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ColorData

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ColorData: Data subclasses for storing common undo information

NAME
ColorData, GSData, MobilityData, MoveData, VoidData - Data subclasses for storing common undo information
SYNOPSIS
#include <Unidraw/Commands/datas.h>

DESCRIPTION

The Unidraw library predefines several Data subclasses for storing common undo information: ColorData stores two PSColors (usually representing foreground and background colors), while GSData stores a complete set of graphics state in a FullGraphic object. MobilityData stores the mobility and graphics state information needed to undo a change in mobility. MoveData stores a horizontal and vertical distance. VoidData stores a void pointer as a useful alternative to deriving trivially from Data just to store one word of information.

COLORDATA PUBLIC OPERATIONS

ColorData(PSColor*, PSColor*) Create a ColorData instance, supplying the PSColor objects it stores.

GSDATA PUBLIC OPERATIONS

GSData(Graphic*) Create a GSData instance, supplying the Graphic object from which to copy a complete set of graphics state. The GSData constructor copies this information into its _gs member, from whence it can be retrieved later.

MOBILITYDATA PUBLIC OPERATIONS

MobilityData(Mobility, Graphic*) Create a MobilityData instance, supplying the mobility and a Graphic object from which to copy a complete set of graphics state. The MobilityData constructor copies the graphic into its _gs member, from whence it can be retrieved later.
MOVEDATA PUBLIC OPERATIONS
MoveData(float, float) Create a MoveData instance, supplying two floating point numbers that normally represent horizontal and vertical movement.
VOIDDATA PUBLIC OPERATIONS
VoidData(void*) Create a VoidData instance, supplying a pointer to an object of unknown type.

SEE ALSO

Data, Graphic, globals COLORDATA(3)
 
 
 

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