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Capture Image using WebRTC in Lightning Component
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<aura:component controller="ImageController" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" > | |
<lightning:card title="Capture Screen"> | |
<lightning:layout horizontalAlign="spread"> | |
<lightning:layoutItem padding="around-small"> | |
<h1> | |
MDN - WebRTC: Still photo capture demo | |
</h1> | |
<div class="camera"> | |
<video id="video">Video stream not available.</video> | |
<button id="startbutton" onclick="{!c.doInit}">Take photo</button> | |
<button id="clearbutton" onclick="{!c.doInit}">Clear Photo</button> | |
</div> | |
</lightning:layoutItem> | |
<lightning:layoutItem padding="around-small"> | |
<canvas id="canvas"> | |
</canvas> | |
</lightning:layoutItem> | |
<lightning:layoutItem padding="around-small"> | |
<h1> | |
Captures Image | |
</h1> | |
<div class="output"> | |
<img id="photo" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt="The screen capture will appear in this box."/> | |
<button id="saveButton" onclick="{!c.savePhoto}">Save photo to record</button> | |
</div> | |
</lightning:layoutItem> | |
</lightning:layout> | |
</lightning:card> | |
</aura:component> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<AuraDefinitionBundle xmlns="urn:metadata.tooling.soap.sforce.com" fqn="accessWebCam"> | |
<apiVersion>39.0</apiVersion> | |
<description>Capture Image Using Laptop Webcam</description> | |
</AuraDefinitionBundle> |
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.THIS #video { | |
border: 1px solid black; | |
box-shadow: 2px 2px 3px black; | |
width:320px; | |
height:240px; | |
} | |
.THIS #photo { | |
border: 1px solid black; | |
box-shadow: 2px 2px 3px black; | |
width:320px; | |
height:240px; | |
} | |
.THIS #canvas { | |
display:none; | |
} | |
.THIS .camera { | |
width: 340px; | |
display:inline-block; | |
} | |
.THIS .output { | |
width: 340px; | |
display:inline-block; | |
} | |
.THIS #startbutton { | |
display:inline-block; | |
position:relative; | |
margin-left:60px; | |
margin-right:auto; | |
bottom:22px; | |
background-color: rgba(0, 150, 0, 0.5); | |
border: 1px solid rgba(255, 255, 255, 0.7); | |
box-shadow: 0px 0px 1px 2px rgba(0, 0, 0, 0.2); | |
font-size: 12px; | |
font-family: "Lucida Grande", "Arial", sans-serif; | |
color: rgba(255, 255, 255, 1.0); | |
} | |
.THIS .contentarea { | |
font-size: 16px; | |
font-family: "Lucida Grande", "Arial", sans-serif; | |
width: 760px; | |
} | |
.THIS #clearbutton { | |
display:inline-block; | |
position:relative; | |
margin-left:70px; | |
margin-right:auto; | |
bottom:22px; | |
background-color: red; | |
border: 1px solid rgba(155, 155, 255, 20); | |
box-shadow: 0px 0px 1px 2px rgba(0, 0, 0, 0.2); | |
font-size: 12px; | |
font-family: "Lucida Grande", "Arial", sans-serif; | |
color: rgba(255, 255, 255, 1.0); | |
} |
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({ | |
doInit : function(component, event, helper) { | |
var width = 400; // scale the photo width to this | |
var height = 0; // computed based on the input stream | |
var streaming = false; | |
var video = null; | |
var canvas = null; | |
var photo = null; | |
var startbutton = null; | |
video = document.getElementById('video'); | |
canvas = document.getElementById('canvas'); | |
photo = document.getElementById('photo'); | |
startbutton = document.getElementById('startbutton'); | |
var clearbutton = document.getElementById('clearbutton'); | |
navigator.mediaDevices.getUserMedia({video: true, audio: false}) | |
.then(function(stream) { | |
video.srcObject = stream; | |
video.play(); | |
}) | |
.catch(function(err) { | |
console.log("An error occurred: " + err); | |
}); | |
video.addEventListener('canplay', function(ev){ | |
if (!streaming) { | |
height = video.videoHeight / (video.videoWidth/width); | |
// Firefox currently has a bug where the height can't be read from | |
// the video, so make assumptions if this happens. | |
if (isNaN(height)) { | |
height = width / (4/3); | |
} | |
video.setAttribute('width', width); | |
video.setAttribute('height', height); | |
canvas.setAttribute('width', width); | |
canvas.setAttribute('height', height); | |
streaming = true; | |
} | |
}, false); | |
startbutton.addEventListener('click', function(ev){ | |
takepicture(); | |
}, false); | |
clearbutton.addEventListener('click', function(ev){ | |
clearphoto(); | |
}, false); | |
clearphoto(); | |
function clearphoto() { | |
var context = canvas.getContext('2d'); | |
context.fillStyle = "#AAA"; | |
context.fillRect(0, 0, canvas.width, canvas.height); | |
var data = canvas.toDataURL('image/png'); | |
photo.setAttribute('src', data); | |
} | |
function takepicture() { | |
var context = canvas.getContext('2d'); | |
if (width && height) { | |
canvas.width = width; | |
canvas.height = height; | |
context.drawImage(video, 0, 0, width, height); | |
var data = canvas.toDataURL('image/png'); | |
photo.setAttribute('src', data); | |
} else { | |
clearphoto(); | |
} | |
} | |
}, | |
savePhoto: function(component, event, helper) { | |
var image = document.getElementById("photo"); | |
var action = component.get('c.saveImageFile'); | |
action.setParams({ | |
"imageUrl" : photo.getAttribute('src'), | |
"recordId" : component.get('v.recordId') | |
}); | |
action.setCallback(this, function(a){ | |
var state = a.getState(); // get the response state | |
if(state == 'SUCCESS') { | |
component.set('v.sObjList', a.getReturnValue()); | |
} | |
}); | |
$A.enqueueAction(action); | |
} | |
}) |
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Sir, do we save hat image in the org?