Package com.adobe.fontengine.font.cff

Interface Type2Consumer

All Known Implementing Classes:
Type2ConsumerDefaultImpl
public interface Type2Consumer
Receives events as a Type2 charstring is parsed. There is one call per Type2 operator.

We have four virtual operators:

  • integer and fraction are called when an integer or fraction operand appearing in the Type2 charstring is pushed on the stack
  • implicit_vstemhm is called when there is an implicit vstemhm operator before a hintmask or cntrmask operator
  • width is called if the charstring contains an advance width; this call can happen in a seemingly random relationship to the other operators

Each call receives the current stack (which should not be modified, the interpreter will take care of popping the appropriate number of elements afterwards, and to push the result of operations if needed), and the stack depth. A few calls have additional arguments, as noted below.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    abs(double[] stack, int stackDepth)
     
    void
    add(double[] stack, int stackDepth)
     
    void
    and(double[] stack, int stackDepth)
     
    void
    callgsubr(double[] stack, int stackDepth, int subr)
     
    void
    callsubr(double[] stack, int stackDepth, int subr)
     
    void
    cntrmask(double[] stack, int stackDepth, com.adobe.fontengine.font.cff.CFFByteArray data, int offset, int length)
     
    void
    div(double[] stack, int stackDepth)
     
    void
    drop(double[] stack, int stackDepth)
     
    void
    dup(double[] stack, int stackDepth)
     
    void
    endchar(double[] stack, int stackDepth)
     
    void
    eq(double[] stack, int stackDepth)
     
    void
    exch(double[] stack, int stackDepth)
     
    void
    flex(double[] stack, int stackDepth)
     
    void
    flex1(double[] stack, int stackDepth)
     
    void
    get(double[] stack, int stackDepth)
     
    void
    globalColorMe(double[] stack, int stackDepth)
     
    void
    hflex(double[] stack, int stackDepth)
     
    void
    hflex1(double[] stack, int stackDepth)
     
    void
    hhcurveto(double[] stack, int stackDepth)
     
    void
    hintmask(double[] stack, int stackDepth, com.adobe.fontengine.font.cff.CFFByteArray data, int offset, int length)
     
    void
    hlineto(double[] stack, int stackDepth)
     
    void
    hmoveto(double[] stack, int stackDepth)
     
    void
    hstem(double[] stack, int stackDepth)
     
    void
    hstemhm(double[] stack, int stackDepth)
     
    void
    hvcurveto(double[] stack, int stackDepth)
     
    void
    ifelse(double[] stack, int stackDepth)
     
    void
    implicit_vstemhm(double[] stack, int stackDepth)
    Called when there is vstemhm operator implied by a hintmask or cntrmask operator.
    void
    index(double[] stack, int stackDepth)
     
    void
    integer(double[] stack, int stackDepth, int i)
     
    void
    moveto(double[] stack, int stackDepth)
    An absolute moveto (that is, a moveto that is not relative to the current point).
    void
    mul(double[] stack, int stackDepth)
     
    void
    neg(double[] stack, int stackDepth)
     
    void
    not(double[] stack, int stackDepth)
     
    void
    or(double[] stack, int stackDepth)
     
    void
    put(double[] stack, int stackDepth)
     
    void
    random(double[] stack, int stackDepth)
     
    void
    rcurveline(double[] stack, int stackDepth)
     
    void
    real(double[] stack, int stackDepth, double a)
     
    void
    return_op(double[] stack, int stackDepth)
     
    void
    rlinecurve(double[] stack, int stackDepth)
     
    void
    rlineto(double[] stack, int stackDepth)
     
    void
    rmoveto(double[] stack, int stackDepth)
     
    void
    roll(double[] stack, int stackDepth)
     
    void
    rrcurveto(double[] stack, int stackDepth)
     
    boolean
    seac(double[] stack, int stackDepth)
     
    void
    sqrt(double[] stack, int stackDepth)
     
    void
    sub(double[] stack, int stackDepth)
     
    void
    vhcurveto(double[] stack, int stackDepth)
     
    void
    vlineto(double[] stack, int stackDepth)
     
    void
    vmoveto(double[] stack, int stackDepth)
     
    void
    vstem(double[] stack, int stackDepth)
     
    void
    vstemhm(double[] stack, int stackDepth)
     
    void
    vvcurveto(double[] stack, int stackDepth)
     
    boolean
    width(double w)
     

  • Method Details

    • hstem

      void hstem(double[] stack, int stackDepth)

    • vstem

      void vstem(double[] stack, int stackDepth)

    • vmoveto

      void vmoveto(double[] stack, int stackDepth)

    • rlineto

      void rlineto(double[] stack, int stackDepth)

    • hlineto

      void hlineto(double[] stack, int stackDepth)

    • vlineto

      void vlineto(double[] stack, int stackDepth)

    • rrcurveto

      void rrcurveto(double[] stack, int stackDepth)

    • callsubr

      void callsubr(double[] stack, int stackDepth, int subr)
      Parameters:
      subr - the index of the local subroutine which is called.

    • return_op

      void return_op(double[] stack, int stackDepth)

    • and

      void and(double[] stack, int stackDepth)

    • or

      void or(double[] stack, int stackDepth)

    • not

      void not(double[] stack, int stackDepth)

    • abs

      void abs(double[] stack, int stackDepth)

    • add

      void add(double[] stack, int stackDepth)

    • sub

      void sub(double[] stack, int stackDepth)

    • div

      void div(double[] stack, int stackDepth)

    • neg

      void neg(double[] stack, int stackDepth)

    • eq

      void eq(double[] stack, int stackDepth)

    • drop

      void drop(double[] stack, int stackDepth)

    • put

      void put(double[] stack, int stackDepth)

    • get

      void get(double[] stack, int stackDepth)

    • ifelse

      void ifelse(double[] stack, int stackDepth)

    • random

      void random(double[] stack, int stackDepth)

    • mul

      void mul(double[] stack, int stackDepth)

    • sqrt

      void sqrt(double[] stack, int stackDepth)

    • dup

      void dup(double[] stack, int stackDepth)

    • exch

      void exch(double[] stack, int stackDepth)

    • index

      void index(double[] stack, int stackDepth)

    • roll

      void roll(double[] stack, int stackDepth)

    • hflex

      void hflex(double[] stack, int stackDepth)

    • flex

      void flex(double[] stack, int stackDepth)

    • hflex1

      void hflex1(double[] stack, int stackDepth)

    • flex1

      void flex1(double[] stack, int stackDepth)

    • endchar

      void endchar(double[] stack, int stackDepth)

    • hstemhm

      void hstemhm(double[] stack, int stackDepth)

    • hintmask

      void hintmask(double[] stack, int stackDepth, com.adobe.fontengine.font.cff.CFFByteArray data, int offset, int length) throws InvalidFontException
      Parameters:
      data - holds the charstring (or subroutine) being interpreted
      offset - the index of the first byte representing the hintmask
      length - the number of bytes in the hintmask
      Throws:
      InvalidFontException

    • cntrmask

      void cntrmask(double[] stack, int stackDepth, com.adobe.fontengine.font.cff.CFFByteArray data, int offset, int length) throws InvalidFontException
      Parameters:
      data - holds the charstring (or subroutine) being interpreted
      offset - the index of the first byte representing the cntrmask
      length - the number of bytes in the cntrmask
      Throws:
      InvalidFontException

    • rmoveto

      void rmoveto(double[] stack, int stackDepth)

    • hmoveto

      void hmoveto(double[] stack, int stackDepth)

    • moveto

      void moveto(double[] stack, int stackDepth)
      An absolute moveto (that is, a moveto that is not relative to the current point). stack[0] contains the new x. stack[1] contains the new y.

    • vstemhm

      void vstemhm(double[] stack, int stackDepth)

    • implicit_vstemhm

      void implicit_vstemhm(double[] stack, int stackDepth)
      Called when there is vstemhm operator implied by a hintmask or cntrmask operator.

    • rcurveline

      void rcurveline(double[] stack, int stackDepth)

    • rlinecurve

      void rlinecurve(double[] stack, int stackDepth)

    • vvcurveto

      void vvcurveto(double[] stack, int stackDepth)

    • hhcurveto

      void hhcurveto(double[] stack, int stackDepth)

    • callgsubr

      void callgsubr(double[] stack, int stackDepth, int subr)
      Parameters:
      subr - the index of the global subroutine which is called.

    • vhcurveto

      void vhcurveto(double[] stack, int stackDepth)

    • hvcurveto

      void hvcurveto(double[] stack, int stackDepth)

    • integer

      void integer(double[] stack, int stackDepth, int i)
      Parameters:
      i - the integer which is pushed on the stack by an integer operator.

    • real

      void real(double[] stack, int stackDepth, double a)
      Parameters:
      a - the real number which is pushed on the stack by a 5 byte number operator.

    • width

      boolean width(double w)
      Parameters:
      w - the width recorded in the charstring, to be added to the nominal width of the font; if this method is not called, the width of this outline is the default width of the font.
      Returns:
      true iff parsing should continue

    • seac

      boolean seac(double[] stack, int stackDepth)
      Parameters:
      stack - the stack containing the following params: Optionally, the advance width. If the stackDepth is 5, the first element on the stack is the width. adx: the horizontal position of the accent character relative to the base character's origin. ady: the vertical position of the accent character relative to the base character's origin. bchar: the character code of the base character in Standard Encoding. achar: the character code of the accent character in Standard Encoding.
      Returns:
      true if the parser should parse the base and accent characters. false if parsing should not recurse into those characters.

    • globalColorMe

      void globalColorMe(double[] stack, int stackDepth)