![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
CutImage
1
void CutImage(HttpPostedFile post,string ppuid,out string imagename)
2![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
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System.Drawing.Image SourceImg = System.Drawing.Image.FromStream(post.InputStream);
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if (SourceImg.Height > ConfigHelper.UserFaceMaxHeight)
5![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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this._lbl_upload_msg.Text = "最大高度不得大于 " + ConfigHelper.UserFaceMaxHeight;
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return;
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}
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if (SourceImg.Width > ConfigHelper.UserFaceMaxWidth)
10![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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this._lbl_upload_msg.Text = "最大宽度不得大于 " + ConfigHelper.UserFaceMaxWidth;
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return;
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}
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ImageFormat format = getImageformat(System.IO.Path.GetExtension(post.FileName));
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string filename = ppuid+"."+format.ToString();
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imagename = filename;
17![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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if (!UserFaceDir.EndsWith("\\"))
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UserFaceDir = UserFaceDir+"\\";
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filename = UserFaceDir + filename;
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int SourceImgWidth = SourceImg.Width;
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int SourceImgHeight = SourceImg.Height;
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if ((SourceImgWidth != ConfigHelper.UserFaceWidth) && (SourceImgHeight != ConfigHelper.UserFaceHeight))
24![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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//如果宽高比例为1:1,则直接构成缩略图
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if (((Double)SourceImgWidth / SourceImgHeight) == 1)
27![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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System.Drawing.Image thumbimg = SourceImg.GetThumbnailImage(ConfigHelper.UserFaceWidth, ConfigHelper.UserFaceHeight, null, IntPtr.Zero);
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thumbimg.Save(filename, format);
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thumbimg.Dispose();
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SourceImg.Dispose();
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return;
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}
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Bitmap bit = new Bitmap(SourceImg);
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Rectangle rec = new Rectangle(); //构造一个Rectangle类,一个矩形
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rec.Width = ConfigHelper.UserFaceWidth;
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rec.Height = ConfigHelper.UserFaceHeight;
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if (SourceImgWidth > rec.Width)
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rec.X = (SourceImgWidth - rec.Width) / 2;
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else
41![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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rec.X = 0;
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rec.Width = SourceImg.Width;
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}
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if (SourceImgHeight > rec.Height)
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rec.Y = (SourceImgHeight - rec.Height) / 2;
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else
48![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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rec.Y = 0;
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rec.Height = SourceImg.Height;
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}
52![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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try
54![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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//这里就是把从上传过程中构造的bitmap克隆一份,并按定义好的矩形裁剪
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bit.Clone(rec, PixelFormat.DontCare).Save(filename, format);
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}
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catch (Exception ex)
59![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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this._lbl_upload_msg.Text = ex.Message;
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return;
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}
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finally
64![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
{
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bit.Dispose();
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SourceImg.Dispose();
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}
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}
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}
70![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
posted @
2009-11-26 13:06
周骏
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