ArrowLineBase 구조체 예제

ArrowLineBase 구조체 예제

 

public abstract class ArrowLineBase : Shape
    {
        protected PathGeometry pathgeo;
        protected PathFigure pathfigLine;
        protected PolyLineSegment polysegLine;

        PathFigure pathfigHead1;
        PolyLineSegment polysegHead1;
        PathFigure pathfigHead2;
        PolyLineSegment polysegHead2;

                                public static readonly DependencyProperty ArrowAngleProperty =
            DependencyProperty.Register("ArrowAngle",
                typeof(double), typeof(ArrowLineBase),
                new FrameworkPropertyMetadata(45.0,
                        FrameworkPropertyMetadataOptions.AffectsMeasure));

                                public double ArrowAngle
        {
            set { SetValue(ArrowAngleProperty, value); }
            get { return (double)GetValue(ArrowAngleProperty); }
        }

                                public static readonly DependencyProperty ArrowLengthProperty =
            DependencyProperty.Register("ArrowLength",
                typeof(double), typeof(ArrowLineBase),
                new FrameworkPropertyMetadata(12.0,
                        FrameworkPropertyMetadataOptions.AffectsMeasure));

                                public double ArrowLength
        {
            set { SetValue(ArrowLengthProperty, value); }
            get { return (double)GetValue(ArrowLengthProperty); }
        }

                                public static readonly DependencyProperty ArrowEndsProperty =
            DependencyProperty.Register("ArrowEnds",
                typeof(ArrowEnds), typeof(ArrowLineBase),
                new FrameworkPropertyMetadata(ArrowEnds.End,
                        FrameworkPropertyMetadataOptions.AffectsMeasure));

                                        public ArrowEnds ArrowEnds
        {
            set { SetValue(ArrowEndsProperty, value); }
            get { return (ArrowEnds)GetValue(ArrowEndsProperty); }
        }

                                public static readonly DependencyProperty IsArrowClosedProperty =
            DependencyProperty.Register("IsArrowClosed",
                typeof(bool), typeof(ArrowLineBase),
                new FrameworkPropertyMetadata(false,
                        FrameworkPropertyMetadataOptions.AffectsMeasure));

                                        public bool IsArrowClosed
        {
            set { SetValue(IsArrowClosedProperty, value); }
            get { return (bool)GetValue(IsArrowClosedProperty); }
        }

                                public ArrowLineBase()
        {
            pathgeo = new PathGeometry();

            pathfigLine = new PathFigure();
            polysegLine = new PolyLineSegment();
            pathfigLine.Segments.Add(polysegLine);

            pathfigHead1 = new PathFigure();
            polysegHead1 = new PolyLineSegment();
            pathfigHead1.Segments.Add(polysegHead1);

            pathfigHead2 = new PathFigure();
            polysegHead2 = new PolyLineSegment();
            pathfigHead2.Segments.Add(polysegHead2);
        }

                                protected override Geometry DefiningGeometry
        {
            get
            {
                int count = polysegLine.Points.Count;

                if (count > 0)
                {
                                        if ((ArrowEnds & ArrowEnds.Start) == ArrowEnds.Start)
                    {
                        Point pt1 = pathfigLine.StartPoint;
                        Point pt2 = polysegLine.Points[0];
                        pathgeo.Figures.Add(CalculateArrow(pathfigHead1, pt2, pt1));
                    }

                                        if ((ArrowEnds & ArrowEnds.End) == ArrowEnds.End)
                    {
                        Point pt1 = count == 1 ? pathfigLine.StartPoint :
                                                 polysegLine.Points[count - 2];
                        Point pt2 = polysegLine.Points[count - 1];
                        pathgeo.Figures.Add(CalculateArrow(pathfigHead2, pt1, pt2));
                    }
                }
                return pathgeo;
            }
        }