WP7 Bing Map Pushpin - 如何调整自定义图钉的位置？

Question

好的,简单的问题,但我还没有找到明显简单的答案!我有一个带有地图集成的Windows Phone 7应用程序,地图上有一组图钉.图钉是自定义的(只是椭圆/圆形).

不幸的是,自定义图钉的位置与地理位置"关闭".当你放大时,它越来越接近准确,并且在最缩小的水平中是最远的.

我认为这是一个抵消问题.我查看了RenderTransformOnOrigin,但它似乎没有帮助我.

在此先感谢,这是相关的代码:

<phone:PhoneApplicationPage.Resources>
    <ControlTemplate x:Key="PushpinControlTemplateBlue" TargetType="my2:Pushpin">
        <Grid x:Name="ContentGrid" Width="34" Height="34" RenderTransformOrigin="0.5,0.5">
            <StackPanel Orientation="Vertical" >
                <Grid MinHeight="31" MinWidth="29" Margin="0">
                    <Ellipse Fill="Blue"
                            Margin="1"
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Width="20"
                            Height="20"
                            Stroke="White"
                            StrokeThickness="3" />
                    <ContentPresenter HorizontalAlignment="Center"
                                Content="{TemplateBinding Content}"
                                ContentTemplate="{TemplateBinding ContentTemplate}"
                                Margin="4"/>
                </Grid>
            </StackPanel>
        </Grid>
    </ControlTemplate>
</phone:PhoneApplicationPage.Resources>


    <my1:Map Canvas.Left="16" Canvas.Top="13" CopyrightVisibility="Collapsed" CredentialsProvider="AtqOU-L_liZekzqR0mEG7dGDwswKnnXSoSmsVs6eGtAe7S9NZDiAtpAd1vgPfhxD" Height="521" LogoVisibility="Collapsed" Name="mapMain" ScaleVisibility="Collapsed" VerticalContentAlignment="Top" Visibility="Visible" Width="446" ZoomBarVisibility="Collapsed" BorderThickness="1" Background="Tomato">
        <my2:Pushpin Name="pin1"
                 Location="51.461326390697344, -0.9261151403188705"
                 Content=""
                 Template="{StaticResource PushpinControlTemplateBlue}" />
    </my1:Map>

Answer 1

A中的PushPin类有一个PositionOrigin指示该定位点是相对于销的视觉表示属性.

默认样式使用"BottomLeft",因为它的形状有一个滴答漏斗到它左下端的一个点.

但是,您使用的是圆圈,因此您需要移动PositionOrigin到中心.我还建议您使用样式而不是简单的模板来"设计"您的图钉: -

    <ControlTemplate x:Key="PushpinControlTemplate" TargetType="my2:Pushpin">
        <Grid x:Name="ContentGrid" Width="34" Height="34" RenderTransformOrigin="0.5,0.5">
            <StackPanel Orientation="Vertical" >
                <Grid MinHeight="31" MinWidth="29" Margin="0">
                    <Ellipse Fill="{TemplateBinding Background}"
                            Margin="1"
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Width="20"
                            Height="20"
                            Stroke="{TemplateBinding Foreground}"
                            StrokeThickness="3" />
                    <ContentPresenter HorizontalAlignment="Center"
                                Content="{TemplateBinding Content}"
                                ContentTemplate="{TemplateBinding ContentTemplate}"
                                Margin="4"/>
                </Grid>
            </StackPanel>
        </Grid>
    </ControlTemplate>

<Style TargetType="my2:Pushpin" x:Key="PushpinControlTemplateBlue">
    <Setter Property="Template" Value="{StaticResource PushpinControlTemplate}" />
    <Setter Property="PositionOrigin" Value="Center" />
    <Setter Property="Background" Value="Blue" />
    <Setter Property="Foreground" Value="White" />
    <Setter Property="FontSize" Value="18" />
</Style>

现在您的Xaml成为: -

 <my2:Pushpin Name="pin1"
             Location="51.461326390697344, -0.9261151403188705"
             Content=""
             Style="{StaticResource PushpinControlTemplateBlue}" />