using System.Drawing;

namespace Dongke.IBOSS.Basics.FlowSetting
{
    /// <summary>
    /// 线段
    /// </summary>
    public class FlowLine : FlowItem
    {
        #region 成员变量

        /// <summary>
        /// 起点坐标
        /// </summary>
        private Point _pointBegin = Point.Empty;
        /// <summary>
        /// 终点坐标
        /// </summary>
        private Point _pointEnd = Point.Empty;
        /// <summary>
        /// 线的颜色
        /// </summary>
        private Color _lineColor = Consts.LINE_COLOR_DEFAULT;
        /// <summary>
        /// 线宽
        /// </summary>
        private int _lineWidth = Consts.LINE_WIDTH_DEFAULT;
        /// <summary>
        /// 起始节点连接点
        /// </summary>
        private AnchorKind _anchorBegin = AnchorKind.None;
        /// <summary>
        /// 终止节点连接点
        /// </summary>
        private AnchorKind _anchorEnd = AnchorKind.None;
        /// <summary>
        /// 起始节点（不保存xml）
        /// </summary>
        private FlowNode _nodeBegin = null;
        /// <summary>
        /// 终止节点（不保存xml）
        /// </summary>
        private FlowNode _nodeEnd = null;
        /// <summary>
        /// 加载流程时使用，临时保存NodeCode，把line链接到node时利用。
        /// </summary>
        internal string NodeCodeBegin = null;
        /// <summary>
        /// 加载流程时使用，临时保存NodeCode，把line链接到node时利用。
        /// </summary>
        internal string NodeCodeEnd = null;

        #endregion 成员变量

        #region 构造函数

        /// <summary>
        /// 新线段
        /// </summary>
        /// <param name="manager">流程项目管理</param>
        internal FlowLine(ItemManager manager)
            : base(manager)
        {
            this.ShowName = false;
            this.Name = "连线" + this.ItemID;
        }

        /// <summary>
        /// 导入的线段
        /// </summary>
        /// <param name="manager">流程项目管理</param>
        /// <param name="itemID">项目ID</param>
        /// <param name="onlyCode">唯一编码</param>
        internal FlowLine(ItemManager manager, int itemID, string onlyCode)
            : base(manager, itemID, onlyCode)
        {
            this.ShowName = false;
            this.Name = "连线" + this.ItemID;
        }

        #endregion 构造函数

        #region 属性

        /// <summary>
        /// 起点坐标
        /// </summary>
        public Point PointBegin
        {
            get
            {
                return this._pointBegin;
            }
            internal set
            {
                this._pointBegin = value;
            }
        }

        /// <summary>
        /// 终点坐标
        /// </summary>
        public Point PointEnd
        {
            get
            {
                return this._pointEnd;
            }
            internal set
            {
                this._pointEnd = value;
            }
        }

        /// <summary>
        /// 线的颜色
        /// </summary>
        public Color LineColor
        {
            get
            {
                return this._lineColor;
            }
            set
            {
                this._lineColor = value;
            }
        }

        /// <summary>
        /// 线宽
        /// </summary>
        public int LineWidth
        {
            get
            {
                return this._lineWidth;
            }
            set
            {
                this._lineWidth = value < 1 ? 1 : value;
            }
        }

        /// <summary>
        /// 起始节点
        /// </summary>
        public FlowNode NodeBegin
        {
            get
            {
                return this._nodeBegin;
            }
            internal set
            {
                this._nodeBegin = value;
            }
        }

        /// <summary>
        /// 终止节点
        /// </summary>
        public FlowNode NodeEnd
        {
            get
            {
                return this._nodeEnd;
            }
            internal set
            {
                this._nodeEnd = value;
            }
        }

        /// <summary>
        /// 起始节点连接点
        /// </summary>
        public AnchorKind AnchorBegin
        {
            get
            {
                return this._anchorBegin;
            }
            internal set
            {
                this._anchorBegin = value;
            }
        }

        /// <summary>
        /// 终止节点连接点
        /// </summary>
        public AnchorKind AnchorEnd
        {
            get
            {
                return this._anchorEnd;
            }
            internal set
            {
                this._anchorEnd = value;
            }
        }

        #endregion 属性

        #region 公有方法

        /// <summary>
        /// 获取选择状态样式范围
        /// </summary>
        /// <returns>选择状态样式范围</returns>
        public override Rectangle[] GetSelectedStyle()
        {
            int styleSize = Consts.SELECTEDSTYLE_WIDTH;
            int styleSizeHalf = Consts.SELECTEDSTYLE_WIDTH_HALF;

            Rectangle[] rects = new Rectangle[2];

            rects[0] = new Rectangle(this.PointBegin.X - styleSizeHalf, this.PointBegin.Y - styleSizeHalf, styleSize, styleSize);
            rects[1] = new Rectangle(this.PointEnd.X - styleSizeHalf, this.PointEnd.Y - styleSizeHalf, styleSize, styleSize);

            return rects;
        }

        #endregion 公有方法
    }
}