cidgload.h File Reference

#include <ft2build.h>
#include "cidobjs.h"

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Functions
FT_BEGIN_HEADER	cid_slot_load_glyph (FT_GlyphSlot glyph, FT_Size size, FT_UInt glyph_index, FT_Int32 load_flags)

Function Documentation

cid_slot_load_glyph()

FT_BEGIN_HEADER cid_slot_load_glyph	(	FT_GlyphSlot	glyph,
		FT_Size	size,
		FT_UInt	glyph_index,
		FT_Int32	load_flags
	)

Definition at line 337 of file cidgload.c.

  {
    CID_GlyphSlot  glyph = (CID_GlyphSlot)cidglyph;
    FT_Error       error;
#ifdef __REACTOS__
    T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec));
    if (!decoder) return FT_Err_Out_Of_Memory;
/* Ugly but it allows us to reduce the diff */
#define decoder (*decoder)
    {
#else
    T1_DecoderRec  decoder;
#endif
    CID_Face       face = (CID_Face)cidglyph->face;
    FT_Bool        hinting;
    FT_Bool        scaled;
 
    PSAux_Service  psaux = (PSAux_Service)face->psaux;
    FT_Matrix      font_matrix;
    FT_Vector      font_offset;
    FT_Bool        must_finish_decoder = FALSE;
 
 
    if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
    {
      error = FT_THROW( Invalid_Argument );
      goto Exit;
    }
 
    if ( load_flags & FT_LOAD_NO_RECURSE )
      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
 
    glyph->x_scale = cidsize->metrics.x_scale;
    glyph->y_scale = cidsize->metrics.y_scale;
 
    cidglyph->outline.n_points   = 0;
    cidglyph->outline.n_contours = 0;
 
    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 &&
                       ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
    scaled  = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 );
 
    glyph->hint      = hinting;
    glyph->scaled    = scaled;
    cidglyph->format = FT_GLYPH_FORMAT_OUTLINE;
 
    error = psaux->t1_decoder_funcs->init( &decoder,
                                           cidglyph->face,
                                           cidsize,
                                           cidglyph,
                                           0, /* glyph names -- XXX */
                                           0, /* blend == 0 */
                                           hinting,
                                           FT_LOAD_TARGET_MODE( load_flags ),
                                           cid_load_glyph );
    if ( error )
      goto Exit;
 
    /* TODO: initialize decoder.len_buildchar and decoder.buildchar */
    /*       if we ever support CID-keyed multiple master fonts     */
 
    must_finish_decoder = TRUE;
 
    /* set up the decoder */
    decoder.builder.no_recurse = FT_BOOL(
      ( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ) );
 
    error = cid_load_glyph( &decoder, glyph_index );
    if ( error )
      goto Exit;
 
    /* copy flags back for forced scaling */
    hinting = glyph->hint;
    scaled  = glyph->scaled;
 
    font_matrix = decoder.font_matrix;
    font_offset = decoder.font_offset;
 
    /* save new glyph tables */
    psaux->t1_decoder_funcs->done( &decoder );
 
    must_finish_decoder = FALSE;
 
    /* now set the metrics -- this is rather simple, as    */
    /* the left side bearing is the xMin, and the top side */
    /* bearing the yMax                                    */
    cidglyph->outline.flags &= FT_OUTLINE_OWNER;
    cidglyph->outline.flags |= FT_OUTLINE_REVERSE_FILL;
 
    /* for composite glyphs, return only left side bearing and */
    /* advance width                                           */
    if ( load_flags & FT_LOAD_NO_RECURSE )
    {
      FT_Slot_Internal  internal = cidglyph->internal;
 
 
      cidglyph->metrics.horiBearingX =
        FIXED_TO_INT( decoder.builder.left_bearing.x );
      cidglyph->metrics.horiAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );
 
      internal->glyph_matrix      = font_matrix;
      internal->glyph_delta       = font_offset;
      internal->glyph_transformed = 1;
    }
    else
    {
      FT_BBox            cbox;
      FT_Glyph_Metrics*  metrics = &cidglyph->metrics;
 
 
      /* copy the _unscaled_ advance width */
      metrics->horiAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );
      cidglyph->linearHoriAdvance =
        FIXED_TO_INT( decoder.builder.advance.x );
      cidglyph->internal->glyph_transformed = 0;
 
      /* make up vertical ones */
      metrics->vertAdvance        = ( face->cid.font_bbox.yMax -
                                      face->cid.font_bbox.yMin ) >> 16;
      cidglyph->linearVertAdvance = metrics->vertAdvance;
 
      cidglyph->format            = FT_GLYPH_FORMAT_OUTLINE;
 
      if ( cidsize->metrics.y_ppem < 24 )
        cidglyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
 
      /* apply the font matrix, if any */
      if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L ||
           font_matrix.xy != 0        || font_matrix.yx != 0        )
      {
        FT_Outline_Transform( &cidglyph->outline, &font_matrix );
 
        metrics->horiAdvance = FT_MulFix( metrics->horiAdvance,
                                          font_matrix.xx );
        metrics->vertAdvance = FT_MulFix( metrics->vertAdvance,
                                          font_matrix.yy );
      }
 
      if ( font_offset.x || font_offset.y )
      {
        FT_Outline_Translate( &cidglyph->outline,
                              font_offset.x,
                              font_offset.y );
 
        metrics->horiAdvance += font_offset.x;
        metrics->vertAdvance += font_offset.y;
      }
 
      if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || scaled )
      {
        /* scale the outline and the metrics */
        FT_Int       n;
        FT_Outline*  cur = decoder.builder.base;
        FT_Vector*   vec = cur->points;
        FT_Fixed     x_scale = glyph->x_scale;
        FT_Fixed     y_scale = glyph->y_scale;
 
 
        /* First of all, scale the points */
        if ( !hinting || !decoder.builder.hints_funcs )
          for ( n = cur->n_points; n > 0; n--, vec++ )
          {
            vec->x = FT_MulFix( vec->x, x_scale );
            vec->y = FT_MulFix( vec->y, y_scale );
          }
 
        /* Then scale the metrics */
        metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
        metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
      }
 
      /* compute the other metrics */
      FT_Outline_Get_CBox( &cidglyph->outline, &cbox );
 
      metrics->width  = cbox.xMax - cbox.xMin;
      metrics->height = cbox.yMax - cbox.yMin;
 
      metrics->horiBearingX = cbox.xMin;
      metrics->horiBearingY = cbox.yMax;
 
      if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
      {
        /* make up vertical ones */
        ft_synthesize_vertical_metrics( metrics,
                                        metrics->vertAdvance );
      }
    }
 
  Exit:
 
    if ( must_finish_decoder )
      psaux->t1_decoder_funcs->done( &decoder );
 
#ifdef __REACTOS__
    free(&decoder);
#undef decoder
    }
#endif
    return error;
  }