org.extex.font.format.dvi
Class DviValues

java.lang.Object
  org.extex.font.format.dvi.DviValues

public class DviValues
extends java.lang.Object

Values for dvi.

The values of h, v, w, x, y, and z are signed integers having up to 32 bits, including the sign.

Since they represent physical distances, there is a small unit of measurement such that increasing h by 1 means moving a certain tiny distance to the right. The actual unit of measurement is variable.

The current font f is an integer; this value is changed only by fnt and fnt_num commands.

The current position on the page is given by two numbers called the horizontal and vertical coordinates, h and v.

Both coordinates are zero at the upper left corner of the page; moving to the right corresponds to increasing the horizontal coordinate, and moving down corresponds to increasing the vertical coordinate. Thus, the coordinates are essentially Cartesian, except that vertical directions are flipped; the Cartesian version of (h,v) would be (h,-v).

The current spacing amounts are given by four numbers w, x, y, and z, where w and x are used for horizontal spacing and where y and z are used for vertical spacing.

There is a stack containing (h,v,w,x,y,z) values; the DVI commands push and pop are used to change the current level of operation. Note that the current font f is not pushed and popped; the stack contains only information about positioning.

Version:

$Revision: 7275 $

Author:

Michael Niedermair

Constructor Summary

DviValues()
Create a new object.

DviValues(DviValues val)
Create a new object.

Method Summary

void	addH(int ah)
void	addV(int av)
void	clear() clear all values (without f!).
int	getF() Returns the f.
int	getH() Returns the h.
int	getV() Returns the v.
int	getW() Returns the w.
int	getX() Returns the x.
int	getY() Returns the y.
int	getZ() Returns the z.
boolean	isClear() Check, if the values (h,v,w,x,z,z) all zero.
void	setF(int af)
void	setH(int ah)
void	setV(int av)
void	setValues(DviValues val) set the values (without f!)
void	setW(int aw)
void	setX(int ax)
void	setY(int ay)
void	setZ(int az)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DviValues

public DviValues()

Create a new object.

DviValues

public DviValues(DviValues val)

Create a new object.

Parameters:

val - the new values.

Method Detail

addH

public void addH(int ah)

Parameters:

ah - The h to add.

addV

public void addV(int av)

Parameters:

av - The v to add.

clear

public void clear()

clear all values (without f!).

getF

public int getF()

Returns the f.

Returns:

Returns the f.

getH

public int getH()

Returns the h.

Returns:

Returns the h.

getV

public int getV()

Returns the v.

Returns:

Returns the v.

getW

public int getW()

Returns the w.

Returns:

Returns the w.

getX

public int getX()

Returns the x.

Returns:

Returns the x.

getY

public int getY()

Returns the y.

Returns:

Returns the y.

getZ

public int getZ()

Returns the z.

Returns:

Returns the z.

isClear

public boolean isClear()

Check, if the values (h,v,w,x,z,z) all zero.

Returns:

Returns true, if all values are zero.

setF

public void setF(int af)

Parameters:

af - The f to set.

setH

public void setH(int ah)

Parameters:

ah - The h to set.

setV

public void setV(int av)

Parameters:

av - The v to set.

setValues

public void setValues(DviValues val)

set the values (without f!)

Parameters:

val - the new values

setW

public void setW(int aw)

Parameters:

aw - The w to set.

setX

public void setX(int ax)

Parameters:

ax - The x to set.

setY

public void setY(int ay)

Parameters:

ay - The y to set.

setZ

public void setZ(int az)

Parameters:

az - The z to set.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()