Пример #1
0
static void add_char ( VGFont font, FT_Face face, FT_ULong c )
{
  // Pango already provides us with the font index, not the glyph UNICODE
  // point.

  FT_Load_Glyph( face, c, FT_LOAD_DEFAULT );

  FT_Outline *outline = &face->glyph->outline;

  VGPath path;
  path = vgCreatePath( VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
		       1.f, 0.f, 0, 0, VG_PATH_CAPABILITY_ALL );
  // It could be a blank. If any character doesn't have a glyph, though,
  // nothing is drawn by vgDrawGlyphs.
  if ( outline->n_contours > 0 ) {
    convert_outline( outline->points, outline->tags, outline->contours,
		     outline->n_contours, outline->n_points );
    vgAppendPathData( path, segments_count, segments, coords );
  }

  VGfloat origin[] = { 0.f, 0.f };
  VGfloat escapement[] = { float_from_26_6(face->glyph->advance.x),
			   float_from_26_6(face->glyph->advance.y) };

  vgSetGlyphToPath( font, c, path, VG_TRUE, origin, escapement );

  vgDestroyPath( path );
}
Пример #2
0
VCOS_STATUS_T vgft_font_convert_glyphs(VGFT_FONT_T *font, unsigned int char_height, unsigned int dpi_x, unsigned int dpi_y)
{
   FT_UInt glyph_index;
   FT_ULong ch;

   if (FT_Set_Char_Size(font->ft_face, 0, char_height, dpi_x, dpi_y))
   {
      FT_Done_Face(font->ft_face);
      vgDestroyFont(font->vg_font);
      return VCOS_EINVAL;
   }

   ch = FT_Get_First_Char(font->ft_face, &glyph_index);

   while (ch != 0)
   {
      if (FT_Load_Glyph(font->ft_face, glyph_index, FT_LOAD_DEFAULT)) {
         FT_Done_Face(font->ft_face);
         vgDestroyFont(font->vg_font);
         return VCOS_ENOMEM;
      }

      VGPath vg_path;
      FT_Outline *outline = &font->ft_face->glyph->outline;
      if (outline->n_contours != 0) {
         vg_path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
         assert(vg_path != VG_INVALID_HANDLE);

         convert_outline(outline->points, outline->tags, outline->contours, outline->n_contours, outline->n_points);
         vgAppendPathData(vg_path, segments_count, segments, coords);
      } else {
         vg_path = VG_INVALID_HANDLE;
      }

      VGfloat origin[] = { 0.0f, 0.0f };
      VGfloat escapement[] = { float_from_26_6(font->ft_face->glyph->advance.x), float_from_26_6(font->ft_face->glyph->advance.y) };
      vgSetGlyphToPath(font->vg_font, glyph_index, vg_path, VG_FALSE, origin, escapement);

      if (vg_path != VG_INVALID_HANDLE) {
         vgDestroyPath(vg_path);
      }
      ch = FT_Get_Next_Char(font->ft_face, ch, &glyph_index);
   }

   return VCOS_SUCCESS;
}