/// <summary>
/// function for moving the control
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
private void ProcessMove(double x, double y)
{
var width = _partOverlay./*RenderSize.*/ Width;
var height = _partOverlay./*RenderSize.*/ Height;
var offset = TreeExtensions.GetOffsetFrom(this, _partWindow);
//var offset = VisualTreeHelper.GetOffset(this.partWindow);
//todo correct me
var widthOffset = offset.M11; // offset.X;
var heightOffset = offset.M12; //offset.Y;
var realX = _moveTransform.X + x + widthOffset;
var realY = _moveTransform.Y + y + heightOffset;
const int extraGap = 5;
var widthGap = Math.Max(_icon?./*Actual*/ Width + 5 ?? 30, 30);
var heightGap = Math.Max(this.TitleBarHeight, 30);
var changeX = _moveTransform.X;
var changeY = _moveTransform.Y;
if (realX < (0 + extraGap))
{
changeX = -widthOffset + extraGap;
}
else if (realX > (width - widthGap - extraGap))
{
changeX = width - widthOffset - widthGap - extraGap;
}
else
{
changeX += x;
}
if (realY < (0 + extraGap))
{
changeY = -heightOffset + extraGap;
}
else if (realY > (height - heightGap - extraGap))
{
changeY = height - heightOffset - heightGap - extraGap;
}
else
{
changeY += y;
}
if (!Equals(changeX, _moveTransform.X) || !Equals(changeY, _moveTransform.Y))
{
this.SetValue(OffsetXProperty, changeX);
this.SetValue(OffsetYProperty, changeY);
this.InvalidateArrange();
}
}