Package org.apache.fontbox.ttf

Class GlyfDescript

java.lang.Object

org.apache.fontbox.ttf.GlyfDescript

All Implemented Interfaces:

GlyphDescription

Direct Known Subclasses:

GlyfCompositeDescript, GlyfSimpleDescript

public abstract class GlyfDescript
extends java.lang.Object
implements GlyphDescription

This class is based on code from Apache Batik a subproject of Apache XMLGraphics. see http://xmlgraphics.apache.org/batik/ for further details.

Field Summary

Fields

Modifier and Type	Field	Description
static byte	ON_CURVE	if set, the point is on the curve.
static byte	REPEAT	if set, the next byte specifies the number of additional times this set of flags is to be repeated.
static byte	X_DUAL	This flag as two meanings, depending on how the x-short vector flags is set.
static byte	X_SHORT_VECTOR	if set, the x-coordinate is 1 byte long.
static byte	Y_DUAL	This flag as two meanings, depending on how the y-short vector flags is set.
static byte	Y_SHORT_VECTOR	if set, the y-coordinate is 1 byte long.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	GlyfDescript(short numberOfContours, org.apache.fontbox.ttf.TTFDataStream bais)	Constructor.

Method Summary

Modifier and Type	Method	Description
int	getContourCount()	Returns the number of contours.
int[]	getInstructions()	Returns the hinting instructions.
protected void	readInstructions(org.apache.fontbox.ttf.TTFDataStream bais, int count)	Read the hinting instructions.
void	resolve()	Resolve all parts of an composite glyph.

Methods inherited from interface org.apache.fontbox.ttf.GlyphDescription

getEndPtOfContours, getFlags, getPointCount, getXCoordinate, getYCoordinate, isComposite

Methods inherited from class java.lang.Object

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

Field Detail

ON_CURVE

public static final byte ON_CURVE

if set, the point is on the curve.

See Also:

Constant Field Values

X_SHORT_VECTOR

public static final byte X_SHORT_VECTOR

if set, the x-coordinate is 1 byte long.

See Also:

Constant Field Values

Y_SHORT_VECTOR

public static final byte Y_SHORT_VECTOR

if set, the y-coordinate is 1 byte long.

See Also:

Constant Field Values

REPEAT

public static final byte REPEAT

if set, the next byte specifies the number of additional times this set of flags is to be repeated.

See Also:

Constant Field Values

X_DUAL

public static final byte X_DUAL

This flag as two meanings, depending on how the x-short vector flags is set. If the x-short vector is set, this bit describes the sign of the value, with 1 equaling positive and 0 positive. If the x-short vector is not set and this bit is also not set, the current x-coordinate is a signed 16-bit delta vector.

See Also:

Constant Field Values

Y_DUAL

public static final byte Y_DUAL

This flag as two meanings, depending on how the y-short vector flags is set. If the y-short vector is set, this bit describes the sign of the value, with 1 equaling positive and 0 positive. If the y-short vector is not set and this bit is also not set, the current y-coordinate is a signed 16-bit delta vector.

See Also:

Constant Field Values

Constructor Detail

GlyfDescript

protected GlyfDescript(short numberOfContours,
                       org.apache.fontbox.ttf.TTFDataStream bais)
                throws java.io.IOException

Constructor.

Parameters:

numberOfContours - the number of contours

bais - the stream to be read

Throws:

java.io.IOException - is thrown if something went wrong

Method Detail

resolve

public void resolve()

Resolve all parts of an composite glyph.

Specified by:

resolve in interface GlyphDescription

getContourCount

public int getContourCount()

Returns the number of contours.

Specified by:

getContourCount in interface GlyphDescription

Returns:

the number of contours

getInstructions

public int[] getInstructions()

Returns the hinting instructions.

Returns:

an array containing the hinting instructions.

readInstructions

protected void readInstructions(org.apache.fontbox.ttf.TTFDataStream bais,
                                int count)
                         throws java.io.IOException

Read the hinting instructions.

Parameters:

bais - the stream to be read

count - the number of instructions to be read

Throws:

java.io.IOException - is thrown if something went wrong