NAMEColorData, GSData, MobilityData, MoveData, VoidData - Data subclasses for storing common undo information
DESCRIPTIONThe 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 OPERATIONSColorData(PSColor*, PSColor*) Create a ColorData instance, supplying the PSColor objects it stores.
GSDATA PUBLIC OPERATIONSGSData(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 OPERATIONSMobilityData(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 OPERATIONSMoveData(float, float) Create a MoveData instance, supplying two floating point numbers that normally represent horizontal and vertical movement.
VOIDDATA PUBLIC OPERATIONSVoidData(void*) Create a VoidData instance, supplying a pointer to an object of unknown type.
SEE ALSOData, Graphic, globals COLORDATA(3)