/// <summary>
/// Process events for Mouse or Touch input.
/// </summary>
/// <param name="inputPos">location of cursor</param>
/// <param name="inputPressed">down this frame</param>
/// <param name="inputReleased">up this frame</param>
/// <param name="inputMoved">cursor in a different location</param>
/// <param name="lastOver">last element that the cursor was over, ref is saved here for next update</param>
void updateInputPoint(Vector2 inputPos, bool inputPressed, bool inputReleased, bool inputMoved, ref Element lastOver)
{
var over = hit(inputPos);
CurrentlyOver = over;
if (over != null)
{
handleMouseWheel(over);
}
if (inputPressed)
{
pressed = true;
updateInputDown(inputPos, over);
}
if (inputMoved)
{
DragAndDropSystem.UpdateDrag(inputPos);
updateInputMoved(inputPos, over, lastOver);
}
if (inputReleased)
{
pressed = false;
updateInputReleased(inputPos);
}
lastOver = over;
}
/// <summary>
/// Mouse or touch is being released this frame.
/// </summary>
/// <param name="inputPos">location under cursor</param>
void updateInputReleased(Vector2 inputPos)
{
for (var i = _inputFocusListeners.Count - 1; i >= 0; i--)
{
((IInputListener)_inputFocusListeners[i]).onMouseUp(_inputFocusListeners[i].stageToLocalCoordinates(inputPos));
if (DragAndDropSystem.DraggedElement != null)
{
IDropTarget myResult = CurrentlyOver as IDropTarget;
if (myResult != null && myResult.CanAccept(DragAndDropSystem.DraggedElement))
{
DragAndDropSystem.AcceptElement(myResult);
}
}
}
_inputFocusListeners.Clear();
}
/// <summary>
/// Mouse or touch is being moved.
/// </summary>
/// <param name="inputPos">location of cursor</param>
/// <param name="over">element under cursor</param>
/// <param name="lastOver">element that was previously under the cursor</param>
void updateInputMoved(Vector2 inputPos, Element over, Element lastOver)
{
for (var i = _inputFocusListeners.Count - 1; i >= 0; i--)
{
((IInputListener)_inputFocusListeners[i]).onMouseMoved(_inputFocusListeners[i].stageToLocalCoordinates(inputPos));
}
if (pressed)
{
if (over != null)
{
IDraggableElement myOver = over as IDraggableElement;
if (myOver != null)
{
DragAndDropSystem.StartDrag(inputPos, this, myOver);
}
}
}
if (over != lastOver)
{
(over as IInputListener)?.onMouseEnter();
(lastOver as IInputListener)?.onMouseExit();
}
}
/// <summary>
/// this should be called when the Component is removed to ensure all objects are freed
/// </summary>
public void dispose()
{
root.clear();
DragAndDropSystem.ResetDragged();
}
