/// <summary> Event handler for pressing the mouse button. A double click with the left mouse button results in
/// zooming in the map. A double click with the right mouse button results in zooming out the map. Pressing the
/// left button and the shift key, the zooming rectangle is shown on the map. </summary>
/// <param name="sender"> Sender of the MouseDown event. </param>
/// <param name="e"> Event parameters. </param>
private void source_MouseDown(object sender, MouseButtonEventArgs e)
{
if (!IsActive)
{
return;
}
mapView.Focus();
// NEW: Skip MouseDragMode == None
if (MouseDragMode == DragMode.None)
{
e.Handled = true;
return;
}
if (ZoomOnDoubleClick && e.ClickCount == 2)
{
Point p = MapView.CanvasToPtvMercator(MapView.GeoCanvas, e.GetPosition(MapView.GeoCanvas));
if (e.RightButton == MouseButtonState.Pressed)
{
MapView.ZoomAround(p, MapView.FinalZoom + -1, Map.UseAnimation);
e.Handled = true;
return;
}
if (e.LeftButton == MouseButtonState.Pressed)
{
MapView.ZoomAround(p, MapView.FinalZoom + 1, Map.UseAnimation);
e.Handled = true;
return;
}
}
// Save starting point, used later when determining how much to scroll.
ScreenStartPoint = e.GetPosition(mapView);
WorldStartPoint = mapView.CanvasToPtvMercator(mapView, e.GetPosition(mapView));
// NEW: check for MouseDragMode
if (e.LeftButton == MouseButtonState.Pressed && (MouseDragMode == DragMode.Select ||
MouseDragMode == DragMode.SelectOnShift && (Keyboard.Modifiers & ModifierKeys.Shift) > 0)) // was && (Keyboard.Modifiers & ModifierKeys.Shift) > 0))
{
mapView.Cursor = Cursors.Arrow;
if (dragRectangle != null)
{
mapView.ForePaneCanvas.Children.Remove(dragRectangle);
}
dragRectangle = new Rectangle();
dragRectangle.IsHitTestVisible = false;
dragRectangle.Fill = new SolidColorBrush(Color.FromArgb(0x3e, 0x11, 0x57, 0xdc));
dragRectangle.Stroke = new SolidColorBrush(Color.FromArgb(0x55, 0x07, 0x81, 0xf7));
dragRectangle.StrokeDashArray = new DoubleCollection(new double[] { 20, 8 });
dragRectangle.StrokeEndLineCap = PenLineCap.Round;
dragRectangle.StrokeDashCap = PenLineCap.Round;
dragRectangle.StrokeThickness = 1.5;
dragRectangle.RadiusX = 8;
dragRectangle.RadiusY = 8;
Panel.SetZIndex(dragRectangle, 266);
Canvas.SetLeft(dragRectangle, ScreenStartPoint.X);
Canvas.SetTop(dragRectangle, ScreenStartPoint.Y);
mapView.ForePaneCanvas.Children.Add(dragRectangle);
dragMode = DragMode.Select;
mapView.CaptureMouse();
}
else if (e.LeftButton == MouseButtonState.Pressed && mapView.CaptureMouse())
{
mapView.Cursor = Cursors.Hand;
dragMode = DragMode.Pan;
wasPanned = false;
}
}
