dotnet-framework-api
- C1.WPF.PdfViewer.4.6.2 Assembly

CSJ2K.j2k.image.ImgData

ImgData Interface

This interface defines methods to access image attributes (width, height, number of components, etc.). The image can be tiled or not (i.e. if the image is not tiled then there is only 1 tile). It should be implemented by all classes that provide image data, such as image file readers, color transforms, wavelet transforms, etc. This interface, however, does not define methods to transfer image data (i.e. pixel data), that is defined by other interfaces, such as 'BlkImgDataSrc'.

Namespace: CSJ2K.j2k.image

Assembly: C1.WPF.PdfViewer.4.6.2.dll

Syntax

public interface ImgData

Properties

Name	Description
ImgHeight	Returns the overall height of the image in pixels. This is the image's height without accounting for any component subsampling or tiling.
ImgULX	Returns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
ImgULY	Returns the vertical coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
ImgWidth	Returns the overall width of the image in pixels. This is the image's width without accounting for any component subsampling or tiling.
NomTileHeight	Returns the nominal tiles height
NomTileWidth	Returns the nominal tiles width
NumComps	Returns the number of components in the image.
TileHeight	Returns the overall height of the current tile in pixels. This is the tile's height without accounting for any component subsampling. This is also referred as the reference grid height in the current tile.
TileIdx	Returns the index of the current tile, relative to a standard scan-line order.
TilePartULX	Returns the horizontal tile partition offset in the reference grid
TilePartULY	Returns the vertical tile partition offset in the reference grid
TileWidth	Returns the overall width of the current tile in pixels. This is the tile's width without accounting for any component subsampling. This is also referred as the reference grid width in the current tile.

Methods

Name	Description
getCompImgHeight(int)	Returns the height in pixels of the specified component in the overall image.
getCompImgWidth(int)	Returns the width in pixels of the specified component in the overall image.
getCompSubsX(int)	Returns the component subsampling factor in the horizontal direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details.
getCompSubsY(int)	Returns the component subsampling factor in the vertical direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details.
getCompULX(int)	Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.
getCompULY(int)	Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.
getNomRangeBits(int)
getNumTiles()	Returns the total number of tiles in the image.
getNumTiles(Coord)	Returns the number of tiles in the horizontal and vertical directions.
getTile(Coord)	Returns the indixes of the current tile. These are the horizontal and vertical indexes of the current tile.
getTileCompHeight(int, int)	Returns the height in pixels of the specified tile-component.
getTileCompWidth(int, int)	Returns the width in pixels of the specified tile-component
nextTile()	Advances to the next tile, in standard scan-line order (by rows then columns). An NoNextElementException is thrown if the current tile is the last one (i.e. there is no next tile).
setTile(int, int)	Changes the current tile, given the new indices. An IllegalArgumentException is thrown if the coordinates do not correspond to a valid tile.