public static void Change()
{
Bitmap myBitmap;
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
// Create a Bitmap object based on a BMP file.
myBitmap = new Bitmap(@"D:\Shapes.jpg");
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/jpeg");
// Create an Encoder object based on the GUID
// for the Quality parameter category.
myEncoder = Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
myEncoderParameters = new EncoderParameters(1);
// Save the bitmap as a JPEG file with quality level 25.
myEncoderParameter = new EncoderParameter(myEncoder, 25L);
myEncoderParameters.Param[0] = myEncoderParameter;
myBitmap.Save(@"c:\temp.jpg", myImageCodecInfo, myEncoderParameters);
Byte[] bytes = File.ReadAllBytes(@"c:\temp.jpg");
// Save the bitmap as a JPEG file with quality level 50.
//myEncoderParameter = new EncoderParameter(myEncoder, 50L);
//myEncoderParameters.Param[0] = myEncoderParameter;
//myBitmap.Save(@"D:\Shapes050.jpg", myImageCodecInfo, myEncoderParameters);
//// Save the bitmap as a JPEG file with quality level 75.
//myEncoderParameter = new EncoderParameter(myEncoder, 75L);
//myEncoderParameters.Param[0] = myEncoderParameter;
//myBitmap.Save(@"D:\Shapes075.jpg", myImageCodecInfo, myEncoderParameters);
}
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Form["width"] != null && Request.Form["width"] != String.Empty)
{
// image dimensions
int width = Int32.Parse((Request.Form["width"].IndexOf('.') != -1) ? Request.Form["width"].Substring(0, Request.Form["width"].IndexOf('.')) : Request.Form["width"]);
int height = Int32.Parse((Request.Form["height"].IndexOf('.') != -1) ? Request.Form["height"].Substring(0, Request.Form["height"].IndexOf('.')) : Request.Form["height"]);
// image
Bitmap result = new Bitmap(width, height);
// set pixel colors
for (int y = 0; y < height; y++)
{
// column counter for the row
int x = 0;
// get current row data
string[] row = Request.Form["r" + y].Split(new char[]{','});
// set pixels in the row
for (int c = 0; c < row.Length; c++)
{
// get pixel color and repeat count
string[] pixel = row[c].Split(new char[] { ':' });
Color current_color = ColorTranslator.FromHtml("#" + pixel[0]);
int repeat = pixel.Length > 1 ? Int32.Parse(pixel[1]) : 1;
// set pixel(s)
for (int l = 0; l < repeat; l++)
{
result.SetPixel(x, y, current_color);
x++;
}
}
}
// output image
// image type
Response.ContentType = "image/jpeg";
// find image encoder for selected type
ImageCodecInfo[] encoders;
ImageCodecInfo img_encoder = null;
encoders = ImageCodecInfo.GetImageEncoders();
foreach (ImageCodecInfo codec in encoders)
if (codec.MimeType == Response.ContentType)
{
img_encoder = codec;
break;
}
// image parameters
EncoderParameter jpeg_quality = new EncoderParameter(Encoder.Quality, 100L); // for jpeg images only
EncoderParameters enc_params = new EncoderParameters(1);
enc_params.Param[0] = jpeg_quality;
result.Save(Response.OutputStream, img_encoder, enc_params);
}
}
public void Page_Load(Object sender, EventArgs e) {
try{
//Get the width and height from form
width = Int32.Parse(Request["width"]);
height = Int32.Parse(Request["height"]);
}catch(Exception ex){
//If the width and height has not been given, we cannot create the image.
Response.Write("Image width and height not provided.");
Response.End();
}
//Background color, request and set default
bgcolor = Request["bgcolor"];
if (bgcolor=="" || bgcolor==null){
bgcolor = "FFFFFF";
}
//Conver the bg color in ASP.NET format
bgColor = ColorTranslator.FromHtml("#" + bgcolor);
//Decompress the data
//data = decompress(Request["data"]);
data = (Request["data"]);
//Parse data
rows = new String[height+1];
rows = data.Split(';');
//Build the image now
buildBitmap();
//Output it now
Response.ContentType = "image/jpeg";
Response.AddHeader("Content-Disposition", "attachment; filename=\"FusionCharts.jpg\"");
//Now, we need to encode the image using an encoder.
//Find the encoder.
ImageCodecInfo[] encoders;
ImageCodecInfo img_encoder = null;
encoders = ImageCodecInfo.GetImageEncoders();
foreach (ImageCodecInfo codec in encoders){
if (codec.MimeType == Response.ContentType){
img_encoder = codec;
break;
}
}
//Set the quality as 100
EncoderParameter jpeg_quality = new EncoderParameter(Encoder.Quality, 100L);
EncoderParameters enc_params = new EncoderParameters(1);
//Convey the parameter
enc_params.Param[0] = jpeg_quality;
//Save to output stream after applying proper encoders
chart.Save(Response.OutputStream, img_encoder, enc_params);
//Dispose the bitmap
gr.Dispose();
chart.Dispose();
}
public static void SaveJpeg(string path, Image image, int quality)
{
if ((quality < 0) || (quality > 100))
{
string error = string.Format("Jpeg image quality must be between 0 and 100, with 100 being the highest quality. A value of {0} was specified.", quality);
throw new ArgumentOutOfRangeException(error);
}
EncoderParameter qualityParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);
ImageCodecInfo jpegCodec = GetEncoderInfo("image/jpeg");
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
image.Save(path, jpegCodec, encoderParams);
}
public static void SaveJpeg(string path, System.Drawing.Image img, int quality, string typeS)
{
if (quality < 0 || quality > 100)
throw new ArgumentOutOfRangeException("quality must be between 0 and 100.");
// Encoder parameter for image quality
EncoderParameter qualityParam =
new EncoderParameter(Encoder.Quality, quality);
// Jpeg image codec
ImageCodecInfo jpegCodec = GetEncoderInfo(typeS);
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
img.Save(path, jpegCodec, encoderParams);
}
public static Stream SaveAsJpeg(this Image img, int quality = 90)
{
MemoryStream ms = new MemoryStream();
ImageCodecInfo myImageCodecInfo;
System.Drawing.Imaging.Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = GetEncoderInfo("image/jpeg");
myEncoder = System.Drawing.Imaging.Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, quality);
myEncoderParameters.Param[0] = myEncoderParameter;
img.Save(ms, myImageCodecInfo, myEncoderParameters);
return ms;
}
/// <summary>
/// Method to resize, convert and save the image.
/// </summary>
/// <param name="image">Bitmap image.</param>
/// <param name="maxWidth">resize width.</param>
/// <param name="maxHeight">resize height.</param>
/// <param name="quality">quality setting value.</param>
/// <param name="filePath">file path.</param>
public void Save(Bitmap image, int maxWidth, int maxHeight, int quality, string filePath)
{
// Get the image's original width and height
int originalWidth = image.Width;
int originalHeight = image.Height;
// To preserve the aspect ratio
float ratioX = (float)maxWidth / (float)originalWidth;
float ratioY = (float)maxHeight / (float)originalHeight;
float ratio = Math.Min(ratioX, ratioY);
// New width and height based on aspect ratio
int newWidth = (int)(originalWidth * ratio);
int newHeight = (int)(originalHeight * ratio);
// Convert other formats (including CMYK) to RGB.
Bitmap newImage = new Bitmap(newWidth, newHeight, PixelFormat.Format24bppRgb);
// Draws the image in the specified size with quality mode set to HighQuality
using (Graphics graphics = Graphics.FromImage(newImage))
{
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.DrawImage(image, 0, 0, newWidth, newHeight);
}
// Get an ImageCodecInfo object that represents the JPEG codec.
ImageCodecInfo imageCodecInfo = this.GetEncoderInfo(ImageFormat.Jpeg);
// Create an Encoder object for the Quality parameter.
Encoder encoder = Encoder.Quality;
// Create an EncoderParameters object.
EncoderParameters encoderParameters = new EncoderParameters(1);
// Save the image as a JPEG file with quality level.
EncoderParameter encoderParameter = new EncoderParameter(encoder, quality);
encoderParameters.Param[0] = encoderParameter;
newImage.Save(filePath, imageCodecInfo, encoderParameters);
}
/// <summary>
/// 无损压缩图片
/// </summary>
/// <param name="sFile">原图片地址</param>
/// <param name="dFile">压缩后保存图片地址</param>
/// <param name="quality">压缩质量（数字越小压缩率越高）1-100</param>
/// <param name="size">压缩后图片的最大大小</param>
/// <param name="sfsc">是否是第一次调用</param>
/// <returns></returns>
public static bool CompressImage(string sFile, string dFile, byte quality = 90, int size = 1024, bool sfsc = true)
{
//如果是第一次调用，原始图像的大小小于要压缩的大小，则直接复制文件，并且返回true
var firstFileInfo = new FileInfo(sFile);
if (sfsc && firstFileInfo.Length < size * 1024)
{
firstFileInfo.CopyTo(dFile);
return(true);
}
using Image iSource = Image.FromFile(sFile);
int dHeight = iSource.Height;
int dWidth = iSource.Width;
int sW, sH;
//按比例缩放
Size temSize = new Size(iSource.Width, iSource.Height);
if (temSize.Width > dHeight || temSize.Width > dWidth)
{
if (temSize.Width * dHeight > temSize.Width * dWidth)
{
sW = dWidth;
sH = dWidth * temSize.Height / temSize.Width;
}
else
{
sH = dHeight;
sW = temSize.Width * dHeight / temSize.Height;
}
}
else
{
sW = temSize.Width;
sH = temSize.Height;
}
using Bitmap bmpp = new Bitmap(dWidth, dHeight);
using Graphics g = Graphics.FromImage(bmpp);
g.Clear(Color.WhiteSmoke);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(iSource, new Rectangle((dWidth - sW) / 2, (dHeight - sH) / 2, sW, sH), 0, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);
//以下代码为保存图片时，设置压缩质量
using var ep = new EncoderParameters();
using var eParam = new EncoderParameter(Encoder.Quality, new long[] { quality });
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayIci = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegIcIinfo = arrayIci.FirstOrDefault(t => t.FormatDescription.Equals("JPEG"));
if (jpegIcIinfo != null)
{
bmpp.Save(dFile, jpegIcIinfo, ep);//dFile是压缩后的新路径
FileInfo fi = new FileInfo(dFile);
if (fi.Length > 1024 * size && quality > 10)
{
quality -= 10;
CompressImage(sFile, dFile, quality, size, false);
}
}
else
{
bmpp.Save(dFile, iSource.RawFormat);
}
return(true);
}
catch
{
return(false);
}
}
/// <summary>
/// Create By Xu In 2018.09.29
/// Edit By Xu In 2018.10.23 //Add BitMap.Dispose();
/// Edit By Xu In 2018_10_29 //strFileName -> strFilePath ,Meaning You Need't Add ".FileFormat" In "strFilePath" But Must Assign ST_SaveOrLoadImgData.iImgFormat To Figure Out File Format;
/// Function: Save Img To Native.
/// </summary>
/// <param name="strFileName">FilePath+FileName</param>
/// <param name="stReadImgData">ST_SaveOrLoadImgData</param>
/// <param name="iImgQuality">Low 0->100 High</param>
/// <returns></returns>
public string SaveImg(string strFilePath, ST_SaveOrLoadImgData stSaveImgData, int iImgQuality)
{
string strMsg = string.Empty;
string strFileName = string.Empty;
try
{
if (strFilePath == null)
{
return("FilePath_Is_Null");
}
switch (stSaveImgData.iImgFormat)//Edit By Xu In 2018_10_30
{
case 0:
if (
(strFilePath[strFilePath.Length - 4] == 46) && //"."
(strFilePath[strFilePath.Length - 3] == 98 || strFilePath[strFilePath.Length - 3] == 66) && //"bB"
(strFilePath[strFilePath.Length - 2] == 109 || strFilePath[strFilePath.Length - 2] == 77) && //"mM"
(strFilePath[strFilePath.Length - 1] == 112 || strFilePath[strFilePath.Length - 1] == 80) //"pP"
)
{
strFileName = strFilePath;
}
else
{
strFileName = strFilePath + ".bmp";
}
break;
case 1:
if (
(strFilePath[strFilePath.Length - 4] == 46) &&
(strFilePath[strFilePath.Length - 3] == 106 || strFilePath[strFilePath.Length - 3] == 74) && //"jJ"
(strFilePath[strFilePath.Length - 2] == 112 || strFilePath[strFilePath.Length - 2] == 80) && //"pP"
(strFilePath[strFilePath.Length - 1] == 103 || strFilePath[strFilePath.Length - 1] == 71) //"gG"
)
{
strFileName = strFilePath;
}
else
{
strFileName = strFilePath + ".jpg";
}
break;
case 2:
SaveImg(strFilePath, stSaveImgData); //.imgdat
return("Format_Is_.imgdat");
default:
return("File_Format_Params_Err");
}
if (stSaveImgData.iImgFormat == 0 && stSaveImgData.bUseOpcv == true)
{
byte[] byFileName = System.Text.Encoding.Default.GetBytes(strFileName);
float[] AfarrParams = new float[3];
AfarrParams[0] = (float)strFileName.Length;
AfarrParams[1] = (float)stSaveImgData.iWidth;
AfarrParams[2] = (float)stSaveImgData.iHeight;
_cvFunc.SaveImgByOpcv(byFileName, stSaveImgData.byImgDataR, stSaveImgData.byImgDataG, stSaveImgData.byImgDataB, AfarrParams);
return(strMsg);
}
Bitmap bmp = new Bitmap(stSaveImgData.iWidth, stSaveImgData.iHeight, PixelFormat.Format24bppRgb);
int iWidth = stSaveImgData.iWidth;
int iHeight = stSaveImgData.iHeight;
int iLength = iWidth * iHeight;
//获取图像的BitmapData对像
System.Drawing.Imaging.BitmapData data = bmp.LockBits(new Rectangle(0, 0, iWidth, iHeight), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
//循环处理
unsafe
{
int iOffset = data.Stride - data.Width * 3;
byte *ptr = (byte *)(data.Scan0);
byte *ptr_b;
byte *ptr_g;
byte *ptr_r;
ptr_b = (byte *)System.Runtime.InteropServices.Marshal.UnsafeAddrOfPinnedArrayElement(stSaveImgData.byImgDataB, 0);
ptr_g = (byte *)System.Runtime.InteropServices.Marshal.UnsafeAddrOfPinnedArrayElement(stSaveImgData.byImgDataG, 0);
ptr_r = (byte *)System.Runtime.InteropServices.Marshal.UnsafeAddrOfPinnedArrayElement(stSaveImgData.byImgDataR, 0);
if (iOffset == 0)
{
for (int i = 0; i < iLength; i++)
{
*ptr++ = *ptr_b++;
*ptr++ = *ptr_g++;
*ptr++ = *ptr_r++;
}
}
else
{
for (int i = 0; i < iHeight; i++)
{
for (int j = 0; j < iWidth; j++)
{
*ptr++ = *ptr_b++;
*ptr++ = *ptr_g++;
*ptr++ = *ptr_r++;
}
ptr += iOffset;
}
}
}
switch (stSaveImgData.iImgFormat)
{
case 0:
bmp.Save(strFileName, System.Drawing.Imaging.ImageFormat.Bmp);
break;
case 1:
EncoderParameter p;
EncoderParameters ps;
ps = new EncoderParameters(1);
if (iImgQuality > 100)
{
iImgQuality = 100;
}
else if (iImgQuality < 0)
{
iImgQuality = 80;
}
p = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, iImgQuality);
ps.Param[0] = p;
bmp.Save(strFileName, GetCodecInfo("image/jpeg"), ps);
break;
default:
bmp.Save(strFileName, System.Drawing.Imaging.ImageFormat.Bmp);
break;
}
bmp.Dispose();//Edit By Xu In 2018.10.23
}
catch (Exception e)
{
strMsg += "SaveImgErr" + e.Message.ToString();
}
return(strMsg);
}
private static void WriteLongLat(string fileIn, string fileOut, byte latDeg, byte latMin, double latSec, byte lonDeg, byte lonMin, double lonSec, bool isWest, bool isNorth)
{
const int length = 25;
Encoder Enc = Encoder.Transformation;
var EncParms = new EncoderParameters(1);
ImageCodecInfo CodecInfo = GetEncoderInfo("image/jpeg");
// TODO: do not load the image to change again
Image img = Image.FromFile(fileIn);
PropertyItem[] PropertyItems = img.PropertyItems;
int oldArrLength = PropertyItems.Length;
var newProperties = new PropertyItem[oldArrLength];
img.PropertyItems.CopyTo(newProperties, 0);
newProperties[0].Id = 0x0002;
newProperties[0].Type = 5; //5-R 4-L 3-S
newProperties[0].Len = length;
newProperties[0].Value = new byte[length];
try {
for (int i = 0; i < length; i++)
{
newProperties[0].Value[i] = 0;
}
}
catch (Exception ex) {
logger.InfoException("in WriteLongLat got an exception", ex);
}
//PropertyItems[0].Value = Pic.GetPropertyItem(4).Value; // bDescription;
newProperties[0].Value[0] = latDeg;
newProperties[0].Value[8] = latMin;
byte secHelper = (byte)(latSec / 2.56);
byte secRemains = (byte)((latSec - (secHelper * 2.56)) * 100);
newProperties[0].Value[16] = secRemains; // add to the sum below x_x_*17_+16
newProperties[0].Value[17] = secHelper; // multiply by 2.56
newProperties[0].Value[20] = 100;
img.SetPropertyItem(newProperties[0]);
newProperties[1].Id = 0x0004;
newProperties[1].Type = 5; //5-R 4-L 3-S
newProperties[1].Len = length;
newProperties[1].Value = new byte[length];
try {
for (int i = 0; i < length; i++)
{
newProperties[1].Value[i] = 0;
}
}
catch (Exception e) {
Console.WriteLine("Error {0}", e);
}
newProperties[1].Value[0] = lonDeg;
newProperties[1].Value[8] = lonMin;
secHelper = (byte)(lonSec / 2.56);
secRemains = (byte)((lonSec - (secHelper * 2.56)) * 100);
newProperties[1].Value[16] = secRemains;
// add to the sum bellow x_x_*17_+16
newProperties[1].Value[17] = secHelper;
// multiply by 2.56
newProperties[1].Value[20] = 100;
// multiply by 2.56
//PropertyItem current = Pic.GetPropertyItem(2);
img.SetPropertyItem(newProperties[1]);
//GPS Version
newProperties[0].Id = 0x0000;
newProperties[0].Type = 1;
newProperties[0].Len = 4;
newProperties[0].Value[0] = 2;
newProperties[0].Value[1] = 2;
newProperties[0].Value[2] = 0;
newProperties[0].Value[3] = 0;
img.SetPropertyItem(newProperties[0]);
//GPS Lat REF
newProperties[0].Id = 0x0001;
newProperties[0].Type = 2;
newProperties[0].Len = 2;
if (isNorth)
{
newProperties[0].Value[0] = 78; //ASCII for N
}
else
{
newProperties[0].Value[0] = 83; //ASCII for S
}
newProperties[0].Value[1] = 0;
img.SetPropertyItem(newProperties[0]);
//GPS Lon REF
newProperties[0].Id = 0x0003;
newProperties[0].Type = 2; //5-R 4-L 3-S
newProperties[0].Len = 2;
if (isWest == false)
{
newProperties[0].Value[0] = 69; //ASCII for E
}
else
{
newProperties[0].Value[0] = 87; //ASCII for W
}
newProperties[0].Value[1] = 0;
img.SetPropertyItem(newProperties[0]);
// we cannot store in the same image, so use a temporary image instead
string FilenameTemp = fileIn + ".temp";
// for lossless rewriting must rotate the image by 90 degrees!
EncoderParameter EncParm = new EncoderParameter(Enc, (long)EncoderValue.TransformRotate90);
EncParms.Param[0] = EncParm;
// now write the rotated image with new description
img.Save(FilenameTemp, CodecInfo, EncParms);
// for computers with low memory and large pictures: release memory now
img.Dispose();
img = null;
GC.Collect();
// delete the original file, will be replaced later
if (string.IsNullOrEmpty(fileOut))
{
File.Delete(fileIn);
}
// now must rotate back the written picture
img = Image.FromFile(FilenameTemp);
EncParm = new EncoderParameter(Enc, (long)EncoderValue.TransformRotate270);
EncParms.Param[0] = EncParm;
if (string.IsNullOrEmpty(fileOut))
{
img.Save(fileIn, CodecInfo, EncParms);
}
else
{
img.Save(fileOut, CodecInfo, EncParms);
}
// release memory now
img.Dispose();
img = null;
GC.Collect();
// delete the temporary picture
File.Delete(FilenameTemp);
}
public static string SaveMarkerPhoto(byte[] markerPhoto, bool mini)
{
var virtualPath = $@"{MarkerPhotos}\{Guid.NewGuid()}.jpg";
var jpgEncoder = GetEncoder(ImageFormat.Jpeg);
var siteRoot = GetPublicContent();
if (siteRoot != null)
{
var savePath = $@"{siteRoot}\{virtualPath}";
using (var stream = new MemoryStream(markerPhoto))
{
var myEncoder =
Encoder.Quality;
var myEncoderParameters = new EncoderParameters(1);
var myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
var firstBitmap = new Bitmap(stream);
if (Array.IndexOf(firstBitmap.PropertyIdList, 274) > -1)
{
var orientation = (int)firstBitmap.GetPropertyItem(274).Value[0];
switch (orientation)
{
case 1:
// No rotation required.
break;
case 2:
firstBitmap.RotateFlip(RotateFlipType.RotateNoneFlipX);
break;
case 3:
firstBitmap.RotateFlip(RotateFlipType.Rotate180FlipNone);
break;
case 4:
firstBitmap.RotateFlip(RotateFlipType.Rotate180FlipX);
break;
case 5:
firstBitmap.RotateFlip(RotateFlipType.Rotate90FlipX);
break;
case 6:
firstBitmap.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
case 7:
firstBitmap.RotateFlip(RotateFlipType.Rotate270FlipX);
break;
case 8:
firstBitmap.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
// This EXIF data is now invalid and should be removed.
firstBitmap.RemovePropertyItem(274);
}
if (!mini)
{
firstBitmap.Save(savePath);
}
else
{
firstBitmap.Save(savePath, jpgEncoder, myEncoderParameters);
}
}
}
else
{
throw new MyException(Errors.UnknownError);
}
return(virtualPath);
}
/// <summary>
/// 图片水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkFilename">水印文件相对路径</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="watermarkTransparency">水印的透明度 1--10 10为不透明</param>
public static void AddImageSignPic(string imgPath, string filename, string watermarkFilename, int watermarkStatus, int quality, int watermarkTransparency)
{
if (!File.Exists(GetMapPath(imgPath)))
{
return;
}
byte[] _ImageBytes = File.ReadAllBytes(GetMapPath(imgPath));
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
filename = GetMapPath(filename);
if (watermarkFilename.StartsWith("/") == false)
{
watermarkFilename = "/" + watermarkFilename;
}
watermarkFilename = GetMapPath(watermarkFilename);
if (!File.Exists(watermarkFilename))
{
return;
}
Graphics g = Graphics.FromImage(img);
//设置高质量插值法
//g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
//g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
Image watermark = new Bitmap(watermarkFilename);
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
{
return;
}
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 transparency = 0.5F;
if (watermarkTransparency >= 1 && watermarkTransparency <= 10)
{
transparency = (watermarkTransparency / 10.0F);
}
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, transparency, 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;
switch (watermarkStatus)
{
case 1:
xpos = (int)(img.Width * (float).01);
ypos = (int)(img.Height * (float).01);
break;
case 2:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)(img.Height * (float).01);
break;
case 3:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)(img.Height * (float).01);
break;
case 4:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 5:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 6:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 7:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 8:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 9:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
}
g.DrawImage(watermark, new Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
{
ici = codec;
}
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
watermark.Dispose();
imageAttributes.Dispose();
}
/// <summary>
/// GetImageBytesWithJpegQuality
/// </summary>
/// <param name="image"></param>
/// <param name="level"></param>
/// <returns></returns>
public static byte[] GetImageBytesWithJpegQuality(Image image, int level)
{
if (image == null)
{
return(null);
}
byte[] buff = null;
try
{
if (myEncoderParameters == null)
{
myImageCodecInfo = null;
ImageCodecInfo[] en_list = ImageCodecInfo.GetImageEncoders();
foreach (ImageCodecInfo en in en_list)
{
if (en.MimeType.ToLower() == "image/jpeg")
{
myImageCodecInfo = en;
break;
}
}
System.Drawing.Imaging.Encoder mQuality = System.Drawing.Imaging.Encoder.Quality;
EncoderParameter myEncoderParameter = new EncoderParameter(mQuality, (long)level);//25L);
myEncoderParameters = new EncoderParameters(1);
myEncoderParameters.Param[0] = myEncoderParameter;
}
MemoryStream mem_stream = new MemoryStream();
image.Save(mem_stream, myImageCodecInfo, myEncoderParameters);
buff = mem_stream.ToArray();
mem_stream.Close();
return(buff);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.ToString());
}
try
{
MemoryStream mem_stream = new MemoryStream();
image.Save(mem_stream, ImageFormat.Jpeg);
buff = mem_stream.ToArray();
mem_stream.Close();
return(buff);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.ToString());
}
try
{
MemoryStream mem_stream = new MemoryStream();
image.Save(mem_stream, ImageFormat.Gif);
buff = mem_stream.ToArray();
mem_stream.Close();
return(buff);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.ToString());
}
try
{
MemoryStream mem_stream = new MemoryStream();
image.Save(mem_stream, ImageFormat.Bmp);
buff = mem_stream.ToArray();
mem_stream.Close();
return(buff);
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.ToString());
}
return(null);
}
/// <summary>
/// 添加图片水印
/// </summary>
/// <param name="oldFilePath">原始图片路径</param>
/// <param name="newFilePath">将要添加水印图片路径</param>
/// <param name="waterPosition">水印位置</param>
/// <param name="waterImagePath">水印图片路径</param>
/// <param name="transparency">透明度</param>
/// <param name="quality">质量</param>
public static void CreateWaterImage(string oldFilePath, string newFilePath, int waterPosition, string waterImagePath, int watermarkTransparency, int quality)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(oldFilePath);
Bitmap bmp = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.White);
g.DrawImage(image, 0, 0, image.Width, image.Height);
//设置透明度
System.Drawing.Image watermark = new Bitmap(waterImagePath);
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 transparency = 0.5F;
if (watermarkTransparency >= 1 && watermarkTransparency <= 10)
{
transparency = (watermarkTransparency / 10.0F);
}
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, transparency, 0.0f}, //注意：倒数第二处为0.0f为完全透明，1.0f为完全不透明
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 _width = image.Width;
int _height = image.Height;
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 * 2) && (_height > watermark.Height * 2))
{
bl = 1;
}
else if ((_width > watermark.Width * 2) && (_height < watermark.Height * 2))
{
bl = Convert.ToDouble(_height / 2) / Convert.ToDouble(watermark.Height);
}
else if ((_width < watermark.Width * 2) && (_height > watermark.Height * 2))
{
bl = Convert.ToDouble(_width / 2) / Convert.ToDouble(watermark.Width);
}
else
{
if ((_width * watermark.Height) > (_height * watermark.Width))
{
bl = Convert.ToDouble(_height / 2) / Convert.ToDouble(watermark.Height);
}
else
{
bl = Convert.ToDouble(_width / 2) / Convert.ToDouble(watermark.Width);
}
}
WatermarkWidth = Convert.ToInt32(watermark.Width * bl);
WatermarkHeight = Convert.ToInt32(watermark.Height * bl);
switch (waterPosition)
{
case 3:
xpos = _width - WatermarkWidth - 10;
ypos = 10;
break;
case 2:
xpos = 10;
ypos = _height - WatermarkHeight - 10;
break;
case 5:
xpos = _width / 2 - WatermarkWidth / 2;
ypos = _height / 2 - WatermarkHeight / 2;
break;
case 1:
xpos = 10;
ypos = 10;
break;
case 4:
default:
xpos = _width - WatermarkWidth - 10;
ypos = _height - WatermarkHeight - 10;
break;
}
g.DrawImage(watermark, new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
try
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
{
ici = codec;
}
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
bmp.Save(newFilePath, ici, encoderParams);
}
else
{
bmp.Save(newFilePath);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
watermark.Dispose();
imageAttributes.Dispose();
image.Dispose();
bmp.Dispose();
}
}
public void SaveMultipage(Image[] bmp, string location, string type)
{
if (bmp != null)
{
try
{
ImageCodecInfo codecInfo = getCodecForstring(type);
for (int i = 0; i < bmp.Length; i++)
{
if (bmp[i] == null)
{
break;
}
bmp[i] = (Image)ConvertToBitonal((Bitmap)bmp[i]);
}
if (bmp.Length == 1)
{
EncoderParameters iparams = new EncoderParameters(1);
Encoder iparam = Encoder.Compression;
EncoderParameter iparamPara = new EncoderParameter(iparam, (long)(EncoderValue.CompressionCCITT4));
iparams.Param[0] = iparamPara;
bmp[0].Save(location, codecInfo, iparams);
}
else if (bmp.Length > 1)
{
Encoder saveEncoder;
Encoder compressionEncoder;
EncoderParameter SaveEncodeParam;
EncoderParameter CompressionEncodeParam;
EncoderParameters EncoderParams = new EncoderParameters(2);
saveEncoder = Encoder.SaveFlag;
compressionEncoder = Encoder.Compression;
// Save the first page (frame).
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.MultiFrame);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParams.Param[0] = CompressionEncodeParam;
EncoderParams.Param[1] = SaveEncodeParam;
File.Delete(location);
bmp[0].Save(location, codecInfo, EncoderParams);
for (int i = 1; i < bmp.Length; i++)
{
if (bmp[i] == null)
{
break;
}
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.FrameDimensionPage);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParams.Param[0] = CompressionEncodeParam;
EncoderParams.Param[1] = SaveEncodeParam;
bmp[0].SaveAdd(bmp[i], EncoderParams);
}
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.Flush);
EncoderParams.Param[0] = SaveEncodeParam;
bmp[0].SaveAdd(EncoderParams);
}
//return true;
}
catch (System.Exception ee)
{
throw new Exception(ee.Message + " Error in saving as multipage ");
}
}
//return false;
}
public static void AddThumbnail(string imagePath, int width, string fileNameAddition, string fileSavePath)
{
bool renameImage = true;
string savePath = "";
try
{
System.IO.Stream imageStream = File.Open(imagePath, FileMode.Open, FileAccess.Read, FileShare.Read);
try
{
string imageNameWithoutExt = System.IO.Path.GetFileNameWithoutExtension(imagePath);
savePath = fileSavePath.TrimEnd('\\') + "\\" + imageNameWithoutExt;
savePath += fileNameAddition;
savePath += ".jpg";
if (!File.Exists(savePath))
{
System.Drawing.Image mg = System.Drawing.Image.FromStream(imageStream, true);
double multiplier = (double)width / mg.Width;
int newWidth = width;
int newHeight = (int)(mg.Height * multiplier);
Size newSize = new Size(newWidth, newHeight);
Bitmap bp = new Bitmap(newSize.Width, newSize.Height);
Graphics g = Graphics.FromImage(bp);
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
Rectangle rect = new Rectangle(0, 0, newSize.Width, newSize.Height);
g.DrawImage(mg, rect, 0, 0, mg.Width, mg.Height, GraphicsUnit.Pixel);
foreach (PropertyItem pItem in mg.PropertyItems)
{
bp.SetPropertyItem(pItem);
}
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo codec = null;
for (int i = 0; i < codecs.Length; i++)
{
if (codecs[i].MimeType.Equals("image/jpeg"))
codec = codecs[i];
}
if (codec != null)
{
EncoderParameters encoderParameters = new EncoderParameters(2);
System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameter encoderParameter = new EncoderParameter(encoder, 95L);
encoderParameters.Param[0] = encoderParameter;
encoder = System.Drawing.Imaging.Encoder.ColorDepth;
encoderParameter = new EncoderParameter(encoder, 100L);
encoderParameters.Param[1] = encoderParameter;
bp.Save(savePath, codec, encoderParameters);
}
}
}
catch
{
renameImage = false;
}
finally
{
imageStream.Close();
}
}
catch
{
//Could not open image
}
//if (insituResize && renameImage && savePath != "")
//{
// System.IO.File.Delete(imagePath);
// System.IO.File.Move(savePath, imagePath);
//}
}
/// <summary>
/// 图片水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkFilename">水印文件相对路径</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="watermarkTransparency">水印的透明度 1--10 10为不透明</param>
public static void AddImageSignPic(string imgPath, string filename, string watermarkFilename, int watermarkStatus, int quality, int watermarkTransparency)
{
byte[] _ImageBytes = File.ReadAllBytes(Utils.GetMapPath(imgPath));
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
filename = HttpContext.Current.Server.MapPath(filename);
if (watermarkFilename.StartsWith("/") == false)
watermarkFilename = "/" + watermarkFilename;
watermarkFilename = Utils.GetMapPath(watermarkFilename);
if (!File.Exists(watermarkFilename))
return;
Graphics g = Graphics.FromImage(img);
//设置高质量插值法
//g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
//g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
Image watermark = new Bitmap(watermarkFilename);
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
return;
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 transparency = 0.5F;
if (watermarkTransparency >= 1 && watermarkTransparency <= 10)
transparency = (watermarkTransparency / 10.0F);
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, transparency, 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;
switch (watermarkStatus)
{
case 1:
xpos = (int)(img.Width * (float).01);
ypos = (int)(img.Height * (float).01);
break;
case 2:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)(img.Height * (float).01);
break;
case 3:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)(img.Height * (float).01);
break;
case 4:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 5:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 6:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 7:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 8:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 9:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
}
g.DrawImage(watermark, new Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
ici = codec;
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
quality = 80;
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
img.Save(filename, ici, encoderParams);
else
img.Save(filename);
g.Dispose();
img.Dispose();
watermark.Dispose();
imageAttributes.Dispose();
}
private void ProcessImage(IFile w, IProgress <ModelProgressUpdate> progress = null)
{
if (Cancel)
{
Interlocked.Decrement(ref _totalImages);
progress?.Report(new ModelProgressUpdate(_totalImages, _doneImages));
return;
}
if (w != null)
{
var outFmt = w.Options.OutputOptions.OutputFormat == Format.Default ? Options.OutputOptions.OutputFormat : w.Options.OutputOptions.OutputFormat;
// Load Image
Image b = null;
try
{
b = StaticImageUtils.LoadImage(w);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
}
if (b == null)
{
Interlocked.Decrement(ref _totalImages);
progress?.Report(new ModelProgressUpdate(_totalImages, _doneImages));
return;
}
#region Process Steps
var clone = new Bitmap(b.Width, b.Height, PixelFormat.Format32bppPArgb);
using (var gr = Graphics.FromImage(clone))
{
gr.DrawImage(b, new Rectangle(0, 0, clone.Width, clone.Height));
}
b.Dispose();
b = clone;
if (w.Options.Rotation != Rotation.Default || Options.EnableRotation)
{
b.RotateImage(w.Options.EnableRotation ? w.Options.Rotation : Options.Rotation);
}
if (Options.EnableResize || w.Options.EnableResize)
{
b = b.ResizeImage(w.Options.EnableResize ? w.Options.ResizeOptions : Options.ResizeOptions);
}
if (Options.EnableCrop || w.Options.EnableCrop)
{
b = b.CropImage(w.Options.EnableCrop ? w.Options.CropOptions : Options.CropOptions);
}
if (Options.EnableWatermark || w.Options.EnableWatermark)
{
b.WatermarkImage(w.Options.EnableWatermark ? w.Options.WatermarkOptions : Options.WatermarkOptions);
}
b = b.AdjustImage(w.Options.EnableAdjustments ? w.Options.AdjustmentOptions : Options.AdjustmentOptions);
#endregion
// Filename
var name = GenerateFilename(w, b);
// Output Path
var outpath = GenerateOutputPath(w, name, outFmt);
#region Select Encoder
var encoder = ImageFormat.Jpeg;
// Save
switch (outFmt)
{
case Format.Png:
encoder = ImageFormat.Png;
break;
case Format.Gif:
encoder = ImageFormat.Gif;
break;
case Format.Tiff:
encoder = ImageFormat.Tiff;
break;
case Format.Bmp:
encoder = ImageFormat.Bmp;
break;
}
#endregion
if (outFmt == Format.Jpg)
{
var myEncoderParameters = new EncoderParameters(1);
var myencoder = Encoder.Quality;
var myEncoderParameter = new EncoderParameter(myencoder, (long)(Options.OutputOptions.JpegQuality * 100));
myEncoderParameters.Param[0] = myEncoderParameter;
b.Save(outpath, StaticImageUtils.GetEncoder(encoder), myEncoderParameters);
}
else
{
b.Save(outpath, encoder);
}
b.Dispose();
outpath.Close();
}
Interlocked.Increment(ref _doneImages);
progress?.Report(new ModelProgressUpdate(_totalImages, _doneImages));
}
/// <summary>
/// 文字水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkText">水印文字</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="fontname">字体</param>
/// <param name="fontsize">字体大小</param>
public static void AddImageSignText(string imgPath, string filename, string watermarkText, int watermarkStatus, int quality, string fontname, int fontsize)
{
byte[] _ImageBytes = File.ReadAllBytes(HttpContext.Current.Server.MapPath(imgPath));
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
filename = HttpContext.Current.Server.MapPath(filename);
Graphics g = Graphics.FromImage(img);
Font drawFont = new Font(fontname, fontsize, FontStyle.Regular, GraphicsUnit.Pixel);
SizeF crSize;
crSize = g.MeasureString(watermarkText, drawFont);
float xpos = 0;
float ypos = 0;
switch (watermarkStatus)
{
case 1:
xpos = (float)img.Width * (float).01;
ypos = (float)img.Height * (float).01;
break;
case 2:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = (float)img.Height * (float).01;
break;
case 3:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = (float)img.Height * (float).01;
break;
case 4:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 5:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 6:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 7:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 8:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 9:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
}
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.White), xpos + 1, ypos + 1);
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.Black), xpos, ypos);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
ici = codec;
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
quality = 80;
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
img.Save(filename, ici, encoderParams);
else
img.Save(filename);
g.Dispose();
img.Dispose();
}
/// <summary>
/// 无损压缩图片
/// </summary>
/// <param name="src">原图片文件流</param>
/// <param name="dest">压缩后图片文件流</param>
/// <param name="flag">压缩质量（数字越小压缩率越高）1-100</param>
/// <param name="size">压缩后图片的最大大小</param>
/// <param name="sfsc">是否是第一次调用</param>
/// <returns></returns>
public static bool CompressImage(Stream src, Stream dest, int flag = 90, int size = 1024, bool sfsc = true)
{
//如果是第一次调用，原始图像的大小小于要压缩的大小，则直接复制文件，并且返回true
if (sfsc && src.Length < size * 1024)
{
src.CopyTo(dest);
return(true);
}
using (Image iSource = Image.FromStream(src))
{
ImageFormat tFormat = iSource.RawFormat;
int dHeight = iSource.Height;
int dWidth = iSource.Width;
int sW, sH;
//按比例缩放
Size temSize = new Size(iSource.Width, iSource.Height);
if (temSize.Width > dHeight || temSize.Width > dWidth)
{
if ((temSize.Width * dHeight) > (temSize.Width * dWidth))
{
sW = dWidth;
sH = (dWidth * temSize.Height) / temSize.Width;
}
else
{
sH = dHeight;
sW = (temSize.Width * dHeight) / temSize.Height;
}
}
else
{
sW = temSize.Width;
sH = temSize.Height;
}
using (Bitmap bmp = new Bitmap(dWidth, dHeight))
{
using (Graphics g = Graphics.FromImage(bmp))
{
g.Clear(Color.WhiteSmoke);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(iSource, new Rectangle((dWidth - sW) / 2, (dHeight - sH) / 2, sW, sH), 0, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);
}
//以下代码为保存图片时，设置压缩质量
using (EncoderParameters ep = new EncoderParameters())
{
long[] qy = new long[1];
qy[0] = flag;//设置压缩的比例1-100
using (EncoderParameter eParam = new EncoderParameter(Encoder.Quality, qy))
{
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayIci = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegIcIinfo = arrayIci.FirstOrDefault(t => t.FormatDescription.Equals("JPEG"));
if (jpegIcIinfo != null)
{
bmp.Save(dest, jpegIcIinfo, ep);//dFile是压缩后的新路径
if (dest.Length > 1024 * size)
{
flag = flag - 10;
CompressImage(src, dest, flag, size, false);
}
}
else
{
bmp.Save(dest, tFormat);
}
return(true);
}
catch
{
return(false);
}
}
}
}
}
}
/// <summary>
/// Overwrites the specified file on disk with a new version of the file rotated according
/// to the specified Orientation. Exceptions generated by an error writing the new file will
/// bubble up from this method.
///
/// Before the original file is overwritten, a copy is made in the temp files folder (so that
/// the original image isn't lost if the write of the rotated version fails). This temporary
/// copy is deleted before the method returns if the write of the new rotated image is successful.
/// </summary>
/// <param name="filename">The fully-specified name of the file to rotate. </param>
/// <param name="orientation">The orientation to apply to the rotated file. </param>
public static void RotateAndSaveImageFile(string filename, Orientation orientation)
{
if (orientation == Orientation.Initial)
{
//No rotation was specified, so no need to change anything.
return;
}
//Make a backup copy of the original image in the temp folder (so that if we hit a
//failure during writing of the new image, both the original and new copies of the
//image aren't gone).
string backupFilename = GetBackupFilename(filename);
System.IO.File.Copy(filename, backupFilename, true);
//Since our original image is dependant on the existing file on disk to be saved,
//we can't delete the original image file until the rotated image file is written.
//Get a temporary file that we'll use below to write the new image data.
string tempFilename = System.IO.Path.GetTempFileName();
//Load the image from the specified filename
using (FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read))
{
using (Image image = Image.FromStream(fileStream, true, false))
{
//Calculate the new value for the EXIF rotation property, and set it on the image. (This is
//calculated as the original EXIF rotation as read from the file, with the rotation performed
//in the app applied to that value. Thus if the original EXIF rotation tag was incorrect,
//and the user manually rotated the image to be upright, the tag will continue to be incorrect.)
PropertyItem rotationPropertyItem = image.GetPropertyItem(ROTATION_PROPERTY_ID);
Orientation originalOrientation = OrientationFromExifRotationPropertyValue(rotationPropertyItem.Value[0]);
Orientation newOrientation = (Orientation)((((int)originalOrientation) + ((int)orientation)) % 4);
int newExifRotationPropertyValue = ExifRotationPropertyValueFromOrientation(newOrientation);
rotationPropertyItem.Value[0] = (byte)newExifRotationPropertyValue;
image.SetPropertyItem(rotationPropertyItem);
//Setup the EncoderParameters with the information that we will be performing when
//saving the rotated file.
EncoderParameters encoderParams = new EncoderParameters(1);
EncoderValue rotationEncoderValue = EncoderValueFromOrientation(orientation);
EncoderParameter rotationParam = new EncoderParameter(Encoder.Transformation, (long)rotationEncoderValue);
encoderParams.Param[0] = rotationParam;
//Setup the .jpg ImageCodecInfo that we need to save the rotated file.
ImageCodecInfo jpegCodecInfo = GetEncoderInfo("image/jpeg");
using (FileStream outFileStream = new FileStream(tempFilename, FileMode.Open, FileAccess.Write))
{
image.Save(outFileStream, jpegCodecInfo, encoderParams);
}
}
}
//Delete the original image (making room for us to rename the new, rotated copy).
System.IO.File.Delete(filename);
try
{
//Now, move the rotated image that we saved out as a temporary file to the name and
//location of the original file.
File.Move(tempFilename, filename);
}
catch
{
//An error occurred moving the rotated file. Try and retore the original file from
//the copy that we saved in the temp folder, so that the file isn't just "gone" as
//far as the user can tell.
File.Move(backupFilename, filename);
//Let the exception bubble up -- an error dialog will be displayed to the user.
throw;
}
//Since we got to this point without an exception being thrown, the write of the new
//file was apparently successful. Delete the copy of the original file that we made
//in the temp folder.
System.IO.File.Delete(backupFilename);
}
static void rebdqulity_pic(string szdir, long lqulity)
{
int i = 0;
Bitmap myBitmap;
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/jpeg");
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, lqulity);
myEncoderParameters.Param[0] = myEncoderParameter;
string szsavedir = Directory.CreateDirectory(szdir + "\\icon").FullName.ToString();
string[] szfiles = Directory.GetFiles(szdir, "*.jpg");
foreach (string szfile in szfiles)
{
myBitmap = new Bitmap(szfile);
myBitmap.Save(szsavedir + @"\quli" + i.ToString() + ".jpg", myImageCodecInfo, myEncoderParameters);
i++;
}
}
public static void Compressimage(Stream sourcePath, string targetPath, String filename)
{
try
{
using (var image = Image.FromStream(sourcePath))
{
float maxHeight = 900.0f;
float maxWidth = 900.0f;
int newWidth;
int newHeight;
string extension;
Bitmap originalBMP = new Bitmap(sourcePath);
int originalWidth = originalBMP.Width;
int originalHeight = originalBMP.Height;
if (originalWidth > maxWidth || originalHeight > maxHeight)
{
// To preserve the aspect ratio
float ratioX = (float)maxWidth / (float)originalWidth;
float ratioY = (float)maxHeight / (float)originalHeight;
float ratio = Math.Min(ratioX, ratioY);
newWidth = (int)(originalWidth * ratio);
newHeight = (int)(originalHeight * ratio);
}
else
{
newWidth = (int)originalWidth;
newHeight = (int)originalHeight;
}
Bitmap bitMAP1 = new Bitmap(originalBMP, newWidth, newHeight);
Graphics imgGraph = Graphics.FromImage(bitMAP1);
extension = Path.GetExtension(targetPath);
if (extension == ".png" || extension == ".gif")
{
imgGraph.SmoothingMode = SmoothingMode.AntiAlias;
imgGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
imgGraph.DrawImage(originalBMP, 0, 0, newWidth, newHeight);
bitMAP1.Save(targetPath, image.RawFormat);
bitMAP1.Dispose();
imgGraph.Dispose();
originalBMP.Dispose();
}
else if (extension == ".jpg")
{
imgGraph.SmoothingMode = SmoothingMode.AntiAlias;
imgGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
imgGraph.DrawImage(originalBMP, 0, 0, newWidth, newHeight);
ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
Encoder myEncoder = Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 50L);
myEncoderParameters.Param[0] = myEncoderParameter;
bitMAP1.Save(targetPath, jpgEncoder, myEncoderParameters);
bitMAP1.Dispose();
imgGraph.Dispose();
originalBMP.Dispose();
}
}
}
catch (Exception)
{
throw;
}
}
private void saveImageExistingMultiplePage(Image[] bmp, Image origionalFile, string type, int PageNumber, string location)
{
try
{
//Now load the Codecs
ImageCodecInfo codecInfo = getCodecForstring(type);
Encoder saveEncoder;
Encoder compressionEncoder;
EncoderParameter SaveEncodeParam;
EncoderParameter CompressionEncodeParam;
EncoderParameters EncoderParams = new EncoderParameters(2);
Bitmap pages;
Bitmap NextPage;
saveEncoder = Encoder.SaveFlag;
compressionEncoder = Encoder.Compression;
origionalFile.SelectActiveFrame(FrameDimension.Page, 0);
pages = new Bitmap(origionalFile);
pages = ConvertToBitonal(pages);
// Save the first page (frame).
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.MultiFrame);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParams.Param[0] = CompressionEncodeParam;
EncoderParams.Param[1] = SaveEncodeParam;
pages.Save(location, codecInfo, EncoderParams);
for (int i = 1; i < PageNumber; i++)
{
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.FrameDimensionPage);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParams.Param[0] = CompressionEncodeParam;
EncoderParams.Param[1] = SaveEncodeParam;
origionalFile.SelectActiveFrame(FrameDimension.Page, i);
NextPage = new Bitmap(origionalFile);
NextPage = ConvertToBitonal(NextPage);
pages.SaveAdd(NextPage, EncoderParams);
}
for (int i = 0; i < bmp.Length; i++)
{
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.FrameDimensionPage);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionCCITT4);
EncoderParams.Param[0] = CompressionEncodeParam;
EncoderParams.Param[1] = SaveEncodeParam;
bmp[i] = (Bitmap)ConvertToBitonal((Bitmap)bmp[i]);
pages.SaveAdd(bmp[i], EncoderParams);
}
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.Flush);
EncoderParams.Param[0] = SaveEncodeParam;
pages.SaveAdd(EncoderParams);
}
catch (System.Exception ee)
{
throw ee;
}
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
double proporcao;
int w, h, xCrop, yCrop;
string imgName = Request.QueryString["img"];
byte crop = Convert.ToByte(Request.QueryString["c"]);
string colorName = Request.QueryString["b"];
int interpolationMode = Convert.ToInt16(Request.QueryString["i"]);
//Precisão do redimensionamento
int p = Convert.ToInt32(Request.QueryString["p"]);
int widthT = Convert.ToInt32(Request.QueryString["w"]);
int heightT = Convert.ToInt32(Request.QueryString["h"]);
//Nome da imagem a ser cacheada ou comparada
string strImg = imgName.Substring(0, imgName.LastIndexOf('.')) + "_" + widthT + "x" + heightT + "_" + crop.ToString() + (string.IsNullOrEmpty(colorName) ? "" : "_" + colorName) + "_" + interpolationMode + "_" + p + imgName.Substring(imgName.LastIndexOf('.'));
//Path com as imagens "cacheadas"
string cachePath = Path.Combine(Server.MapPath("~/Arquivos/ThumbCache/"), strImg);
//Dados da última
DateTime dataModCache = File.GetLastWriteTime(Server.MapPath(imgName));
DateTime dataModImg = File.GetLastWriteTime(cachePath);
int comparacao = DateTime.Compare(dataModCache, dataModImg);
//Se o arquivo já existe no cache
if (File.Exists(cachePath) && comparacao <= 0)
{
OutputCacheResponse(HttpContext.Current, File.GetLastWriteTime(cachePath));
HttpContext.Current.Response.WriteFile(cachePath);
return;
}
else
{
//Cria diretório com as imagens (parâmetro)
Directory.CreateDirectory(Path.GetDirectoryName(cachePath));
//Deleta se já existe imagem cacheada
if (File.Exists(cachePath))
{
File.Delete(cachePath);
}
//Cria o "bitmap" com imagem original
string imgPath = HttpContext.Current.Request.MapPath("~/" + imgName);
Bitmap bmp = new Bitmap(imgPath);
ImageFormat formato = bmp.RawFormat;
double widthO = bmp.Size.Width;
double heightO = bmp.Size.Height;
//Caso só largura ou altura sejam transmitidas
if (widthT == 0 || heightT == 0)
{
//Cálculo com base na largura (widthT)
if (widthT > 0)
{
heightO = widthT / (widthO / heightO);
widthO = widthT;
heightT = Convert.ToInt32(heightO);
//Cálculo com base na altura (heightT)
}
else
{
widthO = heightT / (heightO / widthO);
heightO = heightT;
widthT = Convert.ToInt32(widthO);
}
}
else
{
//Caso opção seja "CROPAR"
if (crop == 1)
{
//Se uma das medidas originais forem MAIORES que o "Target"
if (widthO > widthT || heightO > heightT)
{
proporcao = widthO / heightO;
while (widthO > widthT || heightO > heightT)
{
widthO--;
heightO = widthO / proporcao;
if (widthO <= widthT && heightO <= heightT)
{
break;
}
}
}
//Se uma das medidas originais forem MENORES que o "Target"
if (widthO < widthT || heightO < heightT)
{
proporcao = widthO / heightO;
while (widthO < widthT || heightO < heightT)
{
widthO++;
heightO = widthO / proporcao;
if (widthO >= widthT && heightO >= heightT)
{
break;
}
}
}
}
else
{
//Se uma das medidas originais forem MAIORES que o "Target"
if (widthO > widthT || heightO > heightT)
{
proporcao = widthO / heightO;
while (widthO > widthT || heightO > heightT)
{
widthO--;
heightO = widthO / proporcao;
if (widthO <= widthT && heightO <= heightT)
{
break;
}
}
}
else
{
//Se uma das medidas originais forem MENORES que o "Target"
if (widthO < widthT || heightO < heightT)
{
proporcao = widthO / heightO;
while (widthO < widthT && heightO < heightT)
{
widthO++;
heightO = widthO / proporcao;
if (widthO >= widthT && heightO >= heightT)
{
break;
}
}
}
}
}
}
//Medidas finais (incluindo valor de precisão)
w = Convert.ToInt32(widthO) + p;
h = Convert.ToInt32(heightO) + p;
//Calcula as coordenadas para corte
xCrop = Convert.ToInt32((w - widthT) / 2);
yCrop = Convert.ToInt32((h - heightT) / 2);
Bitmap bmpT = new Bitmap(widthT, heightT);
EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, 95L);
//Image codec
ImageCodecInfo imgCodec = ImageCodecInfo.GetImageEncoders().FirstOrDefault(a => a.FormatID == formato.Guid);
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
//Cor de fundo
Color bg = Color.White;
//Caso a cor não seja transmitida
if (string.IsNullOrEmpty(colorName))
{
//se PNG "transparent"
if (formato.Equals(ImageFormat.Png) || formato.Equals(ImageFormat.Gif))
{
bg = Color.Transparent;
}
}
else
{
try
{
//Html color (hex)
bg = ColorTranslator.FromHtml("#" + colorName);
}
catch (Exception)
{
//Html color
bg = ColorTranslator.FromHtml(colorName);
}
}
//Manipula e salva em cache
using (Graphics g = Graphics.FromImage(bmpT))
{
g.CompositingQuality = CompositingQuality.HighSpeed;
g.InterpolationMode = interpolationMode == 0 ? InterpolationMode.HighQualityBicubic : InterpolationMode.HighQualityBilinear;
g.CompositingMode = CompositingMode.SourceCopy;
g.Clear(bg);
g.DrawImage(bmp, -xCrop, -yCrop, w, h);
using (MemoryStream memoryStream = new MemoryStream())
{
bmpT.Save(memoryStream, imgCodec, encoderParams);
OutputCacheResponse(HttpContext.Current, File.GetLastWriteTime(imgPath));
using (FileStream diskCacheStream = new FileStream(cachePath, FileMode.CreateNew))
{
memoryStream.WriteTo(diskCacheStream);
}
memoryStream.WriteTo(HttpContext.Current.Response.OutputStream);
}
}
bmp.Dispose();
bmpT.Dispose();
}
}
catch (Exception ex)
{
Font font = new Font("verdana", 12);
Bitmap bmp = new Bitmap(ex.Message.Length * 10, 50);
Graphics g = Graphics.FromImage(bmp);
g.DrawString(ex.Message.Replace("'", ""), font, new SolidBrush(Color.White), new PointF(5.0F, 5.0F));
bmp.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
bmp.Dispose();
}
}
public MyEncoder()
{
System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameter myEncoderParameter = new EncoderParameter(encoder, 15L);
myEncoderParameters.Param[0] = myEncoderParameter;
}
/// <summary>
/// 加图片水印
/// </summary>
/// <param name="imgPath">原图文件名物理路径</param>
/// <param name="filename">生成文件名物理路径</param>
/// <param name="watermarkFilename">水印文件名物理路径</param>
/// <param name="positon">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 ... 9=右下</param>
/// <param name="quality">附加图片质量，0--100之间，值大质量高</param>
/// <param name="watermarkTransparency">水印的透明度 1--100 100为不透明</param>
public static bool AddImageSignPic(string imgPath, string filename, string watermarkFilename, Enums.Position positon, int quality, int watermarkTransparency, int minWidth, int minHeight)
{
using (Bitmap img = new Bitmap(imgPath))
{
Graphics g ;
//如果原图片是索引像素格式之列的，则需要转换
if (IsPixelFormatIndexed(img.PixelFormat))
{
using (Bitmap bmp = new Bitmap(img.Width, img.Height, PixelFormat.Format32bppArgb))
{
g = Graphics.FromImage(bmp);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(img, 0, 0);
}
}
else
{
g = Graphics.FromImage(img);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
}
int watermarkStatus = (int)positon;
using (System.Drawing.Image watermark = new Bitmap(watermarkFilename))
{
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
{
return false;
}
if (img.Width < minWidth || img.Height < minHeight)
{
return false;
}
using (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 transparency = 0.5F;
if (watermarkTransparency >= 1 && watermarkTransparency <= 100)
{
transparency = (watermarkTransparency / 100.0F);
}
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, transparency, 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;
switch (watermarkStatus)
{
case 1:
xpos = (int)(img.Width * (float).01);
ypos = (int)(img.Height * (float).01);
break;
case 2:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)(img.Height * (float).01);
break;
case 3:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)(img.Height * (float).01);
break;
case 4:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 5:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 6:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).50) - (watermark.Height / 2));
break;
case 7:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 8:
xpos = (int)((img.Width * (float).50) - (watermark.Width / 2));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
case 9:
xpos = (int)((img.Width * (float).99) - (watermark.Width));
ypos = (int)((img.Height * (float).99) - watermark.Height);
break;
}
g.DrawImage(watermark, new Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.ToLower().IndexOf("jpeg") > -1 || codec.MimeType.ToLower().IndexOf("jpg") > -1)
{
ici = codec;
}
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
watermark.Dispose();
imageAttributes.Dispose();
}
}
}
return true;
}
private void compress(System.Drawing.Image img, string path, string Extension)
{
try
{
EncoderParameter qualityParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 60L);
ImageCodecInfo jpegCodec = null;
if (Extension == ".jpeg")
{
jpegCodec = GetEncoderInfo("image/jpeg");
}
if (Extension == ".bmp")
{
jpegCodec = GetEncoderInfo("image/bmp");
}
if (Extension == ".gif")
{
jpegCodec = GetEncoderInfo("image/gif");
}
if (Extension == ".png")
{
jpegCodec = GetEncoderInfo("image/png");
}
if (Extension == ".jpg")
{
jpegCodec = GetEncoderInfo("image/jpeg");
}
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
img.Save(path, jpegCodec, encoderParams);
}
catch (Exception ex)
{
throw ex;
}
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
int Width = Convert.ToInt32(Request["Width"]);
int Height = Convert.ToInt32(Request["Height"]);
double Lg_Full_Degree = Convert.ToDouble(Request["Lg_Full_Degrees"]);
double[] Planet_Full_Degree = new double[16] {
Convert.ToDouble(Request["Su_Full_Degrees"]), Convert.ToDouble(Request["Mo_Full_Degrees"]), Convert.ToDouble(Request["Ma_Full_Degrees"]), Convert.ToDouble(Request["Me_Full_Degrees"]), Convert.ToDouble(Request["Ju_Full_Degrees"]), Convert.ToDouble(Request["Ve_Full_Degrees"]), Convert.ToDouble(Request["Sa_Full_Degrees"]), Convert.ToDouble(Request["Ra_Full_Degrees"]), Convert.ToDouble(Request["Ke_Full_Degrees"]), Convert.ToDouble(Request["Ur_Full_Degrees"]), Convert.ToDouble(Request["Ne_Full_Degrees"]), Convert.ToDouble(Request["Pl_Full_Degrees"]), Convert.ToDouble(Request["Ch_Full_Degrees"]), Convert.ToDouble(Request["X_Full_Degrees"]), Convert.ToDouble(Request["Y_Full_Degrees"]), Convert.ToDouble(Request["Z_Full_Degrees"])
};
int[] Planet_Retro = new int[16] {
0, 0, Convert.ToInt32(Request["Ma_Retro"]), Convert.ToInt32(Request["Me_Retro"]), Convert.ToInt32(Request["Ju_Retro"]), Convert.ToInt32(Request["Ve_Retro"]), Convert.ToInt32(Request["Sa_Retro"]), 0, 0, Convert.ToInt32(Request["Ur_Retro"]), Convert.ToInt32(Request["Ne_Retro"]), Convert.ToInt32(Request["Pl_Retro"]), 0, 0, 0, 0
};
double birthTimeZone = Convert.ToDouble(Request["birthTimeZone"]);
int birthDST = Convert.ToInt32(Request["birthDST"]);
double birthJulDay = Convert.ToDouble(Request["birthJulDay"]);
string Name = Request["Name"];
//////////////////////////////////////
int Lg_Sign = (int)Lg_Full_Degree / 30 + 1;
if (Lg_Sign > 12)
{
Lg_Sign -= 12;
}
double Lg_Degrees = (Lg_Full_Degree / 30 - (int)Lg_Full_Degree / 30) * 30;
int[] Planet_Signs = new int[16];
double[] Planet_Degrees = new double[16];
int i = 0;
for (i = 0; i < 16; i++)
{
Planet_Signs[i] = (int)Planet_Full_Degree[i] / 30 + 1;
if (Planet_Signs[i] > 12)
{
Planet_Signs[i] -= 12;
}
Planet_Degrees[i] = (Planet_Full_Degree[i] / 30 - (int)Planet_Full_Degree[i] / 30) * 30;
}
//////////////////////////////////////
// Set the page's content type to JPEG files
// and clear all response headers.
Response.ContentType = "image/jpeg";
Response.Clear();
// Buffer response so that page is sent
// after processing is complete.
Response.BufferOutput = true;
Bitmap objBitmap = new Bitmap(Width, Height);
Graphics objGraphics = Graphics.FromImage(objBitmap);
objGraphics.SmoothingMode = SmoothingMode.AntiAlias;
objGraphics.CompositingQuality = CompositingQuality.HighQuality;
objGraphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
objGraphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
objGraphics.Clear(Color.FromArgb(185, 208, 61));
RectangleF chartRect = new RectangleF();
float x1 = 0;
float y1 = 0;
float width = Width / 2 - 30;
float height = Width / 2 - 30;
/****************************Planetary Details*******************************************/
x1 = 20;
y1 = 40;
height = Height - Width / 2 - 50;
chartRect = new RectangleF(x1, y1, width, height);
Functions.Draw_Table_Planetary_Details(objGraphics, chartRect, Planet_Degrees, Planet_Signs, Lg_Degrees, Lg_Sign, Planet_Retro);
/***************************North Indian**********************************************/
y1 = height + 60;
height = Width / 2 - 30;
chartRect = new RectangleF(x1, y1, width, height);
Functions.DrawChart_North(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Degrees, birthJulDay);
/***************************RoundChart**********************************************/
x1 = Width / 2 + 10;
chartRect = new RectangleF(x1, y1, width, height);
Functions.DrawChart_Round(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Degrees, birthJulDay);
/***************************Table Combination********************************************/
y1 = 40;
height = Height - Width - 40;
chartRect = new RectangleF(x1, y1, width, height);
Functions.Draw_Table_Combination(objGraphics, chartRect, Planet_Signs[0], Planet_Signs[1], Planet_Signs[3]);
/*****************************South Indian***********************************************/
y1 = y1 + height + 20;
height = Width / 2 - 30;
chartRect = new RectangleF(x1, y1, width, height);
Functions.DrawChart_South(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Degrees, birthJulDay);
/*****************************South Indian***********************************************/
//float x1 = 20;
//float y1 = 20;
//float width = Width / 2 - 30;
//float height = Width / 2 - 30;
//chartRect = new RectangleF(x1, y1, width, height);
//Functions.DrawChart_South(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Retro, Planet_Degrees);
///***************************North Indian**********************************************/
//x1 = Width / 2 + 10;
//chartRect = new RectangleF(x1, y1, width, height);
//Functions.DrawChart_North(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Retro, Planet_Degrees);
///***************************RoundChart**********************************************/
//y1 = Width / 2 + 10;
//chartRect = new RectangleF(x1, y1, width, height);
//Functions.DrawChart_Round(objGraphics, chartRect, Lg_Sign, Planet_Signs, Planet_Retro, Planet_Degrees);
///***************************Table Combination********************************************/
//y1 = Width + 10;
//height = Height - Width - 30;
//chartRect = new RectangleF(x1, y1, width, height);
//Functions.Draw_Table_Combination(objGraphics, chartRect, Planet_Signs[0], Planet_Signs[1], Planet_Signs[3]);
///****************************Planetary Details*******************************************/
//x1 = 20;
//y1 = Width / 2 + 10;
//height = Height - Width/2 - 30;
//chartRect = new RectangleF(x1, y1, width, height);
//Functions.Draw_Table_Planetary_Details(objGraphics, chartRect, Planet_Degrees, Planet_Signs, Lg_Degrees, Lg_Sign, Planet_Full_Degree, Lg_Full_Degree);
///////////////////////////////////////////////////////////////////////////////////
SolidBrush fontBrush = new SolidBrush(Color.Black);
StringFormat centerFormat = new StringFormat();
centerFormat.Trimming = StringTrimming.None;
centerFormat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.NoClip;
centerFormat.LineAlignment = StringAlignment.Center;
centerFormat.Alignment = StringAlignment.Center;
Font headFont = new Font("Times New Roman", 14, FontStyle.Bold);
objGraphics.DrawString(Name, headFont, fontBrush, new RectangleF(0, 0, Width, 40), centerFormat);
Font textFont = new Font("Verdana", 8);
fontBrush.Color = Color.Firebrick;
objGraphics.DrawString("© greenstonelobo.com", textFont, fontBrush, new RectangleF(Width / 2 + 10, Height - 15, Width / 2 - 30, 15), centerFormat);
EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, 100L);
ImageCodecInfo jpegCodec = Functions.GetEncoderInfo("image/jpeg");
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
objBitmap.Save(Response.OutputStream, jpegCodec, encoderParams);
objGraphics.Dispose();
objBitmap.Dispose();
// Send the output to the client.
Response.Flush();
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
public static void ProcessImage(Stream istm, Stream ostm, ProcessImageSettings s)
{
using (var img = Image.FromStream(istm, true, false))
{
if (s.FrameIndex > 0)
{
var fd = img.RawFormat.Guid == ImageFormat.Gif.Guid ? FrameDimension.Time : FrameDimension.Page;
if (img.GetFrameCount(fd) > s.FrameIndex)
{
img.SelectActiveFrame(fd, s.FrameIndex);
}
else
{
throw new ArgumentOutOfRangeException("Invalid Frame Index");
}
}
img.ExifRotate();
s = s.Clone();
s.Fixup(img.Width, img.Height);
bool alpha = ((ImageFlags)img.Flags & ImageFlags.HasAlpha) == ImageFlags.HasAlpha;
var src = img;
var crop = s.Crop;
if (s.HybridScaleRatio > 1d)
{
int intw = (int)Math.Ceiling(img.Width / s.HybridScaleRatio);
int inth = (int)Math.Ceiling(img.Height / s.HybridScaleRatio);
var bmp = new Bitmap(intw, inth);
using (var gfx = Graphics.FromImage(bmp))
{
gfx.PixelOffsetMode = PixelOffsetMode.Half;
gfx.CompositingMode = CompositingMode.SourceCopy;
gfx.DrawImage(img, Rectangle.FromLTRB(0, 0, intw, inth), crop.X, crop.Y, crop.Width, crop.Height, GraphicsUnit.Pixel);
}
img.Dispose();
src = bmp;
crop = new Rectangle(0, 0, intw, inth);
}
using (src)
using (var iat = new ImageAttributes())
using (var bmp = new Bitmap(s.Width, s.Height, alpha ? GdiPixelFormat.Format32bppArgb : GdiPixelFormat.Format24bppRgb))
using (var gfx = Graphics.FromImage(bmp))
{
iat.SetWrapMode(WrapMode.TileFlipXY);
gfx.PixelOffsetMode = PixelOffsetMode.Half;
gfx.CompositingMode = CompositingMode.SourceCopy;
gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
if (alpha && !s.MatteColor.IsEmpty)
{
gfx.Clear(s.MatteColor);
gfx.CompositingMode = CompositingMode.SourceOver;
gfx.CompositingQuality = CompositingQuality.GammaCorrected;
}
gfx.DrawImage(src, Rectangle.FromLTRB(0, 0, s.Width, s.Height), crop.X, crop.Y, crop.Width, crop.Height, GraphicsUnit.Pixel, iat);
switch (s.SaveFormat)
{
case FileFormat.Bmp:
bmp.Save(ostm, ImageFormat.Bmp);
break;
case FileFormat.Tiff:
using (var encoderParams = new EncoderParameters(1))
using (var param = new EncoderParameter(Encoder.Compression, (long)EncoderValue.CompressionNone))
{
encoderParams.Param[0] = param;
bmp.Save(ostm, tiffCodec, encoderParams);
}
break;
case FileFormat.Jpeg:
using (var encoderParams = new EncoderParameters(1))
using (var param = new EncoderParameter(Encoder.Quality, s.JpegQuality))
{
encoderParams.Param[0] = param;
bmp.Save(ostm, jpegCodec, encoderParams);
}
break;
default:
if (s.IndexedColor)
{
bmp.Save(ostm, ImageFormat.Gif);
}
else
{
bmp.Save(ostm, ImageFormat.Png);
}
break;
}
}
}
}
internal static void Resize(string srcpath, string dstpath, string filename, int width, int height)
{
if (Path.GetFileName(filename) != filename)
{
throw new InvalidOperationException("'filename' is invalid!");
}
string combined_src = Path.Combine(srcpath, filename);
string filename_only = Path.GetFileNameWithoutExtension(filename);
string combined_dst = Path.Combine(dstpath, filename_only + ".jpeg");
using (Tiff image = Tiff.Open(combined_src, "r"))
{
if (image == null)
{
throw new InvalidOperationException("TIFF File not found");
}
//FieldValue[] exifIFDTag = image.GetField(TiffTag.EXIFIFD);
//if (exifIFDTag == null)
//{
// throw new InvalidOperationException("Exif metadata not found");
//}
//int exifIFDOffset = exifIFDTag[0].ToInt();
//if (!image.ReadEXIFDirectory(exifIFDOffset))
//{
// throw new InvalidOperationException("Could not read EXIF IFD");
//}
//image.SetDirectory(0);
FieldValue[] value = image.GetField(TiffTag.IMAGEDESCRIPTION);
value = image.GetField(TiffTag.IMAGEWIDTH);
int _width = value[0].ToInt();
value = image.GetField(TiffTag.IMAGELENGTH);
int _height = value[0].ToInt();
// Read the image into the memory buffer
int[] raster = new int[_height * _width];
if (!image.ReadRGBAImage(_width, _height, raster))
{
throw new InvalidOperationException("Could not read Image");
}
using (Bitmap bmp = new Bitmap(_width, _height, PixelFormat.Format24bppRgb))
{
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData bmpdata = bmp.LockBits(rect, ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
byte[] bits = new byte[bmpdata.Stride * bmpdata.Height];
for (int y = 0; y < bmp.Height; y++)
{
int rasterOffset = y * bmp.Width;
int bitsOffset = (bmp.Height - y - 1) * bmpdata.Stride;
for (int x = 0; x < bmp.Width; x++)
{
int rgba = raster[rasterOffset++];
bits[bitsOffset++] = (byte)((rgba >> 16) & 0xff);
bits[bitsOffset++] = (byte)((rgba >> 8) & 0xff);
bits[bitsOffset++] = (byte)(rgba & 0xff);
}
}
System.Runtime.InteropServices.Marshal.Copy(bits, 0, bmpdata.Scan0, bits.Length);
bmp.UnlockBits(bmpdata);
int newWidth, newHeight;
if (bmp.Width > bmp.Height)
{
newWidth = width;
newHeight = (int)(height * bmp.Height / bmp.Width);
}
else
{
newHeight = height;
newWidth = (int)(width * bmp.Width / bmp.Height);
}
Rectangle destRect = new Rectangle(0, 0, newWidth, newHeight);
Bitmap destImage = new Bitmap(newWidth, newHeight);
destImage.SetResolution(bmp.HorizontalResolution, bmp.VerticalResolution);
using (var graphics = Graphics.FromImage(destImage))
{
graphics.CompositingMode = CompositingMode.SourceCopy;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
using (var wrapMode = new ImageAttributes())
{
wrapMode.SetWrapMode(WrapMode.TileFlipXY);
graphics.DrawImage(bmp, destRect, 0, 0, bmp.Width, bmp.Height, GraphicsUnit.Pixel, wrapMode);
}
}
EncoderParameters myEncoderParameters = new EncoderParameters(1);
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 90L);
myEncoderParameters.Param[0] = myEncoderParameter;
destImage.Save(combined_dst, GetEncoder(ImageFormat.Jpeg), myEncoderParameters);
}
}
}
/// <summary>
/// 文字水印
/// </summary>
/// <param name="imgPath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkText">水印文字</param>
/// <param name="watermarkStatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="fontname">字体</param>
/// <param name="fontsize">字体大小</param>
public static void AddImageSignText(string imgPath, string filename, string watermarkText, int watermarkStatus, int quality, string fontname, int fontsize)
{
byte[] _ImageBytes = File.ReadAllBytes(GetMapPath(imgPath));
Image img = Image.FromStream(new System.IO.MemoryStream(_ImageBytes));
filename = GetMapPath(filename);
Graphics g = Graphics.FromImage(img);
Font drawFont = new Font(fontname, fontsize, FontStyle.Regular, GraphicsUnit.Pixel);
SizeF crSize;
crSize = g.MeasureString(watermarkText, drawFont);
float xpos = 0;
float ypos = 0;
switch (watermarkStatus)
{
case 1:
xpos = (float)img.Width * (float).01;
ypos = (float)img.Height * (float).01;
break;
case 2:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = (float)img.Height * (float).01;
break;
case 3:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = (float)img.Height * (float).01;
break;
case 4:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 5:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 6:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).50) - (crSize.Height / 2);
break;
case 7:
xpos = (float)img.Width * (float).01;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 8:
xpos = ((float)img.Width * (float).50) - (crSize.Width / 2);
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
case 9:
xpos = ((float)img.Width * (float).99) - crSize.Width;
ypos = ((float)img.Height * (float).99) - crSize.Height;
break;
}
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.White), xpos + 1, ypos + 1);
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.Black), xpos, ypos);
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
{
ici = codec;
}
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
}
protected byte[] ProcessProfilePicture(byte[] bytes)
{
Bitmap image;
using (System.IO.MemoryStream m = new System.IO.MemoryStream(bytes))
{
image = new Bitmap(Image.FromStream(m));
}
if (image != null)
{
int size = 640;
if (size > image.Width)
{
size = image.Width;
}
if (size > image.Height)
{
size = image.Height;
}
int newHeight = 0;
int newWidth = 0;
float imgWidth = float.Parse(image.Width.ToString());
float imgHeight = float.Parse(image.Height.ToString());
if (image.Width < image.Height)
{
newHeight = (int)((imgHeight / imgWidth) * size);
newWidth = size;
}
else
{
newWidth = (int)((imgWidth / imgHeight) * size);
newHeight = size;
}
Bitmap newImage = new Bitmap(newWidth, newHeight);
using (Graphics gr = Graphics.FromImage(newImage))
{
gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
gr.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
gr.DrawImage(image, new Rectangle(0, 0, newWidth, newHeight));
}
//crop square
Bitmap dest = newImage.Clone(new Rectangle(
new Point(0, 0),
new Size(size, size)
), image.PixelFormat);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
System.Drawing.Imaging.Encoder enc = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters encParams = new EncoderParameters(1);
EncoderParameter param = new EncoderParameter(enc, 50L);
encParams.Param[0] = param;
dest.Save(ms, GetEncoder(ImageFormat.Jpeg), encParams);
ms.Close();
return(ms.ToArray());
}
return(bytes);
}
public bool SaveMultipage(List <ScannedImage> images, string location, Func <int, bool> progressCallback)
{
try
{
ImageCodecInfo codecInfo = GetCodecForString("TIFF");
if (!progressCallback(0))
{
return(false);
}
PathHelper.EnsureParentDirExists(location);
if (images.Count == 1)
{
var iparams = new EncoderParameters(1);
Encoder iparam = Encoder.Compression;
var iparamPara = new EncoderParameter(iparam, (long)(EncoderValue.CompressionLZW));
iparams.Param[0] = iparamPara;
using (var bitmap = scannedImageRenderer.Render(images[0]))
{
bitmap.Save(location, codecInfo, iparams);
}
}
else if (images.Count > 1)
{
Encoder saveEncoder;
Encoder compressionEncoder;
EncoderParameter SaveEncodeParam;
EncoderParameter CompressionEncodeParam;
var encoderParams = new EncoderParameters(2);
saveEncoder = Encoder.SaveFlag;
compressionEncoder = Encoder.Compression;
// Save the first page (frame).
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.MultiFrame);
CompressionEncodeParam = new EncoderParameter(compressionEncoder, (long)EncoderValue.CompressionLZW);
encoderParams.Param[0] = CompressionEncodeParam;
encoderParams.Param[1] = SaveEncodeParam;
File.Delete(location);
using (var bitmap0 = scannedImageRenderer.Render(images[0]))
{
bitmap0.Save(location, codecInfo, encoderParams);
for (int i = 1; i < images.Count; i++)
{
if (images[i] == null)
{
break;
}
if (!progressCallback(i))
{
bitmap0.Dispose();
File.Delete(location);
return(false);
}
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.FrameDimensionPage);
CompressionEncodeParam = new EncoderParameter(compressionEncoder,
(long)EncoderValue.CompressionLZW);
encoderParams.Param[0] = CompressionEncodeParam;
encoderParams.Param[1] = SaveEncodeParam;
using (var bitmap = scannedImageRenderer.Render(images[i]))
{
bitmap0.SaveAdd(bitmap, encoderParams);
}
}
SaveEncodeParam = new EncoderParameter(saveEncoder, (long)EncoderValue.Flush);
encoderParams.Param[0] = SaveEncodeParam;
bitmap0.SaveAdd(encoderParams);
}
}
return(true);
}
catch (Exception ex)
{
throw new Exception("Error saving TIFF", ex);
}
}
/// <summary>
/// 上传图片并生成略缩图
/// </summary>
/// <param name="files">FileUpload控件</param>
/// <returns></returns>
public static void ImageUpLoad(FileUpload files, Int32 ThumbnailWidth, Int32 ThumbnailHeight, ref string picpath, ref string smallpicpath)
{
//System.Drawing.Image xImage;
System.Drawing.Bitmap xBitmap;
int PhotoHeight, PhotoWidth;
//Rectangle NewPhoto;
System.Drawing.Imaging.ImageFormat xObject;
string smallFileName = "";
string smallSaveFile = "";
picpath = "";
smallpicpath = "";
if (files.FileName != "")
{
string ext = EKFileUpload.getExtend(files.FileName);
ext = ext.ToLower();
if (ext == "gif" || ext == "jpg" || ext == "jpeg" || ext == "bmp" || ext == "png")
{
long FLength = files.PostedFile.ContentLength / 1024;
if (FLength > MS_ConfigBLL.UploadSize)
{
EKMessageBox.Show("文件上传失败！因为上传的文件超过了" + MS_ConfigBLL.UploadSize + "KB！");
}
else
{
string createfilename = EKFileUpload.createFileName();
string FileName = "/" + MS_ConfigBLL.UploadPath + "/" + EKFileUpload.getMyPath() + createfilename + "." + ext;
string SaveFile = EKFileUpload.FilePath + FileName;
EKFileUpload.doCreatrDir(SaveFile);
files.SaveAs(SaveFile);
picpath = FileName;
smallFileName = "/" + MS_ConfigBLL.UploadPath + "/" + EKFileUpload.getMyPath() + "small" + createfilename + "." + ext;
smallSaveFile = EKFileUpload.FilePath + smallFileName;
switch (ext)
{
case ".gif":
xObject = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ".bmp":
xObject = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ".png":
xObject = System.Drawing.Imaging.ImageFormat.Png;
break;
default:
xObject = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
}
xBitmap = new Bitmap(SaveFile);//------------------
PhotoHeight = xBitmap.Height;
PhotoWidth = xBitmap.Width;
Int32 TempHeight = 0;
Int32 TempWidth = 0;
if (PhotoWidth <= ThumbnailWidth && PhotoHeight <= ThumbnailHeight)
{
EKFileUpload.doCreatrDir(smallSaveFile);
xBitmap.Save(smallSaveFile);
}
else
{
if (PhotoWidth > ThumbnailWidth)//图片宽度大于设定宽度
{
TempWidth = ThumbnailWidth;
TempHeight = Convert.ToInt32(Convert.ToDecimal(PhotoHeight) / Convert.ToDecimal(PhotoWidth) * Convert.ToDecimal(ThumbnailWidth));
if (TempHeight > ThumbnailHeight)
{
TempWidth = Convert.ToInt32(Convert.ToDecimal(TempWidth) / Convert.ToDecimal(TempHeight) * Convert.ToDecimal(ThumbnailHeight));
TempHeight = ThumbnailHeight;
}
}
else
{
if (PhotoHeight > ThumbnailHeight)
{
TempHeight = ThumbnailHeight;
TempWidth = Convert.ToInt32(Convert.ToDecimal(PhotoWidth) / Convert.ToDecimal(PhotoHeight) * Convert.ToDecimal(ThumbnailHeight));
}
}
//System.Web.HttpContext.Current.Response.Write(TempHeight.ToString()+"，");
//System.Web.HttpContext.Current.Response.Write(TempWidth.ToString());
//System.Web.HttpContext.Current.Response.End();
if (TempHeight <= 0)
{
TempHeight = 1;
}
if (TempWidth <= 0)
{
TempWidth = 1;
}
System.Drawing.Image bitmap = new System.Drawing.Bitmap(TempWidth, TempHeight);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
//清空一下画布
g.Clear(Color.Empty);
//在指定位置画图
g.DrawImage(xBitmap, new System.Drawing.Rectangle(0, 0, TempWidth, TempHeight), new System.Drawing.Rectangle(1, 1, xBitmap.Width - 1, xBitmap.Height - 1), System.Drawing.GraphicsUnit.Pixel);
// 以下代码为保存图片时,设置压缩质量
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 95;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
encoderParams.Param[0] = encoderParam;
//获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象.
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICI = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("jpeg"))
{
jpegICI = arrayICI[x];
//设置JPEG编码
break;
}
}
if (jpegICI != null)
{
//System.Web.HttpContext.Current.Response.Write("a");
EKFileUpload.doCreatrDir(smallSaveFile);
bitmap.Save(smallSaveFile, jpegICI, encoderParams);
}
else
{
//System.Web.HttpContext.Current.Response.Write("b");
EKFileUpload.doCreatrDir(smallSaveFile);
bitmap.Save(smallSaveFile, xObject);
}
bitmap.Dispose();
}
xBitmap.Dispose();
}
smallpicpath = smallFileName;
}
else
{
EKMessageBox.Show("文件上传失败,因为文件格式不允许上传！");
return;
}
}
}
/// <summary>
/// 压缩到指定尺寸
/// </summary>
/// <param name="oldfile">原文件</param>
/// <param name="newfile">新文件</param>
public bool Compress(string oldfile, string newfile)
{
try
{
System.Drawing.Image img = System.Drawing.Image.FromFile(oldfile);
System.Drawing.Imaging.ImageFormat thisFormat = img.RawFormat;
Size newSize = new Size(100, 125);
Bitmap outBmp = new Bitmap(newSize.Width, newSize.Height);
Graphics g = Graphics.FromImage(outBmp);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(img, new Rectangle(0, 0, newSize.Width, newSize.Height), 0, 0, img.Width, img.Height, GraphicsUnit.Pixel);
g.Dispose();
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 100;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
encoderParams.Param[0] = encoderParam;
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICI = null;
for (int x = 0; x < arrayICI.Length; x++)
if (arrayICI[x].FormatDescription.Equals("JPEG"))
{
jpegICI = arrayICI[x]; //设置JPEG编码
break;
}
img.Dispose();
if (jpegICI != null) outBmp.Save(newfile, System.Drawing.Imaging.ImageFormat.Jpeg);
outBmp.Dispose();
return true;
}
catch
{
return false;
}
}
/// <summary>
/// 上传略缩图并添加水印
/// </summary>
/// <param name="files">FileUpload控件</param>
/// <returns></returns>
public static void ImageUpLoad(FileUpload files, Int32 Width, Int32 Height, Watermark watermark, ref string picpath)
{
//System.Drawing.Image xImage;
System.Drawing.Bitmap xBitmap;
int PhotoHeight, PhotoWidth;
//Rectangle NewPhoto;
System.Drawing.Imaging.ImageFormat xObject;
picpath = "";
if (files.FileName != "")
{
string ext = EKFileUpload.getExtend(files.FileName);
ext = ext.ToLower();
if (ext == "gif" || ext == "jpg" || ext == "jpeg" || ext == "bmp" || ext == "png")
{
long FLength = files.PostedFile.ContentLength / 1024;
if (FLength > MS_ConfigBLL.UploadSize)
{
EKMessageBox.Show("文件上传失败！因为上传的文件超过了" + MS_ConfigBLL.UploadSize + "KB！");
}
else
{
string createfilename = EKFileUpload.createFileName();
string FileName = "/" + MS_ConfigBLL.UploadPath + "/" + EKFileUpload.getMyPath() + createfilename + "." + ext;
string SaveFile = EKFileUpload.FilePath + FileName;
//EKFileUpload.doCreatrDir(SaveFile);
//files.SaveAs(SaveFile);
picpath = FileName.Replace("//", "/");
switch (ext)
{
case ".gif":
xObject = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ".bmp":
xObject = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ".png":
xObject = System.Drawing.Imaging.ImageFormat.Png;
break;
default:
xObject = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
}
xBitmap = new Bitmap(files.FileContent);//------------------
PhotoHeight = xBitmap.Height;
PhotoWidth = xBitmap.Width;
Int32 TempHeight = 0;
Int32 TempWidth = 0;
if (PhotoWidth <= Width && PhotoHeight <= Height)
{
TempWidth = PhotoWidth;
TempHeight = PhotoHeight;
}
else
{
if (PhotoWidth > Width)//图片宽度大于设定宽度
{
TempWidth = Width;
TempHeight = Convert.ToInt32(Convert.ToDecimal(PhotoHeight) / Convert.ToDecimal(PhotoWidth) * Convert.ToDecimal(Width));
if (TempHeight > Height)
{
TempWidth = Convert.ToInt32(Convert.ToDecimal(TempWidth) / Convert.ToDecimal(TempHeight) * Convert.ToDecimal(Height));
TempHeight = Height;
}
}
else
{
if (PhotoHeight > Height)
{
TempHeight = Height;
TempWidth = Convert.ToInt32(Convert.ToDecimal(PhotoWidth) / Convert.ToDecimal(PhotoHeight) * Convert.ToDecimal(Height));
}
}
//System.Web.HttpContext.Current.Response.Write(TempHeight.ToString()+"，");
//System.Web.HttpContext.Current.Response.Write(TempWidth.ToString());
//System.Web.HttpContext.Current.Response.End();
if (TempHeight <= 0)
{
TempHeight = 1;
}
if (TempWidth <= 0)
{
TempWidth = 1;
}
}
System.Drawing.Image bitmap = new System.Drawing.Bitmap(TempWidth, TempHeight);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
//清空一下画布
g.Clear(Color.Empty);
//在指定位置画图
g.DrawImage(xBitmap, new System.Drawing.Rectangle(0, 0, TempWidth, TempHeight), new System.Drawing.Rectangle(1, 1, xBitmap.Width - 1, xBitmap.Height - 1), System.Drawing.GraphicsUnit.Pixel);
//添加水印
if (watermark != null)
{
if (watermark.MarkType == "text")
{
//声明字体对象
Font cFont = null;
//用来测试水印文本长度得尺子
SizeF size = new SizeF();
int[] sizes = new int[] { watermark.Size, 48, 32, 16, 8, 6, 4 };
//探测出一个适合图片大小得字体大小，以适应水印文字大小得自适应
for (int i = 0; i < 7; i++)
{
if (sizes[i] == 0)
{
continue;
}
//创建一个字体对象
cFont = new Font(watermark.FontFamily, sizes[i], FontStyle.Regular);
//是否加粗、倾斜
if (watermark.TextBlod && watermark.TextItalic)
{
cFont = new Font(watermark.FontFamily, sizes[i], FontStyle.Bold | FontStyle.Italic);
}
else if (watermark.TextBlod)
{
cFont = new Font(watermark.FontFamily, sizes[i], FontStyle.Bold);
}
else if (watermark.TextItalic)
{
cFont = new Font(watermark.FontFamily, sizes[i], FontStyle.Italic);
}
//测量文本大小
size = g.MeasureString(watermark.Text, cFont);
//匹配第一个符合要求得字体大小
if ((ushort)size.Width < (ushort)TempWidth)
{
break;
}
}
Brush brush = new SolidBrush(Color.FromArgb(Convert.ToInt32(watermark.Transparency * 255), watermark.TextColor));
//添加水印 文字
g.DrawString(watermark.Text, cFont, brush, watermark.Position(watermark.Place, new SizeF(TempWidth, TempHeight), size));
}
else if (watermark.MarkType == "image")
{
//获得水印图像
System.Drawing.Image markImg = System.Drawing.Image.FromFile(EKFileUpload.FilePath + watermark.ImgPath);
//创建颜色矩阵
float[][] ptsArray =
{
new float[] { 1, 0, 0, 0, 0 },
new float[] { 0, 1, 0, 0, 0 },
new float[] { 0, 0, 1, 0, 0 },
new float[] { 0, 0, 0, watermark.Transparency, 0 }, //注意：此处为0.0f为完全透明，1.0f为完全不透明
new float[] { 0, 0, 0, 0, 1 }
};
ColorMatrix colorMatrix = new ColorMatrix(ptsArray);
//新建一个Image属性
ImageAttributes imageAttributes = new ImageAttributes();
//将颜色矩阵添加到属性
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default,
ColorAdjustType.Default);
//原图过小
if (markImg.Width > TempWidth || markImg.Height > TempHeight)
{
System.Drawing.Image.GetThumbnailImageAbort callb = null;
//对水印图片生成缩略图,缩小到原图得1/4
System.Drawing.Image new_img = markImg.GetThumbnailImage(TempWidth / 4, markImg.Height * TempWidth / 4 / markImg.Width, callb, new System.IntPtr());
//添加水印图片
g.DrawImage(new_img, watermark.Position(watermark.Place, new Size(TempWidth, TempHeight), new_img.Size), 0, 0, new_img.Width, new_img.Height, GraphicsUnit.Pixel, imageAttributes);
//释放缩略图
new_img.Dispose();
}
else
{
//添加水印图片
g.DrawImage(markImg, watermark.Position(watermark.Place, new Size(TempWidth, TempHeight), markImg.Size), 0, 0, markImg.Width, markImg.Height, GraphicsUnit.Pixel, imageAttributes);
}
}
}
// 以下代码为保存图片时,设置压缩质量
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 95;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
encoderParams.Param[0] = encoderParam;
//获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象.
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICI = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("jpeg"))
{
jpegICI = arrayICI[x];
//设置JPEG编码
break;
}
}
if (jpegICI != null)
{
//System.Web.HttpContext.Current.Response.Write("a");
EKFileUpload.doCreatrDir(SaveFile);
bitmap.Save(SaveFile, jpegICI, encoderParams);
}
else
{
//System.Web.HttpContext.Current.Response.Write("b");
EKFileUpload.doCreatrDir(SaveFile);
bitmap.Save(SaveFile, xObject);
}
g.Dispose();
bitmap.Dispose();
xBitmap.Dispose();
}
}
//picpath = FileName;
}
else
{
EKMessageBox.Show("文件上传失败,因为文件格式不允许上传！");
return;
}
}
/// <summary>
/// 无损压缩图片
/// </summary>
/// <param name="sFile">原图片</param>
/// <param name="dFile">压缩后保存位置</param>
/// <param name="dHeight">高度</param>
/// <param name="dWidth"></param>
/// <param name="flag">压缩质量 1-100</param>
/// <returns></returns>
public static bool GetPicThumbnail(string sFile, string dFile, ref string errMsg, int dHeight = 0, int dWidth = 0, int flag = 60)
{
System.Drawing.Image iSource = System.Drawing.Image.FromFile(sFile);
ImageFormat tFormat = iSource.RawFormat;
int sW = 0, sH = 0;
//按比例缩放
Size tem_size = new Size(iSource.Width, iSource.Height);
dHeight = dHeight == 0 ? tem_size.Height : dHeight;
dWidth = dWidth == 0 ? tem_size.Width : dWidth;
if (tem_size.Width > dHeight || tem_size.Width > dWidth) //将**改成c#中的或者操作符号
{
if ((tem_size.Width * dHeight) > (tem_size.Height * dWidth))
{
sW = dWidth;
sH = (dWidth * tem_size.Height) / tem_size.Width;
}
else
{
sH = dHeight;
sW = (tem_size.Width * dHeight) / tem_size.Height;
}
}
else
{
sW = tem_size.Width;
sH = tem_size.Height;
}
Bitmap ob = new Bitmap(dWidth, dHeight);
Graphics g = Graphics.FromImage(ob);
g.Clear(Color.WhiteSmoke);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(iSource, new Rectangle((dWidth - sW) / 2, (dHeight - sH) / 2, sW, sH), 0, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);
g.Dispose();
//以下代码为保存图片时，设置压缩质量
EncoderParameters ep = new EncoderParameters();
long[] qy = new long[1];
qy[0] = flag;//设置压缩的比例1-100
EncoderParameter eParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICIinfo = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("JPEG"))
{
jpegICIinfo = arrayICI[x];
break;
}
}
if (jpegICIinfo != null)
{
ob.Save(dFile, jpegICIinfo, ep);//dFile是压缩后的新路径
}
else
{
ob.Save(dFile, tFormat);
}
return(true);
}
catch (Exception ex)
{
errMsg = ex.Message + ",堆栈:" + ex.StackTrace + "InnerException:" + ex.InnerException;
return(false);
}
finally
{
iSource.Dispose();
ob.Dispose();
}
}
/// <summary>
/// 生成缩略图
/// </summary>
/// <param name="filePath">源路径</param>
/// <param name="smallSaveFile">目标路径</param>
/// <param name="ThumbnailWidth">缩略图宽</param>
/// <param name="ThumbnailHeight">缩略图高</param>
public static void ImageUpLoad(string filePath, string smallSaveFile, Int32 ThumbnailWidth, Int32 ThumbnailHeight)
{
System.Drawing.Bitmap xBitmap;
int PhotoHeight, PhotoWidth;
System.Drawing.Imaging.ImageFormat xObject;
if (filePath != "")
{
string ext = EKFileUpload.getExtend(filePath);
ext = ext.ToLower();
if (ext == "gif" || ext == "jpg" || ext == "jpeg" || ext == "bmp" || ext == "png")
{
switch (ext)
{
case ".gif":
xObject = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ".bmp":
xObject = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ".png":
xObject = System.Drawing.Imaging.ImageFormat.Png;
break;
default:
xObject = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
}
xBitmap = new Bitmap(filePath);
PhotoHeight = xBitmap.Height;
PhotoWidth = xBitmap.Width;
Int32 TempHeight = 0;
Int32 TempWidth = 0;
if (PhotoWidth <= ThumbnailWidth && PhotoHeight <= ThumbnailHeight)
{
EKFileUpload.doCreatrDir(smallSaveFile);
xBitmap.Save(smallSaveFile);
}
else
{
if (PhotoWidth > ThumbnailWidth)//图片宽度大于设定宽度
{
TempWidth = ThumbnailWidth;
TempHeight = Convert.ToInt32(Convert.ToDecimal(PhotoHeight) / Convert.ToDecimal(PhotoWidth) * Convert.ToDecimal(ThumbnailWidth));
if (TempHeight > ThumbnailHeight)
{
TempWidth = Convert.ToInt32(Convert.ToDecimal(TempWidth) / Convert.ToDecimal(TempHeight) * Convert.ToDecimal(ThumbnailHeight));
TempHeight = ThumbnailHeight;
}
}
else
{
if (PhotoHeight > ThumbnailHeight)
{
TempHeight = ThumbnailHeight;
TempWidth = Convert.ToInt32(Convert.ToDecimal(PhotoWidth) / Convert.ToDecimal(PhotoHeight) * Convert.ToDecimal(ThumbnailHeight));
}
}
if (TempHeight <= 0)
{
TempHeight = 1;
}
if (TempWidth <= 0)
{
TempWidth = 1;
}
System.Drawing.Image bitmap = new System.Drawing.Bitmap(TempWidth, TempHeight);
//新建一个画板
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
//清空一下画布
g.Clear(Color.Empty);
//在指定位置画图
g.DrawImage(xBitmap, new System.Drawing.Rectangle(0, 0, TempWidth, TempHeight), new System.Drawing.Rectangle(1, 1, xBitmap.Width - 1, xBitmap.Height - 1), System.Drawing.GraphicsUnit.Pixel);
// 以下代码为保存图片时,设置压缩质量
EncoderParameters encoderParams = new EncoderParameters();
long[] quality = new long[1];
quality[0] = 80;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
encoderParams.Param[0] = encoderParam;
//获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象.
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICI = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("jpeg"))
{
jpegICI = arrayICI[x];
//设置JPEG编码
break;
}
}
if (jpegICI != null)
{
//System.Web.HttpContext.Current.Response.Write("a");
EKFileUpload.doCreatrDir(smallSaveFile);
bitmap.Save(smallSaveFile, jpegICI, encoderParams);
}
else
{
//System.Web.HttpContext.Current.Response.Write("b");
EKFileUpload.doCreatrDir(smallSaveFile);
xBitmap.Dispose();
bitmap.Save(smallSaveFile, xObject);
}
bitmap.Dispose();
}
xBitmap.Dispose();
}
else
{
//格式不对
}
}
}
/// <summary>
/// 无损压缩图片
/// </summary>
/// <param name="sFile">原图片</param>
/// <param name="dFile">压缩后保存位置</param>
/// <param name="height">高度</param>
/// <param name="width"></param>
/// <param name="flag">压缩质量 1-100</param>
/// <param name="type">压缩缩放类型</param>
/// <returns></returns>
public bool Thumbnail(string sFile, string dFile, int height, int width, int flag, ImgThumbnailType type)
{
System.Drawing.Image iSource = System.Drawing.Image.FromFile(sFile);
ImageFormat tFormat = iSource.RawFormat;
//缩放后的宽度和高度
int towidth = width;
int toheight = height;
//
int x = 0;
int y = 0;
int ow = iSource.Width;
int oh = iSource.Height;
switch (type)
{
case ImgThumbnailType.WH://指定高宽缩放（可能变形）
{
break;
}
case ImgThumbnailType.W://指定宽，高按比例
{
toheight = iSource.Height * width / iSource.Width;
break;
}
case ImgThumbnailType.H://指定高，宽按比例
{
towidth = iSource.Width * height / iSource.Height;
break;
}
case ImgThumbnailType.Cut://指定高宽裁减（不变形）
{
if ((double)iSource.Width / (double)iSource.Height > (double)towidth / (double)toheight)
{
oh = iSource.Height;
ow = iSource.Height * towidth / toheight;
y = 0;
x = (iSource.Width - ow) / 2;
}
else
{
ow = iSource.Width;
oh = iSource.Width * height / towidth;
x = 0;
y = (iSource.Height - oh) / 2;
}
break;
}
default:
break;
}
Bitmap ob = new Bitmap(towidth, toheight);
Graphics g = Graphics.FromImage(ob);
g.Clear(System.Drawing.Color.WhiteSmoke);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(iSource
, new Rectangle(x, y, towidth, toheight)
, new Rectangle(0, 0, iSource.Width, iSource.Height)
, GraphicsUnit.Pixel);
g.Dispose();
//以下代码为保存图片时，设置压缩质量
EncoderParameters ep = new EncoderParameters();
long[] qy = new long[1];
qy[0] = flag;//设置压缩的比例1-100
EncoderParameter eParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICIinfo = null;
for (int i = 0; i < arrayICI.Length; i++)
{
if (arrayICI[i].FormatDescription.Equals("JPEG"))
{
jpegICIinfo = arrayICI[i];
break;
}
}
if (jpegICIinfo != null)
{
ob.Save(dFile, jpegICIinfo, ep);//dFile是压缩后的新路径
}
else
{
ob.Save(dFile, tFormat);
}
return true;
}
catch
{
return false;
}
finally
{
iSource.Dispose();
ob.Dispose();
}
}
public MemoryStream BmpToJpeg(Image bmp)
{
var qualityEncoder = Encoder.Quality;
const int quality = 100;
var ratio = new EncoderParameter(qualityEncoder, quality);
var codecParams = new EncoderParameters(1);
codecParams.Param[0] = ratio;
var jpegCodecInfo = GetEncoder(ImageFormat.Jpeg);
var ms = new MemoryStream();
bmp.Save(ms, jpegCodecInfo, codecParams);
return ms;
}
/// <summary>
/// To create new image with new dimensions.
/// </summary>
/// <param name="smallImgPath">Source Img</param>
/// <param name="bigImgPath">Destination Img</param>
/// <param name="width">New Width</param>
/// <param name="height">New Height</param>
private void SaveThumbnail(string smallImgPath, string bigImgPath, int width, int height)
{
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters=new EncoderParameters();
ImageCodecInfo myImageCodecInfo;
// Get an ImageCodecInfo object that represents the JPEG codec.
myImageCodecInfo = GetEncoderInfo("image/png");
System.Drawing.Image.GetThumbnailImageAbort myCallback = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
Bitmap myBitmap = new Bitmap(smallImgPath);
// for the Quality parameter category.
myEncoder = Encoder.Quality;
// Save the bitmap as a JPEG file with quality level 50.
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
int imageHeight = (int)((width * myBitmap.Height) / myBitmap.Width);
int imageWidth = (int)((height * myBitmap.Width) / myBitmap.Height);
System.Drawing.Image myThumbnail = myBitmap.GetThumbnailImage(imageWidth, height, myCallback, IntPtr.Zero);
myThumbnail.Save(bigImgPath, myImageCodecInfo, myEncoderParameters);
myBitmap.Dispose();
myThumbnail.Dispose();
}
public EncoderParameters()
{
Param = new EncoderParameter[1];
}
private static void SaveImage(Bitmap bmp, string path)
{
var jgpEncoder = GetEncoder(ImageFormat.Png);
var myEncoder = System.Drawing.Imaging.Encoder.Quality;
var myEncoderParameters = new EncoderParameters(1);
var myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
bmp.Save(path, jgpEncoder, myEncoderParameters);
GC.Collect();
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
double proporcao;
int w, h, xCrop, yCrop;
string imgName = Request.QueryString["img"];
byte crop = Convert.ToByte(Request.QueryString["c"]);
string colorName = Request.QueryString["b"];
int interpolationMode = Convert.ToInt16(Request.QueryString["i"]);
//Precisão do redimensionamento
int p = Convert.ToInt32(Request.QueryString["p"]);
int widthT = Convert.ToInt32(Request.QueryString["w"]);
int heightT = Convert.ToInt32(Request.QueryString["h"]);
//Nome da imagem a ser cacheada ou comparada
string strImg = imgName.Substring(0, imgName.LastIndexOf('.')) + "_" + widthT + "x" + heightT + "_" + crop.ToString() + (string.IsNullOrEmpty(colorName) ? "" : "_" + colorName) + "_" + interpolationMode + "_" + p + imgName.Substring(imgName.LastIndexOf('.'));
//Path com as imagens "cacheadas"
string cachePath = Path.Combine(Server.MapPath("~/Arquivos/ThumbCache/"), strImg);
//Dados da última
DateTime dataModCache = File.GetLastWriteTime(Server.MapPath(imgName));
DateTime dataModImg = File.GetLastWriteTime(cachePath);
int comparacao = DateTime.Compare(dataModCache, dataModImg);
//Se o arquivo já existe no cache
if (File.Exists(cachePath) && comparacao <= 0)
{
OutputCacheResponse(HttpContext.Current, File.GetLastWriteTime(cachePath));
HttpContext.Current.Response.WriteFile(cachePath);
return;
}
else
{
//Cria diretório com as imagens (parâmetro)
Directory.CreateDirectory(Path.GetDirectoryName(cachePath));
//Deleta se já existe imagem cacheada
if (File.Exists(cachePath))
{
File.Delete(cachePath);
}
//Cria o "bitmap" com imagem original
string imgPath = HttpContext.Current.Request.MapPath("~/" + imgName);
Bitmap bmp = new Bitmap(imgPath);
ImageFormat formato = bmp.RawFormat;
double widthO = bmp.Size.Width;
double heightO = bmp.Size.Height;
//Caso só largura ou altura sejam transmitidas
if (widthT == 0 || heightT == 0)
{
//Cálculo com base na largura (widthT)
if (widthT > 0)
{
heightO = widthT / (widthO / heightO);
widthO = widthT;
heightT = Convert.ToInt32(heightO);
//Cálculo com base na altura (heightT)
}
else
{
widthO = heightT / (heightO / widthO);
heightO = heightT;
widthT = Convert.ToInt32(widthO);
}
}
else
{
//Caso opção seja "CROPAR"
if (crop == 1)
{
//Se uma das medidas originais forem MAIORES que o "Target"
if (widthO > widthT || heightO > heightT)
{
proporcao = widthO / heightO;
while (widthO > widthT || heightO > heightT)
{
widthO--;
heightO = widthO / proporcao;
if (widthO <= widthT && heightO <= heightT)
{
break;
}
}
}
//Se uma das medidas originais forem MENORES que o "Target"
if (widthO < widthT || heightO < heightT)
{
proporcao = widthO / heightO;
while (widthO < widthT || heightO < heightT)
{
widthO++;
heightO = widthO / proporcao;
if (widthO >= widthT && heightO >= heightT)
{
break;
}
}
}
}
else
{
//Se uma das medidas originais forem MAIORES que o "Target"
if (widthO > widthT || heightO > heightT)
{
proporcao = widthO / heightO;
while (widthO > widthT || heightO > heightT)
{
widthO--;
heightO = widthO / proporcao;
if (widthO <= widthT && heightO <= heightT)
{
break;
}
}
}
else
{
//Se uma das medidas originais forem MENORES que o "Target"
if (widthO < widthT || heightO < heightT)
{
proporcao = widthO / heightO;
while (widthO < widthT && heightO < heightT)
{
widthO++;
heightO = widthO / proporcao;
if (widthO >= widthT && heightO >= heightT)
{
break;
}
}
}
}
}
}
//Medidas finais (incluindo valor de precisão)
w = Convert.ToInt32(widthO) + p;
h = Convert.ToInt32(heightO) + p;
//Calcula as coordenadas para corte
xCrop = Convert.ToInt32((w - widthT) / 2);
yCrop = Convert.ToInt32((h - heightT) / 2);
Bitmap bmpT = new Bitmap(widthT, heightT);
EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, 95L);
//Image codec
ImageCodecInfo imgCodec = ImageCodecInfo.GetImageEncoders().FirstOrDefault(a => a.FormatID == formato.Guid);
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
//Cor de fundo
Color bg = Color.White;
//Caso a cor não seja transmitida
if (string.IsNullOrEmpty(colorName))
{
//se PNG "transparent"
if (formato.Equals(ImageFormat.Png) || formato.Equals(ImageFormat.Gif))
bg = Color.Transparent;
}
else
{
try
{
//Html color (hex)
bg = ColorTranslator.FromHtml("#" + colorName);
}
catch (Exception)
{
//Html color
bg = ColorTranslator.FromHtml(colorName);
}
}
//Manipula e salva em cache
using (Graphics g = Graphics.FromImage(bmpT))
{
g.CompositingQuality = CompositingQuality.HighSpeed;
g.InterpolationMode = interpolationMode == 0 ? InterpolationMode.HighQualityBicubic : InterpolationMode.HighQualityBilinear;
g.CompositingMode = CompositingMode.SourceCopy;
g.Clear(bg);
g.DrawImage(bmp, -xCrop, -yCrop, w, h);
using (MemoryStream memoryStream = new MemoryStream())
{
bmpT.Save(memoryStream, imgCodec, encoderParams);
OutputCacheResponse(HttpContext.Current, File.GetLastWriteTime(imgPath));
using (FileStream diskCacheStream = new FileStream(cachePath, FileMode.CreateNew))
{
memoryStream.WriteTo(diskCacheStream);
}
memoryStream.WriteTo(HttpContext.Current.Response.OutputStream);
}
}
bmp.Dispose();
bmpT.Dispose();
}
}
catch (Exception ex)
{
Font font = new Font("verdana", 12);
Bitmap bmp = new Bitmap(ex.Message.Length * 10, 50);
Graphics g = Graphics.FromImage(bmp);
g.DrawString(ex.Message.Replace("'", ""), font, new SolidBrush(Color.White), new PointF(5.0F, 5.0F));
bmp.Save(Response.OutputStream, ImageFormat.Jpeg);
g.Dispose();
bmp.Dispose();
}
}
// Saves the image to specific location, save location includes filename
private static void saveImageToLocation(Image theImage, string saveLocation)
{
// Strip the file from the end of the dir
string saveFolder = Path.GetDirectoryName(saveLocation);
if (!Directory.Exists(saveFolder))
{
Directory.CreateDirectory(saveFolder);
}
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
// Create an Encoder object based on the GUID
// for the Quality parameter category.
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
// Create an EncoderParameters object.
// An EncoderParameters object has an array of EncoderParameter
// objects. In this case, there is only one
// EncoderParameter object in the array.
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 90L);
myEncoderParameters.Param[0] = myEncoderParameter;
// Save to disk
theImage.Save(saveLocation, jgpEncoder, myEncoderParameters);
}
public void SaveImage(ImageEventArgs e)
{
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters;
myImageCodecInfo = GetEncoderInfo(EncoderType);
myEncoder = Encoder.Quality;
myEncoderParameters = new EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, imageQuality);
myEncoderParameters.Param[0] = myEncoderParameter;
try
{
string finalFile = System.IO.Path.Combine(e.FullSaveLocation, e.FullFileName) + "." + e.Extension;
e.CapturedImage.Save(finalFile,
myImageCodecInfo, myEncoderParameters);
// e.CapturedImage.Save(finalFile);
// e.CapturedImage.Save("c:\\users\\affan\\desktop\\jjajja.jpeg");
ShowToastForm(finalFile);
//this.Invoke(new ShowToastFormInvoker(ShowToastForm), e.FullSaveLocation + ".jpg");
}
catch(ArgumentException ex)
{
Console.WriteLine(ex.Message);
}
finally
{
myEncoderParameters.Dispose();
myEncoderParameter.Dispose();
}
}
/// <summary>
/// 图片post处理
/// </summary>
/// <param name="types"></param>
/// <param name="max_length"></param>
/// <param name="filter"></param>
/// <returns></returns>
private IEnumerable <string> Images_C(string types, string reportNumber, int max_length, params string[] filter)
{
string result = "";
string names = "";
var files = this.Files.GetFiles(max_length, filter);
foreach (var file in files)
{
//首先先将图片保存
string path = AppDomain.CurrentDomain.BaseDirectory;
var format = Path.GetExtension(file.FileName);
names = DateTime.Now.ToString("yyyyMMddhhmmssfff") + format;
var savePath = path + "/UploadFile/" + reportNumber + "/";
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
file.SaveAs(Path.Combine(savePath, names));
if (format.ToUpper().Equals(".MP4"))
{
result = names;
}
else
{
System.IO.Stream oStream = file.InputStream;
System.Drawing.Image img = System.Drawing.Image.FromStream(oStream);
#region 图片剪裁
switch (types)
{
//生成一个小的缩略图（暂定100*100） logo 同时生成一个小一倍的缩略图 min
case "0":
//生成一个小的缩略图（暂定100*100） logo
string newimgname = "logo" + names;
decimal oWidth = img.Width; //原图宽度
decimal oHeight = img.Height; //原图高度
decimal dStandard = 150;
decimal dWidth = img.Width, dHight = img.Height;
//判断图片大小
//宽高比对、低于标准原图创建
if (dWidth <= dHight)
{
if (dWidth > dStandard)
{
dHight = Math.Round(dHight / (dWidth / dStandard));
dWidth = dStandard;
}
}
else
{
if (dHight > dStandard)
{
dWidth = Math.Round(dWidth / (dHight / dStandard));
dHight = dStandard;
}
}
Bitmap tImage = new Bitmap(int.Parse(dWidth.ToString()), int.Parse(dHight.ToString()));
Graphics g = Graphics.FromImage(tImage);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //设置高质量插值法
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //设置高质量,低速度呈现平滑程度
g.Clear(Color.Transparent); //清空画布并以透明背景色填充
g.DrawImage(img, new Rectangle(0, 0, int.Parse(dWidth.ToString()), int.Parse(dHight.ToString())), new Rectangle(0, 0, int.Parse(oWidth.ToString()), int.Parse(oHeight.ToString())), GraphicsUnit.Pixel);
//图片质量设置
EncoderParameter p;
EncoderParameters ps;
ps = new EncoderParameters(1);
p = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, ((long)100));
ps.Param[0] = p;
ImageCodecInfo ii = GetCodecInfo("image/jpeg");
try
{
//以JPG格式保存图片
tImage.Save(path + "/UploadFile/" + reportNumber + "/" + newimgname, ii, ps);
}
catch
{
result = "";
break;
}
//生成小缩略图结束，生成一个小一倍的缩略图 min
newimgname = "min" + names;
//int i_s = 400 / oWidth;
//tWidth = oWidth *i_s;
//tHeight = oHeight * i_s;
dStandard = 400;
decimal dWidths = img.Width, dHights = img.Height;
//判断图片大小
//宽高比对、低于标准原图创建
if (dWidths <= dHights)
{
if (dWidths > dStandard)
{
dHights = Math.Round(dHights / (dWidths / dStandard));
dWidths = dStandard;
}
}
else
{
if (dHights > dStandard)
{
dWidths = Math.Round(dWidths / (dHights / dStandard));
dHights = dStandard;
}
}
tImage = new Bitmap(int.Parse(dWidths.ToString()), int.Parse(dHights.ToString()));
g = Graphics.FromImage(tImage);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //设置高质量插值法
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //设置高质量,低速度呈现平滑程度
g.Clear(Color.Transparent); //清空画布并以透明背景色填充
g.DrawImage(img, new Rectangle(0, 0, int.Parse(dWidths.ToString()), int.Parse(dHights.ToString())), new Rectangle(0, 0, int.Parse(oWidth.ToString()), int.Parse(oHeight.ToString())), GraphicsUnit.Pixel);
// newimgname = "new" + newimgname;
try
{
//以JPG格式保存图片
tImage.Save(path + "/UploadFile/" + reportNumber + "/" + newimgname, ii, ps);
}
catch
{
result = "";
break;
}
result = names;
//完成，不存入数据库只存原图片，因为缩略图是以原图片加前缀命名的
break;
}
#endregion
}
yield return(result);
}
//存储图片所需的绝对路径
}
/// 无损压缩图片
/// <param name="sFile">原图片</param>
/// <param name="dFile">压缩后保存位置</param>
/// <param name="dHeight">高度</param>
/// <param name="flag">压缩质量(数字越小压缩率越高) 1-100</param>
/// <returns></returns>
public bool GetPicThumbnail(string sFile, string dFile, int dHeight, int flag)
{
Image iSource = Image.FromFile(sFile);
ImageFormat tFormat = iSource.RawFormat;
int sW = 0, sH = 0;
//按比例缩放
Size tem_size = new Size(iSource.Width, iSource.Height);
if (tem_size.Height > dHeight)
{
sH = dHeight;
sW = (tem_size.Width * dHeight / tem_size.Height);
}
else
{
sW = tem_size.Width;
sH = tem_size.Height;
}
Bitmap ob = new Bitmap(sW, sH);
Graphics g = Graphics.FromImage(ob);
g.Clear(Color.WhiteSmoke);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(iSource, new Rectangle(0, 0, sW, sH), 0, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);
g.Dispose();
//以下代码为保存图片时，设置压缩质量
EncoderParameters ep = new EncoderParameters();
long[] qy = new long[1];
qy[0] = flag;//设置压缩的比例1-100
EncoderParameter eParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICIinfo = null;
for (int x = 0; x < arrayICI.Length; x++)
{
if (arrayICI[x].FormatDescription.Equals("JPEG"))
{
jpegICIinfo = arrayICI[x];
break;
}
}
if (jpegICIinfo != null)
{
ob.Save(dFile, jpegICIinfo, ep);//dFile是压缩后的新路径
}
else
{
ob.Save(dFile, tFormat);
}
return(true);
}
catch
{
return(false);
}
finally
{
iSource.Dispose();
ob.Dispose();
}
}
public EncoderParameters(int count)
{
Param = new EncoderParameter[count];
}
protected void Page_Load(object sender, EventArgs e)
{
String dosya_adi = Request.QueryString["dosya"];
Bitmap orjinal = new Bitmap(Server.MapPath(dosya_adi));
ImageFormat format = orjinal.RawFormat;
Int32 orjWidth = orjinal.Width;
Int32 orjHeight = orjinal.Height;
if (orjHeight < orjWidth)
{
if (orjinal.Width <= 349)
{
Int32 thumbGenislik = orjinal.Width;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbYukseklik = (Int32)((float)thumbGenislik / orjinal.Width * orjinal.Height);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
else
{
Int32 thumbGenislik = 349;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbYukseklik = (Int32)((float)thumbGenislik / orjinal.Width * orjinal.Height);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
}
if (orjWidth < orjHeight)
{
if (orjinal.Height <= 349)
{
Int32 thumbYukseklik = orjinal.Height;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbGenislik = (Int32)((float)thumbYukseklik / orjinal.Height * orjinal.Width);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
else
{
Int32 thumbYukseklik = 349;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbGenislik = (Int32)((float)thumbYukseklik / orjinal.Height * orjinal.Width);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
}
if (orjHeight == orjWidth)
{
if (orjinal.Height <= 349)
{
Int32 thumbGenislik = orjinal.Height;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbYukseklik = (Int32)((float)thumbGenislik / orjinal.Width * orjinal.Height);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
else
{
Int32 thumbGenislik = 349;
ImageCodecInfo cInfo;
if (format.Equals(ImageFormat.Gif) || format.Equals(ImageFormat.Png))
{
cInfo = GetEncoder(ImageFormat.Png);
Response.ContentType = "image/png";
}
else
{
cInfo = GetEncoder(ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
}
Encoder enc = Encoder.Quality;
EncoderParameters eParams = new EncoderParameters(1);
EncoderParameter eParam = new EncoderParameter(enc, 85L);
eParams.Param[0] = eParam;
Int32 thumbYukseklik = (Int32)((float)thumbGenislik / orjinal.Width * orjinal.Height);
Bitmap thumbResim = new Bitmap(thumbGenislik, thumbYukseklik);
Graphics g = Graphics.FromImage(thumbResim);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(orjinal, 0, 0, thumbGenislik, thumbYukseklik);
Response.Clear();
thumbResim.Save(Response.OutputStream, cInfo, eParams);
thumbResim.Dispose();
}
}
orjinal.Dispose();
}
///<summary>
///cmResize Ảnh theo chiều rộng được đưa ra
///cm thank to: http://webxaula.com/website/Thay-doi-kich-thuoc-anh-khi-upload-41-1.html
///</summary>
public void ResizeImage(string ImageSavePath, string fileName, int MaxWidthSideSize, Stream Buffer)
{
int intNewWidth;
int intNewHeight;
System.Drawing.Image imgInput = System.Drawing.Image.FromStream(Buffer);
ImageCodecInfo myImageCodecInfo;
myImageCodecInfo = GetEncoderInfo("image/jpeg");
//
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters myEncoderParameters = new EncoderParameters(1);
EncoderParameter myEncoderParameter;
//Giá trị width và height nguyên thủy của ảnh;
int intOldWidth = imgInput.Width;
int intOldHeight = imgInput.Height;
//Kiểm tra xem ảnh ngang hay dọc;
int intMaxSide;
/*if (intOldWidth >= intOldHeight)
{
intMaxSide = intOldWidth;
}
else
{
intMaxSide = intOldHeight;
}*/
//Để xác định xử lý ảnh theo width hay height thì bạn bỏ note phần trên;
//Ở đây mình chỉ sử dụng theo width nên gán luôn intMaxSide= intOldWidth; ^^;
intMaxSide = intOldWidth;
if (intMaxSide > MaxWidthSideSize)
{
//Gán width và height mới.
double dblCoef = MaxWidthSideSize / (double)intMaxSide;
intNewWidth = Convert.ToInt32(dblCoef * intOldWidth);
intNewHeight = Convert.ToInt32(dblCoef * intOldHeight);
}
else
{
//Nếu kích thước width/height (intMaxSide) cũ ảnh nhỏ hơn MaxWidthSideSize thì giữ nguyên //kích thước cũ;
intNewWidth = intOldWidth;
intNewHeight = intOldHeight;
}
//Tạo một ảnh bitmap mới;
Bitmap bmpResized = new Bitmap(imgInput, intNewWidth, intNewHeight);
//Phần EncoderParameter cho phép bạn chỉnh chất lượng hình ảnh ở đây mình để chất lượng tốt //nhất là 100L;
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
myEncoderParameters.Param[0] = myEncoderParameter;
//Lưu ảnh;
bmpResized.Save(ImageSavePath + fileName, myImageCodecInfo, myEncoderParameters);
//Giải phóng tài nguyên;
//Buffer.Close();
imgInput.Dispose();
bmpResized.Dispose();
}
/// <summary>
/// 自定义生成缩略图
/// </summary>
/// <param name="imagePath">图片路径</param>
/// <param name="thumbPath">缩略图路径</param>
/// <param name="width">缩略图宽度</param>
/// <param name="height">缩略图高度</param>
/// <param name="mode">生成缩略图的方式</param>
public static void GenerateThumb_ME(string imagePath)
{
Image image = Image.FromFile(imagePath);
string extension = imagePath.Substring(imagePath.LastIndexOf(".")).ToLower();
ImageFormat imageFormat = null;
switch (extension)
{
case ".jpg":
case ".jpeg":
imageFormat = ImageFormat.Jpeg;
break;
case ".bmp":
imageFormat = ImageFormat.Bmp;
break;
case ".png":
imageFormat = ImageFormat.Png;
break;
case ".gif":
imageFormat = ImageFormat.Gif;
break;
default:
imageFormat = ImageFormat.Jpeg;
break;
}
string save_folder = imagePath.Substring(0, imagePath.LastIndexOf('\\')) + "\\"; //保存的路径
string save_name = imagePath.Substring(imagePath.LastIndexOf('\\') + 1, imagePath.LastIndexOf('.') - imagePath.LastIndexOf('\\') - 1) + "_thumb"; //保存的文件名，不包含拓展名
string save_io_path = save_folder + save_name + extension; //保存的最终路径
int toWidth = image.Width / 3;
int toHeight = image.Height;
int x = 0;
int y = 0;
int ow = image.Width;
int oh = image.Height;
//款为原来的 1/3
toHeight = image.Height * toWidth / image.Width;
//新建一个bmp
Image bitmap = new Bitmap(toWidth, toHeight);
//新建一个画板
Graphics g = Graphics.FromImage(bitmap);
//设置高质量插值法
g.InterpolationMode = InterpolationMode.High;
//设置高质量,低速度呈现平滑程度
g.SmoothingMode = SmoothingMode.HighQuality;
//清空画布并以透明背景色填充
g.Clear(Color.Transparent);
//在指定位置并且按指定大小绘制原图片的指定部分
g.DrawImage(image,
new Rectangle(0, 0, toWidth, toHeight),
new Rectangle(x, y, ow, oh),
GraphicsUnit.Pixel);
g.Dispose();
EncoderParameters ep = new EncoderParameters();
long[] qy = new long[1];
qy[0] = 60;//设置压缩的比例1-100
EncoderParameter eParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);
ep.Param[0] = eParam;
try
{
ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegICIinfo = null;
for (int i = 0; i < arrayICI.Length; i++)
{
if (arrayICI[i].FormatDescription.Equals("JPEG"))
{
jpegICIinfo = arrayICI[i];
break;
}
}
if (jpegICIinfo != null)
{
bitmap.Save(save_io_path, jpegICIinfo, ep);
}
else
{
bitmap.Save(save_io_path, imageFormat);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (g != null)
{
g.Dispose();
}
if (bitmap != null)
{
bitmap.Dispose();
}
if (image != null)
{
image.Dispose();
}
}
}
private void saveJpeg(string path, Bitmap img, long quality)
{
// Encoder parameter for image quality
EncoderParameter qualityParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
// Jpeg image codec
ImageCodecInfo jpegCodec = this.getEncoderInfo("image/jpeg");
if (jpegCodec == null)
return;
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
img.Save(path, jpegCodec, encoderParams);
}
/// <summary>
///A imagem original tem 1024x640 e 539KB. Todas as imagens serão reduzidas para 800x500...
///A primeira compactação foi 1 (qualidade baixa) com 10% de qualidade: Imagem de saída tem 14KB.
///A segunda compactação foi 1 (qualidade baixa) com 40% de qualidade: Imagem de saída tem 34KB.
///A terceira compactação foi 1 (qualidade baixa) com 70% de qualidade: Imagem de saída tem 54KB.
///A quarta compactação foi 1 (qualidade baixa) com 100% de qualidade: Imagem de saída tem 299KB.
///A quinta compactação foi 2 (qualidade alta) com 10% de qualidade: Imagem de saída tem 15KB.
///A sexta compactação foi 2 (qualidade alta) com 40% de qualidade: Imagem de saída tem 36KB.
///A setima compactação foi 2 (qualidade alta) com 70% de qualidade: Imagem de saída tem 57KB.
///A oitava compactação foi 2 (qualidade alta) com 100% de qualidade: Imagem de saída tem 310KB.
/// </summary>
/// <param name="larguraMaxima">Largura da Imagem Nova</param>
/// <param name="alturaMaxima">Altura da Imagem Nova</param>
/// <param name="arquivoOriginal">Arquivo original que será transformado</param>
/// <param name="qualidade">Qualidade - 1 (Baixa) / 2 (Alta)</param>
/// <param name="nivelQualidade">Define a porcentagem de compactação que será aplicada sobre a imagem - 0 mais baixa até 100 mais alta</param>
/// <param name="excluirArquivoOriginal">Se enviar True ele irá excluir o Arquivo Original (enviado por parametro) e irá excluir o -comp1 (primeira compactação)</param>
/// <returns>Retorna o nome do arquivo final - que será o mesmo do arquivoFinal mas acrescido de '-comp2.jpg' ao invés de apenas .jpg. Retorna "ERRO" se ocorrer excessão</returns>
public string gerarNovaImagem(int larguraMaxima, int alturaMaxima, string arquivoOriginal, int qualidade, int nivelQualidade, bool excluirArquivoOriginal)
{
string arquivoFinal1 = arquivoOriginal.Replace(".jpg", "-comp1.jpg");
string arquivoFinal2 = arquivoOriginal.Replace(".jpg", "-comp2.jpg");
try
{
try
{
if (File.Exists(arquivoFinal1) == true)
{
File.Delete(arquivoFinal1);
}
}
catch
{
if (File.Exists(arquivoFinal2) == true)
{
File.Delete(arquivoFinal2);
}
}
//Analise e Dados técnicos de conversão feitos por essa classe - Fernando 102014... Eu enviei uma imagem em 600x400.
//As imagens aqui descritas foram salvas dentro do Namespace Grafico na Pasta Grafico dentro dessa DLL.
//A imagem original tem 1024x640 e 539KB. Todas as imagens serão reduzidas para 800x500...
//A primeira compactação foi 1 (qualidade baixa) com 10% de qualidade: Imagem de saída tem 14KB.
//A segunda compactação foi 1 (qualidade baixa) com 40% de qualidade: Imagem de saída tem 34KB.
//A terceira compactação foi 1 (qualidade baixa) com 70% de qualidade: Imagem de saída tem 54KB.
//A quarta compactação foi 1 (qualidade baixa) com 100% de qualidade: Imagem de saída tem 299KB.
//A quinta compactação foi 2 (qualidade alta) com 10% de qualidade: Imagem de saída tem 15KB.
//A sexta compactação foi 2 (qualidade alta) com 40% de qualidade: Imagem de saída tem 36KB.
//A setima compactação foi 2 (qualidade alta) com 70% de qualidade: Imagem de saída tem 57KB.
//A oitava compactação foi 2 (qualidade alta) com 100% de qualidade: Imagem de saída tem 310KB.
#region Altera a resolução da imagem
Image imagemOriginal;
Image imagemAlterada;
Graphics grafico; //Gráfico
Size dimensaoFinal = new Size(); //Dimensão
ImageFormat formato; //Formato
imagemOriginal = Image.FromFile(arquivoOriginal);
dimensaoFinal = this.novoTamanho(imagemOriginal.Size, new Size(larguraMaxima, alturaMaxima));
dimensaoFinal.Height = alturaMaxima; //precisei FORÇAR por que tava dando problema...
dimensaoFinal.Width = larguraMaxima;
//Define o novo formato da imagem
formato = imagemOriginal.RawFormat;
//Cria a nova imagem
if (dimensaoFinal.Width == 0)
{
dimensaoFinal.Width = 150;
}
if (dimensaoFinal.Height == 0)
{
dimensaoFinal.Height = 150;
}
imagemAlterada = new Bitmap(dimensaoFinal.Width, dimensaoFinal.Height);
grafico = Graphics.FromImage(imagemAlterada);
//Opções relativas à qualidade da nova imagem
if (qualidade == 1)
{
grafico.CompositingQuality = CompositingQuality.HighSpeed;
grafico.SmoothingMode = SmoothingMode.HighSpeed;
grafico.InterpolationMode = InterpolationMode.Low;
}
if (qualidade == 2)
{
grafico.CompositingQuality = CompositingQuality.HighQuality;
grafico.SmoothingMode = SmoothingMode.HighQuality;
grafico.InterpolationMode = InterpolationMode.High;
}
//Desenha a imagem no objeto gráfico this.grafico
grafico.DrawImage(imagemOriginal, new Rectangle(0, 0, dimensaoFinal.Width, dimensaoFinal.Height));
imagemAlterada.Save(arquivoFinal1);
//inicia a compactação da imagem
Image myImage = Image.FromFile(arquivoFinal1);
EncoderParameter qualityParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, nivelQualidade);
// Jpeg image codec
ImageCodecInfo jpegCodec = GetEncoderInfo("image/jpeg");
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
Thread.Sleep(500);
myImage.Save(arquivoFinal2, jpegCodec, encoderParams);
//tenta excluir o arquivoFinal1 (que é da primeira compactação) e o arquivo final (original) que foi enviado
if (excluirArquivoOriginal)
{
arquivoFinal1 = null;
//arquivoFinal2 = null;
imagemOriginal = null;
imagemAlterada = null;
grafico = null;
formato = null;
myImage = null;
qualityParam = null;
jpegCodec = null;
encoderParams = null;
try
{
File.Delete(arquivoFinal1);
}
catch
{
}
try
{
File.Delete(arquivoOriginal);
}
catch
{
}
}
return(arquivoFinal2);
#endregion
}
catch
{
return("ERRO");
}
finally
{
arquivoFinal1 = "";
arquivoFinal2 = "";
}
}
public static void saveJpeg(string path, Bitmap img)
{
// Encoder parameter for image quality
EncoderParameter qualityParam =
new EncoderParameter(Encoder.Quality, 85L);
// Jpeg image codec
ImageCodecInfo jpegCodec = getEncoderInfo("image/jpeg");
if (jpegCodec == null)
return;
EncoderParameters encoderParams = new EncoderParameters(1);
encoderParams.Param[0] = qualityParam;
img.Save(path, jpegCodec, encoderParams);
}
private Hashtable OnGetTexture(Hashtable keysvals)
{
Hashtable reply = new Hashtable();
int statuscode = 200;
string imgkey = (string)keysvals["key"];
if (imgkey == null || imgkey.Equals(""))
{
imgkey = SeaWaterTextureID;
}
m_log.Info("[MI IMAGESERVICE] Request for image " + imgkey);
byte[] data = GetTexture(imgkey);
if (data.Length == 1)
{
reply["str_response_string"] = "Error";
reply["int_response_code"] = 401;
reply["content_type"] = "text/plain";
}
else
{
// What follows was bluntly copied from the WorldMap module
MemoryStream imgstream = new MemoryStream();
Bitmap imgTexture = new Bitmap(1, 1);
ManagedImage managedImage;
Image image = (Image)imgTexture;
try
{
// Taking our jpeg2000 data, decoding it, then saving it to a byte array with regular jpeg data
imgstream = new MemoryStream();
// Decode image to System.Drawing.Image
if (OpenJPEG.DecodeToImage(data, out managedImage, out image))
{
// Save to bitmap
imgTexture = new Bitmap(image, new Size(256, 256));
ImageCodecInfo myImageCodecInfo;
Encoder myEncoder;
EncoderParameter myEncoderParameter;
EncoderParameters myEncoderParameters = new EncoderParameters();
myImageCodecInfo = GetEncoderInfo("image/jpeg");
myEncoder = Encoder.Quality;
myEncoderParameter = new EncoderParameter(myEncoder, 95L);
myEncoderParameters.Param[0] = myEncoderParameter;
myEncoderParameter = new EncoderParameter(myEncoder, 95L);
myEncoderParameters.Param[0] = myEncoderParameter;
// Save bitmap to stream
imgTexture.Save(imgstream, myImageCodecInfo, myEncoderParameters);
// Write the stream to a byte array for output
data = imgstream.ToArray();
}
}
catch (Exception)
{
m_log.Warn("[MI IMAGESERVICE]: Unable to generate image " + imgkey);
}
finally
{
// Reclaim memory, these are unmanaged resources
imgTexture.Dispose();
image.Dispose();
imgstream.Close();
imgstream.Dispose();
}
}
string dataStr = Convert.ToBase64String(data);
reply["str_response_string"] = dataStr;
reply["int_response_code"] = statuscode;
reply["content_type"] = "image/jpeg";
return(reply);
}
// Frame processing loop
void frameLoop(int width, int height)
{
Stopwatch fpsTimer;
Stopwatch fpsCountTimer;
float mspf = 1000 / fps;
int frames = 0;
ImageCodecInfo jpegCodec = GetEncoder(ImageFormat.Jpeg);
fpsCountTimer = Stopwatch.StartNew();
while (true)
{
if (rawTextureData != null)
{
fpsTimer = Stopwatch.StartNew();
byte[] _rawTextureData = rawTextureData;
byte[] bitmapRender = new byte[_rawTextureData.Length];
// Rearrange _rawTextureData from bottom-up big-endian to top-down small-endian
Parallel.For(0, height, row =>
{
for (int col = 0; col < width; col++)
{
for (int i = 0; i < 4; i++)
{
bitmapRender[row * 4 * width + 4 * col + i] = _rawTextureData[(height - 1 - row) * 4 * width + 4 * col + (3 - i)];
}
}
});
// Load bitmap from byte bitmapRender
Bitmap bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
var data = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
System.Runtime.InteropServices.Marshal.Copy(bitmapRender, 0, data.Scan0, bitmapRender.Length);
bitmap.UnlockBits(data);
// jpeg compression quality - realtime change
EncoderParameters jpegParams = new EncoderParameters(1);
EncoderParameter jpegParam = new EncoderParameter(Encoder.Quality, quality);
jpegParams.Param[0] = jpegParam;
using (MemoryStream finalFrameRender = new MemoryStream())
{
bitmap.Save(finalFrameRender, jpegCodec, jpegParams);
// Send frame for websocket delivery
websocket.SendFrame(serviceName, finalFrameRender.ToArray());
// FPS counter
frames++;
}
// Average FPS
avgFPS = frames / (fpsCountTimer.ElapsedMilliseconds / 1000f);
// Timestep - wait to meet our FPS target
if (fpsTimer.ElapsedMilliseconds < mspf)
{
Thread.Sleep((int)(mspf - fpsTimer.ElapsedMilliseconds));
}
}
}
}
/// <summary>
/// 添加文字水印
/// </summary>
/// <param name="oldFilePath">原始图片路径</param>
/// <param name="newFilePath">将要添加水印图片路径</param>
/// <param name="waterPosition">水印位置</param>
/// <param name="waterText">水印内容</param>
public static void CreateWaterText(string oldFilePath, string newFilePath, int waterPosition, string waterText, int quality, string fontname, int fontsize)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(oldFilePath);
Bitmap bmp = new Bitmap(image.Width, image.Height, PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.White);
g.DrawImage(image, 0, 0, image.Width, image.Height);
int _width = bmp.Width;
int _height = bmp.Height;
Font crFont = new Font(fontname, fontsize, FontStyle.Bold, GraphicsUnit.Pixel);
SizeF crSize =g.MeasureString(waterText, crFont);
float xpos = 0;
float ypos = 0;
switch (waterPosition)
{
case 3:
xpos = ((float)_width * (float).99) - (crSize.Width / 2);
ypos = (float)_height * (float).01;
break;
case 2:
xpos = ((float)_width * (float).01) + (crSize.Width / 2);
ypos = ((float)_height * (float).99) - crSize.Height;
break;
case 5:
xpos = ((_width - crSize.Width) / 2) + crSize.Width / 2; //奇怪的表达式
ypos = (_height - crSize.Height) / 2 + crSize.Height / 2;
break;
case 1:
xpos = ((float)_width * (float).01) + (crSize.Width / 2);
ypos = (float)_height * (float).01;
break;
case 4:
default:
xpos = ((float)_width * (float).99) - (crSize.Width / 2);
ypos = ((float)_height * (float).99) - crSize.Height;
break;
}
StringFormat StrFormat = new StringFormat();
StrFormat.Alignment = StringAlignment.Center;
//可设置透明度
SolidBrush semiTransBrush = new SolidBrush(Color.FromArgb(255, 255, 255, 255));
g.DrawString(waterText, crFont, semiTransBrush, xpos, ypos, StrFormat);
try
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici = null;
foreach (ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
{
ici = codec;
}
}
EncoderParameters encoderParams = new EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
bmp.Save(newFilePath, ici, encoderParams);
}
else
{
bmp.Save(newFilePath);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
semiTransBrush.Dispose();
image.Dispose();
bmp.Dispose();
}
}
