using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using PaintDotNet.Base.SettingModel;

namespace PaintDotNet.GeneralAnalysis.Artwork
{
    public partial class ArtworkUserControl : UserControl
    {
        private ArtworkModel.Item m_artwork;
        private Bitmap m_artBitmap;
        private Bitmap m_targetBitmap;
        private Bitmap m_overlapBitmap;

        public ArtworkUserControl()
        {
            InitializeComponent();
        }

        public virtual void Init()
        {
        }

        public virtual bool ArtChanged { get; set; }
        public virtual bool AuxiliaryLineEnabled { get; set; }
        public virtual bool GridLineEnabled { get; set; }
        public virtual int Transparency { get; set; }

        public virtual int TargetTransparency { get; set; }

        public virtual bool GenerateTargetPoint { get; set; }

        public ArtworkModel.Item Artwork
        {
            set { this.m_artwork = value; }
            get { return this.m_artwork; }
        }

        public Bitmap ArtBitmap
        {
            get
            {
                return this.m_artBitmap;
            }
            set
            {
                this.m_artBitmap = value;
                BitmapArray[0] = this.m_artBitmap;
                CalcOverlapWidthAndHeight();
                Init();
            }
        }

        public Bitmap TargetBitmap
        {
            get
            {
                return this.m_targetBitmap;
            }
            set
            {
                this.m_targetBitmap = value;
                BitmapArray[1] = this.m_targetBitmap;
                CalcOverlapWidthAndHeight();
                Init();
            }
        }

        public Bitmap TargetBitmapClone { get; set; }

        public Bitmap[] BitmapArray { get; } = new Bitmap[2];

        public int OverlapWidth { get; set; }
        public int OverlapHeight { get; set; }

        /// <summary>
        /// 工艺图和目标图拼合后的图片
        /// </summary>
        public Bitmap OverlapBitmap
        {
            get
            {
                return this.m_overlapBitmap;
            }
            set
            {
                this.m_overlapBitmap = value;
                Init();
            }
        }

        /// <summary>
        /// 目标图移动的相对y坐标
        /// </summary>
        public int TargetTop { get; set; } = 0;

        /// <summary>
        /// 目标图移动的相对x坐标
        /// </summary>
        public int TargetLeft { get; set; } = 0;



        private void CalcOverlapWidthAndHeight()
        {
            OverlapWidth = 0;
            OverlapHeight = 0;
            if (ArtBitmap != null)
            {
                OverlapWidth = ArtBitmap.Width;
                OverlapHeight = ArtBitmap.Height;
            }

            if (TargetBitmap != null)
            {
                OverlapWidth = OverlapWidth > TargetBitmap.Width ? OverlapWidth : TargetBitmap.Width;
                OverlapHeight = OverlapHeight > TargetBitmap.Height ? OverlapHeight : TargetBitmap.Height;
            }


        }

        public enum OverlapType
        {
            CENTER = 0,  //中间重叠
            TOPLEFT = 1, //左上角
        }

        public Bitmap Overlap(OverlapType type)
        {
            Bitmap[] bitmaps = this.BitmapArray;
            int width = this.OverlapWidth;
            int height = this.OverlapHeight;

            if (width == 0 || height == 0) {
                return null;
            }

            Bitmap bmPhoto = new Bitmap(width, height);
            float x = 0;
            float y = 0;
            //load the Bitmap into a Graphics object 
            Graphics grPhoto = Graphics.FromImage(bmPhoto);
            //Set the rendering quality for this Graphics object
            grPhoto.SmoothingMode = SmoothingMode.AntiAlias;//清除锯齿的呈现
                                                            //haix
            for (int i = 0; i < bitmaps.Length; i++)
            {
                Bitmap img = bitmaps[i];
                if(img == null)
                {
                    continue;
                }
                if (type == OverlapType.CENTER)
                {
                    x = (width - img.Width) / 2.0f;
                    y = (height - img.Height) / 2.0f;
                    if (i == 1)
                    {
                        x += TargetLeft;
                        y += TargetTop;
                    }
                }
                
                grPhoto.DrawImage(img, new PointF(x,y));
            }

            return bmPhoto;
        }

        //定义图像透明度调整函数
        public Bitmap MakeTransparent(Bitmap src, int num)
        {
            return ImageTools.MakeTransparent(src, num);
        }

    }
}