using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;


namespace TProduct.PumpGraph.Picture
{
    public partial class LxpSeriesChart  
    {
        #region 是否黑白显示
        protected bool _isMonoColor = false;
        public bool IsMonoColor
        {
            get { return _isMonoColor; }
            set
            {
                _isMonoColor = value;

            }
        }
        #endregion




        #region 自定义背景色(默认白色)
        protected Color _backgroundColor = Color.White;
        public Color BackgroundColor
        {
            get { return _backgroundColor; }
            set { _backgroundColor = value; }
        }

        #endregion



        #region 绘制水印
        string _waterMarkText = null;
        public void SetWaterMarkText(string text_content)
        {
            _waterMarkText = text_content;
        }

        string _waterMarkLogoPath = null;
        public void SetWaterMarkLogoFile(string file_path)
        {
            _waterMarkLogoPath = file_path;
        }
 
        protected Color _colorWaterMark = Color.FromArgb(50, Color.Blue);

        public Action<Graphics,int , int > PrintWaterMarkCb = null;

        private bool isPrintWaterMark = true ;//是否有水印
        public bool IsPrintWaterMark
        {
            get { return isPrintWaterMark; }
            set { isPrintWaterMark = value; }
        }


        public void DrawWaterMark(Graphics g)
        {
            if (!isPrintWaterMark)
                return;
            //三种方式绘制水印
            DrawWaterMarkText(g);

            DrawWaterMarkLogo(g);

            if (PrintWaterMarkCb != null)
            {
                PrintWaterMarkCb(g,this._imageWidth,this._imageHeight);
            }
        }
        protected void DrawWaterMarkText(Graphics g)
        {
            if (string.IsNullOrEmpty(_waterMarkText))
                return;

            GraphicsState gs = g.Save();

            using (Font fontText = new Font("Arial", 30, FontStyle.Bold))
            using (SolidBrush drawBrush = new SolidBrush(_colorWaterMark))
            {
                g.ResetTransform();
                g.TranslateTransform(_imageWidth / 4, _imageHeight / 4 - 20); //设置旋转中心为文字中心
                g.RotateTransform(25);
                g.DrawString(_waterMarkText, fontText, drawBrush, 0, 0);

                g.ResetTransform();
                g.TranslateTransform(_imageWidth * 3 / 4 - 20, _imageHeight * 3 / 4 - 20); //设置旋转中心为文字中心
                g.RotateTransform(25);
                g.DrawString(_waterMarkText, fontText, drawBrush, 0, 0);
            }

            g.Restore(gs);
        }

        protected void DrawWaterMarkLogo(Graphics g)
        {
            if (string.IsNullOrEmpty(_waterMarkLogoPath))
                return;

            if (!System.IO.File.Exists(_waterMarkLogoPath))
            {
                return;
            }

            var imgWaterMark = System.Drawing.Image.FromFile(_waterMarkLogoPath);
            //插入水印宽度和高度
            int water_mark_image_width = imgWaterMark.Width;
            int water_mark_image_height = imgWaterMark.Height;

            //水印数量
            int water_image_number_x = (int)(this._chartDiagramSize.Width / (water_mark_image_width * 2.5));
            if (water_image_number_x < 0)
                water_image_number_x = 1;
            if (water_image_number_x > 3)
                water_image_number_x = 3;
            if (water_image_number_x <= 0)
                water_image_number_x = 1;

            int water_image_number_y = (int)(this._chartDiagramSize.Height / (water_mark_image_height * 4.0));
            if (water_image_number_y < 0)
                water_image_number_y = 1;
            if (water_image_number_y > 3)
                water_image_number_y = 3;
            if (water_image_number_y <= 0)
                water_image_number_y = 1;

            //添加水印
            for (int i = 0; i < water_image_number_x; i++)
            {
                for (int j = 0; j < water_image_number_y; j++)
                {
                    RectangleF rt1 = new RectangleF(
                        this._chartDiagramSize.Width * (i + 1) / (water_image_number_x + 1) - water_mark_image_width / 2,
                        this._chartDiagramSize.Height * (j + 1) / (water_image_number_y + 1) - water_mark_image_height / 2,
                        water_mark_image_width, water_mark_image_height);

                    g.DrawImage(imgWaterMark, rt1);
                }
            }



        }

        #endregion

    }
}