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Delphi. How do I position a Rectangle in a Rave Report around a virtual cell derived from a String Grid

Posted on 2010-09-02
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Last Modified: 2012-05-10
I am using data from a String Grid to populate vitual cells in a Rave Report.  The vitual cells are created using a series of NewLine and SetTab commands.  How can I calculate the exact top left and bottom right coordinates of a cell in order to draw a rectangle around selected cells only.
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Question by:HenryM2
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Expert Comment

by:aflarin
ID: 33594206
something like this:

function TForm1.RvSystem1PrintPage(Sender: TObject; var PageNum: Integer):
    Boolean;
var
  iCol, iRow : Integer;
begin
  with Sender as TBaseReport do
    ....
    iCol:= 5;
    iRow:= 5;
    Rectangle( GetTab(iCol).Pos,
               iRow*LineHeight,
               GetTab(iCol).Pos + GetTab(iCol).Width,
               (iRow+1)*LineHeight
              );
 end;
end;
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Author Comment

by:HenryM2
ID: 33594393
I am not 100% sure how you are thinking of implementinh this function with the rest of my program.  What role does PageNum in the Function parameters play?

I subsequintly used your code section inside my report building procedure.  Although I can see what your thinking is here, the report comes out very wrong as per the attached picture.  Above the red line, the String Grid and below, the resulting report.  This is what my code looks like:

        CellText := ReportStringGrid.Cells[iCol, iRow];

        if iCol = 0 then
        SetFont('Arial', 8)
        else
        SetFont('Arial', 10);

        if CellText = '' then
        Begin
          PrintTab('  ' + chr(7));
        End
        else
        Begin
          if ReportStringGrid.Cells[iCol, iRow] = '[   ]' then
          Begin
             Rectangle( GetTab(iCol).Pos, iRow*LineHeight,
             GetTab(iCol).Pos + GetTab(iCol).Width,
             (iRow+1)*LineHeight );
          End
          else
          PrintTab(ReportStringGrid.Cells[iCol, iRow]);
        End;
      End;
      NewLine;

Also, I would like to replace the large dots in the empty cells with a smaller dot.  chr(7) is all I can find that works, is there a better way to do this?
Cell-Borders-In-Rave-Report.png
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LVL 13

Expert Comment

by:aflarin
ID: 33594511
as I thought you asked about about absolute coordinates, but if you draw a rectangle whilr printing text it would be better to use current y pos like this:

          ....
          if ReportStringGrid.Cells[iCol, iRow] = '[   ]' then
          Begin
            Rectangle( GetTab(iCol+1).Pos,
                              YPos - LineHeight,
                              GetTab(iCol+1).Pos + GetTab(iCol+1).Width,
                               YPos );
            PrintTab(''); // print nothing to go next tab
          End
          else
          ....        
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LVL 13

Expert Comment

by:aflarin
ID: 33594534
>> Also, I would like to replace the large dots in the empty cells with a smaller dot.  chr(7) is all I can find that works, is there a better way to do this?

Originally, chr(7) produces beep. So it would be better use dot or other char. To make it smaller you can just change font like this:

    // set smaller font
   SetFont('Arial', 5);
   PrintTab(' . ');
   // return original font
   SetFont('Arial', 10);
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Author Comment

by:HenryM2
ID: 33594579
>> as I thought you asked about about absolute coordinates, but if you draw a rectangle whilr printing text it would be better to use current y pos like this:

The TopLeft of the Tab and LinHeight works fine adn the rectangle starts in the correct place and is the correct height.  The width of the rectangle however spans over about 3 consecutive tabs.

Originally, chr(7) produces beep. So it would be better use dot or other char. To make it smaller you can just change font like this:

I originally used ' . ' instead of chr(7).  The problem is that I would like the dot to be in the middle of the row not the bottom as with ' . '.  Can one perhaps use some other graphic dot from the Rave Functions instead?
 
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LVL 13

Expert Comment

by:aflarin
ID: 33594668
try to use chr(149) instead of dot

>> The width of the rectangle however spans over about 3 consecutive tabs.

Hm. It works well for me. Could you show the full procedure and produced report?
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Author Comment

by:HenryM2
ID: 33595064
Ok 149 just prints blank in columns.

Attached my whole Procedure as its now.  The report has to include a page break when the number of lines (children) underneath certain section is too long in order to keep the sections on one page.  In preparation of the Text Grid, I add the characters *(xx), where xx represents the number of children under that parent) at the end of the lines where the children under that line is to be grouped with the parent line.  Children can be seen as indented under the parents.
procedure TReportsFrm.PrintReportStringGrid(Sender: TObject);
Const Col0Width = 3.8;
      CheckColWidth = 0.2;
      HeaderHeight = 2.0;
 procedure PrintGridHeader;
  var
    iCol: Integer;
    curY: Double;
  begin
    with Sender as TBaseReport do
    begin
      SetFont('Arial', 14);
      NewLine;
      PrintCenter(ReportName, 4); // Report Title
      YPos:= YPos + HeaderHeight; // Sets bottom start for bottom of vertical text header cols
      SetFont('Arial', 10);
      FontRotation:= 90;
      Bold := True;
      TabJustify:= tjLeft;
      for iCol:= 1 to ReportStringGrid.ColCount-1 do
      begin
        curY:= YPos;

        PrintXY( Col0Width{Col[0] width } + iCol*CheckColWidth {Col width} + 0.15{some shift}, YPos, ReportStringGrid.Cells[iCol, 0]);
        YPos:= curY;
      end;
      //NewLine;
      Bold := False;
      FontRotation:= 0;
      YPos := YPos + 0.15;
      MoveTo( 0.2, YPos );
      LineTo( PageWidth - 0.2, YPos );
      YPos := YPos + 0.2;
    end;
  end;

  procedure PrintGridFooter;
  var QtyPages : Integer;
  begin
  with Sender as TBaseReport do
    begin
      YPos := YPos + 0.1;
      MoveTo( 0.15, YPos);
      LineTo( PageWidth - 0.2, YPos ); // Line at bottom of the page
      NewLine;
      NewLine;

      QtyPages := (ReportStringGrid.RowCount div 50);
      if (ReportStringGrid.RowCount mod 50) > 0 then
      inc(QtyPages);
      PrintCenter('Page ' + IntToStr(CurrentPage) + ' Of ' + IntToStr(QtyPages), PageWidth/2);
    end;
  end;

var
  iCol, iRow, QtyChildren, ChildCountPos : Integer;
  PageInfoStr, CellText : String;
  CurrentFont : TFont;
begin
  with Sender as TBaseReport do
  begin
    //NewLine;
    // PrintCenter(ReportType, 4); // Report Title
    //NewLine;
    ClearTabs;
    SetTab(0.2, pjLeft, Col0Width, 0, 0, 0); // SetTab(NewPos: double; NewJustify: TPrintJustify; NewWidth: double; NewMargin: double; NewLines: byte; NewShade: byte);
    for iCol:= 1 to ReportStringGrid.ColCount-1 do
      SetTab(Col0Width + iCol*CheckColWidth, pjRight, 0.5, 0, 0, 0);

    PrintGridHeader;

    Bold := False;
    for iRow := 1 to ReportStringGrid.RowCount - 1 do
    begin
      for iCol:= 0 to ReportStringGrid.ColCount-1 do
      Begin

        CellText := ReportStringGrid.Cells[iCol, iRow];

        if iCol = 0 then
        Begin
          ChildCountPos := Pos(' *(', CellText);
          if ChildCountPos > 0 Then
          Begin
            //CTL := Length(CellText);
            //ChildCountPos := ChildCountPos + 3;
            //ChildrenText := Copy(CellText,(ChildCountPos + 3), Length(CellText) - (ChildCountPos + 3));
            QtyChildren := StrToInt(Copy(CellText,(ChildCountPos + 3), Length(CellText) - (ChildCountPos + 3)));
            if iRow + QtyChildren > 49 then
            Begin
              PrintGridFooter;
              NewPage;
              PrintGridHeader;
            End;
          End;
        End;

        if iCol = 0 then
        SetFont('Arial', 8)
        else
        SetFont('Arial', 10);

        if CellText = '' then
        Begin
          PrintTab('  ' + chr(7));
        End
        else
        Begin
          if ReportStringGrid.Cells[iCol, iRow] = '[   ]' then
          Begin
            Rectangle( GetTab(iCol+1).Pos,
                              YPos - LineHeight,
                              GetTab(iCol+1).Pos + GetTab(iCol+1).Width,
                               YPos );
            PrintTab(''); // print nothing to go next tab
          End
          else
          PrintTab(ReportStringGrid.Cells[iCol, iRow]);
        End;
      End;
      NewLine;

      // 50 lines per page
      if (iRow mod 50) = 0 then
      begin
        PrintGridFooter;
        NewPage;
        PrintGridHeader;
      end;

    end;
    PrintGridFooter;
  end;
end;

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Cell-Borders.png
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LVL 13

Expert Comment

by:aflarin
ID: 33595224
I see. You didn't change the tab width to the new right value. Change it here and your code will work:

    for iCol:= 1 to ReportStringGrid.ColCount-1 do
        SetTab(Col0Width + iCol*CheckColWidth, pjRight, CheckColWidth, 0, 0, 0);



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LVL 13

Accepted Solution

by:
aflarin earned 500 total points
ID: 33595346
>> Ok 149 just prints blank in columns.

ASCII codes that greater than 127 may be different in various character sets. Unfortunately there is not a centered dot with code 0-127.

You have 3 ways:

1. you can find the centered dot in your character set. Use Character Map app (All Programs > Accessories > System Tool ) to find it

2. you can draw a dot instead of printing it. Use this method:

procedure Ellipse(X1,Y1,X2,Y2: double);
Description
This method draws an ellipse bounded by the rectangle defined by (X1,Y1) and (X2,Y2).

3. You set smaller font to print char(7)
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Author Closing Comment

by:HenryM2
ID: 33596348
>> I see. You didn't change the tab width to the new right value. Change it here and your code will work:

Thanks, Stupid mistake, I guess I still have to used to Rave Reportsm but I like what I see so far.


>> 2. you can draw a dot instead of printing it. Use this method:

This work fine.
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