#include <djv_renderer.h>

Inheritance diagram for Celartem::DjVu::ImageRenderer:

Public Member Functions
virtual void	render (u8 ioImagePtr, ssize_t inRowStride, Photometric inPm, const Rect &inRect, size_t inRescaledWidth, size_t inRescaledHeight, const u8 inForeground, ssize_t inForeRowStride, size_t inForeWidth, size_t inForeHeight, size_t inForeX, size_t inForeY, bool inUseFastRescaling) const

Public Member Functions inherited from Celartem::DjVu::Renderer
virtual bool	addChunk (const Chunk *inChunk)=0

virtual size_t	getWidth () const =0

virtual size_t	getHeight () const =0

virtual Photometric	getPhotometric () const =0

virtual size_t	getBitsPerComponent () const =0

virtual size_t	getDpi () const =0

virtual String	getChunkId () const =0

virtual Referable *	getInternalRenderer () const =0

virtual	~Renderer ()

Public Member Functions inherited from Celartem::Referable
	Referable ()

void	addRef () const

void	releaseRef () const

size_t	getReferenceCount () const

Protected Member Functions
virtual const void *	lockSource (ssize_t &outSrcRowStride, const Rect &inSrcRect, Photometric inPhotometric) const =0

virtual void	unlockSource () const =0

Additional Inherited Members
Static Public Member Functions inherited from Celartem::DjVu::Renderer
static AutoPtr< Renderer >	create (const Chunk inChunk, const Dictionary inDictionary)

Static Public Member Functions inherited from Celartem::Referable
static void	dumpDbgAllRefCount ()

Detailed Description

ImageRenderer class provides a partial stock implementation for foreground/background image renderer.
All you have to do is to implement lockSource and unlockSource functions.

Member Function Documentation

virtual const void* Celartem::DjVu::ImageRenderer::lockSource	(	ssize_t &	outSrcRowStride,
		const Rect &	inSrcRect,
		Photometric	inPhotometric
	)		const

protectedpure virtual

Lock a portion of the source image.

Parameters

outSrcRowStride	On return, it preserves row-stride of the locked image.
inSrcRect	Portion of the source image to render.
inPhotometric	Photometric of the output.

Returns: Pointer to the locked portion of the image.

virtual void Celartem::DjVu::ImageRenderer::render	(	u8 *	ioImagePtr,
		ssize_t	inRowStride,
		Photometric	inPm,
		const Rect &	inRect,
		size_t	inRescaledWidth,
		size_t	inRescaledHeight,
		const u8 *	inForeground,
		ssize_t	inForeRowStride,
		size_t	inForeWidth,
		size_t	inForeHeight,
		size_t	inForeX,
		size_t	inForeY,
		bool	inUseFastRescaling
	)		const

inlinevirtual

Renders a portion of the mask.

Parameters

ioImagePtr	Pointer to a buffer which receives the rendered image. If this call renders a mask, the buffer already has background image or filled with some color.
inRowStride	The row-stride of the image.
inPm	The photometric of the image.
inRect	Rectangle to draw in the rescaled image coordination.
inRescaledWidth	The virtual width of the rescaled page image. This method renders page image as if it had this width. If 0 is specified, the rendered image is same size to the original page size.
inRescaledHeight	The virtual height of the rescaled page image. This method renders page image as if it had this height. If 0 is specified, the rendered image is same size to the original page size.
inForeground	Optional pointer to the foreground image. If this is `NULL`, then all the foreground related parameters are ignored and then the mask is painted with its own palette. This parameter is only used if the Renderer instance is used for a mask and there's a foreground to stencil.
inForeRowStride	The row-stride of the foreground image. This parameter is only used if the Renderer instance is used for a mask and there's a foreground to stencil.
inForeWidth	The full width of the foreground image. This parameter is only used if the Renderer instance is used for a mask and there's a foreground to stencil.
inForeHeight	The full height of the foreground image. This parameter is only used if the Renderer instance is used for a mask and there's a foreground to stencil.
inForeX	The left position, where the foreground rendering starts. The mask pixel X corresponds to the foreground pixel (X + inForeX) * inForeWidth / inRescaledWidth.
inForeY	The top position, where the foreground rendering starts. The mask pixel Y corresponds to the foreground pixel (Y + inForeY) * inForeHeight / inRescaledHeight.
inUseFastRescaling	Determine whether to use fast rescaling algorithm or not. The default is not to use fast rescaling algorithm.

Implements Celartem::DjVu::Renderer.

virtual void Celartem::DjVu::ImageRenderer::unlockSource ( ) const

protectedpure virtual

Unlock the previously locked portion of the source image.

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

djv_renderer.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation