using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
using Uni_Trend.MSO7000X.Touch;

#pragma warning disable IDE1006 // lowercase public properties
#pragma warning disable CS0067 // unused events

namespace ScottPlot
{
    public partial class FormsPlot : UserControl,ITouchAble
    {
        /// <summary>
        /// This is the plot displayed by the user control.
        /// After modifying it you may need to call Render() to request the plot be redrawn on the screen.
        /// </summary>
        public Plot Plot => Backend.Plot;

        /// <summary>
        /// This object can be used to modify advanced behaior and customization of this user control.
        /// </summary>
        public Control.Configuration Configuration => Backend.Configuration;

        /// <summary>
        /// This event is invoked any time the axis limits are modified.
        /// </summary>
        public event EventHandler AxesChanged;

        /// <summary>
        /// 创建扩展通道事件
        /// </summary>
        public event EventHandler ZoomCreated;

        /// <summary>
        /// This event is invoked any time the plot is right-clicked.
        /// By default it contains DefaultRightClickEvent(), but you can remove this and add your own method.
        /// </summary>
        public event EventHandler RightClicked;

        /// <summary>
        /// This event is invoked after the mouse moves while dragging a draggable plottable.
        /// The object passed is the plottable being dragged.
        /// </summary>
        public event EventHandler PlottableDragged;

        [Obsolete("use 'PlottableDragged' instead", error: true)]
        public event EventHandler MouseDragPlottable;

        /// <summary>
        /// This event is invoked right after a draggable plottable was dropped.
        /// The object passed is the plottable that was just dropped.
        /// </summary>
        public event EventHandler PlottableDropped;

        [Obsolete("use 'PlottableDropped' instead", error: true)]
        public event EventHandler MouseDropPlottable;

        //定义ITouchAble的接口相关的事件
        public event Action<int, int> TouchDown;
        public event Action<int, int, int, int> TouchMove;
        public event Action<int, int> TouchUp;
        public event Action<int, int> TouchTranslation;
        public event Action<float> TouchRotation;
        public event Action<float, ScaleDirection> TouchScale;

        private readonly Control.ControlBackEnd Backend = new(1, 1);
        private readonly Dictionary<Cursor, System.Windows.Forms.Cursor> Cursors;
        private readonly bool IsDesignerMode = Process.GetCurrentProcess().ProcessName == "devenv";

        [Obsolete("Reference 'Plot' instead of 'plt'")]
        public Plot plt => Plot;

        public FormsPlot()
        {
            if (IsDesignerMode)
            {
                try
                {
                    Plot.Title($"ScottPlot {Plot.Version}");
                    Plot.Render();
                }
                catch (Exception e)
                {
                    InitializeComponent();
                    pictureBox1.Visible = false;
                    rtbErrorMessage.Visible = true;
                    rtbErrorMessage.Dock = DockStyle.Fill;
                    rtbErrorMessage.Text = "ERROR: ScottPlot failed to render in design mode.\n\n" +
                        "This may be due to incompatible System.Drawing.Common versions or a 32-bit/64-bit mismatch.\n\n" +
                        "Although rendering failed at design time, it may still function normally at runtime.\n\n" +
                        $"Exception details:\n{e}";
                    return;
                }
            }

            Backend.Resize(Width, Height, useDelayedRendering: false);
            Backend.BitmapChanged += new EventHandler(OnBitmapChanged);
            Backend.BitmapUpdated += new EventHandler(OnBitmapUpdated);
            Backend.CursorChanged += new EventHandler(OnCursorChanged);
            Backend.RightClicked += new EventHandler(OnRightClicked);
            Backend.AxesChanged += new EventHandler(OnAxesChanged);
            Backend.ZoomCreated += new EventHandler(OnZoomCreated);
            Backend.PlottableDragged += new EventHandler(OnPlottableDragged);
            Backend.PlottableDropped += new EventHandler(OnPlottableDropped);

            Cursors = new Dictionary<Cursor, System.Windows.Forms.Cursor>()
            {
                [ScottPlot.Cursor.Arrow] = System.Windows.Forms.Cursors.Arrow,
                [ScottPlot.Cursor.WE] = System.Windows.Forms.Cursors.SizeWE,
                [ScottPlot.Cursor.NS] = System.Windows.Forms.Cursors.SizeNS,
                [ScottPlot.Cursor.All] = System.Windows.Forms.Cursors.SizeAll,
                [ScottPlot.Cursor.Crosshair] = System.Windows.Forms.Cursors.Cross,
                [ScottPlot.Cursor.Hand] = System.Windows.Forms.Cursors.Hand,
                [ScottPlot.Cursor.Question] = System.Windows.Forms.Cursors.Help,
            };

            InitializeComponent();

            rtbErrorMessage.Visible = false;
            pictureBox1.BackColor = System.Drawing.Color.Transparent;
            BackColor = System.Drawing.Color.Transparent;
            Plot.Style(figureBackground: BackColor);
            pictureBox1.MouseWheel += PictureBox1_MouseWheel;
            RightClicked += DefaultRightClickEvent;

            Backend.StartProcessingEvents();
            SetStyle(ControlStyles.UserPaint |
                ControlStyles.AllPaintingInWmPaint |
                ControlStyles.OptimizedDoubleBuffer |
                ControlStyles.ResizeRedraw |
                ControlStyles.SupportsTransparentBackColor, true);

        }

        /// <summary>
        /// Return the mouse position on the plot (in coordinate space) for the latest X and Y coordinates
        /// </summary>
        public (double x, double y) GetMouseCoordinates() => Backend.GetMouseCoordinates();

        /// <summary>
        /// Return the mouse position (in pixel space) for the last observed mouse position
        /// </summary>
        public (float x, float y) GetMousePixel() => Backend.GetMousePixel();

        /// <summary>
        /// Reset this control by replacing the current plot with a new empty plot
        /// </summary>
        public void Reset() => Backend.Reset(Width, Height);

        /// <summary>
        /// Reset this control by replacing the current plot with an existing plot
        /// </summary>
        public void Reset(Plot newPlot) => Backend.Reset(Width, Height, newPlot);

        /// <summary>
        /// Re-render the plot and update the image displayed by this control.
        /// </summary>
        /// <param name="lowQuality">disable anti-aliasing to produce faster (but lower quality) plots</param>
        /// <param name="skipIfCurrentlyRendering"></param>
        public void Render(bool lowQuality = false, bool skipIfCurrentlyRendering = false)
        {
            Application.DoEvents();
            Backend.Render(lowQuality, skipIfCurrentlyRendering);
            this.Invalidate();
        }
        /// <summary>
        /// 余晖类型
        /// </summary>
        public WaveFormPersist WfmPersist
        {
            get
            {
                return Backend.WfmPersist;
            }
            set
            {
                Backend.WfmPersist = value;
            }
        }
        /// <summary>
        /// Request the control re-render the next time it is available.
        /// This method does not block the calling thread.
        /// </summary>
        public void RenderRequest(RenderType renderType = RenderType.LowQualityThenHighQualityDelayed) => Backend.RenderRequest(renderType);
        public void SetZoomingState(Boolean state)
        {
            Backend.IsZooming = state;
        }
        /// <summary>
        /// 清除无限余晖时的波形缓存
        /// </summary>
        public void ClearWfmCache()
        {
            Backend.ClearWfmCache();
        }
        private void PlottableCountTimer_Tick(object sender, EventArgs e) => Backend.RenderIfPlottableListChanged();
        private void FormsPlot_Load(object sender, EventArgs e) { OnSizeChanged(null, null); }
        private void OnBitmapUpdated(object sender, EventArgs e) { Application.DoEvents(); /*pictureBox1.Invalidate();*/ }
        private void OnBitmapChanged(object sender, EventArgs e) {/* pictureBox1.Image = Backend.GetLatestBitmap();*/ }
        private void OnCursorChanged(object sender, EventArgs e) => Cursor = Cursors[Backend.Cursor];
        private void OnSizeChanged(object sender, EventArgs e) => Backend.Resize(Width, Height, useDelayedRendering: true);//创建BMP
        private void OnAxesChanged(object sender, EventArgs e) => AxesChanged?.Invoke(this, e);
        private void OnZoomCreated(object sender, EventArgs e) => ZoomCreated?.Invoke(this, e);
        private void OnRightClicked(object sender, EventArgs e) => RightClicked?.Invoke(this, e);
        private void OnPlottableDragged(object sender, EventArgs e) => PlottableDragged?.Invoke(sender, e);
        private void OnPlottableDropped(object sender, EventArgs e) => PlottableDropped?.Invoke(sender, e);
        private void PictureBox1_MouseDown(object sender, MouseEventArgs e) { Backend.MouseDown(GetInputState(e)); base.OnMouseDown(e); }
        private void PictureBox1_MouseUp(object sender, MouseEventArgs e) { Backend.MouseUp(GetInputState(e)); base.OnMouseUp(e); }
        private void PictureBox1_DoubleClick(object sender, EventArgs e) { Backend.DoubleClick(); base.OnDoubleClick(e); }
        private void PictureBox1_MouseWheel(object sender, MouseEventArgs e) { Backend.MouseWheel(GetInputState(e)); base.OnMouseWheel(e); }
        private void PictureBox1_MouseMove(object sender, MouseEventArgs e) { Backend.MouseMove(GetInputState(e)); base.OnMouseMove(e); }
        private void PictureBox1_MouseEnter(object sender, EventArgs e) => base.OnMouseEnter(e);
        private void PictureBox1_MouseLeave(object sender, EventArgs e) => base.OnMouseLeave(e);

        //pictureBox1上的触摸的相关事件的处理

        private void pictureBox1_TouchDown(int x, int y)
        {
            Backend.MouseDown(GetInputState(new MouseEventArgs(MouseButtons.Left, 1, x, y, 0)));
            TouchDown?.Invoke(x, y);
        }

        private void pictureBox1_TouchUp(int x, int y)
        {
            Backend.MouseUp(GetInputState(new MouseEventArgs(MouseButtons.Left, 1, x, y, 0)));
            TouchUp?.Invoke(x, y);
        }

        private void pictureBox1_TouchScale(float scale, Uni_Trend.MSO7000X.Touch.ScaleDirection direction)
        {
            TouchScale?.Invoke(scale, direction);
        }

        private void pictureBox1_TouchMove(int x, int y, int transX,int transY)
        {
            Backend.MouseMove(GetInputState(new MouseEventArgs(MouseButtons.Left, 1, x, y, 0)));
            TouchMove?.Invoke(x, y,transX, transY);
        }

        private void pictureBox1_TouchRotation(float rotate)
        {
            TouchRotation?.Invoke(rotate);
        }

        private Control.InputState GetInputState(MouseEventArgs e) =>
            new()
            {
                X = e.X,
                Y = e.Y,
                LeftWasJustPressed = e.Button == MouseButtons.Left,
                RightWasJustPressed = e.Button == MouseButtons.Right,
                MiddleWasJustPressed = e.Button == MouseButtons.Middle,
                ShiftDown = ModifierKeys.HasFlag(Keys.Shift),
                CtrlDown = ModifierKeys.HasFlag(Keys.Control),
                AltDown = ModifierKeys.HasFlag(Keys.Alt),
                WheelScrolledUp = e.Delta > 0,
                WheelScrolledDown = e.Delta < 0,
            };
        protected override void OnPaint(PaintEventArgs e)
        {
            e.Graphics.DrawImage(Backend.GetLatestBitmap(), 0, 0);
            base.OnPaint(e);
        }
        /// <summary>
        /// Launch the default right-click menu.
        /// </summary>
        public void DefaultRightClickEvent(object sender, EventArgs e) => DefaultRightClickMenu.Show(System.Windows.Forms.Cursor.Position);
        private void RightClickMenu_Copy_Click(object sender, EventArgs e) => Clipboard.SetImage(Plot.Render());
        private void RightClickMenu_Help_Click(object sender, EventArgs e) => new FormHelp().Show();
        private void RightClickMenu_AutoAxis_Click(object sender, EventArgs e) { Plot.AxisAuto(); Render(); }
        private void RightClickMenu_OpenInNewWindow_Click(object sender, EventArgs e) => new FormsPlotViewer(Plot).Show();
        private void RightClickMenu_SaveImage_Click(object sender, EventArgs e)
        {
            var sfd = new SaveFileDialog
            {
                FileName = "ScottPlot.png",
                Filter = "PNG Files (*.png)|*.png;*.png" +
                         "|JPG Files (*.jpg, *.jpeg)|*.jpg;*.jpeg" +
                         "|BMP Files (*.bmp)|*.bmp;*.bmp" +
                         "|All files (*.*)|*.*"
            };

            if (sfd.ShowDialog() == DialogResult.OK)
                Plot.SaveFig(sfd.FileName);
        }
    }
}