B4J Question [solved] QrGenerator AddBitmap

[udg]

Hi all,

on post #18 of the b4x library QrGenerator, there's some code that calls qr.AddBitmap but compiler gives error since it appears there's no sub with that name in the module.
QrGenerator version 1.60

My goal is to add some overlying text on a QrCode (exactly like the logo in the example). So even the use of the internal canvas with a DrawText would be ok for me.

Can you help? TIA

 

[Erel]

Add a Label or Panel or ImageView above the ImageView that shows the QR code.

 

[udg]

Hi @Erel,
I'm not sure to understand it correctly.
If I simply overwrite a portion of a QrCode (provided it's a limited area) the reader would be given enough information to correctly decode? I think so since it should be the reason for an ECC embedded in the code itself.
So, it doesn't matter if I add the "error" before encoding or after its generation?

Update: sorry, re-reading the above, showed me how unclearly I expressed myself. I generate a QrCode; then I put a label or a second imageview over the original one sporting the code. Then I have to "fuse" them in a single image/bitmap in order to save it as a file. Is that what you suggest?
Why not "alter" the final QrCode writing on its canvas or mixing two bitmaps (one from qr.create and the other sporting a logo) while in the generation of the code step?

Second question is "what is AddBitmap" and where am I supposed to find it? I mean, "as is" the showed code on original thread wouldn't work, right?

 

[Erel]

If I simply overwrite a portion of a QrCode (provided it's a limited area) the reader would be given enough information to correctly decode?

Yes.

Second question is "what is AddBitmap" and where am I supposed to find it?

Check the project attached to post #18.

 

[udg]

Check the project attached to post #18.

Found, thank you.
Should we consider it an "official" addition to next version of QrGenerator or was it there just for that specific demo code?

 

[Erel]

It was just an esoteric example. The official version is the one attached to the first post.