protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
var pos = MouseUtils.GetCursorPos();
if (_isMouseDown && Cursor == Cursors.SizeAll)
{
Left += (pos.X - _mouseOldPos.X);
Top += (pos.Y - _mouseOldPos.Y);
_mouseOldPos = MouseUtils.GetCursorPos();
return;
}
else if (_isMouseDown && (Cursor == Cursors.SizeNWSE || Cursor == Cursors.SizeNESW))
{
ChangeCtrlSizeAndPos(_mouseOldPos, pos, _resizePos);
_mouseOldPos = MouseUtils.GetCursorPos();
return;
}
var localPos = PointToClient(pos);
if (CornerRegionList[1].Contains(localPos) || CornerRegionList[2].Contains(localPos))
{
Cursor = Cursors.SizeNESW;
}
else if (CornerRegionList[0].Contains(localPos) || CornerRegionList[3].Contains(localPos))
{
Cursor = Cursors.SizeNWSE;
}
else
{
Cursor = Cursors.Default;
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
_isMouseDown = true;
_mouseOldPos = MouseUtils.GetCursorPos();
if (Cursor != Cursors.SizeNWSE && Cursor != Cursors.SizeNESW)
{
this.Cursor = Cursors.SizeAll;
}
var ctrlPos = PointToClient(_mouseOldPos);
_resizePos = CornerRegionList.FindIndex(c => c.Contains(ctrlPos));
Debug.WriteLine($"_resizePos = {_resizePos}");
}