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Merge pull request #303 from colkito/feature/qr-scanner-support 

Feature/qr scanner support
This commit is contained in:
Manuel Aráoz 2014-05-07 12:21:47 -03:00
parent 85eeec0ef7 d2708a353d
commit 47180238e3
5 changed files with 444 additions and 10 deletions
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5
bower.json
View File

@ -15,7 +15,8 @@
"mocha": "~1.18.2",
"chai": "~1.9.1",
"crypto-js": "http://crypto-js.googlecode.com/files/CryptoJS%20v3.1.2.zip",
"sjcl":"1.0.0",
"file-saver": "*"
"sjcl": "1.0.0",
"file-saver": "*",
"qrcode-decoder-js": "*"
}
}

6
css/main.css
View File

@ -25,6 +25,7 @@ html, body {height: 100%;}
padding: 5px 2rem;
bottom: 0;
width: 100%;
z-index: 100;
}
.bottom-copay {
@ -427,3 +428,8 @@ a.loading {
background: #fff;
}
#qr-canvas { display: none; }
#qrcode-scanner-video {
display: block;
margin: 0 auto;
}

43
index.html
View File

@ -462,13 +462,40 @@
<form name="sendForm" ng-submit="submitForm(sendForm)" novalidate>
<div class="row">
<div class="large-12 columns">
<label for="address">To address
<small ng-hide="!sendForm.address.$pristine">required</small>
<small class="is-valid" ng-show="!sendForm.address.$invalid && !sendForm.address.$pristine">valid!</small>
<small class="has-error" ng-show="sendForm.address.$invalid && !sendForm.address.$pristine">
not valid</small>
</label>
<input type="text" id="address" name="address" placeholder="Send to" ng-model="address" valid-address required>
<div class="row collapse">
<label for="address">To address
<small ng-hide="!sendForm.address.$pristine || address">required</small>
<small class="is-valid" ng-show="!sendForm.address.$invalid && address">valid!</small>
<small class="has-error" ng-show="sendForm.address.$invalid && address">
not valid</small>
</label>
<div class="small-10 columns">
<input type="text" id="address" name="address" placeholder="Send to" ng-model="address" valid-address required>
</div>
<div class="small-2 columns" ng-hide="showScanner">
<a class="postfix button" ng-click="openScanner()"><i class="fi-camera"></i></a>
</div>
<div class="small-2 columns" ng-show="showScanner">
<a class="postfix button alert" ng-click="cancelScanner()">Cancel</a>
</div>
</div>
<div id="scanner" class="row" ng-if="showScanner">
<div class="text-centered">
<canvas id="qr-canvas" width="200" height="150"></canvas>
<div ng-show="isMobile">
<div id="file-input-wrapper" class="btn btn-primary">
<span class="pull-left text-centered">
<i class="glyphicon glyphicon-refresh icon-rotate"></i>
Get QR code
</span>
<input id="qrcode-camera" type="file" capture="camera" accept="image/*">
</div>
</div>
<div ng-hide="isMobile">
<video id="qrcode-scanner-video" width="300" height="225" ng-hide="isMobile"></video>
</div>
</div>
</div>
</div>
</div>
@ -556,6 +583,8 @@
<script src="lib/file-saver/FileSaver.js"></script>
<script src="lib/socket.io.js"></script>
<script src="lib/sjcl.js"></script>
<script src="lib/ios-imagefile-megapixel/megapix-image.js"></script>
<script src="lib/qrcode-decoder-js/lib/qrcode-decoder.min.js"></script>
<script src="js/copayBundle.js"></script>
<script src="js/app.js"></script>

147
js/controllers/send.js
View File

@ -1,10 +1,42 @@
'use strict';
angular.module('copay.send').controller('SendController',
function($scope, $rootScope, $location) {
function($scope, $rootScope, $window, $location, $timeout) {
$scope.title = 'Send';
$scope.loading = false;
// Detect mobile devices
var isMobile = {
Android: function() {
return navigator.userAgent.match(/Android/i);
},
BlackBerry: function() {
return navigator.userAgent.match(/BlackBerry/i);
},
iOS: function() {
return navigator.userAgent.match(/iPhone|iPad|iPod/i);
},
Opera: function() {
return navigator.userAgent.match(/Opera Mini/i);
},
Windows: function() {
return navigator.userAgent.match(/IEMobile/i);
},
any: function() {
return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Opera() || isMobile.Windows());
}
};
// Detect protocol
$scope.isHttp = function() {
var protocol = $window.location.protocol;
return (protocol.indexOf('http') === 0);
};
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
window.URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
$scope.isMobile = isMobile.any();
$scope.unitIds = ['BTC','mBTC'];
$scope.selectedUnit = $scope.unitIds[0];
@ -32,6 +64,119 @@ angular.module('copay.send').controller('SendController',
$scope.amount = null;
form.address.$pristine = true;
form.amount.$pristine = true;
};
// QR code Scanner
var cameraInput;
var video;
var canvas;
var $video;
var context;
var localMediaStream;
var _scan = function(evt) {
if ($scope.isMobile) {
$scope.scannerLoading = true;
var files = evt.target.files;
if (files.length === 1 && files[0].type.indexOf('image/') === 0) {
var file = files[0];
var reader = new FileReader();
reader.onload = (function(theFile) {
return function(e) {
var mpImg = new MegaPixImage(file);
mpImg.render(canvas, { maxWidth: 200, maxHeight: 200, orientation: 6 });
$timeout(function() {
qrcode.width = canvas.width;
qrcode.height = canvas.height;
qrcode.imagedata = context.getImageData(0, 0, qrcode.width, qrcode.height);
try {
//alert(JSON.stringify(qrcode.process(context)));
qrcode.decode();
} catch (e) {
alert(e);
}
}, 1500);
};
})(file);
// Read in the file as a data URL
reader.readAsDataURL(file);
}
} else {
if (localMediaStream) {
context.drawImage(video, 0, 0, 300, 225);
try {
qrcode.decode();
} catch(e) {
//qrcodeError(e);
}
}
$timeout(_scan, 500);
}
};
var _successCallback = function(stream) {
video.src = (window.URL && window.URL.createObjectURL(stream)) || stream;
localMediaStream = stream;
video.play();
$timeout(_scan, 1000);
};
var _scanStop = function() {
$scope.scannerLoading = false;
$scope.showScanner = false;
if (!$scope.isMobile) {
if (localMediaStream && localMediaStream.stop) localMediaStream.stop();
localMediaStream = null;
video.src = '';
}
};
var _videoError = function(err) {
console.log('Video Error: ' + JSON.stringify(err));
_scanStop();
};
qrcode.callback = function(data) {
_scanStop();
var str = (data.indexOf('bitcoin:') === 0) ? data.substring(8) : data;
console.log('QR code detected: ' + str);
$scope.$apply(function() {
$scope.address = str;
});
};
$scope.cancelScanner = function() {
_scanStop();
};
$scope.openScanner = function() {
$scope.showScanner = true;
// Wait a moment until the canvas shows
$timeout(function() {
canvas = document.getElementById('qr-canvas');
context = canvas.getContext('2d');
if ($scope.isMobile) {
cameraInput = document.getElementById('qrcode-camera');
cameraInput.addEventListener('change', _scan, false);
} else {
video = document.getElementById('qrcode-scanner-video');
$video = angular.element(video);
canvas.width = 300;
canvas.height = 225;
context.clearRect(0, 0, 300, 225);
navigator.getUserMedia({video: true}, _successCallback, _videoError);
}
}, 500);
};
});

253
lib/ios-imagefile-megapixel/megapix-image.js Normal file
View File

@ -0,0 +1,253 @@
/**
* Mega pixel image rendering library for iOS6 Safari
*
* Fixes iOS6 Safari's image file rendering issue for large size image (over mega-pixel),
* which causes unexpected subsampling when drawing it in canvas.
* By using this library, you can safely render the image with proper stretching.
*
* Copyright (c) 2012 Shinichi Tomita <shinichi.tomita@gmail.com>
* Released under the MIT license
*/
(function() {
/**
* Detect subsampling in loaded image.
* In iOS, larger images than 2M pixels may be subsampled in rendering.
*/
function detectSubsampling(img) {
var iw = img.naturalWidth, ih = img.naturalHeight;
if (iw * ih > 1024 * 1024) { // subsampling may happen over megapixel image
var canvas = document.createElement('canvas');
canvas.width = canvas.height = 1;
var ctx = canvas.getContext('2d');
ctx.drawImage(img, -iw + 1, 0);
// subsampled image becomes half smaller in rendering size.
// check alpha channel value to confirm image is covering edge pixel or not.
// if alpha value is 0 image is not covering, hence subsampled.
return ctx.getImageData(0, 0, 1, 1).data[3] === 0;
} else {
return false;
}
}
/**
* Detecting vertical squash in loaded image.
* Fixes a bug which squash image vertically while drawing into canvas for some images.
*/
function detectVerticalSquash(img, iw, ih) {
var canvas = document.createElement('canvas');
canvas.width = 1;
canvas.height = ih;
var ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
var data = ctx.getImageData(0, 0, 1, ih).data;
// search image edge pixel position in case it is squashed vertically.
var sy = 0;
var ey = ih;
var py = ih;
while (py > sy) {
var alpha = data[(py - 1) * 4 + 3];
if (alpha === 0) {
ey = py;
} else {
sy = py;
}
py = (ey + sy) >> 1;
}
var ratio = (py / ih);
return (ratio===0)?1:ratio;
}
/**
* Rendering image element (with resizing) and get its data URL
*/
function renderImageToDataURL(img, options, doSquash) {
var canvas = document.createElement('canvas');
renderImageToCanvas(img, canvas, options, doSquash);
return canvas.toDataURL("image/jpeg", options.quality || 0.8);
}
/**
* Rendering image element (with resizing) into the canvas element
*/
function renderImageToCanvas(img, canvas, options, doSquash) {
var iw = img.naturalWidth, ih = img.naturalHeight;
var width = options.width, height = options.height;
var ctx = canvas.getContext('2d');
ctx.save();
transformCoordinate(canvas, ctx, width, height, options.orientation);
var subsampled = detectSubsampling(img);
if (subsampled) {
iw /= 2;
ih /= 2;
}
var d = 1024; // size of tiling canvas
var tmpCanvas = document.createElement('canvas');
tmpCanvas.width = tmpCanvas.height = d;
var tmpCtx = tmpCanvas.getContext('2d');
var vertSquashRatio = doSquash ? detectVerticalSquash(img, iw, ih) : 1;
var dw = Math.ceil(d * width / iw);
var dh = Math.ceil(d * height / ih / vertSquashRatio);
var sy = 0;
var dy = 0;
while (sy < ih) {
var sx = 0;
var dx = 0;
while (sx < iw) {
tmpCtx.clearRect(0, 0, d, d);
tmpCtx.drawImage(img, -sx, -sy);
ctx.drawImage(tmpCanvas, 0, 0, d, d, dx, dy, dw, dh);
sx += d;
dx += dw;
}
sy += d;
dy += dh;
}
ctx.restore();
tmpCanvas = tmpCtx = null;
}
/**
* Transform canvas coordination according to specified frame size and orientation
* Orientation value is from EXIF tag
*/
function transformCoordinate(canvas, ctx, width, height, orientation) {
switch (orientation) {
case 5:
case 6:
case 7:
case 8:
canvas.width = height;
canvas.height = width;
break;
default:
canvas.width = width;
canvas.height = height;
}
switch (orientation) {
case 2:
// horizontal flip
ctx.translate(width, 0);
ctx.scale(-1, 1);
break;
case 3:
// 180 rotate left
ctx.translate(width, height);
ctx.rotate(Math.PI);
break;
case 4:
// vertical flip
ctx.translate(0, height);
ctx.scale(1, -1);
break;
case 5:
// vertical flip + 90 rotate right
ctx.rotate(0.5 * Math.PI);
ctx.scale(1, -1);
break;
case 6:
// 90 rotate right
ctx.rotate(0.5 * Math.PI);
ctx.translate(0, -height);
break;
case 7:
// horizontal flip + 90 rotate right
ctx.rotate(0.5 * Math.PI);
ctx.translate(width, -height);
ctx.scale(-1, 1);
break;
case 8:
// 90 rotate left
ctx.rotate(-0.5 * Math.PI);
ctx.translate(-width, 0);
break;
default:
break;
}
}
/**
* MegaPixImage class
*/
function MegaPixImage(srcImage) {
if (window.Blob && srcImage instanceof Blob) {
var img = new Image();
var URL = window.URL && window.URL.createObjectURL ? window.URL :
window.webkitURL && window.webkitURL.createObjectURL ? window.webkitURL :
null;
if (!URL) { throw Error("No createObjectURL function found to create blob url"); }
img.src = URL.createObjectURL(srcImage);
this.blob = srcImage;
srcImage = img;
}
if (!srcImage.naturalWidth && !srcImage.naturalHeight) {
var _this = this;
srcImage.onload = function() {
var listeners = _this.imageLoadListeners;
if (listeners) {
_this.imageLoadListeners = null;
for (var i=0, len=listeners.length; i<len; i++) {
listeners[i]();
}
}
};
this.imageLoadListeners = [];
}
this.srcImage = srcImage;
}
/**
* Rendering megapix image into specified target element
*/
MegaPixImage.prototype.render = function(target, options) {
if (this.imageLoadListeners) {
var _this = this;
this.imageLoadListeners.push(function() { _this.render(target, options) });
return;
}
options = options || {};
var imgWidth = this.srcImage.naturalWidth, imgHeight = this.srcImage.naturalHeight,
width = options.width, height = options.height,
maxWidth = options.maxWidth, maxHeight = options.maxHeight,
doSquash = !this.blob || this.blob.type === 'image/jpeg';
if (width && !height) {
height = (imgHeight * width / imgWidth) << 0;
} else if (height && !width) {
width = (imgWidth * height / imgHeight) << 0;
} else {
width = imgWidth;
height = imgHeight;
}
if (maxWidth && width > maxWidth) {
width = maxWidth;
height = (imgHeight * width / imgWidth) << 0;
}
if (maxHeight && height > maxHeight) {
height = maxHeight;
width = (imgWidth * height / imgHeight) << 0;
}
var opt = { width : width, height : height };
for (var k in options) opt[k] = options[k];
var tagName = target.tagName.toLowerCase();
if (tagName === 'img') {
target.src = renderImageToDataURL(this.srcImage, opt, doSquash);
} else if (tagName === 'canvas') {
renderImageToCanvas(this.srcImage, target, opt, doSquash);
}
if (typeof this.onrender === 'function') {
this.onrender(target);
}
};
/**
* Export class to global
*/
if (typeof define === 'function' && define.amd) {
define([], function() { return MegaPixImage; }); // for AMD loader
} else {
this.MegaPixImage = MegaPixImage;
}
})();