public void OnKeyDown(System.Windows.Input.KeyEventArgs e)
{
if (ImageSurface == null || !ImageSurface.Focused)
{
return;
}
switch (e.Key)
{
case Key.Escape:
if (ImageSurface.IsDrawingZoomRect)
{
ImageSurface.IsDrawingZoomRect = false;
ImageSurface.ZoomRect(false);
ImageSurface.Invalidate();
e.Handled = true;
}
else if (IsFullScreen)
{
ToggleFullscreen();
ImageSurface.Invalidate();
e.Handled = true;
}
break;
case Key.Left:
if (ImageSurface.Focused)
{
ImageSurface.OnLeft();
e.Handled = true;
}
break;
case Key.Right:
if (ImageSurface.Focused)
{
ImageSurface.OnRight();
e.Handled = true;
}
break;
case Key.Up:
if (ImageSurface.Focused)
{
ImageSurface.OnUp();
e.Handled = true;
}
break;
case Key.Down:
if (ImageSurface.Focused)
{
ImageSurface.OnDown();
e.Handled = true;
}
break;
case Key.Add:
if (ImageSurface.Focused)
{
ImageSurface.Zoom(15f, true, true);
}
break;
case Key.Subtract:
if (ImageSurface.Focused)
{
ImageSurface.Zoom(-15f, true, true);
}
break;
default:
break;
}
}