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updated syntax from polymer0.x to 1.0 #3

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updated syntax from polymer0.x to 1.0 #3

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256 changes: 138 additions & 118 deletions src/qr-reader.html
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Original file line number Diff line number Diff line change
@@ -1,141 +1,161 @@
<polymer-element name="qr-reader"
attributes="output outputAttr interval onRead">

<dom-module id="qr-reader">
<template>
<style>
</style>
<video id="video" autoplay width="320" height="240">Put your fallback message here.</video>
<canvas id="canvas" width="320" height="240" style="display: none;"></canvas>
<div id="output"></div>
<content></content>
</template>

<script>
(function () {
var interval_id,
<script>
(function() {
var interval_id,
stream_obj,
onRead;
Polymer({
is: 'qr-reader',
properties: {
output: {
type: String
},
outputAttr: {
type: String,
value: 'textContent'
},
interval: {
type: String,
value: 1000
},
onread: String,
scale: {
type: Number,
value: 0.5
},
track: {
type: String,
notify: true,
reflectToAttribute: true
}
},

Polymer('qr-reader', {

outputAttr: 'textContent',

interval: 1000,

scale: 0.5,

onRead: '',

ready: function () {
var me = this,
ready: function() {
var me = this,
media_options,
success,
error;

qrcode.callback = function (value) {
onRead(me, value);
};

navigator.getUserMedia =
navigator.getUserMedia ||
navigator.webkitGetUserMedia ||
navigator.mozGetUserMedia ||
navigator.msGetUserMedia;

if (navigator.getUserMedia) {
media_options = {
"audio": false,
"video": true
qrcode.callback = function(value) {
onRead(me, value);
};

success = function (stream) {
me.$.video.src = (window.URL && window.URL.createObjectURL(stream)) || stream;
stream_obj = stream;
me.startScan();
};

error = function (error) {
if (error && error.message) {
console.log(error.message);
}
};

navigator.getUserMedia(media_options, success, error);
}
else {
this.$.output.innerHTML = 'Sorry, native web camera streaming is not supported by this browser...';
}
},

startScan: function () {
var me = this;

if (interval_id) {
me.stop();
}
interval_id = setInterval(function (video, scale) {
me.capture()
}, this.interval);
},

stopScan: function () {
clearInterval(interval_id);
},

capture: function () {
var w = this.$.video.videoWidth * this.scale,
navigator.getUserMedia =
navigator.getUserMedia ||
navigator.webkitGetUserMedia ||
navigator.mozGetUserMedia ||
navigator.msGetUserMedia;
if (navigator.getUserMedia) {
var getBackCamera = new Promise(function(resolve, reject) {
navigator.mediaDevices.enumerateDevices()
.then(function(devices) {
devices = devices.filter(function(d) {
return d.kind === 'videoinput';
});
var back = devices.find(function(d) {
return d.label.toLowerCase().indexOf('back') !== -1;
}) || (devices.length && devices[devices.length - 1]);
if (back) {
me.track = back.deviceId;
resolve(back.deviceId);
}
});
});
getBackCamera.then(function(id) {
backCameraId = id;
media_options = {
audio: false,
video: {
deviceId: {
exact: backCameraId
}
}
};

success = function(stream) {
me.$.video.src = (window.URL && window.URL.createObjectURL(stream)) || stream;
stream_obj = stream;
me.startScan();
};
error = function(error) {
if (error) {
console.log(error);
}
};
navigator.mediaDevices.getUserMedia(media_options).then(success).catch(error);
})
} else {
this.$.output.innerHTML = 'Sorry, native web camera streaming is not supported by this browser...';
}
},
startScan: function() {
var me = this;
if (interval_id) {
me.stop();
}
interval_id = setInterval(function(video, scale) {
me.capture()
}, this.interval);
},
stopScan: function() {
clearInterval(interval_id);
},
capture: function() {
var w = this.$.video.videoWidth * this.scale,
h = this.$.video.videoHeight * this.scale,
canvas = this.$.canvas.getContext('2d');

canvas.drawImage(this.$.video.impl, 0, 0, w, h);
try {
qrcode.decode();
}
catch (err) {
// console.log(err);
}
},

stop: function () {
this.stopScan();
if (stream_obj) {
if ('stop' in stream_obj) {
stream_obj.stop();
canvas.drawImage(this.$.video, 0, 0, w, h);
try {
qrcode.decodeCanvas(this.$.canvas);
} catch (err) {
this.$.output.innerHTML = err;
// console.log(err);
}
else {
this.$.video.pause();
this.$.video.src = null;
},
stop: function() {
this.stopScan();
if (stream_obj) {
var track = stream_obj.getTracks()[0];
track.stop();
if ('stop' in stream_obj) {
stream_obj.stop();
} else {
this.$.video.pause();
this.$.video.src = null;
}
}
}
}

});

onRead = function (el, value) {
var output,
});
//
onRead = function(el, value) {
var output,
attrs,
obj = window,
i;

if (el.output !== null) {
output = el.output ? document.querySelector(el.output) : el.$.output;
output[el.outputAttr] = value;
}
if (el.onRead) {
attrs = el.onRead.split('.');
for (i=0; i<attrs.length; i++) {
obj = obj[attrs[i]];
if (el.output !== null) {
output = el.output ? document.querySelector(el.output) : el.$.output;
output[el.outputAttr] = value;
}
obj(value);
}
el.asyncFire('polymer-signal', {
name: 'qr-read',
data: {
value: value
if (el.onread) {
attrs = el.onread.split('.');
for (i = 0; i < attrs.length; i++) {
obj = obj[attrs[i]];
}
obj(value);
}
});
};

})();

</script>

</polymer-element>
el.fire('polymer-signal', {
name: 'qr-read',
data: {
value: value
}
});
};
})();
</script>
</dom-module>