DBGrid To Html Table

Problem/Question/Abstract:

Deal with Font, bgColor, Alignment.
(*//
function ColorToHtml(mColor: TColor): string;
function StrToHtml(mStr: string; mFont: TFont = nil): string;
//*)

Answer:

///////Begin Source

function ColorToHtml(mColor: TColor): string;
begin
  mColor := ColorToRGB(mColor);
  Result := Format('#%.2x%.2x%.2x',
    [GetRValue(mColor), GetGValue(mColor), GetBValue(mColor)]);
end; { ColorToHtml }

function StrToHtml(mStr: string; mFont: TFont = nil): string;
var
  vLeft, vRight: string;
begin
  Result := mStr;
  Result := StringReplace(Result, '&', '&', [rfReplaceAll]);
  Result := StringReplace(Result, '<', '&LT;', [rfReplaceAll]);
  Result := StringReplace(Result, '>', '&GT;', [rfReplaceAll]);
  if not Assigned(mFont) then
    Exit;
  vLeft := Format('<FONT FACE="%s" COLOR="%s">',
    [mFont.Name, ColorToHtml(mFont.Color)]);
  vRight := '</FONT>';
  if fsBold in mFont.Style then
  begin
    vLeft := vLeft + '<B>';
    vRight := '</B>' + vRight;
  end;
  if fsItalic in mFont.Style then
  begin
    vLeft := vLeft + '<I>';
    vRight := '</I>' + vRight;
  end;
  if fsUnderline in mFont.Style then
  begin
    vLeft := vLeft + '<U>';
    vRight := '</U>' + vRight;
  end;
  if fsStrikeOut in mFont.Style then
  begin
    vLeft := vLeft + '<S>';
    vRight := '</S>' + vRight;
  end;
  Result := vLeft + Result + vRight;
end; { StrToHtml }

function DBGridToHtmlTable(mDBGrid: TDBGrid; mStrings: TStrings;
  mCaption: TCaption = ''): Boolean;
const
  cAlignText: array[TAlignment] of string = ('LEFT', 'RIGHT', 'CENTER');
var
  vColFormat: string;
  vColText: string;
  vAllWidth: Integer;
  vWidths: array of Integer;
  vBookmark: string;
  I, J: Integer;
begin
  Result := False;
  if not Assigned(mStrings) then
    Exit;
  if not Assigned(mDBGrid) then
    Exit;
  if not Assigned(mDBGrid.DataSource) then
    Exit;
  if not Assigned(mDBGrid.DataSource.DataSet) then
    Exit;
  if not mDBGrid.DataSource.DataSet.Active then
    Exit;
  vBookmark := mDBGrid.DataSource.DataSet.Bookmark;
  mDBGrid.DataSource.DataSet.DisableControls;
  try
    J := 0;
    vAllWidth := 0;
    for I := 0 to mDBGrid.Columns.Count - 1 do
      if mDBGrid.Columns[I].Visible then
      begin
        Inc(J);
        SetLength(vWidths, J);
        vWidths[J - 1] := mDBGrid.Columns[I].Width;
        Inc(vAllWidth, mDBGrid.Columns[I].Width);
      end;
    if J <= 0 then
      Exit;
    mStrings.Clear;
    mStrings.Add(Format('<TABLE BGCOLOR="%s" BORDER=1 WIDTH="100%%">',
      [ColorToHtml(mDBGrid.Color)]));
    if mCaption <> '' then
      mStrings.Add(Format('<CAPTION>%s</CAPTION>', [StrToHtml(mCaption)]));
    vColFormat := '';
    vColText := '';
    vColFormat := vColFormat + '<TR>'#13#10;
    vColText := vColText + '<TR>'#13#10;
    J := 0;
    for I := 0 to mDBGrid.Columns.Count - 1 do
      if mDBGrid.Columns[I].Visible then
      begin
        vColFormat := vColFormat + Format(
          '  <TD BGCOLOR="%s" ALIGN=%s WIDTH="%d%%">DisplayText%d</TD>'#13#10,
          [ColorToHtml(mDBGrid.Columns[I].Color),
          cAlignText[mDBGrid.Columns[I].Alignment],
            Round(vWidths[J] / vAllWidth * 100), J]);
        vColText := vColText + Format(
          '  <TD BGCOLOR="%s" ALIGN=%s WIDTH="%d%%">%s</TD>'#13#10,
          [ColorToHtml(mDBGrid.Columns[I].Title.Color),
          cAlignText[mDBGrid.Columns[I].Alignment],
            Round(vWidths[J] / vAllWidth * 100),
            StrToHtml(mDBGrid.Columns[I].Title.Caption,
            mDBGrid.Columns[I].Title.Font)]);
        Inc(J);
      end;
    vColFormat := vColFormat + '</TR>'#13#10;
    vColText := vColText + '</TR>'#13#10;
    mStrings.Text := mStrings.Text + vColText;
    mDBGrid.DataSource.DataSet.First;
    while not mDBGrid.DataSource.DataSet.Eof do
    begin
      J := 0;
      vColText := vColFormat;
      for I := 0 to mDBGrid.Columns.Count - 1 do
        if mDBGrid.Columns[I].Visible then
        begin
          vColText := StringReplace(vColText, Format('>DisplayText%d<', [J]),
            Format('>%s<', [StrToHtml(mDBGrid.Columns[I].Field.DisplayText,
              mDBGrid.Columns[I].Font)]),
            [rfReplaceAll]);
          Inc(J);
        end;
      mStrings.Text := mStrings.Text + vColText;
      mDBGrid.DataSource.DataSet.Next;
    end;
    mStrings.Add('</TABLE>');
  finally
    mDBGrid.DataSource.DataSet.Bookmark := vBookmark;
    mDBGrid.DataSource.DataSet.EnableControls;
    vWidths := nil;
  end;
  Result := True;
end; { DBGridToHtmlTable }
///////End Source

{ uses ShellApi; }

///////Begin Demo

procedure TForm1.Button1Click(Sender: TObject);
begin
  DBGridToHtmlTable(DBGrid1, Memo1.Lines, Caption);
  Memo1.Lines.SaveToFile('c:\temp.htm');
  ShellExecute(Handle, nil, 'c:\temp.htm', nil, nil, SW_SHOW);
end;
///////End Demo