TeeGrid OnTap

[TheOtherPrefontaine]

How can I work with the const Point: TPointF to determine the row that was tapped?

I am trying to change the selected row when the user taps the grid.

TIA

[TheOtherPrefontaine]

Really would like a reply to this. It has me stumped.

[Marc]

Hello,

Apologies for the delay with the reply. The detail for the information required is found via:

Code: Select all

var myColumn : TColumn;
      myRow : Integer;
      myX; myY: Integer;
begin
  //myX := x
  //myY := y
  myColumn := TeeGrid1.Columns.FindAt(myX,TeeGrid1.Width);
  myRow := TeeGrid1.Rows.RowAt(myY,TeeGrid1.Height);

  ShowMessage ('Col: ' + IntToStr(myColumn.ID) + ' Row: ' +  IntToStr(myRow));
end;

That could source from the x,y of a mousedown/up or the Point of a Tap but we're delayed on getting to the test for the tap.

Regards,
Marc

[TheOtherPrefontaine]

Thanks mcuh! I'll try it out tonight.

[TheOtherPrefontaine]

This worked very well:

Code: Select all

procedure TFudleyMain.TeeGrid1Tap(Sender: TObject; const Point: TPointF);
var
      myRow : Integer;
      myX, myY: single;
      hgt : single;
begin
  myX := point.X;
  myY := point.Y;
  hgt :=  TeeGrid1.Height;

  myRow := TeeGrid1.Rows.RowAt(myY,hgt);
  TeeGrid1.Selected.Row :=myRow;
end;

[Marc]

Great, thanks for the feedback.

[TheOtherPrefontaine]

Unfortunately TeeGrid1.Rows.RowAt only works to row 7. Past that it returns -1, even though there are several rows past that.

[TheOtherPrefontaine]

I should clarify what I am trying to do.

This is for mobile only. I would like the user to be able to tap on the row they want to move to, and the selected row/record becomes the one tapped on.

Any help you can offer is appreciated.

[TheOtherPrefontaine]

So is this a bug?

[Marc]

Hello,

I've tried it in the CellEditors project (FMX on Windows) with the following co-ordinates;

Code: Select all

procedure TFormCellEditors.Button1Click(Sender: TObject);
var myColumn : TColumn;
    myRow : Integer;
begin
  myColumn := TeeGrid1.Columns.FindAt(160,TeeGrid1.Width);
  myRow := TeeGrid1.Rows.RowAt(218,TeeGrid1.Height);

and it returns correctly, column 2, row 9.

It may be a problem limited to Tap. What mobile devices have you tried?

With thanks.
Regards,
Marc Meumann

[TheOtherPrefontaine]

Hi Marc,

I'm using a Galaxy S10E.

-garry

[TheOtherPrefontaine]

Amy ideas on this?

[TheOtherPrefontaine]

I've attached a small screen shot.

You can see the selected row, and also a light blue rectangle around the cell I just tapped on. So teegrid knows I tapped there since it painted the light blue rectangle, but its just not moving the selection.

Hope this provides a clue to what's happening. I really need this to work, as users on android will expect a tap to change the selection .

Thanks much!

[Marc]

Hello Garry,

Apologies that you're not getting a quick answer for this. Resource time is being assigned to the issue and hopefully we can get some feedback to you very soon.

Regards,
Marc

[Marc]

Hello Garry,

This is still checking out ok on tests on a mobile device. In this case a Realme 6 on Android 11.

I can make the test project available if you think it may be useful. It runs 10,000 lines and marks the selected row as an arrow at row beginning. I put a label in to confirm the selected row.

It reports badly only for the last row on a visible screen where the row is not complete. In this case it returns a -1.

Using RAD Studio 12 with TeeGrid v1.14.

Apologies once again for taking so long to get here.

Regards,
Marc