑块与自动收报机上的标签

时间：2013-03-13 16:33:25

标签： wpf slider

我目前正在尝试使用自动收报机获取自定义垂直滑块以及带有相应值的那些代码中的标签。我已经在网上找到了一些有趣的代码，用于我现在在我的解决方案中使用的水平滑块，如下所示：

XAML：

<ControlTemplate x:Key="HorizontalSlider" TargetType="{x:Type Slider}">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto" MinHeight="{TemplateBinding Slider.MinHeight}"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <local:MyTickBar Margin="5,0,10,0" x:Name="TopTick" SnapsToDevicePixels="True" Placement="Top" Fill="{StaticResource GlyphDarkBrush}" Height="5"  />
            <Border Name="TrackBackground" Margin="0" CornerRadius="2" Height="4" Grid.Row="1" Background="{StaticResource GlyphLightBrush}" BorderBrush="{StaticResource ButtonNormal}" BorderThickness="1" />
            <Track Grid.Row="1" Name="PART_Track">
                <Track.DecreaseRepeatButton>
                    <RepeatButton Style="{StaticResource SliderButtonStyle}" Command="Slider.DecreaseLarge" />
                </Track.DecreaseRepeatButton>
                <Track.Thumb>
                    <Thumb Style="{StaticResource SliderThumbStyle}" />
                </Track.Thumb>
                <Track.IncreaseRepeatButton>
                    <RepeatButton Style="{StaticResource SliderButtonStyle}" Command="Slider.IncreaseLarge" /> 
                </Track.IncreaseRepeatButton>
            </Track>
            <TickBar Name="BottomTick" SnapsToDevicePixels="True" Grid.Row="2" Fill="Black" Placement="Bottom" Height="10" Visibility="Collapsed" />
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="TickPlacement" Value="TopLeft">
                <Setter TargetName="TopTick" Property="Visibility" Value="Visible"/>
            </Trigger>
            <Trigger Property="TickPlacement" Value="BottomRight">
                <Setter TargetName="BottomTick" Property="Visibility" Value="Visible"/>
            </Trigger>
            <Trigger Property="TickPlacement" Value="Both">
                <Setter TargetName="TopTick" Property="Visibility" Value="Visible"/>
                <Setter TargetName="BottomTick" Property="Visibility" Value="Visible"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>

MyTickBar是一个定义为：

的类 
public class MyTickBar : TickBar
{
    protected override void OnRender(DrawingContext dc)
    {
        Size size = new Size(base.ActualWidth, base.ActualHeight);
        int tickCount = (int)((this.Maximum - this.Minimum) / this.TickFrequency) + 1;
        if ((this.Maximum - this.Minimum) % this.TickFrequency == 0)
            tickCount -= 1;
        Double tickFrequencySize;
        // Calculate tick's setting
        tickFrequencySize = (size.Width * this.TickFrequency / (this.Maximum - this.Minimum));
        string text = "";
        FormattedText formattedText = null;
        double num = this.Maximum - this.Minimum;
        int i = 0;
        // Draw each tick text
        for (i = 0; i <= tickCount; i++)
        {
            text = Convert.ToString(Convert.ToInt32(this.Minimum + this.TickFrequency * i), 10);
            formattedText = new FormattedText(text, CultureInfo.GetCultureInfo("en-us"), FlowDirection.LeftToRight, new Typeface("Verdana"), 16, Brushes.Black);
            dc.DrawText(formattedText, new Point((tickFrequencySize * i), 30));
        }
    }
}

这适用于水平滑块，但是当我假装一个垂直滑块时，我尝试了两种不同的解决方案但没有成功。首先，是为垂直滑块制作类似的XAML，但由于我对WPF很新，我无法实现预期的解决方案（我基本上将行和高度属性更改为列和，但可能有点比这更复杂）。我的第二次尝试是使用

<Slider.LayoutTransform>
            <RotateTransform Angle="270"/>
        </Slider.LayoutTransform>

在假装滑块上，获取标签位于错误位置的滑块，如下图所示：http://s22.postimage.org/sophl10wh/Incorrect.jpg

我尝试将旋转应用于MyTicker的DrawingContext但是旋转整个滚动条而不是带有值的标签。所以，我的问题是如何获得假装解决方案？通过对自定义垂直滑块的新XAML进行必要的更改，或者仅在第二个解决方案中旋转标签。

1 个答案:

答案 0 :(得分：5)

所以，我现在可以回答我自己的问题，也许可以帮助将来尝试完成相同的人。就像我在自己的问题的评论中说的那样，后来我意识到我可以去msdn并获得正确的垂直滑块模板，而不是尝试调整水平模板。

我目前的XAML现在是：

<ControlTemplate x:Key="VerticalSlider" TargetType="{x:Type Slider}">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="Auto" MinWidth="{TemplateBinding Slider.MinWidth}"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <local:MyTickBarVertical Margin="0,0,0,10" x:Name="TopTick" SnapsToDevicePixels="True" Placement="Left" Fill="{StaticResource GlyphDarkBrush}" Width="4" />
            <Track Grid.Column="1" Name="PART_Track">
                <Track.DecreaseRepeatButton>
                    <RepeatButton 
      Style="{StaticResource SliderButtonStyle}"
      Command="Slider.DecreaseLarge" />
                </Track.DecreaseRepeatButton>
                <Track.Thumb>
                    <Thumb Style="{StaticResource SliderThumbStyle}" />
                </Track.Thumb>
                <Track.IncreaseRepeatButton>
                    <RepeatButton 
      Style="{StaticResource SliderButtonStyle}"
      Command="Slider.IncreaseLarge" />
                </Track.IncreaseRepeatButton>
            </Track>
            <TickBar 
  Name="BottomTick"
  SnapsToDevicePixels="True" 
  Grid.Column="2"
  Fill="Black"
  Placement="Right"
  Width="4"
  Visibility="Collapsed" />
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="TickPlacement" Value="TopLeft">
                <Setter TargetName="TopTick" Property="Visibility" Value="Visible"/>
            </Trigger>
            <Trigger Property="TickPlacement" Value="BottomRight">
                <Setter TargetName="BottomTick" Property="Visibility" Value="Visible"/>
            </Trigger>
            <Trigger Property="TickPlacement" Value="Both">
                <Setter TargetName="TopTick" Property="Visibility" Value="Visible"/>
                <Setter TargetName="BottomTick" Property="Visibility" Value="Visible"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>

我已经对我的班级进行了一些小改动，因为现在我正在使用一个合适的垂直滑块：

public class MyTickBarVertical : TickBar
{
    protected override void OnRender(DrawingContext dc)
    {
        Size size = new Size(base.ActualWidth, base.ActualHeight);
        int tickCount = (int)((this.Maximum - this.Minimum) / this.TickFrequency) + 1;
        if ((this.Maximum - this.Minimum) % this.TickFrequency == 0)
            tickCount -= 1;
        Double tickFrequencySize;
        // Calculate tick's setting
        //width to height
        tickFrequencySize = (size.Height * this.TickFrequency / (this.Maximum - this.Minimum));
        string text = "";
        FormattedText formattedText = null;
        double num = this.Maximum - this.Minimum;
        int i = 0;
        // Draw each tick text
        for (i = 0; i <= tickCount; i++)
        {
            text = Convert.ToString(Convert.ToInt32(this.Maximum) - Convert.ToInt32(this.Minimum + this.TickFrequency * i), 10);
            formattedText = new FormattedText(text, CultureInfo.GetCultureInfo("en-us"), FlowDirection.RightToLeft, new Typeface("Verdana"), 16, Brushes.Black);
            dc.DrawText(formattedText, new Point(0, (tickFrequencySize * i)));
        }
    }
}

立即获取以下内容：http://s4.postimage.org/d0q6dpxvx/Correct.jpg

干杯！

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