DBGrid变换成HTML表格

(*// 标题:数据网格处理成超文本表格
说明:支持对齐、字体、背景颜色;做打印又有一种新方法了！
设计:Zswang
日期:2002-05-19
支持:wjhu111@21cn.com
//*)
///////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, '<', '<', [rfReplaceAll]);
Result := StringReplace(Result, '>', '>', [rfReplaceAll]);
if Result ='' then Result:='-';
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.Visible then begin
Inc(J);
SetLength(vWidths, J);
vWidths[J - 1] := mDBGrid.Columns.Width;
Inc(vAllWidth, mDBGrid.Columns.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.Visible then begin
vColFormat := vColFormat + Format(
' <TD BGCOLOR="%s" ALIGN=%s WIDTH="%d%%">DisplayText%d</TD>'#13#10,
[ColorToHtml(mDBGrid.Columns.Color),
cAlignText[mDBGrid.Columns.Alignment],
Round(vWidths[J] / vAllWidth * 100), J]);
vColText := vColText + Format(
' <TD BGCOLOR="%s" ALIGN=%s WIDTH="%d%%">%s</TD>'#13#10,
[ColorToHtml(mDBGrid.Columns.Title.Color),
cAlignText[mDBGrid.Columns.Alignment],
Round(vWidths[J] / vAllWidth * 100),
StrToHtml(mDBGrid.Columns.Title.Caption,
mDBGrid.Columns.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.Visible then begin
vColText := StringReplace(vColText, Format('>DisplayText%d<', [J]),
Format('>%s<', [StrToHtml(mDBGrid.Columns.Field.DisplayText,
mDBGrid.Columns.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:.htm');
ShellExecute(Handle, nil, 'c:.htm', nil, nil, SW_SHOW);
end;
///////End Demo