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让fastreport3.x支持中文pdf的输出

procedure tfrxpdffont.savetostream(stream: tstream);
var
  s: string;
  b: tbitmap;
  pm: ^outl.netextmetric;
  fontname: string;
  i: cardinal;
  pfont: pchar;
  firstchar, lastchar : integer;
  memstream: tmemorystream;
  memstream1: tmemorystream;
  pwidths: pabc;
  charset: tfontcharset;

  // support dbcs font name encoding
  function encodefontname(afontname: string): string;
  var
    s: string;
    index, len: integer;
  begin
    // add begin by ijia 2004.12.20
    // 修正在简体系统下繁体字体名的问题
    // 只提供 mingliu, pmingliu --> 细明体, 新细明体的修正
    s:=uppercase(afontname);
    if copy(s, 1, 7)='mingliu' then
      afontname:='细明体';
   
    if copy(s, 1, 8)='pmingliu' then
      afontname:='新细明体';
    // add end
    s := '';
    len := length(afontname);
    index := 0;
    while index < len do
    begin
      index := index + 1;
      if byte(afontname[index]) > $7f then
        s := s + '#' + inttohex(byte(afontname[index]), 2)
      else
        s := s + afontname[index];
    end;
    result := s;
  end;

begin
  inherited savetostream(stream);
  b := tbitmap.create;
  b.canvas.font.assign(font);
  b.canvas.font.size := 750;
  i := getoutl.netextmetrics(b.canvas.handle, 0, nil);
  getmem(pm, i);
  getoutl.netextmetrics(b.canvas.handle, i, pm);
  firstchar := ord(pm.otmtextmetrics.tmfirstchar);
  lastchar := ord(pm.otmtextmetrics.tmlastchar);
  fontname := stringreplace(font.name, ' ', '#20', [rfreplaceall]);
  s := '';
  if fsbold in font.style then
    s := s + 'bold';
  if fsitalic in font.style then
    s := s + 'italic';
  if s <> '' then
    fontname := fontname + ',' + s;

  charset := pm.otmtextmetrics.tmcharset;
  // add by ijia 2004.12.20
  //if charset = chinesebig5_charset then
  if charset in [chinesebig5_charset, gb2312_charset] then
    fontname := encodefontname(fontname)
  else
    fontname := parent.ptool.preparestring(fontname);

  parent.xrefadd(stream);
  writeln(stream, inttostr(index + parent.fstartfonts) + ' 0 obj');
  writeln(stream, '<<');
  writeln(stream, '/type /font');
  writeln(stream, '/name /f' + inttostr(index - 1));
  writeln(stream, '/basefont /' + encodefontname(fontname));

  // add by ijia 2004.12.20
  //if charset <> chinesebig5_charset then
  if not (charset in [chinesebig5_charset, gb2312_charset]) then
    writeln(stream, '/subtype /truetype')
  else
    writeln(stream, '/subtype /type0');

  case charset of
    symbol_charset, ansi_charset:
      writeln(stream, '/encoding /winansiencoding');

    russian_charset: {1251}
    begin
      writeln(stream, '/encoding <</type/encoding /baseencoding /winansiencoding');
      write(stream, '/differences [129 /afii10052');
      write(stream, '/quotesinglbase/afii10100/quotedblbase/ellipsis/dagger/daggerdbl/euro/perthousand/afii10058/guilsinglleft/afii10059/afii10061/afii10060/afii10145/afii10099/quoteleft');
      write(stream, '/quoteright/quotedblleft/quotedblright/bullet/endash/emdash/space/trademark/afii10106/guilsinglright/afii10107/afii10109/afii10108/afii10193/space/afii10062');
      write(stream, '/afii10110/afii10057/currency/afii10050/brokenbar/section/afii10023/copyright/afii10053/guillemotleft/logicalnot/hyphen/registered/afii10056/degree/plusminus');
      write(stream, '/afii10055/afii10103/afii10098/mu/paragraph/periodcentered/afii10071/afii61352/afii10101/guillemotright/afii10105/afii10054/afii10102/afii10104/afii10017/afii10018');
      write(stream, '/afii10019/afii10020/afii10021/afii10022/afii10024/afii10025/afii10026/afii10027/afii10028/afii10029/afii10030/afii10031/afii10032/afii10033/afii10034/afii10035');
      write(stream, '/afii10036/afii10037/afii10038/afii10039/afii10040/afii10041/afii10042/afii10043/afii10044/afii10045/afii10046/afii10047/afii10048/afii10049/afii10065/afii10066');
      write(stream, '/afii10067/afii10068/afii10069/afii10070/afii10072/afii10073/afii10074/afii10075/afii10076/afii10077/afii10078/afii10079/afii10080/afii10081/afii10082/afii10083');
      writeln(stream, '/afii10084/afii10085/afii10086/afii10087/afii10088/afii10089/afii10090/afii10091/afii10092/afii10093/afii10094/afii10095/afii10096/afii10097/space]');
      writeln(stream, '>>');
    end;

    easteurope_charset: {1250}
    begin
      writeln(stream, '/encoding <</type/encoding /baseencoding /winansiencoding');
      write(stream, '/differences [128 /euro 140 /sacute /tcaron /zcaron /zacute');
      write(stream, ' 156 /sacute /tcaron /zcaron /zacute 161 /caron /breve /lslash');
      write(stream, ' 165 /aogonek 170 /scedilla 175 /zdotaccent 178 /ogonek /lslash');
      write(stream, ' 185 /aogonek /scedilla 188 /lcaron /hungarumlaut /lcaron /zdotaccent /racute');
      write(stream, ' 195 /abreve 197 /lacute /cacute 200 /ccaron 202 /eogonek 204 /ecaron 207 /dcaron /dslash');
      write(stream, ' 209 /nacute /ncaron /oacute 213 /ohungarumlaut 216 /rcaron /uring 219 /uhungarumlaut');
      write(stream, ' 222 /tcedilla 224 /racute 227 /abreve 229 /lacute /cacute /ccedilla /ccaron');
      write(stream, ' 234 /eogonek 236 /ecaron 239 /dcaron /dmacron /nacute /ncaron 245 /ohungarumlaut');
      write(stream, ' 248 /rcaron /uring 251 /uhungarumlaut 254 /tcedilla /dotaccent]');
      writeln(stream, '>>');
    end;

    turkish_charset,
    greek_charset,
    hebrew_charset,
    arabic_charset,
    vietnamese_charset:
    begin
      writeln(stream, '/encoding <</type/encoding /baseencoding /winansiencoding');
      write(stream, '/differences [128 /euro 142 /zcaron 158 /zcaron]');
      writeln(stream, '>>');
    end;

    chinesebig5_charset: {136}
    begin
      writeln(stream, '/descendantfonts [' + inttostr(index + 1 + parent.fstartfonts) + ' 0 r]');
      writeln(stream, '/encoding /etenms-b5-h');
      writeln(stream, '>>');
      writeln(stream, 'endobj');

      writeln(stream, inttostr(index + 1 + parent.fstartfonts) + ' 0 obj');
      writeln(stream, '<<');
      writeln(stream, '/type /font');
      writeln(stream, '/subtype');
      writeln(stream, '/cidfonttype2');
      writeln(stream, '/basefont /'+ encodefontname(fontname));
      writeln(stream, '/wincharset 136');
      writeln(stream, '/fontdescriptor ' + inttostr(index + 2 + parent.fstartfonts) + ' 0 r');
      writeln(stream, '/cidsysteminfo');
      writeln(stream, '<<');
      writeln(stream, '/registry(adobe)');
      writeln(stream, '/ordering(cns1)');
      writeln(stream, '/supplement 0');
      writeln(stream, '>>');
      writeln(stream, '/dw 1000');
      writeln(stream, '/w [1 95 500]');
      writeln(stream, '>>');
      writeln(stream, 'endobj');

      parent.xrefadd(stream);

      writeln(stream, inttostr(index + 2 + parent.fstartfonts) + ' 0 obj');
      writeln(stream, '<<');
      writeln(stream, '/type /fontdescriptor');
      if parent.fembedded then
         writeln(stream, '/fontfile2 ' + inttostr(index + 4 + parent.fstartfonts) + ' 0 r');
      writeln(stream, '/fontname /' + encodefontname(fontname));
      writeln(stream, '/flags 7');
      writeln(stream, '/fontbbox [' + inttostr(pm^.otmrcfontbox.left) + ' '+ inttostr(pm^.otmrcfontbox.bottom) + ' '+ inttostr(pm^.otmrcfontbox.right) + ' '+ inttostr(pm^.otmrcfontbox.top) + ' ]');
      writeln(stream, '/style << /panose <010502020300000000000000> >>');
      writeln(stream, '/ascent ' + inttostr(pm^.otmascent));
      writeln(stream, '/descent ' + inttostr(pm^.otmdescent));
      writeln(stream, '/capheight ' + inttostr(pm^.otmtextmetrics.tmheight));
      writeln(stream, '/stemv ' + inttostr(50 + round(sqr(pm^.otmtextmetrics.tmweight / 65))));
      writeln(stream, '/italicangle ' + inttostr(pm^.otmitalicangle));
      writeln(stream, '>>');
      writeln(stream, 'endobj');
    end;
   
    // add begin by ijia 2004.12.20
    gb2312_charset: {134}
    begin
      writeln(stream, '/descendantfonts [' + inttostr(index + 1 + parent.fstartfonts) + ' 0 r]');
      writeln(stream, '/encoding /gb-euc-h');
      writeln(stream, '>>');
      writeln(stream, 'endobj');

      writeln(stream, inttostr(index + 1 + parent.fstartfonts) + ' 0 obj');
      writeln(stream, '<<');
      writeln(stream, '/type /font');
      writeln(stream, '/subtype');
      writeln(stream, '/cidfonttype2');
      writeln(stream, '/basefont /'+ encodefontname(fontname));
      writeln(stream, '/wincharset 134');
      writeln(stream, '/fontdescriptor ' + inttostr(index + 2 + parent.fstartfonts) + ' 0 r');
      writeln(stream, '/cidsysteminfo');
      writeln(stream, '<<');
      writeln(stream, '/registry(adobe)');
      writeln(stream, '/ordering(gb1)');
      writeln(stream, '/supplement 2');
      writeln(stream, '>>');
      writeln(stream, '/dw 1000');
      writeln(stream, '/w [ 1 95 500 814 939 500 7712 [ 500 ] 7716 [ 500 ] ]');
      writeln(stream, '>>');
      writeln(stream, 'endobj');

      parent.xrefadd(stream);

      writeln(stream, inttostr(index + 2 + parent.fstartfonts) + ' 0 obj');
      writeln(stream, '<<');
      writeln(stream, '/type /fontdescriptor');
      if parent.fembedded then
         writeln(stream, '/fontfile2 ' + inttostr(index + 4 + parent.fstartfonts) + ' 0 r');
      writeln(stream, '/fontname /' + encodefontname(fontname));
      writeln(stream, '/flags 6');
     
      writeln(stream, '/fontbbox [-25 -254 1000 880]');
      writeln(stream, '/style << /panose <010502020400000000000000> >>');
      writeln(stream, '/ascent 880');
      writeln(stream, '/descent -120');
      writeln(stream, '/capheight 880');
      writeln(stream, '/stemv 93');
      writeln(stream, '/italicangle 0');
      writeln(stream, '>>');
      writeln(stream, 'endobj');
    end;
    // add end
  end;

  // add by ijia 2004.12.20
  //if charset <> chinesebig5_charset then
  if not (charset in [chinesebig5_charset, gb2312_charset]) then
  begin
    writeln(stream, '/fontdescriptor ' + inttostr(index + 2 + parent.fstartfonts) + ' 0 r');
    writeln(stream, '/firstchar ' + inttostr(firstchar));
    writeln(stream, '/lastchar ' + inttostr(lastchar));
    getmem(pwidths, sizeof(abcarray));
    write(stream, '/widths [');
    getcharabcwidths(b.canvas.handle, firstchar, lastchar, pwidths^);
    for i := 0 to (lastchar - firstchar) do
      write(stream, inttostr(pwidths^[i].abca + integer(pwidths^[i].abcb) + pwidths^[i].abcc) + ' ');
    writeln(stream, ']');
    freemem(pwidths);
    writeln(stream, '>>');
    writeln(stream, 'endobj');
    parent.xrefadd(stream);
    writeln(stream, inttostr(index + 2 + parent.fstartfonts) + ' 0 obj');
    writeln(stream, '<<');
    writeln(stream, '/type /fontdescriptor');
    if parent.fembedded then
      writeln(stream, '/fontfile2 ' + inttostr(index + 4 + parent.fstartfonts) + ' 0 r');
    writeln(stream, '/fontbbox [' + inttostr(pm^.otmrcfontbox.left) + ' '+ inttostr(pm^.otmrcfontbox.bottom) + ' '+ inttostr(pm^.otmrcfontbox.right) + ' '+ inttostr(pm^.otmrcfontbox.top) + ' ]');
    writeln(stream, '/fontname /' + fontname);
    writeln(stream, '/flags 32');
    writeln(stream, '/stemv ' + inttostr(50 + round(sqr(pm^.otmtextmetrics.tmweight / 65))));
    writeln(stream, '/capheight ' + inttostr(pm^.otmtextmetrics.tmheight));
    writeln(stream, '/ascent ' + inttostr(pm^.otmascent));
    writeln(stream, '/descent ' + inttostr(pm^.otmdescent));
    writeln(stream, '/italicangle ' + inttostr(pm^.otmitalicangle));
    writeln(stream, '>>');
    writeln(stream, 'endobj');
  end;

  if parent.fembedded then
  begin
    parent.xrefadd(stream);
    writeln(stream, inttostr(index + 4 + parent.fstartfonts) + ' 0 obj');
    i := getfontdata(b.canvas.handle, 0, 0, nil, 1);
    getmem(pfont, i);
    i := getfontdata(b.canvas.handle, 0, 0, pfont, i);
    memstream := tmemorystream.create;
    memstream.write(pfont^, i);

    memstream1 := tmemorystream.create;
    frxdeflatestream(memstream, memstream1, gzmax);
    writeln(stream, '<< /length ' + inttostr(memstream1.size) + ' /filter /flatedecode /length1 ' + inttostr(memstream.size) + ' >>');
    writeln(stream, 'stream');
    stream.copyfrom(memstream1, 0);
    memstream1.free;

    memstream.free;
    freemem(pfont);
    writeln(stream, '');
    writeln(stream, 'endstream');
    writeln(stream, 'endobj');
  end;
  freemem(pm);
  b.free;
end;

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