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 and 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 Detail

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)