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Fastreport3.14的中文PDF输出

2019-11-18 17:58:29
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参考 《让Fastreport3.x支持中文PDF的输出》一文，确实可以支持中文。但是发现两个问题：

1、只能在Adobe Reader下打开，在Foxit Reader下空白。

2、用Adobe Acrobat或者Adobe Reader打开时提示rebuild，关闭时提示save

研究了一下Fastreport3.14和3.07的源代码，发现关于字体这部分重新调整了。在3.07下，每个type0的字体有三个obj表示，而在3.14下只用两个obj(把FontDescriptor放进实际字体中去了)。3.14中源代码中有个小bug，漏掉了实际字体obj的ref（原frxPDFfile.pas的985行和986行之间）。Foxit Reader应该是严格按照ref去找obj的，找不到obj，所以显示不出来。Adobe Reader应该不是按ref找的，能够正常显示汉字，但是它会重新ref，所以提示rebuild。

修改后的TfrxPDFFont.SaveToStream替换原来的即可。

镶入字体还不行。有时间再说。3.15的说明中有说增强了PDF导出的功能，期待中。

PRocedure TfrxPDFFont.SaveToStream(Stream: TStream);
var
  s: string;
  b: TBitmap;
  pm: ^OUTLINETEXTMETRIC;
  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.PixelsPerInch := 96;
  b.Canvas.Font.Size := 750;
  i := GetOutlineTextMetrics(b.Canvas.Handle, 0, nil);
  GetMem(pm, i);
  try
    try
      GetOutlineTextMetrics(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;
      FontName := EncodeFontName(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 /' + 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;

        GREEK_CHARSET: {1253}
          begin
            WriteLn(Stream, '/Encoding <</Type/Encoding /BaseEncoding /WinAnsiEncoding');
            Write(Stream, '/Differences [ 128 /Euro 160 /quoteleft/quoteright 175 /afii00208');
            Write(Stream, ' 180 /tonos/dieresistonos/Alphatonos');
            Write(Stream, ' 184 /Epsilontonos/Etatonos/Iotatonos');
            Write(Stream, ' 188 /Omicrontonos 190 /Upsilontonos');
            Write(Stream, '/Omegatonos/iotadieresistonos/Alpha/Beta/Gamma/Delta/Epsilon/Zeta');
            Write(Stream, '/Eta/Theta/Iota/Kappa/Lambda/Mu/Nu/Xi/Omicron/Pi/Rho');
            Write(Stream, ' 211 /Sigma/Tau/Upsilon/Phi');
            Write(Stream, '/Chi/Psi/Omega/Iotadieresis/Upsilondieresis/alphatonos/epsilontonos');
            Write(Stream, '/etatonos/iotatonos/upsilondieresistonos/alpha/beta/gamma/delta/epsilon');
            Write(Stream, '/zeta/eta/theta/iota/kappa/lambda/mu/nu/xi/omicron/pi/rho/sigma1/sigma');
            Write(Stream, '/tau/upsilon/phi/chi/psi/omega/iotadieresis/upsilondieresis/omicrontonos');
            Write(Stream, '/upsilontonos/omegatonos ]');
            WriteLn(Stream, '>>');
          end;

        TURKISH_CHARSET: {1254}
          begin
            WriteLn(Stream, '/Encoding <</Type/Encoding /BaseEncoding /WinAnsiEncoding');
            Write(Stream, '/Differences [ 128 /Euro');
            Write(Stream, ' 130 /quotesinglbase/florin/quotedblbase/ellipsis/dagger');
            Write(Stream, ' /daggerdbl/circumflex/perthousand/Scaron/guilsinglleft/OE');
            Write(Stream, ' 145 /quoteleft/quoteright/quotedblleft/quotedblright');
            Write(Stream, ' /bullet/endash/emdash/tilde/trademark/scaron/guilsinglright/oe');
            Write(Stream, ' 159 /Ydieresis 208 /Gbreve 221 /Idotaccent/Scedilla');
            Write(Stream, ' 240 /gbreve 253 /dotlessi/scedilla]');
            WriteLn(Stream, '>>');
          end;

        HEBREW_CHARSET: {1255}
          begin
            WriteLn(Stream, '/Encoding <</Type/Encoding /BaseEncoding /WinAnsiEncoding');
            Write(Stream, '/Differences [ 128 /Euro 130 /quotesinglbase/florin/quotedblbase/ellipsis');
            Write(Stream, ' /dagger/daggerdbl/circumflex/perthousand 139 /guilsinglleft');
            Write(Stream, ' 145 /quoteleft/quoteright/quotedblleft/quotedblright');
            Write(Stream, ' /bullet/endash/emdash/tilde/trademark 155 /perthousand');
            Write(Stream, ' 164 /afii57636 170 /multiply 186 /divide');
            Write(Stream, ' 192 /afii57799/afii57801/afii57800/afii57802/afii57793');
            Write(Stream, ' /afii57794/afii57795/afii57798/afii57797/afii57806');
            Write(Stream, ' 203 /afii57796/afii57807/afii57839/afii57645/afii57841/afii57842');
            Write(Stream, ' /afii57804/afii57803/afii57658/afii57716/afii57717/afii57718');
            Write(Stream, ' 224 /afii57664/afii57665/afii57666/afii57667/afii57668/afii57669');
            Write(Stream, ' /afii57670/afii57671/afii57672/afii57673/afii57674/afii57675');
            Write(Stream, ' /afii57676/afii57677/afii57678/afii57679/afii57680/afii57681');
            Write(Stream, ' /afii57682/afii57683/afii57684/afii57685/afii57686/afii57687');
            Write(Stream, ' /afii57688/afii57689/afii57690 253 /afii299/afii300]');
            WriteLn(Stream, '>>');
          end;

        ARABIC_CHARSET:
          begin
            WriteLn(Stream, '/Encoding <</Type/Encoding /BaseEncoding /WinAnsiEncoding');
            Write(Stream, '/Differences [ 128 /Euro/afii57506/quotesinglbase/florin/quotedblbase');
            Write(Stream, '/ellipsis/dagger/daggerdbl/circumflex/perthousand/afii57511');
            Write(Stream, '/guilsinglleft/OE/afii57507/afii57508');
            Write(Stream, ' 144 /afii57509/quoteleft/quoteright/quotedblleft');
            Write(Stream, '/quotedblright/bullet/endash/emdash');
            Write(Stream, ' 153 /trademark/afii57513/guilsinglright/oe/afii61664');
            Write(Stream, '/afii301/afii57514 161 /afii57388');
            Write(Stream, ' 186 /afii57403 191 /afii57407');
            Write(Stream, ' 193 /afii57409/afii57410/afii57411/afii57412/afii57413');
            Write(Stream, '/afii57414/afii57415/afii57416/afii57417/afii57418/afii57419');
            Write(Stream, '/afii57420/afii57421/afii57422/afii57423/afii57424/afii57425');
            Write(Stream, '/afii57426/afii57427/afii57428/afii57429/afii57430');
            Write(Stream, ' 216 /afii57431/afii57432/afii57433/afii57434/afii57440');
            Write(Stream, '/afii57441/afii57442/afii57443/afii57444');
            Write(Stream, ' 227 /afii57445/afii57446/afii57470/afii57448/afii57449');
            Write(Stream, '/afii57450 240 /afii57451/afii57452/afii57453/afii57454');
            Write(Stream, '/afii57455/afii57456 248 /afii57457 250 /afii57458');
            Write(Stream, ' 253 /afii299/afii300/afii57519]');
            WriteLn(Stream, '>>');
          end;

        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');
            // Add by MagicDog
            Parent.XRefAdd(Stream);

            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');
            Write(Stream, '/FontDescriptor ');
            WriteLn(Stream, '<<');
            WriteLn(Stream, '/Type /FontDescriptor');
            if Parent.FEmbedded then
              WriteLn(Stream, '/FontFile2 ' + IntToStr(Index + 2 + 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, '/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');
          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');

            // Add by MagicDog
            Parent.XRefAdd(Stream);
            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');

            Write(Stream, '/FontDescriptor ');
            WriteLn(Stream, '<<');
            WriteLn(Stream, '/Type /FontDescriptor');
            if Parent.FEmbedded then
              WriteLn(Stream, '/FontFile2 ' + IntToStr(Index + 2 + Parent.FStartFonts) + ' 0 R');
            WriteLn(Stream, '/FontName /' + EncodeFontName(FontName));
            WriteLn(Stream, '/Flags 6');
            WriteLn(Stream, '/FontBBox [' + IntToStr(pm^.otmrcFontBox.Left) + ' ' + IntToStr(pm^.otmrcFontBox.Bottom) + ' ' + IntToStr(pm^.otmrcFontBox.Right) + ' ' + IntToStr(pm^.otmrcFontBox.Top) + ' ]');
            WriteLn(Stream, '/Style << /Panose <010502020400000000000000> >>');
            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, '/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');
          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 + 1 + 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 + 1 + Parent.FStartFonts) + ' 0 obj');
        WriteLn(Stream, '<<');
        WriteLn(Stream, '/Type /FontDescriptor');
        WriteLn(Stream, '/FontName /' + FontName);
        WriteLn(Stream, '/Flags 32');
        WriteLn(Stream, '/FontBBox [' + IntToStr(pm^.otmrcFontBox.Left) + ' ' + IntToStr(pm^.otmrcFontBox.Bottom) + ' ' + IntToStr(pm^.otmrcFontBox.Right) + ' ' + IntToStr(pm^.otmrcFontBox.Top) + ' ]');
        WriteLn(Stream, '/ItalicAngle ' + IntToStr(pm^.otmItalicAngle));
        WriteLn(Stream, '/Ascent ' + IntToStr(pm^.otmAscent));
        WriteLn(Stream, '/Descent ' + IntToStr(pm^.otmDescent));
        WriteLn(Stream, '/Leading ' + IntToStr(pm^.otmTextMetrics.tmInternalLeading)); //NEW
        WriteLn(Stream, '/CapHeight ' + IntToStr(pm^.otmTextMetrics.tmHeight));
        WriteLn(Stream, '/XHeight ' + IntToStr(pm^.otmsXHeight)); //NEW
        WriteLn(Stream, '/StemV ' + IntToStr(50 + Round(sqr(pm^.otmTextMetrics.tmWeight / 65))));
        WriteLn(Stream, '/AvgWidth ' + IntToStr(pm^.otmTextMetrics.tmAveCharWidth)); //NEW
        WriteLn(Stream, '/MaxWidth ' + IntToStr(pm^.otmTextMetrics.tmMaxCharWidth)); //NEW
        WriteLn(Stream, '/MissingWidth ' + IntToStr(pm^.otmTextMetrics.tmAveCharWidth)); //NEW
        if Parent.FEmbedded then
          WriteLn(Stream, '/FontFile2 ' + IntToStr(Index + 2 + Parent.FStartFonts) + ' 0 R');

        WriteLn(Stream, '>>');
        WriteLn(Stream, 'endobj');
      end;

      if Parent.FEmbedded then
      begin
        Parent.XRefAdd(Stream);
        WriteLn(Stream, IntToStr(Index + 2 + 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;
    except
    end;
  finally
    FreeMem(pm);
    b.Free;
  end;
end;



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