Map and ScrollBar

Question

Hi,

In my project, I have a map that needs to be inside a ScrollBar. My problem is that when I do so, I lose the Pan functionality of the map. I really must find some way to make the pan work, and i also must give the user the possibility to scrolling possibility on the window (a ChildWindow) so it can see the whole content of the page.

jonataspovoas · Answer

Hi,

It worked!

Thanks a lot for your help!

DominiqueBroux · Answer

I got it working with this code:
public partial class TestScrollViewer : UserControl
{
    public TestScrollViewer()
    {
        InitializeComponent();
        MyMap.Loaded += AttachMouseLeftButtonHandlers; // maybe set in XAML as well : Loaded="AttachMouseLeftButtonHandlers"
    }
    private void AttachMouseLeftButtonHandlers(object sender, RoutedEventArgs e)
    {
        Map map = sender as Map;
        // Get the "RootElement" of the map   ~ of map.GetTemplateChild("RootElement") but GetTemplateChild is protected and Map is sealed
        var rootElement = ((FrameworkElement)VisualTreeHelper.GetChild(map, 0)).FindName("RootElement") as Grid;
        if (rootElement != null)
        {
            rootElement.MouseLeftButtonDown += RootElement_MouseLeftButtonDown;
            rootElement.MouseLeftButtonUp += (s, arg) => _upFired = true;
        }
    }
    // Hack to get the map taking care of the MouseLeftButtonDown event even if
    // this event is handled by the a parent element such as a scrollviewer
    private bool _upFired;
    void RootElement_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        _upFired = false;
        Dispatcher.BeginInvoke(() =>
                                {
                                    if (!_upFired) // else up event fired meanwhile 
                                        e.Handled = false;
                                });
    }
}

Reminder : code provided without any guarantee of good behavior for future versions or even for this version.

jonataspovoas · Answer

What do you mean? I just tested and I am able to view the live application and I am able to download the code and get the ScrollableMap.cs file. Hi, I managed to get the code (the proxy on my workplace was blocking the page), but I couldn't use the "hack" to assign the mouseLeftButtonDown/Up to the map. The path to my map is something like this: I have my ScrollViwer, and inside of it a Grid. The Grid gets through code the UserControl I use to define the ScrollViwer's content. It has another Grid that holds a StackPanel, that has Border countaining a Grid that has the Map, and a Navigator. What should I do?