using PaintDotNet.Base.SettingModel;
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.IO;
using static PaintDotNet.Base.SettingModel.LabelStyleModel;
using PaintDotNet.Annotation.Enum;
using System.Collections.Generic;
using PaintDotNet.Base.Enum;

namespace PaintDotNet.Annotation.Label
{
    /// <summary>
    /// 标注->标记->放大倍数
    /// </summary>
    public class DrawGainNumber : DrawObject
    {
        private static Cursor handleCursor = new Cursor(PdnResources.GetResourceStream("Cursors.AnnotationPolyHandle.cur"));

        /// <summary>
        /// 标注样式信息model
        /// </summary>
        public GainNumber labelGainNumberStyleModel;
        /// <summary>
        /// 放大倍数输出信息
        /// </summary>
        private string stringMsg = "";
        /// <summary>
        /// 辅助为第一次创建放大倍数对象赋值
        /// </summary>
        public bool isFirstClick = true;

        public DrawGainNumber(ISurfaceBox surfaceBox) : base()
        {
            this.objectType = DrawClass.Label;
            this.drawToolType = DrawToolType.DrawGainNumber;

            labelGainNumberStyleModel = surfaceBox.GetLabelStyleModel().gainNumber;

            startPoint = new PointF(0, 0);

            Initialize();
        }


        public DrawGainNumber(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Label;
            this.drawToolType = DrawToolType.DrawGainNumber;
            this.ISurfaceBox = surfaceBox;

            labelGainNumberStyleModel = (GainNumber)parentStyleModel;
            startPoint = points[0];
            stringMsg = content.ToString();
            isFirstClick = false;
        }

        /// <summary>
        /// Clone this instance
        /// </summary>
        public override DrawObject Clone()
        {
            DrawGainNumber gainNumber = new DrawGainNumber(ISurfaceBox);
            gainNumber.objectType = DrawClass.Label;
            gainNumber.drawToolType = DrawToolType.DrawGainNumber;
            gainNumber.ISurfaceBox = ISurfaceBox;
            gainNumber.startPoint = this.startPoint;
            gainNumber.stringMsg = this.stringMsg;
            gainNumber.isFirstClick = false;
            FillDrawObjectFields(gainNumber);
            return gainNumber;
        }

        public override DrawObject Clone(ISurfaceBox surfaceBox)
        {
            DrawGainNumber gainNumber = new DrawGainNumber(surfaceBox);
            gainNumber.objectType = DrawClass.Label;
            gainNumber.drawToolType = DrawToolType.DrawGainNumber;
            gainNumber.ISurfaceBox = surfaceBox;
            gainNumber.startPoint = this.startPoint;
            gainNumber.stringMsg = this.stringMsg;
            gainNumber.isFirstClick = false;
            gainNumber.labelGainNumberStyleModel = this.labelGainNumberStyleModel;
            FillDrawObjectFields(gainNumber);
            return gainNumber;
        }

        public override void Draw(Graphics g)
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            stringMsg = PdnResources.GetString("Menu.ImageOverlays.line.Takepictures.text") + ":" + ISurfaceBox.GetMic_Rulers().ToString("f2") + "X";
            Font textfont = new Font(this.labelGainNumberStyleModel.font, this.labelGainNumberStyleModel.fontSize);
            Brush textbrush = new SolidBrush(Color.FromArgb(this.labelGainNumberStyleModel.textColor));

            Color color = Color.FromArgb(this.labelGainNumberStyleModel.backgroundBoxColor);
            Pen pen = new Pen(color, this.labelGainNumberStyleModel.lineWidth);

            Color fillColor = Color.FromArgb(this.labelGainNumberStyleModel.backgroundColor);
            SolidBrush fillBrush = new SolidBrush(fillColor);
      
            Size fontSize = g.MeasureString(stringMsg, textfont).ToSize();

            float positionSize = 0;//位置大小
            float backgroundSize = 0;//背景大小
            if (fontSize.Width > fontSize.Height)
            {
                positionSize = fontSize.Width * (this.labelGainNumberStyleModel.positionSize / 100f);
                backgroundSize = fontSize.Width * (this.labelGainNumberStyleModel.backgroundSize / 100f);
            }
            else
            {
                positionSize = fontSize.Height * (this.labelGainNumberStyleModel.positionSize / 100f);
                backgroundSize = fontSize.Height * (this.labelGainNumberStyleModel.backgroundSize / 100f);
            }

            if (isFirstClick)
            {
                string gainPosition = this.labelGainNumberStyleModel.position;
                SizeF windowSize = this.ISurfaceBox.GetDocumentSize();
                switch ((TagLocation)System.Enum.ToObject(typeof(TagLocation), int.Parse(gainPosition)))
                {
                    case TagLocation.UpLeft:
                        startPoint.X = 0 + positionSize;
                        startPoint.Y = 0 + positionSize;
                        break;
                    case TagLocation.UpRight:
                        startPoint.X = Convert.ToInt32(windowSize.Width) - fontSize.Width - 2 * backgroundSize - positionSize;
                        startPoint.Y = 0 + positionSize;
                        break;
                    case TagLocation.DownLeft:
                        startPoint.X = 0 + positionSize;
                        startPoint.Y = Convert.ToInt32(windowSize.Height) - fontSize.Height - 2 * backgroundSize - positionSize;
                        break;
                    case TagLocation.DownRight:
                        startPoint.X = Convert.ToInt32(windowSize.Width) - fontSize.Width - 2 * backgroundSize - positionSize;
                        startPoint.Y = Convert.ToInt32(windowSize.Height) - fontSize.Height - 2 * backgroundSize - positionSize;
                        break;
                }
                isFirstClick = false;
            }
           
            g.FillRectangle(fillBrush, startPoint.X, startPoint.Y, fontSize.Width + 2 * backgroundSize, fontSize.Height + 2 * backgroundSize);
            g.DrawRectangle(pen, startPoint.X, startPoint.Y, fontSize.Width + 2 * backgroundSize, fontSize.Height + 2 * backgroundSize);
            g.DrawString(stringMsg, textfont, textbrush, startPoint.X + backgroundSize, startPoint.Y + backgroundSize);

            rectangle.X = startPoint.X;
            rectangle.Y = startPoint.Y;
            rectangle.Width = fontSize.Width + 2 * backgroundSize;
            rectangle.Height = fontSize.Height + 2 * backgroundSize;

            fillBrush.Dispose();
            pen.Dispose();

        }

        public override int HandleCount
        {
            get
            {
                return 1;
            }
        }

        /// <summary>
        /// Get handle pointscroll by 1-based number
        /// </summary>
        /// <param name="handleNumber"></param>
        /// <returns></returns>
        public override PointF GetHandle(int handleNumber)
        {
            return startPoint;
        }

        /// <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);
        }

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

        public override Cursor GetHandleCursor(int handleNumber)
        {
            return Cursors.Default;
        }

        public override void MoveHandleTo(Point point, int handleNumber)
        {
             startPoint = point;
        }

        public override void Move(int deltaX, int deltaY)
        {
            int x = ISurfaceBox.UnscaleScalar(deltaX);
            int y = ISurfaceBox.UnscaleScalar(deltaY);

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

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

        public override RectangleF GetBoundingBox()
        {
            return rectangle;
        }

        public override List<PointF> GetPoints()
        {
            List<PointF> points = new List<PointF>();
            points.Add(startPoint);
            return points;
        }

        public override ParentStyleModel GetStyle()
        {
            return labelGainNumberStyleModel;
        }

        public override string GetContent()
        {
            return stringMsg;
        }
    }
}