Multivalent API

com.pt.awt
Class NFont

java.lang.Object
  extended by com.pt.awt.NFont
Direct Known Subclasses:
com.pt.awt.font.NFontSimple

public abstract class NFont
extends java.lang.Object

Superclass for new fonts, which provide more control than java.awt.Font. (NFont is a complete font implementation from scratch, and does not use java.awt.Font.) Usage is patterned after Font, except that drawing is a method on the font rather than a special case of Graphics2D.

Version:
$Revision: 1.34 $ $Date: 2005/07/23 00:04:00 $

Field Summary
static double AFM_SCALE
          Default coordinate scaling factor.
protected  java.awt.geom.AffineTransform at_
           
static int FLAG_ALLCAP
           
static int FLAG_CONDENSED
          Condensed (narrow) (non-Adobe).
static int FLAG_DEFAULT
           
static int FLAG_EXPANDED
          Expanded (wide) (non-Adobe).
static int FLAG_FIXEDPITCH
           
static int FLAG_FORCEBOLD
          Force boldface even at small point sizes.
static int FLAG_ITALIC
           
static int FLAG_NONE
           
static int FLAG_NONSYMBOLIC
          Standard Latin character set.
static int FLAG_ORNAMENTAL
          Ornamental (non-Adobe).
static int FLAG_SANSSERIF
          Opposite of FLAG_SERIF.
static int FLAG_SCRIPT
           
static int FLAG_SERIF
           
static int FLAG_SMALLCAP
           
static int FLAG_SYMBOLIC
          Not exactly standard Latin; though could be close.
static long LAYOUT_FALLBACK
          Allow font fallback, if in Unicode.
static long LAYOUT_KERN
           
static long LAYOUT_LIGATURE
           
static long LAYOUT_MINIMUM
          Convenience: Minimum formatting necessary for correctness: formatting (tab, softhyphen), (only) necessary ligatures (as in Arabic), font fallback.
static long LAYOUT_NONE
          Do no layout: map every character to a separate glyph, if possible, including control, formatting, and combining marks code points.
static long LAYOUT_NORMAL
          Convenience: Usual text display, including fallback, ligatures and kerning.
static long LAYOUT_SMALLCAPS
           
static long LAYOUT_SWASH
           
static com.pt.lang.UnicodeBlocks[] MASKS_NONE
           
protected  java.awt.geom.Rectangle2D max_
           
static int MODE_ADD
          Add text to path for clipping.
static int MODE_FILL
          Fill text [usual].
static int MODE_FILL_ADD
          Fill text and add to path for clipping.
static int MODE_FILL_STROKE
          Fill, then stroke, text.
static int MODE_FILL_STROKE_ADD
          Fill, then stroke, text and add to path for clipping.
static int MODE_INVALID
           
static int MODE_INVISIBLE
          Neither fill nor stroke text (invisible) [used in scanned paper].
static int MODE_STROKE
          Stroke text [outline].
static int MODE_STROKE_ADD
          Stroke text and add to path for clipping.
static java.lang.String NOTDEF
           
static char NOTDEF_CHAR
           
static char NOTVALID_CHAR
           
static int RIGHT_BITMAP
          Bitmap embedding only.
static int RIGHT_EDITABLE
          Editable embedding.
static int RIGHT_HEURISTIC
          Rights not directly available to programmatically, and so were heuristically estimated, as by scanning text for legal language.
static int RIGHT_INSTALL
          Installable Embedding.
static int RIGHT_LICENSED
          Fonts subject to a licensing agreement are legally protected or licensed.
static int RIGHT_NONCOMMERCIAL
          Right to use for non-commercial purposes.
static int RIGHT_NOSUBSET
          No subsetting.
static int RIGHT_PREVIEW_PRINT
          Print and preview embedding.
static int RIGHT_RESTRICTED
          Font (if only this bit set) must not be modified, embedded or exchanged in any manner without first obtaining permission of the legal owner.
static int RIGHT_UNKNOWN
          Rights could not be determined programmatically from font data.
protected  float size_
           
static java.lang.String SUBFORMAT_NONE
           
protected  com.pt.awt.font.CMap touni_
           
static int WEIGHT_BLACK
          Black (aka Heavy)
static int WEIGHT_BOLD
          Bold
static int WEIGHT_EXTRABOLD
          Extra-Bold (aka Ultra-bold)
static int WEIGHT_EXTRALIGHT
          Extra-light (aka Ultra-light)
static int WEIGHT_LIGHT
          Light
static int WEIGHT_MEDIUM
          Medium
static int WEIGHT_NORMAL
          Normal (aka Regular)
static int WEIGHT_SEMIBOLD
          Semi-bold (aka Demi-bold)
static int WEIGHT_THIN
          Thin
 
Constructor Summary
protected NFont(java.net.URL source)
          Constructor, with source of font data, which may be null.
 
Method Summary
 boolean canDisplay(int codepoint)
          Can the Unicode codepoint be rendered?
abstract  boolean canDisplayEchar(int ech)
          Can the character ech in the font's encoding be rendered?
 java.awt.geom.Point2D charAdvance(int codepoint)
           
 NFont deriveFont(java.awt.geom.AffineTransform at)
          Transform all glyphs by arbitrary affine transform.
 NFont deriveFont(float pointsize)
          Creates font a new pointsize in pixels.
abstract  void drawEstring(java.awt.Graphics2D g, java.lang.String estr, float x, float y, long layout, int mode, java.awt.Color strokecolor)
          Draws string str in font's encoding at (x,y) in drawing mode mode.
 void drawString(java.awt.Graphics2D g, java.lang.String uni, float x, float y)
          Convenience method for drawing string in fill mode.
 void drawString(java.awt.Graphics2D g, java.lang.String uni, float x, float y, long layout, int mode, java.awt.Color strokecolor)
          Translates Unicode string uni to this font's encoding and invokes drawEstring(Graphics2D, String, float, float, long,int, Color).
abstract  java.awt.geom.Point2D echarAdvance(int ech)
           
 java.awt.geom.Point2D estringAdvance(java.lang.String estr, int beginIndex, int limit)
           
 java.lang.String fromUnicode(java.lang.String unicode)
          Translates Unicode characters into current encoding.
 float getAscent()
          Returns design ascent of glyphs above baseline (usually a negative number, which is up in Java2D coordinate space).
 java.lang.String getCopyright()
          Returns copyright, or empty string if unknown.
 float getDescent()
          Returns maximum descent of glyphs below baseline.
 java.lang.String getDesigner()
          Returns name of font's designer, or empty string if unknown.
 java.awt.geom.Rectangle2D getEstringBounds(java.lang.String estr, int beginIndex, int limit)
           
abstract  java.lang.String getFamily()
          Returns name of font, such as "Times".
 int getFlags()
          Returns additional flags bit mask, such as FLAG_ITALIC and FLAG_FIXEDPITCH.
abstract  java.lang.String getFormat()
          Returns primary format, such as "Type1" or "OpenType".
 float getHeight()
          Returns design height of glyphs.
static NFont getInstance(java.lang.String family, int weight, int flags, float size)
          Given family name (such as Times), weight and flags, returns best matching font, at point size size pixels.
 float getLeading()
          Returns recommended leading, for single spacing.
static java.util.logging.Logger getLogger()
          Interesting events are logged to this logger
abstract  java.awt.geom.Rectangle2D getMaxCharBounds()
          Returns left in rectangle's x, ascent in y, width in width, height in height.
 int getMaxGlyphNum()
          Returns highest glyph index + 1, which may be larger than getNumGlyphs() if some "slots" are empty.
protected static com.pt.io.RandomAccessMultiplex getMultiplex()
          Returns file descriptor multiplexer shared among all NFonts.
abstract  java.lang.String getName()
          Returns the PostScript name of font, such as "Times-Roman".
abstract  int getNumGlyphs()
          Returns number of glyphs defined in font.
 int getRights()
          Returns font usage rights bit mask.
 float getSize()
          Returns size in pixels.
 java.net.URL getSource()
          Returns font's source file or URL, which is usually a file, or null if font was created from byte[] or other non-addressible source.
abstract  char getSpaceEchar()
          Returns the character that seems to be used as a space in the current encoding, or NOTDEF_CHAR if no such character.
 java.awt.geom.Rectangle2D getStringBounds(java.lang.String str)
          Logical origin, ascent, advance, and height (includes leading).
 java.awt.geom.Rectangle2D getStringBounds(java.lang.String str, int beginIndex, int limit)
           
 java.lang.String getSubformat()
          Returns secondary format, such as "CFF/CID" under primary format "CFF".
 java.awt.geom.AffineTransform getTransform()
          Returns a copy of the transform associated with this NFont.
 com.pt.lang.UnicodeBlocks[] getUnicode()
          Returns Unicode ranges for which font has various levels of coverage: [0] = existence (at least one glyph), [1] = "good" coverage (of visible glyphs), and [2] = full coverage.
 java.lang.String getVersion()
          Returns version of font, or empty string if there is no version or it is not applicable.
 int getWeight()
          Returns weight, such as WEIGHT_BOLD.
 boolean isHinted()
          Returns true iff font has hinted outlines, which in Type 1 and TrueType is a sign of higher quality.
 boolean isTransformed()
          Returns whether the affine transform is the identity transform without creating a copy.
static boolean isUseBitmaps()
           
 void setManager(com.pt.awt.font.NFontManager fm)
          Sets the font's manager, or null for none.
static void setUseBitmaps(boolean b)
          To increase performance, some subclasses may cached glyphs as bitmaps, and in accelerated video memory in Java 5 and later.
static java.lang.String strFlags(int flags)
          Decodes flag bit positions into humand-readable string.
 java.awt.geom.Point2D stringAdvance(java.lang.String uni)
           
 java.awt.geom.Point2D stringAdvance(java.lang.String uni, int beginIndex, int limit)
           
static java.lang.String strRights(int rights)
           
static java.lang.String strWeight(int weight)
           
 java.lang.String toString()
           
 java.lang.String toUnicode(java.lang.String encoded)
          Translates characters in current encoding into Unicode.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

FLAG_NONE

public static final int FLAG_NONE
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FLAG_FIXEDPITCH

public static final int FLAG_FIXEDPITCH
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FLAG_SERIF

public static final int FLAG_SERIF
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FLAG_SANSSERIF

public static final int FLAG_SANSSERIF
Opposite of FLAG_SERIF.

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FLAG_SYMBOLIC

public static final int FLAG_SYMBOLIC
Not exactly standard Latin; though could be close. This follows the Adobe definition and does NOT mean dingbat glyphs as in Symbol or Zapf Dingbats. And it's redundant with FLAG_NONSYMBOLIC.

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FLAG_SCRIPT

public static final int FLAG_SCRIPT
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FLAG_NONSYMBOLIC

public static final int FLAG_NONSYMBOLIC
Standard Latin character set.

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FLAG_ITALIC

public static final int FLAG_ITALIC
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FLAG_ALLCAP

public static final int FLAG_ALLCAP
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FLAG_SMALLCAP

public static final int FLAG_SMALLCAP
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FLAG_FORCEBOLD

public static final int FLAG_FORCEBOLD
Force boldface even at small point sizes.

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FLAG_CONDENSED

public static final int FLAG_CONDENSED
Condensed (narrow) (non-Adobe).

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FLAG_EXPANDED

public static final int FLAG_EXPANDED
Expanded (wide) (non-Adobe).

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FLAG_ORNAMENTAL

public static final int FLAG_ORNAMENTAL
Ornamental (non-Adobe).

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FLAG_DEFAULT

public static final int FLAG_DEFAULT
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WEIGHT_THIN

public static final int WEIGHT_THIN
Thin

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WEIGHT_EXTRALIGHT

public static final int WEIGHT_EXTRALIGHT
Extra-light (aka Ultra-light)

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WEIGHT_LIGHT

public static final int WEIGHT_LIGHT
Light

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WEIGHT_NORMAL

public static final int WEIGHT_NORMAL
Normal (aka Regular)

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WEIGHT_MEDIUM

public static final int WEIGHT_MEDIUM
Medium

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WEIGHT_SEMIBOLD

public static final int WEIGHT_SEMIBOLD
Semi-bold (aka Demi-bold)

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WEIGHT_BOLD

public static final int WEIGHT_BOLD
Bold

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WEIGHT_EXTRABOLD

public static final int WEIGHT_EXTRABOLD
Extra-Bold (aka Ultra-bold)

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WEIGHT_BLACK

public static final int WEIGHT_BLACK
Black (aka Heavy)

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MODE_FILL

public static final int MODE_FILL
Fill text [usual].

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MODE_STROKE

public static final int MODE_STROKE
Stroke text [outline].

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MODE_FILL_STROKE

public static final int MODE_FILL_STROKE
Fill, then stroke, text.

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MODE_INVISIBLE

public static final int MODE_INVISIBLE
Neither fill nor stroke text (invisible) [used in scanned paper].

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MODE_FILL_ADD

public static final int MODE_FILL_ADD
Fill text and add to path for clipping.

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MODE_STROKE_ADD

public static final int MODE_STROKE_ADD
Stroke text and add to path for clipping.

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MODE_FILL_STROKE_ADD

public static final int MODE_FILL_STROKE_ADD
Fill, then stroke, text and add to path for clipping.

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MODE_ADD

public static final int MODE_ADD
Add text to path for clipping.

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MODE_INVALID

public static final int MODE_INVALID
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RIGHT_INSTALL

public static final int RIGHT_INSTALL
Installable Embedding.

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RIGHT_LICENSED

public static final int RIGHT_LICENSED
Fonts subject to a licensing agreement are legally protected or licensed. Must check licensing manually. (Apple only; reserved in Adobe/Microsoft.)

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RIGHT_RESTRICTED

public static final int RIGHT_RESTRICTED
Font (if only this bit set) must not be modified, embedded or exchanged in any manner without first obtaining permission of the legal owner.

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RIGHT_PREVIEW_PRINT

public static final int RIGHT_PREVIEW_PRINT
Print and preview embedding.

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RIGHT_EDITABLE

public static final int RIGHT_EDITABLE
Editable embedding.

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RIGHT_NOSUBSET

public static final int RIGHT_NOSUBSET
No subsetting.

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RIGHT_BITMAP

public static final int RIGHT_BITMAP
Bitmap embedding only.

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RIGHT_NONCOMMERCIAL

public static final int RIGHT_NONCOMMERCIAL
Right to use for non-commercial purposes.

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RIGHT_HEURISTIC

public static final int RIGHT_HEURISTIC
Rights not directly available to programmatically, and so were heuristically estimated, as by scanning text for legal language.

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RIGHT_UNKNOWN

public static final int RIGHT_UNKNOWN
Rights could not be determined programmatically from font data. This is because either font format does not support this or because the information was not reported. Whether to interpret this as permitting embedding in PDF is left to the caller.

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LAYOUT_NONE

public static final long LAYOUT_NONE
Do no layout: map every character to a separate glyph, if possible, including control, formatting, and combining marks code points. Used if glyph selection and positioning fully controlled by application, or precomputed as in PDF and DVI.

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LAYOUT_FALLBACK

public static final long LAYOUT_FALLBACK
Allow font fallback, if in Unicode. That is, if a font is missing a glyph, try to find it in another font.

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LAYOUT_LIGATURE

public static final long LAYOUT_LIGATURE
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LAYOUT_SMALLCAPS

public static final long LAYOUT_SMALLCAPS
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LAYOUT_SWASH

public static final long LAYOUT_SWASH
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LAYOUT_KERN

public static final long LAYOUT_KERN
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LAYOUT_MINIMUM

public static final long LAYOUT_MINIMUM
Convenience: Minimum formatting necessary for correctness: formatting (tab, softhyphen), (only) necessary ligatures (as in Arabic), font fallback.

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LAYOUT_NORMAL

public static final long LAYOUT_NORMAL
Convenience: Usual text display, including fallback, ligatures and kerning.

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MASKS_NONE

public static final com.pt.lang.UnicodeBlocks[] MASKS_NONE

SUBFORMAT_NONE

public static final java.lang.String SUBFORMAT_NONE
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NOTDEF

public static final java.lang.String NOTDEF
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NOTDEF_CHAR

public static final char NOTDEF_CHAR
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NOTVALID_CHAR

public static final char NOTVALID_CHAR
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AFM_SCALE

public static final double AFM_SCALE
Default coordinate scaling factor.

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touni_

protected com.pt.awt.font.CMap touni_

size_

protected float size_

at_

protected java.awt.geom.AffineTransform at_

max_

protected java.awt.geom.Rectangle2D max_
Constructor Detail

NFont

protected NFont(java.net.URL source)
Constructor, with source of font data, which may be null.

Method Detail

getInstance

public static NFont getInstance(java.lang.String family,
                                int weight,
                                int flags,
                                float size)
Given family name (such as Times), weight and flags, returns best matching font, at point size size pixels. Font has Unicode encoding, if possible; font can be recoded. Uses system font manager to find font files in file system and match to requested.


setUseBitmaps

public static void setUseBitmaps(boolean b)
To increase performance, some subclasses may cached glyphs as bitmaps, and in accelerated video memory in Java 5 and later. This is not always desirable because it prevents subpixel positioning, is in fact slower on OS X due to a performance bug in bitmap bitblt'ting, and is not needed on 2GHz or faster machines. The default setting is undefined. Bitmap use can be turned on by the user at runtime, with the command line option -Dfont.usebitmaps=true.


isUseBitmaps

public static boolean isUseBitmaps()

deriveFont

public NFont deriveFont(float pointsize)
Creates font a new pointsize in pixels. Callers may want to adjust for screen pixels per inch. Note to subclassers: you must make a complete independent instance of the font here, even if pointsize and everything else is the same, as other deriveFont methods use this to make a clone and might make subsequent changes.


deriveFont

public NFont deriveFont(java.awt.geom.AffineTransform at)
Transform all glyphs by arbitrary affine transform. Note that this sets the absolute transform -- new transforms replace previous ones and do not concatenate together.


getName

public abstract java.lang.String getName()
Returns the PostScript name of font, such as "Times-Roman". This is different than the display name and the filename.


getFamily

public abstract java.lang.String getFamily()
Returns name of font, such as "Times".


getSource

public java.net.URL getSource()
Returns font's source file or URL, which is usually a file, or null if font was created from byte[] or other non-addressible source.


getVersion

public java.lang.String getVersion()
Returns version of font, or empty string if there is no version or it is not applicable.


getDesigner

public java.lang.String getDesigner()
Returns name of font's designer, or empty string if unknown.


getCopyright

public java.lang.String getCopyright()
Returns copyright, or empty string if unknown.


getRights

public int getRights()
Returns font usage rights bit mask.


getFormat

public abstract java.lang.String getFormat()
Returns primary format, such as "Type1" or "OpenType".


getSubformat

public java.lang.String getSubformat()
Returns secondary format, such as "CFF/CID" under primary format "CFF".


getNumGlyphs

public abstract int getNumGlyphs()
Returns number of glyphs defined in font.


getMaxGlyphNum

public int getMaxGlyphNum()
Returns highest glyph index + 1, which may be larger than getNumGlyphs() if some "slots" are empty.


getUnicode

public com.pt.lang.UnicodeBlocks[] getUnicode()
Returns Unicode ranges for which font has various levels of coverage: [0] = existence (at least one glyph), [1] = "good" coverage (of visible glyphs), and [2] = full coverage.


isHinted

public boolean isHinted()
Returns true iff font has hinted outlines, which in Type 1 and TrueType is a sign of higher quality.


getSize

public float getSize()
Returns size in pixels.


getWeight

public int getWeight()
Returns weight, such as WEIGHT_BOLD.


getFlags

public int getFlags()
Returns additional flags bit mask, such as FLAG_ITALIC and FLAG_FIXEDPITCH.


getTransform

public java.awt.geom.AffineTransform getTransform()
Returns a copy of the transform associated with this NFont.


isTransformed

public boolean isTransformed()
Returns whether the affine transform is the identity transform without creating a copy.


setManager

public void setManager(com.pt.awt.font.NFontManager fm)
Sets the font's manager, or null for none.


toUnicode

public java.lang.String toUnicode(java.lang.String encoded)
Translates characters in current encoding into Unicode.


fromUnicode

public java.lang.String fromUnicode(java.lang.String unicode)
Translates Unicode characters into current encoding. If there is no Unicode mapping for the character, the character NOTDEF_CHAR is returned.


getSpaceEchar

public abstract char getSpaceEchar()
Returns the character that seems to be used as a space in the current encoding, or NOTDEF_CHAR if no such character.


stringAdvance

public java.awt.geom.Point2D stringAdvance(java.lang.String uni)

stringAdvance

public java.awt.geom.Point2D stringAdvance(java.lang.String uni,
                                           int beginIndex,
                                           int limit)

estringAdvance

public java.awt.geom.Point2D estringAdvance(java.lang.String estr,
                                            int beginIndex,
                                            int limit)

charAdvance

public java.awt.geom.Point2D charAdvance(int codepoint)

echarAdvance

public abstract java.awt.geom.Point2D echarAdvance(int ech)

getStringBounds

public java.awt.geom.Rectangle2D getStringBounds(java.lang.String str)
Logical origin, ascent, advance, and height (includes leading).


getStringBounds

public java.awt.geom.Rectangle2D getStringBounds(java.lang.String str,
                                                 int beginIndex,
                                                 int limit)

getEstringBounds

public java.awt.geom.Rectangle2D getEstringBounds(java.lang.String estr,
                                                  int beginIndex,
                                                  int limit)

getMaxCharBounds

public abstract java.awt.geom.Rectangle2D getMaxCharBounds()
Returns left in rectangle's x, ascent in y, width in width, height in height. Note that some fonts lie about their max bounds.


getHeight

public float getHeight()
Returns design height of glyphs.


getAscent

public float getAscent()
Returns design ascent of glyphs above baseline (usually a negative number, which is up in Java2D coordinate space).


getDescent

public float getDescent()
Returns maximum descent of glyphs below baseline.


getLeading

public float getLeading()
Returns recommended leading, for single spacing.


canDisplay

public boolean canDisplay(int codepoint)
Can the Unicode codepoint be rendered?


canDisplayEchar

public abstract boolean canDisplayEchar(int ech)
Can the character ech in the font's encoding be rendered?


drawString

public void drawString(java.awt.Graphics2D g,
                       java.lang.String uni,
                       float x,
                       float y)
Convenience method for drawing string in fill mode.


drawString

public void drawString(java.awt.Graphics2D g,
                       java.lang.String uni,
                       float x,
                       float y,
                       long layout,
                       int mode,
                       java.awt.Color strokecolor)
Translates Unicode string uni to this font's encoding and invokes drawEstring(Graphics2D, String, float, float, long,int, Color). Note that some fonts contain characters without Unicode mappings and therefore cannot be shown with this method; in that case, use drawEstring(Graphics2D, String, float, float, long,int, Color). If the font cannot display the Unicode characters and it is managed by a font manager (which it is ordinarily) then drawing will try to find the Unicode glyphs in other fonts in the font manager.


drawEstring

public abstract void drawEstring(java.awt.Graphics2D g,
                                 java.lang.String estr,
                                 float x,
                                 float y,
                                 long layout,
                                 int mode,
                                 java.awt.Color strokecolor)
Draws string str in font's encoding at (x,y) in drawing mode mode. For good results, set the RenderingHints.KEY_ANTIALIASING hint on the Graphics2D.


strFlags

public static java.lang.String strFlags(int flags)
Decodes flag bit positions into humand-readable string.


strWeight

public static java.lang.String strWeight(int weight)

strRights

public static java.lang.String strRights(int rights)

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object

getMultiplex

protected static com.pt.io.RandomAccessMultiplex getMultiplex()
Returns file descriptor multiplexer shared among all NFonts. Applications can use many fonts, requiring many file descriptors. Fonts should share file descriptors, taking as needed and releasing when possible, so as not to exhaust the system.


getLogger

public static java.util.logging.Logger getLogger()
Interesting events are logged to this logger , at the following use of logging levels: Level.CONFIG font path, fonts found; Level.FINE font creation.


Multivalent API