Merge pull request #2615 from jpclark/NewUI-flat

Provide blockie identicon option

.eslintignore

@@ -2,4 +2,5 @@ app/scripts/lib/extension-instance.js
 test/integration/bundle.js
 test/integration/jquery-3.1.0.min.js
 test/integration/helpers.js
-test/integration/lib/first-time.js
+test/integration/lib/first-time.js
+ui/lib/blockies.js

.gitignore

@@ -6,6 +6,8 @@ app/bower_components
 test/bower_components
 package
 
+.idea
+
 temp
 .tmp
 .sass-cache

app/scripts/controllers/preferences.js

@@ -9,11 +9,20 @@ class PreferencesController {
       frequentRpcList: [],
       currentAccountTab: 'history',
       tokens: [],
+      useBlockie: false,
     }, opts.initState)
     this.store = new ObservableStore(initState)
   }
 // PUBLIC METHODS
 
+  setUseBlockie (val) {
+    this.store.updateState({ useBlockie: val })
+  }
+
+  getUseBlockie () {
+    return this.store.getState().useBlockie
+  }
+
   setSelectedAddress (_address) {
     return new Promise((resolve, reject) => {
       const address = normalizeAddress(_address)

app/scripts/metamask-controller.js

@@ -315,6 +315,7 @@ module.exports = class MetamaskController extends EventEmitter {
       // etc
       getState: (cb) => cb(null, this.getState()),
       setCurrentCurrency: this.setCurrentCurrency.bind(this),
+      setUseBlockie: this.setUseBlockie.bind(this),
       markAccountsFound: this.markAccountsFound.bind(this),
 
       // coinbase
@@ -774,4 +775,13 @@ module.exports = class MetamaskController extends EventEmitter {
     return rpcTarget
   }
 
+  setUseBlockie (val, cb) {
+    try {
+      this.preferencesController.setUseBlockie(val)
+      cb(null)
+    } catch (err) {
+      cb(err)
+    }
+  }
+
 }

package.json

@@ -52,11 +52,11 @@
     ]
   },
   "dependencies": {
-    "abi-decoder": "^1.0.8",
+    "abi-decoder": "^1.0.9",
     "async": "^2.5.0",
     "await-semaphore": "^0.1.1",
     "babel-runtime": "^6.23.0",
-    "bignumber.js": "^4.0.4",
+    "bignumber.js": "^4.1.0",
     "bip39": "^2.2.0",
     "bluebird": "^3.5.0",
     "bn.js": "^4.11.7",
@@ -77,8 +77,8 @@
     "eslint-plugin-react": "^7.4.0",
     "eth-bin-to-ops": "^1.0.1",
     "eth-block-tracker": "^2.2.0",
-    "eth-hd-keyring": "^1.2.1",
     "eth-contract-metadata": "^1.1.5",
+    "eth-hd-keyring": "^1.2.1",
     "eth-json-rpc-filters": "^1.2.4",
     "eth-keyring-controller": "^2.1.2",
     "eth-phishing-detect": "^1.1.4",
@@ -100,9 +100,9 @@
     "extensionizer": "^1.0.0",
     "fast-json-patch": "^2.0.4",
     "fast-levenshtein": "^2.0.6",
-    "fuse.js": "^3.1.0",
+    "fuse.js": "^3.2.0",
-    "gulp": "github:gulpjs/gulp#4.0",
     "gulp-autoprefixer": "^4.0.0",
+    "gulp": "github:gulpjs/gulp#4.0",
     "gulp-eslint": "^4.0.0",
     "gulp-sass": "^3.1.0",
     "hat": "0.0.3",
@@ -144,12 +144,13 @@
     "react-hyperscript": "^3.0.0",
     "react-markdown": "^2.3.0",
     "react-redux": "^5.0.5",
-    "react-select": "^1.0.0-rc.2",
+    "react-select": "^1.0.0",
     "react-simple-file-input": "^2.0.0",
+    "react-toggle-button": "^2.2.0",
     "react-tooltip-component": "^0.3.0",
-    "react-transition-group": "^2.2.0",
+    "react-transition-group": "^2.2.1",
-    "reactify": "^1.1.1",
     "react-trigger-change": "^1.0.2",
+    "reactify": "^1.1.1",
     "readable-stream": "^2.3.3",
     "recompose": "^0.25.0",
     "redux": "^3.0.5",

ui/app/actions.js

@@ -234,6 +234,9 @@ var actions = {
   toggleAccountMenu,
 
   useEtherscanProvider,
+
+  SET_USE_BLOCKIE: 'SET_USE_BLOCKIE',
+  setUseBlockie,
 }
 
 module.exports = actions
@@ -1550,3 +1553,20 @@ function toggleAccountMenu () {
     type: actions.TOGGLE_ACCOUNT_MENU,
   }
 }
+
+function setUseBlockie (val) {
+  return (dispatch) => {
+    dispatch(actions.showLoadingIndication())
+    log.debug(`background.setUseBlockie`)
+    background.setUseBlockie(val, (err) => {
+      dispatch(actions.hideLoadingIndication())
+      if (err) {
+        return dispatch(actions.displayWarning(err.message))
+      }
+    })
+    dispatch({
+      type: actions.SET_USE_BLOCKIE,
+      value: val,
+    })
+  }
+}

ui/app/components/identicon.js

@@ -1,13 +1,15 @@
 const Component = require('react').Component
 const h = require('react-hyperscript')
 const inherits = require('util').inherits
+const connect = require('react-redux').connect
 const isNode = require('detect-node')
 const findDOMNode = require('react-dom').findDOMNode
 const jazzicon = require('jazzicon')
 const iconFactoryGen = require('../../lib/icon-factory')
 const iconFactory = iconFactoryGen(jazzicon)
+const { toDataUrl } = require('../../lib/blockies')
 
-module.exports = IdenticonComponent
+module.exports = connect(mapStateToProps)(IdenticonComponent)
 
 inherits(IdenticonComponent, Component)
 function IdenticonComponent () {
@@ -16,6 +18,12 @@ function IdenticonComponent () {
   this.defaultDiameter = 46
 }
 
+function mapStateToProps (state) {
+  return {
+    useBlockie: state.metamask.useBlockie,
+  }
+}
+
 IdenticonComponent.prototype.render = function () {
   var props = this.props
   const { className = '', address } = props
@@ -51,38 +59,59 @@ IdenticonComponent.prototype.render = function () {
 
 IdenticonComponent.prototype.componentDidMount = function () {
   var props = this.props
-  const { address } = props
+  const { address, useBlockie } = props
 
   if (!address) return
 
-  // eslint-disable-next-line react/no-find-dom-node
-  var container = findDOMNode(this)
-
-  var diameter = props.diameter || this.defaultDiameter
   if (!isNode) {
-    var img = iconFactory.iconForAddress(address, diameter)
+    // eslint-disable-next-line react/no-find-dom-node
-    container.appendChild(img)
+    var container = findDOMNode(this)
+
+    const diameter = props.diameter || this.defaultDiameter
+
+    if (useBlockie) {
+      _generateBlockie(container, address, diameter)
+    } else {
+      _generateJazzicon(container, address, diameter)
+    }
   }
 }
 
 IdenticonComponent.prototype.componentDidUpdate = function () {
   var props = this.props
-  const { address } = props
+  const { address, useBlockie } = props
 
   if (!address) return
 
-  // eslint-disable-next-line react/no-find-dom-node
-  var container = findDOMNode(this)
-
-  var children = container.children
-  for (var i = 0; i < children.length; i++) {
-    container.removeChild(children[i])
-  }
-
-  var diameter = props.diameter || this.defaultDiameter
   if (!isNode) {
-    var img = iconFactory.iconForAddress(address, diameter)
+    // eslint-disable-next-line react/no-find-dom-node
-    container.appendChild(img)
+    var container = findDOMNode(this)
+
+    var children = container.children
+    for (var i = 0; i < children.length; i++) {
+      container.removeChild(children[i])
+    }
+
+    const diameter = props.diameter || this.defaultDiameter
+
+    if (useBlockie) {
+      _generateBlockie(container, address, diameter)
+    } else {
+      _generateJazzicon(container, address, diameter)
+    }
   }
 }
 
+function _generateBlockie (container, address, diameter) {
+  const img = new Image()
+  img.src = toDataUrl(address)
+  const dia = !diameter || diameter < 50 ? 50 : diameter
+  img.height = dia * 1.25
+  img.width = dia * 1.25
+  container.appendChild(img)
+}
+
+function _generateJazzicon (container, address, diameter) {
+  const img = iconFactory.iconForAddress(address, diameter)
+  container.appendChild(img)
+}

ui/app/reducers/metamask.js

@@ -36,6 +36,7 @@ function reduceMetamask (state, action) {
       editingTransactionId: null,
     },
     coinOptions: {},
+    useBlockie: false,
   }, state.metamask)
 
   switch (action.type) {
@@ -314,6 +315,11 @@ function reduceMetamask (state, action) {
         coinOptions,
       })
 
+    case actions.SET_USE_BLOCKIE:
+          return extend(metamaskState, {
+            useBlockie: action.value,
+          })
+
     default:
       return metamaskState
 

ui/app/settings.js

@@ -8,6 +8,7 @@ const validUrl = require('valid-url')
 const { exportAsFile } = require('./util')
 const TabBar = require('./components/tab-bar')
 const SimpleDropdown = require('./components/dropdowns/simple-dropdown')
+const ToggleButton = require('react-toggle-button')
 
 const getInfuraCurrencyOptions = () => {
   const sortedCurrencies = infuraCurrencies.objects.sort((a, b) => {
@@ -51,6 +52,26 @@ class Settings extends Component {
     ])
   }
 
+  renderBlockieOptIn () {
+    const { metamask: { useBlockie }, setUseBlockie } = this.props
+
+    return h('div.settings__content-row', [
+      h('div.settings__content-item', [
+        h('span', 'Use Blockies Identicon'),
+      ]),
+      h('div.settings__content-item', [
+        h('div.settings__content-item-col', [
+          h(ToggleButton, {
+            value: useBlockie,
+            onToggle: (value) => setUseBlockie(!value),
+            activeLabel: '',
+            inactiveLabel: '',
+          }),
+        ]),
+      ]),
+    ])
+  }
+
   renderCurrentConversion () {
     const { metamask: { currentCurrency, conversionDate }, setCurrentCurrency } = this.props
 
@@ -214,6 +235,7 @@ class Settings extends Component {
     return (
       h('div.settings__content', [
         warning && h('div.settings__error', warning),
+        this.renderBlockieOptIn(),
         this.renderCurrentConversion(),
         // this.renderCurrentProvider(),
         this.renderNewRpcUrl(),
@@ -335,6 +357,7 @@ class Settings extends Component {
 Settings.propTypes = {
   tab: PropTypes.string,
   metamask: PropTypes.object,
+  setUseBlockie: PropTypes.func,
   setCurrentCurrency: PropTypes.func,
   setRpcTarget: PropTypes.func,
   displayWarning: PropTypes.func,
@@ -357,6 +380,7 @@ const mapDispatchToProps = dispatch => {
     setRpcTarget: newRpc => dispatch(actions.setRpcTarget(newRpc)),
     displayWarning: warning => dispatch(actions.displayWarning(warning)),
     revealSeedConfirmation: () => dispatch(actions.revealSeedConfirmation()),
+    setUseBlockie: value => dispatch(actions.setUseBlockie(value)),
   }
 }
 

ui/lib/blockies.js

@@ -0,0 +1,364 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+    typeof define === 'function' && define.amd ? define(['exports'], factory) :
+      (factory((global.blockies = {})));
+}(this, (function (exports) { 'use strict';
+
+  /**
+   * A handy class to calculate color values.
+   *
+   * @version 1.0
+   * @author Robert Eisele <robert@xarg.org>
+   * @copyright Copyright (c) 2010, Robert Eisele
+   * @link http://www.xarg.org/2010/03/generate-client-side-png-files-using-javascript/
+   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
+   *
+   */
+
+
+// helper functions for that ctx
+  function write(buffer, offs) {
+    for (var i = 2; i < arguments.length; i++) {
+      for (var j = 0; j < arguments[i].length; j++) {
+        buffer[offs++] = arguments[i].charAt(j);
+      }
+    }
+  }
+
+  function byte2(w) {
+    return String.fromCharCode((w >> 8) & 255, w & 255);
+  }
+
+  function byte4(w) {
+    return String.fromCharCode((w >> 24) & 255, (w >> 16) & 255, (w >> 8) & 255, w & 255);
+  }
+
+  function byte2lsb(w) {
+    return String.fromCharCode(w & 255, (w >> 8) & 255);
+  }
+
+  var PNG = function(width,height,depth) {
+
+    this.width   = width;
+    this.height  = height;
+    this.depth   = depth;
+
+    // pixel data and row filter identifier size
+    this.pix_size = height * (width + 1);
+
+    // deflate header, pix_size, block headers, adler32 checksum
+    this.data_size = 2 + this.pix_size + 5 * Math.floor((0xfffe + this.pix_size) / 0xffff) + 4;
+
+    // offsets and sizes of Png chunks
+    this.ihdr_offs = 0;									// IHDR offset and size
+    this.ihdr_size = 4 + 4 + 13 + 4;
+    this.plte_offs = this.ihdr_offs + this.ihdr_size;	// PLTE offset and size
+    this.plte_size = 4 + 4 + 3 * depth + 4;
+    this.trns_offs = this.plte_offs + this.plte_size;	// tRNS offset and size
+    this.trns_size = 4 + 4 + depth + 4;
+    this.idat_offs = this.trns_offs + this.trns_size;	// IDAT offset and size
+    this.idat_size = 4 + 4 + this.data_size + 4;
+    this.iend_offs = this.idat_offs + this.idat_size;	// IEND offset and size
+    this.iend_size = 4 + 4 + 4;
+    this.buffer_size  = this.iend_offs + this.iend_size;	// total PNG size
+
+    this.buffer  = new Array();
+    this.palette = new Object();
+    this.pindex  = 0;
+
+    var _crc32 = new Array();
+
+    // initialize buffer with zero bytes
+    for (var i = 0; i < this.buffer_size; i++) {
+      this.buffer[i] = "\x00";
+    }
+
+    // initialize non-zero elements
+    write(this.buffer, this.ihdr_offs, byte4(this.ihdr_size - 12), 'IHDR', byte4(width), byte4(height), "\x08\x03");
+    write(this.buffer, this.plte_offs, byte4(this.plte_size - 12), 'PLTE');
+    write(this.buffer, this.trns_offs, byte4(this.trns_size - 12), 'tRNS');
+    write(this.buffer, this.idat_offs, byte4(this.idat_size - 12), 'IDAT');
+    write(this.buffer, this.iend_offs, byte4(this.iend_size - 12), 'IEND');
+
+    // initialize deflate header
+    var header = ((8 + (7 << 4)) << 8) | (3 << 6);
+    header+= 31 - (header % 31);
+
+    write(this.buffer, this.idat_offs + 8, byte2(header));
+
+    // initialize deflate block headers
+    for (var i = 0; (i << 16) - 1 < this.pix_size; i++) {
+      var size, bits;
+      if (i + 0xffff < this.pix_size) {
+        size = 0xffff;
+        bits = "\x00";
+      } else {
+        size = this.pix_size - (i << 16) - i;
+        bits = "\x01";
+      }
+      write(this.buffer, this.idat_offs + 8 + 2 + (i << 16) + (i << 2), bits, byte2lsb(size), byte2lsb(~size));
+    }
+
+    /* Create crc32 lookup table */
+    for (var i = 0; i < 256; i++) {
+      var c = i;
+      for (var j = 0; j < 8; j++) {
+        if (c & 1) {
+          c = -306674912 ^ ((c >> 1) & 0x7fffffff);
+        } else {
+          c = (c >> 1) & 0x7fffffff;
+        }
+      }
+      _crc32[i] = c;
+    }
+
+    // compute the index into a png for a given pixel
+    this.index = function(x,y) {
+      var i = y * (this.width + 1) + x + 1;
+      var j = this.idat_offs + 8 + 2 + 5 * Math.floor((i / 0xffff) + 1) + i;
+      return j;
+    };
+
+    // convert a color and build up the palette
+    this.color = function(red, green, blue, alpha) {
+
+      alpha = alpha >= 0 ? alpha : 255;
+      var color = (((((alpha << 8) | red) << 8) | green) << 8) | blue;
+
+      if (typeof this.palette[color] == "undefined") {
+        if (this.pindex == this.depth) return "\x00";
+
+        var ndx = this.plte_offs + 8 + 3 * this.pindex;
+
+        this.buffer[ndx + 0] = String.fromCharCode(red);
+        this.buffer[ndx + 1] = String.fromCharCode(green);
+        this.buffer[ndx + 2] = String.fromCharCode(blue);
+        this.buffer[this.trns_offs+8+this.pindex] = String.fromCharCode(alpha);
+
+        this.palette[color] = String.fromCharCode(this.pindex++);
+      }
+      return this.palette[color];
+    };
+
+    // output a PNG string, Base64 encoded
+    this.getBase64 = function() {
+
+      var s = this.getDump();
+
+      var ch = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+      var c1, c2, c3, e1, e2, e3, e4;
+      var l = s.length;
+      var i = 0;
+      var r = "";
+
+      do {
+        c1 = s.charCodeAt(i);
+        e1 = c1 >> 2;
+        c2 = s.charCodeAt(i+1);
+        e2 = ((c1 & 3) << 4) | (c2 >> 4);
+        c3 = s.charCodeAt(i+2);
+        if (l < i+2) { e3 = 64; } else { e3 = ((c2 & 0xf) << 2) | (c3 >> 6); }
+        if (l < i+3) { e4 = 64; } else { e4 = c3 & 0x3f; }
+        r+= ch.charAt(e1) + ch.charAt(e2) + ch.charAt(e3) + ch.charAt(e4);
+      } while ((i+= 3) < l);
+      return r;
+    };
+
+    // output a PNG string
+    this.getDump = function() {
+
+      // compute adler32 of output pixels + row filter bytes
+      var BASE = 65521; /* largest prime smaller than 65536 */
+      var NMAX = 5552;  /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+      var s1 = 1;
+      var s2 = 0;
+      var n = NMAX;
+
+      for (var y = 0; y < this.height; y++) {
+        for (var x = -1; x < this.width; x++) {
+          s1+= this.buffer[this.index(x, y)].charCodeAt(0);
+          s2+= s1;
+          if ((n-= 1) == 0) {
+            s1%= BASE;
+            s2%= BASE;
+            n = NMAX;
+          }
+        }
+      }
+      s1%= BASE;
+      s2%= BASE;
+      write(this.buffer, this.idat_offs + this.idat_size - 8, byte4((s2 << 16) | s1));
+
+      // compute crc32 of the PNG chunks
+      function crc32(png, offs, size) {
+        var crc = -1;
+        for (var i = 4; i < size-4; i += 1) {
+          crc = _crc32[(crc ^ png[offs+i].charCodeAt(0)) & 0xff] ^ ((crc >> 8) & 0x00ffffff);
+        }
+        write(png, offs+size-4, byte4(crc ^ -1));
+      }
+
+      crc32(this.buffer, this.ihdr_offs, this.ihdr_size);
+      crc32(this.buffer, this.plte_offs, this.plte_size);
+      crc32(this.buffer, this.trns_offs, this.trns_size);
+      crc32(this.buffer, this.idat_offs, this.idat_size);
+      crc32(this.buffer, this.iend_offs, this.iend_size);
+
+      // convert PNG to string
+      return "\x89PNG\r\n\x1A\n"+this.buffer.join('');
+    };
+
+    this.fillRect = function (x, y, w, h, color) {
+      for(var i = 0; i < w; i++) {
+        for (var j = 0; j < h; j++) {
+          this.buffer[this.index(x+i, y+j)] = color;
+        }
+      }
+    };
+  };
+
+// https://stackoverflow.com/questions/2353211/hsl-to-rgb-color-conversion
+  /**
+   * Converts an HSL color value to RGB. Conversion formula
+   * adapted from http://en.wikipedia.org/wiki/HSL_color_space.
+   * Assumes h, s, and l are contained in the set [0, 1] and
+   * returns r, g, and b in the set [0, 255].
+   *
+   * @param   {number}  h       The hue
+   * @param   {number}  s       The saturation
+   * @param   {number}  l       The lightness
+   * @return  {Array}           The RGB representation
+   */
+
+  function hue2rgb(p, q, t) {
+    if(t < 0) t += 1;
+    if(t > 1) t -= 1;
+    if(t < 1/6) return p + (q - p) * 6 * t;
+    if(t < 1/2) return q;
+    if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+    return p;
+  }
+
+  function hsl2rgb(h, s, l){
+    var r, g, b;
+
+    if(s == 0){
+      r = g = b = l; // achromatic
+    }else{
+      var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+      var p = 2 * l - q;
+      r = hue2rgb(p, q, h + 1/3);
+      g = hue2rgb(p, q, h);
+      b = hue2rgb(p, q, h - 1/3);
+    }
+
+    return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255), 255];
+  }
+
+// The random number is a js implementation of the Xorshift PRNG
+  var randseed = new Array(4); // Xorshift: [x, y, z, w] 32 bit values
+
+  function seedrand(seed) {
+    for (var i = 0; i < randseed.length; i++) {
+      randseed[i] = 0;
+    }
+    for (var i = 0; i < seed.length; i++) {
+      randseed[i % 4] = (randseed[i % 4] << 5) - randseed[i % 4] + seed.charCodeAt(i);
+    }
+  }
+
+  function rand() {
+    // based on Java's String.hashCode(), expanded to 4 32bit values
+    var t = randseed[0] ^ (randseed[0] << 11);
+
+    randseed[0] = randseed[1];
+    randseed[1] = randseed[2];
+    randseed[2] = randseed[3];
+    randseed[3] = randseed[3] ^ (randseed[3] >> 19) ^ t ^ (t >> 8);
+
+    return (randseed[3] >>> 0) / (1 << 31 >>> 0);
+  }
+
+  function createColor() {
+    //saturation is the whole color spectrum
+    var h = Math.floor(rand() * 360);
+    //saturation goes from 40 to 100, it avoids greyish colors
+    var s = rand() * 60 + 40;
+    //lightness can be anything from 0 to 100, but probabilities are a bell curve around 50%
+    var l = (rand() + rand() + rand() + rand()) * 25;
+
+    return [h / 360,s / 100,l / 100];
+  }
+
+  function createImageData(size) {
+    var width = size; // Only support square icons for now
+    var height = size;
+
+    var dataWidth = Math.ceil(width / 2);
+    var mirrorWidth = width - dataWidth;
+
+    var data = [];
+    for (var y = 0; y < height; y++) {
+      var row = [];
+      for (var x = 0; x < dataWidth; x++) {
+        // this makes foreground and background color to have a 43% (1/2.3) probability
+        // spot color has 13% chance
+        row[x] = Math.floor(rand() * 2.3);
+      }
+      var r = row.slice(0, mirrorWidth);
+      r.reverse();
+      row = row.concat(r);
+
+      for (var i = 0; i < row.length; i++) {
+        data.push(row[i]);
+      }
+    }
+
+    return data;
+  }
+
+  function buildOpts(opts) {
+    if (!opts.seed) {
+      throw 'No seed provided'
+    }
+
+    seedrand(opts.seed);
+
+    return Object.assign({
+      size: 8,
+      scale: 16,
+      color: createColor(),
+      bgcolor: createColor(),
+      spotcolor: createColor(),
+    }, opts)
+  }
+
+  function toDataUrl(address) {
+    const opts = buildOpts({seed: address.toLowerCase()});
+
+    const imageData = createImageData(opts.size);
+    const width = Math.sqrt(imageData.length);
+
+    const p = new PNG(opts.size*opts.scale, opts.size*opts.scale, 3);
+    const bgcolor = p.color(...hsl2rgb(...opts.bgcolor));
+    const color = p.color(...hsl2rgb(...opts.color));
+    const spotcolor = p.color(...hsl2rgb(...opts.spotcolor));
+
+    for (var i = 0; i < imageData.length; i++) {
+      var row = Math.floor(i / width);
+      var col = i % width;
+      // if data is 0, leave the background
+      if (imageData[i]) {
+        // if data is 2, choose spot color, if 1 choose foreground
+        const pngColor = imageData[i] == 1 ? color : spotcolor;
+        p.fillRect(col * opts.scale, row * opts.scale, opts.scale, opts.scale, pngColor);
+      }
+    }
+    return `data:image/png;base64,${p.getBase64()}`;
+  }
+
+  exports.toDataUrl = toDataUrl;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));