ASP.NET中实现在图片上打水印
2009-12-09 17:16
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/**
* 来自网络，稍微进行了一下改动
* 修改时间：2009-12-9 17：30
* 交流qq：914229451
*/
//命名空间
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string strfilename = Server.MapPath("testimage/5.bmp");//未加水印前的图片
string outfilename = Server.MapPath("testimage/7.jpg");//加水印后生成的的图片文件，文件名可自行设置，扩展名可以为.bmp.jpg等任一种图片格式，均可
string copyfilename = Server.MapPath("testimage/done.gif");//水印图片
string strplace = "2";//水印图片在要加水印图片的位置
CreateCopyRightImage(strfilename, outfilename, copyfilename, strplace, false);
}
/// <summary>
/// 在图片上加入图片版权信息
/// </summary>
/// <param name="strFileName">输入图片（绝对路径）</param>
/// <param name="outfilename">输出图片（绝对路径）</param>
/// <param name="strCopyRightFile">水印图片（绝对路径）</param>
/// <param name="strPlace">水印位置</param>
/// <param name="bFileName">是否删除输入图片</param>
public static void CreateCopyRightImage(string strFileName,string outfilename,string strCopyRightFile,string strPlace,bool bFileName)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(strFileName);
System.Drawing.Image copyimage = System.Drawing.Image.FromFile(strCopyRightFile);
System.Drawing.Bitmap output = new Bitmap(image);
System.Drawing.Graphics gimage = System.Drawing.Graphics.FromImage(output);
int IntX = 0;
int IntY = 0;
if (strPlace == "1") // 在左上
{
IntX = 0;
IntY = 0;
}
else if (strPlace == "2") // 在正上
{
IntX = (image.Width-copyimage.Width)/2;
IntY = 0;
}
else if (strPlace == "3") // 在右上
{
IntX = image.Width-copyimage.Width;
IntY = 0;
}
else if (strPlace == "4") // 在正左
{
IntX = 0;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "5") // 在中间
{
IntX = (image.Width-copyimage.Width)/2;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "6") // 在正右
{
IntX = image.Width-copyimage.Width;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "7") // 在左下
{
IntX = 0;
IntY = image.Height-copyimage.Height;
}
else if (strPlace == "8") // 在正下
{
IntX = (image.Width-copyimage.Width)/2;
IntY = image.Height-copyimage.Height;
}
else if (strPlace == "9") // 在右下
{
IntX = image.Width-copyimage.Width;
IntY = image.Height-copyimage.Height;
}
else
{
IntX = image.Width-copyimage.Width-10;
IntY = image.Height-copyimage.Height-10;
}
gimage.DrawImage(copyimage, IntX, IntY, copyimage.Width, copyimage.Height);
string strExtend = strFileName.Substring(strFileName.LastIndexOf('.') + 1).ToLower();
switch (strExtend)
{
case "bmp":
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Bmp);
break;
case "":
break;
case "jpg" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case "gif" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Gif);
break;
case "icon" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Icon);
break;
case "png" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Png);
break;
case "tif" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Tiff);
break;
default :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
}
gimage.Dispose();
output.Dispose();
image.Dispose();
copyimage.Dispose();
if (bFileName)//是否删除未加水印的图片
File.Delete(strFileName);
}
}/**
* 来自网络，稍微进行了一下改动
* 修改时间：2009-12-9 17：30
* 交流qq：914229451
*/
//命名空间
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string strfilename = Server.MapPath("testimage/5.bmp");//未加水印前的图片
string outfilename = Server.MapPath("testimage/7.jpg");//加水印后生成的的图片文件，文件名可自行设置，扩展名可以为.bmp.jpg等任一种图片格式，均可
string copyfilename = Server.MapPath("testimage/done.gif");//水印图片
string strplace = "2";//水印图片在要加水印图片的位置
CreateCopyRightImage(strfilename, outfilename, copyfilename, strplace, false);
}
/// <summary>
/// 在图片上加入图片版权信息
/// </summary>
/// <param name="strFileName">输入图片（绝对路径）</param>
/// <param name="outfilename">输出图片（绝对路径）</param>
/// <param name="strCopyRightFile">水印图片（绝对路径）</param>
/// <param name="strPlace">水印位置</param>
/// <param name="bFileName">是否删除输入图片</param>
public static void CreateCopyRightImage(string strFileName,string outfilename,string strCopyRightFile,string strPlace,bool bFileName)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(strFileName);
System.Drawing.Image copyimage = System.Drawing.Image.FromFile(strCopyRightFile);
System.Drawing.Bitmap output = new Bitmap(image);
System.Drawing.Graphics gimage = System.Drawing.Graphics.FromImage(output);
int IntX = 0;
int IntY = 0;
if (strPlace == "1") // 在左上
{
IntX = 0;
IntY = 0;
}
else if (strPlace == "2") // 在正上
{
IntX = (image.Width-copyimage.Width)/2;
IntY = 0;
}
else if (strPlace == "3") // 在右上
{
IntX = image.Width-copyimage.Width;
IntY = 0;
}
else if (strPlace == "4") // 在正左
{
IntX = 0;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "5") // 在中间
{
IntX = (image.Width-copyimage.Width)/2;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "6") // 在正右
{
IntX = image.Width-copyimage.Width;
IntY = (image.Height-copyimage.Height)/2;
}
else if (strPlace == "7") // 在左下
{
IntX = 0;
IntY = image.Height-copyimage.Height;
}
else if (strPlace == "8") // 在正下
{
IntX = (image.Width-copyimage.Width)/2;
IntY = image.Height-copyimage.Height;
}
else if (strPlace == "9") // 在右下
{
IntX = image.Width-copyimage.Width;
IntY = image.Height-copyimage.Height;
}
else
{
IntX = image.Width-copyimage.Width-10;
IntY = image.Height-copyimage.Height-10;
}
gimage.DrawImage(copyimage, IntX, IntY, copyimage.Width, copyimage.Height);
string strExtend = strFileName.Substring(strFileName.LastIndexOf('.') + 1).ToLower();
switch (strExtend)
{
case "bmp":
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Bmp);
break;
case "":
break;
case "jpg" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
case "gif" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Gif);
break;
case "icon" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Icon);
break;
case "png" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Png);
break;
case "tif" :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Tiff);
break;
default :
output.Save(outfilename, System.Drawing.Imaging.ImageFormat.Jpeg);
break;
}
gimage.Dispose();
output.Dispose();
image.Dispose();
copyimage.Dispose();
if (bFileName)//是否删除未加水印的图片
File.Delete(strFileName);
}
}
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