Winform水印工具(文字和图片皆可)
简介:如题Winform水印工具,原图和水印图都将以缩略图的形式展示在工具上
水印类型/水印内容:文字、图片
水印位置:左上角、右上角、居中、左下角、右下角
待优化:工具上的原图和水印图的缩略图都生成了物理文件再加载的,可改为图片对象
文字大小和字体样式可增加等
目前是单一图片的水印,可增加部分代码改成文件夹的批量水印
如下图:
代码展示:
WaterMarkBll.cs:
/*----------------------------------------
* Corporation:**
* Author:彭振
* Time:2015-10-23 16:08:54
* Remark:图片处理相关业务处理(水印、缩略图)
----------------------------------------*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing.Imaging;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;
using System.Collections;
namespace Watermark
{
/// <summary>
/// 水印的类型
/// </summary>
public enum WaterMarkType
{
/// <summary>
/// 文字水印
/// </summary>
TextMark,
/// <summary>
/// 图片水印
/// </summary>
ImageMark // 暂时只能添加文字水印
};
/// <summary>
/// 水印的位置
/// </summary>
public enum WaterMarkPosition
{
/// <summary>
/// 左上角
/// </summary>
WMP_Left_Top,
/// <summary>
/// 左下角
/// </summary>
WMP_Left_Bottom,
/// <summary>
/// 居中
/// </summary>
WMP_Center,
/// <summary>
/// 右上角
/// </summary>
WMP_Right_Top,
/// <summary>
/// 右下角
/// </summary>
WMP_Right_Bottom
};
/// <summary>
/// 图片处理相关业务处理(水印、缩略图)
/// </summary>
public class WaterMarkBll
{
public WaterMarkBll() { }
#region 给图片加水印
/// <summary>
/// 添加水印(分图片水印与文字水印两种)
/// </summary>
/// <param name="oldpath">原图片绝对地址</param>
/// <param name="newpath">新图片放置的绝对地址</param>
/// <param name="wmpPosition">要添加的水印的位置</param>
/// <param name="wmtType">要添加的水印的类型</param>
/// <param name="sWaterMarkContent">水印内容,若添加文字水印,此即为要添加的文字;
/// 若要添加图片水印,此为图片的路径</param>
public void addWaterMark(string oldpath, string newpath, WaterMarkPosition wmpPosition,
WaterMarkType wmtType, string sWaterMarkContent)
{
try
{
Image image = Image.FromFile(oldpath);
Bitmap b = new Bitmap(image.Width, image.Height,
PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(b);
g.Clear(Color.White);
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.High;
g.DrawImage(image, 0, 0, image.Width, image.Height);
switch (wmtType)
{
case WaterMarkType.TextMark:
//文字水印
this.addWatermarkText(g, sWaterMarkContent, wmpPosition.ToString(),
image.Width, image.Height);
break;
case WaterMarkType.ImageMark:
//图片水印
Image imageWatermark = Image.FromFile(sWaterMarkContent);
this.addWatermarkImage(g, imageWatermark, wmpPosition.ToString(), image.Width, image.Height);
break;
}
b.Save(newpath);
b.Dispose();
image.Dispose();
}
catch
{
if (File.Exists(oldpath))
{
//File.Delete(oldpath);
}
}
finally
{
if (File.Exists(oldpath))
{
//File.Delete(oldpath);
}
}
}
/// <summary>
/// 加水印文字
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="_watermarkText">水印文字内容</param>
/// <param name="_watermarkPosition">水印位置</param>
/// <param name="_width">被加水印图片的宽</param>
/// <param name="_height">被加水印图片的高</param>
private void addWatermarkText(Graphics picture, string _watermarkText,
string _watermarkPosition, int _width, int _height)
{
// 确定水印文字的字体大小
int[] sizes = new int[] { 32, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4 };
Font crFont = null;
SizeF crSize = new SizeF();
for (int i = 0; i < sizes.Length; i++)
{
crFont = new Font("Arial Black", sizes[i], FontStyle.Bold);
crSize = picture.MeasureString(_watermarkText, crFont);
if ((ushort)crSize.Width < (ushort)_width)
{
break;
}
}
// 生成水印图片(将文字写到图片中)
Bitmap floatBmp = new Bitmap((int)crSize.Width + 3,
(int)crSize.Height + 3, PixelFormat.Format32bppArgb);
Graphics fg = Graphics.FromImage(floatBmp);
PointF pt = new PointF(0, 0);
// 画阴影文字
Brush TransparentBrush0 = new SolidBrush(Color.FromArgb(255, Color.Black));
Brush TransparentBrush1 = new SolidBrush(Color.FromArgb(255, Color.Black));
fg.DrawString(_watermarkText, crFont, TransparentBrush0, pt.X, pt.Y + 1);
fg.DrawString(_watermarkText, crFont, TransparentBrush0, pt.X + 1, pt.Y);
fg.DrawString(_watermarkText, crFont, TransparentBrush1, pt.X + 1, pt.Y + 1);
fg.DrawString(_watermarkText, crFont, TransparentBrush1, pt.X, pt.Y + 2);
fg.DrawString(_watermarkText, crFont, TransparentBrush1, pt.X + 2, pt.Y);
TransparentBrush0.Dispose();
TransparentBrush1.Dispose();
// 画文字
fg.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
fg.DrawString(_watermarkText,
crFont, new SolidBrush(Color.White),
pt.X, pt.Y, StringFormat.GenericDefault);
// 保存刚才的操作
fg.Save();
fg.Dispose();
// floatBmp.Save("d:\\WebSite\\DIGITALKM\\ttt.jpg");
// 将水印图片加到原图中
this.addWatermarkImage(
picture,
new Bitmap(floatBmp),
_watermarkPosition,
_width,
_height);
}
/// <summary>
/// 加水印图片
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="iTheImage">Image对象(以此图片为水印)</param>
/// <param name="_watermarkPosition">水印位置</param>
/// <param name="_width">被加水印图片的宽</param>
/// <param name="_height">被加水印图片的高</param>
private void addWatermarkImage(Graphics picture, Image iTheImage,
string _watermarkPosition, int _width, int _height)
{
Image watermark = new Bitmap(iTheImage);
ImageAttributes imageAttributes = new ImageAttributes();
ColorMap colorMap = new ColorMap();
colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);
float[][] colorMatrixElements = {
new float[] {1.0f, 0.0f, 0.0f, 0.0f, 0.0f},
new float[] {0.0f, 1.0f, 0.0f, 0.0f, 0.0f},
new float[] {0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
new float[] {0.0f, 0.0f, 0.0f, 0.3f, 0.0f},
new float[] {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}
};
ColorMatrix colorMatrix = new ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
int xpos = 0;
int ypos = 0;
int WatermarkWidth = 0;
int WatermarkHeight = 0;
double bl = 1d;
//计算水印图片的比率
//取背景的1/4宽度来比较
if ((_width > watermark.Width * 4) && (_height > watermark.Height * 4))
{
bl = 1;
}
else if ((_width > watermark.Width * 4) && (_height < watermark.Height * 4))
{
bl = Convert.ToDouble(_height / 4) / Convert.ToDouble(watermark.Height);
}
else if ((_width < watermark.Width * 4) && (_height > watermark.Height * 4))
{
bl = Convert.ToDouble(_width / 4) / Convert.ToDouble(watermark.Width);
}
else
{
if ((_width * watermark.Height) > (_height * watermark.Width))
{
bl = Convert.ToDouble(_height / 4) / Convert.ToDouble(watermark.Height);
}
else
{
bl = Convert.ToDouble(_width / 4) / Convert.ToDouble(watermark.Width);
}
}
WatermarkWidth = Convert.ToInt32(watermark.Width * bl);
WatermarkHeight = Convert.ToInt32(watermark.Height * bl);
switch (_watermarkPosition)
{
case "WMP_Left_Top":
xpos = 10;
ypos = 10;
break;
case "WMP_Right_Top":
xpos = _width - WatermarkWidth - 10;
ypos = 10;
break;
case "WMP_Center":
xpos = (_width / 2) - (WatermarkWidth / 2);
ypos = (_height / 2) - (WatermarkHeight / 2);
break;
case "WMP_Right_Bottom":
xpos = _width - WatermarkWidth - 10;
ypos = _height - WatermarkHeight - 10;
break;
case "WMP_Left_Bottom":
xpos = 10;
ypos = _height - WatermarkHeight - 10;
break;
}
picture.DrawImage(
watermark,
new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight),
0,
0,
watermark.Width,
watermark.Height,
GraphicsUnit.Pixel,
imageAttributes);
watermark.Dispose();
imageAttributes.Dispose();
}
/// <summary>
/// 加水印图片
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="WaterMarkPicPath">水印图片的地址</param>
/// <param name="_watermarkPosition">水印位置</param>
/// <param name="_width">被加水印图片的宽</param>
/// <param name="_height">被加水印图片的高</param>
private void addWatermarkImage(Graphics picture, string WaterMarkPicPath,
string _watermarkPosition, int _width, int _height)
{
Image watermark = new Bitmap(WaterMarkPicPath);
this.addWatermarkImage(picture, watermark, _watermarkPosition, _width,
_height);
}
#endregion
#region 生成缩略图
/// <summary>
/// 保存图片
/// </summary>
/// <param name="image">Image 对象</param>
/// <param name="savePath">保存路径</param>
/// <param name="ici">指定格式的编解码参数</param>
private void SaveImage(Image image, string savePath, ImageCodecInfo ici)
{
//设置 原图片 对象的 EncoderParameters 对象
EncoderParameters parameters = new EncoderParameters(1);
parameters.Param[0] = new EncoderParameter(
System.Drawing.Imaging.Encoder.Quality, ((long)90));
image.Save(savePath, ici, parameters);
parameters.Dispose();
}
/// <summary>
/// 获取图像编码解码器的所有相关信息
/// </summary>
/// <param name="mimeType">包含编码解码器的多用途网际邮件扩充协议 (MIME) 类型的字符串</param>
/// <returns>返回图像编码解码器的所有相关信息</returns>
private ImageCodecInfo GetCodecInfo(string mimeType)
{
ImageCodecInfo[] CodecInfo = ImageCodecInfo.GetImageEncoders();
foreach (ImageCodecInfo ici in CodecInfo)
{
if (ici.MimeType == mimeType)
return ici;
}
return null;
}
/// <summary>
/// 生成缩略图
/// </summary>
/// <param name="sourceImagePath">原图片路径(相对路径)</param>
/// <param name="thumbnailImagePath">生成的缩略图路径,如果为空则保存为原图片路径(相对路径)</param>
/// <param name="thumbnailImageWidth">缩略图的宽度(高度与按源图片比例自动生成)</param>
public void ToThumbnailImages(
string SourceImagePath,
string ThumbnailImagePath,
int ThumbnailImageWidth)
{
Hashtable htmimes = new Hashtable();
htmimes[".jpeg"] = "image/jpeg";
htmimes[".jpg"] = "image/jpeg";
htmimes[".png"] = "image/png";
htmimes[".tif"] = "image/tiff";
htmimes[".tiff"] = "image/tiff";
htmimes[".bmp"] = "image/bmp";
htmimes[".gif"] = "image/gif";
// 取得原图片的后缀
string sExt = SourceImagePath.Substring(
SourceImagePath.LastIndexOf(".")).ToLower();
//从 原图片创建 Image 对象
Image image = Image.FromFile(SourceImagePath);
int num = ((ThumbnailImageWidth / 4) * 3);
int width = image.Width;
int height = image.Height;
//计算图片的比例
if ((((double)width) / ((double)height)) >= 1.3333333333333333f)
{
num = ((height * ThumbnailImageWidth) / width);
}
else
{
ThumbnailImageWidth = ((width * num) / height);
}
if ((ThumbnailImageWidth < 1) || (num < 1))
{
return;
}
//用指定的大小和格式初始化 Bitmap 类的新实例
Bitmap bitmap = new Bitmap(ThumbnailImageWidth, num,
PixelFormat.Format32bppArgb);
//从指定的 Image 对象创建新 Graphics 对象
Graphics graphics = Graphics.FromImage(bitmap);
//清除整个绘图面并以透明背景色填充
graphics.Clear(Color.Transparent);
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.High;
//在指定位置并且按指定大小绘制 原图片 对象
graphics.DrawImage(image, new Rectangle(0, 0, ThumbnailImageWidth, num));
image.Dispose();
try
{
//将此 原图片 以指定格式并用指定的编解码参数保存到指定文件
SaveImage(bitmap, ThumbnailImagePath,
GetCodecInfo((string)htmimes[sExt]));
}
catch (System.Exception e)
{
throw e;
}
}
#endregion
}
}
WaterMarkTool.cs:
/*----------------------------------------
* Corporation:**
* Author:彭振
* Time:2015-10-23 16:09:13
* Remark:生成水印工具
----------------------------------------*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Drawing.Imaging;
using System.IO;
namespace Watermark
{
public partial class WaterMarkTool : Form
{
public WaterMarkTool()
{
InitializeComponent();
}
/// <summary>
/// 选择要生成水印的图片
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void chooseFile_Click(object sender, EventArgs e)
{
if (this.openFileDialog1.ShowDialog() == DialogResult.OK)
{
this.tbFilePath.Text = this.openFileDialog1.FileName;
}
if (tbFilePath.Text.Trim() == "")
{
MessageBox.Show("源图片不存在!");
return;
}
else
{
string SourceImagePath = tbFilePath.Text.Trim();
string strPath = Path.GetFullPath(SourceImagePath).Replace(Path.GetFileName(SourceImagePath), "");
string sExt = SourceImagePath.Substring(
SourceImagePath.LastIndexOf(".")).ToLower();
string ThumbnailImage = strPath + DateTime.Now.Ticks.ToString() + sExt;
WaterMarkBll objWMB = new WaterMarkBll();
objWMB.ToThumbnailImages(SourceImagePath, ThumbnailImage, pbSourceImg.Width);
pbSourceImg.Image = Image.FromFile(ThumbnailImage);
}
}
/// <summary>
/// 生成水印
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btCreateWater_Click(object sender, EventArgs e)
{
if (tbFilePath.Text.Trim() == "")
{
MessageBox.Show("源图片不存在!");
return;
}
if (tbWaterContent.Text.Trim() == "")
{
MessageBox.Show("水印内容不存在!");
return;
}
if (!rbTypeFont.Checked && !rbTypeImg.Checked)
{
MessageBox.Show("水印类型未选择!");
return;
}
if (cbWaterPosition.Text.Trim() == "")
{
MessageBox.Show("水印位置未选择!");
return;
}
string SourceImagePath = tbFilePath.Text.Trim();
string strPath = Path.GetFullPath(SourceImagePath).Replace(Path.GetFileName(SourceImagePath), "");
string sExt = SourceImagePath.Substring(
SourceImagePath.LastIndexOf(".")).ToLower();
string SaveImagePath = strPath + DateTime.Now.Ticks.ToString() + sExt;
WaterMarkBll objWMB = new WaterMarkBll();
WaterMarkPosition wmpPosition = new WaterMarkPosition();
switch (cbWaterPosition.Text)
{
case "左上角":
wmpPosition = WaterMarkPosition.WMP_Left_Top;
break;
case "右上角":
wmpPosition = WaterMarkPosition.WMP_Right_Top;
break;
case "居中":
wmpPosition = WaterMarkPosition.WMP_Center;
break;
case "左下角":
wmpPosition = WaterMarkPosition.WMP_Left_Bottom;
break;
case "右下角":
wmpPosition = WaterMarkPosition.WMP_Right_Bottom;
break;
}
if (rbTypeFont.Checked)
{
objWMB.addWaterMark(SourceImagePath, SaveImagePath, wmpPosition, WaterMarkType.TextMark, tbWaterContent.Text);
}
else
{
objWMB.addWaterMark(SourceImagePath, SaveImagePath, wmpPosition, WaterMarkType.ImageMark, tbWaterContent.Text);
}
string ThumbnailImage = strPath + DateTime.Now.Ticks.ToString() + sExt;
objWMB.ToThumbnailImages(SaveImagePath, ThumbnailImage, pbWarterImg.Width);
pbWarterImg.Image = Image.FromFile(ThumbnailImage);
}
/// <summary>
/// 选择水印图片
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void chooseFolderPath_Click(object sender, EventArgs e)
{
if (this.openFileDialog2.ShowDialog() == DialogResult.OK)
{
this.tbWaterContent.Text = this.openFileDialog2.FileName;
}
}
}
}
项目代码及工具下载地址