public override void OnPointerPressed(IPointerEventArgs e)
{
if (e.CurrentPoint.Properties.PointerUpdateKind == PointerUpdateKind.LeftButtonPressed)
{
m_Dragging = true;
m_LastViewPosition = e.Position;
e.Handled = true;
}
}
public override void OnPointerPressed(IPointerEventArgs e)
{
IPointerPoint point = e.CurrentPoint;
IPointerPointProperties props = point.Properties;
if (props.PointerUpdateKind == PointerUpdateKind.LeftButtonPressed &&
!props.IsMiddleButtonPressed && !props.IsRightButtonPressed)
{
m_Pointer = e.Pointer;
m_Position = point.Position;
}
}
public override void OnPointerMoved(IPointerEventArgs e)
{
Guard.Against.Null(Scene, nameof(Scene));
Coordinate pos = e.Position;
if (m_Dragging && e.CurrentPoint.Properties.IsLeftButtonPressed)
{
Scene.PanView((m_LastViewPosition.X - pos.X) * Scene.XMultiplier,
(m_LastViewPosition.Y - pos.Y) * Scene.YMultiplier);
e.Handled = true;
}
else
{
m_Dragging = false;
}
m_LastViewPosition = pos;
}
public override void OnPointerMoved(IPointerEventArgs e)
{
if (e.Pointer.Equals(m_Pointer))
{
if (e.CurrentPoint.Position.Distance(m_Position) > 5)
{
m_Pointer = null;
m_Position = null;
}
else
{
if (!e.CurrentPoint.Properties.IsLeftButtonPressed)
{
HandleLeftButtonUp(e);
}
e.Handled = true;
}
}
}
private void HandleLeftButtonUp(IPointerEventArgs e)
{
if (m_Pointer != null)
{
ISpatialDocument doc = Scene?.Document;
if (doc != null)
{
m_Hits.Clear();
Coordinate pos = Scene.ViewToWorld(m_Position);
doc.HitTest(pos.X, pos.Y, 5, 1 / Scene.Scale,
m_HitTestSpec, m_Hits);
bool multi = e.KeyModifiers.HasFlag(KeyModifiers.Shift);
if (m_Hits.Count == 1)
{
if (!multi)
{
doc.DeselectAll();
}
var pair = m_Hits.First();
IItemsLayer layer = pair.Value;
ISpatialItem item = pair.Key;
if (layer.IsItemSelected(item))
{
if (multi)
{
layer.DeselectItem(item);
}
}
else
{
layer.SelectItem(item);
}
}
else
{
doc.DeselectAll();
}
}
}
}
public virtual void OnPointerPressed(IPointerEventArgs e)
{
}
public virtual void OnPointerMoved(IPointerEventArgs e)
{
}
public void OnPointerPressed(IPointerEventArgs e)
{
ApplyToInteractions(i => i.OnPointerPressed(e), e);
}