/// <summary>
/// 生成缩略图并打水印再保存。
/// </summary>
/// <Param name="originalImageStream">Stream</Param>
/// <Param name="strFileName">源图路径（物理路径）</Param>
/// <Param name="thumbnailPath">缩略图路径（物理路径）</Param>
/// <Param name="maxWidth">缩略图最大宽度</Param>
/// <Param name="maxheight">缩略图最大高度</Param>
/// <Param name="mode">生成缩略图的方式</Param>
/// <Param name="waterPath">水印图路径（物理路径）</Param>
/// <Param name="edge">水印图离原图边界的距离</Param>
/// <Param name="position">加图片水印的位置</Param>
/// <returns>是否成功</returns>
public static bool MakeThumbnailWater(Stream originalImageStream, string strFileName, string thumbnailPath, int maxWidth, int maxheight, ThumbnailModeOption mode, string waterPath, int edge, WaterPositionOption position)
{
bool success = false;
try
{
// 生成缩略图
MakeThumbnail(originalImageStream, strFileName, thumbnailPath, maxWidth, maxheight, mode);
Stream stream = File.Open(thumbnailPath, FileMode.Open);
//打水印
MakeWaterImage(stream, strFileName, thumbnailPath, waterPath, edge, position);
success = true;
}
catch (Exception /*ex*/)
{
success = false;
throw;
}
return(success);
}
/// <summary>
/// 加水印图片并保存。
/// </summary>
/// <Param name="originalImageStream">Stream</Param>
/// <Param name="strFileName">源图路径（物理路径）</Param>
/// <Param name="savePath">图片保存路径（物理路径）</Param>
/// <Param name="waterPath">水印图路径（物理路径）</Param>
/// <Param name="edge">水印图离原图边界的距离</Param>
/// <Param name="position">加图片水印的位置</Param>
/// <returns>是否成功</returns>
public static bool MakeWaterImage(Stream originalImageStream, string strFileName, string savePath, string waterPath, int edge, WaterPositionOption position)
{
bool success = false;
int x = 0;
int y = 0;
Image waterImage = null;
Image image = null;
Bitmap bitmap = null;
Graphics graphics = null;
try
{
//加载原图
image = Image.FromStream(originalImageStream);
//加载水印图
waterImage = Image.FromFile(waterPath);
bitmap = new Bitmap(image);
graphics = Graphics.FromImage(bitmap);
int newEdge = edge;
if (newEdge >= image.Width + waterImage.Width)
{
newEdge = 10;
}
switch (position)
{
case WaterPositionOption.LeftTop:
x = newEdge;
y = newEdge;
break;
case WaterPositionOption.CenterTop:
x = (image.Width - waterImage.Width) / 2;
y = newEdge;
break;
case WaterPositionOption.RightTop:
x = image.Width - waterImage.Width - newEdge;
y = newEdge;
break;
case WaterPositionOption.LeftBottom:
x = newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.CenterBottom:
x = (image.Width - waterImage.Width) / 2;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.RightBottom:
x = image.Width - waterImage.Width - newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.Middle:
x = (image.Width - waterImage.Width) / 2;
y = (image.Height - waterImage.Height) / 2;
break;
default:
goto case WaterPositionOption.RightBottom;
}
// 画水印图片
graphics.DrawImage(waterImage, new Rectangle(x, y, waterImage.Width, waterImage.Height), 0, 0, waterImage.Width, waterImage.Height, GraphicsUnit.Pixel);
// 关闭打开着的文件并保存（覆盖）新图片
originalImageStream.Close();
bitmap.Save(savePath, GetImageFormat(strFileName));
success = true;
}
catch (Exception /*ex*/)
{
success = false;
throw;
//throw new Exception(ex.Message.Replace("'", " ").Replace("\n", " ").Replace("\\", "/"));
}
finally
{
if (graphics != null)
{
graphics.Dispose();
}
if (bitmap != null)
{
bitmap.Dispose();
}
if (image != null)
{
image.Dispose();
}
if (waterImage != null)
{
waterImage.Dispose();
}
}
return(success);
}
/// <summary>
/// 生成缩略图并打水印再保存。
/// </summary>
/// <param name="originalImageStream">Stream</param>
/// <param name="strFileName">源图路径（物理路径）</param>
/// <param name="thumbnailPath">缩略图路径（物理路径）</param>
/// <param name="maxWidth">缩略图最大宽度</param>
/// <param name="maxheight">缩略图最大高度</param>
/// <param name="mode">生成缩略图的方式</param>
/// <param name="waterPath">水印图路径（物理路径）</param>
/// <param name="edge">水印图离原图边界的距离</param>
/// <param name="position">加图片水印的位置</param>
/// <returns>是否成功</returns>
public static bool MakeThumbnailWater(Stream originalImageStream, string strFileName, string thumbnailPath, int maxWidth, int maxheight, ThumbnailModeOption mode, string waterPath, int edge, WaterPositionOption position)
{
bool success = false;
try
{
// 生成缩略图
MakeThumbnail(originalImageStream, strFileName, thumbnailPath, maxWidth, maxheight, mode);
Stream stream = File.Open(thumbnailPath, FileMode.Open);
//打水印
MakeWaterImage(stream, strFileName, thumbnailPath, waterPath, edge, position);
success = true;
}
catch (Exception ex)
{
success = false;
throw;
}
return success;
}
/// <summary>
/// 加水印图片并保存。
/// </summary>
/// <param name="originalImageStream">Stream</param>
/// <param name="strFileName">源图路径（物理路径）</param>
/// <param name="savePath">图片保存路径（物理路径）</param>
/// <param name="waterPath">水印图路径（物理路径）</param>
/// <param name="edge">水印图离原图边界的距离</param>
/// <param name="position">加图片水印的位置</param>
/// <returns>是否成功</returns>
public static void MakeWaterImage(Stream originalImageStream, string strFileName, string savePath, string waterPath, int edge, WaterPositionOption position)
{
Image waterImage = null;
Image image = null;
Bitmap bitmap = null;
Graphics graphics = null;
try
{
//加载原图
image = Image.FromStream(originalImageStream);
//加载水印图
waterImage = Image.FromFile(waterPath);
bitmap = new Bitmap(image);
graphics = Graphics.FromImage(bitmap);
int newEdge = edge;
if (newEdge >= image.Width + waterImage.Width)
{
newEdge = 10;
}
int x, y;
switch (position)
{
case WaterPositionOption.LeftTop:
x = newEdge;
y = newEdge;
break;
case WaterPositionOption.CenterTop:
x = (image.Width - waterImage.Width) / 2;
y = newEdge;
break;
case WaterPositionOption.RightTop:
x = image.Width - waterImage.Width - newEdge;
y = newEdge;
break;
case WaterPositionOption.LeftBottom:
x = newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.CenterBottom:
x = (image.Width - waterImage.Width) / 2;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.RightBottom:
x = image.Width - waterImage.Width - newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.Middle:
x = (image.Width - waterImage.Width) / 2;
y = (image.Height - waterImage.Height) / 2;
break;
default:
goto case WaterPositionOption.RightBottom;
}
// 画水印图片
graphics.DrawImage(waterImage, new Rectangle(x, y, waterImage.Width, waterImage.Height), 0, 0, waterImage.Width, waterImage.Height, GraphicsUnit.Pixel);
// 关闭打开着的文件并保存（覆盖）新图片
originalImageStream.Close();
bitmap.Save(savePath, GetImageFormat(strFileName));
}
catch
{
throw;
}
finally
{
if (graphics != null)
{
graphics.Dispose();
}
if (bitmap != null)
{
bitmap.Dispose();
}
if (image != null)
{
image.Dispose();
}
if (waterImage != null)
{
waterImage.Dispose();
}
}
}
/// <summary>
/// 加水印图片并保存。
/// </summary>
/// <param name="originalImageStream">Stream</param>
/// <param name="strFileName">源图路径（物理路径）</param>
/// <param name="savePath">图片保存路径（物理路径）</param>
/// <param name="waterPath">水印图路径（物理路径）</param>
/// <param name="edge">水印图离原图边界的距离</param>
/// <param name="position">加图片水印的位置</param>
/// <returns>是否成功</returns>
public static bool MakeWaterImage(Stream originalImageStream, string strFileName, string savePath, string waterPath, int edge, WaterPositionOption position)
{
bool success = false;
int x = 0;
int y = 0;
Image waterImage = null;
Image image = null;
Bitmap bitmap = null;
Graphics graphics = null;
try
{
//加载原图
image = Image.FromStream(originalImageStream);
//加载水印图
waterImage = Image.FromFile(waterPath);
bitmap = new Bitmap(image);
graphics = Graphics.FromImage(bitmap);
int newEdge = edge;
if (newEdge >= image.Width + waterImage.Width) newEdge = 10;
switch (position)
{
case WaterPositionOption.LeftTop:
x = newEdge;
y = newEdge;
break;
case WaterPositionOption.CenterTop:
x = (image.Width - waterImage.Width) / 2;
y = newEdge;
break;
case WaterPositionOption.RightTop:
x = image.Width - waterImage.Width - newEdge;
y = newEdge;
break;
case WaterPositionOption.LeftBottom:
x = newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.CenterBottom:
x = (image.Width - waterImage.Width) / 2;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.RightBottom:
x = image.Width - waterImage.Width - newEdge;
y = image.Height - waterImage.Height - newEdge;
break;
case WaterPositionOption.Middle:
x = (image.Width - waterImage.Width) / 2;
y = (image.Height - waterImage.Height) / 2;
break;
default:
goto case WaterPositionOption.RightBottom;
}
// 画水印图片
graphics.DrawImage(waterImage, new Rectangle(x, y, waterImage.Width, waterImage.Height), 0, 0, waterImage.Width, waterImage.Height, GraphicsUnit.Pixel);
// 关闭打开着的文件并保存（覆盖）新图片
originalImageStream.Close();
bitmap.Save(savePath, GetImageFormat(strFileName));
success = true;
}
catch (Exception ex)
{
success = false;
throw;
//throw new Exception(ex.Message.Replace("'", " ").Replace("\n", " ").Replace("\\", "/"));
}
finally
{
if (graphics != null) graphics.Dispose();
if (bitmap != null) bitmap.Dispose();
if (image != null) image.Dispose();
if (waterImage != null) waterImage.Dispose();
}
return success;
}
