Package org.verapdf.pd.font

Class PDFontDescriptor

java.lang.Object
org.verapdf.pd.PDObject
org.verapdf.pd.font.PDFontDescriptor
public class PDFontDescriptor extends PDObject
Represents font descriptor.
Author:
Sergey Shemyakov

  • Constructor Details

    • PDFontDescriptor

      public PDFontDescriptor(COSObject obj)
      Constructor from font descriptor COSObject.
      Parameters:
      obj - is descriptor COSObject.

  • Method Details

    • getFlags

      public Long getFlags()
      Returns:
      a collection of flags defining various characteristics of the font.

    • getFontName

      public ASAtom getFontName()
      Returns:
      the PostScript name of the font.

    • getFontFamily

      public String getFontFamily()
      Returns:
      a byte string specifying the preferred font family name.

    • getFontStretch

      public ASAtom getFontStretch()
      Returns:
      the font stretch value.

    • getFontWeight

      public Double getFontWeight()
      Returns:
      the weight (thickness) component of the fully-qualified font name or font specifier.

    • isFixedPitch

      public boolean isFixedPitch()
      Returns:
      true if all glyphs have the same width.

    • isSerif

      public boolean isSerif()
      Returns:
      true if glyphs have serifs, which are short strokes drawn at an angle on the top and bottom of glyph stems.

    • isSymbolic

      public boolean isSymbolic()
      Returns:
      true if font contains glyphs outside the Adobe standard Latin character set.

    • isScript

      public boolean isScript()
      Returns:
      true if glyphs resemble cursive handwriting.

    • isNonsymbolic

      public boolean isNonsymbolic()
      Returns:
      true if font uses the Adobe standard Latin character set or a subset of it.

    • isItalic

      public boolean isItalic()
      Returns:
      true if glyphs have dominant vertical strokes that are slanted.

    • isAllCap

      public boolean isAllCap()
      Returns:
      true if font contains no lowercase letters; typically used for display purposes, such as for titles or headlines.

    • isSmallCap

      public boolean isSmallCap()
      Returns:
      true if font contains both uppercase and lowercase letters.

    • isForceBold

      public boolean isForceBold()
      Returns:
      true if bold glyphs shall be painted with extra pixels even at very small text sizes by a conforming reader.

    • getFontBoundingBox

      public double[] getFontBoundingBox()
      Returns:
      a rectangle, expressed in the glyph coordinate system, that shall specify the font bounding box.

    • getItalicAngle

      public Double getItalicAngle()
      Returns:
      the angle, expressed in degrees counterclockwise from the vertical, of the dominant vertical strokes of the font.

    • getAscent

      public Double getAscent()
      Returns:
      the maximum height above the baseline reached by glyphs in this font.

    • getDescent

      public Double getDescent()
      Returns:
      the maximum depth below the baseline reached by glyphs in this font.

    • getLeading

      public Double getLeading()
      Returns:
      the spacing between baselines of consecutive lines of text.

    • getCapHeight

      public Double getCapHeight()
      Returns:
      the vertical coordinate of the top of flat capital letters, measured from the baseline.

    • getXHeight

      public Double getXHeight()
      Returns:
      the font’s x height: the vertical coordinate of the top of flat nonascending lowercase letters (like the letter x), measured from the baseline, in fonts that have Latin characters.

    • getStemV

      public Double getStemV()
      Returns:
      the thickness, measured horizontally, of the dominant vertical stems of glyphs in the font.

    • getStemH

      public Double getStemH()
      Returns:
      the thickness, measured vertically, of the dominant horizontal stems of glyphs in the font.

    • getAvgWidth

      public Double getAvgWidth()
      Returns:
      the average width of glyphs in the font.

    • getMaxWidth

      public Double getMaxWidth()
      Returns:
      the maximum width of glyphs in the font.

    • getMissingWidth

      public Double getMissingWidth()
      Returns:
      the width to use for character codes whose widths are not specified in a font dictionary’s Widths array.

    • getCharSet

      public String getCharSet()
      Returns:
      a string listing the character names defined in a font subset.

    • getFontFile

      public COSStream getFontFile()
      Returns:
      a stream containing a Type 1 font program.

    • getFontFile2

      public COSStream getFontFile2()
      Returns:
      a stream containing a TrueType font program.

    • getFontFile3

      public COSStream getFontFile3()
      Returns:
      a stream containing a font program whose format is specified by the Subtype entry in the stream dictionary.

    • canParseFontFile

      public boolean canParseFontFile(ASAtom key)
      Checks if specific font program can be read from this font descriptor.
      Parameters:
      key - is key of font program in font descriptor dictionary, e.g. FontFile or FontFile2.
      Returns:
      true if value with this key exists and is a COSStream.

    • setFontName

      public void setFontName(ASAtom fontName)

    • setFontFamily

      public void setFontFamily(String fontFamily)

    • setFontStretch

      public void setFontStretch(ASAtom fontStretch)

    • setFontWeight

      public void setFontWeight(Double fontWeight)

    • setFixedPitch

      public void setFixedPitch(Boolean fixedPitch)

    • setSerif

      public void setSerif(Boolean serif)

    • setSymbolic

      public void setSymbolic(Boolean symbolic)

    • setScript

      public void setScript(Boolean script)

    • setNonSymblic

      public void setNonSymblic(Boolean nonSymblic)

    • setItalic

      public void setItalic(Boolean italic)

    • setAllCap

      public void setAllCap(Boolean allCap)

    • setSmallCup

      public void setSmallCup(Boolean smallCup)

    • setForceBold

      public void setForceBold(Boolean forceBold)

    • setFontBoundingBox

      public void setFontBoundingBox(double[] fontBoundingBox)

    • setItalicAngle

      public void setItalicAngle(Double italicAngle)

    • setAscent

      public void setAscent(Double ascent)

    • setDescent

      public void setDescent(Double descent)

    • setLeading

      public void setLeading(Double leading)

    • setCapHeight

      public void setCapHeight(Double capHeight)

    • setxHeight

      public void setxHeight(Double xHeight)

    • setStemV

      public void setStemV(Double stemV)

    • setStemH

      public void setStemH(Double stemH)

    • setAvgWidth

      public void setAvgWidth(Double avgWidth)

    • setMaxWidth

      public void setMaxWidth(Double maxWidth)

    • setMissingWidth

      public void setMissingWidth(Double missingWidth)

    • setCharSet

      public void setCharSet(String charSet)

    • getDescriptorFromMetrics

      public static PDFontDescriptor getDescriptorFromMetrics(StandardFontMetrics sfm)
      Constructs font descriptor for given standard font metrics.
      Parameters:
      sfm - is standard font metrics.
      Returns:
      font descriptor with fields set in accordance with sfm.