fr_cross1.pas

FASTREPORT报表工具,可以迅速制作报表.

    f: TfrTField;
    v: Variant;
    d: Double;
  begin
    Result := '';
    for i := 0 to sl.Count - 1 do
    begin
      s := PureName(sl[i]);
      f := TfrTField(FDataSet.FindField(CurReport.Dictionary.RealFieldName[s]));
      v := f.Value;
      if (TVarData(v).VType = varOleStr) or (TVarData(v).VType = varString) then
        Result := Result + f.AsString + ';'
      else
      begin
        if v = Null then
          d := 0
        else
        begin
          d := v;
          if sl = FRowFields then
            FRowTypes[i] := v
          else if sl = FColFields then
            FColTypes[i] := v;
        end;
        s := Format('%2.6f', [d]);
        n := 32 - Length(s);
        for j := 1 to n do
          s := ' ' + s;

        Result := Result + s + ';';
      end;
    end;
    if Result <> '' then
      Result := Copy(Result, 1, Length(Result) - 1);
  end;

  procedure FormGroup(NewGroup, OldGroup: String; Direction: Boolean);
  var
    i, j: Integer;
    sl1, sl2: TStringList;

    procedure FormGroup1(Index: Integer);
    var
      i: Integer;
      s: String;
    begin
      s := '';
      for i := 0 to Index - 1 do
        s := s + sl1[i] + ';';
      s := s + sl1[Index] + '+;+';
      if Direction then
      begin
        if HasTotal(FColFields[Index]) then
          Cell[Rows[0], s, 0] := 0
      end
      else
        if HasTotal(FRowFields[Index]) then
          Cell[s, Columns[0], 0] := 0;
    end;

  begin
    sl1 := TStringList.Create;
    sl2 := TStringList.Create;
    frSetCommaText(OldGroup, sl1);
    frSetCommaText(NewGroup, sl2);
    for i := 0 to sl1.Count - 1 do
      if (NewGroup = '') or (sl1[i] <> sl2[i]) then
      begin
        for j := sl1.Count - 1 downto i do
          FormGroup1(j);
        break;
      end;
    sl1.Free;
    sl2.Free;
  end;

  procedure MakeTotals(sl: TStringList; Direction: Boolean);
  var
    i: Integer;
    s, Old: String;
  begin
    Old := sl[0];
    i := 0;
    while i < sl.Count do
    begin
      s := sl[i];
      if (s <> Old) and (Pos('+', s) = 0) then
      begin
        FormGroup(s, Old, Direction);
        Old := s;
      end;
      Inc(i);
    end;
    FormGroup('', sl[sl.Count - 1], Direction);
  end;

  procedure CalcTotals(FieldsSl, RowsSl, ColumnsSl: TStringList);
  var
    i, j, k, i1: Integer;
    l: TList;
    cg: TfrCrossGroupItem;
  begin
    l := TList.Create;
    l.Add(TfrCrossGroupItem.Create(Self, '', FieldsSl.Count, FCellItemsCount)); // grand total
    for i := 0 to FieldsSl.Count - 1 do
      l.Add(TfrCrossGroupItem.Create(Self, ColumnsSl[0], i, FCellItemsCount));

    for i := 0 to RowsSl.Count - 1 do
    begin
      for k := 0 to FieldsSl.Count do
        TfrCrossGroupItem(l[k]).Reset(ColumnsSl[0], 0);
      for j := 0 to ColumnsSl.Count - 1 do
      begin
        for k := 0 to FieldsSl.Count do
        begin
          cg := TfrCrossGroupItem(l[k]);
          if cg.IsBreak(ColumnsSl[j]) or
            ((k = 0) and (j = ColumnsSl.Count - 1)) then
          begin
            if (k = 0) or HasTotal(FieldsSl[k - 1]) then
            begin
              cg.CheckAvg;
              if RowsSl = Rows then
              begin
                CellArray[i, j] := cg.Value;
                Cell[Rows[0], Columns[j], -1] := cg.FStartFrom;
              end
              else
              begin
                CellArray[j, i] := cg.Value;
                Cell[Rows[j], Columns[0], -1] := cg.FStartFrom;
              end;
            end;

            i1 := j;
            while i1 < ColumnsSl.Count do
            begin
              if Pos('+;+', ColumnsSl[i1]) = 0 then
                break;
              Inc(i1);
            end;
            if i1 < ColumnsSl.Count then
              cg.Reset(ColumnsSl[i1], j);
            break;
          end
          else if Pos('+;+', ColumnsSl[j]) = 0 then
            if RowsSl = Rows then
              cg.AddValue(CellArray[i, j]) else
              cg.AddValue(CellArray[j, i]);
        end;
      end;
    end;

    for i := 0 to FieldsSl.Count do
      TfrCrossGroupItem(l[i]).Free;
    l.Free;
  end;

  procedure CheckAvg;
  var
    i, j: Integer;
    v, n: Variant;
    Check: Boolean;

    procedure CalcAvg(i1, j1: Integer);
    var
      i, j, k: Integer;
      v1: Variant;
    begin
      for i := 0 to FCellFields.Count - 1 do
      begin
        v[i] := 0;
        n[i] := 0;
      end;

      for i := CellByIndex[i1, 0, -1] to i1 - 1 do
        for j := CellByIndex[0, j1, -1] to j1 - 1 do
          if (not IsTotalRow[i]) and (not IsTotalColumn[j]) then
            for k := 0 to FCellFields.Count - 1 do
              if FuncName(FCellFields[k]) = 'avg' then
              begin
                v1 := CellByIndex[i, j, k];
                if v1 <> Null then
                begin
                  n[k] := n[k] + 1;
                  v[k] := v[k] + v1;
                end;
              end;
      for i := 0 to FCellFields.Count - 1 do
        if FuncName(FCellFields[i]) = 'avg' then
          if n[i] <> 0 then
            Cell[Rows[i1], Columns[j1], i] := v[i] / n[i] else
            Cell[Rows[i1], Columns[j1], i] := Null;
    end;

  begin
    v := VarArrayCreate([0, FCellFields.Count - 1], varVariant);
    n := VarArrayCreate([0, FCellFields.Count - 1], varInteger);

    Check := False;
    for i := 0 to FCellFields.Count - 1 do
      if FuncName(FCellFields[i]) = 'avg' then
      begin
        Check := True;
        break;
      end;

    if Check then
      for i := 0 to Rows.Count - 1 do
        if IsTotalRow[i] or (i = Rows.Count - 1) then
          for j := 0 to Columns.Count - 1 do
            if IsTotalColumn[j] or (j = Columns.Count - 1) then
              CalcAvg(i, j);

    for i := 0 to Rows.Count - 1 do
      Cell[Rows[i], Columns[0], -1] := Null;
    for i := 0 to Columns.Count - 1 do
      Cell[Rows[0], Columns[i], -1] := Null;

    VarClear(v);
    VarClear(n);
  end;

  procedure MakeColumnHeader;
  var
    i, j, n, cn: Integer;
    s: String;
    sl, sl1: TStringList;
    Flag: Boolean;
    d: Double;
    v: Variant;

    function CompareSl(Index: Integer): Boolean;
    begin
      Result := (sl.Count > Index) and (sl1.Count > Index) and (sl[Index] = sl1[Index]);
    end;

  begin
    sl := TStringList.Create;
    sl1 := TStringList.Create;
    cn := CharCount(';', Columns[0]) + 1; // height of header
    FTopLeftSize.cy := cn;

    for i := 0 to cn do
      Cell[Chr(i), Columns[0], 0] := '';

    for i := 0 to Columns.Count - 1 do
      Cell[#0, Columns[i], -1] := frftTop + frftBottom;

    Cell[#0, Columns[0], 0] := FHeaderString;
    Cell[#0, Columns[0], -1] := frftLeft + frftTop + frftBottom;
    Cell[#0, Columns[Columns.Count - 1], -1] := frftTop + frftRight;

    for i := 1 to cn do
      Cell[Chr(i), Columns[Columns.Count - 1], -1] := frftLeft + frftRight;

    Cell[#1, Columns[Columns.Count - 1], 0] := FColumnGrandTotalString;
    Cell[#1, Columns[Columns.Count - 1], -1] := frftLeft + frftTop + frftRight;

    for i := 0 to Columns.Count - 2 do
    begin
      s := Columns[i];
      frSetCommaText(s, sl);
      if Pos('+;+', s) <> 0 then
      begin
        n := CharCount(';', s);

        for j := 1 to n - 1 do
          Cell[Chr(j), s, -1] := frftTop;

        for j := n to cn do
          if j = n then
          begin
            Cell[Chr(j), s, 0] := FColumnTotalString;
            Cell[Chr(j), s, -1] := frftRight + frftLeft + frftTop;
          end
          else
            Cell[Chr(j), s, -1] := frftRight + frftLeft;
      end
      else
      begin
        Flag := False;
        for j := 0 to cn - 1 do
          if (not Flag) and CompareSl(j) then
            Cell[Chr(j + 1), s, -1] := frftTop
          else
          begin
            if TVarData(FColTypes[j]).VType = varDate then
            begin
              d := StrToFloat(Trim(sl[j]));
              TVarData(FColTypes[j]).VDate := d;
              v := FColTypes[j];
            end
            else if (TVarData(FColTypes[j]).VType = varString) or
                    (TVarData(FColTypes[j]).VType = varOleStr) or
                    (TVarData(FColTypes[j]).VType = varEmpty) or
                    (TVarData(FColTypes[j]).VType = varNull) then
              v := Trim(sl[j])
            else
            begin
              d := StrToFloat(Trim(sl[j]));
              v := FloatToStr(d);
            end;
            Cell[Chr(j + 1), s, 0] := v;
            Cell[Chr(j + 1), s, -1] := frftTop + frftLeft;
            Flag := True;
          end;
      end;
      sl1.Assign(sl);
    end;

    sl.Free;
    sl1.Free;
  end;

  procedure MakeRowHeader;
  var
    i, j, n, cn: Integer;
    s: String;
    sl, sl1: TStringList;
    Flag: Boolean;
    d: Double;
    v: Variant;

    function CompareSl(Index: Integer): Boolean;
    begin
      Result := (sl.Count > Index) and (sl1.Count > Index) and (sl[Index] = sl1[Index]);
    end;

    procedure CellOr(Index1, Index2: String; Value: Integer);
    var
      v: Variant;
    begin
      v := Cell[Index1, Index2, -1];
      if v = Null then
        v := 0;
      v := v or Value;
      Cell[Index1, Index2, -1] := v;
    end;

  begin
    sl := TStringList.Create;
    sl1 := TStringList.Create;
    cn := CharCount(';', Rows[FTopLeftSize.cy + 1]) + 1; // width of header
    FTopLeftSize.cx := cn;

    for i := 0 to cn - 1 do
      Cell[Rows[0], Chr(i), 0] := '';

    Cell[Rows[Rows.Count - 1], #0, 0] := FRowGrandTotalString;
    Cell[Rows[Rows.Count - 1], #0, -1] := frftTop + frftBottom + frftLeft;

    for i := 1 to cn - 1 do
      Cell[Rows[Rows.Count - 1], Chr(i), -1] := frftTop + frftBottom;

    for i := 0 to FTopLeftSize.cy do
      for j := 0 to cn - 1 do
        Cell[Chr(i), Chr(j), -1] := 0;

    for i := FTopLeftSize.cy + 1 to Rows.Count - 2 do
    begin
      s := Rows[i];
      frSetCommaText(s, sl);
      if Pos('+;+', s) <> 0 then
      begin
        n := CharCount(';', s);

        for j := 1 to n - 1 do
          Cell[s, Chr(j - 1), -1] := frftLeft;

        for j := n to cn do
          if j = n then
          begin
            Cell[s, Chr(j - 1), 0] := FRowTotalString;
            Cell[s, Chr(j - 1), -1] := frftLeft + frftTop;
          end
          else
            Cell[s, Chr(j - 1), -1] := frftTop + frftBottom;
      end
      else
      begin
        Flag := False;
        for j := 0 to cn - 1 do
          if (not Flag) and CompareSl(j) then
            Cell[s, Chr(j), -1] := frftLeft
          else
          begin
            if TVarData(FRowTypes[j]).VType = varDate then
            begin
              d := StrToFloat(Trim(sl[j]));
              TVarData(FRowTypes[j]).VDate := d;
              v := FRowTypes[j];
            end
            else if (TVarData(FRowTypes[j]).VType = varString) or
                    (TVarData(FRowTypes[j]).VType = varOleStr) or
                    (TVarData(FRowTypes[j]).VType = varEmpty) or
                    (TVarData(FRowTypes[j]).VType = varNull) then
              v := Trim(sl[j])
            else
            begin
              d := StrToFloat(Trim(sl[j]));
              v := FloatToStr(d);
            end;
            Cell[s, Chr(j), 0] := v;
            Cell[s, Chr(j), -1] := frftTop + frftLeft;
            Flag := True;
          end;
      end;
      sl1.Assign(sl);
    end;

    sl.Free;
    sl1.Free;

    for i := cn to Columns.Count - 1 do
      CellOr(Rows[Rows.Count - 1], Columns[i], 15);
    for i := cn to Columns.Count - 1 do
      CellOr(Rows[FTopLeftSize.cy], Columns[i], frftBottom);
    for i := 0 to cn - 1 do
      CellOr(Rows[Rows.Count - 2], Columns[i], frftBottom);
  end;

begin
  FDataSet.Open;
  FDataSet.First;
  while not FDataSet.EOF do
  begin
    for i := 0 to FCellFields.Count - 1 do
    begin
      f := TfrTField(FDataSet.FindField(CurReport.Dictionary.RealFieldName[PureName(FCellFields[i])]));
      if FuncName(FCellFields[i]) = 'count' then
      begin
        v := 0;
        if f.Value <> Null then
          v := 1;
      end
      else
        v := f.Value;
      s1 := GetFieldValues(FRowFields);
      s2 := GetFieldValues(FColFields);
      if Cell[s1, s2, i] = Null then
        Cell[s1, s2, i] := v else
        Cell[s1, s2, i] := Cell[s1, s2, i] + v;
    end;
    FDataSet.Next;
  end;

  if Columns.Count = 0 then Exit;
  MakeTotals(Columns, True);
  Cell[Rows[0], Columns[Columns.Count - 1] + '+', 0] := 0;
  MakeTotals(Rows, False);
  Cell[Rows[Rows.Count - 1] + '+', Columns[0], 0] := 0;

  CalcTotals(FColFields, Rows, Columns);
  CalcTotals(FRowFields, Columns, Rows);
  CheckAvg;

  MakeColumnHeader;
  MakeRowHeader;
end;

function TfrCross.GetIsTotalRow(Index: Integer): Boolean;
begin
  Result := Pos('+;+', Rows[Index]) <> 0;
end;

function TfrCross.GetIsTotalColumn(Index: Integer): Boolean;
begin
  Result := Pos('+;+', Columns[Index]) <> 0;
end;


end.