Package Exports

rescode

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (rescode) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Codes

Notice that I am not the author of the code, I am just the creator of an npm module out of the great library from https://code.google.com/p/bwip-js/.

Install

npm install rescode

Example loading specific barcode types

var codes = require("rescode");

function( res, req ) 
{
    // Sequence is important
    codes.loadModules(["ean2", "ean5", "ean8", "ean13"]);
    
    var data8 = codes.create("ean8","12345678");
    
    res.setHeader("Content-Type","image/png");
    res.end( data8 );
    
    OR
    
    res.end("<html><img src='data:image/png;base64,"+data8.toString("base64")+"' /></html>");
}

Example loading ean barcode types and setting specific options

var codes = require("rescode");

function( res, req ) 
{
    codes.loadModules(["ean2", "ean5"]);		
    codes.loadModules(["ean8"], { "includetext":false, "guardwhitespace":false, "inkspread":0, scaleX:3, textyoffset:-15 });
    codes.loadModules(["ean13"]);
    
    var data8 = codes.create("ean8","12345678");
    
    res.setHeader("Content-Type","image/png");
    res.end( data8 );
    
    OR
    
    res.end("<html><img src='data:image/png;base64,"+data8.toString("base64")+"' /></html>");
}

Example loading qrcode

var codes = require("rescode");

function( res, req ) 
{
  // Level L  - 7% of codewords can be restored
  // Level M  - 15% of codewords can be restored
  // Level Q  - 25% of codewords can be restored
  // Level H  - 30% of codewords can be restored
  // IMPORTANT white padding around qrcode 
  codes.loadModules("qrcode", { "eclevel":"M" , version: "4", scaleX: 2, scaleY: 2} );  
  
  var data = codes.create("qrcode","http://npmjs.org");
    
  res.setHeader("Content-Type","image/png");
  res.end( data );
  
  OR
  
  res.end("<html><img src='data:image/png;base64,"+data.toString("base64")+"' /></html>");
}

Configure

Choose in lib/codes.js the Adatper PNG ( binary png ) or Canvas ( dataURL (smaller size), but canvas has to be installed )

Thanks

To Jens Olsson for dynamic loading of the libraries