using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace HySoft.FlowEditor
{
    public partial class FlowNodeControl : UserControl
    {
        #region 字段
        GraphicsPath _graphicsPath;
        ContentAlignment _textAlign;
        FlowNode _flowNode;
        bool _bSelected;
        Image _image;
        Image _selectedImage;
        /// <summary>
        /// 记录x坐标
        /// </summary>
        Point _movePos;
        bool _bMoveFlag = false;
        #endregion

        #region 属性
        /// <summary>
        /// 名字
        /// </summary>
        public string NodeName
        {
            get { return this.label.Text; }
            set { this.label.Text = value; }
        }
        //2017-5-8
        /// <summary>
        /// 节点描述
        /// </summary>
        public string NodeNote
        {
            get { return this.lblNote.Text; }
            set
            { this.lblNote.Text = value; }
        }

        //2017-5-11
        /// <summary>
        /// 节点ID
        /// </summary>
        public string NodeID
        {
            get { return this.lblID.Text; }
            set
            { this.lblID.Text = value; }
        }

        /// <summary>
        /// 文本放置方式
        /// </summary>
        public ContentAlignment TextAlign
        {
            get { return _textAlign; }
            set { _textAlign = value; }
        }
        /// <summary>
        /// 图像
        /// </summary>
        public System.Drawing.Image Image
        {
            get { return _image; }
            set 
            {
                _image = value;
                if(!_bSelected)
                    this.BackgroundImage = _image;
            }
        }
        /// <summary>
        /// 被选中图像
        /// </summary>
        public System.Drawing.Image SelectdImage
        {
            get { return _selectedImage; }
            set
            {
                _selectedImage = value; 
                if (_bSelected)
                    this.BackgroundImage = _selectedImage;
            }
        }

        /// <summary>
        /// 中心点坐标
        /// </summary>
        public Point CenterPoint
        {
            get { return new Point(Location.X + (Size.Width/2), Location.Y+(Size.Height/2)); }
            set
            {
                Location = new Point(value.X - (Size.Width / 2), value.Y - (Size.Height / 2));
            }
        }
        /// <summary>
        /// 顶点
        /// </summary>
        public Point TopPoint
        {
            get
            {
                return new Point(CenterPoint.X, CenterPoint.Y - (Size.Height / 2));
            }
        }

        /// <summary>
        /// 底点
        /// </summary>
        public Point BottomPoint
        {
            get
            {
                return new Point(CenterPoint.X, CenterPoint.Y + (Size.Height / 2));
            }
        }

        /// <summary>
        /// 左点
        /// </summary>
        public Point LeftPoint
        {
            get
            {
                return new Point(CenterPoint.X - (Size.Width / 2), CenterPoint.Y);
            }
        }
        /// <summary>
        /// 右点
        /// </summary>
        public Point RightPoint
        {
            get
            {
                return new Point(CenterPoint.X + (Size.Width / 2), CenterPoint.Y);
            }
        }
        /// <summary>
        /// 控件是否在移动中
        /// </summary>
        public bool BeMoveing
        {
            get { return _bMoveFlag; }
            set { _bMoveFlag = value; }
        }
        /// <summary>
        /// 移动的偏移量
        /// </summary>
        public Point MovePos
        {
            get { return _movePos; }
            set { _movePos = value; }
        }
        /// <summary>
        /// 是否被选中
        /// </summary>
        public bool BeSelected
        {
            get { return _bSelected; }
            set 
            {
                if (_bSelected != value)
                {
                    _bSelected = value;
                    if (_bSelected)
                        BackgroundImage = _selectedImage;
                    else
                        BackgroundImage = _image;
                }
            }
        }
        /// <summary>
        /// 与该控件绑定的流程节点
        /// </summary>
        public FlowNode FlowNode
        {
            get { return _flowNode; }
            //set
            //{ this.lblID.Text = value.ID; }
        }

        #endregion

        #region 公开方法
        /// <summary>
        /// 构造方法
        /// </summary>
        public FlowNodeControl()
        {
            _flowNode = null;
            _textAlign = ContentAlignment.BottomCenter;
            InitializeComponent();
            BackgroundImageLayout = ImageLayout.None;//.Stretch2017-5-11
           BackgroundImage = _image;        
        }
        /// <summary>
        /// 构造方法
        /// </summary>
        /// <param name="flowNode">关联的节点</param>
        public FlowNodeControl(FlowNode flowNode)
        {
            _flowNode = flowNode;
            _textAlign = ContentAlignment.BottomCenter;
            
            InitializeComponent();
            //this.lblID.Text = flowNode.ID;
            BackgroundImageLayout = ImageLayout.None;//.Stretch2017-5-11
            BackgroundImage = _image;           
        }

        #endregion

        #region 私有方法

        #endregion

        #region 控件响应事件
        private void pictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            base.OnMouseDown(e);
        }

        private void pictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            base.OnMouseMove(e);
        }

        private void pictureBox_MouseUp(object sender, MouseEventArgs e)
        {
            base.OnMouseUp(e);
        }

        private void label_MouseDown(object sender, MouseEventArgs e)
        {
            base.OnMouseDown(e);
        }

        private void label_MouseMove(object sender, MouseEventArgs e)
        {
            base.OnMouseMove(e);
        }

        private void label_MouseUp(object sender, MouseEventArgs e)
        {
            base.OnMouseUp(e);
        }

        private void FlowNodeControl_MouseDown(object sender, MouseEventArgs e)
        {
            //_bMoveFlag = true;//已经按下.
            //_xPos = e.X;//当前x坐标.
            //_yPos = e.Y;//当前y坐标.
            base.OnMouseDown(e);
        }

        private void FlowNodeControl_MouseMove(object sender, MouseEventArgs e)
        {
            if (_bMoveFlag)
            {           
                //this.Left += Convert.ToInt16(e.X - _xPos);//设置x坐标.
                //this.Top += Convert.ToInt16(e.Y - _yPos);//设置y坐标.
            }
        }

        private void FlowNodeControl_MouseUp(object sender, MouseEventArgs e)
        {
            _bMoveFlag = false;
        }




        #endregion

        
    }
}