public virtual void ProcessEvents(Event e)
{
if (e.isKey)
{
OnKeyDown(this, e);
return;
}
if (!viewRect.Contains(e.mousePosition))
{
return;
}
switch (e.button)
{
case 0:
switch (e.type)
{
case EventType.MouseDown:
OnLeftMouseDown?.Invoke(this, e);
break;
case EventType.MouseDrag:
OnLeftMouseDrag?.Invoke(this, e);
break;
case EventType.MouseUp:
OnLeftMouseUp?.Invoke(this, e);
break;
}
break;
case 1:
switch (e.type)
{
case EventType.MouseDown:
OnRightMouseDown?.Invoke(this, e);
break;
case EventType.MouseDrag:
OnRightMouseDrag?.Invoke(this, e);
break;
case EventType.MouseUp:
OnRightMouseUp?.Invoke(this, e);
break;
}
break;
}
}
private IntPtr MouseHookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
{
return(CallNextHookEx(_hookHandle, nCode, wParam, lParam));
}
switch ((MouseMessages)wParam)
{
case MouseMessages.WM_LBUTTONDOWN:
OnLeftMouseDown?.Invoke(this, null);
break;
case MouseMessages.WM_RBUTTONDOWN:
OnRightMouseDown?.Invoke(this, null);
break;
}
return(CallNextHookEx(_hookHandle, nCode, wParam, lParam));
}
private void MouseHook_OnLeftMouseDown(object sender, Point p)
{
DisposeMouseHook();
OnLeftMouseDown?.Invoke(this, p);
}
/// <summary>Register background left mouse down event handler.</summary>
/// <param name="callback">callback function </param>
public static void ObserveLeftMouseDown(OnLeftMouseDown callback)
{
RemoveOnLeftMouseDown();
_leftMouseDownGcHandle = GCHandle.Alloc(callback, GCHandleType.Normal);
onLeftMouseDown((IntPtr)_leftMouseDownGcHandle.Value, OnLeftMouseDownFromNative);
}
