/// <summary>
/// Handles the Key Down situation
/// </summary>
/// <param name="e"></param>
protected override void OnKeyDown(KeyEventArgs e)
{
// Allow panning if the space is pressed.
if (e.KeyCode == Keys.Space && !isPanningTemporarily)
{
previousFunction = Map.FunctionMode;
Map.FunctionMode = FunctionMode.Pan;
isPanningTemporarily = true;
}
// Arrow-Key Panning
if (e.KeyCode == Keys.Up || e.KeyCode == Keys.Down || e.KeyCode == Keys.Left || e.KeyCode == Keys.Right)
{
if (!BusySet)
{
Map.IsBusy = true;
BusySet = true;
}
var _source = Map.MapFrame.View;
switch (e.KeyCode)
{
case Keys.Up:
Map.MapFrame.View = new Rectangle(_source.X, _source.Y - 20, _source.Width, _source.Height);
break;
case Keys.Down:
Map.MapFrame.View = new Rectangle(_source.X, _source.Y + 20, _source.Width, _source.Height);
break;
case Keys.Left:
Map.MapFrame.View = new Rectangle(_source.X - 20, _source.Y, _source.Width, _source.Height);
break;
case Keys.Right:
Map.MapFrame.View = new Rectangle(_source.X + 20, _source.Y, _source.Width, _source.Height);
break;
}
KeyPanCount++;
if (KeyPanCount == 16)
{
Map.MapFrame.ResetExtents();
KeyPanCount = 0;
}
else
{
Map.Invalidate();
}
}
// Zoom Out
if (e.KeyCode == (Keys.LButton | Keys.MButton | Keys.Back | Keys.ShiftKey | Keys.Space | Keys.F17) || e.KeyCode == Keys.Subtract)
{
Extent MaxExtent = Map.GetMaxExtent();
if ((Map.IsZoomedToMaxExtent == true))
{
}
else
{
Map.IsBusy = true;
Rectangle r = Map.MapFrame.View;
r.Inflate(r.Width / 2, r.Height / 2);
Map.MapFrame.View = r;
Map.MapFrame.ResetExtents();
Map.IsBusy = false;
}
}
// Zoom In
if (e.KeyCode == (Keys.LButton | Keys.RButton | Keys.Back | Keys.ShiftKey | Keys.Space | Keys.F17) || e.KeyCode == Keys.Add)
{
Map.IsBusy = true;
Map.IsZoomedToMaxExtent = false;
Rectangle r = Map.MapFrame.View;
r.Inflate(-r.Width / 4, -r.Height / 4);
Map.MapFrame.View = r;
Map.MapFrame.ResetExtents();
Map.IsBusy = false;
}
}