Android Question [SOLVED] Floating signature in pdf

[makis_best]

Hi.

I create a pdf file showing one invoice.
At the and of the invoice I show the total cost of the invoice as the signature "ΥΠΟΓΡΑΦΗ in Greek" of the client.
The problem I have is that I can't make the signature printed under the word "ΥΠΟΓΡΑΦΗ" depends of the lines of invoice.
I mean the signature mast show higher or lower depends of the lines of the invoce.

I use this code to print the signature into pdf canvas.

Dim Cursor1 As Cursor = Starter.LocalSQL.ExecQuery2("SELECT TheSignature FROM LOCAL_Temp_Order_Header WHERE OrderCode = ?", Array As String(OrderNum))
        Cursor1.Position = 0
        Dim Buffer() As Byte = Cursor1.GetBlob("TheSignature")
        Dim InputStream1 As InputStream
        InputStream1.InitializeFromBytesArray(Buffer, 0, Buffer.Length)
        Dim Bitmap1 As Bitmap
        Bitmap1.Initialize2(InputStream1)
        InputStream1.Close
'        Activity.SetBackgroundImage(Bitmap1)
        Dim DestRect As Rect
        DestRect.Initialize(100dip, 10dip, 200dip + 100dip, 150dip + 100dip)
        pdf.Canvas.DrawBitmap(Bitmap1, Null, DestRect)

Any idea how to solve this one?
I want the result show on picture.

 

[Erel]

How are you formatting the text?

Looks like you need to add a panel with a label and ImageView. You can draw it with Panel.Snapshot.

 

[makis_best]

My problem is not how to draw the signature.
My problem is how to move the signature, higher or lower on the page based on lines printed.

 

[Erel]

Not trivial but possible with BCTextEngine. You haven't told us enough information to say anything concrete but this example might be relevant: https://www.b4x.com/android/forum/t...o-a-piece-of-text-is-possible.120429/#content

 

[hatzisn]

@makis_best how do you draw/write each line in the invoice? Can't you have a pointer of type Long f.e.? That way you could calculate the lowest line and draw the signature accordingly. Another trick would be to have a fixed height and draw the signature for example at the lowest part of the page as well as the Partial sum, VAT and Total sum.

 

[makis_best]

@makis_best how do you draw/write each line in the invoice? Can't you have a pointer of type Long f.e.? That way you could calculate the lowest line and draw the signature accordingly. Another trick would be to have a fixed height and draw the signature for example at the lowest part of the page as well as the Partial sum, VAT and Total sum.

@hatzisn You mean a counter witch hold the number of lines as looping into pdf and use the counter for the new position?
I think that can work.... I try it and I be back.

 

[makis_best]

Your idea with the counter working perfect... Thanks for sharing @hatzisn