Inheritance diagram for ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin:

[legend]

Collaboration diagram for ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin:

[legend]

Public Types
enum	FilterType { None = 10, Prewitt = 0, V1 = 1, VSquare = 2, Sobel = 3, Laplacian = 4 }

enum	OutputType { CAIR = 0, Grayscale = 1, Edge = 2, VerticalEnergy = 3, HorizontalEnergy = 4, Removal = 5, CAIR_HD = 6 }

enum	EnergyType { Backward = 0, Forward = 1 }

Public Member Functions
IEnumerable< string >	GetSupportedQuerystringKeys ()
	If the plugin reads any values from the querystring, the names of the keys should be specified here. This information is required so that the HttpModule knows when to handle an image request. More...

IPlugin	Install (Configuration.Config c)

bool	Uninstall (Configuration.Config c)

Public Member Functions inherited from ImageResizer.Resizing.AbstractImageProcessor
	AbstractImageProcessor ()
	Creates a new AbstractImageProcessor with no extensions More...

	AbstractImageProcessor (IEnumerable< BuilderExtension > extensions)
	Creates a new AbstractImageProcessor which will run the specified extensions with each method call. More...

virtual Bitmap	DecodeStreamFailed (Stream s, ResizeSettings settings, string optionalPath)
	Extensions are executed until one extension returns a non-null value. This is taken to mean that the error has been resolved. Extensions should not throw an exception unless they wish to cause subsequent extensions to not execute. If extensions throw an ArgumentException or ExternalException, it will be wrapped in an ImageCorruptedException instance. If the Bitmap class is used for decoding, read gdi-bugs.txt and make sure you set b.Tag to new BitmapTag(optionalPath,stream); More...

virtual Bitmap	DecodeStream (Stream s, ResizeSettings settings, string optionalPath)
	Extend this to support alternate image source formats. If the Bitmap class is used for decoding, read gdi-bugs.txt and make sure you set b.Tag to new BitmapTag(optionalPath,stream); More...

Public Member Functions inherited from ImageResizer.Plugins.IPlugin
IPlugin	Install (Config c)
	Installs the plugin in the specified Config instance. The plugin must handle all the work of loading settings, registering the plugin etc. More...

bool	Uninstall (Config c)
	Uninstalls the plugin. Should reverse all changes made during Install More...

Protected Member Functions
override RequestedAction	LayoutImage (ImageState s)
	Process.3(Layout).2: Rings 'image' and 'imageArea' are added to the layout. More...

override RequestedAction	PostLayoutImage (ImageState s)
	Process.3(Layout).3: Add rings here to insert them between the image area and the padding More...

override RequestedAction	PreRenderImage (ImageState s)
	Process.5(Render).9: Plugins have a chance to pre-process the source image before it gets rendered, and save it to s.preRenderBitmap More...

Protected Member Functions inherited from ImageResizer.Resizing.AbstractImageProcessor
virtual void	PreLoadImage (ref object source, ref string path, ref bool disposeSource, ref ResizeSettings settings)
	Extend this to allow additional types of source objects to be accepted by transforming them into Bitmap instances. More...

virtual Stream	GetStream (object source, ResizeSettings settings, ref bool disposeStream, out string path, out bool restoreStreamPosition)
	Extend this to allow additional types of source objects to be accepted by transforming them into Stream instances. First plugin to return a Stream wins. More...

virtual RequestedAction	PostDecodeStream (ref Bitmap img, ResizeSettings settings)
	Extend this to modify the Bitmap instance after it has been decoded by DecodeStream or DecodeStreamFailed More...

virtual void	PreAcquireStream (ref object dest, ResizeSettings settings)
	Extend this to allow additional types of destination objects to be accepted by transforming them into a stream. More...

virtual RequestedAction	BuildJob (ImageResizer.ImageJob job)
	The method to override if you want to replace the entire pipeline. All Build() calls call this method first. Does nothing in ImageBuilder More...

virtual RequestedAction	buildToStream (Bitmap source, Stream dest, ResizeSettings settings)
	Called for Build() calls that want the result encoded. (Not for Bitmap Build(source,settings) calls. Only override this method if you need to replace the behavior of image encoding and image processing together, such as adding support for resizing multi-page TIFF files or animated GIFs. More...

virtual Bitmap	buildToBitmap (Bitmap source, ResizeSettings settings, bool transparencySupported)
	Most calls funnel through here. Default behavior configures an ImageState instance and calls Process(imageState); Shouldn't be overriden for any reason I can think of - use the appropriate virtual method under Process(). If an extension returns a Bitmap instance, it will be used instead of the default behavior. Does NOT dispose of 'source' or 'source's underlying stream. More...

virtual RequestedAction	OnProcess (ImageState s)
	Process.0 First step of the Process() method. Can replace the entire Process method if RequestAction.Cancel is returned. Can be used to add points to translate (for image maps), and also to modify the settings More...

virtual RequestedAction	PrepareSourceBitmap (ImageState s)
	Process.1 Switches the bitmap to the correct frame or page, and applies source flipping commands. More...

virtual RequestedAction	PostPrepareSourceBitmap (ImageState s)
	Process.2 Extend this to apply any pre-processing to the source bitmap that needs to occur before Layout begins More...

virtual RequestedAction	Layout (ImageState s)
	Process.3(Layout).0: This is the last point at which points to translate should be added. Only return RequestedAction.Cancel if you wish to replace the entire Layout sequence logic. More...

virtual RequestedAction	FlipExistingPoints (ImageState s)
	Process.3(Layout).1: This is where the points in the layout are flipped the same way the source bitmap was flipped (unless their flags specify otherwise) More...

virtual RequestedAction	LayoutPadding (ImageState s)
	Process.3(Layout).4: Ring "padding" is added to the layout More...

virtual RequestedAction	PostLayoutPadding (ImageState s)
	Process.3(Layout).5: Add rings here to insert them between the padding and the border More...

virtual RequestedAction	LayoutBorder (ImageState s)
	Process.3(Layout).6: Ring "border" is added to the layout More...

virtual RequestedAction	PostLayoutBorder (ImageState s)
	Process.3(Layout).7: Add rings here to insert them between the border and the effect rings More...

virtual RequestedAction	LayoutEffects (ImageState s)
	Process.3(Layout).8: Effects such as 'shadow' are added here. More...

virtual RequestedAction	PostLayoutEffects (ImageState s)
	Process.3(Layout).9: Add rings here to insert them between the effects and the margin More...

virtual RequestedAction	LayoutMargin (ImageState s)
	Process.3(Layout).10: Margins are added to the layout More...

virtual RequestedAction	PostLayoutMargin (ImageState s)
	Process.3(Layout).11: Add rings here to insert them around the margin. Rings will be outermost More...

virtual RequestedAction	LayoutRotate (ImageState s)
	Process.3(Layout).anytime: Occurs when the layout is rotated. May be called anytime during Layout() More...

virtual RequestedAction	PostLayoutRotate (ImageState s)
	Process.3(Layout).anytime: Occurs after the layout is rotated. May be called anytime during Layout() More...

virtual RequestedAction	LayoutNormalize (ImageState s)
	Process.3(Layout).anytime: Occurs when the layout is normalized to 0,0. May be called anytime during Layout() More...

virtual RequestedAction	PostLayoutNormalize (ImageState s)
	Process.3(Layout).anytime: Occurs after the layout is normalized. May be called anytime during Layout() More...

virtual RequestedAction	LayoutRound (ImageState s)
	Process.3(Layout).anytime: Occurs when the layout point values are rounded to integers. May be called anytime during Layout() More...

virtual RequestedAction	PostLayoutRound (ImageState s)
	Process.3(Layout).anytime: Occurs after the layout point values are rounded to integers. May be called anytime during Layout() More...

virtual RequestedAction	EndLayout (ImageState s)
	Process.3(Layout).12: Occurs once layout has finished. No more changes should occur to points or rings in the layout after this method. destSize is calculated here. More...

virtual RequestedAction	PrepareDestinationBitmap (ImageState s)
	Process.4: The destination bitmap is created and sized based destSize. A graphics object is initialized for rendering. More...

virtual RequestedAction	Render (ImageState s)
	Process.5(Render) Rendering. Do not return RequestedAction.Cancel unless you want to replace the entire rendering system. More...

virtual RequestedAction	RenderBackground (ImageState s)
	Process.5(Render).1 The background color is rendered More...

virtual RequestedAction	PostRenderBackground (ImageState s)
	Process.5(Render).2 After the background color is rendered More...

virtual RequestedAction	RenderEffects (ImageState s)
	Process.5(Render).3 Effects (such as a drop shadow or outer glow) are rendered More...

virtual RequestedAction	PostRenderEffects (ImageState s)
	Process.5(Render).4 After outer effects are rendered More...

virtual RequestedAction	RenderPadding (ImageState s)
	Process.5(Render).5 Image padding is drawn More...

virtual RequestedAction	PostRenderPadding (ImageState s)
	Process.5(Render).6 After image padding is drawn More...

virtual RequestedAction	CreateImageAttribues (ImageState s)
	Process.5(Render).7: An ImageAttributes instance is created if it doesn't already exist. More...

virtual RequestedAction	PostCreateImageAttributes (ImageState s)
	Process.5(Render).8: The ImageAttributes instance exists and can be modified or replaced. More...

virtual RequestedAction	RenderImage (ImageState s)
	Process.5(Render).10: The image is copied to the destination parallelogram specified by ring 'image'. More...

virtual RequestedAction	PostRenderImage (ImageState s)
	Process.5(Render).11: After the image is drawn More...

virtual RequestedAction	RenderBorder (ImageState s)
	Process.5(Render).12: The border is rendered More...

virtual RequestedAction	PostRenderBorder (ImageState s)
	Process.5(Render).13: After the border is drawn More...

virtual RequestedAction	PreRenderOverlays (ImageState s)
	Process.5(Render).14: Any last-minute changes before watermarking or overlays are applied More...

virtual RequestedAction	RenderOverlays (ImageState s)
	Process.5(Render).15: Watermarks can be rendered here. All image processing should be done More...

virtual RequestedAction	PreFlushChanges (ImageState s)
	Process.5(Render).16: Called before changes are flushed and the graphics object is destroyed. More...

virtual RequestedAction	FlushChanges (ImageState s)
	Process.5(Render).17: Changes are flushed to the bitmap here and the graphics object is destroyed. More...

virtual RequestedAction	PostFlushChanges (ImageState s)
	Process.5(Render).18: Changes have been flushed to the bitmap, but the final bitmap has not been flipped yet. More...

virtual RequestedAction	ProcessFinalBitmap (ImageState s)
	Process.6: Non-rendering changes to the bitmap object occur here, such as flipping. The graphics object is unavailable. More...

virtual RequestedAction	EndProcess (ImageState s)
	Process.7: Layout and rendering are both complete. More...

Additional Inherited Members
Protected Attributes inherited from ImageResizer.Resizing.AbstractImageProcessor
volatile IEnumerable < BuilderExtension >	exts
	Contains the set of extensions that are called for every method. More...

Detailed Description

Definition at line 13 of file SeamCarvingPlugin.cs.

Member Function Documentation

IEnumerable<string> ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin.GetSupportedQuerystringKeys ( )

inline

If the plugin reads any values from the querystring, the names of the keys should be specified here. This information is required so that the HttpModule knows when to handle an image request.

Returns

Implements ImageResizer.Plugins.IQuerystringPlugin.

Definition at line 201 of file SeamCarvingPlugin.cs.

                                                                  {
             return new string[] { "carve" };
         }

override RequestedAction ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin.LayoutImage ( ImageState s )

inlineprotectedvirtual

Process.3(Layout).2: Rings 'image' and 'imageArea' are added to the layout.

Parameters

s

Reimplemented from ImageResizer.Resizing.AbstractImageProcessor.

Definition at line 45 of file SeamCarvingPlugin.cs.

                                                                      {
             if (s.sourceBitmap == null) return RequestedAction.None;
 
 
             //Parse carve data bitmap
             if (!string.IsNullOrEmpty(s.settings["carve.data"])) {
                 string[] parts = s.settings["carve.data"].Split('|');
                 //Parse block count and string
                 var block_count = int.Parse(parts[0]);
                 var carveString = new LzwDecoder("012").Decode(PathUtils.FromBase64UToBytes(parts[1]));
 
                 float block_size = (int)Math.Floor(Math.Sqrt(s.originalSize.Width * s.originalSize.Height / (double)block_count));
 
                 var carveData = new CarveDataPlotter() {
                     BlockCount=block_count,
                     Stride = (int)Math.Ceiling((float)s.originalSize.Width / block_size),
                     Rows = (int)Math.Ceiling((float)s.originalSize.Height / block_size)
                 };
 
                 carveData.Init(carveString);
 
                 Size remove = carveData.GetRemovalSpace(s.originalSize.Width,s.originalSize.Height,(int)block_size);
 
                 if (remove.Width / s.originalSize.Width > remove.Height / s.originalSize.Height) {
                     s.originalSize = new Size(s.originalSize.Width - remove.Width, s.originalSize.Height);
                 } else {
                     s.originalSize = new Size(s.originalSize.Width, s.originalSize.Height - remove.Height);
                 }
                 
                 //Save later
                 s.Data[CarveData] = carveData;
             }
 
 
 
             return RequestedAction.None;
 
         }

override RequestedAction ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin.PostLayoutImage ( ImageState s )

inlineprotectedvirtual

Process.3(Layout).3: Add rings here to insert them between the image area and the padding

Parameters

s

Reimplemented from ImageResizer.Resizing.AbstractImageProcessor.

Definition at line 85 of file SeamCarvingPlugin.cs.

                                                                          {
             
             return RequestedAction.None;
         }

override RequestedAction ImageResizer.Plugins.SeamCarving.SeamCarvingPlugin.PreRenderImage ( ImageState s )

inlineprotectedvirtual

Process.5(Render).9: Plugins have a chance to pre-process the source image before it gets rendered, and save it to s.preRenderBitmap

Parameters

s

Reimplemented from ImageResizer.Resizing.AbstractImageProcessor.

Definition at line 92 of file SeamCarvingPlugin.cs.

                                                                         {
             //Skip this when we are doing simulations
             if (s.destGraphics == null) return RequestedAction.None;
 
             s.ApplyCropping();
             s.EnsurePreRenderBitmap();
 
             //Parse carve algorithm kind
             FilterType ftype = s.settings.Get<FilterType>("carve", FilterType.None);
             if ("true".Equals(s.settings["carve"], StringComparison.OrdinalIgnoreCase)) ftype = FilterType.Prewitt;
             if (string.IsNullOrEmpty(s.settings["carve"]) && s.settings.Mode == FitMode.Carve) ftype = FilterType.Prewitt;
 
             //If we have carve data
             CarveDataPlotter carveData = s.Data.ContainsKey(CarveData) ? (s.Data[CarveData] as CarveDataPlotter) : null;
             if (carveData != null && ftype == FilterType.None) ftype = FilterType.Prewitt;
 
             RectangleF copyRect = s.copyRect;
 
             if (carveData != null) copyRect = new RectangleF(new PointF(0, 0), s.sourceBitmap.Size);
 
             if (ftype == FilterType.None) return RequestedAction.None; //Only override rendering when carving is requested.
 
             //The minimum dimensions of the temporary bitmap.
             SizeF targetSize = PolygonMath.getParallelogramSize(s.layout["image"]);
             targetSize = new SizeF((float)Math.Ceiling(targetSize.Width), (float)Math.Ceiling(targetSize.Height));
 
   
             //The size of the temporary bitmap. 
             //We want it larger than the size we'll use on the final copy, so we never upscale it
             //- but we also want it as small as possible so processing is fast.
             SizeF tempSize = PolygonMath.ScaleOutside(targetSize, copyRect.Size);
             int tempWidth = (int)Math.Ceiling(tempSize.Width);
             int tempHeight = (int)Math.Ceiling(tempSize.Height);
 
             //The intermediate and seam carved files
             string tempFile = Path.GetTempFileName();
             string outputTempFile = Path.GetTempFileName();
 
             try {
                 try {
 
                     //Create a temporary bitmap that is 'halfway resized', so we can efficiently perfom seam carving.
 
                     //Unless it's already been done for us by FreeImageResize or something
                     if (s.preRenderBitmap != null && (tempWidth - s.preRenderBitmap.Width < 50 && tempHeight - s.preRenderBitmap.Height < 50)) {
                         s.preRenderBitmap.Save(tempFile, ImageFormat.Bmp);
                         tempWidth = s.preRenderBitmap.Width;
                         tempHeight = s.preRenderBitmap.Height;
                     } else {
                         //Create the temporary bitmap and graphics.
                         using (Bitmap temp = new Bitmap(tempWidth, tempHeight, PixelFormat.Format32bppArgb))
                         using (Graphics g = Graphics.FromImage(temp))
                         using (ImageAttributes ia = new ImageAttributes()) {
                             //High quality everthing
                             g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                             g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                             g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
                             g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
                             g.CompositingMode = CompositingMode.SourceOver;
                             ia.SetWrapMode(WrapMode.TileFlipXY);
                             if (s.preRenderBitmap != null) {
                                 g.DrawImage(s.preRenderBitmap, new Rectangle(0, 0, tempWidth, tempHeight), 0, 0, s.preRenderBitmap.Width, s.preRenderBitmap.Height, GraphicsUnit.Pixel, ia);
                             } else {
                                 g.DrawImage(s.sourceBitmap, new Rectangle(0, 0, tempWidth, tempHeight), copyRect.X, copyRect.Y, copyRect.Width, copyRect.Height, GraphicsUnit.Pixel, ia);
                             }
                             g.Flush(FlushIntention.Flush);
                             //Save
                             temp.Save(tempFile, ImageFormat.Bmp);
                         }
                     }
 
                     string maskFile = carveData != null ? Path.GetTempFileName() : null;
                     try {
                         if (carveData != null)
                             carveData.SaveBitmapAs(maskFile, tempWidth, tempHeight);
                         
                         Size intTargetSize = new Size((int)targetSize.Width, (int)targetSize.Height);
                         CairJob job = new CairJob();
                         if (maskFile != null) job.WeightPath = maskFile;
                         job.SourcePath = tempFile;
                         job.DestPath = outputTempFile;
                         job.Size = intTargetSize;
                         job.Filter = ftype;
                         job.Timeout = 5000;
                         cair.CairyIt(job);
                     } finally {
                         if (maskFile != null) File.Delete(maskFile);
                     }
 
                 } finally {
                     File.Delete(tempFile);
                 }
 
                 //Dispose old intermediate bitmap first
                 if (s.preRenderBitmap != null) s.preRenderBitmap.Dispose();
 
                 //Load the new intermediate file from disk
                 s.preRenderBitmap = new Bitmap(outputTempFile);
                 s.preRenderBitmap.MakeTransparent();
 
             } finally {
                 File.Delete(outputTempFile);
             }
 
             return RequestedAction.Cancel;
         }

The documentation for this class was generated from the following file:

C:/Users/nathanael/Documents/resizer/Plugins/SeamCarving/SeamCarvingPlugin.cs

Public Types

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation