uses
Printers;
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;