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Larsi 3. Feb 2009 10:10


Druck speichern
 
Hi,

ich habe eine Funktion im Internet gefunden, die den Inhalt von etwas ausdruckt. Klappt auch wunderbar aber jetzt kommt meine Frage: Wie kann man das was gedruckt werden soll abspeichern, also als Bild oder so? Geht das?

Es geht mir nicht darum es später nochmal zu drucken sondern als Exportier Funktion.


MFG Lars Wiltfang

worker 3. Feb 2009 10:12

Re: Druck speichern
 
Drucke in eine Datei.

Deine Infos sind zu mager...

Larsi 3. Feb 2009 10:14

Re: Druck speichern
 
Drucke in eine Datei? Hä :gruebel: ?

Es geht um diese Funktion:

Delphi-Quellcode:
procedure PrintListview(oListView: TListView; PrintDialog: TPrintDialog; lvTitel: string);
var
  pWidth, pHeight, i: Integer;
  v, h: Real;
  CurItem, iColumnCount: Integer;
  //aCols: array[0..50] of Integer; // Delphi 3
  aCols: array of Integer; // Delphi 5
  iTotColsWidth, iInnerWidth, TopMarg, LinesOnPage, CurLine, TekstHeight, CurCol: Integer;
  CurRect: TRect;
  CurStr: string;
  CurLeft, NumPages, TmpPos: Integer;

begin
  if PrintDialog.Execute then
  begin
    iColumnCount := oListview.Columns.Count;
    SetLength(aCols, iColumnCount + 1); // + 1 nodig ??? Delphi 5
    Printer.Title := 'Listview Print';
    Printer.Copies := 1;
    Printer.Orientation := poPortrait;
    Printer.BeginDoc;
    pHeight := Printer.PageHeight;
    pWidth := Printer.PageWidth;

    v := (pHeight + (2 * GetDeviceCaps(Printer.Handle, PHYSICALOFFSETY))) / (29.7 * 0.95);
    //0.95 is a strange correction factor on the clients printer
    h := (pWidth + (2 * GetDeviceCaps(Printer.Handle, PHYSICALOFFSETX))) / 21;

    // calculate total width
    iTotColsWidth := 0;
    for i := 0 to iColumnCount - 1 do
      iTotColsWidth := iTotColsWidth + oListView.Columns[i].Width;

    // calculate space between lMargin and rMargin
    aCols[0] := Round(1.5 * h); //left margin ?
    aCols[iColumnCount + 0] := pWidth - Round(1.5 * h); //rigth margin ?
    iInnerWidth := aCols[iColumnCount + 0] - aCols[0]; // space between margins ?

    //calculate start of each column
    for i := 0 to iColumnCount - 1 do
      aCols[i + 1] := aCols[i] + Round(oListView.Columns[i].Width / iTotColsWidth * iInnerWidth);
    TopMarg := Round(2.5 * v);
    with Printer.Canvas do
    begin
      Font.Size := 10;
      Font.Style := [];
      Font.Name := 'Times New Roman';
      Font.Color := RGB(0, 0, 0);
      TekstHeight := Printer.Canvas.TextHeight('dummy');
      LinesOnPage := Round((PHeight - (5 * v)) / TekstHeight);
      NumPages := 1;

      // gather number of pages to print
      while (NumPages * LinesOnPage) < oListView.Items.Count do
        inc(NumPages);
      // start
      CurLine := 0;
      for CurItem := 0 to oListView.Items.Count - 1 do
      begin
        if (CurLine > LinesOnPage) or (CurLine = 0) then
        begin
          if (CurLine > LinesOnPage) then Printer.NewPage;
          CurLine := 1;
          if Printer.PageNumber = NumPages then
          begin
            MoveTo(aCols[1], topMarg);
            for i := 1 to iColumnCount - 1 do
            begin
              LineTo(aCols[i], TopMarg + (TekstHeight * (oListView.Items.Count - CurItem + 2)));
              MoveTo(aCols[i + 1], topMarg);
            end;
          end
          else
          begin
            // draw vertical lines between data
            for i := 1 to iColumnCount - 1 do
            begin
              MoveTo(aCols[i], topMarg);
              LineTo(aCols[i], TopMarg + (TekstHeight * (LinesOnPage + 1)));
            end;
          end;

          Font.Style := [fsBold];
          // print column headers
          for i := 0 to iColumnCount - 1 do
          begin
            TextRect(Rect(aCols[i] + Round(0.1 * h), TopMarg - Round(0.1 * v), aCols[i + 1] - Round(0.1 * h)
              , TopMarg + TekstHeight - Round(0.1 * v)), ((aCols[i + 1] - aCols[i]) div 2) +
              aCols[i] - (TextWidth(oListview.Columns.Items[i].Caption) div 2),
              TopMarg - Round(0.1 * v), oListview.Columns.Items[i].Caption);
            //showmessage('print kolom: '+IntToStr(i));
          end;

          // draw horizontal line beneath column headers
          MoveTo(aCols[0] - Round(0.1 * h), TopMarg + TekstHeight - Round(0.05 * v));
          LineTo(aCols[iColumnCount] + Round(0.1 * h), TopMarg + TekstHeight - Round(0.05 * v));

          // print date and page number
          Font.Size := 8;
          Font.Style := [];
          TmpPos := (TextWidth('Date: ' + DateToStr(Date) + ' Page: ' +
            IntToStr(Printer.PageNumber) + ' / ' + IntToStr(NumPages))) div 2;

          TmpPos := PWidth - Round(1.5 * h) - (TmpPos * 2);

          Font.Size := 8;
          Font.Style := [];
          TextOut(TmpPos, Round(0.5 * v), 'Date: ' + DateToStr(Date) +
            ' Page: ' + IntToStr(Printer.PageNumber) + ' / ' + IntToStr(NumPages));

          // print report title
          Font.Size := 18;
          if TmpPos < ((PWidth + TextWidth(lvTitel)) div 2 + Round(0.75 * h)) then
            TextOut((PWidth - TextWidth(lvTitel)) div 2, Round(1 * v), lvTitel)
          else
            TextOut(Round(3 * h), Round(1 * v), lvTitel);

          Font.Size := 10;
          Font.Style := [];
        end;

        CurRect.Top := TopMarg + (CurLine * TekstHeight);
        CurRect.Bottom := TopMarg + ((CurLine + 1) * TekstHeight);

        // print contents of Listview
        for CurCol := -1 to iColumnCount - 2 do
        begin
          CurRect.Left := aCols[CurCol + 1] + Round(0.1 * h);
          CurRect.Right := aCols[CurCol + 2] - Round(0.1 * h);
          try
            if CurCol = -1 then
              CurStr := oListView.Items[CurItem].Caption
            else
              CurStr := oListView.Items[CurItem].SubItems[CurCol];
          except
            CurStr := '';
          end;
          CurLeft := CurRect.Left; // align left side
          // write string in TextRect
          TextRect(CurRect, CurLeft, CurRect.Top, CurStr);
        end;
        Inc(CurLine);
      end;
    end;
    Printer.EndDoc;
  end;
end;

DeddyH 3. Feb 2009 10:23

Re: Druck speichern
 
Statt auf Printer.Canvas kann man ja auch auf eine andere Zeichenfläche zeichnen. Die Größe müsste man dann halt auf die Papiergröße des Druckers setzen. Und wo der Drucker eine neue Seite beginnt, erstellt man eben eine neue Grafik.

p80286 3. Feb 2009 17:25

Re: Druck speichern
 
Hallo Larsi,

warum packst Du den Inhalt von Curstr nicht einfach in eine Tstringlist und speicherst am Ende mit SaveToFile?

Ist zwar nicht elegant aber funktioniert.

Gruß K-H


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