AutoLISP: Add a QRCODE To Your Drawing

Lately, these high tech barcodes called “qrcodes” are becoming very popular. With certain cell phone apps, you can take a picture with your smart phone and the phone will quickly process the qrcode and can direct you to a website or present text.

I don’t care much for the novelty of these codes. But what I think can be useful about them is that they can be a way to insert a “secret signature” into your drawing to protect your drawing. You can insert your name or website, without overtly inserting text throughout your drawing.

Here’s How:

  • QRCODE <enter> to start
  • Enter text or a website address to be hidden within the code
  • <enter> when finished entering text.
  • Click to specify insertion point for the QRCODE  as a block

The QRCODE is inserted as a block so the following questions are typical questions concerning blocks.

  • Specify the X scale factor – Default is 1 so I just accept this <enter>
  • Specify the Y scale factor – Default is 1 so I also accept this <enter>
  • Specify “Rotation Angle” – Default is 0 so I also also accept this <enter>
;*********************************************************************************

; QRCODE for Autocad

; © 2010 swisscad / Ian Vogel

; V 0.91 released 2010.08.22

;*********************************************************************************

(defun c:QRcode ( / str)

(cond

((not (validstr (setq str (getstring "\nEnter Text to encode :" T))))

(princ "\nNo text entered")

)

((QRcode str (setq name "QRCode") 0)

(command "_REGENALL")

(command "_INSERT" name)

)

)

(princ)

)

(defun QRcode (string ; string to encode

blockname ; name of the block to create

options ; options

; 1 = perform only if block already exists

/ QR x y startx row)

(vl-load-com)

(cond

((not (validstr blockname)))

((or (zerop (logand 1 options))

(tblsearch "BLOCK" blockname)

)

(setq baseurl "www.xcad.ch/tests/getqrcode.php")

(setq QR (valstr (gethttp (strcat baseurl"%3Fstring=" (urlencode(urlencode string))) 0)))

(cond

((eq (substr QR 1 6) "111111");response OK

(setq QR (split QR "-")

y 0)

;create Qrcode block

(entmake (list '(0 . "BLOCK")

(cons 2 blockname)

'(8 . "0")

'(70 . 0)

'(10 0.0 0.0 0.0)

)

)

(foreach row QR

(setq x 0)

(while (< x (strlen row))

(cond

((eq (substr row (1+ x) 1) "1")

;memorize start of filled zone

(if (not startx)(setq startx x))

(if (not (eq (substr row (+ x 2) 1) "1"))

(progn

;draw filled zone

(entmake (list (cons 0 "SOLID")

(cons 8 "0")

(cons 10 (list startx y))

(cons 11 (list (1+ x) y))

(cons 12 (list startx (1- y)))

(cons 13 (list (1+ x)(1- y)))

(cons 62 0)

)

)

(setq startx nil)

))

))

(setq x (1+ x))

)

(setq y (1- y))

)

;end of block

(setq bl_a (entmake '((0 . "ENDBLK"))))

)

)

T

))

)

;-------------------------------------------------------

; Get an URL

;-------------------------------------------------------

(defun gethttp (lien

opt

/ fi line tmp util content)

(setq util (vla-get-Utility

(vla-get-ActiveDocument (vlax-get-acad-object))

)

)

(if (eq (vla-isurl util lien) :vlax-true)

(if (vl-catch-all-error-p

(vl-catch-all-apply

'vla-GetRemoteFile

(list util lien 'tmp :vlax-true)

)

)

(princ "\nError getting http file.")

(progn

(setq fi (open tmp "r")

content "")

(while (setq line (read-line fi))

(setq content (strcat content line))

)

(close fi)

)

)

)

content

)

;-------------------------------------------------------

; Turn any var to a string

;-------------------------------------------------------

(defun valstr (val)

(cond

((eq (type val) 'STR) val)

((eq (type val) 'REAL) (rtos val))

((eq (type val) 'INT) (itoa val))

(T "")

))

;-------------------------------------------------------

; Check that a string is not empty

;-------------------------------------------------------

(defun validstr (str / tmp)

(if (> (strlen (setq tmp (trim (valstr str)))) 0) tmp nil)

)

;-------------------------------------------------------

; Remove blanks from a string

;-------------------------------------------------------

(defun trim ( str / )

(setq str (valstr str))

(while (eq (substr str 1 1) " ")

(setq str (substr str 2))

)

(while (and (> (strlen str) 1)

(eq (substr str (strlen str) 1) " ")

)

(setq str (substr str 1 (- (strlen str) 1)))

)

str

)

;-------------------------------------------------------

; Split a string

;-------------------------------------------------------

(defun split (str ; string to split

cara ; separator

/ n portion xstring seqstart chrcode portion)

(cond

((and (= (type str)(type cara) 'STR)(eq (strlen cara) 1))

(setq n -1 seqstart 1 chrcode (ascii cara))

(while (setq n (vl-string-position chrcode str (+ n 1) nil))

(setq xstring (append xstring (list (substr str seqstart (- n seqstart -1)))) seqstart (+ n 2) )

)

(setq xstring (append xstring (list (substr str seqstart))))

(if xstring xstring (list str))

)

((= (type str)(type cara) 'STR)

(setq portion "" n 1)

(if (<= (strlen cara) (strlen str))

(progn

(while (<= n (strlen str))

(if (eq (substr str n (strlen cara)) cara)

(setq xstring (append xstring (list portion))

portion ""

n (+ n (strlen cara))

)

(setq portion (strcat portion (substr str n 1))

n (+ 1 n)

)

)

)

(if (or (> (strlen portion) 0)

(eq (substr str (abs (- (strlen str)(strlen cara) -1))) cara)

)

(setq xstring (append xstring (list portion)))

)

)

(setq xstring (list str))

)

(if xstring xstring (list ""))

)

(T (list nil))

)

)

;----------------------------------------------------------

; See PHP function

; http://ch2.php.net/manual/fr/function.htmlentities.php

;----------------------------------------------------------

(defun urlencode (str / result n len )

(setq result ""

n 1

len (strlen str))

(while (<= n len)

(setq result (strcat result (urlenc (substr str n 1)))

n (+ 1 n))

)

result

)

(defun urlenc (ch)

(cond

((eq ch " ") " ");+

((eq ch "!") "%21")

((eq ch "\"") "%22")

((eq ch "#") "%23")

((eq ch "$") "%24")

((eq ch "%") "%25")

((eq ch "&") "%26")

((eq ch "'") "%27")

((eq ch "(") "%28")

((eq ch ")") "%29")

((eq ch "*") "%2A")

((eq ch "+") "%2B")

((eq ch ",") "%2C")

((eq ch "/") "%2F")

((eq ch ":") "%3A")

((eq ch ";") "%3B")

((eq ch "<") "%3C")

((eq ch "=") "%3D")

((eq ch ">") "%3E")

((eq ch "?") "%3F")

((eq ch "@") "%40")

((eq ch "[") "%5B")

((eq ch "\\") "%5C")

((eq ch "]") "%5D")

((eq ch "^") "%5E")

((eq ch "`") "%60")

((eq ch "{") "%7B")

((eq ch "|") "%7C")

((eq ch "}") "%7D")

((eq ch "~") "%7E")

((eq ch "‘") "%91")

((eq ch "’") "%92")

((eq ch "¡") "%A1")

((eq ch "¢") "%A2")

((eq ch "£") "%A3")

((eq ch "¤") "%A4")

((eq ch "¥") "%A5")

((eq ch "¦") "%A6")

((eq ch "§") "%A7")

((eq ch "¨") "%A8")

((eq ch "©") "%A9")

((eq ch "ª") "%AA")

((eq ch "«") "%AB")

((eq ch "¬") "%AC")

((eq ch "­") "%AD")

((eq ch "®") "%AE")

((eq ch "¯") "%AF")

((eq ch "°") "%B0")

((eq ch "±") "%B1")

((eq ch "²") "%B2")

((eq ch "³") "%B3")

((eq ch "´") "%B4")

((eq ch "µ") "%B5")

((eq ch "¶") "%B6")

((eq ch "·") "%B7")

((eq ch "¸") "%B8")

((eq ch "¹") "%B9")

((eq ch "º") "%BA")

((eq ch "»") "%BB")

((eq ch "¼") "%BC")

((eq ch "½") "%BD")

((eq ch "¾") "%BE")

((eq ch "¿") "%BF")

((eq ch "À") "%C0")

((eq ch "Á") "%C1")

((eq ch "Â") "%C2")

((eq ch "Ã") "%C3")

((eq ch "Ä") "%C4")

((eq ch "Å") "%C5")

((eq ch "Æ") "%C6")

((eq ch "Ç") "%C7")

((eq ch "È") "%C8")

((eq ch "É") "%C9")

((eq ch "Ê") "%CA")

((eq ch "Ë") "%CB")

((eq ch "Ì") "%CC")

((eq ch "Í") "%CD")

((eq ch "Î") "%CE")

((eq ch "Ï") "%CF")

((eq ch "Ð") "%D0")

((eq ch "Ñ") "%D1")

((eq ch "Ò") "%D2")

((eq ch "Ó") "%D3")

((eq ch "Ô") "%D4")

((eq ch "Õ") "%D5")

((eq ch "Ö") "%D6")

((eq ch "×") "%D7")

((eq ch "Ø") "%D8")

((eq ch "Ù") "%D9")

((eq ch "Ú") "%DA")

((eq ch "Û") "%DB")

((eq ch "Ü") "%DC")

((eq ch "Ý") "%DD")

((eq ch "Þ") "%DE")

((eq ch "ß") "%DF")

((eq ch "à") "%E0")

((eq ch "á") "%E1")

((eq ch "â") "%E2")

((eq ch "ã") "%E3")

((eq ch "ä") "%E4")

((eq ch "å") "%E5")

((eq ch "æ") "%E6")

((eq ch "ç") "%E7")

((eq ch "è") "%E8")

((eq ch "é") "%E9")

((eq ch "ê") "%EA")

((eq ch "ë") "%EB")

((eq ch "ì") "%EC")

((eq ch "í") "%ED")

((eq ch "î") "%EE")

((eq ch "ï") "%EF")

((eq ch "ð") "%F0")

((eq ch "ñ") "%F1")

((eq ch "ò") "%F2")

((eq ch "ó") "%F3")

((eq ch "ô") "%F4")

((eq ch "õ") "%F5")

((eq ch "ö") "%F6")

((eq ch "÷") "%F7")

((eq ch "ø") "%F8")

((eq ch "ù") "%F9")

((eq ch "ú") "%FA")

((eq ch "û") "%FB")

((eq ch "ü") "%FC")

((eq ch "ý") "%FD")

((eq ch "þ") "%FE")

((eq ch "ÿ") "%FF")

(T ch)

)

)

(princ "\nType QRCODE")

(princ)



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About AutoCAD Tips

This blog serves as a knowledge base for myself (and anyone else) so that I can reference tips & tricks that I have learned and also refer others to it as well. I hope that this blog helps you learn at least one tip to make your drafting/design experience better.
This entry was posted in AutoLISP, Blocks, Customization, Text, TIPS. Bookmark the permalink.

5 Responses to AutoLISP: Add a QRCODE To Your Drawing

  1. Jeff says:

    Very cool! will it allow for multiline text, an address for instance?

    • AutoCAD Tips says:

      It currently doesn’t allow multiline (carriage return). As soon as you do so, it exits exits the text portion. I thought about that too. The problem with allowing for carriage returns is how will you determine when you are done entering text? I am planning on tweaking this to allow for it. the only way that I thought of to allow this is to allow for carriage returns and then when your done entering text, right click to accept the text…

  2. Miguel A. says:

    Hi, I have a Mac OsSX and AutoCAD 2013 and the following error come up: ; error: vl-load-com not supported on “Mac OS X Version 10.8 (x86_64)”

    How can I fix this issue?

  3. mathasis says:

    any source code can share, because I am a new comer here

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