using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using PaintDotNet.Annotation.Enum;

namespace PaintDotNet.Annotation.ImageCollect
{
    public class DrawLocationCross : DrawObject
    {
        private int m_width;
        private int m_height;

        private int m_z;
        private Dictionary<int, object> points;
        public DrawLocationCross(ISurfaceBox surfaceBox, int x, int y, int width, int height, int z) : base()
        {
            this.objectType = DrawClass.Stitch;
            this.drawToolType = DrawToolType.DrawLocationCross;
            this.points = new Dictionary<int, object>();

            m_z = z;
            m_width = width;
            m_height = height;

            rectangle.X = x;
            rectangle.Y = y;
            rectangle.Width = width;
            rectangle.Height = height;

            Initialize();
        }

        public override DrawObject Clone()
        {
            DrawLocationCross drawRectangle = new DrawLocationCross(ISurfaceBox, 0, 0, 1, 0, 0);
            drawRectangle.objectType = DrawClass.Stitch;
            drawRectangle.drawToolType = DrawToolType.DrawLocationCross;
            drawRectangle.ISurfaceBox = this.ISurfaceBox;
            drawRectangle.rectangle = this.rectangle;
            FillDrawObjectFields(drawRectangle);
            return drawRectangle;
        }

        public override RectangleF GetBoundingBox()
        {
            return rectangle;
        }

        public override void Draw(Graphics g)
        {
            //样式暂时写死,没有对应样式设置
            int dashStyle = 0;   //线形
            int thickness = 5;   //粗细
            int color = -59111;  //颜色

            Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
            pen.DashStyle = (DashStyle)dashStyle;

            float lineLength = m_width < m_height ? m_width * 0.3f : m_height * 0.3f;//线长

            float x = rectangle.X + (m_width - lineLength) / 2;
            float y = rectangle.Y + (m_height - lineLength) / 2;

            g.DrawLine(pen, x, rectangle.Y + m_height / 2, x + lineLength, rectangle.Y + m_height / 2);
            g.DrawLine(pen, rectangle.X + m_width / 2, y, rectangle.X + m_width / 2, y + lineLength);

            if(this.points.Count > 0)
            {
                this.points[0] = this.ISurfaceBox.ScalePointToRulerPoint(new PointF(rectangle.X + m_width / 2, rectangle.Y + m_height / 2));
            }
            else
            {
                this.points.Add(0, this.ISurfaceBox.ScalePointToRulerPoint(new PointF(rectangle.X + m_width / 2, rectangle.Y + m_height / 2)));
                this.points.Add(1, m_z);
            }
        }

        protected void SetRectangle(float x, float y, float width, float height)
        {
            this.rectangle.X = x;
            this.rectangle.Y = y;
            this.rectangle.Width = width;
            this.rectangle.Height = height;
        }

        /// <summary>
        /// Get number of handles
        /// </summary>
        public override int HandleCount
        {
            get
            {
                return 8;
            }
        }


        /// <summary>
        /// Get handle pointscroll by 1-based number
        /// </summary>
        /// <param name="handleNumber"></param>
        /// <returns></returns>
        public override PointF GetHandle(int handleNumber)
        {
            float x, y, xCenter, yCenter;

            xCenter = this.rectangle.X + this.rectangle.Width / 2;
            yCenter = this.rectangle.Y + this.rectangle.Height / 2;
            x = this.rectangle.X;
            y = this.rectangle.Y;

            switch (handleNumber)
            {
                case 1:
                    x = this.rectangle.X;
                    y = this.rectangle.Y;
                    break;
                case 2:
                    x = xCenter;
                    y = this.rectangle.Y;
                    break;
                case 3:
                    x = this.rectangle.Right;
                    y = this.rectangle.Y;
                    break;
                case 4:
                    x = this.rectangle.Right;
                    y = yCenter;
                    break;
                case 5:
                    x = this.rectangle.Right;
                    y = this.rectangle.Bottom;
                    break;
                case 6:
                    x = xCenter;
                    y = this.rectangle.Bottom;
                    break;
                case 7:
                    x = this.rectangle.X;
                    y = this.rectangle.Bottom;
                    break;
                case 8:
                    x = this.rectangle.X;
                    y = yCenter;
                    break;
            }

            return new PointF(x, y);
        }

        public override Rectangle GetHandleRectangle(int handleNumber)
        {
            PointF point = GetHandle(handleNumber);

            return new Rectangle((int)(point.X - 100), (int)(point.Y - 100), 201, 201);
        }

        /// <summary>
        /// Hit test.
        /// Return value: -1 - no hit
        ///                0 - hit anywhere
        ///                > 1 - handle number
        /// </summary>
        /// <param name="pointscroll"></param>
        /// <returns></returns>
        public override int HitTest(Point point)
        {
            if (Selected)
            {
                for (int i = 1; i <= HandleCount; i++)
                {
                    if (GetHandleRectangle(i).Contains(point))
                        return i;
                }
            }

            if (PointInObject(point))
                return 0;

            return -1;
        }

        protected override bool PointInObject(Point point)
        {
            return rectangle.Contains(point);
        }

        /// <summary>
        /// Get cursor for the handle
        /// </summary>
        /// <param name="handleNumber"></param>
        /// <returns></returns>
        public override Cursor GetHandleCursor(int handleNumber)
        {
            return null;
        }

        /// <summary>
        /// Move handle to new pointscroll (resizing)
        /// </summary>
        /// <param name="pointscroll"></param>
        /// <param name="handleNumber"></param>
        public override void MoveHandleTo(Point point, int handleNumber)
        {
            return;
        }

        public override bool IntersectsWith(Rectangle rectangle)
        {
            return Rectangle.IntersectsWith(rectangle);
        }

        /// <summary>
        /// Move object
        /// </summary>
        /// <param name="deltaX"></param>
        /// <param name="deltaY"></param>
        public override void Move(int deltaX, int deltaY)
        {
            int x = ISurfaceBox.UnscaleScalar(deltaX);
            int y = ISurfaceBox.UnscaleScalar(deltaY);

            rectangle.X += x;
            rectangle.Y += y;

        }

        public override List<PointF> GetPoints()
        {
            List<PointF> points = new List<PointF>();
            points.Add(new PointF(rectangle.X, rectangle.Y));
            points.Add(new PointF(rectangle.Right, rectangle.Bottom));
            return points;
        }

        public List<PointF> GetRulerPoints()
        {
            List<PointF> points = new List<PointF>();
            points.Add(this.ISurfaceBox.ScalePointToRulerPoint(new PointF(rectangle.X, rectangle.Y)));
            points.Add(this.ISurfaceBox.ScalePointToRulerPoint(new PointF(rectangle.Right, rectangle.Bottom)));
            return points;
        }

        public Dictionary<int, object> GetViewPoints()
        {
            return this.points;
        }

        public void SetZPostion(Dictionary<int, object> point)
        {
            this.points = point;
        }
    }
}