/// <summary>Called when the mouse position is updated</summary>
/// <param name="x">X coordinate of the mouse cursor on the GUI</param>
/// <param name="y">Y coordinate of the mouse cursor on the GUI</param>
protected override void OnMouseMoved(float x, float y)
{
base.OnMouseMoved(x, y);
if (_beingResized)
{
ResizeTo(x, y);
}
else
{
// Remember the current mouse position so we know where the user picked
// up the control when a drag operation begins
_grabX = x;
_grabY = y;
}
if (IsMouseOnBorder(x, y) && !_beingResized && _enableResizing)
{
SetResizingDirection();
}
else if (_resizingSides != ResizingSides.None && !_beingResized)
{
_resizingSides = ResizingSides.None;
SetCursorForResize(_resizingSides);
}
}
private void SetResizingDirection()
{
var _oldResizingSides = _resizingSides;
_resizingDirections = ResizingDirections.None;
_resizingSides = ResizingSides.None;
if (_grabX >= GetAbsoluteBounds().Size.Width - _borderThickness)
{
_resizingDirections |= ResizingDirections.Horizontal;
_resizingSides |= ResizingSides.Right;
}
if (_grabX <= _borderThickness)
{
_resizingDirections |= ResizingDirections.Horizontal;
_resizingSides |= ResizingSides.Left;
}
if (_grabY >= GetAbsoluteBounds().Size.Height - _borderThickness)
{
_resizingDirections |= ResizingDirections.Vertical;
_resizingSides |= ResizingSides.Bottom;
}
if (_grabY <= _borderThickness)
{
_resizingDirections |= ResizingDirections.Vertical;
_resizingSides |= ResizingSides.Top;
}
if (_oldResizingSides != _resizingSides)
{
SetCursorForResize(_resizingSides);
}
}
protected override void OnMouseLeft(float x, float y)
{
if (_beingResized)
{
ResizeTo(x, y);
}
else
{
base.OnMouseLeft(x, y);
_resizingSides = ResizingSides.None;
SetCursorForResize(_resizingSides);
}
}
public virtual void SetCursorForResize(ResizingSides resizingSides)
{
//No Default behavior
}
