/// <summary>
/// Set brightness for the image
/// </summary>
/// <param name="image">input bitmap</param>
/// <param name="value">value from -255 to 255</param>
/// <returns></returns>
public static Bitmap SetBrightness(Bitmap image, int value)
{
var tempBitmap = image;
var finalValue = value / 255.0f;
var newBitmap = new Bitmap(tempBitmap.Width, tempBitmap.Height);
var newGraphics = Graphics.FromImage(newBitmap);
float[][] floatColorMatrix =
{
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, 1, 0 },
new[] { finalValue, finalValue, finalValue, 1, 1 }
};
var newColorMatrix = new System.Drawing.Imaging.ColorMatrix(floatColorMatrix);
var attributes = new System.Drawing.Imaging.ImageAttributes();
attributes.SetColorMatrix(newColorMatrix);
newGraphics.DrawImage(tempBitmap, new System.Drawing.Rectangle(0, 0, tempBitmap.Width, tempBitmap.Height), 0, 0, tempBitmap.Width, tempBitmap.Height, System.Drawing.GraphicsUnit.Pixel, attributes);
attributes.Dispose();
newGraphics.Dispose();
return(newBitmap);
}
internal void DrawPlusMinus(Graphics g)
{
if (!IsInATreeListView)
{
return;
}
if (TreeListView._updating)
{
return;
}
Debug.Assert(!TreeListView.InvokeRequired);
if (Items.Count == 0 || TreeListView.Columns.Count == 0)
{
return;
}
System.Drawing.Imaging.ImageAttributes attr = new System.Drawing.Imaging.ImageAttributes();
attr.SetColorKey(Color.Transparent, Color.Transparent);
if (TreeListView.Columns[0].Width > (Level + 1) * SystemInformation.SmallIconSize.Width)
{
g.DrawImage(
TreeListView.plusMinusImageList.Images[IsExpanded ? 1 : 0],
GetBounds(TreeListViewItemBoundsPortion.PlusMinus),
0, 0, SystemInformation.SmallIconSize.Width, SystemInformation.SmallIconSize.Height,
GraphicsUnit.Pixel, attr);
}
attr.Dispose();
}
//this function is not entirely from me:
public Bitmap AdjustBrightnessMatrix(Bitmap img, float RedMul, float GreenMul, float BlueMul)
{
//if (value == 0) { return img; } // No change, so just return
//System.Drawing.Imaging.ColorMap cmm = new System.Drawing.Imaging.ColorMap();
//float sb = (float)value / 255F;
//float d = 1f / sb;
float[][] colorMatrixElements =
{
new float[] { RedMul, 0, 0, 0, 0 }, //new float[] {1, 0, 0, 0, 0},
new float[] { 0, GreenMul, 0, 0, 0 }, //new float[] {0, 1, 0, 0, 0},
new float[] { 0, 0, BlueMul, 0, 0 }, //new float[] {0, 0, 1, 0, 0},
new float[] { 0, 0, 0, 1, 0 }, //new float[] {0, 0, 0, 1, 0},
new float[] { 0, 0, 0, 1, 0 } //new float[] {sb, sb, sb, 1, 1}
};
System.Drawing.Imaging.ColorMatrix cm = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
System.Drawing.Imaging.ImageAttributes imgattr = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Rectangle rc = new System.Drawing.Rectangle(0, 0, img.Width, img.Height);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(img);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
imgattr.SetColorMatrix(cm);
g.DrawImage(img, rc, 0, 0, img.Width, img.Height, System.Drawing.GraphicsUnit.Pixel, imgattr);
imgattr.Dispose();
g.Dispose();
return(img);
}
// 添加图片水印
public static string addWaterMark(string filepath, string fileName)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(filepath + fileName);
Bitmap b = new Bitmap(image.Width, image.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(b);
g.Clear(Color.White);
g.DrawImage(image, 0, 0, image.Width, image.Height);
Image watermark = new Bitmap(AppDomain.CurrentDomain.BaseDirectory + @"Content/image/logo.png");
System.Drawing.Imaging.ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMap colorMap = new System.Drawing.Imaging.ColorMap();
colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
System.Drawing.Imaging.ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, System.Drawing.Imaging.ColorAdjustType.Bitmap);
float[][] colorMatrixElements =
{
new float[] { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 1.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, 0.0f, 0.3f, 0.0f },
new float[] { 0.0f, 0.0f, 0.0f, 0.0f, 1.0f }
};
System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, System.Drawing.Imaging.ColorMatrixFlag.Default, System.Drawing.Imaging.ColorAdjustType.Bitmap);
int xpos = 0;
int ypos = 0;
xpos = ((image.Width - watermark.Width) / 2);
ypos = (image.Height - watermark.Height) / 2;
g.DrawImage(watermark, new Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
watermark.Dispose();
imageAttributes.Dispose();
//保存加水印过后的图片,删除原始图片
fileName = DateTime.Now.ToFileTime() + new Random().Next(100, 999) + System.IO.Path.GetExtension(fileName);
b.Save(filepath + fileName);
b.Dispose();
image.Dispose();
if (System.IO.File.Exists(filepath))
{
System.IO.File.Delete(filepath);
}
return(fileName);
}
private void fixDisplay()
{
Bitmap b = new Bitmap(mImage.Width, mImage.Height);
Graphics g = Graphics.FromImage(b);
System.Drawing.Imaging.ColorMatrix mCM = new System.Drawing.Imaging.ColorMatrix();
// w
mCM.Matrix44 = 1.00f;
if (!rChk.Checked)
{
mCM.Matrix00 = 0.00f;
}
if (!gChk.Checked)
{
mCM.Matrix11 = 0.00f;
}
if (!bChk.Checked)
{
mCM.Matrix22 = 0.00f;
}
//turn alpha off by adding 1 to alpha value
if (!aChk.Checked)
{
mCM.Matrix43 = 1.00f;
invertAlpha.Enabled = false;
}
else
{
invertAlpha.Enabled = true;
}
System.Drawing.Imaging.ImageAttributes attr = new System.Drawing.Imaging.ImageAttributes();
attr.SetColorMatrix(mCM);
g.DrawImage(mImage, new Rectangle(0, 0, mImage.Width, mImage.Height),
0, 0, mImage.Width, mImage.Height,
System.Drawing.GraphicsUnit.Pixel,
attr);
attr.Dispose();
g.Dispose();
pictureBox1.Image = b;
}
System.Drawing.Bitmap AdjustContrastBrightnessMatrix(System.Drawing.Bitmap img, int cont, int brite)
{
if (cont == 0 && brite == 0) // No change, so just return
{
return(img);
}
float c = (float)(100 + cont) / 100F;
float t = (1F - c) / 2F;
float sb = (float)brite / 255F;
float sb_help = 0;
if (sb != 0)
{
sb_help = 1F;
}
float[][] colorMatrixElements =
{
new float[] { c, 0, 0, 0, 0 },
new float[] { 0, c, 0, 0, 0 },
new float[] { 0, 0, c, 0, 0 },
new float[] { 0, 0, 0, 1, 0 },
new float[] { t + sb, t + sb, t + sb, sb_help, 1 }
};
System.Drawing.Imaging.ColorMatrix cm = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
System.Drawing.Imaging.ImageAttributes imgattr = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Rectangle rc = new System.Drawing.Rectangle(0, 0, img.Width, img.Height);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(img);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
imgattr.SetColorMatrix(cm);
g.DrawImage(img, rc, 0, 0, img.Width, img.Height, System.Drawing.GraphicsUnit.Pixel, imgattr);
imgattr.Dispose();
g.Dispose();
return(img);
}
private Image GetDimIcon(Image icon)
{
try
{
Bitmap original = new Bitmap(icon);
Bitmap bmp = new Bitmap(original.Width, original.Height);
Graphics g = Graphics.FromImage(bmp);
System.Drawing.Imaging.ImageAttributes ia = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMatrix cm = new System.Drawing.Imaging.ColorMatrix();
cm.Matrix33 = 0.5f;
ia.SetColorMatrix(cm);
g.DrawImage(original, new Rectangle(0, 0, original.Width, original.Height), 0, 0,
original.Width, original.Height, GraphicsUnit.Pixel, ia);
g.Dispose();
ia.Dispose();
original.Dispose();
return(bmp);
}
catch
{
return(null);
}
}
/// <summary>
/// 加图片水印
/// </summary>
/// <param name="filename">文件名</param>
/// <param name="watermarkFilename">水印文件名</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">是否是高质量图片 取值范围0--100</param>
/// <param name="watermarkTransparency">图片水印透明度 取值范围1--10 (10为不透明)</param>
public static void AddImageSignPic(string Path, string filename, string watermarkFilename, int watermarkStatus, int quality, int watermarkTransparency)
{
System.Drawing.Image img = System.Drawing.Image.FromFile(Path);
System.Drawing.Graphics g = System.Drawing.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;
System.Drawing.Image watermark = new System.Drawing.Bitmap(watermarkFilename);
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
{
return;
}
System.Drawing.Imaging.ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMap colorMap = new System.Drawing.Imaging.ColorMap();
colorMap.OldColor = System.Drawing.Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = System.Drawing.Color.FromArgb(0, 0, 0, 0);
System.Drawing.Imaging.ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, System.Drawing.Imaging.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}
};
System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, System.Drawing.Imaging.ColorMatrixFlag.Default, System.Drawing.Imaging.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 System.Drawing.Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, System.Drawing.GraphicsUnit.Pixel, imageAttributes);
System.Drawing.Imaging.ImageCodecInfo[] codecs = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders();
System.Drawing.Imaging.ImageCodecInfo ici = null;
foreach (System.Drawing.Imaging.ImageCodecInfo codec in codecs)
{
//if (codec.MimeType.IndexOf("jpeg") > -1)
if (codec.MimeType.Contains("jpeg"))
{
ici = codec;
}
}
System.Drawing.Imaging.EncoderParameters encoderParams = new System.Drawing.Imaging.EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
System.Drawing.Imaging.EncoderParameter encoderParam = new System.Drawing.Imaging.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>
/// 加图片水印
/// </summary>
/// <param name="filename">文件名</param>
/// <param name="watermarkFilename">水印文件名</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">是否是高质量图片 取值范围0--100</param>
/// <param name="watermarkTransparency">图片水印透明度 取值范围1--10 (10为不透明)</param>
public static void AddImageSignPic(string Path, string filename, string watermarkFilename, int watermarkStatus, int quality, int watermarkTransparency)
{
System.Drawing.Image img = System.Drawing.Image.FromFile(Path);
System.Drawing.Graphics g = System.Drawing.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;
System.Drawing.Image watermark = new System.Drawing.Bitmap(watermarkFilename);
if (watermark.Height >= img.Height || watermark.Width >= img.Width)
{
return;
}
System.Drawing.Imaging.ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMap colorMap = new System.Drawing.Imaging.ColorMap();
colorMap.OldColor = System.Drawing.Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = System.Drawing.Color.FromArgb(0, 0, 0, 0);
System.Drawing.Imaging.ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, System.Drawing.Imaging.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 }
};
System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, System.Drawing.Imaging.ColorMatrixFlag.Default, System.Drawing.Imaging.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 System.Drawing.Rectangle(xpos, ypos, watermark.Width, watermark.Height), 0, 0, watermark.Width, watermark.Height, System.Drawing.GraphicsUnit.Pixel, imageAttributes);
System.Drawing.Imaging.ImageCodecInfo[] codecs = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders();
System.Drawing.Imaging.ImageCodecInfo ici = null;
foreach (System.Drawing.Imaging.ImageCodecInfo codec in codecs)
{
//if (codec.MimeType.IndexOf("jpeg") > -1)
if (codec.MimeType.Contains("jpeg"))
{
ici = codec;
}
}
System.Drawing.Imaging.EncoderParameters encoderParams = new System.Drawing.Imaging.EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
System.Drawing.Imaging.EncoderParameter encoderParam = new System.Drawing.Imaging.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> Dispose of control </summary>
public override void Dispose()
{
base.Dispose();
drawnImageAttributesEnabled?.Dispose();
drawnImageAttributesDisabled?.Dispose();
}
/// <summary>
/// 在图片上生成图片水印
/// </summary>
/// <param name="sourcePath">原图片路径</param>
/// <param name="targetPath">另存为路径</param>
/// <param name="waterMarkFilePath">水印图片路径</param>
/// <param name="positionType">图片水印位置:UL，UM ， UR ， ML ， MM ， MR ， BL ， BM ， BR ，CUSTORM 为自定义.</param>
/// <param name="quality">是否是高质量图片 取值范围0--100</param>
/// <param name="watermarkTransparency">图片水印透明度 取值范围1--10 (10为不透明)</param>
/// <returns></returns>
public static bool PictureWatermark(string sourcePath, string targetPath, string waterMarkFilePath, PicWaterMarkPosition positionType, int quality, int watermarkTransparency)
{
System.Drawing.Image img = System.Drawing.Image.FromFile(sourcePath);
System.Drawing.Bitmap outPut = new System.Drawing.Bitmap(img);
try
{
#region using
using (Graphics g = Graphics.FromImage(outPut))
{
//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;
System.Drawing.Image markImg = new System.Drawing.Bitmap(waterMarkFilePath);
if (markImg.Height >= img.Height || markImg.Width >= img.Width)
{
return false;
}
System.Drawing.Imaging.ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes();
System.Drawing.Imaging.ColorMap colorMap = new System.Drawing.Imaging.ColorMap();
colorMap.OldColor = System.Drawing.Color.FromArgb(255, 0, 255, 0);
colorMap.NewColor = System.Drawing.Color.FromArgb(0, 0, 0, 0);
System.Drawing.Imaging.ColorMap[] remapTable = { colorMap };
imageAttributes.SetRemapTable(remapTable, System.Drawing.Imaging.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}
};
System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, System.Drawing.Imaging.ColorMatrixFlag.Default, System.Drawing.Imaging.ColorAdjustType.Bitmap);
int xpos = 0;
int ypos = 0;
#region position
switch (positionType)
{
case PicWaterMarkPosition.UL:
xpos = (int)(img.Width * (float).01);
ypos = (int)(img.Height * (float).01);
break;
case PicWaterMarkPosition.UM:
xpos = (int)((img.Width * (float).50) - (markImg.Width / 2));
ypos = (int)(img.Height * (float).01);
break;
case PicWaterMarkPosition.UR:
xpos = (int)((img.Width * (float).99) - (markImg.Width));
ypos = (int)(img.Height * (float).01);
break;
case PicWaterMarkPosition.ML:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).50) - (markImg.Height / 2));
break;
case PicWaterMarkPosition.MM:
xpos = (int)((img.Width * (float).50) - (markImg.Width / 2));
ypos = (int)((img.Height * (float).50) - (markImg.Height / 2));
break;
case PicWaterMarkPosition.MR:
xpos = (int)((img.Width * (float).99) - (markImg.Width));
ypos = (int)((img.Height * (float).50) - (markImg.Height / 2));
break;
case PicWaterMarkPosition.BL:
xpos = (int)(img.Width * (float).01);
ypos = (int)((img.Height * (float).99) - markImg.Height);
break;
case PicWaterMarkPosition.BM:
xpos = (int)((img.Width * (float).50) - (markImg.Width / 2));
ypos = (int)((img.Height * (float).99) - markImg.Height);
break;
case PicWaterMarkPosition.BR:
xpos = (int)((img.Width * (float).99) - (markImg.Width));
ypos = (int)((img.Height * (float).99) - markImg.Height);
break;
}
#endregion position
g.DrawImage(markImg, new System.Drawing.Rectangle(xpos, ypos, markImg.Width, markImg.Height), 0, 0, markImg.Width, markImg.Height, System.Drawing.GraphicsUnit.Pixel, imageAttributes);
System.Drawing.Imaging.ImageCodecInfo[] codecs = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders();
System.Drawing.Imaging.ImageCodecInfo ici = null;
foreach (System.Drawing.Imaging.ImageCodecInfo codec in codecs)
{
if (codec.MimeType.IndexOf("jpeg") > -1)
{
ici = codec;
}
}
System.Drawing.Imaging.EncoderParameters encoderParams = new System.Drawing.Imaging.EncoderParameters();
long[] qualityParam = new long[1];
if (quality < 0 || quality > 100)
{
quality = 80;
}
qualityParam[0] = quality;
System.Drawing.Imaging.EncoderParameter encoderParam = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[0] = encoderParam;
if (ici != null)
{
outPut.Save(targetPath, ici, encoderParams);
}
else
{
outPut.Save(targetPath);
}
g.Dispose();
markImg.Dispose();
imageAttributes.Dispose();
}
#endregion using
}
catch (Exception)
{
return false;
}
finally
{
if (outPut != null)
{
outPut.Dispose();
}
if (img != null)
{
img.Dispose();
}
}
return true;
}
