using OpenCvSharp;
using PaintDotNet.Adjust.BaseImage;
using PaintDotNet.ImageCollect;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace PaintDotNet.Instrument
{
    /// <summary>
    /// 像素跟踪
    /// </summary>
    internal class PixelTrackingDialog : FloatingToolForm
    {
        #region 控件
        private Label label6;
        private Label label5;
        private Label label4;
        private Label label3;
        private Label label2;
        private Label label1;
        private CustomControl.LinearColorPickerControl panel1;
        private PictureBox pictureBox1;
        private Label label7;
        private Label label8;
        private NumericUpDown numericUpDown1;
        private TrackBar trackBar1;
        private Label label9;
        #endregion

        private AppWorkspace appWorkspace;
        /// <summary>
        /// 原图、hls(可优化)、鹰眼图(从经过缩放的图片获取)、经过缩放的图片
        /// </summary>
        private Mat ImageROI, bmat = new Mat();
        /// <summary>
        /// rgb像素点
        /// </summary>
        private Vec3b bgr;
        /// <summary>
        /// hls像素点
        /// </summary>
        private double h, s, v;
        /// <summary>
        /// 缩放倍数
        /// </summary>
        private int scale;
        /// <summary>
        /// 中间十字和圆的颜色
        /// 根据左侧的panel的被选中的背景色变化
        /// </summary>
        private Color color = Color.Red;
        private Mat mat;
        public Mat Mat
        {
            set
            {
                this.mat = value;
            }
        }

        private void trackBar1_ValueChanged(object sender, EventArgs e)
        {
            if (mat != null)
            {
                scale = this.trackBar1.Value;
                this.numericUpDown1.Value = this.trackBar1.Value;
                //Cv2.Resize(mat, bmat, new OpenCvSharp.Size(mat.Width * scale, mat.Height * scale));
                //Mat temp = new Mat(new OpenCvSharp.Size(bmat.Width + 100, bmat.Height + 100), bmat.Type());
                //Cv2.CopyMakeBorder(bmat, temp, 50, 50, 50, 50, BorderTypes.Constant, Scalar.All(255));
                //bmat = temp;
            }
        }

        private void numericUpDown1_ValueChanged(object sender, EventArgs e)
        {
            if (mat != null)
            {
                scale = (int)this.numericUpDown1.Value;
                this.trackBar1.Value = scale;
                //Cv2.Resize(mat, bmat, new OpenCvSharp.Size(mat.Width * scale, mat.Height * scale));
                //Mat temp = new Mat(new OpenCvSharp.Size(bmat.Width + 100, bmat.Height + 100), bmat.Type());
                //Cv2.CopyMakeBorder(bmat, temp, 50, 50, 50, 50, BorderTypes.Constant, Scalar.All(255));
                //bmat = temp;
            }
        }

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="appWorkspace"></param>
        public PixelTrackingDialog(AppWorkspace appWorkspace)
        {
            this.appWorkspace = appWorkspace;

            InitializeComponent();

            this.label9.Text = PdnResources.GetString("Menu.Times.text");
            this.Text = PdnResources.GetString("Menu.Tools.PixelTracking.Text");
            this.label7.Parent = this.pictureBox1;
            this.label8.Parent = this.pictureBox1;
            this.label7.Location = new System.Drawing.Point(0, 0);
            this.label8.Location = new System.Drawing.Point(0, 17);

            this.pictureBox1.Paint += new PaintEventHandler(PictureBox1_Paint);
        }

        private void PixelTrackingDialog_FormClosing(object sender, FormClosingEventArgs e)
        {
            this.appWorkspace.toolBar.RefreshBtnSelect(false, "PixelTracking");
            this.appWorkspace.toolsPanel.RefreshBtnSelect(false, "PixelTracking");
        }

        /// <summary>
        /// PictureBox的绘制事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PictureBox1_Paint(object sender, PaintEventArgs e)
        {
            e.Graphics.DrawLine(new Pen(color), 0, 50, 100, 50);
            e.Graphics.DrawLine(new Pen(color), 50, 0, 50, 100);
            e.Graphics.DrawEllipse(new Pen(color), new Rectangle(25, 25, 50, 50));
        }

        ///// <summary>
        ///// 左侧panel，渐变背景色
        ///// </summary>
        ///// <param name="sender"></param>
        ///// <param name="e"></param>
        //private void Panel1_Paint(object sender, PaintEventArgs e)
        //{
        //    LinearGradientBrush brush = new LinearGradientBrush(e.ClipRectangle, Color.Yellow, Color.Blue, LinearGradientMode.Vertical);
        //    ColorBlend colorBlend = new ColorBlend();
        //    colorBlend.Colors = new Color[]{ Color.Yellow, Color.Red, Color.Green, Color.Blue };
        //    colorBlend.Positions = new float[] { 0 / 3f, 1 / 3f, 2 / 3f, 3 / 3f };
        //    brush.InterpolationColors = colorBlend;
        //    e.Graphics.FillRectangle(brush, e.ClipRectangle);
        //}

        private void Panel1_ValueChanged(object sender, IndexEventArgs ce)
        {
            color = panel1.ValueToColor(panel1.Value);
            pictureBox1.Refresh();
        }

        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.label6 = new System.Windows.Forms.Label();
            this.label5 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label1 = new System.Windows.Forms.Label();
            this.panel1 = new PaintDotNet.CustomControl.LinearColorPickerControl();
            this.label7 = new System.Windows.Forms.Label();
            this.label8 = new System.Windows.Forms.Label();
            this.numericUpDown1 = new System.Windows.Forms.NumericUpDown();
            this.trackBar1 = new System.Windows.Forms.TrackBar();
            this.label9 = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.Location = new System.Drawing.Point(21, 8);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(100, 100);
            this.pictureBox1.TabIndex = 1;
            this.pictureBox1.TabStop = false;
            // 
            // label6
            // 
            this.label6.AutoSize = true;
            this.label6.Location = new System.Drawing.Point(124, 95);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(11, 12);
            this.label6.TabIndex = 14;
            this.label6.Text = "V";
            // 
            // label5
            // 
            this.label5.AutoSize = true;
            this.label5.Location = new System.Drawing.Point(124, 79);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(11, 12);
            this.label5.TabIndex = 13;
            this.label5.Text = "S";
            // 
            // label4
            // 
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(124, 63);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(11, 12);
            this.label4.TabIndex = 12;
            this.label4.Text = "H";
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(124, 41);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(11, 12);
            this.label3.TabIndex = 11;
            this.label3.Text = "B";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(124, 25);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(11, 12);
            this.label2.TabIndex = 10;
            this.label2.Text = "G";
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(124, 9);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(35, 12);
            this.label1.TabIndex = 9;
            this.label1.Text = "R=255";
            // 
            // panel1
            // 
            this.panel1.Count = 1;
            this.panel1.CustomGradient = new System.Drawing.Color[] {
        System.Drawing.Color.White,
        System.Drawing.Color.Yellow,
        System.Drawing.Color.Red,
        System.Drawing.Color.Green,
        System.Drawing.Color.Blue,
        System.Drawing.Color.Black};
            this.panel1.DrawFarNub = true;
            this.panel1.DrawNearNub = true;
            this.panel1.Location = new System.Drawing.Point(3, 8);
            this.panel1.MaxColor = System.Drawing.Color.White;
            this.panel1.MinColor = System.Drawing.Color.Black;
            this.panel1.Name = "panel1";
            this.panel1.Orientation = System.Windows.Forms.Orientation.Vertical;
            this.panel1.Size = new System.Drawing.Size(14, 100);
            this.panel1.TabIndex = 17;
            this.panel1.TabStop = false;
            this.panel1.Value = 153;
            this.panel1.ValueChanged += new PaintDotNet.IndexEventHandler(this.Panel1_ValueChanged);
            // 
            // label7
            // 
            this.label7.AutoSize = true;
            this.label7.BackColor = System.Drawing.Color.Transparent;
            this.label7.Location = new System.Drawing.Point(24, 11);
            this.label7.Name = "label7";
            this.label7.Size = new System.Drawing.Size(17, 12);
            this.label7.TabIndex = 18;
            this.label7.Text = "X=";
            // 
            // label8
            // 
            this.label8.AutoSize = true;
            this.label8.BackColor = System.Drawing.Color.Transparent;
            this.label8.Location = new System.Drawing.Point(24, 27);
            this.label8.Name = "label8";
            this.label8.Size = new System.Drawing.Size(17, 12);
            this.label8.TabIndex = 19;
            this.label8.Text = "Y=";
            // 
            // numericUpDown1
            // 
            this.numericUpDown1.Location = new System.Drawing.Point(4, 114);
            this.numericUpDown1.Maximum = new decimal(new int[] {
            10,
            0,
            0,
            0});
            this.numericUpDown1.Minimum = new decimal(new int[] {
            1,
            0,
            0,
            0});
            this.numericUpDown1.Name = "numericUpDown1";
            this.numericUpDown1.Size = new System.Drawing.Size(37, 21);
            this.numericUpDown1.TabIndex = 20;
            this.numericUpDown1.Value = new decimal(new int[] {
            1,
            0,
            0,
            0});
            this.numericUpDown1.ValueChanged += new System.EventHandler(this.numericUpDown1_ValueChanged);
            // 
            // trackBar1
            // 
            this.trackBar1.Location = new System.Drawing.Point(68, 114);
            this.trackBar1.Minimum = 1;
            this.trackBar1.Name = "trackBar1";
            this.trackBar1.Size = new System.Drawing.Size(91, 45);
            this.trackBar1.TabIndex = 21;
            this.trackBar1.TickStyle = System.Windows.Forms.TickStyle.None;
            this.trackBar1.Value = 1;
            this.trackBar1.ValueChanged += new System.EventHandler(this.trackBar1_ValueChanged);
            // 
            // label9
            // 
            this.label9.AutoSize = true;
            this.label9.Location = new System.Drawing.Point(45, 118);
            this.label9.Name = "label9";
            this.label9.Size = new System.Drawing.Size(0, 12);
            this.label9.TabIndex = 22;
            // 
            // PixelTrackingDialog
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
            this.ClientSize = new System.Drawing.Size(164, 141);
            this.Controls.Add(this.label9);
            this.Controls.Add(this.trackBar1);
            this.Controls.Add(this.numericUpDown1);
            this.Controls.Add(this.label8);
            this.Controls.Add(this.label7);
            this.Controls.Add(this.panel1);
            this.Controls.Add(this.label6);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.pictureBox1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
            this.Name = "PixelTrackingDialog";
            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.PixelTrackingDialog_FormClosing);
            this.Controls.SetChildIndex(this.pictureBox1, 0);
            this.Controls.SetChildIndex(this.label1, 0);
            this.Controls.SetChildIndex(this.label2, 0);
            this.Controls.SetChildIndex(this.label3, 0);
            this.Controls.SetChildIndex(this.label4, 0);
            this.Controls.SetChildIndex(this.label5, 0);
            this.Controls.SetChildIndex(this.label6, 0);
            this.Controls.SetChildIndex(this.panel1, 0);
            this.Controls.SetChildIndex(this.label7, 0);
            this.Controls.SetChildIndex(this.label8, 0);
            this.Controls.SetChildIndex(this.numericUpDown1, 0);
            this.Controls.SetChildIndex(this.trackBar1, 0);
            this.Controls.SetChildIndex(this.label9, 0);
            ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }
        public bool IsPreview()
        {
            bool iss = CameraPreviewDialog.cameraPreviewDialog != null && CameraPreviewDialog.cameraPreviewDialog.IsLeave() && CameraPreviewDialog.cameraPreviewDialog.documentWorkspace.CompositionSurface != null;
            return iss;
        }
        /// <summary>
        /// 设置像素跟踪的数据
        /// </summary>
        public unsafe void SetImageAndData(System.Drawing.Point point, DocumentView doc)
        {
            mat = doc.CompositionSurface.CreatedAliasedMat();
            scale = int.Parse(this.numericUpDown1.Value.ToString());

            if (point.X >= 0 && point.Y >= 0 && point.X <= mat.Width && point.Y <= mat.Height)
            {
                /*if (point.X < 50 || point.X > mat.Width - 50 || point.Y < 50 || point.Y > mat.Height - 50)
                {
                    int direction = CalcDirection(point, mat);
                    Mat temp_1 = CalcCropMat(direction, point, mat);
                    bmat = CalcCopyMakeBorder(direction, temp_1);
                }
                else*/
                {
                    int x = point.X - 50;
                    int y = point.Y - 50;
                    if (x < 0) x = 0;
                    if (y < 0) y = 0;
                    int offsetX = (mat.Width - x) > 100 ? 100 : (mat.Width - x);
                    int offsetY = (mat.Height - y) > 100 ? 100 : (mat.Height - y);
                    if (x == 0) offsetX = 100 - 50 + point.X;
                    if (y == 0) offsetY = 100 - 50 + point.Y;
                    //if (x + offsetX > mat.Width) offsetX = x + offsetX - mat.Width;
                    //if (y + offsetY > mat.Height) offsetY = y + offsetY - mat.Height;
                    if (x + offsetX > mat.Width) offsetX = mat.Width - x;
                    if (y + offsetY > mat.Height) offsetY = mat.Height - y;
                    bmat = new Mat(mat, new Rect(x, y, offsetX, offsetY));
                    //bmat = new Mat(mat, new Rect(point.X - 50, point.Y - 50, 100, 100));
                }

                //如果不足100*100，补足100*100
                if(bmat.Width<100 || bmat.Height<100)
                {
                    bmat = CalcCopyMakeBorder(CalcDirection1(point, mat), bmat);
                    //Cv2.CopyMakeBorder(bmat, bmat, 100 - bmat.Height, 0, 100 - bmat.Width, 0, BorderTypes.Constant, Scalar.All(255));
                }
            }

            this.label7.Text = "X=" + point.X.ToString();
            this.label8.Text = "Y=" + point.Y.ToString();

            if (point.X > 0 && point.Y > 0 && point.X < mat.Width && point.Y < mat.Height)
            {
                bgr = mat.At<Vec3b>(point.Y, point.X);
                this.label1.Text = "R=" + bgr[2];
                this.label2.Text = "G=" + bgr[1];
                this.label3.Text = "B=" + bgr[0];

                BaseTools.RgbToHsv(bgr, out h, out s, out v);
                this.label4.Text = "H=" + (int)(h / 2);
                this.label5.Text = "S=" + (int)(s * 255);
                this.label6.Text = "V=" + (int)(v * 255);

                //设置源图像ROI
                ImageROI = bmat;
                //按缩放比例截取小图像
                Rect roi1 = new Rect((100 - 100 / scale) / 2, (100 - 100 / scale) / 2, 100 / scale, 100 / scale);
                ImageROI = new Mat(ImageROI, roi1);
                //按固定宽高放大图像
                Cv2.Resize(ImageROI, ImageROI, new OpenCvSharp.Size(100, 100));
                this.pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(ImageROI);
            }
            GC.Collect();
            this.Refresh();
        }

        /// <summary>
        /// 计算方向 1上 2右上 3右 4右下 5下 6左下 7左 8左上
        /// </summary>
        /// <returns></returns>
        private int CalcDirection(System.Drawing.Point point, Mat mat)
        {
            int direction = 1;

            if (point.Y < 100) direction = 1;
            if (point.X > mat.Width - 100) direction = 3;
            if (point.Y > mat.Height - 100) direction = 5;
            if (point.X < 100) direction = 7;

            if (point.Y < 100 && point.X > mat.Width - 100) direction = 2;
            if (point.X > mat.Width - 100 && point.Y > mat.Height - 100) direction = 4;
            if (point.X < 100 && point.Y > mat.Height - 100) direction = 6;
            if (point.Y < 100 && point.X < 100) direction = 8;

            return direction;
        }

        private int CalcDirection1(System.Drawing.Point point, Mat mat)
        {
            int direction = 1;

            if (point.Y < 50) direction = 1;
            if (point.X > mat.Width - 50) direction = 3;
            if (point.Y > mat.Height - 50) direction = 5;
            if (point.X < 50) direction = 7;

            if (point.Y < 50 && point.X > mat.Width - 50) direction = 2;
            if (point.X > mat.Width - 50 && point.Y > mat.Height - 50) direction = 4;
            if (point.X < 50 && point.Y > mat.Height - 50) direction = 6;
            if (point.Y < 50 && point.X < 50) direction = 8;

            return direction;
        }

        /// <summary>
        /// 截取部分mat
        /// 1上 2右上 3右 4右下 5下 6左下 7左 8左上
        /// </summary>
        /// <param name="direction"></param>
        /// <param name="point"></param>
        /// <param name="mat"></param>
        private Mat CalcCropMat(int direction, System.Drawing.Point point, Mat mat)
        {
            Mat temp = new Mat(mat, new Rect(point.X - 50, point.Y, 100, point.Y < 50 ? 50 : point.Y));
            /*Mat temp = null;
            int x, y, x_off, y_off;
            switch (direction)
            {
                case 1: //上
                    temp = new Mat(mat, new Rect(point.X - 50, point.Y, 100, point.Y < 50 ? 50 : point.Y));
                    break;
                case 2: //右上
                    x = point.X - 50;
                    y = point.Y;
                    x_off = (mat.Width - x) > 100 ? 100 : (mat.Width - x);
                    y_off = 50;
                    temp = new Mat(mat, new Rect(x, y, x_off, y_off));
                    break;
                case 3: //右
                    temp = new Mat(mat, new Rect(point.X - 50,
                                                point.Y - 50,
                                                point.X > mat.Width - 50 ? 50 : mat.Width - point.X,
                                                100));
                    break;
                case 4: //右下
                    x = point.X - 50;
                    y = point.Y - 50;
                    if (y < 0) y = point.Y;
                    x_off = (mat.Width - x) > 100 ? 100 : (mat.Width - x);
                    y_off = (mat.Height - y) > 100 ? 100 : (mat.Height - y);
                    temp = new Mat(mat, new Rect(x, y, x_off, y_off));
                    break;
                case 5: //下
                    y = point.Y - 50;
                    if (y < 0) y = point.Y;
                    temp = new Mat(mat, new Rect(point.X - 50, y, 100, (mat.Height - y) > 100 ? 100 : (mat.Height - y)));
                    break;
                case 6: //左下
                    x = point.X;
                    y = (point.Y - 50) < 0 ? point.Y : (point.Y - 50);
                    x_off = (mat.Width - x) > 50 ? 50 : (mat.Width - x);
                    y_off = (mat.Height - y) > 100 ? 100 : (mat.Height - y);
                    temp = new Mat(mat, new Rect(x, y, x_off, y_off));
                    break;
                case 7: //左
                    x = point.X; 
                    y = (point.Y - 50) < 0 ? point.Y : (point.Y - 50);
                    temp = new Mat(mat, new Rect(x, y,
                        (mat.Width - x) > 50 ? 50 : (mat.Width - x),
                        (mat.Height - y) > 100 ? 100 : (mat.Height - y)));
                    break;
                case 8: //左上
                    temp = new Mat(mat, new Rect(point.X, point.Y, (mat.Width - point.X) > 50 ? 50 : (mat.Width - point.X), (mat.Height - point.Y) > 50 ? 50 : (mat.Height - point.Y)));
                    break;
            }*/

            return temp;
        }

        /// <summary>
        /// 扩展边界
        /// 1上 2右上 3右 4右下 5下 6左下 7左 8左上
        /// </summary>
        /// <param name="direction"></param>
        /// <param name="temp_1"></param>
        /// <returns></returns>
        private Mat CalcCopyMakeBorder(int direction, Mat temp_1)
        {
            switch (direction)
            {
                case 1:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 100 - temp_1.Height, 0, 0, 0, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 2:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 100 - temp_1.Height, 0, 0, 100 - temp_1.Width, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 3:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 0, 0, 0, 100 - temp_1.Width, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 4:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 0, 100 - temp_1.Height, 0, 100 - temp_1.Width, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 5:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 0, 100 - temp_1.Height, 0, 0, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 6:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 0, 100 - temp_1.Height, 100 - temp_1.Width, 0, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 7:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 0, 0, 100 - temp_1.Width, 0, BorderTypes.Constant, Scalar.All(255));
                    break;
                case 8:
                    Cv2.CopyMakeBorder(temp_1, temp_1, 100 - temp_1.Height, 0, 100 - temp_1.Width, 0, BorderTypes.Constant, Scalar.All(255));
                    break;
            }

            return temp_1;
        }
    }
}