org.foray.font.format.ttf
Class TTFTableGLYF

java.lang.Object
  org.foray.font.format.ttf.TTFTableGLYF

public class TTFTableGLYF
extends Object

A TrueType/OpenType "glyf" (Glyph Data) table. This table is used only in fonts that contain TrueType outlines.

Field Summary

protected static byte	BYTE_BYTES The size, in bytes of the data type "BYTE", that is, 1.
static byte	CF_BIT_ARG_1_AND_2_ARE_WORDS The bit in the composite flag indicating ARG_1_AND_2_ARE_WORDS.
static byte	CF_BIT_ARGS_ARE_XY_VALUES The bit in the composite flag indicating ARGS_ARE_XY_VALUES.
static byte	CF_BIT_MORE_COMPONENTS The bit in the composite flag indicating MORE_COMPONENTS.
static byte	CF_BIT_ROUND_XY_TO_GRID The bit in the composite flag indicating ROUND_XY_TO_GRID.
static byte	CF_BIT_USE_MY_METRICS The bit in the composite flag indicating USE_MY_METRICS.
static byte	CF_BIT_WE_HAVE_A_SCALE The bit in the composite flag indicating WE_HAVE_A_SCALE.
static byte	CF_BIT_WE_HAVE_A_TWO_BY_TWO The bit in the composite flag indicating WE_HAVE_A_TWO_BY_TWO.
static byte	CF_BIT_WE_HAVE_AN_X_AND_Y_SCALE The bit in the composite flag indicating WE_HAVE_AN_X_AND_Y_SCALE.
static byte	CF_BIT_WE_HAVE_INSTRUCTIONS The bit in the composite flag indicating WE_HAVE_INSTRUCTIONS.
protected static byte	CHAR_BYTES The size, in bytes of the data type "CHAR", that is, 1.
protected static byte	F2DOT14_BYTES The size, in bytes of the data type "F2DOT14", that is, 2.
protected static byte	FIXED_BYTES The size, in bytes of the data type "FIXED", that is, 4.
protected static byte	FWORD_BYTES The size, in bytes of the data type "FWORD", that is, 2.
static byte	HEADER_SIZE The size, in bytes, of the header portion of this table.
protected static byte	LONG_BYTES The size, in bytes of the data type "LONG", that is, 4.
protected static byte	LONG_DATE_TIME_BYTES The size, in bytes of the data type "International Date", that is, 8.
protected static byte	OFFSET_BYTES The size, in bytes of the data type "Offset", that is, 2.
protected static byte	SHORT_BYTES The size, in bytes of the data type "SHORT", that is, 2.
protected static byte	UFWORD_BYTES The size, in bytes of the data type "UFWORD", that is, 2.
protected static byte	ULONG_BYTES The size, in bytes of the data type "ULONG", that is, 4.
protected static byte	USHORT_BYTES The size, in bytes of the data type "USHORT", that is, 2.

Constructor Summary

TTFTableGLYF(TTFOffsetTableRecord dirEntry)
Constructor.

Method Summary

static int	computeCompositeEntrySize(int compositeFlags) Computes the size, in bytes, of a composite entry, based on the flags for that entry.
String	getTableTag() Return the 4-character name of this table, for example, "post" or "glyf".
static boolean	hasMoreComponents(int compositeFlags) Indicates, from the flags, whether there are additional composite entries.
static TTFTableGLYF	parse(TTFOffsetTableRecord dirEntry, RandomAccessInput raInput, int numberOfGlyphs, TTFTableHMTX hmtx) Reads the "glyf" table to find the bounding boxes.

Methods inherited from class java.lang.Object

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

Field Detail

HEADER_SIZE

public static final byte HEADER_SIZE

The size, in bytes, of the header portion of this table.

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Constant Field Values

CF_BIT_ARG_1_AND_2_ARE_WORDS

public static final byte CF_BIT_ARG_1_AND_2_ARE_WORDS

The bit in the composite flag indicating ARG_1_AND_2_ARE_WORDS.

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Constant Field Values

CF_BIT_ARGS_ARE_XY_VALUES

public static final byte CF_BIT_ARGS_ARE_XY_VALUES

The bit in the composite flag indicating ARGS_ARE_XY_VALUES.

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Constant Field Values

CF_BIT_ROUND_XY_TO_GRID

public static final byte CF_BIT_ROUND_XY_TO_GRID

The bit in the composite flag indicating ROUND_XY_TO_GRID.

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Constant Field Values

CF_BIT_WE_HAVE_A_SCALE

public static final byte CF_BIT_WE_HAVE_A_SCALE

The bit in the composite flag indicating WE_HAVE_A_SCALE.

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Constant Field Values

CF_BIT_MORE_COMPONENTS

public static final byte CF_BIT_MORE_COMPONENTS

The bit in the composite flag indicating MORE_COMPONENTS.

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Constant Field Values

CF_BIT_WE_HAVE_AN_X_AND_Y_SCALE

public static final byte CF_BIT_WE_HAVE_AN_X_AND_Y_SCALE

The bit in the composite flag indicating WE_HAVE_AN_X_AND_Y_SCALE.

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Constant Field Values

CF_BIT_WE_HAVE_A_TWO_BY_TWO

public static final byte CF_BIT_WE_HAVE_A_TWO_BY_TWO

The bit in the composite flag indicating WE_HAVE_A_TWO_BY_TWO.

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Constant Field Values

CF_BIT_WE_HAVE_INSTRUCTIONS

public static final byte CF_BIT_WE_HAVE_INSTRUCTIONS

The bit in the composite flag indicating WE_HAVE_INSTRUCTIONS.

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Constant Field Values

CF_BIT_USE_MY_METRICS

public static final byte CF_BIT_USE_MY_METRICS

The bit in the composite flag indicating USE_MY_METRICS.

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Constant Field Values

BYTE_BYTES

protected static final byte BYTE_BYTES

The size, in bytes of the data type "BYTE", that is, 1.

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Constant Field Values

CHAR_BYTES

protected static final byte CHAR_BYTES

The size, in bytes of the data type "CHAR", that is, 1.

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Constant Field Values

USHORT_BYTES

protected static final byte USHORT_BYTES

The size, in bytes of the data type "USHORT", that is, 2.

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Constant Field Values

SHORT_BYTES

protected static final byte SHORT_BYTES

The size, in bytes of the data type "SHORT", that is, 2.

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Constant Field Values

ULONG_BYTES

protected static final byte ULONG_BYTES

The size, in bytes of the data type "ULONG", that is, 4.

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Constant Field Values

LONG_BYTES

protected static final byte LONG_BYTES

The size, in bytes of the data type "LONG", that is, 4.

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Constant Field Values

FIXED_BYTES

protected static final byte FIXED_BYTES

The size, in bytes of the data type "FIXED", that is, 4.

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Constant Field Values

FWORD_BYTES

protected static final byte FWORD_BYTES

The size, in bytes of the data type "FWORD", that is, 2.

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Constant Field Values

UFWORD_BYTES

protected static final byte UFWORD_BYTES

The size, in bytes of the data type "UFWORD", that is, 2.

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Constant Field Values

F2DOT14_BYTES

protected static final byte F2DOT14_BYTES

The size, in bytes of the data type "F2DOT14", that is, 2.

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Constant Field Values

LONG_DATE_TIME_BYTES

protected static final byte LONG_DATE_TIME_BYTES

The size, in bytes of the data type "International Date", that is, 8.

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Constant Field Values

OFFSET_BYTES

protected static final byte OFFSET_BYTES

The size, in bytes of the data type "Offset", that is, 2.

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Constant Field Values

Constructor Detail

TTFTableGLYF

public TTFTableGLYF(TTFOffsetTableRecord dirEntry)

Constructor.

Parameters:

dirEntry - The parent table directory entry.

Method Detail

parse

public static TTFTableGLYF parse(TTFOffsetTableRecord dirEntry,
                                 RandomAccessInput raInput,
                                 int numberOfGlyphs,
                                 TTFTableHMTX hmtx)
                          throws IOException

Reads the "glyf" table to find the bounding boxes.

Parameters:

dirEntry - The parent table directory entry.

raInput - The input which is being parsed.

numberOfGlyphs - The number of glyphs to be parsed. This data is derived from the "maxp" table.

hmtx - The related horizontal metrics (hmtx) table.

Returns:

The parsed instance.

Throws:

IOException - For I/O Error.

getTableTag

public String getTableTag()

Return the 4-character name of this table, for example, "post" or "glyf".

Returns:

The name of this table.

computeCompositeEntrySize

public static int computeCompositeEntrySize(int compositeFlags)

Computes the size, in bytes, of a composite entry, based on the flags for that entry.

Parameters:

compositeFlags - The flags for the entry.

Returns:

The size, in bytes, of the composite entry.

hasMoreComponents

public static boolean hasMoreComponents(int compositeFlags)

Indicates, from the flags, whether there are additional composite entries.

Parameters:

compositeFlags - The flags value.

Returns:

True iff there are more composite entries.