MGD::DEVICE_RASTER_TRANS_MASK Class Reference

Device for rendering to 24-bit RVC raster with corresponding opacity mask object. More...

#include <mi32/mg2rastt.h>

Inheritance diagram for MGD::DEVICE_RASTER_TRANS_MASK:

[legend]

List of all members.

Classes
class	CONTEXT
Public Member Functions
	DEVICE_RASTER_TRANS_MASK ()
virtual	~DEVICE_RASTER_TRANS_MASK ()
ERRVALUE	Create (RVC::OBJITEM &ObjItem, RVC::RASTER::MAKEPARMS &MakeParms, const RVC::CREDENTIALS *Credentials=0)
ERRVALUE	Create (RVC::OBJECT &ParentObject, const RVC::DESCRIPTOR &Descriptor, RVC::RASTER::MAKEPARMS &MakeParms, const RVC::CREDENTIALS *Credentials=0)
ERRVALUE	GetObjItemMask (RVC::OBJITEM &ObjItem) const
ERRVALUE	GetObjItemRaster (RVC::OBJITEM &ObjItem) const
ERRVALUE	Open (const RVC::OBJITEM &ObjItem, const RVC::CREDENTIALS *Credentials=0)
Protected Member Functions
virtual UINT8 *	v_GetImagePointer (INT32 x, INT32 y, INT32 len, UINT16 FrameBuffer)
virtual UINT8 *	v_GetImagePointerNoRead (INT32 x, INT32 y, INT32 len, UINT16 FrameBuffer)
virtual ERRVALUE	v_WriteImageBuffer (INT32 x, INT32 y, INT32 len, UINT8 *buf, UINT16 FrameBuffer)

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Detailed Description

Device for rendering to 24-bit RVC raster with corresponding opacity mask object.

Raster must have CELLTYPE_RedGreenBlue_24 or BlueGreenRed_24. Device will have COLORSPACE_R8_G8_B8_A8 or B8_G8_R8_A8 respectively. If the size is <= 1024x1024, both will be held in memory for speed

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Constructor & Destructor Documentation

MGD::DEVICE_RASTER_TRANS_MASK::DEVICE_RASTER_TRANS_MASK

(

)

Default constructor.

After constructing, you must call Create() or Open().

virtual MGD::DEVICE_RASTER_TRANS_MASK::~DEVICE_RASTER_TRANS_MASK

(

)

[virtual]

Destructor.

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Member Function Documentation

ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::Create	(	RVC::OBJITEM &	ObjItem,
		RVC::RASTER::MAKEPARMS &	MakeParms,
		const RVC::CREDENTIALS *	Credentials = 0
	)

Create raster and corresponding opacity mask to draw into.

ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::Create	(	RVC::OBJECT &	ParentObject,
		const RVC::DESCRIPTOR &	Descriptor,
		RVC::RASTER::MAKEPARMS &	MakeParms,
		const RVC::CREDENTIALS *	Credentials = 0
	)

Create raster and corresponding opacity mask to draw into.

ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::GetObjItemMask

(

RVC::OBJITEM &

ObjItem

)

const [inline]

Get OBJITEM for mask.

ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::GetObjItemRaster

(

RVC::OBJITEM &

ObjItem

)

const [inline]

Get OBJITEM for raster.

ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::Open	(	const RVC::OBJITEM &	ObjItem,
		const RVC::CREDENTIALS *	Credentials = 0
	)

Open existing raster to draw into.

Will create opacity mask subobject if none exists.

virtual UINT8* MGD::DEVICE_RASTER_TRANS_MASK::v_GetImagePointer	(	INT32	x,
		INT32	y,
		INT32	len,
		UINT16	FrameBuffer
	)			[protected, virtual]

In the Raster case, this will actually read the raster.

Reimplemented from MGD::DEVICE.

virtual UINT8* MGD::DEVICE_RASTER_TRANS_MASK::v_GetImagePointerNoRead	(	INT32	x,
		INT32	y,
		INT32	len,
		UINT16	FrameBuffer
	)			[protected, virtual]

If GetImagePointer returns a pointer directly into the frame buffer, this function does not need to be overridden.

If GetImagePointer has to actually read something (say via an X call to the display or reading out of a raster, then this version should just return a temporary buffer big enough to hold a single line.

Reimplemented from MGD::DEVICE.

virtual ERRVALUE MGD::DEVICE_RASTER_TRANS_MASK::v_WriteImageBuffer	(	INT32	x,
		INT32	y,
		INT32	len,
		UINT8 *	buf,
		UINT16	FrameBuffer
	)			[protected, virtual]

Write an image buffer to the display If GetImagePointer reutrns a pointer directly into the frame buffer, this method can just return 0.

If GetImagePointer has to actually read something, this method is used to write the result back out. Typically used when drawing to a raster

Reimplemented from MGD::DEVICE.

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

• mi32/mg2rastt.h