/// <summary>
/// Event raised on mouse down in the ZoomAndPanControl.
/// </summary>
private void zoomAndPanControl_MouseDown(object sender, MouseButtonEventArgs e)
{
ContentListBox.Focus();
Keyboard.Focus(ContentListBox);
mouseButtonDown = e.ChangedButton;
origZoomAndPanControlMouseDownPoint = e.GetPosition(ZoomAndPanControl);
origContentMouseDownPoint = e.GetPosition(ContentListBox);
if ((Keyboard.Modifiers & ModifierKeys.Shift) != 0 &&
(e.ChangedButton == MouseButton.Left ||
e.ChangedButton == MouseButton.Right))
{
// Shift + left- or right-down initiates zooming mode.
mouseHandlingMode = MouseHandlingMode.Zooming;
}
else if (mouseButtonDown == MouseButton.Left)
{
// Just a plain old left-down initiates panning mode.
mouseHandlingMode = MouseHandlingMode.Panning;
}
if (mouseHandlingMode != MouseHandlingMode.None)
{
// Capture the mouse so that we eventually receive the mouse up event.
ZoomAndPanControl.CaptureMouse();
e.Handled = true;
}
}
/// <summary>
/// Event raised when a mouse button is clicked down over a Ellipse.
/// </summary>
private void Ellipse_MouseDown(object sender, MouseButtonEventArgs e)
{
mouseButtonDown = e.ChangedButton;
if (mouseButtonDown == MouseButton.Left)
{
ContentListBox.Focus();
Keyboard.Focus(ContentListBox);
Grid grid = (Grid)sender;
var ellipse = grid.Children.Cast <Ellipse>().FirstOrDefault();
Spot spot = (Spot)ellipse.DataContext;
if (spot.IsSelected)
{
spot.Width = 20;
spot.Height = 20;
spot.IsSelected = false;
_mainViewModel.SelectedSpots.Remove(spot);
}
else
{
spot.IsSelected = true;
spot.Width = 26;
spot.Height = 26;
_mainViewModel.SelectedSpots.Add(spot);
}
}
e.Handled = true;
if ((Keyboard.Modifiers & ModifierKeys.Shift) != 0)
{
// When the shift key is held down special zooming logic is executed in content_MouseDown,
// so don't handle mouse input here.
return;
}
if (mouseHandlingMode != MouseHandlingMode.None)
{
// We are in some other mouse handling mode, don't do anything.
return;
}
//mouseHandlingMode = MouseHandlingMode.DraggingEllipse;
//origContentMouseDownPoint = e.GetPosition(ContentListBox);
//ellipse.CaptureMouse();
}