Display a pre-printed form (such as a money transfer form) as part of the page.
This example requires to use the event OnMeasurePage as well. In this event we reserve space at the bottom of the first page:
const PR_Form_Height = 10.5; // Form Height in CM
PR_Form_Width = 15.0;
procedure TForm1.WPRichText1MeasureTextPage(Sender: TObject;
PageInfo: TWPMeasurePageParam);
begin
// We want to make sure the first page has a bottom margin which is
// large enough for our form
if PageInfo.pagenr = 1 then
begin
PageInfo.marginbottom := WPCentimeterToTwips(PR_Form_Height);
PageInfo.changed := TRUE;
end;
end;
The PaintWatermark code only draws on the first page:
procedure TForm1.WPRichText1PaintWatermark(Sender: TObject;
RTFEngine: TWPRTFEnginePaint; toCanvas: TCanvas; PageRect: TRect;
PaintPageNr, RTFPageNr: Integer; WaterMarkRef: TObject; XRes,
YRes: Integer; CurrentZoom: Single; PaintMode: TWPPaintModes);
// ~~~~~~~~~~~~~~~~~~~~~ Convert CM values into pixel ~~~~~~~~~~~~~
function XP(cm: Double): Integer;
begin
Result := MulDiv(WPCentimeterToTwips(cm), Xres, 1440);
end;
function YP(cm: Double): Integer;
begin
Result := MulDiv(WPCentimeterToTwips(cm), Yres, 1440);
end;
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
var r, r2: TRect;
off, w: Integer;
begin
if PaintPageNr = 0 then
begin
r := PageRect;
r.Top := r.Bottom - YP(PR_Form_Height);
toCanvas.Pen.Color := clBlack;
toCanvas.Pen.Style := psDash;
toCanvas.MoveTo(r.Left, r.Top);
toCanvas.LineTo(r.Right, r.Top);
// Draw the form at the right bottom border
r.Left := r.Right - XP(PR_Form_Width);
// Draw line
toCanvas.MoveTo(r.Left, r.Top);
toCanvas.LineTo(r.Left, r.Bottom);
// Draw the sizzors
toCanvas.Font.Name := 'WingDings';
toCanvas.Font.Height := -YP(0.5);
toCanvas.TextOut( PageRect.Left + XP(0.7), r.Top-
toCanvas.TextHeight(#$22) div 2 , #$22 );
// This is background of the form, we do not draw this when
// we are printing!
if wppInPaintDesktop in PaintMode then
begin
r2 := r;
inc(r2.Left,XP(0.1));
inc(r2.Top,YP(0.1));
toCanvas.Brush.Color := clYellow;
toCanvas.FillRect(r2);
end;
// This are the form text
toCanvas.Brush.Color := clWhite;
toCanvas.Font.Name := 'Courier New';
toCanvas.Font.Height := -YP(0.5);
toCanvas.Font.Style := [fsBold];
off := YP(0.1);
// NAME
r2.Left := r.Left + XP(1.0);
r2.Top := r.Top + YP(2);
r2.Right := r2.Left + XP(10);
r2.Bottom := r2.Top + YP(0.7);
toCanvas.FillRect(r2);
toCanvas.TextOut(r2.Left + off, r2.Top + off, NameE.Text);
// ADR
r2.Left := r.Left + XP(1.0);
r2.Top := r.Top + YP(5.5);
r2.Right := r2.Left + XP(10);
r2.Bottom := r2.Top + YP(0.7);
toCanvas.FillRect(r2);
toCanvas.TextOut(r2.Left + off, r2.Top + off, AdrE.Text);
// COST, right aligned
r2.Left := r.Left + XP(8.5);
r2.Top := r.Top + YP(4.5);
r2.Right := r2.Left + XP(5);
r2.Bottom := r2.Top + YP(0.7);
toCanvas.FillRect(r2);
w := toCanvas.TextWidth(CostE.Text);
toCanvas.TextOut(r2.Right - off - w, r2.Top + off, CostE.Text);
// For Debugging
// Draw a Line at 10,10 CM
if DrawDebugCross.Checked then
begin
toCanvas.TextOut( PageRect.Left+XP(10), PageRect.Top, '10');
toCanvas.TextOut( PageRect.Left, PageRect.Top+YP(10), '10');
toCanvas.MoveTo( PageRect.Left, PageRect.Top + YP(10));
toCanvas.LineTo( PageRect.Right, PageRect.Top + YP(10));
toCanvas.MoveTo( PageRect.Left+XP(10), PageRect.Top);
toCanvas.LineTo( PageRect.Left+XP(10), r.Top);
end;
end;
end;