using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Text;
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namespace TProduct.PumpGraph.Picture
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{
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public partial class LxpSeriesChart
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{
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#region 是否黑白显示
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protected bool _isMonoColor = false;
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public bool IsMonoColor
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{
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get { return _isMonoColor; }
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set
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{
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_isMonoColor = value;
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}
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}
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#endregion
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#region 自定义背景色(默认白色)
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protected Color _backgroundColor = Color.White;
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public Color BackgroundColor
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{
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get { return _backgroundColor; }
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set { _backgroundColor = value; }
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}
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#endregion
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#region 绘制水印
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string _waterMarkText = null;
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public void SetWaterMarkText(string text_content)
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{
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_waterMarkText = text_content;
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}
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string _waterMarkLogoPath = null;
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public void SetWaterMarkLogoFile(string file_path)
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{
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_waterMarkLogoPath = file_path;
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}
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protected Color _colorWaterMark = Color.FromArgb(50, Color.Blue);
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public Action<Graphics,int , int > PrintWaterMarkCb = null;
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private bool isPrintWaterMark = true ;//是否有水印
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public bool IsPrintWaterMark
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{
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get { return isPrintWaterMark; }
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set { isPrintWaterMark = value; }
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}
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public void DrawWaterMark(Graphics g)
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{
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if (!isPrintWaterMark)
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return;
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//三种方式绘制水印
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DrawWaterMarkText(g);
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DrawWaterMarkLogo(g);
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if (PrintWaterMarkCb != null)
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{
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PrintWaterMarkCb(g,this._imageWidth,this._imageHeight);
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}
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}
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protected void DrawWaterMarkText(Graphics g)
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{
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if (string.IsNullOrEmpty(_waterMarkText))
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return;
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GraphicsState gs = g.Save();
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using (Font fontText = new Font("Arial", 30, FontStyle.Bold))
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using (SolidBrush drawBrush = new SolidBrush(_colorWaterMark))
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{
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g.ResetTransform();
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g.TranslateTransform(_imageWidth / 4, _imageHeight / 4 - 20); //设置旋转中心为文字中心
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g.RotateTransform(25);
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g.DrawString(_waterMarkText, fontText, drawBrush, 0, 0);
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g.ResetTransform();
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g.TranslateTransform(_imageWidth * 3 / 4 - 20, _imageHeight * 3 / 4 - 20); //设置旋转中心为文字中心
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g.RotateTransform(25);
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g.DrawString(_waterMarkText, fontText, drawBrush, 0, 0);
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}
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g.Restore(gs);
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}
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protected void DrawWaterMarkLogo(Graphics g)
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{
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if (string.IsNullOrEmpty(_waterMarkLogoPath))
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return;
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if (!System.IO.File.Exists(_waterMarkLogoPath))
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{
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return;
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}
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var imgWaterMark = System.Drawing.Image.FromFile(_waterMarkLogoPath);
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//插入水印宽度和高度
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int water_mark_image_width = imgWaterMark.Width;
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int water_mark_image_height = imgWaterMark.Height;
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//水印数量
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int water_image_number_x = (int)(this._chartDiagramSize.Width / (water_mark_image_width * 2.5));
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if (water_image_number_x < 0)
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water_image_number_x = 1;
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if (water_image_number_x > 3)
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water_image_number_x = 3;
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if (water_image_number_x <= 0)
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water_image_number_x = 1;
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int water_image_number_y = (int)(this._chartDiagramSize.Height / (water_mark_image_height * 4.0));
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if (water_image_number_y < 0)
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water_image_number_y = 1;
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if (water_image_number_y > 3)
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water_image_number_y = 3;
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if (water_image_number_y <= 0)
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water_image_number_y = 1;
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//添加水印
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for (int i = 0; i < water_image_number_x; i++)
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{
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for (int j = 0; j < water_image_number_y; j++)
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{
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RectangleF rt1 = new RectangleF(
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this._chartDiagramSize.Width * (i + 1) / (water_image_number_x + 1) - water_mark_image_width / 2,
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this._chartDiagramSize.Height * (j + 1) / (water_image_number_y + 1) - water_mark_image_height / 2,
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water_mark_image_width, water_mark_image_height);
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g.DrawImage(imgWaterMark, rt1);
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}
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}
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}
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#endregion
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}
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}
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