Panning with Middle Mouse Button

[John]

How can I do that ?

[Muneesh Kumar G]

Hi xmen, 

 

Greetings from Syncfusion, we have analyzed your requirement and you can achieve this by extending SfChart and ChartZoomPanBehavior then overriding MouseDown and MouseUp event as per the below code snippet.  

 

Code snippet 

public class SfChartExt : SfChart 

    { 

        protected override void OnMouseDown(MouseButtonEventArgs e) 

        { 

            base.OnMouseDown(e); 

 

            if (e.ChangedButton == MouseButton.Middle && e.ButtonState == MouseButtonState.Pressed) 

                foreach (var behavior in Behaviors) 

                { 

                    if (behavior is ChartZoomPanBehaviorExt) 

                        (behavior as ChartZoomPanBehaviorExt).MouseLeftButtonDown(e); 

                } 

        } 

 

        protected override void OnMouseUp(MouseButtonEventArgs e) 

        { 

            base.OnMouseUp(e); 

 

            if (e.ChangedButton == MouseButton.Middle && e.ButtonState == MouseButtonState.Released) 

                foreach (var behavior in Behaviors) 

                { 

                    if (behavior is ChartZoomPanBehaviorExt) 

                        (behavior as ChartZoomPanBehaviorExt).MouseLeftButtonUp(e); 

 

                } 

        } 

    } 

 

    public class ChartZoomPanBehaviorExt : ChartZoomPanBehavior 

    { 

        public void MouseLeftButtonUp(MouseButtonEventArgs e) 

        { 

            OnMouseLeftButtonUp(e); 

        } 

 

        public void MouseLeftButtonDown(MouseButtonEventArgs e) 

        { 

            OnMouseLeftButtonDown(e); 

        } 

    } 

 

 

  <local:SfChartExt Margin="10" x:Name="chart" PanChanging="chart_PanChanging"> 

 

            <chart:SfChart.Behaviors> 

 

                <local:ChartZoomPanBehaviorExt EnablePanning="True" EnableMouseWheelZooming="True" /> 

 

            </chart:SfChart.Behaviors> 

            .. 

 

        </local:SfChartExt> 

 

Here we have checked the mouse state and changed button for middle button identification.  

 

Sample: http://www.syncfusion.com/downloads/support/forum/143266/ze/WPF_Sample2124553622.zip 

 

Hope it helps you.  

 

Thanks, 

Muneesh Kumar G.