public static SizingOptions Parse(string filename)
{
SizingOptions o = new SizingOptions();
string[] arr = filename.Split('.');
string[] dim = arr[0].Split('_');
if (arr.Length != 2 || dim.Length != 11)
{
return(null);
}
int[] values = new int[dim.Length];
for (int i = 0; i < dim.Length; i++)
{
if (!int.TryParse(dim[i], out values[i]))
{
return(null);
}
}
o.sprocketFileID = values[0];
o.width = values[1];
o.height = values[2];
o.padding = values[3];
o.backgroundColor = Color.FromArgb(values[4]);
o.borderColor = Color.FromArgb(values[5]);
o.borderSize = values[6];
o.tileSpacing = values[7];
o.displayType = (Display)values[8];
o.anchor = (CropAnchor)values[9];
o.preventEnlargement = values[10] == 1;
o.SetFilename();
return(o);
}
public void TransmitImage(SizingOptions options)
{
MemoryStream stream = new MemoryStream();
ResizeImage(options, stream);
HttpContext.Current.Response.ContentType = "image/jpeg";
HttpContext.Current.Response.BinaryWrite(stream.ToArray());
HttpContext.Current.Response.End();
}
public void TransmitImage(string filename)
{
SizingOptions options = SizingOptions.Parse(filename);
HttpContext.Current.Response.ContentType = "image/jpeg";
if (WebUtility.RawQueryString == "nocache")
{
ResizeImage(options, HttpContext.Current.Response.OutputStream);
HttpContext.Current.Response.End();
}
else
{
if (!File.Exists(options.PhysicalPath))
{
ResizeImage(options);
}
HttpContext.Current.Response.TransmitFile(options.PhysicalPath);
}
}
public void TransmitRequestedImage()
{
// note: if processing ever gets this far, we definitely don't have a cached version
// of this file, or the ContentCache would have served it up by now.
FileInfo info = new FileInfo(SprocketPath.Physical);
SizingOptions options = SizingOptions.Parse(info.Name);
HttpContext.Current.Response.ContentType = "image/jpeg";
if (WebUtility.RawQueryString == "nocache")
{
ResizeImage(options, HttpContext.Current.Response.OutputStream);
HttpContext.Current.Response.End();
}
else
{
MemoryStream stream = new MemoryStream();
ResizeImage(options, stream);
string path = ContentCache.Store("Sprocket.Web.FileManager.CachedImage." + options.SprocketFileID + "." + options.Filename, null, false, SprocketPath.Value, "image/jpeg", stream);
HttpContext.Current.Response.TransmitFile(path);
}
}
void OnLoadRequestedPath(HandleFlag handled)
{
switch (SprocketPath.Value)
{
case "test":
Response.Write("<form method=\"post\" action=\""
+ WebUtility.BasePath + "test/upload/\" enctype=\"multipart/form-data\">"
+ "<input type=\"file\" size=\"40\" name=\"thefile\" /> <input type=\"submit\" value=\"upload\" />"
+ "</form>"
);
break;
case "test/upload":
HttpPostedFile posted = HttpContext.Current.Request.Files[0];
SprocketFile file = new SprocketFile(Security.SecurityProvider.ClientSpaceID, posted, "Test Image", "A test image.");
FileManager.DataLayer.Store(file);
WebUtility.Redirect("test/show/?" + file.SprocketFileID);
break;
case "test/show":
long id = long.Parse(WebUtility.RawQueryString);
SizingOptions options = new SizingOptions(320, 180, 10, Color.Black, Color.CadetBlue, 2, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(200, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(200, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Stretch, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 10, Color.White, Color.FromArgb(240, 240, 240), 1, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Top, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Top, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Bottom, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Bottom, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Left, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Left, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Right, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Right, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.Display.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(400, 300, 10, Color.Black, Color.CadetBlue, 0, 10, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" align=\"top\" /> ");
break;
default:
if (SprocketPath.Value.EndsWith(".jpg") && SprocketPath.Value.StartsWith("test/image/"))
{
FileManager.Instance.TransmitRequestedImage();
break;
}
return;
}
handled.Set();
}
public void ResizeImage(SizingOptions options)
{
ResizeImage(options, null);
}
public void ResizeImage(SizingOptions options, Stream outStream)
{
SprocketFile file = dataLayer.SelectSprocketFile(options.SprocketFileID, true);
Image sourceImage = options.Image == null ? Image.FromStream(new MemoryStream(file.FileData)) : options.Image;
Size imageSize;
if (options.DisplayType == SizingOptions.Display.Constrain)
{
int maxWidth = 0, maxHeight = 0;
if (options.Width > 0)
maxWidth = options.Width - options.Padding * 2 - options.BorderSize * 2;
if (options.Height > 0)
maxHeight = options.Height - options.Padding * 2 - options.BorderSize * 2;
if (maxWidth == 0 && maxHeight == 0)
throw new Exception("Can't resize image. No dimensions were specified.");
float srcRatio = (float)sourceImage.Width / (float)sourceImage.Height;
if (maxWidth == 0)
imageSize = new Size((int)((float)maxHeight * srcRatio) + options.BorderSize * 2 + options.Padding * 2,
maxHeight + options.BorderSize * 2 + options.Padding * 2);
else if (maxHeight == 0)
imageSize = new Size(maxWidth + options.BorderSize * 2 + options.Padding * 2,
(int)((float)maxWidth / srcRatio) + options.BorderSize * 2 + options.Padding * 2);
else
{
float destRatio = (float)maxWidth / (float)maxHeight;
if (destRatio < srcRatio) // landscape; keep width, set height
imageSize = new Size(maxWidth + options.BorderSize * 2 + options.Padding * 2,
(int)((float)maxWidth / srcRatio) + options.BorderSize * 2 + options.Padding * 2);
else // portrait; keep height, set width
imageSize = new Size((int)((float)maxHeight * srcRatio) + options.BorderSize * 2 + options.Padding * 2,
maxHeight + options.BorderSize * 2 + options.Padding * 2);
}
}
else
{
imageSize = new Size(options.Width, options.Height);
}
if (options.PreventEnlargement)
{
if (imageSize.Width - options.Padding * 2 - options.BorderSize * 2 > sourceImage.Width)
imageSize.Width = sourceImage.Width + options.Padding * 2 + options.BorderSize * 2;
if (imageSize.Height - options.Padding * 2 - options.BorderSize * 2 > sourceImage.Height)
imageSize.Height = sourceImage.Height + options.Padding * 2 + options.BorderSize * 2;
}
using (Image finalImage = new Bitmap(imageSize.Width, imageSize.Height))
{
using (Graphics gfx = Graphics.FromImage(finalImage))
{
// set the rendering defaults
gfx.CompositingQuality = CompositingQuality.HighQuality;
gfx.SmoothingMode = SmoothingMode.HighQuality;
gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
// set colours and pens
Brush fill = new SolidBrush(options.BackgroundColor);
Pen pen = new Pen(options.BorderColor, options.BorderSize);
pen.Alignment = PenAlignment.Inset;
// fill the background
gfx.FillRectangle(fill, 0, 0, finalImage.Width, finalImage.Height);
// calculate the area in which we can paint the image
Rectangle clientRect = new Rectangle(
options.BorderSize + options.Padding, options.BorderSize + options.Padding,
finalImage.Width - options.BorderSize * 2 - options.Padding * 2,
finalImage.Height - options.BorderSize * 2 - options.Padding * 2);
// work out the letterboxing ratios (if the inner ratio is greater, the photo is
// proportionally wider than the container, i.e. standard widescreen letterbox)
float containerRatio = (float)clientRect.Width / (float)clientRect.Height;
float imgRatio = (float)sourceImage.Width / (float)sourceImage.Height;
bool landscape = imgRatio > containerRatio;
Rectangle destRect = new Rectangle(clientRect.X, clientRect.Y, clientRect.Width, clientRect.Height);
switch (options.DisplayType)
{
case SizingOptions.Display.Letterbox:
if (landscape)
{
int h = (int)((float)destRect.Width / imgRatio);
destRect.Y += (destRect.Height - h) / 2;
destRect.Height = h;
}
else
{
int w = (int)((float)destRect.Height * imgRatio);
destRect.X += (destRect.Width - w) / 2;
destRect.Width = w;
}
gfx.DrawImage(sourceImage, destRect);
break;
case SizingOptions.Display.Constrain:
case SizingOptions.Display.Stretch:
gfx.DrawImage(sourceImage, destRect);
break;
case SizingOptions.Display.Center:
gfx.DrawImage(sourceImage, destRect, new Rectangle(
(sourceImage.Width - destRect.Width) / 2, (sourceImage.Height - destRect.Height) / 2,
destRect.Width, destRect.Height), GraphicsUnit.Pixel);
break;
case SizingOptions.Display.Tile:
int tileX, tileY = clientRect.Y;
do
{
tileX = clientRect.X;
do
{
destRect = new Rectangle(tileX, tileY,
tileX + sourceImage.Width > clientRect.Right ? clientRect.Right - tileX : sourceImage.Width,
tileY + sourceImage.Height > clientRect.Bottom ? clientRect.Bottom - tileY : sourceImage.Height);
gfx.DrawImageUnscaledAndClipped(sourceImage, destRect);
tileX += sourceImage.Width + options.TileSpacing;
} while (tileX < clientRect.Right);
tileY += sourceImage.Height + options.TileSpacing;
} while (tileY < clientRect.Bottom);
break;
case SizingOptions.Display.Crop:
switch (options.Anchor)
{
case SizingOptions.CropAnchor.Top:
using (Bitmap bmp = new Bitmap(destRect.Width, (int)((float)destRect.Width / imgRatio)))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Bottom:
using (Bitmap bmp = new Bitmap(destRect.Width, (int)((float)destRect.Width / imgRatio)))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, bmp.Height - destRect.Height, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Left:
using (Bitmap bmp = new Bitmap((int)((float)destRect.Height * imgRatio), destRect.Height))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Right:
using (Bitmap bmp = new Bitmap((int)((float)destRect.Height * imgRatio), destRect.Height))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(bmp.Width - destRect.Width, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Center:
int midW, midH;
if (landscape)
{
midH = destRect.Height;
midW = (int)((float)destRect.Height * imgRatio);
}
else
{
midW = destRect.Width;
midH = (int)((float)destRect.Width / imgRatio);
}
using (Bitmap bmp = new Bitmap(midW, midH))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
if (landscape)
gfx.DrawImage(bmp, destRect, new Rectangle((bmp.Width - destRect.Width) / 2, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
else
gfx.DrawImage(bmp, destRect, new Rectangle(0, (bmp.Height - destRect.Height) / 2, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
default:
break;
}
break;
default:
break;
}
// draw the border last to ensure it doesn't get obscured;
if (options.BorderSize > 0)
gfx.DrawRectangle(pen, 0, 0, finalImage.Width - 1, finalImage.Height - 1);
// find the jpeg encoder
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = null;
for (int i = 0; i < encoders.Length; i++)
if (encoders[i].MimeType == "image/jpeg")
{
encoder = encoders[i];
break;
}
if (encoder == null)
throw new SprocketException("Can't create a thumbnail because no JPEG encoder exists.");
EncoderParameters prms = new EncoderParameters(1);
// set the jpeg quality
prms.Param[0] = new EncoderParameter(Encoder.Quality, options.JpegQuality);
if (outStream != null)
{
finalImage.Save(outStream, encoder, prms);
if(outStream is MemoryStream)
outStream.Seek(0, SeekOrigin.Begin);
}
else
{
// make sure the cache directory exists
DirectoryInfo info = new FileInfo(options.PhysicalPath).Directory;
if (!info.Exists)
info.Create();
// save the image
finalImage.Save(options.PhysicalPath, encoder, prms);
}
}
}
if (options.Image == null)
sourceImage.Dispose();
}
public static SizingOptions Parse(string filename)
{
SizingOptions o = new SizingOptions();
string[] arr = filename.Split('.');
string[] dim = arr[0].Split('_');
if (arr.Length != 2 || dim.Length != 11)
return null;
int[] values = new int[dim.Length];
for (int i = 0; i < dim.Length; i++)
if (!int.TryParse(dim[i], out values[i]))
return null;
o.sprocketFileID = values[0];
o.width = values[1];
o.height = values[2];
o.padding = values[3];
o.backgroundColor = Color.FromArgb(values[4]);
o.borderColor = Color.FromArgb(values[5]);
o.borderSize = values[6];
o.tileSpacing = values[7];
o.displayType = (Display)values[8];
o.anchor = (CropAnchor)values[9];
o.preventEnlargement = values[10] == 1;
o.SetFilename();
return o;
}
void OnLoadRequestedPath(HandleFlag handled)
{
switch (SprocketPath.Value)
{
case "test":
Response.Write("<form method=\"post\" action=\""
+ WebUtility.BasePath + "test/upload/\" enctype=\"multipart/form-data\">"
+ "<input type=\"file\" size=\"40\" name=\"thefile\" /> <input type=\"submit\" value=\"upload\" />"
+ "</form>"
);
break;
case "test/upload":
HttpPostedFile posted = HttpContext.Current.Request.Files[0];
SprocketFile file = new SprocketFile(Security.SecurityProvider.ClientSpaceID, posted, "Test Image", "A test image.");
FileManager.DataLayer.Store(file);
WebUtility.Redirect("test/show/?" + file.SprocketFileID);
break;
case "test/show":
long id = long.Parse(WebUtility.RawQueryString);
SizingOptions options = new SizingOptions(320, 180, 10, Color.Black, Color.CadetBlue, 2, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(200, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(200, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Stretch, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 200, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 10, Color.White, Color.FromArgb(240, 240, 240), 1, SizingOptions.Display.Letterbox, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Top, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Top, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Bottom, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Bottom, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Left, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Left, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.CropAnchor.Right, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.CropAnchor.Right, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 0, Color.Black, Color.CadetBlue, 0, SizingOptions.Display.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(100, 100, 15, Color.Black, Color.Red, 5, SizingOptions.Display.Center, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" /> ");
options = new SizingOptions(400, 300, 10, Color.Black, Color.CadetBlue, 0, 10, id);
Response.Write("<img src=\"" + WebUtility.BasePath + "test/image/" + options.Filename + "?nocache\" hspace=\"5\" vspace=\"5\" align=\"top\" /> ");
break;
default:
if (SprocketPath.Value.EndsWith(".jpg") && SprocketPath.Value.StartsWith("test/image/"))
{
FileManager.Instance.TransmitRequestedImage();
break;
}
return;
}
handled.Set();
}
public void ResizeImage(SizingOptions options, Stream outStream)
{
SprocketFile file = dataLayer.SelectSprocketFile(options.SprocketFileID, true);
Image sourceImage = options.Image == null?Image.FromStream(new MemoryStream(file.FileData)) : options.Image;
Size imageSize;
if (options.DisplayType == SizingOptions.Display.Constrain)
{
int maxWidth = 0, maxHeight = 0;
if (options.Width > 0)
{
maxWidth = options.Width - options.Padding * 2 - options.BorderSize * 2;
}
if (options.Height > 0)
{
maxHeight = options.Height - options.Padding * 2 - options.BorderSize * 2;
}
if (maxWidth == 0 && maxHeight == 0)
{
throw new Exception("Can't resize image. No dimensions were specified.");
}
float srcRatio = (float)sourceImage.Width / (float)sourceImage.Height;
if (maxWidth == 0)
{
imageSize = new Size((int)((float)maxHeight * srcRatio) + options.BorderSize * 2 + options.Padding * 2,
maxHeight + options.BorderSize * 2 + options.Padding * 2);
}
else if (maxHeight == 0)
{
imageSize = new Size(maxWidth + options.BorderSize * 2 + options.Padding * 2,
(int)((float)maxWidth / srcRatio) + options.BorderSize * 2 + options.Padding * 2);
}
else
{
float destRatio = (float)maxWidth / (float)maxHeight;
if (destRatio < srcRatio) // landscape; keep width, set height
{
imageSize = new Size(maxWidth + options.BorderSize * 2 + options.Padding * 2,
(int)((float)maxWidth / srcRatio) + options.BorderSize * 2 + options.Padding * 2);
}
else // portrait; keep height, set width
{
imageSize = new Size((int)((float)maxHeight * srcRatio) + options.BorderSize * 2 + options.Padding * 2,
maxHeight + options.BorderSize * 2 + options.Padding * 2);
}
}
}
else
{
imageSize = new Size(options.Width, options.Height);
}
if (options.PreventEnlargement)
{
if (imageSize.Width - options.Padding * 2 - options.BorderSize * 2 > sourceImage.Width)
{
imageSize.Width = sourceImage.Width + options.Padding * 2 + options.BorderSize * 2;
}
if (imageSize.Height - options.Padding * 2 - options.BorderSize * 2 > sourceImage.Height)
{
imageSize.Height = sourceImage.Height + options.Padding * 2 + options.BorderSize * 2;
}
}
using (Image finalImage = new Bitmap(imageSize.Width, imageSize.Height))
{
using (Graphics gfx = Graphics.FromImage(finalImage))
{
// set the rendering defaults
gfx.CompositingQuality = CompositingQuality.HighQuality;
gfx.SmoothingMode = SmoothingMode.HighQuality;
gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
// set colours and pens
Brush fill = new SolidBrush(options.BackgroundColor);
Pen pen = new Pen(options.BorderColor, options.BorderSize);
pen.Alignment = PenAlignment.Inset;
// fill the background
gfx.FillRectangle(fill, 0, 0, finalImage.Width, finalImage.Height);
// calculate the area in which we can paint the image
Rectangle clientRect = new Rectangle(
options.BorderSize + options.Padding, options.BorderSize + options.Padding,
finalImage.Width - options.BorderSize * 2 - options.Padding * 2,
finalImage.Height - options.BorderSize * 2 - options.Padding * 2);
// work out the letterboxing ratios (if the inner ratio is greater, the photo is
// proportionally wider than the container, i.e. standard widescreen letterbox)
float containerRatio = (float)clientRect.Width / (float)clientRect.Height;
float imgRatio = (float)sourceImage.Width / (float)sourceImage.Height;
bool landscape = imgRatio > containerRatio;
Rectangle destRect = new Rectangle(clientRect.X, clientRect.Y, clientRect.Width, clientRect.Height);
switch (options.DisplayType)
{
case SizingOptions.Display.Letterbox:
if (landscape)
{
int h = (int)((float)destRect.Width / imgRatio);
destRect.Y += (destRect.Height - h) / 2;
destRect.Height = h;
}
else
{
int w = (int)((float)destRect.Height * imgRatio);
destRect.X += (destRect.Width - w) / 2;
destRect.Width = w;
}
gfx.DrawImage(sourceImage, destRect);
break;
case SizingOptions.Display.Constrain:
case SizingOptions.Display.Stretch:
gfx.DrawImage(sourceImage, destRect);
break;
case SizingOptions.Display.Center:
gfx.DrawImage(sourceImage, destRect, new Rectangle(
(sourceImage.Width - destRect.Width) / 2, (sourceImage.Height - destRect.Height) / 2,
destRect.Width, destRect.Height), GraphicsUnit.Pixel);
break;
case SizingOptions.Display.Tile:
int tileX, tileY = clientRect.Y;
do
{
tileX = clientRect.X;
do
{
destRect = new Rectangle(tileX, tileY,
tileX + sourceImage.Width > clientRect.Right ? clientRect.Right - tileX : sourceImage.Width,
tileY + sourceImage.Height > clientRect.Bottom ? clientRect.Bottom - tileY : sourceImage.Height);
gfx.DrawImageUnscaledAndClipped(sourceImage, destRect);
tileX += sourceImage.Width + options.TileSpacing;
} while (tileX < clientRect.Right);
tileY += sourceImage.Height + options.TileSpacing;
} while (tileY < clientRect.Bottom);
break;
case SizingOptions.Display.Crop:
switch (options.Anchor)
{
case SizingOptions.CropAnchor.Top:
using (Bitmap bmp = new Bitmap(destRect.Width, (int)((float)destRect.Width / imgRatio)))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Bottom:
using (Bitmap bmp = new Bitmap(destRect.Width, (int)((float)destRect.Width / imgRatio)))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, bmp.Height - destRect.Height, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Left:
using (Bitmap bmp = new Bitmap((int)((float)destRect.Height * imgRatio), destRect.Height))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(0, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Right:
using (Bitmap bmp = new Bitmap((int)((float)destRect.Height * imgRatio), destRect.Height))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
gfx.DrawImage(bmp, destRect, new Rectangle(bmp.Width - destRect.Width, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
break;
case SizingOptions.CropAnchor.Center:
int midW, midH;
if (landscape)
{
midH = destRect.Height;
midW = (int)((float)destRect.Height * imgRatio);
}
else
{
midW = destRect.Width;
midH = (int)((float)destRect.Width / imgRatio);
}
using (Bitmap bmp = new Bitmap(midW, midH))
{
using (Graphics gfx2 = Graphics.FromImage(bmp))
{
gfx2.InterpolationMode = InterpolationMode.HighQualityBicubic;
gfx2.DrawImage(sourceImage, 0, 0, bmp.Width, bmp.Height);
}
if (landscape)
{
gfx.DrawImage(bmp, destRect, new Rectangle((bmp.Width - destRect.Width) / 2, 0, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
else
{
gfx.DrawImage(bmp, destRect, new Rectangle(0, (bmp.Height - destRect.Height) / 2, destRect.Width, destRect.Height), GraphicsUnit.Pixel);
}
}
break;
default:
break;
}
break;
default:
break;
}
// draw the border last to ensure it doesn't get obscured;
if (options.BorderSize > 0)
{
gfx.DrawRectangle(pen, 0, 0, finalImage.Width - 1, finalImage.Height - 1);
}
// find the jpeg encoder
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo encoder = null;
for (int i = 0; i < encoders.Length; i++)
{
if (encoders[i].MimeType == "image/jpeg")
{
encoder = encoders[i];
break;
}
}
if (encoder == null)
{
throw new SprocketException("Can't create a thumbnail because no JPEG encoder exists.");
}
EncoderParameters prms = new EncoderParameters(1);
// set the jpeg quality
prms.Param[0] = new EncoderParameter(Encoder.Quality, options.JpegQuality);
if (outStream != null)
{
finalImage.Save(outStream, encoder, prms);
if (outStream is MemoryStream)
{
outStream.Seek(0, SeekOrigin.Begin);
}
}
else
{
// make sure the cache directory exists
DirectoryInfo info = new FileInfo(options.PhysicalPath).Directory;
if (!info.Exists)
{
info.Create();
}
// save the image
finalImage.Save(options.PhysicalPath, encoder, prms);
}
}
}
if (options.Image == null)
{
sourceImage.Dispose();
}
}
public void ResizeImage(SizingOptions options)
{
ResizeImage(options, null);
}
public void TransmitImage(SizingOptions options)
{
MemoryStream stream = new MemoryStream();
ResizeImage(options, stream);
HttpContext.Current.Response.ContentType = "image/jpeg";
HttpContext.Current.Response.BinaryWrite(stream.ToArray());
HttpContext.Current.Response.End();
}
public Result ReadAdminField(out IEditFieldData efdata)
{
ImageEditFieldData data = new ImageEditFieldData();
SprocketFile file = null;
if (HttpContext.Current.Request.Files[fieldName] != null)
if (HttpContext.Current.Request.Files[fieldName].ContentLength > 0)
{
file = new SprocketFile(SecurityProvider.ClientSpaceID, HttpContext.Current.Request.Files[fieldName], "", "");
Image img;
Result r = file.ValidateImageData(out img);
if (!r.Succeeded)
{
efdata = new ImageEditFieldData();
return new Result("The image selected could not be loaded. The system reported back the following error: " + r.Message);
}
if (maxwidth > 0 || maxheight > 0)
{
SizingOptions options = new SizingOptions(maxwidth, maxheight, SizingOptions.Display.Constrain, 0);
options.Image = img;
MemoryStream stream = new MemoryStream();
FileManager.FileManager.Instance.ResizeImage(options, stream);
file.FileData = stream.ToArray();
}
}
bool deleted = HttpContext.Current.Request.Form["deleteimage_" + fieldName] != null;
long existing;
if (!long.TryParse(HttpContext.Current.Request.Form["existingimage_" + fieldName], out existing))
existing = 0;
if (deleted)
data.SprocketFileID = 0;
else if (file != null)
data.SprocketFile = file;
else
data.SprocketFileID = existing;
efdata = data;
return new Result();
}
