psfont.h File Reference

#include <freetype/internal/services/svcfftl.h>
#include "psft.h"
#include "psblues.h"

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Classes
struct	CF2_FontRec_

Macros
#define	CF2_OPERAND_STACK_SIZE   48
#define	CF2_MAX_SUBR   16 /* maximum subroutine nesting; */
#define	CF2_STORAGE_SIZE   32

Functions
	cf2_getGlyphOutline (CF2_Font font, CF2_Buffer charstring, const CF2_Matrix *transform, CF2_F16Dot16 *glyphWidth)

Macro Definition Documentation

CF2_MAX_SUBR

#define CF2_MAX_SUBR   16 /* maximum subroutine nesting; */

Definition at line 53 of file psfont.h.

CF2_OPERAND_STACK_SIZE

#define CF2_OPERAND_STACK_SIZE   48

Definition at line 52 of file psfont.h.

CF2_STORAGE_SIZE

#define CF2_STORAGE_SIZE   32

Definition at line 59 of file psfont.h.

Function Documentation

cf2_getGlyphOutline()

cf2_getGlyphOutline	(	CF2_Font	font,
		CF2_Buffer	charstring,
		const CF2_Matrix *	transform,
		CF2_F16Dot16 *	glyphWidth
	)

Definition at line 486 of file psfont.c.

  {
    FT_Error  lastError = FT_Err_Ok;
 
    FT_Vector  translation;
 
#if 0
    FT_Vector  advancePoint;
#endif
 
    CF2_Fixed  advWidth = 0;
    FT_Bool    needWinding;
 
 
    /* Note: use both integer and fraction for outlines.  This allows bbox */
    /*       to come out directly.                                         */
 
    translation.x = transform->tx;
    translation.y = transform->ty;
 
    /* set up values based on transform */
    cf2_font_setup( font, transform );
    if ( font->error )
      goto exit;                      /* setup encountered an error */
 
    /* reset darken direction */
    font->reverseWinding = FALSE;
 
    /* winding order only affects darkening */
    needWinding = font->darkened;
 
    while ( 1 )
    {
      /* reset output buffer */
      cf2_outline_reset( &font->outline );
 
      /* build the outline, passing the full translation */
      cf2_interpT2CharString( font,
                              charstring,
                              (CF2_OutlineCallbacks)&font->outline,
                              &translation,
                              FALSE,
                              0,
                              0,
                              &advWidth );
 
      if ( font->error )
        goto exit;
 
      if ( !needWinding )
        break;
 
      /* check winding order */
      if ( font->outline.root.windingMomentum >= 0 ) /* CFF is CCW */
        break;
 
      /* invert darkening and render again                            */
      /* TODO: this should be a parameter to getOutline-computeOffset */
      font->reverseWinding = TRUE;
 
      needWinding = FALSE;    /* exit after next iteration */
    }
 
    /* finish storing client outline */
    cf2_outline_close( &font->outline );
 
  exit:
    /* FreeType just wants the advance width; there is no translation */
    *glyphWidth = advWidth;
 
    /* free resources and collect errors from objects we've used */
    cf2_setError( &font->error, lastError );
 
    return font->error;
  }

Referenced by cf2_decoder_parse_charstrings().