/// <summary>
/// Checks that drawed point or line in layer bounds,
/// if not increase bounds to contains drawing
/// </summary>
/// <param name="points">Points of drawing</param>
private void CheckLayerPostionAndSize(Point[] points)
{
if (HasNoLayers)
{
return;
}
var needToChangeSize = false;
var halfThickness = Thickness / 2;
var minX = points.Min(c => c.X) - halfThickness;
var minY = points.Min(c => c.Y) - halfThickness;
var maxX = points.Max(c => c.X) + halfThickness;
var maxY = points.Max(c => c.Y) + halfThickness;
var newPosition = SelectedLayer.Position;
var newSize = SelectedLayer.Size;
if (minX < SelectedLayer.Position.X)
{
newPosition.X = minX;
needToChangeSize = true;
}
if (minY < SelectedLayer.Position.Y)
{
newPosition.Y = minY;
needToChangeSize = true;
}
if (maxX >= SelectedLayer.Position.X + SelectedLayer.Size.Width)
{
newSize.Width = maxX - newPosition.X;
needToChangeSize = true;
}
if (maxY >= SelectedLayer.Position.Y + SelectedLayer.Size.Height)
{
newSize.Height = maxY - newPosition.Y;
needToChangeSize = true;
}
if (needToChangeSize)
{
var dx = SelectedLayer.Position.X - newPosition.X;
var dy = SelectedLayer.Position.Y - newPosition.Y;
newSize.Width += dx;
newSize.Height += dy;
SelectedLayer.ChangeSizeAndPosition(newPosition, newSize);
}
}