C++ (Cpp) hb_blob_create_empty示例

示例#1

文件： pango-ot-info.c 项目： alexp-sssup/pango

static hb_blob_t *
_get_table  (hb_tag_t tag, void *user_data)
{
  PangoOTInfo *info = (PangoOTInfo *) user_data;
  FT_Byte *buffer;
  FT_ULong  length = 0;
  FT_Error error;

  error = FT_Load_Sfnt_Table (info->face, tag, 0, NULL, &length);
  if (error)
    return hb_blob_create_empty ();

  buffer = g_malloc (length);
  if (buffer == NULL)
    return hb_blob_create_empty ();

  error = FT_Load_Sfnt_Table (info->face, tag, 0, buffer, &length);
  if (error)
    return hb_blob_create_empty ();

  return hb_blob_create ((const char *) buffer, length,
			 HB_MEMORY_MODE_WRITABLE,
			 g_free, buffer);
}

示例#2

文件： gfxDWriteFonts.cpp 项目： lofter2011/Icefox

hb_blob_t *
gfxDWriteFont::GetFontTable(PRUint32 aTag)
{
    const void *data;
    UINT32      size;
    void       *context;
    BOOL        exists;
    HRESULT hr = mFontFace->TryGetFontTable(NS_SWAP32(aTag),
                                            &data, &size, &context, &exists);
    if (SUCCEEDED(hr) && exists) {
        FontTableRec *ftr = new FontTableRec(mFontFace, context);
        return hb_blob_create(static_cast<const char*>(data), size,
                              HB_MEMORY_MODE_READONLY,
                              DestroyBlobFunc, ftr);
    }

    return hb_blob_create_empty();
}