protonphoton/snap2laz
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[enh] Adds picture upload + code cleanup (a bit)

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This commit is contained in:
alban 2020-11-05 16:50:49 +01:00
parent d0288d3cc9
commit 60b9129e7c
2 changed files with 203 additions and 155 deletions
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87
index.html
View File

@ -13,19 +13,7 @@
#canvas { display: block; }
span.ui-slider-handle.ui-corner-all.ui-state-default { background: dodgerblue;}
canvas#simuCanvas {background: #333;}
div.select {
display: inline-block;
margin: 0 0 1em 0;
}
p.small {
font-size: 0.7em;
}
label {
width: 12em;
display: inline-block;
}
.row {margin: 24px 0;}
</style>
<link rel="stylesheet" type="text/css" href="css/bootstrap/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="js/jquery-ui/jquery-ui.css" />
@ -37,30 +25,38 @@
<div class="container-fluid container-md">
<div class="row">
<div class="col-sm col-6">
<div class="col-sm-7">
<video id="video" class="video_sized" autoplay></video>
</div>
<div class="col-sm">
<div class="col-sm-5">
<h1 class="text-primary">Convert your photos to laser images!</h1>
<p class="lead">Once you allow the browser to use your camera, you can start creating something new by taking a snapshot. </p>
<p class="lead">Create something fresh by allowing the browser to use your camera.</p>
<p class="lead">Or pick an image from your phone and upload it. </p>
<p class="lead">If you're happy with the result, send it to see it converted to a laser-ready image! </p>
<div class="select">
<label for="videoSource">Change camera </label><select id="videoSource" class="custom-select"></select>
</div>
<button class="snap btn btn-lg btn-primary">Take a snap</button>
<div class="row">
<div class="col-6">
<button class="snap btn btn-block btn-lg btn-primary">Take a snap</button>
</div>
<div class="col-6">
<button id="uploadBtn" class=" btn btn-block btn-lg btn-primary">Upload a file</button>
<input id="uploadInput" type="file" multiple style="display: none"/>
</div>
</div>
</div>
</div>
<div class="row" id="result">
<div class="col-sm col-6">
<div class="video_sized">
<canvas id="canvas" class="video_sized"></canvas>
</div>
<div class="row result" id="result" style="display:none">
<div class="col-sm-7">
<div class="video_sized">
<canvas id="canvas" class="video_sized"></canvas>
</div>
</div>
<div class="col-sm">
<h1 class="text-primary">Are you satisfied with the contrast? </h3>
<p>Before sending your snap, change the contrast using the slider to reach the effect you desire.</p><br/>
<h2 class="text-primary">Not satisfied with contrast? </h2>
<p class="lead">Before sending your snap, feel free to modify the contrast by using the slider to reach the effect you desire.</p>
<div id="slider"></div>
<br/>
<div class="float-left">
<button type="button" class="btn btn-secondary contrast" rel="-5">
<span class="badge badge-light">+</span> white
@ -70,27 +66,42 @@
<button type="button" class="btn btn-secondary contrast" rel="5">
<span class="badge badge-light">+</span> black
</button>
</div><br>
<br/>
<h3>Ready to send? </h3>
</div>
<div class="float-left">
<br />
<h2 class="text-primary">Not satisfied with frame?</h2>
<p class="lead">Before sending your snap, use the blue handles that appear over it to cut the edges. You can also zoom in.</p>
</div>
</div>
</div>
<div class="row result" style="display:none">
<div class="col-sm-7">
<h1 class="text-primary"> Got text?</h1>
<p >If some text is visible on the image, type it before pushing the Send button.</p>
<div class="form-group">
<input id="text" type="text" class="form-control form-control-lg" placeholder="Type text here"/>
</div>
</div>
<div class="col-sm-5">
<h1 class="text-success">Ready to send? </h1>
<div class="form-group">
<button id="send" class="form-control form-control-lg btn btn-lg btn-success btn-block">Send</button>
</div>
</div>
</div>
<div class="row result" style="display:none">
<div class="col-sm">
<div id="messages">
</div>
</div>
</div>
<div class="row" id="preview">
<div class="col-sm col-6">
<div class="col-sm-7">
<canvas id="simuCanvas" class="video_sized"></canvas>
</div>
<div class="col-sm" >
<h1 class="text-primary">Preview your creation</h1>
<p>Now that your creation have been sent, you can check what they will look like on lasers using these links, sorted by oldest snaps last.</p>
<div class="col-sm-5" >
<h2 class="text-secondary">Preview your creations</h2>
<p class="lead">Now that your creation have been sent, you can check what they will look like on lasers using these links, sorted by oldest snaps last.</p>
<div id="imageList"></div>
</div>
@ -98,14 +109,12 @@
</div>
</main>
<script src="js/jquery-3.5.1.min.js"></script>
<script src="js/cropper/cropper.min.js"></script>
<script src="js/jquery-ui/jquery-ui.js"></script>
<script src="js/canvas.js"></script>
<script src="js/adapter-latest.js"></script>
<script src="js/camera.js" async></script>
<script src="js/main.js"></script>
<script src="js/adapter-latest.js"></script>
<script src="js/camera.js" async></script>
</body>
</html>

271
js/canvas.js → js/main.js
View File

@ -1,10 +1,7 @@
$(document).ready(function(){
var binary_level = 100
var url = document.location.origin
var cropper = null
var snap = null
Cropper.setDefaults({
viewMode: 1,
@ -12,66 +9,81 @@ $(document).ready(function(){
})
// Grab elements, create settings, etc.
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var video = document.getElementById('video');
var mediaConfig = { video: true };
var snapCanvas = document.getElementById('canvas');
var snapContext = snapCanvas.getContext('2d');
var simuCanvas = document.getElementById("simuCanvas");
var simuContext = simuCanvas.getContext("2d");
var simuLastPoint = { x: 0, y: 0, color: 0};
var simuZoom = 1;
var binary_level = 100
var url = document.location.origin
var cropper = null
var snap = null
/*
Helpers
*/
var errBack = function(e) {
console.log('An error has occurred!', e)
};
var Point = function( l ){
return {
"x" : l[0],
"y" : l[1],
"color" : l[2]
}
}
/**
Take a new snapshot from the camera and store it
**/
function doSnap(){
function videoToSnap(){
showSnap(video, video.width, video.height)
}
function showSnap(src, width, height){
cropper && cropper.destroy()
let width = video.width
let height = video.height
context.drawImage(video, 0, 0, width, height);
snap = context.createImageData(width, height);
snap.data.set( context.getImageData(0, 0, width, height).data )
binary(context)
$("#result").show()
snapContext.drawImage(src, 0, 0, width, height);
snap = snapContext.createImageData(width, height);
snap.data.set( snapContext.getImageData(0, 0, width, height).data )
binary(snapContext)
$(".result").show()
cropper = new Cropper(snapCanvas);
// Animation removed: it was causing problems with the send button. Fix.
//$('html, body').animate({scrollTop: $("#result").offset().top}, 2000);
cropper = new Cropper(canvas);
}
function doContrast(){
let cropperData = {}
if( cropper ){
cropperData = cropper.getData()
cropper.destroy()
cropperData = cropper.getData()
cropper.destroy()
}
context.putImageData(snap,0,0)
binary(context)
cropper = new Cropper(canvas);
snapContext.putImageData(snap,0,0)
binary(snapContext)
cropper = new Cropper(snapCanvas);
setTimeout( () => { cropper.setData(cropperData) ; },30)
}
// Trigger photo take
$('.snap').on('click', function() {
doSnap()
});
/*
To convert image into binary , we will threshold it.
Based upon the threshold value
thresh_red, thresh_blue, thresh_green ==> are the respective red, blue and green color threshold values. Any thing above this threshold value will be denoted by white color and anything below will be black
*/
function binary(context){
/*
To convert image into binary , we will threshold it.
Based upon the threshold value
thresh_red, thresh_blue, thresh_green ==> are the respective red, blue and green color threshold values. Any thing above this threshold value will be denoted by white color and anything below will be black
*/
var image = context.getImageData(0, 0, context.canvas.width, context.canvas.height);
var thresh_red = binary_level;
var thresh_green = binary_level;
var thresh_blue = binary_level;
var channels = image.data.length/4;
for(var i=0;i<channels;i++){
var r = image.data[i*4 + 0];
var g = image.data[i*4 + 1];
var b = image.data[i*4 + 2];
if( r>= thresh_red && g>= thresh_green && b>=thresh_blue ){
if( r>= binary_level ){
image.data[i*4 + 0] = 255;
image.data[i*4 + 1] = 255;
image.data[i*4 + 2] = 255;
@ -84,112 +96,74 @@ $(document).ready(function(){
context.putImageData(image, 0, 0);
}
$("#result").hide()
var slider = $( "#slider" ).slider({
range: false,
value: 100,
animate: 300,
min : 0,
max : 255,
change: function(event,ui){
binary_level = ui.value
console.log(`binary_level:${binary_level}`)
doContrast()
function processFiles(files) {
if(files && typeof FileReader !== "undefined") {
for(var i=0; i<files.length; i++) {
fileToSnap(files[i]);
}
});
$("#send").on("click",function(){
var cropCanvas = cropper.getCroppedCanvas();
image_data = cropCanvas.toDataURL();
$("#messages").html('<div class="alert alert-primary" role="alert">Sending...</div>')
$.ajax({
timeout: 3000,
url: url + "/image",
method:"POST",
dataType: "json",
data:{
image_data : image_data,
text : $("#text").val()
},
}).done(function(d,m,j){
if( d.errors ){
msg = d.errors.join(" / ")
$("#messages").html(`<div class="alert alert-danger" role="alert">Something went wrong: ${msg}</div>`)
return
}
$("#messages").html(`<div class="alert alert-success" role="alert">OK, your image will be available in a few seconds as <a href="#${d.hash_name}" class="hash_name btn btn-sm btn-secondary">${d.hash_name}</a></div>`)
imageList = localStorage.getItem("imageList") ? JSON.parse(localStorage.getItem("imageList")) : []
imageList.push(d.hash_name)
localStorage.setItem("imageList",JSON.stringify(imageList))
refreshImageList()
})
.fail(function(d,m,jq){
$("#messages").html(`<div class="alert alert-danger" role="alert">Ooops... Something went wrong: ${jq}</div>`)
})
})
var simuCanvas = document.getElementById("simuCanvas");
var ctx = simuCanvas.getContext("2d");
var lastpoint = { x: 0, y: 0, color: 0};
var zoom = 1;
//ctx.save
Point = function( l ){
return {
"x" : l[0],
"y" : l[1],
"color" : l[2]
}
}
var fileToSnap = function(file) {
if( (/image/i).test(file.type) ) {
var reader = new FileReader();
reader.onload = function(e) {
let base_image = new Image();
base_image.src = e.target.result;
base_image.width = 640;
base_image.onload = function(){
showSnap(base_image,640,480)
}
};
reader.readAsDataURL(file);
}
}
// Draws every segment received, except black colored target ones
var drawSimu = function() {
pointsList = document.pointsList
if (pointsList.length > 0)
{
ctx.clearRect(0,0,simuCanvas.width,simuCanvas.height);
lastpoint = new Point(pointsList[0])
simuContext.clearRect(0,0,simuCanvas.width,simuCanvas.height);
simuLastPoint = new Point(pointsList[0])
for (var i = 0; i < pointsList.length; i+=1)
{
point = new Point(pointsList[i])
// if the target is black, skip drawing
if( point.color != 0){
ctx.beginPath()
ctx.shadowBlur = 5;
ctx.shadowColor = 'rgba(255, 255, 255, 1)';
ctx.lineWidth = 2;
ctx.strokeStyle = "#"+(point.color + Math.pow(16, 6)).toString(16).slice(-6);
ctx.moveTo(lastpoint.x * zoom, lastpoint.y * zoom);
ctx.lineTo(point.x * zoom, point.y * zoom);
ctx.stroke();
ctx.closePath()
simuContext.beginPath()
simuContext.shadowBlur = 5;
simuContext.shadowColor = 'rgba(255, 255, 255, 1)';
simuContext.lineWidth = 2;
simuContext.strokeStyle = "#"+(point.color + Math.pow(16, 6)).toString(16).slice(-6);
simuContext.moveTo(simuLastPoint.x * simuZoom, simuLastPoint.y * simuZoom);
simuContext.lineTo(point.x * simuZoom, point.y * simuZoom);
simuContext.stroke();
simuContext.closePath()
}
lastpoint = point
simuLastPoint = point
}
}
}
function refreshImageList(){
var imageList = localStorage.getItem("imageList") ? JSON.parse(localStorage.getItem("imageList")) : []
if( 0 == imageList.length){
$("#preview").hide()
return
}
$("#preview").show()
html = ''
for( id in imageList.reverse()){
hash_name = imageList[id]
html += `<li class="list-group-item"><a href="#${hash_name}" class="hash_name btn-sm btn btn-secondary" rel="${hash_name}">${hash_name}</a></li>`
}
$("#imageList").html(`<ul class="list-group">${html}</ul>`)
}
refreshImageList()
var showImage = function(e){
var el = $(e.target)
@ -216,19 +190,84 @@ $(document).ready(function(){
})
}
$("#imageList").on("click", showImage)
$("#messages").on("click", showImage)
// Trigger photo take
$('.snap').on('click', function() {
videoToSnap()
});
$( "#slider" ).slider({
range: false,
value: 100,
animate: 300,
min : 0,
max : 255,
change: function(event,ui){
binary_level = ui.value
doContrast()
}
});
$(".contrast").on("click",function(el){
let btn = el.target
let val = Number($(btn).attr("rel"))
let new_binary_level = binary_level + val;
console.log(`new_binary_level:${new_binary_level}`)
if( new_binary_level >= 0 && new_binary_level <= 255){
binary_level = new_binary_level
$("#slider").slider("option","value",binary_level)
binary_level = new_binary_level
$("#slider").slider("option","value",binary_level)
}
})
$("#imageList").on("click", showImage)
$("#messages").on("click", showImage)
$("#send").on("click",function(){
var cropCanvas = cropper.getCroppedCanvas();
image_data = cropCanvas.toDataURL();
$("#messages").html('<div class="alert alert-primary" role="alert">Sending...</div>')
$.ajax({
timeout: 3000,
url: url + "/image",
method:"POST",
dataType: "json",
data:{
image_data : image_data,
text : $("#text").val()
},
}).done(function(d,m,j){
if( d.errors ){
msg = d.errors.join(" / ")
$("#messages").html(`<div class="alert alert-danger" role="alert">Something went wrong: ${msg}</div>`)
return
}
$("#messages").html(`<div class="alert alert-success" role="alert">OK, your image will be available in a few seconds as <a href="#${d.hash_name}" class="hash_name btn btn-sm btn-secondary" rel="${d.hash_name}">${d.hash_name}</a></div>`)
imageList = localStorage.getItem("imageList") ? JSON.parse(localStorage.getItem("imageList")) : []
imageList.push(d.hash_name)
localStorage.setItem("imageList",JSON.stringify(imageList))
refreshImageList()
})
.fail(function(d,m,jq){
$("#messages").html(`<div class="alert alert-danger" role="alert">Ooops... Something went wrong: ${jq}</div>`)
})
})
$('#uploadBtn').on('click', function(e) {
e.stopPropagation();
e.preventDefault();
//trigger default file upload button
uploadInput.click();
});
$('#uploadInput').on('change', function() {
//retrieve selected uploaded files data
var files = $(this)[0].files;
processFiles(files);
return false;
});
refreshImageList()
})