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(3U), Graphic(3U), globals(3U)

Unidraw  —  Last change: 24 January 1991