MGD::DEVICE_RASTER_COLORMAPPED Class Reference

#include <mi32/mg2rastc.h>

Inheritance diagram for MGD::DEVICE_RASTER_COLORMAPPED:

[legend]

List of all members.

Public Types
enum	COLORPOLICY { COLORPOLICY_UseClosest = 0, COLORPOLICY_AddColor = 1, COLORPOLICY_Transparent = 2, COLORPOLICY_Fallback = 3 }
Public Member Functions
	DEVICE_RASTER_COLORMAPPED ()
virtual	~DEVICE_RASTER_COLORMAPPED ()
ERRVALUE	Create (RVC::OBJITEM &ObjItem, RVC::RASTER::MAKEPARMS &MakeParms, const COLOR_ARRAY &cmap, const char *Source=0)
ERRVALUE	Open (const RVC::OBJITEM &ObjItem)
void	SetColorPolicy (COLORPOLICY policy)
void	SetFallbackPixel (PIXEL pixel)
Private Member Functions
virtual CONTEXT *	v_CreateContext ()
virtual ERRVALUE	v_Flush ()
virtual const COLOR_ARRAY *	v_GetColorMap () const
virtual PIXEL	v_GetColorPixel (const COLOR &color)
virtual COLORSPACE	v_GetColorSpace () const
virtual void	v_GetPixelColor (PIXEL pixel, COLOR &color) const

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Member Enumeration Documentation

enum MGD::DEVICE_RASTER_COLORMAPPED::COLORPOLICY

How to deal with SetColor() if the color isn't in the colormap.

Enumerator:

COLORPOLICY_UseClosest	Use the closest matching color.
COLORPOLICY_AddColor	Add the color to the colormap (falls back to UseClosest once colormap is full).
COLORPOLICY_Transparent	Treat it as a transparent color.
COLORPOLICY_Fallback	Fallback to value set via SetFallbackPixel() (default = 0).

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Constructor & Destructor Documentation

MGD::DEVICE_RASTER_COLORMAPPED::DEVICE_RASTER_COLORMAPPED

(

)

Construct a colormapped raster device.

After constructing, you should call Create()

virtual MGD::DEVICE_RASTER_COLORMAPPED::~DEVICE_RASTER_COLORMAPPED

(

)

[virtual]

Destructor.

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Member Function Documentation

ERRVALUE MGD::DEVICE_RASTER_COLORMAPPED::Create	(	RVC::OBJITEM &	ObjItem,
		RVC::RASTER::MAKEPARMS &	MakeParms,
		const COLOR_ARRAY &	cmap,
		const char *	Source = 0
	)

Create a raster to draw into To draw into an existing raster, call Open.

Parameters:

cmap

Initial colormap

ERRVALUE MGD::DEVICE_RASTER_COLORMAPPED::Open

(

const RVC::OBJITEM &

ObjItem

)

Open a raster to draw into.

To draw into an existing raster, call Open

Reimplemented from MGD::DEVICE_RASTER_GRAY8.

void MGD::DEVICE_RASTER_COLORMAPPED::SetColorPolicy

(

COLORPOLICY

policy

)

[inline]

void MGD::DEVICE_RASTER_COLORMAPPED::SetFallbackPixel

(

PIXEL

pixel

)

[inline]

Set the pixel value to fallback to if using COLORPOLICY_Fallback.

virtual CONTEXT* MGD::DEVICE_RASTER_COLORMAPPED::v_CreateContext

(

)

[private, virtual]

Create a GC for drawing.

Derived classes may override this and make it return anything derived from MGD_GC. MGD_GC's constructor is private, so this is the only way for calling code to create a GC.

Reimplemented from MGD::DEVICE_RASTER_GRAY8.

virtual ERRVALUE MGD::DEVICE_RASTER_COLORMAPPED::v_Flush

(

)

[private, virtual]

Called by WritePixArray just before it starts writing Colormapped derived class can use this to update colormap.

Reimplemented from MGD::DEVICE_RASTER_GRAY8.

virtual const COLOR_ARRAY* MGD::DEVICE_RASTER_COLORMAPPED::v_GetColorMap

(

)

const [private, virtual]

Get color palette, default implementation returns NULL.

Reimplemented from MGD::DEVICE.

virtual PIXEL MGD::DEVICE_RASTER_COLORMAPPED::v_GetColorPixel

(

const COLOR &

color

)

[private, virtual]

Given a color, return the pixel value that matches or is as close as possible.

Reimplemented from MGD::DEVICE_MEM8G.

virtual COLORSPACE MGD::DEVICE_RASTER_COLORMAPPED::v_GetColorSpace

(

)

const [inline, private, virtual]

Return the "native" COLORSPACE used by the display.

We fake it and look up the color later

Reimplemented from MGD::DEVICE_MEM8G.

virtual void MGD::DEVICE_RASTER_COLORMAPPED::v_GetPixelColor	(	PIXEL	pixel,
		COLOR &	color
	)			const [private, virtual]

Given a pixel value, return the color it represents.

This should NOT take ICM into account. The context will translate the color back through the inverse ICM transform (if any)

Reimplemented from MGD::DEVICE_MEM8G.

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

• mi32/mg2rastc.h