kc3-lang/harfbuzz/src/OT/glyf/GlyphHeader.hh

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• Hash : 9a0ebd2b
  Author :
  Date : 2022-12-22T10:21:07
  

  [glyf] Fix slant-scaling in GlyphHeader too
  

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• src/OT/glyf/GlyphHeader.hh

• #ifndef OT_GLYF_GLYPHHEADER_HH
  #define OT_GLYF_GLYPHHEADER_HH
  
  
  #include "../../hb-open-type.hh"
  
  
  namespace OT {
  namespace glyf_impl {
  
  
  struct GlyphHeader
  {
    bool has_data () const { return numberOfContours; }
  
    template <typename accelerator_t>
    bool get_extents_without_var_scaled (hb_font_t *font, const accelerator_t &glyf_accelerator,
  				       hb_codepoint_t gid, hb_glyph_extents_t *extents) const
    {
      /* Undocumented rasterizer behavior: shift glyph to the left by (lsb - xMin), i.e., xMin = lsb */
      /* extents->x_bearing = hb_min (glyph_header.xMin, glyph_header.xMax); */
      int lsb = hb_min (xMin, xMax);
      (void) glyf_accelerator.hmtx->get_leading_bearing_without_var_unscaled (gid, &lsb);
      extents->x_bearing = lsb;
      extents->y_bearing = hb_max (yMin, yMax);
      extents->width     = hb_max (xMin, xMax) - hb_min (xMin, xMax);
      extents->height    = hb_min (yMin, yMax) - hb_max (yMin, yMax);
  
      font->scale_glyph_extents (extents);
  
      return true;
    }
  
    HBINT16	numberOfContours;
  		    /* If the number of contours is
  		     * greater than or equal to zero,
  		     * this is a simple glyph; if negative,
  		     * this is a composite glyph. */
    FWORD	xMin;	/* Minimum x for coordinate data. */
    FWORD	yMin;	/* Minimum y for coordinate data. */
    FWORD	xMax;	/* Maximum x for coordinate data. */
    FWORD	yMax;	/* Maximum y for coordinate data. */
    public:
    DEFINE_SIZE_STATIC (10);
  };
  
  
  } /* namespace glyf_impl */
  } /* namespace OT */
  
  
  #endif /* OT_GLYF_GLYPHHEADER_HH */
  

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