/// <summary>
///
/// </summary>
/// <param name="jpeg_image_upload"></param>
/// <param name="target_width"></param>
/// <param name="target_height"></param>
/// <param name="fixedType"></param>
/// <param name="path">绝对路径</param>
/// <returns>返回是否保存成功</returns>
public static bool SaveFileImage(HttpPostedFileBase jpeg_image_upload, int target_width, int target_height, FixedRateType fixedType, string path)
{
bool isOkay = false;
Image original_image = null;
try
{
if (jpeg_image_upload != null&& !string.IsNullOrEmpty(path))
{
original_image = System.Drawing.Image.FromStream(jpeg_image_upload.InputStream);
string dirPath = path.Substring(0, path.LastIndexOfAny(new char[] { '\\', '/' }));
if (!Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
isOkay = SaveImage(original_image, target_width, target_height, fixedType, path);
}
}
catch (Exception ex)
{
LogUtil.Error("生成图片过程出错，详情："+ex.Message);
}
finally
{
if (original_image != null) original_image.Dispose();
}
return isOkay;
}
public BondCouponInfo(XmlNode xmlNode)
: base(xmlNode)
{
XmlNode typeNode = xmlNode.SelectSingleNode("type");
if (typeNode != null)
{
if (typeNode.Attributes["href"] != null || typeNode.Attributes["id"] != null)
{
if (typeNode.Attributes["id"] != null)
{
typeIDRef_ = typeNode.Attributes["id"].Value;
XsdTypeToken ob = new XsdTypeToken(typeNode);
IDManager.SetID(typeIDRef_, ob);
}
else if (typeNode.Attributes["href"] != null)
{
typeIDRef_ = typeNode.Attributes["href"].Value;
}
else
{
type_ = new XsdTypeToken(typeNode);
}
}
else
{
type_ = new XsdTypeToken(typeNode);
}
}
XmlNode fixedRateTypeNode = xmlNode.SelectSingleNode("fixedRateType");
if (fixedRateTypeNode != null)
{
if (fixedRateTypeNode.Attributes["href"] != null || fixedRateTypeNode.Attributes["id"] != null)
{
if (fixedRateTypeNode.Attributes["id"] != null)
{
fixedRateTypeIDRef_ = fixedRateTypeNode.Attributes["id"].Value;
FixedRateType ob = new FixedRateType(fixedRateTypeNode);
IDManager.SetID(fixedRateTypeIDRef_, ob);
}
else if (fixedRateTypeNode.Attributes["href"] != null)
{
fixedRateTypeIDRef_ = fixedRateTypeNode.Attributes["href"].Value;
}
else
{
fixedRateType_ = new FixedRateType(fixedRateTypeNode);
}
}
else
{
fixedRateType_ = new FixedRateType(fixedRateTypeNode);
}
}
}
/// <summary>
/// 保存图片
/// </summary>
/// <param name="original_image">图片数据</param>
/// <param name="target_width">画布宽度（图像宽度）</param>
/// <param name="target_height">画布高度（图像高度）</param>
/// <param name="fixedType">固定比率类型</param>
/// <param name="path">保存路径</param>
/// <returns>返回是否保存成功，失败可能原因：路径不正确 </returns>
public static bool SaveImage(Image original_image, int target_width, int target_height, FixedRateType fixedType, string path)
{
bool isOkay = true;
Image new_image = null;
int width = original_image.Width;
int height = original_image.Height;
int new_width, new_height;
#region 计算比例
float target_ratio = (float)target_width / (float)target_height;
float image_ratio = (float)width / (float)height;
switch (fixedType)
{
case FixedRateType.Fixed:
new_height = target_ratio > image_ratio ? target_height : (int)Math.Floor((float)target_width / image_ratio);
new_width = target_ratio > image_ratio ? (int)Math.Floor(image_ratio * (float)target_height) : target_width;
break;
case FixedRateType.FixedWidth:
new_height = (int)Math.Floor((float)target_width / image_ratio);
new_width = target_width;
target_height = new_height;
break;
case FixedRateType.FixedHeight:
new_height = target_height;
new_width = (int)Math.Floor(image_ratio * (float)target_height);
target_width = new_width;
break;
default:
new_width = target_width;
new_height = target_height;
break;
}
#endregion
Graphics graphics = null;
try
{
new_image = new Bitmap(target_width > new_width ? target_width : new_width,
target_height > new_height ? target_height : new_height);
graphics = Graphics.FromImage(new_image);
if (fixedType == FixedRateType.Fixed)
{ // 判断是否填充
graphics.FillRectangle(new SolidBrush(Color.White), new Rectangle(0, 0, target_width, target_height));
}
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
int paste_x = (target_width - new_width) / 2;
int paste_y = (target_height - new_height) / 2;
graphics.DrawImage(original_image, paste_x, paste_y, new_width, new_height);
new_image.Save(path);
}
catch
{
isOkay = false;
}
finally
{
if (graphics != null) graphics.Dispose();
if (new_image != null) new_image.Dispose();
}
return isOkay;
}
