using System;
using System.Drawing;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.ImageList;
using OpenCvSharp;
using PaintDotNet.Adjust;
using System.Threading;

namespace PaintDotNet.GeneralAnalysis.CustomInterface
{
    internal class PictureUserControl : UserControl
    {
        #region 控件
        private GroupBox groupBox1;
        private Panel panel1;
        public PanelEx pictureBox1;
        public PlayUserContrtol playUserContrtol;
        private ToolUserContrtol toolUserContrtol;
        #endregion

        /// <summary>
        /// 图像
        /// </summary>
        public Bitmap bitmap;
        /// <summary>
        /// 对照模式的图片
        /// </summary>
        private Bitmap comBitmap;
        /// <summary>
        /// 1对照图像 2图谱图片
        /// </summary>
        private int type = 1;
        /// <summary>
        /// 图像集合
        /// </summary>
        private ImageCollection imageCollection;
        /// <summary>
        /// 当前图片
        /// </summary>
        private int currentPosition;
        /// <summary>
        /// 已经按下
        /// </summary>
        private bool MoveFlag = false;
        /// <summary>
        /// 当前x坐标
        /// </summary>
        private int xPos;
        /// <summary>
        /// 当前y坐标
        /// </summary>
        private int yPos;
        /// <summary>
        /// 1选择 2平移
        /// </summary>
        private int pointerType = 1;
        /// <summary>
        /// 初始化按钮事件
        /// </summary>
        private bool initButtonEvent = false;
        /// <summary>
        /// 对照窗体
        /// </summary>
        private AtlasComparisonDialog atlasComparisonDialog;
        /// <summary>
        /// 画笔颜色，用来绘制边框
        /// </summary>
        private Pen pen = new Pen(Color.Red);
        /// <summary>
        /// panel的选中状态
        /// </summary>
        public bool selectFlag = false;
        /// <summary>
        /// sizemode 借用picturebox的枚举
        /// </summary>
        private PictureBoxSizeMode pictureBoxSizeMode = PictureBoxSizeMode.Zoom;
        /// <summary>
        /// 缩放比例
        /// </summary>
        private float scaleFactor = 1f;

        public Bitmap Bitmap
        {
            set
            {
                this.bitmap = value;
                if(this.bitmap!=null)
                {
                    CalcScaleFactor();
                }
                this.pictureBox1.Refresh();
            }
            get
            {
                return this.bitmap;
            }
        }

        public Bitmap ComBitmap
        {
            set
            {
                this.comBitmap = value;
                this.pictureBox1.Refresh();
            }
            get
            {
                return this.comBitmap;
            }
        }

        public ImageCollection ImageCollection
        {
            set
            {
                this.imageCollection = value;
            }
        }

        public int CurrentPosition
        {
            set
            {
                this.currentPosition = value;
                SetCurrentImageAndPositionAndText();
            }
            get
            {
                return this.currentPosition;
            }
        }

        private void SetCurrentImageAndPositionAndText()
        {
            if (this.imageCollection != null && this.imageCollection.Count > 0)
            {
                if (this.imageCollection.Count >= this.currentPosition)
                {
                    this.Bitmap = this.atlasComparisonDialog.atlasModels.Find(a => a.id.Equals(this.imageCollection.Keys[this.currentPosition - 1])).bitmap;
                    this.playUserContrtol.SetCollectionText(this.currentPosition, this.imageCollection.Count);
                }
                else
                {
                    this.Bitmap = null;
                    this.playUserContrtol.SetCollectionText(0, 0);
                }
                this.pictureBox1.Refresh();
            }
        }

        public PictureUserControl(int type, AtlasComparisonDialog atlasComparisonDialog)
        {
            this.type = type;
            this.atlasComparisonDialog = atlasComparisonDialog;
            InitializeComponent();
            InitializeLanguageText();
            InitializeTools();
            InitializePictureEvent();
        }

        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            if (!this.initButtonEvent && this.bitmap != null)
            {
                this.initButtonEvent = true;
                _ = Task.Run(() =>
                {
                    Thread.Sleep(200);
                    InitializeButtonEvent();
                });
            }

            if (this.bitmap != null)
            {
                if (this.pictureBoxSizeMode == PictureBoxSizeMode.Zoom)
                {
                    e.Graphics.DrawImage(this.bitmap, CalcRectangle(this.bitmap));
                }
                else
                {
                    e.Graphics.DrawImage(this.bitmap, CalcRectangle(this.bitmap));
                }
            }

            if (this.comBitmap != null)
            {
                e.Graphics.DrawImage(this.comBitmap, CalcRectangle(this.comBitmap));
            }

            if (this.selectFlag)
            {
                e.Graphics.DrawRectangle(pen, e.ClipRectangle.X, e.ClipRectangle.Y,
                e.ClipRectangle.X + e.ClipRectangle.Width - 1,
                e.ClipRectangle.Y + e.ClipRectangle.Height - 1);
            }
        }

        /// <summary>
        /// 计算缩放比例
        /// 需要区分是适合大小还是
        /// </summary>
        private void CalcScaleFactor()
        {
            if (this.pictureBox1.Width > this.pictureBox1.Height)
            {
                if (this.bitmap.Width > this.pictureBox1.Width || this.bitmap.Height > this.pictureBox1.Height)
                {
                    float a = this.bitmap.Height * 1.0f / this.pictureBox1.Height;
                    float b = this.bitmap.Width * 1.0f / this.pictureBox1.Width;
                    if (a < b)
                    {
                        this.scaleFactor = this.pictureBox1.Width * 1.0f / this.bitmap.Width;
                    }
                    else
                    {
                        this.scaleFactor = this.pictureBox1.Height * 1.0f / this.bitmap.Height;
                    }
                }
                else
                {
                    this.scaleFactor = 1.0f;
                }
            }
            else
            {
                if (this.bitmap.Width > this.pictureBox1.Width || this.bitmap.Height > this.pictureBox1.Height)
                {
                    float a = this.bitmap.Height * 1.0f / this.pictureBox1.Height;
                    float b = this.bitmap.Width * 1.0f / this.pictureBox1.Width;
                    if (a < b)
                    {
                        this.scaleFactor = this.pictureBox1.Width * 1.0f / this.bitmap.Width;
                    }
                    else
                    {
                        this.scaleFactor = this.pictureBox1.Height * 1.0f / this.bitmap.Height;
                    }
                }
                else
                {
                    this.scaleFactor = 1.0f;
                }
            }
        }

        /// <summary>
        /// 计算绘制的图像合适大小
        /// </summary>
        /// <returns></returns>
        private RectangleF CalcRectangle(Bitmap bmp)
        {
            RectangleF rect = new RectangleF();
            
            rect.X = (this.pictureBox1.Width - bmp.Width * this.scaleFactor) / 2;
            rect.Y = (this.pictureBox1.Height - bmp.Height * this.scaleFactor) / 2;
            rect.Width = bmp.Width * this.scaleFactor;
            rect.Height = bmp.Height * this.scaleFactor;
            return rect;
        }

        /// <summary>
        /// 初始化按钮事件
        /// </summary>
        private void InitializeButtonEvent()
        {
            if (this.type == 1)
            {
                this.toolUserContrtol.button1.Click += new EventHandler(this.ZoomInButton_click);
                this.toolUserContrtol.button2.Click += new EventHandler(this.ZoomOutButton_click);
                this.toolUserContrtol.button3.Click += new EventHandler(this.PointerButton_click);
                this.toolUserContrtol.button4.Click += new EventHandler(this.MoveButton_click);
                this.toolUserContrtol.button5.Click += new EventHandler(this.FitSizeButton_click);
                this.toolUserContrtol.button6.Click += new EventHandler(this.OriginSizeButton_click);
                this.toolUserContrtol.button7.Click += new EventHandler(this.Rotate90Button_click);
                this.toolUserContrtol.button8.Click += new EventHandler(this.Rotate_90Button_click);
            }
            else if(this.type == 2)
            {
                this.playUserContrtol.button1.Click += new EventHandler(this.FirstButton_click);
                this.playUserContrtol.button3.Click += new EventHandler(this.PrevButton_click);
                this.playUserContrtol.button7.Click += new EventHandler(this.NextButton_click);
                this.playUserContrtol.button8.Click += new EventHandler(this.FinalButton_click);
            }
        }

        /// <summary>
        /// 初始化图片事件
        /// </summary>
        private void InitializePictureEvent()
        {
            this.pictureBox1.MouseDown += new MouseEventHandler(this.PictureBox_MouseDown);
            this.pictureBox1.MouseMove += new MouseEventHandler(this.PictureBox_MouseMove);
            this.pictureBox1.MouseUp += new MouseEventHandler(this.PictureBox_MouseUp);
        }

        /// <summary>
        /// 按下事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            if (this.pointerType == 2)
            {
                MoveFlag = true;
                xPos = e.X;
                yPos = e.Y;
            }

            if(this.type == 2 && this.bitmap!=null)
            {
                this.atlasComparisonDialog.SetSelectFlag();
                this.selectFlag = true;
                this.pictureBox1.Refresh();
            }
        }

        /// <summary>
        /// 移动事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            if (MoveFlag)
            {
                this.pictureBox1.Left += e.X - xPos;
                this.pictureBox1.Top += e.Y - yPos;
            }
        }

        /// <summary>
        /// 抬起事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PictureBox_MouseUp(object sender, MouseEventArgs e)
        {
            MoveFlag = false;
        }

        /// <summary>
        /// 放大按钮,picture最大宽高65535
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ZoomInButton_click(object sender, EventArgs e)
        {
            if (!this.atlasComparisonDialog.RelatedPic)
            {
                ZoomIn();
            }
            else
            {
                this.atlasComparisonDialog.ZoomInButton_click();
            }
        }

        /// <summary>
        /// 放大
        /// </summary>
        public void ZoomIn()
        {
            this.scaleFactor = this.scaleFactor * 1.1f;
            this.pictureBox1.Refresh();
        }


        /// <summary>
        /// 缩小按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ZoomOutButton_click(object sender, EventArgs e)
        {
            if (!this.atlasComparisonDialog.RelatedPic)
            {
                ZoomOut();
            }
            else
            {
                this.atlasComparisonDialog.ZoomOutButton_click();
            }
        }

        /// <summary>
        /// 缩小
        /// </summary>
        public void ZoomOut()
        {
            this.scaleFactor = this.scaleFactor * 0.9f;
            this.pictureBox1.Refresh();
        }

        /// <summary>
        /// 选择
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PointerButton_click(object sender, EventArgs e)
        {
            this.pointerType = 1;
            this.pictureBox1.Cursor = Cursors.Default;
        }

        /// <summary>
        /// 平移
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void MoveButton_click(object sender, EventArgs e)
        {
            this.pictureBox1.Cursor = Cursors.Hand;
            this.pointerType = 2;
        }

        /// <summary>
        /// 适合大小
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FitSizeButton_click(object sender, EventArgs e)
        {
            this.PointerButton_click(null, null);
            this.pictureBoxSizeMode = PictureBoxSizeMode.Zoom;
            this.pictureBox1.Width = this.groupBox1.Width - 6;
            this.pictureBox1.Height = this.groupBox1.Height - 41 - 9;
            this.pictureBox1.Left = 6;
            this.pictureBox1.Top = 21;
            if (this.bitmap != null)
            {
                CalcScaleFactor();
            }
            this.pictureBox1.Refresh();
            
        }

        /// <summary>
        /// 原始大小
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OriginSizeButton_click(object sender, EventArgs e)
        {
            this.pictureBoxSizeMode = PictureBoxSizeMode.Normal;
            /*if (this.bitmap != null)
            {
                CalcScaleFactor();
            }*/
            this.scaleFactor = 1.0f;
            this.Refresh();
        }

        /// <summary>
        /// 顺时针旋转90度
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Rotate90Button_click(object sender, EventArgs e)
        {
            if (!this.atlasComparisonDialog.RelatedPic)
            {
                Rotate90();
            }
            else
            {
                this.atlasComparisonDialog.Rotate90Button_click();
            }
        }

        /// <summary>
        /// 顺时针90度
        /// </summary>
        public void Rotate90()
        {
            if (this.bitmap != null)
            {
                Mat src = PaintDotNet.Camera.Tools.ToMat(this.bitmap);
                Mat dst = new Mat();
                GeometryIntent.ImageRotate(src, dst, FlipMode.Y);
                this.Bitmap = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(dst);
                this.pictureBox1.Refresh();
            }
        }

        /// <summary>
        /// 逆时针旋转90度
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Rotate_90Button_click(object sender, EventArgs e)
        {
            if (!this.atlasComparisonDialog.RelatedPic)
            {
                Rotate_90();
            }
            else
            {
                this.atlasComparisonDialog.Rotate_90Button_click();
            }
        }

        /// <summary>
        /// 逆时针旋转90度
        /// </summary>
        public void Rotate_90()
        {
            if (this.bitmap != null)
            {
                Mat src = PaintDotNet.Camera.Tools.ToMat(this.bitmap);
                Mat dst = new Mat();
                GeometryIntent.ImageRotate(src, dst, FlipMode.X);
                this.Bitmap = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(dst);
                this.pictureBox1.Refresh();
            }
        }

        /// <summary>
        /// 第一个
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FirstButton_click(object sender, EventArgs e)
        {
            if (imageCollection!=null && imageCollection.Count>0)
            {
                this.currentPosition = 1;
                this.Bitmap = this.atlasComparisonDialog.atlasModels.Find(a => a.id.Equals(this.imageCollection.Keys[0])).bitmap;
                this.pictureBox1.Refresh();
                this.playUserContrtol.SetCollectionText(1, this.imageCollection.Count);
            }
        }

        /// <summary>
        /// 上一个
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PrevButton_click(object sender, EventArgs e)
        {
            if (imageCollection != null && imageCollection.Count > 0)
            {
                if(this.currentPosition>1)
                {
                    this.currentPosition -= 1;
                    this.Bitmap = this.atlasComparisonDialog.atlasModels.Find(a => a.id.Equals(this.imageCollection.Keys[this.currentPosition - 1])).bitmap;
                    this.pictureBox1.Refresh();
                    this.playUserContrtol.SetCollectionText(this.currentPosition, this.imageCollection.Count);
                }
            }
        }

        /// <summary>
        /// 下一个
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void NextButton_click(object sender, EventArgs e)
        {
            if (imageCollection != null && imageCollection.Count > 0)
            {
                if (this.currentPosition < imageCollection.Count)
                {
                    this.currentPosition += 1;
                    this.Bitmap = this.atlasComparisonDialog.atlasModels.Find(a => a.id.Equals(this.imageCollection.Keys[this.currentPosition - 1])).bitmap;
                    this.pictureBox1.Refresh();
                    this.playUserContrtol.SetCollectionText(this.currentPosition, this.imageCollection.Count);
                }
            }
        }

        /// <summary>
        /// 最后一个
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FinalButton_click(object sender, EventArgs e)
        {
            if (imageCollection != null && imageCollection.Count > 0)
            {
                this.currentPosition = imageCollection.Count;
                this.Bitmap = this.atlasComparisonDialog.atlasModels.Find(a => a.id.Equals(this.imageCollection.Keys[this.currentPosition - 1])).bitmap;
                this.pictureBox1.Refresh();
                this.playUserContrtol.SetCollectionText(this.currentPosition, this.imageCollection.Count);
            }
        }

        /// <summary>
        /// 初始化工具栏
        /// </summary>
        private void InitializeTools()
        {
            if (this.type==1)
            {
                this.groupBox1.Text = PdnResources.GetString("Menu.Generalanalysis.Atlascomparison.Controlimage.text");
                this.toolUserContrtol = new ToolUserContrtol();
                this.panel1.Controls.Add(this.toolUserContrtol);
            }
            else
            {
                this.groupBox1.Text = PdnResources.GetString("Menu.Generalanalysis.Atlascomparison.Atlasimage.text");
                this.playUserContrtol = new PlayUserContrtol();
                this.panel1.Controls.Add(this.playUserContrtol);
            }
        }

        private void InitializeLanguageText() 
        {
            this.groupBox1.Text = PdnResources.GetString("Menu.Mapimage.Text");
        }
        private void InitializeComponent()
        {
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.panel1 = new System.Windows.Forms.Panel();
            this.pictureBox1 = new PanelEx();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // groupBox1
            // 
            this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
            this.groupBox1.Controls.Add(this.panel1);
            this.groupBox1.Controls.Add(this.pictureBox1);
            this.groupBox1.Location = new System.Drawing.Point(4, 4);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(300, 319);
            this.groupBox1.TabIndex = 0;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "图谱图片";

            // 
            // panel1
            // 
            this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
            this.panel1.Location = new System.Drawing.Point(7, 272);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(287, 41);
            this.panel1.TabIndex = 1;
            // 
            // pictureBox1
            // 
            this.pictureBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
            | System.Windows.Forms.AnchorStyles.Left) 
            | System.Windows.Forms.AnchorStyles.Right)));
            this.pictureBox1.Location = new System.Drawing.Point(6, 21);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(288, 245);
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
            // 
            // PictureUserControl
            // 
            this.Controls.Add(this.groupBox1);
            this.Name = "PictureUserControl";
            this.Size = new System.Drawing.Size(307, 326);
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);
        }
    }
}